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QA/QC CHECKLIST (December 20, 2013 Version)

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GENERAL (G) Checklist Completed By: Date:

Done N/A

G1. Are the design components and features consistent with the key features in the preliminary design report or other project engineering documents?

G2. When the Design Criteria or Equipment Schedule is shown on the drawing, verify if the information matches to “Division 11 Equipment” of the specifications.

G3. Avoid repeating or including unnecessary information in schedules and on drawings where duplicate information can lead to errors when repeated information is not uniformly updated.

G4. Verify that sufficient field investigation is conducted to confirm underground utility locations. See TM 2.0 for “Potholing” suggestions.

G5. If client project manager and/or name of governing body appear on title sheet, check spelling and identify P.E. license holders where applicable.

G6. Have drawing border, title sheet and drawing convention been approved by the client?

G7. For projects where Architectural D (36”x24”, not 36”x22”) drawings are required by the client, ensure that “half” size drawings include the notation “REDUCED SIZE” or “THIS LINE IS 1” (or 2”) AT FULL SIZE.”

G8. For bid documents, the Board of Professional Engineers and Land Surveyors Act (Section 6735) requires that signed stamped drawings show the date they are approved by the engineer of record.

G9. Were the drawing titles presented in the same format throughout (from General to Electrical)?

G10. Were cross-referencing symbols properly followed?

G11. Verified Index Sheet corresponds to drawings and titles?

G12. “Line Convention” established and consistently applied?

G13. Are “Symbols and Abbreviations” specifically tailored to the project? Check that abbreviations used in the drawing set are consistent throughout and included in the abbreviation list.

G14. Are the ½ size drawings readable (proper font sizes)?

G15. Is the north arrow oriented toward top of the drawings? If top orientation is not possible, orient to the left.

G16. Are north arrows shown on all plans and partial plans?

G17. Are scales really correct?

G18. Verify correct cross-referencing and verify that the drafters have run “spell check” to correct spelling errors.

G19. Verify that each specification referenced to "as shown on the drawings"



is, in fact, on the drawings.

G20. Clearly delineated the new work, existing (as-built) conditions, and tie-ins? Wherever possible, list all existing dimensions and elevations with a “ +/- “.

G21. Were dimensions verified?

G22. Verify elevations. (Avoid repeat call out of the same elevation for the same point or surface that may appear in several sections throughout the drawings, as revisions of an elevation on one drawing may be missed on other drawings.)

G23. A typical (TYP) should be called out in the most appropriate view. Do not call out a TYP at every location it occurs on the same view. Verify that referenced typical details are included on the drawings.

G24. Look for consistent call outs of equipment and structures among drawings and between drawings and specifications. Facility or equipment names must be consistent throughout the Contract Documents. Designate a name and consistently use the name throughout. For example, if you name “Sedimentation Tank,” use this name throughout. Do not use Sedimentation Basin, Clarifier, Settling Tank, or Clarifier Tank.

G25. Verify location of equipment as shown on the mechanical drawings against location shown on the structural and electrical drawings.

G26. Look for sufficient callouts of materials. Check the callouts or legend in the Typical Detail drawings. If chances for confusion exist, call them out. Always call out aluminum, stainless steel, and other expensive materials. This will eliminate confusion in bidding and conflict in the field. Always designate Type 316 or 316L stainless steel where required. If not noted, Type 304 will most likely be provided.

G27. Verify “material” or “work” callouts on drawings match those in the specifications. For example, civil or structural drawings often refer to "engineered fill" but specifications may not define "engineered fill".

G28. Ensure that all items requiring a specification are in fact included in the specifications (check Table of Contents). Likewise, describe on the drawing an “incidental item” (say $1,000 or less) rather than adding a lengthy specification section. For example, if the project includes one or two roof drains, you may add a couple of manufacturers’ models you want rather than adding a specification section in the Contract Documents.

G29. Where confined spaces exist, verify with Project Manager that this is the design intent and acceptable to client.

G30. Avoid using total quantity statements such as "32 valves required." Instead, provide the contractor sufficient information required for his take-off.

G31. Be sure that small and obscure items such as vapor barriers, waterproof membranes, and soil sterilization required by the specifications are shown on the drawings. Otherwise, bidders are likely to miss in their estimates. Anything that cannot be corrected after the construction is



complete, if missed, must absolutely be shown on the drawings.

G32. Verify that civil drawings use an x-ref of the base structural drawings for all new structures. This will reduce the potential for the wrong size building on the civil drawings.

G33. Pay specific attention to any notes on the drawing. Are the notes necessary? Is the intent of the note clear? Is the note numbering correct or correctly referenced? Are notes on the drawings consistent with the specifications? Notes on the drawings could contradict the requirements in the specifications.

G34. When the project includes rehabilitation or an upgrade to an existing facility, verify that sufficient time is allotted in the work sequence and constraints for the operations staff to start up and take down unit processes for Contractor's work.



CIVIL / YARD (C) Checklist Completed By: Date:

Done N/A

C1. Have all recommendations given in the Geotechnical report been incorporated into the drawings including:

a. Engineered Fill

b. Paving Section

c. Maximum Allowable Slope for Final Grading and Any Special Requirements for Slope Stability

d. Maximum Allowable Temporary Cut Slope

e. Foundation Type

C2. Have all recommendations given in the Geotechnical Report been incorporated into the specifications, including:

a. Paving section

b. Compaction

c. Select fill

d. Structural backfill

e. Stripping

f. Imported fill

g. Groundwater

h. Blasting

i. Special conditions

j. Special or specific shoring requirements

C3. Is the elevation datum meridian shown on the drawings?

C4. Is the bench mark given? Make sure that the correct datum is given.

C5. Is the source of the survey information shown?

C6. Are facilities located within proper or required setback from the property line?

C7. Verify that structure coordinates are provided. Verify that structure coordinates are provided in one location only. Verify that coordinates are referenced on civil sheets.

C8. Verify that sufficient baselines and benchmark elevations for layout and control are provided.

C9. Has the laydown area been identified? Is this area adequate for the contractor needs? If not, specifications should indicate offsite requirements.

C10. Has unnecessary information from the base topographic survey been isolated and frozen?



C11. Can all new structures, utilities, and roads be located on the site using the coordinates or reference dimensions shown?

C12. Are soil borings shown with corresponding identification numbers, if appropriate?

C13. Verify that cut and fill sections show slopes and sufficient topographic information for construction? Do we have to include site-wide or plant-wide cross sections with information such as “engineered fill” and “approximate level” of groundwater?

C14. Check requirements for dewatering operation at excavation areas. Verify groundwater level reported in the geotechnical report and specify the dewatering requirements based on a groundwater level somewhat higher than the reported level for additional safety.

C15. Is the topographic mapping consistent with L&R drafting standards, i.e., lettering size and style, abbreviations and legend items?

C16. Is the drawing scale written (e.g. ¼” = 1’) on the drawings consistent with the actual scale of the plan, section or detail?

C17. Have you considered including potholing requirements on the yard piping drawings? If the site is congested with buried utilities, we should include number and depth(s) of potholes in the base bid or as an additive bid item. During construction, we can pothole areas in question and modify design and negotiate changes before the contractor begin construction.

C18. Are existing and new electrical duct banks, pull boxes, and manholes shown on Yard Piping Drawings? Are they shown to scale, including the size of electrical duct banks?

C19. Review location of electrical manholes and duct bank with respect to pressurized piping, yard drainage, and gravity underground piping. Are there any conflicts? Verify sufficient space exists for duct bank installation, especially in the proximity of pipelines.

C20. Is the proper "Call before you dig" note shown on all appropriate drawings?

C21. Verify that specific locations, boundaries, right-of-way and limits of proposed work adequately shown on the plans and described in the specifications, with horizontal and vertical control.

C22. Verify that grading shown around structures slopes away from finished floor elevation of buildings and finish grade and/or stairway landings for structures, and match entrance elevations. Cross check architectural and structural drawings to this effect.

C23. Are the limits of construction, clearing, grading, or sodding clearly shown and consistent in other disciplines?

C24. Are areas where adherence to special permits is required properly indicated on the drawings?

C25. Is adequate access provided for maintenance equipment?

C26. Is road width and turning radius adequate for chemical delivery and sludge trucks?



C27. Verify that names of roads, structures and equipment are provided and consistent throughout.

