Specs 3 of 10.pdf

Improve Potable Water Distribution System Project No. 528A4-16-205 Construction Documents VA Medical Center, Batavia, NY 06-08-2022

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SECTION 22 08 16

DISINFECTION OF POTABLE WATER PIPING

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section describes the Disinfection requirements for the following:

New, repaired or modified systems

1. Potable water distribution piping (on Project site and within buildings)

B. Dechlorination procedures for chlorinated water discharge.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND SAMPLES.

C. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

D. Section 22 11 00, FACILITY WATER DISTRIBUTION.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Water Works Association (AWWA):

C651-2005...............Standard for Disinfecting Water Mains

C. International Code Council (ICC):

IPC-2012................International Plumbing Code

D. NSF International (NSF):

61-2012.................Drinking Water System Components – Health

Effects

372-2011................Drinking Water System Components – Lead Content

1.4 DESCRIPTION

A. Water quality testing: Contractor shall arrange for water quality testing of water samples taken from piping systems for chlorine concentrations and bacteriological quality. COR will approve use of disinfected piping when test results demonstrate compliance with water quality requirements of the Safe Drinking Water Act as described in

Section 1.4.D. Contractor shall furnish disinfection report to COR.

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B. Disinfection Requirements

1. Protect interiors of pipes, fittings, and valves against contamination during construction.

a. All pipe shall be temporarily capped or plugged prior to transporting to construction site to prevent any foreign material from entering pipe.

b. Close openings of piping when pipe-laying or placement is stopped at end of workday or for other reasons, such as rest breaks or meal periods.

2. Do not disinfect any pipe until source of potable water supply used for flushing or disinfection is approved by COR.

3. Contractor shall arrange for water quality testing of water samples taken from piping systems for chlorine concentrations and bacteriological quality as described in Section 1.4.D.

4. Do not place piping in service until notified by COR that water quality test results are approved by COR, as described in Section

1.4.D.

5. Re-flush and retest disinfected potable water piping that has been allowed to stand stagnant for more than 30 days before being placed in service.

6. Disinfect piping within building with service taps and fixtures installed. Flow chlorinated water and flush water through lavatories, sinks, drinking fountains, showers, and hose bibbs.

C. Water Discharge Requirements

1. Neutralize chlorinated water used for disinfection prior to discharge as described in “Dechlorination of Discharges

(Neutralization)” Section 3.4.

2. To discharge chlorinated/dechlorinated water, notify COR and arrange for a total chlorine concentration test as described in Section

1.4.D.

3. Obtain approval from COR prior to ANY discharges.

D. Water Quality Testing Requirements

1. Arrange for a bacterial quality or free or total chlorine concentration test and notify COR at least 48 hours (2 working days) in advance.

2. Requirements for demonstration of compliance with the Maximum Containment Level (MCLs) of the Safe Drinking Water Act:

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a. Total chlorine concentration of less than 1 mg/L (1 ppm).

b. The absence of any coliform bacteria.

c. Less than 200 non-coliform bacteria per 100 mL sample.

PART 2 – PRODUCTS

2.1 MATERIAL SAFETY DATA SHEETS

A. Maintain on-site Material Safety Data Sheets (MSDS) for chemical products, including disinfection and dechlorination products.

2.2 ACCEPTABLE DISINFECTANTS

A. Sodium hypochlorite solution (bleach) contains approximately 5 – 6 percent available chlorine, or 50,000 to 60,000 ppm. Thus, a 1:1000 dilution of bleach in water results in a chlorine concentration of about 50 ppm. Use care in control of conditions and length of storage to minimize its deterioration.

B. Calcium hypochlorite [Ca(OCl)2] granules and tablets per AWWA B300. This contains approximately 65 percent available chlorine by weight. It will not readily dissolve in water with a temperature of less than 41 deg F. Store in a cool, dry, and dark environment to minimize its deterioration. Direct placement of solid phase into piping is not permitted. Do not use calcium hypochlorite intended for swimming pools

(e.g., HTH), as this material has been sequestered and is extremely difficult to eliminate from the pipe.

C. Disinfection with pure chlorine gas or liquid is not permitted.

2.3 ACCEPTABLE DECHLORINATION (NEUTRALIZING) AGENTS

A. Use Vitamin C salt (sodium ascorbate, Vita-D-Chlor brand or equal) for discharges to a live stream [as it doesn’t increase the alkalinity and it reduces the dissolved oxygen less than sodium thiosulfate]. Sodium thiosulfate (technical grade, prismatic rice) is acceptable for discharges elsewhere.

B. Sulfur dioxide gas use is not permitted.

2.4 PRECAUTIONS

A. Calcium hypochlorite is corrosive and is a strong oxidizer. Reducing agents (e.g., sodium ascorbate or thiosulfate), concentrated acids, and organic compounds (e.g. antifreeze, gasoline), can oxidize, burn or explode if they come into contact with solid-phase calcium hypochlorite.

B. Do not use calcium hypochlorite on solvent-welded plastic pipe or on screwed-joint steel pipe because of danger of fire or explosion from reaction with joint compounds (exception: PFTE “Teflon” tape).

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C. Disinfecting solutions containing chlorine shall not exceed 12% active chlorine; greater concentrations can chemically attack and degrade polyethylene.

