EC TITLE: EC NO.: 38 PROJECT · 2020. 10. 20. · valves, tapping bosses, associated instruments,...

EC TITLE: Surge Tank ClarificationsPROJECT: 3 Kings Water Treatment Plant

EC NO.: 38DATE: 7/17/2020STATUS: Acknowledged

SECTION 1: BY CONTRACTOR

QUESTION:

The selected surge tank vendor (PULSCO) provided an email on Jun 12, 2020, regarding the height of the surge tanks. Afterdiscussions with the vendor related to tank size and I&C components the changes provided in this clarification will provideconsistency with the surge tanks that were provided at Quinns Junction and clarify the physical size of the tanks.

DRAWING NO.: 060-N-50003 INSTRUMENTATION ANDCONTROL - BACKWASH WASTE POLYMER FEED SYSTEM

POTENTIAL COST IMPACT:

SPECIFICATION SECTION: 33 12 17.01Surge Control System POTENTIAL SCHEDULE IMPACT:

PROPOSED SOLUTION:

See attached markups to specification and tank datasheets.

COMMENTS:

INITIATOR: Menk, Sean/SLC

PRIORITY: NormalREQUESTED RESPONSE DATE: 7/31/2020

SECTION 2: BY REVIEWER

RESPONSE:

COMMENTS:

REVIEWED BY: Sam Conant REVIEWED DATE: 7/29/2020

ENGINEERING CLARIFICATION

VPO® by Simplex Group Printed Date: 8/11/2020

DIGITALLY SIGNED:

02/10/2020

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RASMUSM1Text Box1

jzallaText Box 1 04/27/2020 ENGINEERING CLARIFICATION #16 DT JZ

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smenkPolygon

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smenkText Box400-138-04

smenkSnapshot

smenkPolygon

smenkText Box400-140-04

smenkText Box 2 07/17/2020 ENGINEERING CLARIFICATION #38 DT JZ

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3KINGS WTF PHASE III DESIGN

PW/DEN003/694342 SURGE CONTROL SYSTEM FEBRUARY 10, 2020 33 12 17.01 - 1 ©COPYRIGHT 2020 JACOBS

SECTION 33 12 17.01 SURGE CONTROL SYSTEM

PART 1 GENERAL

1.01 REFERENCES

A. The following is a list of standards which may be referenced in this section:

1. American Society of Mechanical Engineers (ASME): a. B16.5, Pipe Flanges and Flanged Fittings. b. B16.11, Forged Steel Fittings, Socket-Welding and Threaded.

2. National Electrical Manufacturers Association (NEMA): ICS 1, General Standards for Industrial Control and Systems.

3. Steel Structures Painting Council (SSPC): a. SP 6, Commercial Blast Cleaning. b. SP 10, Near-White Blast Cleaning.

1.02 SUBMITTALS

A. Action Submittals: Shop Drawings:

1. Complete dimensional fabrication drawings of surge tank, surge tank control panel, equipment, accessories, supports, connections, outlets, and all related piping.

2. Complete electrical elementary diagrams and electrical interconnection diagrams for bladder integrity monitoring system. Diagrams in accordance with NEMA ICS 1.

B. Informational Submittals:

1. Manufacturer’s Certificate of Compliance, in accordance with Section 01 61 00, Common Product Requirements, that tank is certified and stamped in accordance with ASME Section VIII, Division 1.

2. Seismic anchorage and bracing calculations as required by Section 01 88 15, Anchorage and Bracing.

3. Manufacturer’s Certificate of Proper Installation, in accordance with Section 01 43 33, Manufacturers’ Field Services.

4. Tank manufacturer’s written instructions.


SURGE CONTROL SYSTEM PW/DEN003/694342 33 12 17.01 - 2 FEBRUARY 10, 2020 ©COPYRIGHT 2020 JACOBS

5. Test Reports: a. Date and time of testing. b. Description of method of testing, including pumping

combinations and pressure records. c. Description of observed leaks and method and date of repair. d. Description of catastrophic failures.

6. Operation and Maintenance Manual and Maintenance Summary: Provide an Operation and Maintenance Manual and Maintenance Summary in conformance with the requirements of Bid Package 1 - Section 01 78 23, Operation and Maintenance Data.