C28. Verify that typical trench and paving sections are shown.

C29. Verify that known existing utilities and improvements are shown:

a. Location shown from Record Drawings.

b. Location shown from plotted pothole locations.

c. Are the inverts of parallel pipelines shown for new pipes?

d. Investigate existing electrical duct banks in detail. Most likely, they are larger than shown on the drawings. Multiple parallel ductbanks such as instrumentation and electrical may have been poured in a single concrete mass. Where large pipelines cross under critical ductbanks, shoring requirements must be provided.

C30. Verify types of curb and or curb and gutter are properly used and in conformance with client standards, if applicable

C31. Verify that design is in accordance with local government and fire department regulations.

C32. Are the fire hydrants located correctly and do the road widths meet requirements for fire vehicles? Is adequate turning radius provided per fire department requirements?

C33. Are all fence locations shown with height, barbed wire, wire mesh, and location of all gates? Do fence details match specifications?

C34. Is all required demolition shown? Is there enough demolition to warrant separate demolition drawings?

C35. Is appropriate drainage provided for all underground structures? Do concrete slabs on grade or asphalt pavement have adequate slope for drainage?

C36. Are details provided for all utility crossings?

C37. Property line dimensions were clearly verified?

C38. Do pipe joint details match specifications (Division 15) and piping schedule, if any, on the drawing set?

C39. For existing pipeline or where connecting to existing pipes/structures, do not station terminal points on pipelines, except as followed by "+/-". Do not tie down the exact length on the drawings.

C40. Do the specified pipe materials meet the intended service of the pipe? Is there appropriate depth of cover for the specified pipe material? If adequate cover is not attainable, use a different pipe material or design concrete encasement to protect the pipe.

C41. Does any of the work involve asbestos cement pipe and applicable requirements been identified?

C42. May encounter corrosive soils? Corrosion testing required? Are cathodic protection details and systems provided where required?

C43. On profiles, verify that drawings show size of pipe, slope, invert elevation and stations at grade breaks, structures and match lines, manholes, finish



grade, and utility crossing stationing and elevation. Please refer to TM2.3 for pipeline plan and profile preparation.

C44. Verify that branch lines, services, tees, valves, and details for future extensions or connections are provided and detailed.

C45. Verify that valve boxes, manholes, vault details and luminaries are consistent and adequate. Verify drains from vaults are provided and if applicable, routed properly.

C46. Verify that properly sized air release valves are provided at summit of all pressurized pipes.

C47. Verify that air vacuum relief valves or combination air valves are provided for pipelines that operate under intermittent gravity to pressure conditions.

C48. Verify that air vacuum relief valves provided are of proper sizes to adequately vent the pipelines during filling or draining.

C49. Have you overlaid drawings to verify match lines physically match on plans and profiles?

C50. Have you checked the coordinate and curve tables through independent calculations?

C51. Have you verified that coordinate grid ticks are shown on the Civil Plan Grading and Yard Piping drawings?

C52. Verify that yard grading plans provide adequate slopes to drain paved areas without leaving "bird baths."

C53. For pipelines, has water hammer / transient surge been appropriately considered?

C54. On long sloped pipelines or where piping is connecting to reservoirs and ponds has the pipeline been protected with a cut-off wall or plug wall to prevent water migration along the bedding?

C55. Do equalization, detention, retention, storage, ponds have staff gauges as required by the Regional Board?

C56. Confirm that red wood headers or curbs are placed around pavement where required for delineation, protection of the paving sub-grade from water damage, or diversion of surface water.

C57. Is there adequate vertical and horizontal clearance for vehicles, equipment and maintenance personnel under bridges and in tunnels or vaults, etc.?

C58. Are ladders provided where necessary for personnel to enter basins? Provide portable or permanent gantry cranes for confined space entry.

C59. Are there adequate profiles and sections to show that there are no conflicts between existing pipelines or facilities and new pipelines and facilities?

C60. Type of thrust restraints (thrust blocks, restrained joints, or a combination) selected were approved by the client?

C61. Have adequate thrust restraints been provided and detailed on the yard



piping drawings?

C62. Have you verified that all subsurface structures and components (manhole covers, grating, tread plate, etc.) within traffic areas are properly rated for wheel loads?

C63. Sewers should be located below water lines if they are within 10 feet horizontally (please verify client’s requirements). Sewer and water line crossing details should be included on the drawings. Allowable clearances between water and sewer lines under the building should be clearly shown in detail drawings. Do not install water and sewer lines in the same trench side by side.

C64. Please try to avoid buried valves. Try to locate valves above ground or in a building whenever possible. If you have to bury valves, have you obtained client’s approval? Buried valves must have a proper coating specified.

C65. Did you verify that existing power/telephone poles and pole guys do not interfere with your pipelines or other site improvements?

C66. Do building or structure footprint and finished floor elevations match with other discipline drawings such as structural and mechanical?

C67. Has provision been made in the specifications for positive control temperature of the bituminous material?

C68. Test results on samples of asphalt, aggregate, sand, and mix should be obtained from the plant prior to placing any bituminous concrete.

C69. Are geotechnical requirements being followed for pavement design? Do drawings indicate total thickness of each base course type (check pavement details)? Verify cross-section indicated to insure that it agrees with specifications for base and sub-base courses, and wearing course.

C70. When Test Piles and Pile Load Tests are specified, verify that drawings show number and locations of these piles.

C71. Check fence line and grade for conflict with existing structures (e.g., sewer manholes, electrical manholes, water or gas meters, etc.).

C72. Existing trees to remain within an area should be protected from accidental damage with barricades or wooden planks strapped around their trunks.

C73. Demolition requirements should address: (a) phasing work (salvage operations, demolition, and disposal) and (b) coordinating with other phases of the construction.

C74. If excavation is included in the project, is a dump site clearly identified in the plans and/or specifications? Is a distance given?



STRUCTURAL (S) Checklist Completed By: Date:

Done N/A

S1. Have you checked structural integrity & calculations?

S2. Verify that new structure structural plans are x-reffed into the civil drawings.

S3. Where special sequence of construction is required by the design, is it called out on the Drawings or in the Specifications?

S4. Have you used correct design live loads and dead loads? Make sure live loads for structure are given on the drawings so they can be posted as required by the California Building Code (CBC), ASCE/SEI 7 (Minimum Design Loads for Building and Other Structures), or other codes. Verify grating or cover plates are designed using the same loads as on the drawings.

S5. Make sure a project specific structural, seismic, and wind design criteria is noted and has been used for the design of the project.

S6. Are foundation loads consistent with allowable soil-bearing pressures and pile capabilities as provided in the Geotechnical Report?

S7. Are bridge crane and monorail loads consistent with structural design? Verify crane capacities are indicated on structural drawings.

S8. Have structures been designed to take into account expected high groundwater levels?

S9. Are special concrete finishes (other than on Finish Schedule) noted as required?

S10. Are all structural items used for the project included in the respective specification sections?

S11. Are all reinforcing steel called out and all walls identified to proper section?

S12. Show all water stops where needed and also indicate material.

S13. Are correct and adequate joints in concrete structures shown on the drawings? Is the design of the expansion joint adequate for the spacing of the expansion joints and expected movement of the expansion joint? Make sure construction joints are shown and the construction joint spacing is consistent with the maximum spacing between construction joints (e.g. 30 feet) called out in the specifications. Has the effect of elements restricting movement of the structure been taken into account in the design of expansion joint width and the location of expansion joints?

S14. Review specifications concrete mix design, placement, curing and finishing. Include concrete testing requirements.

S15. Project specifications should specify a minimum curing period for cast-in-place concrete before permitting the application of primer and



subsequent work for built-up roofing.

S16. Specifications should require that all reinforcement should be supported and wired together before pouring concrete.

S17. Is there enough room for reinforcing bars and other embedded items?

S18. Specifications should include the type of finish needed to achieve a functional slab. Important points of the specifications are: adequately slope floors to drains; bleed water should be removed only by dragging with rubber hose over the surface and not by dusting with dry cement to absorb water.

S19. When there is a requirement to test the cement, a sample from the mill which supplies the job, or preferably from the job itself, should be shipped in air-tight containers.

S20. Specifications should state within how many days (minimum) or percent of concrete strength removal of forms will commence on different types of concrete structures.

