1 | Page Date: February 21, 2020 Addendum # 3 T02.2020 Title: Hemlock Reservoir To All Bidders of T02.2020: Please note: the following addendum and attachment provided by CBCL applies to T02.2020 and shall be taken into consideration when preparing bid documents. The attached PDF document to be added to and made part of the Tender documents. A signed copy of each Addendum must also be included with the bid submission. Failure to include this Addendum may be cause for rejection. If you have any questions, please contact our office by email at [email protected]. ALL OTHER SPECIFICATIONS, TERMS AND CONDITIONS REMAIN UNCHANGED. Acknowledgement by Bidder: Company Name: _________________________ Print Name: _____________________________ Signed: ______________________________ Date: ______________________________ End of Addendum # 3
Transcript
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Date: February 21, 2020
Addendum # 3
T02.2020 Title: Hemlock Reservoir
To All Bidders of T02.2020: Please note: the following addendum and attachment provided by CBCL applies to T02.2020 and shall be taken into consideration when preparing bid documents.
The attached PDF document to be added to and made part of the Tender documents.
A signed copy of each Addendum must also be included with the bid submission. Failure to include this Addendum may be cause for rejection. If you have any questions, please contact our office by email at [email protected].
ALL OTHER SPECIFICATIONS, TERMS AND CONDITIONS REMAIN UNCHANGED. Acknowledgement by Bidder: Company Name: _________________________ Print Name: _____________________________ Signed: ______________________________ Date: ______________________________
(To be added to and made part of the Tender Documents) The following changes or modifications shall be made to the Tender Documents: TO THE SPECIFICATIONS SECTION 00 21 00 –INFORMATION TO TENDERERS Page 3, delete Subsection 15.3, and replace the following:
.3 Head amendment or withdrawal as follows: “[Amendment]/[Withdrawal] of Tender for Hemlock
Reservoir, Contract No. T02.2020”. Sign as required for Tender, and submit prior to time of Tender
Closing.
SECTION 26 90 00 – PRIMARY PROCESS INSTRUMENTATION DEVICES AND CABLING Page 1, delete subsection 1.1.2.2, and replace with the following:
.2 Halifax Water Tech Services will upgrade and expand the existing RTU panel, including new I/O and
power terminal strips. The Contractor is responsible for the supply, installation, cabling, termination,
testing and commissioning of the new I/O to the existing RTU.
SECTION 00 74 00 – SUPPLEMENTARY SPECIFICATIONS Page 37, within the supplements to Section 31 21 00, add the following:
Page 10, add subsection 3.8.2.as follows:
.2 Exterior reservoir ringwall foundation backfill material to be Type 2 gravel to a minimum of 500 mm
from the structure. Remaining exterior backfill to be native materials. Interior backfill to be as
shown on the Project Drawings.
SECTION 33 47 20 – WELDED STEEL RESERVOIR AWWA D100 TYPE Page 6, add new subsection 1.7.9 as follows:
To All Bidders of T02.2020: Please note: the following addendum and attachment provided by CBCL applies to T02.2020 and shall be taken into consideration when preparing bid documents.
The attached PDF document to be added to and made part of the Tender documents.
A signed copy of each Addendum must also be included with the bid submission. Failure to include this Addendum may be cause for rejection. If you have any questions, please contact our office by email at [email protected].
ALL OTHER SPECIFICATIONS, TERMS AND CONDITIONS REMAIN UNCHANGED. Acknowledgement by Bidder: Company Name: _________________________ Print Name: _____________________________ Signed: ______________________________ Date: ______________________________
(To be added to and made part of the Tender Documents) The following changes or modifications shall be made to the Tender Documents: CLARIFICATION TO GEOTECHNICAL REPORT Q1: The geotechnical report describes a requirement for a CP system under the tank, however this is not
shown on the drawings or described in the specification. Is a soil side impressed current CP system required
under the tank? If so, can a specification be provided?
A1: A cathodic protection system under the tank is not required.
TO THE SPECIFICATIONS SECTION 00 53 43 – FORM OF AGREEMENT Page 4, delete Article A5.9.
SECTION 00 74 00 – SUPPLEMENTARY SPECIFICATIONS Page 7, with the supplements to Section 01 10 00 – General Requirements, add the following to the end of
subsection 2.7:
“A building permit is not required.”
SECTION 33 47 20 - WELDED STEEL RESERVOIR - AWWA D100 TYPE Page 3, delete subsection 1.4.2 and replace with the following:
.2 Upon request by the Owner the successful bidder will be required to provide the following documentation:
.1 Years of experience in the design and construction of the type of tank being proposed.
.2 A list of three (3) structures and their locations of comparable size, operating satisfactorily for a minimum of five (5) years. Include names and telephone numbers of references that may be contacted. Page 6, add subsection 1.7.5.4 as follows:
.4 Footing parameters: A foundation depth of 1.2m is considered to be the minimum depth for the
footing. A footing width of 1600mm is considered to be the minimum footing width.
Page 7, add new subsection 2.1.2 as follows:
.2 Minimum floor plate thickness to meet the AWWA D100 Standard.
Page 7, add new subsection 2.2.3 as follows and renumber subsequent subsections:
.3 Roof is to be a dome configuration. Umbrella and cone roof designs are not acceptable.
Page 9, add new subsection 2.3.1.4.8 as follows:
.8 Provide a 1.5m x 1.0m landing platform.
Page 14/15, delete subsections 3.4.2, 3.4.3, 3.4.4 and replace with the following:
.2 Employ the services of a Geotechnical Engineer, who is licensed to practice in Nova Scotia, and have
them confirm subgrade conditions and bearing capacity, backfilling, and compaction meet
specifications and are properly compacted. Provide geotechnical testing at no additional cost to the
contract.
.3 Excavate the existing rockfill down to the proposed underside of footing within the proposed reservoir
ringwall foundation footprint and compact the exposed subgrade with a ten (10) tonne static steel
drum roller. Repair weak or soft areas as directed by the Contractor’s geotechnical engineer and the
Owner.
.4 Excavate the existing rockfill down to the proposed subgrade within the proposed reservoir perimeter
and compact the exposed subgrade with a ten (10) tonne static steel drum roller. Repair weak or soft
areas as directed by the Contractor’s geotechnical engineer and Owner.
.5 Place and compact backfill materials in accordance with approved design submission to 100 percent
Modified Proctor Dry Density at optimum moisture content.
TO THE DRAWINGS
DRAWING NO. C102 - RESERVOIR DETAILS
Detail 1 – Typical Foundation Wall. Delete note “See note 19 Sheet C100” and replace with “Refer to Section
33 47 20 for details”
CBCL Limited February 14, 2020
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Date: February 4, 2020
Addendum # 1
T02.2020 Title: Hemlock Reservoir
To All Bidders of T02.2020: Please note: the following addendum and attachment provided by CBCL applies to T02.2020 and shall be taken into consideration when preparing bid documents.
The attached PDF document to be added to and made part of the Tender documents.