1.03 QUALIFICATIONS

A. Statement of Qualification: Tank welders must be ASME certified.

PART 2 PRODUCTS

2.01 SURGE TANK

A. Materials for tank, design, shop fabrication and inspection shall comply with ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, with only the plate steels in Table UCS-23 of said code being used. Provide ASME code stamp, National Board Registration number and pressure rating on tank.

B. Physical Data:

1. Vertical, inverted bladder-type vessel suitable for use with raw water, for Surge Tank TNK-400-138-01.

2. Vertical, inverted bladder-type vessel suitable for use with potable water, for Surge Tank TNK-400-023-02.

3. Vertical, bladder-type vessel suitable for use with potable water. Surge tank bladder and manufacturing facility shall be NFS-61 approved for potable water and listed with NFS.

4. Size of the surge bladder tank shall be based on the hydraulic analysis performed by the tank manufacturer. Minimum volume, diameter and height required as specified in the Tank Data sheets at the end of this section.

5. Minimum design pressure as specified in the Tank Data sheets at the end of this section.

C. Structural Design and Supports shall include the tank, supports, and anchor bolts shall be designed based upon local building codes in addition to the following criteria:



1. Design for hydrostatic operating pressure and test pressure with no reactive load permitted through the inlet/outlet piping as specified in the Tank Data Sheets at the end of this section.

2. Seismic Design Parameters to conform to the current IBC (if necessary and required by design engineer).

D. Attachments:

1. Manways: a. One minimum, design and fabricate in accordance with ASME

Boiler and Pressure Vessel Code, Section VIII, Article D10. b. Minimum Diameter: 16 inches. c. Removable top or end to allow for inspection and maintenance of

the bladder. d. Include davit arm to support manway lid when unbolted from

surge tank. 2. Nozzles:

a. As shown and in accordance with ASME Code, Section VIII, Article D6.

b. As specified in the Tank Data Sheets at the end of this section.

E. Instrumentation:

1. Surge tank vendor shall provide all instruments described within this specification and shall be compatible with surge tanks provided.

2. Instrumentation shall conform to additional requirements specified in 40 90 00 Instrumentation and Control.

F. Lifting Lugs: Provide suitably attached for equipment assemblies and components weighing over 100 pounds.

G. Equipment Identification Plates: An engraved Gravoply laminated identification plate shall be securely mounted on the equipment in a readily visible location. The plate shall bear the 1/4-inch minimum identification number indicated on Drawings..

H. Anchor Bolts: Type 316 stainless steel, sized by equipment manufacturer, 1/2-inch minimum diameter, and as specified in Section 05 50 00, Metal Fabrications. Coat in accordance with Section 09 90 00, Painting and Coating.

2.02 FABRICATION

A. Fabricate tank in accordance with ASME Boiler and Pressure Vessel Code, Section VIII. Stamp and certify tank in accordance with ASME Code Section VIII, Division 1.



B. Construct tank shell of deep drawn carbon steel sub-arc welded domes and side shells with double welded seams. Tank/Vessels shall be fabricated by listed manufacturer, not contracted out.

C. Weld the support legs to the tank. Secure tank by attaching support legs (four minimum) to a concrete floor or slab. Material of construction shall comply with ASTM A 36 or ASTM A 285, Grade C.

D. Bladder tank shall be National Board approved with Liquid Relief Valve set at tank design pressure. Bladders and replacement bladders shall be manufactured in the tank manufacturers’ plant. Bladder shall be sized to conform to the inner shape of the vessel. Bladder tank, fabricated with a food grade, heavy duty butyl rubber bladder, shall be of vertical configuration.

E. Precharge pressure will be located between the shell and the bladder. Provide a 1/2-inch threaded connection at the top of the tank to contain a gas charging valve and pressure gauge.

F. Valves: Tank shall be designed to function properly with the specific valves, including but not limited to plug valves and check valves, submitted by the Contractor. Acceptance of these valves shall be clearly stated in the surge tank submittal.

G. Plate Thicknesses: Determine in accordance with allowable stresses listed in the Code for material, pressure, and temperature specified.

H. Heads: As specified in ASME Code, Section VIII, Division 1.

I. Shell and Head Thicknesses: Include minimum corrosion allowance of 0.125 inch.

J. Painting and Coating: All painting and coating shall be completed at the factory. Field painting and coating will not be accepted.