S21. Minimum required cover over reinforcing steel for concrete surfaces exposed to the weather or for water bearing structures, and for interior concrete surfaces not exposed to weather conditions should be stated in the specifications.

S22. Specifications should include the recommended/acceptable Casting and Erection Tolerances of precast panels.

S23. Prestressed concrete shop drawings shall include, as a minimum: bed layouts, cable tensioning data, sequences for stressing, and detensioning (releasing).

S24. When prestressed products are factory fabricated, specifications shall require the adherence to catalog guarantees as to capacities, dimension, tolerances, and permissible alterations in field, such as coring for utility lines.

S25. Plans and specifications should limit the number of cut strands in the members during coring or cutting planks.

S26. Drawings must include reinforcing bar splicing details.

S27. Strand ends of pre-cast panels must be recessed and backfilled or otherwise carefully protected to avoid corrosion.

S28. Check for uplift, the need for water stops, and the need for waterproofing.

S29. Are there a sufficient number of borings, and do these represent the location of the work?

S30. Is there sufficient information for the contractor to determine the required shoring and shoring details? Please note that L&R does not provide any shoring details in the Contract Documents. The contractor must prepare and submit the shoring design and shop drawings for client’s file. L&R does not review the shop drawings prepared by the contractor.

S31. Do the drawings indicate where structures, electrical duct banks, or underground piping require protection during construction?

S32. Cross check drawings for duct bank or pipe penetrations into buildings and



structures. Verify that penetrations have been accounted for in the structural design and functionally no conflicts exist. Verify thrust loads from embedded thimbles and/or pipe supports are properly accounted for in the structural design.

S33. Verify that structural design will allow for hydraulic testing prior to backfill, or if not, notes indicating that this constraint is provided.

S34. Compare/verify background drawings for architectural, mechanical, structural, and electrical for potential conflicts or inconsistencies.

S35. Stairways and walkways should be made wide (minimum 42-inch wide, preferably 4 or 5 feet wide). Please note that handrails can take away 6 inches of clearance from each side.

S36. Tread plate sections should not weight more than 100 pounds and be provided with lifting devices.

S37. Consider the use of FRP grating in areas subject to corrosion or where frequent access is necessary. Verify rebate material is corrosion resistant.

S38. Are handrails and kickplates shown where required?

S39. Do ladders and stairs conform to OSHA requirements? Avoid ship ladders. Are two ingress/egress paths where necessary to prevent confined space classification?

S40. Any dimensions or elevations on existing structures should be given to the proper accuracy followed by + or -.

S41. Verify that weir and structure elevations match those shown on the hydraulic profile.

S42. Do all concrete slabs have proper slope for drainage or washdown? Should provide minimum ¼” per foot, if possible.

S43. Overlay drawings to verify that openings are shown on structural drawings and to check for space and physical interferences. Typical interferences and conflicts include:

a. Lights installed above ductwork/piping

b. Insufficient room for ductwork.

c. Openings for duct bank, HVAC penetrations, and pipe not shown on structural drawings.

d. Insufficient room for conduit runs in basements, door jambs, crane beam, etc.

e. Interferences at stairs.

S44. Verify all exhaust and vent pipes have proper code (CBC, IBC, etc.) differential height over high point of roof.

S45. Are column locations the same on structural, mechanical, and architectural?

S46. Do locations of roof framing plan column lines and columns match foundation plan column lines and columns?



ARCHITECTURAL (A)

Checklist Completed By: Date:

Done N/A

A1. Are the building materials and finishes compatible with the process chemicals and gases present in the facility? Are the floor finishes appropriate for the working conditions, e.g., no-slip floors were selected for wet work areas?

A2. Is the building located behind set-back lines?

A3. Have proper codes been followed as to egress, handicap access, materials, fire protection, and hazardous material use of storage? The occupancy should be noted on the plans.

A4. Verify that local and state building codes have been followed, not just the CBC.

A5. Are there sufficient and correct sections, details, dimensions, and elevations to convey design?

A6. Are architectural items shown on the drawings included in the specifications? Verify hardware schedule is correct.

A7. Are required exit signs shown and has power been provided to them? Is panic door hardware provided as required by occupancy?

A8. Do door schedules show proper fire rating, glass size and type, and louvers?

A9. Compare architectural and structural drawings for potential conflicts.

A10. Compare architectural, mechanical, and electrical drawings for potential equipment, HVAC ductwork or electrical raceway conflicts.

A11. Are roof drains located so that rainwater will flow away from doorways and outside mechanical and electrical equipment?

A12. Coordinate outside lighting located on buildings with the electrical drawings.

A13. Coordinate reflected ceiling plans with electrical and HVAC drawings.

A14. Do the architectural elevations match the surround grades, i.e., sidewalks match doorways and landings, driveway slopes and turning radius are compatible with vehicles servicing roll up doors, etc.?

A15. Are door openings consistent with intended use?

A16. Are transoms or removable panels provided where necessary to permit installation and removal of large equipment, including lifting equipment, dollies, carts, forklifts, etc. as appropriate? Provide transom panels for all MCC rooms.

A17. Do locations of columns and bearing walls, and overall building dimensions match structural?

A18. Do building elevations match floor plans? In particular, check roof lines, window and door openings, louver openings, and expansion joints.



A19. Sizes of openings for windows and doors match structural? Verify window glass types with specifications.

A20. Check all door, window, mark numbers between the schedules and drawings. Each schedule must be checked for accuracy.

A21. Do large scale partial floor plans match small scale floor plans?

A22. Do reflected ceiling plans match architectural floor plans to ensure no variance with wall locations? Does the location of electrical fixtures and mechanical registers/diffusers on electrical and mechanical plans conflict with location on reflected ceiling plans?

A23. Do room finish schedule match plan and elevation information, including room numbers, names of rooms, finishes, and ceiling heights?

A24. Does the door schedule information matches plan, and elevation information; including sizes, types, labels, etc. Look for omissions and inconsistencies?

A25. Verify the location of fire rated walls matches the location of fire and/or smoke dampers on mechanical plans.

A26. Verify cabinets will fit in available space and electrical outlets on cabinet walls are at the correct height.

A27. Verify the locations of flag poles, dumpster pads, generator pads, transformers, cooling towers, vaults, air conditioning equipment pads, fire sprinkler risers, and landscaping have been coordinated with other discipline site plans.

A28. Do floors and roofs have proper slope to drain, etc.? Were they coordinated with structural drawings?

A29. Verify perimeter slab on structural matches architectural. Architectural drawings should x-ref structural backgrounds.

A30. Verify that all depressed or raised slabs are indicated.

A31. Verify roof framing plan column lines and columns against foundation plan column lines and columns. Architectural drawings should x-ref structural backgrounds.

A32. Verify overall dimensions of mechanical equipment (i.e., air handling units, compressors, steam generators, etc.) to insure that it will fit in the space provided. Also, what electrical, piping, sprinkler, structural, architectural items are within limited spaces.

A33. Verify all plumbing fixture locations against architectural equipment and electrical plans. Verify all plumbing fixtures against schedule and/or specifications.

A34. Door hardware schedule should include (for each item of hardware): model number, finish, sizes, and types of fasteners, any designation of optional features or accessories.

A35. Glass and glazing specifications should address: sash preparation, glazing clearances, glass selection, glass preparation and glass positioning.

A36. Verify all door schedule information including sizes, types, labels, etc. Look



for omissions, duplications, and inconsistencies.

A37. Compare architectural finish schedule to specification index. Insure that all finish materials are specified.

A38. Areas in plenum or attic which are to be plastered as required for fire protection or sound barriers should be clearly marked in the drawings. (This area is often overlooked by contractors and inspectors.)

A39. All fire rated walls should be clearly identified on the drawings (floor plans, sections and wall schedule.)

A40. Check floor and wall finish schedule with that of the floor plans and elevations to determine which areas will receive tile. Height of wall tile should also be shown. (Finish schedule occasionally is not consistent with what is called for in the floor plans and elevation).

A41. Mounting heights and locations of all toilet and bath accessories should be indicated on the plans. Verify also handicapped toilets and access route requirements.

A42. Verify adequate space is provided in Operations Buildings for telephone backboards, UPS equipment, server rooms, electrical distribution panelboards, and lighting panels.