A signed copy of each Addendum must also be included with the bid submission. Failure to include this Addendum may be cause for rejection. If you have any questions, please contact our office by email at [email protected].
ALL OTHER SPECIFICATIONS, TERMS AND CONDITIONS REMAIN UNCHANGED. Acknowledgement by Bidder: Company Name: _________________________ Print Name: _____________________________ Signed: ______________________________ Date: ______________________________
(To be added to and made part of the Tender Documents) The following changes or modifications shall be made to the Tender Documents: TO THE SPECIFICATIONS SECTION 00 21 00 – INFORMATION TO TENDERERS Page 1, within subsection 1, delete lines 7 and 8 and replace with the following: Closing at 2:00 p.m., Atlantic Time, Thursday, February 27, 2020 SECTION 00 41 43 – TENDER FORM Delete Section 00 41 43 – Tender Form and replace with new Section 00 41 43 dated February 3, 2020, attached.
SECTION 01 10 00 – GENERAL REQUIREMENTS Page 13, within the Supplementary Specifications delete subsection 18.3 and replace with the following: .3 Equipment to be sound attenuated. Sound levels at the property line shall not exceed 80 dBa for
an 8 hour weighted average (Leq) during work hours. For all other times, sound levels at the property line should not be perceptible above background levels. Clause 18.1 shall prevail at all times even if noise from the site is in compliance with this clause.
Page 13, within the Supplementary Specifications add new subsection 1.8.5 as followings: .5 Monitor noise prior to and during construction by a qualified independent testing firm. Have
noise measurements taken at a minimum of four (4) locations around the property line nearest to residential receptors, or as otherwise directed. Monitor noise daily, when requested, and submit results submitted weekly, unless otherwise requested. Follow the Nova Scotia Environment Guidelines for Environmental Noise Measurement and Assessment.
Page 17, within the Supplementary Specifications delete subsection 27.4 and replace with the following: .4 This tank is located in a residential area. Take necessary precaution to fully protect the
environment, the workers, traffic, parked vehicles, adjacent property, and other portions of the work site from damage caused by cleaning debris, blast cleaning materials, dirt, dust, equipment oils, solvents, acids, burning matter, and paint drifts, drops, or spray and splatter.
Page 17, within the Supplementary Specifications delete subsection 27.8. Page 28, within the Supplementary Specifications delete subsection 44 and replace with the following: 44. DUST CONTROL .1 Provide sufficient means to control dust generated
during blasting or other construction activities. Conduct abrasive blasting in such a manner to minimize dust release. Refer to subsection 27 Environmental Protection for additional requirements.
.2 Ventilation of the tank interior to use a dust collector
system, complete with baghouse and filters. Size the dust collector appropriately to handle to the job intended.
.3 To minimize on site blasting, clean (abrasively blast)
and prime all exterior metal surfaces in a controlled shop environment in accordance with Section 33 47 20. Complete the cleaning of exterior metal surfaces using small nozzle blasting.
.4 Monitor particulates during construction by a qualified
independent testing firm. Take measurements at a minimum of four (4) locations around the property line or as otherwise directed. Sampling locations should be dynamic and determined daily considering residential receptors and wind direction. Monitor particulates daily, and submit results weekly, unless otherwise requested. Establish background levels and monitoring particulates from the site, prior to, and during construction. Measure particulates for the following: .1 Total Suspended Particulate (TSP) 24 hour average.
The maximum permissible ground level concentration is 120 microgram per cubic metre in accordance with the Nova Scotia Environment Air Quality Regulations.
.2 Particulate Matter (PM10) 24 hour average
.3 Fine Particulate Matter (PM2.5) 24 hour average
.5 Provide a dust control plan to the Engineer for review.
SECTION 01 22 00 – MEASUREMENT AND PAYMENT Page 34 within the Supplementary Specifications, add the following two new pay items 19 and 20 as follows: 19. Noise Monitoring
Unit of Measurement (per day)
This item includes: providing noise level monitoring by a qualified independent testing firm, weekly
reports and to establish background levels in advance of construction.
20. Dust Monitoring
Unit of Measurement (per day)
This item includes: providing dust and particulate level monitoring by a qualified independent
testing firm, weekly reports and to establish background levels in advance of construction.
SECTION 33 47 20 ‐ WELDED STEEL RESERVOIR ‐ AWWA D100 TYPE Page 11, add the following to the end of subsection 2.4.5.1: “The lower level limit to be at elevation 116.24 m.” Page 13, add new subsection 2.7.2 as follows: .2 Logo colours are to be as follows .1 Blue: Pantone 7455. .2 Orange: Pantone 7413 .3 Refer to graphic in Appendix F for additional details SECTION 40 20 00 – PROCESS MECHANICAL PIPING, VALVES AND APPURTENANCES Delete Section 40 20 00 – Process Mechanical Piping, Valves and Appurtenances and replace with new Section 40 20 00 dated February 3, 2020, attached. SECTION 46 30 00 – CHEMICAL FEED EQUIPMENT Delete Section 46 30 00 – Chemical Feed Equipment and replace with new Section 46 30 00 dated February 3, 2020, attached.
TO THE DRAWINGS DRAWING E100 – SITE PLAN, CONTROL CHAMBER PLAN & DETAILS Delete Drawing E100 – Site Plan, Control Chamber Plan & Details and replace with new drawing E100 dated February 3, 2020. DRAWING E101 – DETAILS, SCHEDULES, I/O & WIRING DIAGRAM Delete Drawing E101 – Details, Schedules, I/O & Wiring Diagram and replace with new drawing E101 dated February 3, 2020. APPENDICES Add Appendix F – Halifax Water Logo attached. CBCL Limited February 4, 2020
Hemlock Reservoir Section: 00 41 43 T02.2020 Page 1 Tender Form – Addendum No. 1 February 3, 2020
2016 Revisions
1. SALUTATION:
.1 To: Halifax Regional Water Commission
450 Cowie Hill Road, P.O. Box 8388 RP0 CSC,
Halifax, NS B3K 5M1
.2 For: Hemlock Reservoir
Contract No. T02.2020
.3 From:
2. TENDERER DECLARES:
.1 That this tender was made without collusion or fraud. .2 That the proposed work was carefully examined. .3 That the Tenderer was familiar with local conditions.
.4 That Contract Documents and Addenda No. to inclusive were carefully examined.
.5 That all the above were taken into consideration in preparation of this Tender.
3. TENDERER AGREES:
.1 To enter into a contract to supply all labour, materials and equipment and to do all
work necessary to construct the Work as described and specified herein for the unit prices stated in Subsection 4 hereunder, Schedule of Quantities and Unit Prices.
.2 That the total tendered price shall be the sum of the products of the tendered unit
prices times the estimated quantities in Subsection 4 hereunder. .3 That this Tender is valid for acceptance for 90 days from the time of Tender Closing.
Hemlock Reservoir Section: 00 41 43 T02.2020 Page 2 Tender Form – Addendum No. 1 February 3, 2020
2016 Revisions
.4 That measurement and payment for items listed in Subsection 4 hereunder shall be in accordance with corresponding items in Section 01 22 00 Measurement and Payment.