1. Interior (submerged) Surface Treatment: Tank interior shall be painted with an NSF 61 epoxy paint with a uniform layer thickness of no less than 6 mils. Clean and paint in accordance with Section 09 90 00, Painting and Coating.

2. Exterior Surface Treatment: Tank exterior shall be painted with an anti-corrosion polyurethane and shall have a uniform layer with a minimum thickness of 10 mils. Clean and paint in accordance with Section 09 90 00, Painting and Coating.



2.03 SOURCE QUALITY CONTROL

A. Perform hydrostatic testing in shop. Test pressure shall be 150 percent of the design pressure of the tank for at least 24 hours.

B. Repair leaks found during testing prior to painting.

PART 3 EXECUTION

3.01 INSTALLATION

A. Install tank in accordance with manufacturer’s written instructions.

B. The surge tank manufacturer shall verify the performance of the surge protection equipment provided, by recording surge pressures following a pump trip, furnish an updated and calibrated surge model of the installed conditions and summarize the results in a written document.

C. The surge tank vendor shall provide all equipment needed to record the field data during field testing. The surge tank vendor shall provide all equipment needed to record the field data during a pump trip. The pressure shall be recorded with a pressure transducer capable of recording the surge pressures at a sample rate of 1,000 recordings per second. Transducers and measurement software are not permanently installed and are to be provided by the manufacturer for testing only.

D. Level tank and grout support legs as specified in Section 03 62 00, Grouting, before anchoring.

E. Assemble Accessories: Make process, control, and electrical connections.

F. Make piping connections such that misalignment stresses are not induced in tank nozzles.

3.02 FIELD QUALITY CONTROL

A. Field Hydrostatic Test:

1. Hydrostatically test installed surge control tank for 4 hours minimum at 1.3 times design pressure, before dynamic testing.

2. Repair leaks detected during testing. Retest until no leakage is detected.



B. Test Preparation:

1. Perform test preparation and inspections prior to functional and performance testing.

2. Inspect existing and new piping, branches, connections, nipples, valves, tapping bosses, associated instruments, and all other components for deficiency, damage and inadequate rated pressure.

3. If any component is damaged, rated less than tank design pressure, or not restrained, notify Engineer and do not perform functional test.

C. Functional and Performance Test:

1. Contractor shall submit test schedule a minimum of 4 weeks prior to commencement. Tests shall not commence on weekends or holidays.

2. Inspect and test all components for alignment, connection, operation, and performance.

3. System Supplier shall test level control system for all functions. 4. At least 30 minutes shall be allowed between each pump start to prevent

overheating of the pump motor. 5. Dynamic Test: Perform in response to flow startup and stoppage. 6. Testing with Multiple Pumps: Increase number of pumps, one at a time. 7. Record steady state flow prior to flow stoppage. 8. Record dynamic pressures and surge tank level for each test. 9. System Supplier shall provide suitable test equipment to electronically

log surge tank pressure in 0.5-second increments (maximum) for the duration of each dynamic test. Pressure transducers shall have calibration certificates dated no earlier than 30 days prior to test date, and be accurate to within 0.5 percent.

10. Functional Test Report: a. Contractor shall submit complete written report and electronic

data file of all tests performed within 10 days after test completion. Reports shall include: 1) Date and time of all testing. 2) Description of method of testing including pumping

combinations, pressure records, etc. 3) Description of any failures or repairs. 4) Signature of System Supplier, Contractor, and test

equipment operator. 5) Electronic file on compact disc (CD) media containing

pressure versus time data of all tests. Data file shall be in Microsoft Excel format, or approved equivalent.



3.03 SUPPLEMENTS

A. The supplements listed below, following “End of Section” are a part of this specification.

1. Tank Data Sheets: a. TNK-400-138-01, Thaynes Surge Tank. b. TNK-400-023-02, Boothill Surge Tank. c. TNK 400-023-02 Tank Data Sheet. d. TNK 400-138-01 Tank Data Sheet.