PART 3 - EXECUTION

3.1 DISINFECTION OF NEW WATER MAINS

A. Preliminary flushing

1. Prior to disinfection, fill main with water to eliminate air pockets.

2. Flush new mains thoroughly before connection is made to system piping in order to remove foreign materials that might have entered the main during the course of the installation or that might have been present in existing piping. The VA COR shall be notified in advance to witness the flushing of the system. After flushing ALL screens on ALL plumbing fixtures, mixing valves, strainers, etc.

shall be cleaned.

3. The minimum rate of flow shall greater than the water demand rate of the system, which is determined by the system design. Where the main supplies a fire supply sprinkler system, flow shall provide an

NFPA 24 velocity of 10 ft/s (3 m/s) even if the demand rate may be less. Flow/velocity table below.

4. Follow AWWA C651, "Disinfecting Water Mains," using Continuous Feed Method where practical.

Exception: For mains supplying fire systems, when the flow rate as listed in table below cannot be verified or met, supply piping shall be flushed at the maximum flow rate available to the system under fire conditions.

Flow Required to Produce a Velocity of 10 Ft per Second (3 m/s) in Pipes (NFPA 24)

Nominal Pipe Size Flow Rate (in.) (gpm) (L/min) 4 390 1476 6 880 3331 8 1560 5905 10 2440 9235 12 3520 13323

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5. For all systems, the flushing operation shall be continued for a sufficient time to ensure thorough cleaning. This shall entail more than one flushing and to be verified by VA COR.

6. Obtain verification from COR that system has been thoroughly cleaned

(flushed) and is ready for chlorination.

B. Chlorination of the Main

1. Inject chlorinated water, with a free chlorine concentration of not less than 25 mg/L, into main at a point no more than 10 feet downstream from beginning of new main. Verify free chlorine concentration of not less than 25 mg/L by an initial free chlorine concentration test as described in Section 1.4.D.

2. Leave chlorinated water in main for at least 24 hours during which time valves and hydrants in system shall be operated to ensure disinfection of the appurtenances.

3. At end of 24-hour period, treated water in all portions of main shall have a free chlorine concentration of not less than 10 mg/L.

Verify this by a residual free chlorine concentration test as described in Section 1.4.D.

4. After residual free chlorine concentration test has been completed, flush system with potable water until total chlorine concentration in main is less than 1 mg/L (1 ppm). The test shall be verified by

VA COR.

5. After final flushing, arrange for final total chlorine concentration and bacteriological quality tests as described in Section 1.4.D.

6. After final total chlorine concentration and bacteriological quality tests have been completed, Contractor shall furnish disinfection report to COR. If water quality tests do not show compliance with water quality requirements of the Safe Drinking Water Act as described in Section 1.4.D, repeat 1, 2, 3, and 4 until test results demonstrate compliance.

3.2 DISINFECTION OF NEW INTERIOR POTABLE WATER SYSTEM

A. Flush until discolored water is eliminated and water flows clear.

B. Chlorination of piping

1. Use chlorinated water, with free chlorine concentration of not less than 25 mg/L. Verify this by an initial free chlorine concentration test as described in Section 1.4.D.

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2. Retain chlorinated water in piping for at least 24 hours, during which time lavatories, sinks, drinking fountains, showers, and hose bibs shall be operated to ensure disinfection of appurtenances.

3. At end of 24-hour period, treated water in all portions of piping shall have a free chlorine concentration of not less than 10 mg/L.

Contractor shall verify this minimum concentration by a residual free chlorine concentration test as described in Section 1.4.D.

4. After residual free chlorine concentration test has been completed, flush system with potable water until total chlorine concentration in piping is less than 1 mg/L (1 ppm), discharging as follows:

a. If total quantity of chlorinated waters is less than 20 gallons, it may be discharged directly to sanitary wastewater collection system without regard to chlorine concentration.

b. If total quantity of chlorinated water for disinfection is over 20 gallons, then:

1) Neutralize and test disinfection water prior to discharge as described in Section 1.3 and “Dechlorination of

Discharges (Neutralization)” Section 3.4 below, and

2) Discharge to environment or sanitary sewer.

3.3 DISINFECTION DURING AND FOLLOWING REPAIR OR MINOR MODIFICATION OF

EXISTING MAINS OR INTERIOR PIPING

A. Before Repair

1. Where practical, isolate a section of affected line and shut off all service connections.

2. Swab or spray the inside of new pipe and fittings with a minimum of

1 percent (10,000 ppm) hypochlorite solution before they are installed. Disinfect tools to be used in same manner.

B. Flushing after Repair

1. Prior to disinfection, flush affected line to clean out contamination introduced during repairs. If possible, flush from both directions. Flush until discolored water is eliminated, and water flows clear. If line segment cannot be isolated, thoroughly flush the segment to a tank or through a fire hydrant. Follow requirements listed for notification and possible dechlorination requirements.

2. Obtain verification that COR has witnessed that the affected line has been thoroughly cleaned (flushed) and is ready for chlorination.

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C. Apply chlorine to water to expose interior surfaces of affected segment at the chlorine concentration and contact times as follows; verify total chlorine concentration by an initial total chlorine concentration test as described in Section 1.4.D:

Chlorine Concentration (mg/L, ppm) Contact Time

300 15 minutes

250 1 hour

200 1.5 hours

150 2 hours

100 3 hours

D. Retain chlorinated water in main, or piping, for above prescribed contact time. At the end of prescribed time period, flush affected line with potable water until total chlorine concentration in main is less than 1 mg/L (1 ppm).

E. After flushing, Contractor shall arrange for final total chlorine concentration and bacteriological quality tests as described in Section

1.4.D.