.5 The value of the liquidated damages payable to the Owner for the duration of the
Period of Delay is $1,000.00 per day as detailed in Section 00 73 00 Supplementary Specifications, GC 6.5.
.6 In addition to the information required to be submitted by Section 00 43 00, Halifax
Water may require further information to be provided within 7 days of request, which information may include: experience in similar work, work currently under contract, senior supervisory staff available for the project, equipment available for use on project, and financial resources.
.7 To execute in triplicate the Agreement and forward same together with the specified
contract security and insurance documents to the Owner within 14 days of written notice of award.
.8 That failure to enter into a formal contract and give specified insurance documents
and contract security within time required will constitute grounds for forfeiture of certified cheque or enforcement of bid bond.
.9 That if certified cheque is forfeited, Owner will retain difference in money between
amount of Tender and amount for which Owner legally contracts with another party to perform the Work and will refund balance, if any, to Tenderer.
.10 That the Contract Documents include:
.1 The 2019 updated version of the Standard Specifications for Municipal Services.
.2 Project Documents: .1 00 20 00 Overview .2 00 21 00 Information to Tenderers .3 00 41 43 Tender Form .4 00 43 00 Supplementary Tender Information .5 00 53 43 Form of Agreement .6 00 74 00 Supplementary Specifications .7 07 13 00 Sheet Membrane Waterproofing .8 07 21 19 Foamed-In-Place Insulation .9 09 91 23 Painting .10 26 05 00 Electrical General Requirements .11 26 05 01 Electrical Materials – Equipment & Distribution .12 26 29 23 Variable Speed Drives .13 26 90 00 Primary Process Instrumentation Devices and Cabling .14 33 11 00 Water Mains .15 33 47 20 Welded Steel Reservoir AWWA D100 Type .16 40 20 00 Process Mechanical Piping, Valves and Appurtenances
Hemlock Reservoir Section: 00 41 43 T02.2020 Page 3 Tender Form – Addendum No. 1 February 3, 2020
.19 Appendix A –Halifax Water Contractor Health and Safety Policy Forms .20 Appendix B – Police Record Check .21 Appendix C – Environmental Management System .22 Appendix D – Geotechnical Investigation .23 Drawings
Cover Sheet C100 Overall Site Plan C101 Reservoir Plan and Section C102 Reservoir Details C103 Reservoir Details C104 Reservoir Details C105 Reservoir Details P100 Control Chamber – General Layout and Details E100 Site Plan, Control Chamber Plan & Details E101 Details, Schedules, I/O & Wiring Diagram
.24 Addenda as issued and as confirmed in subsection 2.4 of this section. 4. SCHEDULE OF QUANTITIES AND UNIT PRICES
Item No.
Description Unit of
Measurement EstimatedQuantity
Unit Price
$ Amount
A. RESERVOIR
1. Water Reservoir .1 Reservoir
L.S.
1
.2 Logo L.S. 1
2. Reservoir Mixing System L.S. 1
3. Yard Piping .1 Inlet/Outlet Pipe
.1 600 mm Dia. DI .2 400 mm Dia. DI
m m
80 8
.2 Reservoir Drain Pipe – 250mm Dia. DI
m
9
.3 Reservoir Overflow Pipe – 450mm Dia. DI
m
6
.4 Pressure Sensing Line – 20mm Dia. Copper Type K
m
17
.5 Storm Sewer .1 600mm Dia. Concrete
m
14
Hemlock Reservoir Section: 00 41 43 T02.2020 Page 4 Tender Form – Addendum No. 1 February 3, 2020
2016 Revisions
Item No.
Description Unit of
Measurement EstimatedQuantity
Unit Price
$ Amount
.6 Motive Water Line – 100mm Dia. Glass Lined DI.
m 17
4. Direct Buried Valves
.1 Butterfly Valve – 600mm Ea 2
.2 Gate Valve – 250mm Ea 2
5. Manhole .1 1800 Dia.
Ea
1
6. Concrete Headwall Ea 1
7. Chain Link Fence and Gate .1 Chain Link Fence – 2.4m
13. Direct Buried Conduit .1 53 mm Dia. .2 104 mm Dia.
L.S. L.S.
1 1
14. Electrical/Control L.S. 1
15. Environmental Controls L.S. 1
16. Utility Pole L.S. 1
17. Fire Hydrant Ea 1
18. Rip Rap m2 24
19. Noise Monitoring Days 150
20. Dust Monitoring Days 50
Hemlock Reservoir Section: 00 41 43 T02.2020 Page 5 Tender Form – Addendum No. 1 February 3, 2020
2016 Revisions
SCHEDULE OF QUANTITIES AND UNIT PRICES
SUMMARY
Total Tendered Price (Excluding HST) $
Add HST (15% of Total Tendered Price) $
Estimated Contract Price $
Tenderer’s HST Registration No. 5. COMPLETION TIME
.1 Tenderer agrees to complete the Work within weeks of the issuance of an order to
start work.
Hemlock Reservoir Section: 00 41 43 T02.2020 Page 6 Tender Form – Addendum No. 1 February 3, 2020
2016 Revisions
6. SIGNATURE*
DATED THIS DAY OF , 2020. [Seal]
Name of Firm Tendering
Witness Signature of Signing Officer
Name and Title (printed)
Witness Signature of Signing Officer
Name and Title (printed)
Company Address
Telephone No.
Fax No.
*NOTE: Tenders submitted by or on behalf of any Corporation must be signed and sealed in the
name of such Corporation by a duly authorized officer or agent.
*****End of Section 00 41 43*****
Halifax Water PROCESS MECHANICAL Section 40 20 00 Hemlock Reservoir PIPING, VALVES AND Page 1 Contract No. T02-2020 APPURTENANCES February 3, 2020 Addendum No. 1
PART 1 - GENERAL
1.1 WORK INCLUDED
.1 The Work of this Section consists of furnishing all materials, labour, tools and equipment and performing all operations necessary to complete all water and process piping, valves, chemical piping, and connection to equipment inside the chambers and reservoirs.
.2 The division of responsibility between interior piping, as
specified herein, and yard piping is considered to be the first joint or fitting (the fitting would be specified under water mains) outside the building or a maximum distance of 1500 mm or as shown on the drawings.
.3 The Work includes but is not limited to: the supply and
installation of pipes, hangers and supports, fittings, valves, couplings, actuators, connections to equipment, pressure gauges, and all other appurtenances, disinfection of pipes, and carrying out of all hydrostatic and leakage tests.
.4 Provide pipes and appurtenances in accordance with details
shown on the Drawings and must be suitable for the purpose for which they are specified. Do not install any pipe until the manufacturer's name and test certificate have been submitted to the Engineer for approval.
1.2 RELATED SECTIONS
.1 General Requirements: Section 01 10 00. .2 Electrical: Division 26. .3 Water Main: Section 33 11 00. .4 Primary Process Instrumentation Devices and Cabling:
Section 26 90 00.