END OF SECTION


PW/DEN003/694342 SURGE CONTROL SYSTEM FEBRUARY 10, 2020 33 12 17.01 SUPPLEMENT 1 - 1 ©COPYRIGHT 2020 JACOBS

HYDROPNEUMATIC TANK DATA SHEET, 01

Tag Number: TNK-400-138-01

Tank Name: Thaynes Surge Tank

Manufacturers and Product: (1) Charlatte America

(2) Pulsco

(3) Wessels Co.

Physical Data:

Type: Pre-charged Bladder

Net Volume: 198 gallons (Minimum)

Configuration: Vertical cylindrical shape with elliptical heads

Diameter: 2.5 feet

Sidewall Length: 4 feet

Design Pressure: Rated for 175 psig (minimum)

Design Temperature: 100 degrees F

Nozzles:

Sizes 2-1/2 Inches and Larger: 150 psi flanged, ASME B16.5

Sizes 2 Inches and Smaller: 150 psi screwed, ASME B16.11

Number and Type:

One 8-inch inlet/outlet nozzle

One 0.5-inch pressure relief nozzle

Two level gauge nozzles

One differential pressure instrument per manufacturer recommended size

One level element per manufacturer recommended size

One pressure sustaining valve per manufacturer recommended size

Pressure Relief (Safety) Valve:

In accordance with Boiler and Pressure Vessel Code, Section VIII, General Requirements, UG-125 and 126.

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smenkText BoxOne pressure gauge for visual indication

smenkText BoxOne pressure transmitter

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smenkText Boxfor level indication,

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smenkText Boxwith local digital display

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SURGE CONTROL SYSTEM PW/DEN003/694342 33 12 17.01 SUPPLEMENT 1 - 2 FEBRUARY 10, 2020 ©COPYRIGHT 2020 JACOBS

Set as recommended by Surge Tank Supplier

Tank Support Legs: Four minimum sized to set inlet/outlet flange approximately 2 feet above base plates

Level Gauges: One


PW/DEN003/694342 SURGE CONTROL SYSTEM FEBRUARY 10, 2020 33 12 17.01 SUPPLEMENT 2 - 1 ©COPYRIGHT 2020 JACOBS

HYDROPNEUMATIC TANK DATA SHEET, 02

Tag Number: TNK-400-023-02

Tank Name: Boothill Surge Tank

Manufacturers and Product: (1) Charlatte America

(2) Pulsco

(3) Wessels Co.

Physical Data:

Type: Pre-charged Bladder

Net Volume: 1,981 gallons (Minimum)

Configuration: Vertical cylindrical shape with elliptical heads

Diameter: 6 feet

Sidewall Length: 7 feet

Design Pressure: Rated for 75 psig (Minimum)

Design Temperature: 100 degrees F

Nozzles:

Sizes 2-1/2 Inches and Larger: 150 psi flanged, ASME B16.5

Sizes 2 Inches and Smaller: 150 psi screwed, ASME B16.11

Number and Type:

One 14-inch inlet/outlet nozzle

One 0.5-inch pressure relief nozzle



One differential pressure instrument per manufacturer recommended size

One level element per manufacturer recommended size

One pressure sustaining valve per manufacturer recommended size

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smenkText BoxOne pressure transmitter

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SURGE CONTROL SYSTEM PW/DEN003/694342 33 12 17.01 SUPPLEMENT 2 - 2 FEBRUARY 10, 2020 ©COPYRIGHT 2020 JACOBS

Pressure Relief (Safety) Valve:

In accordance with Boiler and Pressure Vessel Code, Section VIII, General Requirements, UG-125 and 126

Set as recommended by Surge Tank Supplier

Tank Support Legs: Four minimum sized to set inlet/outlet flange approximately 3 feet above base plates

Level Gauges: One

I

TANK DATA SHEET

APPLICABLE TO: □ PROPOSAL □ PURCHASE □ RECORD

Information not specified to be supplied by vender as applicable

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Item No. · TNK-400-138-01

· 3KINGS WTP

THAYNES SURGE TANK

GENERAL INFORMATION

Service · SURGE TANK Workina Caoacitv · 198 GAL/MIN Thickness Design Code · ASTM/ASME Roof · ELLIPTICAL Material · CARBON STEEL Shell · VERTICAL CYLINDER