F. After final total chlorine concentration and bacteriological quality tests have been completed, Contractor shall furnish disinfection report to COR. If water quality tests do not show compliance with water quality requirements of the Safe Drinking Water Act as described in

Section 1.4.D, repeat E, F, and G above until test results demonstrate compliance.

3.4 DECHLORINATION OF DISCHARGES (NEUTRALIZATION)

A. Provide mixing tank to allow dechlorination of water prior to discharge. Stir in neutralizer crystals allowed per Part 2 manually.

B. Approximate dosage rate of neutralizer may be calculated from the following table:

Free Chlorine

Residual Concentration

Sodium

Ascorbate (Vita-D-Chlor)

Sodium Thiosulfate

10 mg/L 2.2 lb/10,000 gal

1.2 lb/10,000 gal

50 mg/L 11 lb/10,000 gal

6 lb/10,000

500 mg/L 110 lb/10,000 gal

60 lb/10,000

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C. Do not dose neutralizing chemical beyond the minimum required to neutralize the chlorine actually present in discharge.

- - - E N D - - -

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SECTION 22 11 00

FACILITY WATER DISTRIBUTION

A. Domestic water systems, including piping, equipment and all necessary accessories as designated in this section.

B. A complete listing of all acronyms and abbreviations are included in

Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 07 84 00, FIRESTOPPING.

D. Section 07 92 00, JOINT SEALANTS.

E. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

F. Section 22 07 11, PLUMBING INSULATION.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Society of Mechanical Engineers (ASME):

A13.1-2007 (R2013)......Scheme for Identification of Piping Systems

B16.3-2011..............Malleable Iron Threaded Fittings: Classes 150 and 300

B16.9-2012..............Factory-Made Wrought Buttwelding Fittings

B16.11-2011.............Forged Fittings, Socket-Welding and Threaded

B16.12-2009 (R2014).....Cast Iron Threaded Drainage Fittings

B16.15-2013 ............Cast Copper Alloy Threaded Fittings: Classes

125 and 250

B16.18-2012.............Cast Copper Alloy Solder Joint Pressure

Fittings

B16.22-2013.............Wrought Copper and Copper Alloy Solder-Joint

Pressure Fittings

B16.24-2011.............Cast Copper Alloy Pipe Flanges and Flanged

Fittings: Classes 150, 300, 600, 900, 1500, and

B16.51-2013.............Copper and Copper Alloy Press-Connect Fittings

ASME Boiler and Pressure Vessel Code -

BPVC Section IX-2015....Welding, Brazing, and Fusing Qualifications

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C. American Society of Sanitary Engineers (ASSE):

1010-2004...............Performance Requirements for Water Hammer

Arresters

D. American Society for Testing and Materials (ASTM):

A47/A47M-1999 (R2014)...Standard Specification for Ferritic Malleable

Iron Castings

A183-2014...............Standard Specification for Carbon Steel Track

Bolts and Nuts

A536-1984 (R2014).......Standard Specification for Ductile Iron

Castings

A733-2013...............Standard Specification for Welded and Seamless

Carbon Steel and Austenitic Stainless Steel

Pipe Nipples

B32-2008 (R2014)........Standard Specification for Solder Metal

B43-2014................Standard Specification for Seamless Red Brass

Pipe, Standard Sizes

B61-2008 (R2013)........Standard Specification for Steam or Valve

Bronze Castings

B62-2009................Standard Specification for Composition Bronze or Ounce Metal Castings

B75/B75M-2011...........Standard Specification for Seamless Copper Tube

B88-2014................Standard Specification for Seamless Copper

Water Tube

B584-2014...............Standard Specification for Copper Alloy Sand

Castings for General Applications

B687-1999 (R2011).......Standard Specification for Brass, Copper, and

Chromium-Plated Pipe Nipples

D1785-2012..............Standard Specification for Poly (Vinyl

Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

D2000-2012..............Standard Classification System for Rubber

Products in Automotive Applications

D2564-2012..............Standard Specification for Solvent Cements for

Poly (Vinyl Chloride) (PVC) Plastic Piping

Systems

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D2855-1996 (R2010)......Standard Practice for Making Solvent-Cemented

Joints with Poly (Vinyl Chloride) (PVC) Pipe and Fittings

E1229-2008..............Standard Specification for Calcium Hypochlorite

F2389-2010..............Standard Specification for Pressure-rated

Polypropylene (PP) Piping Systems

E. American Water Works Association (AWWA):

C110-2012...............Ductile-Iron and Gray-Iron Fittings

C151-2009...............Ductile Iron Pipe, Centrifugally Cast

C153-2011...............Ductile-Iron Compact Fittings

C203-2008...............Coal-Tar Protective Coatings and Linings for

Steel Water Pipelines - Enamel and Tape - Hot

Applied

C213-2007...............Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines

C651-2014...............Disinfecting Water Mains

F. American Welding Society (AWS):

A5.8M/A5.8-2011-AMD1....Specification for Filler Metals for Brazing and

Braze Welding

G. International Code Council (ICC):

IPC-2012................International Plumbing Code

H. Manufacturers Specification Society (MSS):

SP-58-2009..............Pipe Hangers and Supports - Materials, Design, Manufacture, Selection, Application, and

Installation

SP-72-2010a.............Ball Valves with Flanged or Butt-Welding Ends for General Service

SP-110-2010.............Ball Valves Threaded, Socket-Welding, Solder

Joint, Grooved and Flared Ends

I. NSF International (NSF):

14-2015.................Plastics Piping System Components and Related

Materials

61-2014a................Drinking Water System Components – Health

Effects

372-2011................Drinking Water System Components – Lead Content

J. Plumbing and Drainage Institute (PDI):

PDI-WH 201-2010.........Water Hammer Arrestors

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1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION 22 11 00, FACILITY WATER DISTRIBUTION”, with applicable paragraph identification.