1.3 REFERENCES
.1 ANSI/ASME B16.1-2015, Gray Iron Pipe Flanges and Flanged Fittings. Class 25, 125, 250 and 800.
compendium. .19 ANSI/ASTM D2564-12 (2018), Standard Specification for
Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems.
1.4 INTENT .1 The intent of these specifications is to provide the Works fully complete in every detail for the purpose designated. Furnish any apparatus, appliance, material or labour not herein specifically mentioned or included but requisite to the operation of the apparatus and equipment specified without additional expense to the Contract.
1.5 CONTRACT DRAWINGS
.1 The Drawings are not to be considered as detail or shop drawings but as a guide to the general intent based on the materials specified.
1.6 SHOP DRAWINGS
.1 Submit shop drawings in accordance with Section 01 10 00. .2 Submit shop drawings to the Engineer for review, showing
the layout of piping, valving, special fittings and appurtenances he plans to furnish before ordering. Detail piping arrangements so as to relate specifically to the type of equipment and fittings to be installed. Layout information must also indicate the size, type and location of floor and wall penetrations for piping arrangements. Submit any changes in the layout of piping or equipment due to the acceptance of alternates with dimensioned scaled drawings for approval by the Engineer. Furnish shop drawings in accordance with Section 01 10 00.
.3 Provide shop drawings for the following:
.1 Pipe and fittings.
.2 All valves, gates and actuators.
.3 Pressure gauges and accessories.
.4 Solenoid valves.
Halifax Water PROCESS MECHANICAL Section 40 20 00 Hemlock Reservoir PIPING, VALVES AND Page 4 Contract No. T02-2020 APPURTENANCES February 3, 2020 Addendum No. 1
.5 Disinfection procedures and plan.
1.7 OPERATING AND MAINTENANCE MANUAL INSTRUCTIONS
.1 Provide operating and maintenance data for incorporation into the Maintenance Manuals in accordance with Section 01 10 00 for the following items: .1 All valves, gates and actuators. .2 Pressure gauges and accessories. .3 All piping materials and special fittings.
.2 Provide instructions including step-by-step directions for
starting up and shutting down water systems, valves, turning on and off of motor switches, etc., step-by-step directions for minor troubleshooting, and periodic maintenance instructions such as cleaning, oiling, etc., for all equipment in this Contract, including type of lubricant.
.3 All bulletins to pertain to equipment installed on this job
only. General bulletins describing items of equipment not installed on this job will be rejected.
.4 Preface instructions by a simple description of the entire
system, explaining its purpose and operation so that a person completely unfamiliar with the building can operate all systems by following the instructions.
.5 Include preparation of such instructions and schematic
diagrams as part of the work under this Section. .6 Each manufacturer to submit recommended list of spare
parts with maintenance manuals.
1.8 CO-OPERATION WITH OTHER TRADES
.1 In areas where ducts, piping and electrical fixtures are in close proximity to each other, co-operate fully with the other trade in laying out the location of valves, piping and appurtenances.
.2 Immediately report areas of conflict to the Engineer for
comments. No work may be installed until corrective measures are approved.
.3 Take special care with structural coordination. .4 Prepare interference pipe layout drawings prior to
Halifax Water PROCESS MECHANICAL Section 40 20 00 Hemlock Reservoir PIPING, VALVES AND Page 5 Contract No. T02-2020 APPURTENANCES February 3, 2020 Addendum No. 1
construction and submit these to the Engineer for review. These drawings must clearly indicate all necessary associated trade work such as light fixtures, cable trays, ducts, etc.
1.9 INSPECTION .1 All manufacturing operations and finished pipes, fittings and appurtenances subject to inspection by the Engineer. Furnish all labour necessary to assist the Inspection Authority in inspecting to inspect the materials.
PART 2 - PRODUCTS
2.1 PIPE SYSTEMS
.1 Steel Pipe: for use in water reservoir: .1 Pipe material: carbon steel pressure pipe to AWWA C200 and certified to CSA Z245.1 designed in accordance with AWWA Manual M11. Piping system to be Certified ANSI/NSF Standard 61, suitable for potable water systems. .2 Size: as indicated. .3 Pipe Schedule: as indicated. .4 Pipe joints: Welded or flanged to AWWA C200. .5 Fittings: shall conform to the dimensions of AWWA C208. Pipe material used in fittings shall be of the same material and pressure class as the adjoining pipe. .6 Coatings and linings: to AWWA C210. Interior linings to be certified to ANSI/NSF Standard 61. .7 Flanges and Bolt assemblies: to AWWA C207 .8 No field welding. Spools to be factory coated after fabrication. .9 Glass Lined Steel pipes: used for motive water piping as shown on the drawings shall be glass lined meeting ASTM B1000 with an average of 0.2 mm in glass thickness. Glass shall have a hardness of approximately 400 on the Knoop scale or 5.5 on the Mohr scale. The glass shall be resistant to corrosion and shall withstand an instantaneous differential thermal shock of 150°C.
.2 Stainless Steel (SS) for Chamber piping: .1 Pipe material: 316L stainless steel. .2 All pipe and fittings must be manufactured to ASTM A778 or ASTM A774 from sheet and plate of domestic origin confirming to ASTM A240, A-316L. Sheet finish to be plate finish No. 1. Pipe and fittings to be
Halifax Water PROCESS MECHANICAL Section 40 20 00 Hemlock Reservoir PIPING, VALVES AND Page 6 Contract No. T02-2020 APPURTENANCES February 3, 2020 Addendum No. 1
certified ANSI/NSF Standard 61. .3 Supply pipe and fittings for service up to 1350 kPa operating pressure and maximum 95°C and in the following nominal wall thicknesses:
.1 Schedule 10S. .4 Fittings: elbows to 600 mm to be smooth flow Schedule 10 design. .5 Flanges: to AWWA C228 .8 Grooved end couplings are an acceptable alternative provided they are rigid style Victaulic Model No. 489 or approved equivalent. .9 Gaskets: 3.2 mm thick Buna N composition or Neoprene suitably reinforced. .10 Minimize field welding of pipe. .11 Bolt assemblies to be stainless steel meeting the requirements of AWWA C228. .12 Welding in fabricator's shop and in the field shall be performed by qualified welders to approved procedures. Welding rod or wire shall be of the same composition or superior to the pipe and fitting material. The weld deposit at the seam shall have a slight crown on both sides of the weld and no cracks or crevices shall be allowed. Excessive weld deposits, slag, weld splatter and projections into interior of the pipe shall be removed by grinding. .13 Acceptable Manufacturer and Fabricator: Douglas Barwick or approved equal.