BUILDING MECHANICAL (BM) Checklist Completed By: Date:

Done N/A

BM1. Verify that proper codes are followed with regard to HVAC equipment. In California, follow Title 24. Verify that Title 24 worksheets are on drawings where required by local building department.

BM2. Are HVAC specifications are complete and correct. Do schedules in specifications agree with plans? Were HVAC drawings coordinated with electrical drawings?

BM3. Verify that adequate ceiling height or attic space exists at major duct intersections.

BM4. Is ductwork sized properly and adequately (oversizing is better than undersizing)? Avoid too many reducers (neck-downs) in duct runs.

BM5. Is there sufficient access to and work room around all equipment?

BM6. Spacing of pipe hangers and supports for each type of pipe should be clearly addressed in the plans or specifications.

BM7. Check any interference and intersection between HVAC ducting and piping, electrical trays, lights, and conduits.

BM8. Check ceiling height and size of doors of areas where mechanical equipment (AHU, compressors, generators, etc.) will enter into the building to make sure that there will be enough space and passage for the equipment.

BM9. Verify all duct penetrations shown on structural drawings.

BM10. Are all required duct supports are shown and properly referenced?

BM11. Are fire stops and dampeners consistent with occupancies? Verify that all fire codes are followed. Verify that proper interfaces have been provided with fire alarm control panels.

BM12. All supply air grilles are mounted for proper air distribution and there are no air short- circuiting possibilities.

BM13. Verify that plumbing codes have been followed. Pay specific attention to sizing of drain and vent lines and selection of piping materials.

BM14. Are all vents and stacks coordinated with floor and roof plans? Are they shown consistent with type of wall construction? Will vents fit within walls if so indicated? Are all services complete and do they coordinate with yard drawings?

BM15. Have roof drains been shown or called out on the drawings? Cross-check against the locations shown on architectural drawings. Is there sufficient room in wall for downpipes? If indicated to be in interior of building, are there any potential conflicts with process piping or equipment? Does the rain water discharge onto sidewalks or into doorways where it may present a problem? Verify that no roof drains are located above electrical equipment. Coordinate roof drain location



with architectural roof plan.

BM16. Verify that all gas regulators (natural or digester) located inside buildings have vent line shown.

BM17. Verify that all gas unit heaters show exhaust stacks and penetrations in roof deck.

BM18. Rooms with high horsepower motors, engines, and blowers will get hot fast. Provide ventilation to keep the ambient temperature change below 10 degrees F. This may require up to 30 air changes per hour. Typical air changes range 10 to 20 air changes/hour. Provide filters on intake louvers in areas subject to dusty conditions. Size louvers to avoid creating a vacuum in the room.

BM19. Asbestos removal requirements should be included in the General Notes on the drawings or General Conditions of the specifications, if required.

BM20. Check specification requirements for necessary spare parts and tools to be provided.

BM21. Specifications should indicate that all Fire Sprinkler System submittals will be subject to review and approval of the Fire Department.

BM22. Fire Department coordinated with on fire sprinkler requirements, smoke, and other fire alarm requirements? Coordinate requirements with mechanical/electrical drawings.

BM23. Verify gas lines should be above other utilities which cross or parallel?

BM24. Make certain that access panels are provided for valves located behind ceilings and walls.

BM25. Insure that in large structures, water service is such that portions of the system may be isolated for repairs without interrupting service in entire building.

BM26. Floor drains should be provided for equipment blow-off.

BM27. Provide access doors at all fire dampers, automatic dampers, coils filters, heaters, thermostats, or at any item that requires servicing. Doors are to be airtight, securely fastened and accessible and able to be fully opened. Are fire dampers shown?

BM28. Verify that all fixtures are connected to the sanitary system and that pipe sizes agree.

BM29. Verify dampers are indicated at smoke and fire walls. Verify diffusers against architectural reflected ceiling plan.

BM30. Verify all roof penetrations (ducts, fans, etc.,) are indicated on roof plans.

BM31. Verify all air conditioning units, heaters, and exhaust fans against architectural roof plans and mechanical schedules.

BM32. Verify thermostat locations have been coordinated with architectural drawings. Should include location on electrical drawings.

BM33. Confirm proper coordination is provided between Electrical and HVAC for all mechanical/HVAC equipment. Many designers include HVAC



electrical requirements such as wiring between thermostats and fans on HVAC drawings. This can lead to potential conflicts in the scope of work between electrical and mechanical subcontractors. Mechanical subcontractors typically limit their scope to 24 volt or 120 volt. All higher voltages must be included on the Electrical Drawings.

BM34. Confirm proper voltage indicated for heating coils. Heating coils that are 120 volt typically provided by mechanical/HVAC subcontractor, whereas coils that are 480 volt would be by electrical subcontractor. Confirm shown on the drawings in proper location. Suggest adding notes to electrical drawings to refer to mechanical/HVAC drawings if in doubt as to who’s scope of supply the work would fall under.



PROCESS MECHANICAL & PIPING (M) Checklist Completed By: Date:

Done N/A

M1. Hydraulic Profile is one of the most important drawings. Thoroughly check hydraulic profile. Check all flows, water surface elevations, and structure elevations.

M2. Verify that weir and structure elevations shown throughout the drawing set match values shown on the hydraulic profile.

M3. Verify freeboard (minimum 18 inches at peak flow) at all water processing structures and make sure structure will not flood or overflow at peak flows.

M4. Ensure that all equipment is located dimensionally either on mechanical or structural drawings. Ensure all dimensions to existing equipment or existing pipeline center lines or inverts listed as +/- with a note for contractor to verify if necessary.

M5. When work involves modification or demolition of existing structures, equipment, or improvements of any kind, verify that work has been addressed in the “construction sequence and constraints” section of the specifications.

M6. Verify that all referenced specification sections included on the Drawings are correct.

M7. Check that all pumps, pipes and control valves are sized properly. Verify that motor horsepowers are sufficient for entire operating range, not just the design point. Size pump motors adequately for the shutoff head.

M8. Check NPSH and wet well turbulence to prevent pump cavitation. Verify pump inlet and wet well designs are consistent with Hydraulic Institute Standards.

M9. Check motor horsepowers shown on the electrical single line drawings match the horsepower included in the equipment specifications.

M10. Checked the equipment dimension with at least two possible vendors? Make sure that the spaces provided are adequate for the equipment (potentially larger than shown) provided by another vendor you did not anticipate.

M11. When the project includes owner furnished or pre-negotiated or pre-purchased equipment, do the drawings provide all necessary utility connections, including water, power, controls, alarms, process connections, etc.? Do the specifications clearly spell out what accessories are included in the owner-furnished equipment? Does the equipment interface with contractor supplied equipment properly? Include a specification for installation of owner furnished equipment that includes contractor requirements for storage, handling, installation, startup, testing, and documentation requirements.

M12. Check process tanks for proper scum removal when applicable.



M13. Is access provided for installing and removing all equipment items and for servicing and repairing them? Are lifting provisions provided? Is there adequate space/height clearance for removal from equipment base? Have provisions been made to allow removal of equipment from building/structure and loading of large equipment for transportation to a repair facility? Are skylights, double doors, transom panels, etc. provided as necessary?

M14. Is adequate space provided for forklift traffic for chemical tote bin delivery/removal?

M15. Is the equipment name (and tag numbers where applicable) consistent on drawings and schedules and specifications?

M16. Do the P&ID and mechanical drawings correctly show the mechanical devices required such as solenoid valves, pressure sensors or switches, seal water connection or panel, rotameters, variable area flow meters, and pressure gauges?

M17. Are there adequate alarms in place? Each equipment item should have the appropriate protective shutdown sensors. Consider emergency stops, especially for conveyors, bar screens, other similar equipment where moving structure could harm operators.

M18. Verify pressure gauges, pressure switches, rotameters, and thermometers are marked and scheduled. Are operating ranges specified? Are specified ranges proper for service and clearly indicate material requirements?

M19. Coordinate pressure gauges between mechanical drawings, specification schedule and P&IDs. Confirm proper materials of gauge construction where installed in chemical service.

M20. Coordinate solenoid valves and pressure switches with electrical drawings and P&IDs.

M21. Allow sufficient head space for equipment in all structures and enclosures. Additional ceiling space may be needed for overhead piping, electrical conduits, deep beams, or lifting devices. Provide at least 4 feet (preferably 5 or 6 feet depending upon equipment mass) all around equipment for access. Allow sufficient space for equipment accessories (e.g., seal water piping, local controls, relief valves, valve operators or counterweight).