C. Contractor shall submit manufacturer’s certificate of compliance with the Buy American Act (BAA) for all products provided under this contract. Any products not in compliance shall be rejected and a compliant product shall be provided at no additional cost to the

Government.

D. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. All items listed in Part 2 - Products.

E. Complete operating and maintenance manuals including wiring diagrams, technical data sheets and information for ordering replacement parts:

1. Include complete list indicating all components of the systems.

2. Include complete diagrams of the internal wiring for each item of equipment.

3. Diagrams shall have their terminals identified to facilitate installation, operation and maintenance.

1.5 QUALITY ASSURANCE

A. A certificate shall be submitted prior to welding of steel piping showing the Welder’s certification. The certificate shall be current and no more than one year old. Welder’s qualifications shall be in accordance with ASME BPVC Section IX.

B. All grooved joint couplings, fittings, valves, and specialties shall be the products of a single manufacturer. Grooving tools shall be by the same manufacturer as the groove components.

C. All pipe, couplings, fittings, and specialties shall bear the identification of the manufacturer and any markings required by the applicable referenced standards.

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1.6 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated to include submittal review comments and any equipment substitutions.

B. Submit operation and maintenance data updated to include submittal review comments, substitutions and construction revisions shall be in electronic version on compact disc or DVD as well as hard copies inserted into a three ring binder. All aspects of system operation and maintenance procedures, including piping isometrics, wiring diagrams of all circuits, a written description of system design, control logic, and sequence of operation shall be included in the operation and maintenance manual. The operations and maintenance manual shall include troubleshooting techniques and procedures for emergency situations.

Notes on all special systems or devices shall be included. A list of recommended spare parts (manufacturer, model number, and quantity) shall be furnished. Information explaining any special knowledge or tools the owner will be required to employ shall be inserted into the

As-Built documentation.

C. The installing contractor shall maintain as-built drawings of each completed phase for verification; and shall provide the complete set at the time of final systems certification testing. As-built drawings are to be provided by the Contractor to the COR and AE. Should the installing contractor engage the testing company to provide as-built or any portion thereof, it shall not be deemed a conflict of interest or breach of the ‘third party testing company’ requirement.

D. Certification documentation shall be provided to COR 10 working days prior to submitting the request for final inspection. The documentation shall include all test results, the names of individuals performing work for the testing agency on this project, detailed procedures followed for all tests, and certificate if applicable that all results of tests were within limits specified. If a certificate is not available, all documentation shall be on the Certifier’s letterhead.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Material or equipment containing a weighted average of greater than

0.25 percent lead are prohibited in any potable water system intended for human consumption; and shall be certified in accordance with NSF 61 or NSF 372. Endpoint devices used to dispense water for drinking shall meet the requirements of NSF 61, Section 9.

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B. Plastic pipe, fittings, and solvent cement shall meet NSF 14 and shall be NSF listed for the service intended.

2.2 ABOVE GROUND (INTERIOR) WATER PIPING

A. Pipe: Copper tube, ASTM B88, Type K or L, drawn.

B. Fittings for Copper Tube:

1. Wrought copper or bronze castings conforming to ASME B16.18 and

B16.22. Unions shall be bronze, MSS SP-72, MSS SP-110, solder or braze joints. Use 95/5 tin and antimony for all soldered joints.

2. Flanged fittings, bronze, class 150, solder-joint ends conforming to

ASME B16.24.

3. Press-connect type fittings shall not be used.

C. Adapters: Provide adapters for joining pipe or tubing with dissimilar end connections.

D. Solder: ASTM B32 alloy type Sb5, HA or HB. Provide non-corrosive flux.

E. Brazing alloy: AWS A5.8M/A5.8, brazing filler metals shall be BCuP series for copper to copper joints and BAg series for copper to steel joints.

2.3 EXPOSED WATER PIPING

A. Finished Room: Use full iron pipe size chrome plated brass piping for exposed water piping connecting fixtures, casework, cabinets, equipment and reagent racks when not concealed by apron including those furnished by the Government or specified in other sections.

1. Pipe: ASTM B43, standard weight.

2. Fittings: ASME B16.15 cast bronze threaded fittings with chrome finish.

3. Nipples: ASTM B687, Chromium-plated.

4. Unions: MSS SP-72, MSS SP-110, brass or bronze with chrome finish.

Unions 65 mm (2-1/2 inches) and larger shall be flange type with approved gaskets.

B. Unfinished Rooms, Mechanical Rooms and Kitchens: Chrome-plated brass piping is not required. Paint piping systems as specified in Section 09

91 00, PAINTING.

2.4 DIELECTRIC FITTINGS

A. Provide dielectric couplings or unions between pipes of dissimilar metals.

2.5 STERILIZATION CHEMICALS

A. Hypochlorite: ASTM E1120.

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B. Liquid Chlorine: ASTM E1229.

PART 3 - EXECUTION

3.1 INSTALLATION

A. General: Comply with the International Plumbing Code and the following:

1. Install branch piping for water from the piping system and connect to all fixtures, valves, cocks, outlets, casework, cabinets and equipment, including those furnished by the Government or specified in other sections.

2. Pipe shall be round and straight. Cutting shall be done with proper tools. Pipe, except for plastic and glass, shall be reamed to remove burrs and a clean smooth finish restored to full pipe inside diameter.