.3 PVC (Rigid) Pipe for Chemical Dosing:
.1 Pipe material: polyvinyl chloride (PVC) pressure pipe to ANSI/AWWA C900 and certified to CSA B137. .2 Size: as indicated. .3 Class: IPS Schedule 80. .4 Pipe joints: solvent cemented, cement to ANSI/ASTM D2564 except clauses 5.5 and 6.3.3. .5 Fittings: PVC Class 150, solvent weld moulded fittings. .6 Flanges: PVC in accordance with ASTM A181, Grade 1-150 lbs., with neoprene gaskets. .7 Provide flanges and flange to socket transitions where applicable and as shown on the drawings, suitable to connect to valves and equipment. Fittings 50 mm and below are not necessarily shown on the drawings and may be threaded or solvent cemented. .8 Use long-radius bends on rigid PVC chemical dosing lines.
Halifax Water PROCESS MECHANICAL Section 40 20 00 Hemlock Reservoir PIPING, VALVES AND Page 7 Contract No. T02-2020 APPURTENANCES February 3, 2020 Addendum No. 1
.9 All materials must be NSF approved. .4 Flexible Coupling:
.1 Carbon steel, solid sleeve flexible coupling complete with high strength low alloy steel nuts to ASTM A3125 type 3, AISI C1018 steel follower, standard grade 30 rubber gaskets and blue shop coat, enamel finish.
.5 Flex Tubing:
.1 Pipe material: linear low density polyethylene (LLDPE) pressure rated for above 100psi. Certified to NSF 61 (opaque). .2 Fitting: body acetal copolymer or brass, compression type pressure rated for 1400 kPa. Use collars as recommended by manufacturer.
.1 Acceptable product: Taco compression tube fittings or approved equal.
reinforcement pressure rated to 50 psi certified to NSF 61. .2 Fittings: stainless steel cam lock
.7 Ductile Iron (DI) Pipe and Fittings .1 Refer to Section 33 11 00 subsection 2.11. .8 Copper Tube and Fittings .1 Refer to Section 33 11 00 subsection 2.19.
2.2 MOTORIZED ACTUATORS .1 Actuators: applicable to process valves as identified on the drawings. Size, type of actuator, service and accessories as indicated on the drawings. .1 Intent: that valves, actuators and accessories shall be compatible and form a complete system suitable for the intended operation and operating conditions noted. The actuators and valves must be assembled, factory mounted and tested prior to delivery to the site. .2 Quarter Turn Valves (Open/Close):
.1 Required torque must not exceed the maximum output of the actuator under any operating conditions. .2 Emergency manual override (handwheel) operator. Handwheel to be manually de-clutchable and be mechanically independent of the motor.
Halifax Water PROCESS MECHANICAL Section 40 20 00 Hemlock Reservoir PIPING, VALVES AND Page 8 Contract No. T02-2020 APPURTENANCES February 3, 2020 Addendum No. 1
.3 Actuator must have continuous local indication of valve position and shall have 4:1 adjustable speed control. .4 Actuator must be suitable for remote control and be equipped with open and close limit switches along with six (6) independently adjustable limit switches. .5 Provide actuator complete with ModBus communication module. .6 Unit to have integral reversing starter and control transformer. Actuator enclosure must be watertight to NEMA 4X. .7 Actuator to have lockable local-off-remote switch and open-stop-close selector. .8 Acceptable product (size 350mm dia. and lower): ROTORK or approved equivalent 120 V, single phase, 60 Hz.
2.3 BUTTERFLY VALVES .1 Wafer type butterfly valves, flangeless, resilient seated, castiron with factory applied corrosion resistant coating, wafer style body suitable for installation between ANSI B16.1 flanges. Seats of EPDM, suitable for use with drinking water (NSF-61 certified). Shafts to be one (1) piece of 416 stainless steel, finish ground and polished with EPDM shaft seals. Provide shaft bushings above and below disc. Discs to be stainless steel or nylon-coated ductile iron. The disc to shaft connections shall be type 316 stainless steel. Pins, shaft and disc of all valves shall be individually machines and completely interchangeable.
.1 Provide motorized actuators for valves as shown on the drawings. Refer to subsection 2.2 herein for motorized actuator requirements. Mount actuators to valves and test in an assembly shop approved by the valve manufacturer.
.2 Acceptable products: Keystone, DeZurik, Bray, or approved equivalent.
2.4 VALVES AND MISCELLANEOUS ITEMS
.1 Ball valves: .1 Size 25 mm and smaller (bronze): three (3) piece body, 4150 kPa rated, full port ball valve with stainless steel balls and with threaded end connections. Standard of acceptance: Watts Series B-6800, Crane Series 9000, Nibco, Velan or approved equivalent.
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.2 Ball valves for chemical feed: .1 Ball valves (inter-connecting process piping):
Fabricated from polyvinyl chloride with Teflon seats and EPDM seals. True union (Safe-Blocking Valve) connections.
.1 Acceptable product: Chemline Series 21, Chemtrol or approved equivalent.
.3 Hose bibs:
.1 Angled brass globe valve complete with integral vacuum break and backflow protection. .2 12mm male NPT x 18mm hose thread. .3 Sill cock must be permanent and complete with tamper-proof protection. Disconnecting the vacuum breaker portion of the valve must make a hose connection impossible. .4 Acceptable products: Watts Model HB-1.
.4 Pressure gauge: .1 General: supply all pressure gauges and isolation cocks from a single manufacturer. .2 Pressure gauge: 115 mm size, black fiberglass reinforced case, filled with glycerin. Stainless steel bourdon tubes and sockets. Range, as noted with, accuracy to within ± 0.5% of span. Connections 1/2" NPT brass. .3 Provide isolation cock between gauge seal and pipe connections. .4 Provide one (1) additional gauge (0-150 psi). Turn over as spare. .5 Acceptable product: Trerice Model No. 450 LFSS, Wika Type 233.34, Ashcroft Model 1279, Winters P5000. .6 Identify sizes to match each instrument during shop drawing preparation.
.5 Altitude gauge:
.1 Pressure gauge: 115 mm size, Aluminum, filled with glycerin. Stainless steel bourdon tubes and sockets. Range, 0 – 70m (0-230 ft) with, accuracy to within ± 0.5% of span. Connections 1/2" NPT stainless. .2 Provide isolation cock between gauge seal and pipe connections. .3 Provide one (1) additional gauge 0 – 70m (0-230 ft). Turn over as spare. .4 Acceptable product: Winters PAL Altitude Pressure Gauge
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.5 Identify sizes to match each instrument during shop drawing preparation.