M22. Are there adequate isolation valves? Are they properly positioned for equipment maintenance while maintaining standby or bypass in service?

M23. Check critical process pipelines for ability to clean, drain, sample, and/or bleed air (isolation valves provided as necessary).

M24. Check that meters shown in piping systems are coordinated with electrical and instrumentation drawings. Verify meters have sufficient upstream/downstream straight runs for meter specified. Verify velocity requirements through meter and provide reducers if necessary.

M25. Verify that all required pipe supports are shown and properly referenced. Ensure that pipe supports are adequate and shown at proper locations for all pipe jointing methods specified.



M26. Check that pump sequencing elevations are in the drawings or specifications (preferably on the drawings).

M27. Verify there are sufficient flex couplings, and they are anchored (tied) where required.

M28. Restraints "Where required" includes all lines which receive a pressure test and where no external pipe restraint is provided.

M29. Verify vibration isolation requirements are included in the specifications, when required.

M30. Verify that pump seal water stations are shown for all pumps requiring seal water and that seal water equipment drains have been provided at pumps. Coordinate with P&IDs and electrical to clearly show accessories including pressure switches and/or flow switches and solenoid valves.

M31. Check that process, water, floor drain, sanitary drain, and air piping, is continuous from point of origin to point of termination.

M32. Verify adequate floor and equipment drains are provided, drain piping is of adequate size (prefer oversized), and cleanouts are provided. Minimum drain pipe size should be 4 inch no matter how small the drainage flow requirements may be.

M33. Verify that there are sufficient hose bibbs of the proper type. In cold regions freeze-proof valves are required. Verify that standard hoses (i.e., 50' or 100' per specification) can reach all areas of washdown areas. Hose diameter should be 3/4-inch min., preferably 1-inch or larger depending upon the use of hose. For example, tank washdown, specify 1-1/2 inch diameter, unless client wants a larger hose. Provide hose racks and hose bibbs toward the high end of structures for rooms that have sloping floors.

M34. Verify that all hydraulic gates and valves are accessible.

M35. Check that stop plates are not too large and heavy. Provide properly sized lifting devices.

M36. For frequently exercised gates, confirm number of turns for opening and closing of gates, and provide electric operators where number of turns is excessive.

M37. Verify that air release valves of proper size have been provided on all high points of lines normally under pressure. Also, verify that air vacuum/relief or combination air valves of proper size have been provided on lines which operate under both gravity and pressure modes.

M38. Verify that air release valve details and specifications indicate an appropriate type and pressure rated unit. Has a sewage-rated valve been specified for applications with wastewater, sludge, grit, stormwater or other processes containing solids?

M39. Verify that cleanouts are accessible for rodding equipment.

M40. Pump casing vents, where used, should be piped to the wet well.

M41. Verify that sufficient room exists for valve operators. This is especially important for valves 6 inches and larger and all motorized operators.

M42. Verify that P&IDs, electrical drawings, and mechanical drawings all agree



with respect to equipment protection devices for temperature, vibration, moisture, pressure, flow, etc.

M43. Confirm start/stop cycles of constant speed equipment are not excessive.

M44. Verify control valves used for modulating air or water flow rates are appropriately sized to meet throttling needs per the design criteria.

M45. Verify blow-offs are provided at all low points in air piping. Consider providing automatic condensate traps.

M46. Consider providing blow-offs as required for low points in sewer lines if low points can’t be avoided.

M47. Verify the piping systems which require cleaning or disinfection have been specified.

M48. For water treatment plant structures such as filters and finished water clearwells, confirm cleaning and disinfection requirements per AWWA 652.

M49. Verify all equipment and surfaces have been identified in the painting/coating schedule.

M50. Provide blower inlet and discharge silencers and insulate blower discharge piping.

M51. Provide insulation for blower air discharge piping for personnel protection.

M52. Place pumps a minimum of 18 inches off the floor to allow easy maintenance access for the operator. Provide drain for pump casings and pipes, and continuous seal water drain. Provide air bleed-off valves to drain. Always provide positive suction head over the top of pump casing - critical for chemical feed pumps.

M53. Provide pressure relief valves for all chemical metering pumps.

M54. Provide pressure relief valves and/or high pressure switches for all positive displacement pumps such as progressing cavity, plunger, and diaphragm pumps.

M55. Provide the proper valve for the service required. Check with the client’s O&M staff on manufacturer preferences. Try to locate all valves within easy reach. Valves operated infrequently can freeze-up and be difficult and dangerous to operate if not easily reachable. Locate valve operator chains out of walkways or provide chain hooks to avoid a safety problem. Confirm there is adequate space for the valve operator.

M56. Consider using redundant knife valves with plugs valves to allow plug valve maintenance for units difficult to remove from service (e.g., digesters and sludge piping systems).

M57. Avoid using stop plates if frequent operation is required. Stop plates are difficult to operate.

M58. Avoid buried valves if at all possible. If buried valves are to be used, check if client has applicable standard details on buried valves we can use.

M59. Fillet all pump sumps to facilitate easy cleaning. Provide access to sumps for washdown and removal of floatables.



M60. Scum sumps on clarifiers should be located below the bridge for easy wash down. If available, provide hot water for primary clarifier scum sump washdown and cleaning.

M61. Provide a hose/rack close to large sumps for washdown. If air is used for sump mixing it should be located to avoid air binding and locking of the pumps.

M62. Use appropriate check valve for sump pump application.

M63. Allow access for all equipment lubrication points or centralize lube lines in a convenient location.

M64. Is magnetic flowmeter bypass or a pipe spool provided to allow taking the meter out of service? Verified that magnetic flowmeters will flow full under all operating conditions. The hydraulic grade line elevation at the meter must be at least as high as the top of the meter. (The energy grade line must be at least V2/2g above the top of meter.)

M65. Provided means of air release for air trapped by the meter section?

M66. If the meter section forms a grit trap, provide isolation valves, drainage, and grit flushing. In addition, if grease buildup will occur, provide means for steam cleaning the meter section.

M67. Avoid high spots in sludge or wastewater pipes that can gas up. Attempt to slope piping uphill with the flow to help relieve air. This is true for chemical pipes that can off-gas as well (such as sodium hypochlorite).

M68. Provide cleanouts at all direction changes and 100-foot intervals (flanged or Victaulic tees and blind flanges make good cleanouts).

M69. Use Type 316 stainless steel piping as much as possible. Insulate discharge piping prevent accidental exposure to high temperature. If you have to use steel piping for aeration air for some reason, avoid coatings on the inside of steel piping; it can flake off and plug air diffusers.

M70. Provide insulation/heat tracing on piping subject to freezing (e.g., sodium bisulfite, eyewash water).

M71. For sizing a drain pipe for a tank or basin, consider size to the tank or basin overnight.

M72. Chlorine contact basins require rapid draining and cleaning. Provide a positive washdown feature (e.g. large hose and/or washdown monitors).

M73. Adequately slope floors (minimum ¼ inch per foot) to a trench floor drain system.

M74. Use minimum 6-inch (preferably 8- or 12-inch) floor drains in buildings handling sludge pumping or dewatering.

M75. Provide adequately sized lifting devices including lifting rings designed for equipment weight.

M76. Work with client O&M staff early to plan for maintenance concerns such as air supply for pneumatic tool operation, location of electrical outlets, need for welding outlets, special lighting requirements, and equipment preferences.

M77. Anticipate the monitoring requirements for each unit process and provide



safe and easy access for sampling of wastewater and sludge. Provide washdown and proper drainage at process sampling locations.

M78. Minimize the time delay for chlorination/dechlorination control by locating the analyzer equipment nearby or pumping a large sample volume to the analyzers. Provide for completing the sample analysis within 2 minutes of sample collection.

M79. Locate and size sample piping and analyzers in general accounting for lag time between sample collection and sample analysis. For example, raw water turbidimeters may be better located at the raw water pump station than at a remote operations building.

M80. Pumping thickened or dewatered solids requires special attention. Check and recheck pipe sizes, flow, and anticipated discharge pressures.

M81. Sodium hypochlorite feed systems have special requirements. Check piping material, piping connections and elevations to prevent leaks and off-gassing.

M82. Use FRP grating in areas subject to corrosion or where frequent access is necessary.