3. All pipe runs shall be laid out to avoid interference with other work/trades.

4. Install union and shut-off valve on pressure piping at connections to equipment.

5. Pipe Hangers, Supports and Accessories:

a. All piping shall be supported per the IPC, H-18-8 Seismic Design

Handbook, MSS SP-58, and SMACNA as required.

b. Shop Painting and Plating: Hangers, supports, rods, inserts and accessories used for pipe supports shall be shop coated with zinc chromate primer paint. Electroplated copper hanger rods, hangers and accessories may be used with copper tubing.

c. Floor, Wall and Ceiling Plates, Supports, Hangers:

1) Solid or split un-plated cast iron.

2) All plates shall be provided with set screws.

3) Pipe Hangers: Height adjustable clevis type.

4) Adjustable Floor Rests and Base Flanges: Steel.

5) Concrete Inserts: "Universal" or continuous slotted type.

6) Hanger Rods: Mild, low carbon steel, fully threaded or

Threaded at each end with two removable nuts at each end for positioning rod and hanger and locking each in place.

7) Pipe Hangers and Riser Clamps: Malleable iron or carbon steel.

Pipe Hangers and riser clamps shall have a copper finish when supporting bare copper pipe or tubing.

8) Rollers: Cast iron.

9) Self-drilling type expansion shields shall be "Phillips" type, with case hardened steel expander plugs.

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10) Hangers and supports utilized with insulated pipe and tubing shall have 180 degree (minimum) metal protection shield centered on and welded to the hanger and support. The shield thickness and length shall be engineered and sized for distribution of loads to preclude crushing of insulation without breaking the vapor barrier. The shield shall be sized for the insulation and have flared edges to protect vapor-retardant jacket facing. To prevent the shield from sliding out of the clevis hanger during pipe movement, center-ribbed shields shall be used.

11) Miscellaneous Materials: As specified, required, directed or as noted on the drawings for proper installation of hangers, supports and accessories. If the vertical distance exceeds 6.1 m (20 feet) for cast iron pipe additional support shall be provided in the center of that span. Provide all necessary auxiliary steel to provide that support.

12) With the installation of each flexible expansion joint, provide piping restraints for the upstream and downstream section of the piping at the flexible expansion joint. Provide calculations supporting the restraint length design and type of selected restraints. Restraint calculations shall be based on the criteria from the manufacturer regarding their restraint design.

6. Install chrome plated cast brass escutcheon with set screw at each wall, floor and ceiling penetration in exposed finished locations and within cabinets and millwork.

7. Penetrations:

a. Firestopping: Where pipes pass through fire partitions, fire walls, smoke partitions, or floors, install a fire stop that provides an effective barrier against the spread of fire, smoke, and gases as specified in Section 07 84 00, FIRESTOPPING.

Completely fill and seal clearances between raceways and openings with the firestopping materials.

b. Waterproofing: At floor penetrations, completely seal clearances around the pipe and make watertight with sealant as specified in

Section 07 92 00, JOINT SEALANTS. Bio-based materials shall be utilized when possible.

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c. Acoustical sealant: Where pipes pass through sound rated walls, seal around the pipe penetration with an acoustical sealant that is compliant with ASTM C919.

B. Domestic Water piping shall conform to the following:

1. Grade all lines to facilitate drainage. Provide drain valves at bottom of risers and all low points in system. Do not create a dead leg where drain valves are provided. Design domestic hot water circulating lines with no traps.

2. Connect branch lines at bottom of main serving fixtures below and pitch down so that main may be drained through fixture. Connect branch lines to top of main serving only fixtures located on floor above.

3. Do not create dead legs by installing any capped tees or closed valve pipe runs intended for use in the future.

4. Do not “bull nose” a tee when splitting water flow between two piping branches.

3.2 TESTS

A. General: Test system either in its entirety or in sections. Submit testing plan to COR 10 working days prior to test date.

B. Potable Water System: Test after installation of piping and domestic water heaters, but before piping is concealed, before covering is applied, and before plumbing fixtures are connected. Fill systems with water and maintain hydrostatic pressure of 1035 kPa (150 psig) gage for two hours. No decrease in pressure is allowed. Provide a pressure gage with a shutoff and bleeder valve at the highest point of the piping being tested. Pressure gauge shall have 1 psig increments.

3.3 DEMONSTRATION AND TRAINING

A. Provide services of manufacturer’s technical representative for four hours to instruct VA Personnel in operation and maintenance of the system.

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SECTION 22 11 19

PLUMBING SPECIALTIES

A. This section describes the requirements for Potable Water Analytics

(PWA) continuous monitoring equipment used to monitor and record water quality and to indicate system performance.

B. A complete listing of all acronyms and abbreviations are included in

Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND SAMPLES.

C. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Society of Mechanical Engineers (ASME):

B40.100-2013............Pressure Gauges and Gauge Attachments

B40.200-2008............Thermometers, Direct Reading and Remote Reading

C. Institute of Electrical and Electronics Engineers (IEEE):

C2–2012.................National Electrical Safety Code (NESC)

D. International Code Council (ICC):

IPC-2012................International Plumbing Code

E. National Fire Protection Association (NFPA):

70–2011.................National Electrical Code (NEC)

F. NSF International (NSF):

61-2012.................Drinking Water System Components – Health

Effects

372-2011................Drinking Water System Components – Lead Content

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and

SAMPLES.