.7 Diaphragm Type Globe Reduced Port Inlet Flow Control Valve: .1 General: 400 mm diameter one-way electronically controlled, hydraulically operated reduced port globe style altitude valve with inner valve assembly both top and bottom guided by means of replaceable bearing bushings. Main valve complete with a direct acting, spring loaded, diaphragm actuated pressure sustaining and altitude pilot valve. The main valve shall be limited from opening using an accessory valve limiter installed on the stem cap or spring casing over the main valve. The valve will operate under the following hydraulic conditions: .1 Flows: 960 -7,675 USGPM (60 – 485 l/s) .2 Upstream Pressure: 96 – 108 psi (520-545 ft
ft Hydraulic Grade Line). .2 Function: The main valve is normally open but does not open beyond the main valve limiting setting. The main valve closes when the upstream pressure drops below the pressure sustaining pilot set-point, a normally open solenoid pilot is energized or the level in the reservoir as measured by an altitude pilot reaches set-point. .3 Body: ductile iron to ASTM A536, with heat fused internal and external epoxy coating to NSF 61 or FDA standards and 150 lb. flanges complete with dual limit switches. .4 Seat: stainless steel stationary seat, with abrasion and erosion resistant mechanically held, polyurethane disc. Valve actuation via a flat diaphragm and consist of nylon fabric, bonded with synthetic rubber. Lip seals or packing may not be used to seal actuator. .5 Piloting: .1 3-way altitude control pilot with a spring to
adjust the reservoir maximum level setting. Altitude pilot body to be serviceable without removing the
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pilot from the valve. .1 The altitude pilot trim, consisting of a replaceable inner valve to be constructed of AISI 316 stainless steel. Pilot body and diaphragm casing to be constructed of ASTM A536 ductile iron with fusion bonded epoxy coating. .2 Altitude pilot elastomers: diaphragm and seals to be of EPDM or Buna-N. .3 Adjustable altitude pilot spring range to be 12-38m. The altitude pilot shall be pre-set at 31.2 m.
.2 Differential control pilot to be a normally closed with a spring to adjust the reservoir level differential/drawdown setting. The differential pilot body and diaphragm casing shall be constructed of 303 stainless steel and seals matching that of the altitude pilot. The adjustable differential pilot spring range shall be supplied 1.5-4.6m or 10 to 50 feet (3-15m).
.3 Pressure Sustaining Pilot to maintain upstream pressure at all times, constructed of ASTM A351 CF8M stainless steel. The adjustable spring range shall be supplied 20-200 psi and set to 68 psi (Upstream HGL 520 ft)
.4 The solenoid pilot valve shall solenoid valve with satisfactory pressure rating and flow capacity for the service conditions and operation requirements. Solenoid valve coil voltage shall be 110-120VAC 50/60Hz with a NEMA 4X enclosure. Solenoid valve body material shall 303/304 stainless steel.
.6 The pilot tubing shall be supplied AISI 316 stainlesssteel. .7 Opening and closing speed controls shall be provided. An adjustable needle valve closing speed control shall be constructed of 316 stainless steel with handle operator. .8 Pilot isolation ball valves shall be supplied as standard. Pilot isolation ball valves shall be constructed of 316 stainless steel with stainless steel handle operator. .9 A pilot strainer shall be supplied as standard. Strainer material to be ASTM A351 CF8M stainless steel with a 40-mesh 316 stainless steel screen. The external pilot strainer shall have a removable plug for easy
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maintenance access to the pilot screen and have provision for installation of a ball valve for pilot screen flushing. .10 Diaphragm valve to be supplied with dual limit switches to indicate valve closed or valve open. .11 Acceptable manufacturers:
.1 Singer Valve
.2 Cla-Val .8 Outside Stem and Yoke (OS&Y) Gate Valve: .1 Refer to Section 33 11 00, subsection 2.11 .9 Pressure Relief/Regulating Valves for Chemical Feed:
.1 Select valves based on pipe sizes as indicated on drawings. PVC body with EPDM seats and seals, true-union connections. .2 Acceptable products: Chemline Series SB12 relief valves, Chemline Series SR50 regulating valves, or approved equivalent.
.10 Modular Water-stop Seals:
.1 For pipes through or into concrete or at a location or elevation which may be below finished grade or a liquid level, a modular water stop seal (sleeve) maybe installed. .2 Furnish sleeves from the manufacturer of the material supplied for the annular space. Coordinate sleeve sizes with the carrier pipe size and material for complete compatibility. Sleeves to be galvanized steel with an intermediate water stop collar with a continuous double fillet weld. .3 Sleeve Size:
.1 For walls, the ends of the sleeve must be flush with the wall faces. .2 Sleeves to have an inside diameter at least one inch larger than the pipe outside diameter and of the correct size to provide for the material specified for the annular space.
.4 Annular Space: .1 For sleeves installed submerged or below grade, seal the annular space watertight with mechanically expanded interlocking synthetic rubber links. Nuts and bolts to be zinc coated steel.
.5 Acceptable manufacturer: Link-Seal, Pen-Seal Proco, or approved equivalent.
.11 Check Valve:
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.1 Refer to Section 33 11 00, subsection 2.11 .12 Diaphragm Type Globe Reduced Port Motive Water
Control Valve: .1 General: 100 mm diameter, one-way electronically controlled, hydraulically operated full port globe style flow control valve with inner valve assembly both top and bottom guided by means of replaceable bearing bushings. The valve will operate under the following hydraulic conditions: .1 Flows: 140 - 160 USGPM (8.8 – 10.1 l/s) .2 Upstream Pressure: 98 – 106 psi (523-539 ft
539 ft Hydraulic Grade Line). .2 Function: The main valve is normally closed and will open when a normally closed solenoid pilot is energized. The pilot shall discharge to atmosphere, not the downstream side of the valve. .3 Body: ductile iron to ASTM A536-84, with heat fused internal and external epoxy coating to NSF 61 or FDA standards and 150 lb. flanges. .4 Seat: stainless steel stationary seat, with abrasion and erosion resistant mechanically held, polyurethane disc. Valve actuation via a flat diaphragm and consist of nylon fabric, bonded with synthetic rubber. Lip seals or packing may not be used to seal actuator. .5 Piloting: .1 The solenoid pilot valve shall solenoid valve
with satisfactory pressure rating and flow capacity for the service conditions and operation requirements. Solenoid valve coil voltage shall be 110-120VAC 50/60Hz with a NEMA 4X enclosure. Solenoid valve body material shall 303/304 stainless steel.
.6 The pilot tubing shall be supplied AISI 316 stainlesssteel. .7 Opening and closing speed controls shall be provided. An adjustable needle valve closing speed control shall be constructed of 316 stainless steel with handle operator. .8 Pilot isolation ball valves shall be supplied as standard. Pilot isolation ball valves shall be constructed of 316 stainless steel with stainless steel handle operator. .9 A pilot strainer shall be supplied as standard.
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Strainer material to be ASTM A351 CF8M stainless steel with a 40-mesh 316 stainless steel screen. The external pilot strainer shall have a removable plug for easy maintenance access to the pilot screen and have provision for installation of a ball valve for pilot screen flushing. .10 Acceptable manufacturers:
.1 Singer Valve
.2 Cla-Val
PART 3 - EXECUTION
3.1 GENERAL
.1 Install piping in the locations indicated, and to the elevations and lines as shown on the Drawings.
.2 Fit pipes passing through concrete or masonry with sleeves,
except as noted on the drawings. Each sleeve must extend through the respective floor, wall or other structure, and be cut flush to each surface, unless otherwise specified. The inside diameter of all pipe sleeves must be at least 25 mm larger than the outside diameter of the passing pipe or pipe covering. Sleeves to be carbon steel ASTM A53 unless otherwise noted.
.3 Pipes entering concrete tanks or structures to have puddle
flanges embedded in the wall and be done by one of the methods shown on the Drawings.