M83. Consider over-sizing plant utility water systems for cleaning and wash-down operations. No operator will ever question “higher capacity and higher pressure.”

M84. Provide mixing and storage ahead of sludge thickening or dewatering equipment to keep a homogenous feed and operational flexibility.

M85. Size chemical storage tanks based on delivery volume plus a safety factor for inventory. 150 percent of delivery volume works well. Check delivery volume (commercial delivery tanker capacity) for each chemical used. Highway weight limits deliveries to 48,000 pounds which is typically between 4,000 to 5,000 gallons depending on specific gravity of the chemical.

M86. Verify that sluice gates, slide gates, motorized valves, etc., are properly indicated on the appropriate schedule and tag numbers match. Verify that schedules are complete and consistent on the drawings and in the specifications.

M87. All interfaces such as pipe entrances and sidewalk elevations between the yard and structural drawings must be coordinated. Verify elevations match any details or typical details such as thresholds.

M88. Ozone, chlorine and other chemical facilities can be dangerous. Allow sufficient access and exit points, and plenty of room around the equipment.

M89. Provide building roof access for maintenance of pumps, large valves, HVAC and other heavy equipment.

M90. Avoid confined spaces as much as possible. Avoid placing equipment or valves in confined spaces which require a permit for entry.

M91. Isolate noisy equipment whenever possible. Provide acoustical treatment to walls and ceilings in noisy equipment rooms.



M92. Provide both horizontal and vertical clearance for equipment removal and maintenance (e.g., progressive cavity pump rotor/stator, centrifuge feed tube).

M93. Confirm backflow requirements and provide approved backflow prevention devices where required.

M94. Have eye wash stations been provided at chemical equipment such as sodium hypochlorite, sodium bisulfate and polymer? Are tempered water requirements applicable? Water source is potable?

M95. Condensate drains are provided on piping for foul air, digester gas, or other “wet” gasses?

M96. In manholes and concrete structures exposed to hydrogen sulfide, T-lock or equivalent coating should be provided.

M97. Have chemical tanks been provided with secondary containment with proper drainage?

M98. Are large equipment hatches provided with “spring assist” to aid in opening/closing?



ELECTRICAL (E) Checklist Completed By: Date:

Done N/A

E1. Review of Latest Version of Applicable Codes:

a. Spend time with Senior Electrical Engineer to share approach to code compliance (e.g. Fire Codes and National Electrical Code).

b. For wastewater pump station and treatment plant projects, make sure that the design complies with NFPA 820 – “Standard for Fire Protection in Wastewater Treatment and Collection Facilities.”

c. Verify submittals to Building Official (Plan Check) and Fire Department have been planned, prepared and included in the design scope and schedule.

E2. California Projects – Check the Following:

a. For reclaimed water projects, check Title 22, Article 8, Items 60335 and 60337.

b. Check California Title 24 Part 3 - California Electrical Code.

c. Check California Title 24 Part 3 - California Energy Efficiency Standards.

E3. Coordination of Electrical Drawings with Site Utilities, Structural and Mechanical:

a. Electrical duct banks, pull boxes, and manholes are shown to scale on electrical site plan drawings, including the size of electrical duct banks?

b. Civil & Yard Drawings: Existing and new yard piping, catch basins, manholes, and yard structures are shown as background on electrical site plan drawings? No conflicts exist of duct banks, manholes with piping and structures?

c. Profiles of electrical duct banks may be required to ensure that duct banks drain, properly and do not conflict with yard piping or other site buried features.

d. Are any existing duct banks impacted by new yard piping or buried/exposed structures?

e. Structural Drawings: Duct bank entrances and openings provided for large conduits? Space available for long radius conduit bends? Check slab reinforcing for conduit entry into bottom of electrical equipment; provide blockouts and include on structural drawings if necessary for conduit entry.

f. Provided concrete pads, trenches, housekeeping pads, or special structural supports for electrical equipment? Reference appropriate typical structural details for pads, anchor bolt details, etc.

g. Check mechanical equipment specifications regarding control panels, temperature devices, vibration, moisture, pressure, flow, space heaters, thermostats, etc. Do equipment specifications properly describe the accessories to be provided by the equipment vendor?



h. Duct bank and structures: For duct banks that are beneath the slab, verify the following: Should the duct bank have reinforcing steel? How does the duct bank go beneath/through the footing? Any provision to allow for differential settling between the duct bank and the stab? Should the duct bank be tied to the slab?

E4. Obtain List of Equipment Loads and Electrical Building Sizing:

a. Verify adequate switchgear and MCCs bus rating for present and future loads.

b. Verify interrupting rating of equipment for available short circuit currents.

c. Verify feeder and branch circuit wire size for maximum 3 percent voltage drop.

d. Verify feeder and branch circuit wire size for connected load plus 25 percent of the connected continuous load or 25 percent of the largest single motor load.

e. Adequately sized the electrical building or MCC building? (Engineers tend to undersize the building during planning phase. During design loads are added and often the size of the building must be upsized to facilitate the added loads.

f. Allow 6 feet of clearance in front of MCCs or control panels. Provide adequate access to the back of the panels for maintenance. Check for minimum front clearances, 2-paths to exit, doors open 110°.

g. Sized electrical building or MCC rooms to accommodate future loads?

h. Adequate space provided for telephone backboards, PLC and UPS equipment, server rooms, in addition to panelboards and lighting panels?

i. Provide wide & tall doors or transoms where bulky electrical equipment such as switchgear is installed.

j. Verify the electrical building is above the 100 year flood level. Do not place MCCs or control panels in basements or areas subject to flooding.

k. Grounding Requirements

l. Grounding grid size? Transformers grounded? Equipment Bus grounded?

m. Ground Rod details, Ground Wells, Power Duct bank Bare Ground?

n. Isolated Ground for Instrument (or PLC) Panels?

o. Special grounding for instruments? (e.g., Magnetic flow meters)?

p. Special grounding requirements due to low moisture soil?

q. Coordination with any cathodic protection grounding?

r. Grounding specification complete and adequate?

s. If new design ties into existing, are existing grounding systems adequate? Check the tie to existing ground is clearly shown.

E5. Assessment of Main Power Distribution System:



a. Verify "degree" of reliability, e.g., standby or emergency power, double ended switchgear, uninterruptible power supplies, etc. Did you confer with client exactly what reliability design criteria are applicable?

b. Variable frequency drives (VFD) issues, such as harmonics, filters, clean power drives and all contractor requirements (shop tests, field tests, startup, etc.)?

c. Reduced Voltage Starters for large motors acceptable?

d. Require power factor correction capacitors?

e. Equipment specs should include factory test, field test, startup, and personnel training?

f. Provide adequate space in electrical rooms for present and future equipment. At the beginning of the design, assume several extra MCC sections for planning space requirements that may be filled as design progresses and/or filled if motors increase in size. Also, consider including 20 % extra space for future loads.

g. Plan MCC room size as required to accommodate air conditioning and ducting without encroaching on space over the top of the MCCs. Ducts may be large if VFDs are located in the MCC rooms, and ventilation only is provided to remove the heat loads. Consider allowing space as required for intake louvers if larger than can be provided in a door.

h. Provide transom panels or oversized doors for MCC rooms.

E6. Review of Raceways Systems:

a. If raceways, and wire schedules are used, cross check consistency and completeness between schedules, plans, and single line drawings (Incorrect conduit and wire schedules result many sticky construction change orders.)

b. Adequately size manholes, handholes and pull boxes.

c. Spare conduits included in duct banks for future additions?

d. Are power and signal conduits in duct banks properly separated?

e. Check for large exposed pull boxes or wireways in congested conduit areas.

f. Check for building expansion joints and call-outs in electrical drawings.

g. Check for adequate radius and space in routing if cable trays are used. Include details for supporting cable trays including vertical and lateral bracing (if necessary for seismic loading). Coordinate with structural engineer, especially where lateral bracing or support is needed at entry to MCCs. Include separate or divided trays for signal, control, and power?

h. Check for circuit derating, if applicable.

i. Double check for raceway and circuit completeness.