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION 22 05 19, METERS AND GAGES FOR PLUMBING

PIPING”, with applicable paragraph identification.

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C. Contractor shall submit manufacturer’s certificate of compliance with the Buy American Act (BAA) for all products provided under this contract. Any products not in compliance shall be rejected and a compliant product shall be provided at no additional cost to the

Government.

D. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. Water monitoring system and components.

2. Web-based data management system.

E. Operations and Maintenance manual shall include:

1. System Description.

2. Major assembly block diagrams.

3. Troubleshooting and preventive maintenance guidelines.

4. Spare parts information.

F. Shop Drawings shall include the following: One line, wiring and terminal diagrams including terminals identified, protocol or communication modules, and power and Ethernet connections.

1.5 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated to include submittal review comments and any equipment substitutions.

B. Submit copies of complete operation and maintenance data updated to include submittal review comments, substitutions and construction revisions shall be inserted into a three-ring binder per the requirements of Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA AND

SAMPLES. All aspects of system operation and maintenance procedures, including piping isometrics, wiring diagrams of all circuits, a written description of system design, control logic, and sequence of operation shall be included in the operation and maintenance manual. The operations and maintenance manual shall include troubleshooting techniques and procedures for emergency situations. A list of recommended spare parts (manufacturer, model number, and quantity) shall be furnished. Information explaining any special knowledge or tools the owner will be required to employ shall be inserted into the

As-Built documentation.

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PART 2 – PRODUCTS

(Listed products are basis of design products.)

2.1 CONTINUOUS MONITORING AND SUPPLEMENTAL DISINFECTION EQUIPMENT

A. The contractor shall provide the following equipment in accordance with the Specifications:

1. 2 EA Phigenics WME-1525 PWA Base Secondary Disinfection System 2.0

2. 2 EA Phigenics WME-3750 30-Gal Tank + Secondary Containment Package

3. 1 EA Phigenics WME-1075 PWA Base Monitoring System 2.0

4. 27 EA Phigenics WME-2910 Water temperature sensor with 4 - 20mA and thermowell

5. 1 EA Phigenics WME-3802 Water Sample Cooler (Plate &Frame Design) B. The contractor shall provide technical support from manufacturer’s representative during installation and startup of the equipment.

C. The contractor shall provide and install the following Potable Water

Analytics (PWA) equipment and associated equipment and services.

D. Web-based Data Management System E. The equipment provided will be able to use the existing web-based data management system to collect, report, and store data collected.

2.2 PHIGENICS WME-1525 PWA BASE SECONDARY DISINFECTION SYSTEM 2.0

A. Skid mounted system for automatic monitoring of free residual oxidant

(FRO) OR total residual oxidant (TRO)and automatic control of chlorine residuals based on ORP. The ORP sensor must include an integrated feed and control system for automatic addition of supplemental disinfectant.

The system must continuously monitor these sensors and make the data available securely using any Internet connected device. The total system must be pre-wired and pre-plumbed on a rugged single skid to ensure high quality and a simple installation.

B. The chlorine monitor must meet the following minimum requirements:

1. Measure FRO or TRO in potable water systems using the EPA accepted

DPD colorimetric test method for measuring chlorine.

2. Measure chlorine residuals at configurable frequencies as short as 110 seconds.

3. Support water sample temperatures directly of up to 131°F, and up to 150°F using a sample cooler (sample cooler available for additional cost).

4. Support ambient temperatures of up to 104°F .

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5. Comply with US EPA regulation 40 CFR 140.74, Standard Method 4500- CLG, and US EPA Method 334.0 “Determination of Residual Chlorine in

Drinking Water Using an Online Chlorine Analyzer.”

6. Support a Modbus interface.

7. 4-20mA output that is proportional to the Chlorine measurement.

8. 2 Alarm Relays that are configurable to activate based on the Chlorine measurement, C. The ORP feed and control system must meet the following minimum requirements:

1. Support either an on/off or proportional feed and control strategy,

2. Include an NSF/ANSI Standard 61 certified pump with a degasifying head, a maximum output of 0.6GPH, and a turndown ratio of 360:1.

3. NSF/ANSI Standard 61 certified fluorinated ethylene propylene (FEP) tubing used for all pressurized chlorine lines,

4. Include a kynar corporation stop injector which is serviceable for maintenance without disrupting operation of the water line.

5. Include an ORP sensor with the following minimum requirements:

a. Range: ± 1,999 mV

b. Response: 95% in less than 5 seconds

c. Operating Pressure: 100 PSI

d. Temperature Range: 50 - 212°F

6. Electrode life is reduced when used at temperatures above 122°F.

Sample cooler recommended under these conditions.

D. The data logging device must meet the following minimum criteria:

1. Automatically collect and log data at user selected intervals.

2. Log device data date/time stamps and store in non-volatile memory.

3. Store interval data locally until the next scheduled upload.

4. Support a Modbus interface plus eight additional analog or pulse input signals.

5. Capable of transporting data securely to servers owned and operated by the equipment supplier over a cellular, Ethernet Wide Area

Network (WAN), or WiFi connection, as required.

6. Capable of providing secure data access and analysis using any Internet connected device.

7. NEMA 4X rating

E. Install Parameters

1. Dimensions: 44"W X 46"H X 20"D

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2. Weight: 122 lb

3. Must be placed on a flat surface

F. Installation requirements

1. One water tap in supply line and plumbing from tap to PWA for sample point.

2. Floor drain and plumbing from PWA to drain for the water that passes through the sample point.

3. One water tap for the chlorine injection point, installed upstream of the sampling point.

4. NSF 61 certified, double-walled, FEP (fluorinated ethylene propylene) tubing to connect chlorine pump to the injection point.