.4 Co-ordinate location and furnish embedded items for
installation in poured-in-place concrete. .5 Cut pipes where necessary to obtain the exact location of
fittings or valves. Make necessary adjustments to make shop fabricated process piping fit properly as required.
.6 Run piping as directly as practical and make provisions for
expansion, jarring, vibrations and settling. .7 In the installation of piping, do not cut girders, beams or
other members of building in such a manner as to reduce strength of the girder, beam, or other member of the building below that required for the purpose for which it was intended.
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.8 Run pipes to avoid conflicts between pipes of different functions. Where conflicts between pipe locations occur, process pipe will have precedence over plumbing and heating pressure pipes, gravity pipes will have precedence over pressure pipes and large diameter pressure pipes will have precedence over smaller diameter pipes. Notify the Engineer of conflicts. The Engineer will provide the resolution.
3.2 JOINTING OF PIPE AND FITTINGS
.1 Where pipe is to be connected to equipment, fit pipe so that neither pipe nor equipment is strained during the joining procedure.
.2 Where flanged pipe and fittings are used, make joints with
3 mm Buna N or neoprene gaskets and bolts and nuts conforming to ASTM A307 for Grade B steel machine bolts and nuts. Tighten nuts alternately to a uniform torque to achieve even distribution of pressure on joint gasket and to avoid unequal stresses in flanges. Provide sleeve coupling, flanged adapter, victaulic coupling or vic-flange couple where shown on the Drawings or where required to install pipe or to permit future equipment or pipe removal for maintenance purposes.
.3 Where victaulic grooved pipe and fittings are used, do
jointing procedures in strict compliance with the manufacturer's instructions.
.4 Install PVC pipe and fittings and join with solvent welding
method in accordance with the manufacturer's instructions, using the correct solvent cement for the type of pipe used. Only use threaded joints at screwed end valves.
.5 Screwed pipes to be NPT. Make joints with graphite and oil
filler and adequate unions provided for ease of future uncoupling. Ream cut ends of pipe to remove burrs.
.6 Orient valves for ease of operation. Obtain Engineer's
approval of a particular orientation before completing joints.
.7 Install specialties and other like items in accordance with
the manufacturer's instructions. Provide small piping, or
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tubing, with fittings where required for their proper operation and servicing whether shown on the Drawings or not.
.8 Where PVC pipe joints or fitting joints have failed under
test or during operation, the entire joint must be replaced and repaired with new material. Re-cementing failed joints will not be accepted.
3.3 VALVES AND APPURTENANCES
.1 Install valves and appurtenances in strict accordance with the manufacturer's instructions and as directed by the Engineer.
3.4 PIPE CLEANING AND TESTING
.1 Flush and clean pipes upon completion. .2 Liquid pressure pipes will then be subject to a pressure test.
Fill pipe with water. Pressurize to 120 Psig. Examine pipe for leaks. Repair leaks. Remove and replace cracked or defective pipes, fittings or valves with sound material. The pipe work will be accepted when the applied test pressure of 120 kPa is maintained for thirty minutes without loss.
.3 Supply all equipment required to perform the above tests.
3.5 CLEANUP
.1 Upon completion of testing, remove all test equipment and cap holes to satisfaction of the Engineer.
.2 Clean and refurbish all equipment and fixtures and leave in
operating condition in preparation for final acceptance.
3.6 SUPERVISION INSPECTION AND START-UP FOR PRESSURE REDUCING VALVES
.1 Provide for on-site skilled supervision. A representative of the Supplier or manufacturer for the pressure reduction valves during set up and testing.
.2 The representative must be present to check the complete
installation, and for start-up of the equipment. Submit a written report signed by the representative to the Engineer stating the following: .1 That a satisfactory installation of the equipment has been performed, outlining modifications that have been made as a result of the commissioning or testing of the
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END
equipment. .2 That the equipment is now ready for permanent operation. .3 That operation and maintenance instructions for the equipment have been presented to the Engineer.
.3 A minimum period of one (1) day on site for skilled
supervision and instructions and a minimum of one (1) trip to the site should be assumed. Provide as many trips and days on site as necessary to complete the installation and put the equipment into satisfactory operation.
3.7 DISINFECTION
.1 Before commencing disinfection, provide to the Engineer, for approval, a detailed procedure for disinfection of the new piping system.
.2 Conduct disinfection procedure in accordance with AWWA
C653. .3 Coordinate the piping disinfection work with other water
main piping disinfection works. .4 Cover all costs associated with water quality testing during
disinfection procedures. Turn over all results to the Engineer for approval.
3.8 INSULATION
.1 Provide pipe insulation where indicated on the Drawing.
3.9 COMMISSIONING .1 Refer to section 01 10 00 for commissioning requirements.
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PART 1 - GENERAL 1.1 WORK INCLUDED .1 This Section specifies requirements for providing fully
assembled, skid mounted, pre-wired, chemical make down and metering systems. Provide chemical injection assemblies loose for installation. The work generally includes the supply, delivery, inspection, installation, testing, start-up of the complete systems.
1.2 GENERAL EQUIPMENT .1 All items of equipment supplied must be produced by SUPPLIERS companies regularly engaged in manufacturing this type of
equipment and who maintain service and parts departments from which service, repairs and replacements may be obtained quickly at all times.
1.3 INTENT .1 The intent of these specifications is to provide the works
fully complete in every detail for the purpose designated. Provide any apparatus, appliance material or labour not specifically mentioned or included, but requisite to the operation of the apparatus and equipment specified without additional expense to the Contract.
.2 The intent is also that all packaged chemical make down and metering systems are provided by a single supplier.
1.4 DESIGN .1 The design requirements for the individual chemical make REQUIREMENTS down and metering systems are described in Part 2 herein.
.2 Requirements for the following systems are provided: .1 Sodium Hypochlorite System.
1.5 REFERENCE .1 The work under this Section must conform to the STANDARDS AND applicable requirements of the National Building Code and CODES National Plumbing Code of Canada, National Fire
Protection Association, Underwriters Laboratories of Canada, and referenced standards throughout these Specifications of the American National Standards Institute (ANSI), American Society of Mechanical Engineers (ASME), American Water Works Association (AWWA), American Society of Testing and Materials (ASTM),
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Canadian Standards Association (CSA), and the Canadian General Standards Board (CGSB).
.2 Equipment assemblies comprised of electro-mechanical components must be CSA approved where possible and shall bear the appropriate label. If the equipment in question is not CSA approved as an assembly, have the manufacturer arrange and pay for Spot approval and labelling of the equipment prior to installation.
1.6 RELATED WORK .1 Electrical: Division 26
.2 Process: Division 40 1.7 SHOP DRAWINGS .1 Provide shop drawings as specified in Section 01 10 00 for
all equipment.
.2 Include details of equipment assembly, fabrication, control and installation.
1.8 EQUIPMENT .1 Fit process equipment with the manufacturer's IDENTIFICATION identification nameplates indicating size, equipment model,
manufacturer's name, serial number, voltage, cycle, phase and power motors, all factory supplied.