E7. Identification of Building Areas or Site Conditions on Drawings:

a. Check for proper identification of Hazardous Classified Areas and select proper enclosures (e.g., Class I, Division I). Check both NFPA 820 and



fire code for specific requirements for hazardous chemicals (specifically ventilation requirements, emergency alarms, etc.). Coordinate with Fire Marshall during design.

b. Avoid locating control panels in Hazardous Classified Area – often can locate a short distance away to avoid NEMA 7 enclosures which are very expensive and not easy to access for maintenance.

c. Check for identification of corrosive NEMA 4X Areas and selection of proper materials. Be sure the 4X material of construction is defined on the drawings or in the specifications.

d. Check for identification of potential Submersible or Flooding, NEMA 6 Areas.

e. Check for specific notes and details regarding requirement for conduit seals, etc.

f. Check for physical space to install seals and other bulky explosion proof equipment.

g. Verify gas detection systems are shown with sufficient detail and in correct location where required.

E8. Check Electrical Schematic Diagrams and Single Line Diagrams:

a. Mark all planning-type drawings (single line diagrams, P&IDs, communications drawings, and possibly the elementary diagrams) with WiresetID on a layer that is not plotted. Extract the WiresetID and compare it with the Conduit & Cable Schedule. (John Tomsic Needs to explain this.)

b. Checked schematics against P&IDs and Control Descriptions?

c. Identified applicable schematics in MCC single line diagrams?

d. Provided equipment name and tag numbers?

e. Are the locations of the devices clearly indicated (MCC, Panel, Field, etc.)?

f. Minimum conduit sizes: 3/4" if exposed, 1" if embedded in concrete.

g. Circuit breaker (CB) or motor circuit protector (MCP) rating: All motor branch circuits should use MCPs. All feeders or branch circuits should use CBs. For CBs with frame size 100A or less, show trip rating only (e.g., "20A"). For CBs with frame size greater than 100A, show frame size and trip rating (e.g., 225AF/200AT). For MCPs, show continuous current rating of the device (e.g., 3A, 7A, 15A, etc.). Coordinate all these with the electrical legend sheet.

h. All spare starters, in general, shall have a run light at MCC.

i. Check the electrical drawings and P&IDs to verify that a motorized operator is shown at each location noted on the motorized operator schedule.

E9. Compare Electrical Schematics to Control Panel Elevations:

a. Check drawings for enclosure requirements, i.e., corrosive, wet, explosion-proof, etc. Identify NEMA rating on plans and coordinate with



specifications.

b. Review annunciator window, nameplate, and legend plate schedules.

c. Review panel layout for correctness. Panel elevations, in general, should be drawn 1/8"=1" even though the drawing shows "No scale." Check code requirements, such as 90 degree minimum door swing, pad size, clearance, etc.

d. Protect (provide sunshades for) outside control panels and instrument displays from direct sunlight. Orient panel face towards north. LCD displays blackout quickly and are unreadable when exposed to sunlight.

E10. Compare MCC Single Line Diagrams to MCC Elevations:

a. Circuit Number and space requirements. Determine what manufacturer's space layout criteria were used. Check the named manufacturers listed in Specifications.

b. VFDs have sufficient space to accommodate filters, 12-pulse or 18-pulse configuration, and/or phase shifting transformers as required.

c. In general, each MCC shall have a dedicated vertical section for its respective incoming feeder. Feeder will normally be bottom entry unless bus duct is used. Check for space at bottom for cable entry. Main circuit breaker should be in "center" of section. Main circuit breakers should be fixed, not drawout; however, if drawout, verify depth is shown correctly.

d. Check space for metering devices.

e. Verify adequate space for lighting transformers and lighting panels.

E11. Compare Schematics to MCC Elevations:

a. For circuits with relays, timers, etc., make sure space is large enough to accommodate devices. Figure one or two relays per circuit require 6" of additional space. Three or four relays probably require 12" of additional space.

b. Verify specifications call out for proper relay type.

E12. Compare MCC Single Line Diagrams to Plan Layouts:

a. Verify space for installation and removal of major electrical gear (e.g., door heights and widths, removable transformers, etc.).

b. Location (i.e., is equipment/device shown).

c. Equipment: Name and Tag Number.

d. Circuit number agreement between single lines and plans.

e. Home run line work regarding: exposed vs. in or under slab. As much as possible, conduit should be exposed. No conduit in slab other than at grade (that is, no concrete encased conduit in structural foundation and first or second floors, etc.). If you have to run conduits, preferably under, not in slab.

f. Verify continuity of circuits, tray, and conduit within each facility.

g. Check dimensions and make sure all major electrical equipment fit in



the space provided.

h. Code clearances for all electrical equipment. Verify drawout components have sufficient space.

i. Adequately size building or structure openings for placement/removal of electrical equipment.

j. Coordinate with raceway schedule.

k. Verify sufficient egresses away from panels per code requirements.

l. Panel layout, dimensions match? Back access required?

E13. Review Lighting Branch Wiring Plans:

a. Check adequacy of lighting design, mounting height, quantity of fixtures, fixtures types identified in schedule. Verify not in conflict with HVAC or mechanical piping plans.

b. Check voltage drop of lighting circuits.

c. Are emergency lighting fixtures required? Are emergency fixtures and exit signs wiring on dedicated circuits?

d. Check for mounting and support details for poles, poles near basins, etc. Consider bulb replacement access when locating equipment room light fixtures.

e. Check if lighting fixtures are adequate for any hazardous classified areas.

f. Check identification of all lighting branch wiring in panelboard schedules.

g. Check for proper number of 3-way and 4-way switches for light fixtures.

h. Check typical wiring diagram if applicable for low voltage lighting controls.

i. Check types of outdoor lighting fixtures. Coordinate with site plan building orientation on architectural drawings. In general, outdoor fixtures should be on a photocell.

j. Check photometric lighting levels at work surface.

E14. Miscellaneous Power and Instrumentation Branch Wiring Plans:

a. Check for adequate quantity of receptacles in rooms or building?

b. Are receptacle circuits separate from lighting circuits?

c. Provide conventional receptacles outside of hazardous location so maintenance can use via lead cords and plugs.

d. Check for GFI receptacle in outdoor and wet locations.

e. Check for 120-volt power when needed for instruments.

f. Provide in-use weatherproof covers over switches and receptacles in all outdoor as well as indoor wet or corrosive locations.

g. Check hazardous locations regarding switches and receptacles.

h. Check all instrument conduits/wiring from devices to panels.

i. Check all analog transmitters for 2 conduits: 1-AC conduit with wiring



and signal conduit with shielded cables.

j. Provide safety switch at each air conditioning component. Provide GFI convenience receptacle within 50 feet of every HVAC device.

E15. Miscellaneous Communication/Signal Systems Wiring:

a. Verify uninterruptible power supplies are provided for PLCs.

b. Check if fiber optic cable conduits and bending radius are adequate?

c. Check provisions for fiber optic cables terminal boxes.

d. Verify adequate specs for fiber optic cables in Division 13.

e. Check design provisions for telephone service, voice/data wiring systems.

f. Check wiring design and specs for fire alarm systems.

g. Check wiring design and specs for gas detection systems.

E16. Electrical/MCC Building, Space and Access:

a. Do not place MCCs or control panels in basements or areas subject to flooding.

b. Check the ventilation and/or air conditioning required to prevent overheating.

c. Locate instruments for easy for access and read.

d. Provide energy monitoring system, if required, with SCADA systems.

e. Adequate space for local disconnects? Avoid conflict with piping and other local devices. Minimize flexible conduit.

E17. Review of Division 16 Specifications:

a. Review requirements for special studies, e.g., Short Circuit, Harmonics, arc flash?

b. Interrupting ratings of equipment are adequately specified?

c. Are type of conduits and conduit materials clearly specified for all exposures and applications?

d. Verify wire colors and labeling requirements. (Ask for any Owner's standard?)

e. Verify adequate specifications of wire materials application

f. Verify adequate electrical specifications for major electrical equipment.

g. Electrical testing requirements are adequately specified?

h. Check any conflicts with mechanical equipment specifications regarding control panels, temperature devices, vibration, moisture, pressure, flow, space heaters, etc.

i. Verify that motors listed in specifications agree with electrical drawings with respect to horsepower, voltage, breaker size, phase, etc.

j. Specifications should clearly define procedures and restrictions for scheduling outages and the feasibility of utility interruptions. Check against statements made in the General Requirements or other front-



end specifications.

k. Specifications should indicate that all fire alarm system submittals will be subject for review and approval by the Fire Department, coordinated with fire sprinkler system specifications.