5. One GFCI, surge-protected, 110V electrical outlet.

2.3 PHIGENICS WME-3750 30-GAL TANK + SECONDARY CONTAINMENT PACKAGE

A. The NSF-approved sodium hypochlorite (“liquid chlorine”) must be fed to the chemical pump correctly to ensure reliable system operation and performance.

B. The tank must have the following characteristics:

1. Appropriate size based upon the water system application, (i.e., 30 gallon container).

2. The tank system must be installed so that the chlorine liquid level is above the chlorine pump to ensure gravity feed. This is a critical requirement to prevent chlorine off-gassing and/or pump priming issues.

3. The tank must be NSF/ANSI Standard 61 certified and compatible with

12.5% sodium hypochlorite.

4. The tank system must be installed with secondary containment to avoid a chlorine chemical spill in the mechanical room space. The secondary containment will collect the chlorine product in the event of a valve or tube malfunction.

C. Installation requirements:

1. Chlorine compatible, NSF 61 certified tubing to connect the tank valve to the inlet of the supplemental disinfection pump.

2.4 PHIGENICS WME-1075 PWA BASE MONITORING SYSTEM 2.0

A. Panel mounted system for automatic monitoring of free or total chlorine residuals. The system must continuously monitor these sensors and make the data available securely using any Internet connected device. The

22 11 19 - 6 total system must be pre-wired and pre-plumbed on a single panel to ensure high quality and a simple installation.

B. The chlorine monitor must meet the following minimum requirements:

1. Measure free residual oxidant (FRO) or total residual oxidant (TRO) in potable water systems using the EPA accepted DPD colorimetric test method for measuring chlorine.

2. Measure chlorine residuals at configurable frequencies as short as

110 seconds.

3. Support water sample temperatures directly of up to 131°F, and up to

150°F using a sample cooler (sample cooler available for additional cost).

4. Support ambient temperatures of up to 104°F

5. Comply with US EPA regulation 40 CFR 140.74, Standard Method 4500- CLG, and US EPA Method 334.0 “Determination of Residual Chlorine in

Drinking Water Using an Online Chlorine Analyzer.”

6. Support a Modbus interface.

7. 4-20mA output that is proportional to the Chlorine measurement.

8. 2 Alarm Relays that are configurable to activate based on the Chlorine measurement.

C. The data logging device must meet the following minimum criteria:

1. Automatically collect and log data at user selected intervals.

2. Log device data date/time stamps and store in non-volatile memory.

3. Store interval data locally until the next scheduled upload.

4. Support a Modbus interface plus eight additional analog or pulse input signals.

5. Capable of transporting data securely to servers owned and operated by the equipment supplier over a cellular, Ethernet Wide Area

Network (WAN), or WiFi connection, as required.

6. Capable of providing secure data access and analysis using any

Internet connected device.

7. NEMA 4X rating D. Install Parameters:

1. Dimensions: 24"W X 51"H X 9"D

2. Panel Unistrut size: 1.5" x 1.5" x 1/8"

3. Weight: 50 lb

4. Must be mounted to a flat surface E. Installation requirements:

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1. One water tap in supply line and plumbing from tap to PWA for sample point

2. Floor drain and plumbing from PWA to drain for the water that passes through the sample point

3. One GFCI, surge-protected, 110V electrical outlet

2.5 PHIGENICS WME-2910 WATER TEMPERATURE SENSOR WITH 4 - 20MA AND THERMOWELL

A. The water temperature sensors must meet the following minimum requirements:

1. Compact temperature sensor with built-in transmitter

2. Signal output: 4 to 20 mA

3. Probe length: 30, 50, 100 or 150-mm

4. Connection: ¼” or ½” NPT male

5. Body must be stainless steel AISI 316L

6. Temperature range: -58 to 302°F

7. Pressure rating: 300 PSI

8. M12 connector with pre-cut cord lengths for hard wiring to PWA system

9. Sensor accuracy class A

10. Installed inside the pipe for pipe diameters ≥ 2”

B. Installation requirements

1. One water tap for thermowell installation in pipe

2. Wiring between temperature sensors and PDX (each sensor requires its own wire directly to the PDX). Multi-Paired Cables 22AWG 1PR

Shielded.

2.6 PHIGENICS WME-3802 WATER SAMPLE COOLER (PLATE & FRAME DESIGN)

A. The water sample cooler will reduce temperatures over 120oF to 120oF or lower to protect the PWA’s sensors from damage at higher temperatures.

It must meet the following minimum requirements:

1. Design: 20 Plate Heat Exchanger

2. Material Type: 304 Stainless Steel, Copper Brazed

3. Sample Water Connection: 1/2" FNTP

4. Cooling Water Connection: 1/2" FNTP

5. Heat Exchanger Area: 0.13 sq. ft.

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PART 3 - EXECUTION

3.1 INSTALLATION

A. Monitoring panel shall be installed on the wall in each mechanical room as shown on the drawings. Coordinate exact location of panel in field/on-site with COR.

B. Monitoring wells shall be installed in piping as required for each panel and criteria monitored:

1. Water service entrance into building.

2. Distal point in piping system.

C. Electrical installations shall conform to IEEE C2, NFPA 70, and to the requirements specified herein. New materials shall be provided.

D. If an installation is unsatisfactory to the COR, the Contractor shall correct the installation at no cost to the Government.