1.9 OPERATION AND .1 Provide operation and maintenance data for incorporation MAINTENANCE into Operation and Maintenance Manuals as specified in MANUALS Section 01 10 00.
PART 2 - PRODUCTS 2.1 SODIUM .1 General: one (1) system will be provided. System to draw HYPOCHLORITE from a storage tank. Liquid metering rates are based on SYSTEM 12% concentration. One (1) liquid metering pump will be
provided to deliver chemical. Pump stroke to be fixed and 100% at all times. Metering output to be based on a 4-20 mA flow paced input signal from the main plant PLC.
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strength.
.3 Metering Pumps: Microprocessor-based programmable solenoid-driven diaphragm chemical metering pump equipped with adjustable suction/discharge stroke duration, automatic leak or breakage detection, with wetted parts suitable for the intended application. Dosing head to be design for automatic degassing of sodium hypochlorite. .1 Each pump capable of delivering a flow rate of 15 liters per hour at 145 psi. Provide one (1) shelf spare pump. .2 Metering pump to include local adjustment and display of pump speed and flowrate from the keypad, analog speed signal output, general alarm/fault output, run status output. LCD display to include diaphragm rupture indication, adjustable suction/discharge stroke duration settings, and internal backpressure measurement. .3 Supply each dosing pump pre-assembled and prewired on HDPE backing panel. Panel to include backpressure valve factory set to 100 psi, calibration column fillable from downstream of backpressure valve, suction tubing with foot valve, pulsation dampener, isolation ball valves, pressure relief valve factory set to 120 psi, 0-150 psi liquid filled pressure gauges with diaphragm isolators upstream and downstream of backpressure valve, check valve, and interconnecting piping as indicated on the drawings. .4 Design pump power to be 120V/single phase/ 60 Hz. Terminate pump power, signal, control, and alarm cabling in a wall-mounted junction box (by supplier) located on or adjacent to pump panel. Connections from the junction box to the pump will be via quick disconnect cables provided by supplier. .5 Acceptable product: Prominent gamma/XL series model GXLa 1020.
.4 Pipe and Valves: Provide piping and valves from bulk storage tank to pump panel and from panel to dosing points as shown on the drawings. All valves must be true union safe-block type. Provide piping as specified under Section 40 20 00.
.5 Storage Tank and Spill Containment: provide one (1) 300 litre closed top bulk storage tanks with 25 mm threaded vent port with plug, four (4) openings complete with sealed gas tight fittings for pump suction tubing and pressure relief discharge, configured to allow suction tubing to hang
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straight into tank, and 300 mm diameter manway and non-vented cover. Storage tank must be suitable for use in potable water applications. Test storage tank and certify prior to delivery to site. Acceptable materials of construction: fibre-reinforced plastic or HDPE. Spill containment to be low profile sized for the storage tank.
.6 Control/functionality: Pump metering rate must be digitally adjustable. Individual pumps to have "local" (keypad) and "remote" (analog) control modes selectable by keypad and LCD screen integral to pumps. When in "local", pump metering rate can be varied locally. When in remote, pump metering rate shall vary from 0-100% based on a 4-20mA flow paced input signal from the local PLC. Each pump must provide an analog feedback signal indicating "current pump speed". Pump also to provide discrete digital feed backs indicating general pump alarm current operating mode (in hand).
.7 Provide two-stage level switch by pump supplier and compatible with pump model to provide low tank level and critical low tank level fault signals from metering pump.
2.2 CHEMICAL .1 Injection lances with variable immersion depth complete INJECTION with isolation curb cock and spring-loaded check valves,
safety chain and PVC solution tube. Materials must be suitable for chemicals in contact. Refer to details on drawings. Injection lances required for chemical injection into pipes.
PART 3 - EXECUTION 3.1 FACTORY TESTING .1 Have pump skid piping, miscellaneous pipe and valving
assemblies’ factory tested prior to shipment. Pressure test all piping at 150 psi for 2.0 hours with no leakage. Fix and repair leaks and repeat testing until the system is successfully tested. Submit test results to the Engineer prior to shipment.
3.2 DELIVERY .1 Ship equipment to the site pre-assembled where possible.
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3.3 INSTALLATION .1 Handle and install equipment in strict accordance with
manufacturer's instructions. Confirm such instructions are issued at time of shop drawing issue and are available on site when required.
.2 Take all necessary field dimensions to ensure accurate and proper fitting of the work and equipment supplied into the building. Make up or break down equipment into sections sized for easy transportation into and through the building to final location without alteration or damage to the building.
.3 Provide openings as required to accommodate shafts, stems, beams, conduit and the like passing through the structure, at no additional cost to the Contract.
.4 Provide temporary supports, hoists, and bracing to prevent overloading of the structure while equipment is being installed. Confirm weights of equipment with the manufacturer.
.5 Provide cast-in-place concrete equipment attachments as required by the equipment and as shown on the Drawings.
.6 Provide correct type and full number, size and length of anchor bolts and other connecting bolts as required by equipment manufacturer. Preset anchor bolts in concrete where convenient; otherwise leave suitable openings in concrete and set anchor bolts later using Red-Head Epoxy anchors or other approved fastening methods.
.7 Coordinate location and provide items for embedding into cast-in-place concrete.
3.4 RESPONSIBILITY OF .1 Obtain written permission from the Engineer to use and test TEMPORARY TRIAL permanent equipment and systems prior to acceptance by USAGE the Owner.
.2 The guarantee period must not be affected by temporary trial use of the equipment.
.3 Clean and renew equipment and systems used before acceptance. Restore to original or new working condition.
.4 Protect equipment and systems openings from dirt, dust and other foreign materials during temporary usage.
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END
3.5 SUPPLY OF CHEMICAL .1 Owner to provide bulk chemical for start-up and trial. FOR START-UP AND TRIAL Provide written notice to the Engineer a minimum of two
(2) weeks prior to start-up to allow adequate time to order and deliver chemicals.
3.6 INSPECTION, TESTING .1 Provide service of competent servicemen, mechanics or & START-UP other trained personnel of the Suppliers or manufacturers to
check the complete installation and be present for start-up of the equipment. Submit a written report signed by the equipment manufacturer's representative to the Engineer stating the following: .1 That a satisfactory installation of equipment has been performed and outlining any modifications that have been made as a result of the commissioning or testing of the equipment at no additional cost to the Contract. .2 That the equipment is now ready for permanent operation. .3 That the operation, lubrication and maintenance instructions for the equipment have been presented to the Consultant. .4 That the equipment has been properly lubricated with the correct lubricants.
.2 Have the equipment manufacturer's representative fully instruct Owner's staff in the proper operation and maintenance of all equipment at no additional cost to the Contract.
.3 Assume a minimum period of two (2) days on site for skilled supervision and instruction and a minimum of two (2) trips to the site by the equipment supplier for each chemical system supplied. Provide as many trips and days on site as required to complete the installation and put the equipment into satisfactory operation.