INSTRUMENTATION & CONTROLS (I&C) Checklist Completed By: Date:

Done N/A

I&C1. General:

a. Check that all functions shown on the drawings (and described in the specifications) are adequately redundant (reliable) and not over-instrumented.

b. Make sure correct symbols, legends, and abbreviations sheets are used.

c. Did project manager and process engineer read and validate “Control Strategy” descriptions?

d. Is there a general control strategy to cover power failure and other general control requirements?

e. Reviewed the control panel specifications and compare them to the drawings and electrical design?

f. Check miscellaneous systems such as telephone, CCTV, fire alarm, paging, security, gas detection, and safety, are required?

g. Check to see that specifications are organized to assure proper packaging of instrumentation, (e.g., who supplies equipment: equipment manufacturer or instrumentation subcontractor?).

h. Check that all functions shown on the drawings and described in the specifications are consistent.

i. Have outdoor panels with HMIs and gauges been provided with a sunshield?

j. At pump stations or other confined spaces does the project require use of Lower Explosion Limit (LEL)?

k. Do indicator light colors (e.g. Run, On, Fail) match the client’s standards or existing equipment?

I&C2. Review the P&IDs for Completeness:

a. Although most clients require us to produce P&IDs, verify the project or contract requirements on type and level of P&ID details with the client. Even if client does not require P&IDs, we may want to produce P&IDs for our benefits (for efficient design coordination).

b. Should smart P&IDs be used based on the contract scope of work?

c. Verify that all mechanical equipment is shown on a P&IDs.

d. Verify that each interlock symbol has a description on the P&ID or in the loop descriptions or control strategy.

e. Review P&IDs for completeness and in accordance with legend sheets. P&ID drawing formats are subject to change from job-to-job and in some cases, client specific.

f. Check equipment/instrumentation name and tag number per instrument list. Every instrument and equipment tag should be on the



P&ID drawings.

g. Every I/O point should be on a P&ID drawing. Also, verify that all I/O points on the P&IDs are in the I/O list, and vice versa. Extract the I/O from P&IDs and other drawings and compare them with the I/O list.

I&C3. Check the instrumentation:

a. Verify that each instrument on the P&IDs is in the instrument list, and vice versa.

b. Check to see that each instrument type in the instrument schedule has been properly specified.

c. Review the instrument specifications. Are they current and complete? Have all optional parameters in the standard specifications been entered? Check materials of construction for chemical compatibility where installed in chemical service.

d. Review the instrument installation details. Are they appropriate and complete? Use Type 316 stainless steel mounting hardware inside wet wells or below ground.

e. Watch for "backfeed" current paths for more complicated circuits.

f. Check the instrument ranges are described in the instrument schedule.

g. Control strategies and mechanical equipment or system specifications were properly coordinated?

h. Check P&IDs against loop and control descriptions, mechanical specifications and electrical schematics for consistency and completeness of control logic.

i. Compare specifications to assure instrumentation is consistent between the equipment and instrumentation specifications.

j. Check to see that all equipment can be run in manual modes. Do not allow safety cutouts to prevent normal operation (i.e., lower pressure cutout with no time delay).

k. Verify P&IDs and process descriptions are coordinated with applicable specifications (Divisions 11, 13 through 16).

l. Check tag numbering and equipment names between P&IDs, mechanical drawings, electrical drawings and mechanical and instrumentation specifications.

m. Verify that each field instrument is properly located on a mechanical drawing.

I&C4. Electrical Coordination:

a. Double-check schematic diagrams for correctness (i.e., will they work?).

b. Verify instrumentation is consistent with mechanical plans/specification and electrical plans with regard to equipment protection devices including temperature, vibration, moisture, flow, pressure, space heaters, etc.

c. Verify that field instruments are properly located on electrical drawings and properly wired. Verify that a 120 VAC or 120C UPS power circuit



and conductors are provided for all instruments that require power.

d. Spot check the conduit and conductor design for instrumentation and data circuits.

e. Verify that there is adequate physical space to install control panel(s). Verify that panels are shown on electrical drawings, and that they are drawn to true sizes plus extra room.

f. Check any cross-references between electrical and instrumentation specifications. In particular, look for conflicts or gaps with regards to control panel specifications, and wire tagging requirements.

g. Verify that adequate UPS and redundant power sources are provided and coordinated with instrumentation and control system needs.

h. Check the signal and control interface(s) to VFDs.

i. Verify that classified spaces have been identified and that instrumentation design covers classified area requirements.

j. Verify electrical design provides adequate separation between signal and power conductors.

k. Check electrical schematics for operation consistent with the control descriptions. Do the schematics show all devices such as timers, pressure and limit switches, solenoid valves, floats, etc.?

I&C5. Digital Control System Review:

a. Review field signal compatibility with computer interface/control panel signal requirements.

b. Review grounding procedures for compatibility with SCADA systems and PLCs.

c. Check the overall system reliability – i.e., PLC "Hot Backup" configuration, redundant controllers, backup power supplies, dual communication links, etc. to assure system will operate properly. Verify proper operation when facility under standby power.

d. Review the network design(s).

e. For PLC or DCS circuits, watch for need for interposing relays so as not to exceed the current rating of solid state output contacts.

f. Review field signal comparability with computer interface/control panel signal requirements.

g. Review the layout and design of all control rooms and any remote operator interface terminals. Check the coordination with Architectural. Review furniture and console specifications, if applicable.

h. If separate server rooms are provided, consider dedicated air conditioning units with backup to building air conditioning unit in the event of failure of the dedicated AC unit.



SPECIFICATIONS (SP) Checklist Completed By: Date:

Done N/A

SP1. Verify the index and sections contained in the body of the specifications match.

SP2. Are all appropriate permits and permitting requirements included (stormwater, Army Corps, Department of Fish and Game, Caltrans, State Department of Health, Regional Water Quality Control Board, local air management authority to construct, local building department permits, easement or right of way permits, fire department, etc.)?

SP3. Is the Project Summary” description is adequate and accurate so that it can attract more bidders?

SP4. Review project schedule. Will Contractor have sufficient time to complete project? Is the schedule too tight and could result in higher bid prices?

SP5. Are “Liquidated Damage” and “Progress Payment and Retention” provisions fair and reasonable?

SP6. Are the “construction scheduling submittal” requirements and detailed “bid price breakdown” clearly described? What kind of network analysis system should be specified (e.g. Primavera PM6)?

SP7. Utility outage requirements and procedures needed and specified?

SP8. Who provides power and water required for construction?

SP9. Do specifications clearly define “Contractor’s Quality Control (CQC)” requirements?

SP10. Do front end specifications include sufficient time for operations staff to start up and shut down facilities or unit processes to accommodate contractor's work?

SP11. Do we have to specify at least “two manufacturer’s names, or equal” when we reference manufacturer and equipment model number?

SP12. Work sequencing and construction constraints are described in the General Requirements? We should discuss with client about construction constraints that need to be included in the specifications so that the contractor can develop his construction schedule.

SP13. Review work sequence and constraints with respect to the layout of the facility. Are there any conflicts including operations staff accessibility to existing unit processes, interference between separate contractors, access/egress from the site during construction, chemical delivery impacts, etc.?

SP14. Verify that bid documents address all specific requirements identified elsewhere. For example, if specialized experience is required under the technical specifications, verify that the bid documents contain sufficient information defining the nature of experience.

SP15. Should constructability / biddability review be completed by an



independent firm?

SP16. Are owner’s front end documents used? (Most public entities have their own front-end specifications and we should obtain the most current and appropriate version to work from.) Have you read through the owner’s front end documents for any discrepancies?

SP17. Verified that client has recently reviewed front end documents for conformance with their standards, needs, indemnification, insurances, etc.?

SP18. Verify that the “Bid Schedule” is clearly defined and alternate bid schedule or unit price bidding, if any, is clearly described.

SP19. Verify that the items specified “as indicated” or “where indicated” in the specifications are in fact indicated on the contract drawings.

SP20. Has specification terminology been coordinated with drawing terminology?

SP21. Have specifications been reviewed for coordination between sections?

SP22. Verify all equipment and surfaces need painting or coating has been identified in the painting/coating schedule.

SP23. All major equipment specifications should be sent to vendors for technical review and pricing.

Date post:	27-Mar-2018
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