E. Installation Services for Potable Water Analytics Systems

1. All PWA System Installation Requirements

a. General Requirements

1) Surge protection

2) 12-ft power cord with a standard 3-prong plug

3) Single 110V outlet

4) Power consumption is less than 2A

5) Minimum spacing of 1 ft on either side and above the PWA for connections

b. Water System Requirements

1) Requires at least 5 PSI to operate

2) Water temperatures greater than 130°F at 30 PSI MUST have a sample cooler

3) Water pressures greater than 100 PSI at 70°F MUST have a pressure regulator

4) Minimum flow rate to the PWA is 0.25 GPM

c. Sample Line Installation

1) Sample line should be 3/8” Outside Diameter (OD) flexible copper tubing, copper pipe, or CPVC pipe.

2) The shortest run possible is preferred from the sample valve to the PWA to minimize the water sample delay to the system

d. Drain Line Installation

1) There are 2 drain lines, both with ½” NPT female connection

2) Drain line should be copper or PVC, ½” inch size or larger to facilitate water flow to drain

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3) Drain line must be sloped down to drain with an air gap

2. Supplemental Disinfection System Installation

a. Chemical Injection Line Installation

1) Chemical suction and injection lines should use NSF/ANSI

Standard 61 certified fluorinated ethylene propylene (FEP) tubing

2) Injection point must be at least 10 pipe diameters UPSTREAM from the sample point

a) Increased distances between injection and sample allow for more uniform chlorine mixing

b. Chemical Tank Set Up

1) Tank must be bottom fed and have an opening for the pump’s auto-degas line

2) Tank must be NSF/ANSI Standard 61 certified and compatible with 12.5% sodium hypochlorite

3) Flooded suction is required (tank must be elevated above the pump)

4) Standard containment is 40"L X 40"W X 12"H F. Technical Support/Startup of Equipment

1. The contractor will provide technical support from manufacturer’s representative during installation and conduct system startup.

a. Provide input for location of PWA

b. Provide input for location of chlorine injection (if applicable) and water sample tap

c. Provide technical guidance to installer during installation

d. Conduct system startup

e. Verify that all applicable parameters are recording correctly and being transferred to the web-based data management system

3.2 WEB BASED DATA MANAGEMENT SYSTEM

A. The equipment provided will be able to use the existing web-based data management system to collect, report, and store data. This web-based data management system provides the following functions:

1. All information stored in the system is available 24/7 via password protected access.

2. WMP-related reports (including validation testing results, meeting minutes, verification reports, and service provider reports) can be stored and available for immediate access by all users.

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3. Customized charts, reports, views, and data entry screens as requested.

4. Management dashboards with industry benchmarking.

5. Send text or email alerts for data that is outside of set parameters.

6. Data collection via tablets and other hand-held devices.

7. Automated data collection via continuous monitoring equipment

(equipment not included).

8. Validation test results immediately uploaded into your

PhiAnalytics site (if samples are analyzed by Phigenics).

9. Exportable data to excel and other formats.

B. The software platform must meet the following minimum criteria:

1. Software-as-a-Service (SaaS) enterprise-class platform specialized for building water systems.

2. Capable of monitoring all sensor data from the potable water quality monitoring system.

3. Tables and graphs that can be plotted based on user selected time intervals and system parameters.

4. Supports manual data entry via computer and mobile devices, automatic uploading of all water and microbiological test results, documentation of water management plans and activities, and automated sensor monitoring, as specified in VA directive 1061.

5. Administrative functionality to control user access rights, and automated alert notifications.

6. Data storage for a minimum of five years.

7. Exportable data to excel and other formats.

C. The software platform must meet the following Infrastructure

Reliability and Information Security Management requirements:

1. The web application host will provide a service level agreement

(“SLA”) with a service commitment to a monthly uptime percentage of at least 99.95%. Provide Host Documentation.

2. The web application will be hosted at a datacenter compliant with

FedRAMP requirements at the moderate impact level and in accordance with the Federal Cloud Computing Strategy. Provide Host

Documentation.

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3. The database will be securely backed up hourly for disaster recovery purposes and provide a minimum durability of 99.999999999% and uptime of 99.999%. Provide Host Documentation.

4. The web applications will be hosted as a Software-as-a-Service

(SaaS) data delivery model. This will enable easy access to all data in a highly secure environment via the Internet using any internet connected device including personal computers and mobile devices.

5. The web application will employ at a minimum TLS 1.2 with 128-bit AES encryption and authentication.

6. The web application will be delivered by way of a secure login-protected environment with registered HTTPS security provisions.

D. The software platform must meet the following minimum Application-Level

Security requirements:

1. A user account and password of adequate complexity will be required for each individual user who accesses the system. New user accounts may only be created by administrators with the appropriate level of authorization.

2. Administrators shall have the ability to easily remove access from users no longer authorized to use the application.

3. All edits, deletions, or changes to existing data will be logged with the date and time, user committing the change, and all original data will be preserved. This audit trail will be available to users with the appropriate level of access.

4. The web application shall have varying levels of access for data collectors, operators, site managers, water management team members, and administrators.

5. Users can be restricted by region or facility. A user restricted to a specific facility shall only be able to view data and information pertaining to that facility.

E. The software platform must meet the following minimum Data Collection requirements:

1. Administrators will be able to add, edit, or remove sample points in the system as needed.

2. A web page will be available in the application for data collectors to enter test results.

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3. The required testing frequency of each sample point can be configured as daily, weekly, or monthly. Alerts can be issued if required sample is missing.

4. The system will allow…