Bottom · ELLIPTICALCOATING EXTERNAL INTERNAL

Surface Prep · SEE SPEC 09 90 00 · SEE SPEC 09 90 00 Primer · SEE SPEC 09 90 00 · SEE SPEC 09 90 00 Finish Coat · SEE SPEC 09 90 00 · SEE SPEC 09 90 00 Insulation Thk Material Claddina

NOZZLE SCHEDULE

MK Size/Tvoe Service Proiection Radial CL N1 . 8" · INLET/OUTLET · CENTERN2 · 16" · MANWAY · CENTERN3 · 0.5" NTP · GAS CHARGE VALVE WITH GAUGE · CENTERN4 · 2" FLG · DRAIN WITH BALL VAVLE . 270° NS · NOTE 5 · DIFF, PRESSURE INSTRUMENT . goo N6 · NOTE 5 · LEVEL ELEMENT . 45° N7 · NOTE 4 · LEVEL GAUGE NOZZLE · 90°(SIDE)NS N9 N10

ACCESSORIES Level Indicator X Handrails On Lid Ladder □ Int □ Ext Ory Scrubber Unit Stairs Walkway Platform Clips □Anchor Lugs X Syphon Drain Sump Vortex Breaker Inlet Baffle Lifting Lugs X Thief Hatch Access Manway NOTE 2 X Down Comer □ Int □ ExtHeat Trace Insulate

NOTES ---

1. PROVIDE TANK LEGS PER DIMENSION SHOWN.

2. ACCESS MANWAY SHALL HAVE A DAVIT ARM TO SUPPORT MANWAYAFTER REMOVAL.

3. VALVE PROJECTION AS RECOMMENDED BY SURGE TANK SUPPLIER.

4. LEVEL GAUGE NOZZLE SIZE PER MANUFACTURER RECOMMENDATION.

5. PRESSURE AND LEVEL INSTRUMENT SIZING PER MANUFACTURER RECOMMENDATION.

33 12 17.01 SUPPLEMENT 3 - 1

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Item No. · TNK-400-023-02

· 3KINGS WTP

BOOTHILL SURGE TANK

GENERAL INFORMATION

Service · SURGE TANK Workina Caoacitv · 1,981 GAL (MIN) Thickness Design Code · ASTM / ASME Roof · ELLIPTICAL Material · CARBON STEEL Shell · VERTICAL CYLINDER

Bottom · ELLIPTICAL

COATING EXTERNAL INTERNAL

Surface Prep · SEE SPEC 09 90 00 · SEE SPEC 09 90 00 Primer · SEE SPEC 09 90 00 · SEE SPEC 09 90 00 Finish Coat · SEE SPEC 09 90 00 · SEE SPEC 09 90 00 Insulation Thk Material Claddina

NOZZLE SCHEDULE

MK Size/Tvoe Service Proiection Radial CL N1 · 14" FLG · INLET/OUTLET ·CENTER N2 · 16" FLG · MANWAY & DAVIT, NOTE 2 ·CENTERN3 · 0.5" NPT · GAS CHARGE VALVE WITH GAUGE ·CENTERN4 · 2" FLG · DRAIN WITH BALL VALVE · CENTER N5 NOTE 5 DIFF, PRESSURE INSTRUMENT goo N6 · NOTE 5 · LEVEL ELEMENT . 45°

N7 · NOTE 4 · LEVEL GAUGE NOZZLE · SIDENB N9

ACCESSORIES

Level Indicator Handrails On Lid Ladder □ Int □ Ext Ory Scrubber Unit Stairs Walkway Platform Clips □Anchor Lugs X Syphon Drain Sump Vortex Breaker Inlet Baffle Lifting Lugs X Thief Hatch Access Manway NOTE2 X Down Comer □ Int □ ExtHeat Trace Insulate

NOTES ---1. PROVIDE TANK LEGS PER DIMENSION SHOWN.

2. ACCESS MANWAY SHALL HAVE A DAVIT ARM TO SUPPORT MANWAYAFTER REMOVAL.

3. VALVE PROJECTION AS RECOMMENDED BY SURGE TANK SUPPLIER.

4. LEVEL GAUGE NOZZLE SIZE PER MANUFACTURER RECOMMENDATION.

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33 12 17.01 SUPPLEMENT 4 - 1

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