**November 21, 1997**

Contract \# **TW-0928**

SPECIAL SPECIFICATION

SECTION 15401-S

[PLUMBING]{.underline}

Page

[PART 1 - GENERAL]{.underline}

1.01 Description Of Work 2

1.02 Quality Assurance 2

1.03 References 2

1.04 Submittals 5

PART 2 - PRODUCTS

2.01 Acceptable Manufacturers 6

2.02 Plumbing Materials 6

2.03 Valves 8

2.04 Strainers, Flanges And Unions 9

2.05 Cleanouts 10

2.06 Plumbing Fixtures 10

2.07 Drains 12

2.08 Floor Receptor 12

2.09 Equipment 12

PART 3 - EXECUTION

3.01 Plumbing Installation 16

3.02 Soil, Waste, And Vent Piping Installation 22

3.03 PVC Piping Installation 23

3.04 Fixture And Equipment Installation 23

3.05 Tests 24

3.06 Disinfection 25

3.07 Commissioning 264

SPECIAL SPECIFICATION

SECTION 15401-S

[PLUMBING]{.underline}

## [PART 1 - GENERAL]{.underline}

## 1.01 [DESCRIPTION OF WORK]{.underline}

A. [This specification]{.underline}, in conjunction with the design
drawings and other contract documents, specifies materials and
operations required for the installation of interior plumbing systems.
Systems covered by this document are: hot water (HW), cold water (CW),
emergency water (EW), non-potable water (NPW), sanitary drainage (S),
sanitary vent (V), pumped sanitary drainage (PS), storm drainage (SS),
pumped storm drainage (PSS), rain water leaders (RWL), firewater
drainage (FWD), and equipment drainage (D).. Operations include the
specification of piping, fittings, valves, joints, fixtures, equipment,
tests, and disinfection.

## 1.02 [QUALITY ASSURANCE]{.underline}

A. [Welding Materials and Procedures]{.underline}: Shall conform to ASME
code for Pressure Piping, ANSI/ASME B31.1, Power Piping.

B. [Employ welders certified]{.underline} in accordance with ASME Boiler
and Pressure Vessel Code, as modified by ANSI/ASME B31.1, Power Piping.

C. [Brazing]{.underline}: Certify brazing procedures, brazers, and
operators in accordance with ANSI/ASME B31.1, Power Piping, for shop and
jobsite brazing of piping work.

D. [Soldering]{.underline}: Conform to ANSI/ASME B31.1, Power Piping.

## 1.03 [REFERENCES]{.underline}

[The current editions]{.underline} of the following standards are to be
considered a part of this specification. They are listed in the order of
governance.

A. Sandia National Laboratories Standard Specifications

> 01300-S Submittals
>
> 02200-S Earthwork
>
> 09900-S Painting
>
> 15050**-S** General Materials and Work Requirements-Mechanical
>
> 15200**-S** Vibration Limits and Control
>
> 15250**-S** Insulation-Mechanical Systems B. American National
> Standards Institute (ANSI)
>
> B1.1 Unified Inch Screw Threads
>
> B1.2 Gages and Gaging for Unified Inch Screw Threads
>
> B2.1 Standard Welding Procedures
>
> B16.1 Cast Iron Pipe, Flanges and Flanged Fittings
>
> B16.3 Malleable Iron Threaded Fittings Classes 150 and 300
>
> B16.4 Cast Iron Threaded fittings Classes 125 and 250
>
> B16.5 Pipe Flanges and Flanged Fittings
>
> B16.9 Factory-made Wrought Steel Butt welding Fittings
>
> B16.10 Face to Face and End to End Dimensions of Valves
>
> B16.11 Forged Steel Fittings, Socket Welding and Threaded
>
> B16.12 Cast Iron Threaded Drainage Fittings
>
> B16.22 Wrought Copper and Copper Alloy Solder Joint Pressure Fittings
>
> B16.23 Cast Copper Alloy Solder Joint Drainage Fittings
>
> B16.24 Bronze Pipe, Flanges and Flanged Fittings (Class 150 and 300)
>
> B16.29 Wrought Copper and Wrought Copper Alloy Solder Joint Drainage
> Fittings
>
> B16.34 Valves - Flanged, Threaded and Welding End
>
> B31.1 Power Piping
>
> Z358.1 Emergency Shower and Eyewash Equipment

C. American Society for Testing and Materials (ASTM)

> A53 Standard Specification for Steel, Black and Hot Dipped, Zinc
> Coated, Welded and Seamless
>
> A74 Standard Specification for Cast Iron Soil Pipe and Fittings
>
> A307 Standard Specification for Steel Bolts and Studs, 60,000 psi
> Tensile Strength
>
> A518 Standard Specification for Corrosion Resistant High Silicon Iron
> Castings
>
> B88 Standard Specification for Copper Water Tube
>
> D1785 Standard Specification for Poly Vinyl Chloride (PVC) Plastic
> Pipe, Schedules 40, 80 & 120
>
> D2447 Standard Specification for Polyethylene (PE) Plastic Pipe,
> Schedule 40 and 80
>
> D2466 Standard Specification for Poly Vinyl Chloride Socket-Type
> Plastic Pipe Fittings (Schedule 40)
>
> D2464 Poly Vinyl Chloride (PVC) Threaded Plastic Pipe Fittings,
> Schedule 80
>
> D2665 Poly Vinyl Chloride (PVC) Plastic Drain, Waste, and Vent Pipe
> and Fittings
>
> D2467 Standard Specification for Poly Vinyl Chloride Socket Type
> Plastic Pipe and Fittings, Schedule 80
>
> D2774 Standard Recommended Practice for Installation of Thermoplastic
> Pressure Piping
>
> D2837 Standard Test Method for Obtaining Hydrostatic Design Basis for
> Thermoplastic Pipe Materials
>
> D3222 Standard Specification for Unmodified PVDF Molding Extrusion and
> Coating Materials
>
> D4101 Standard Specification for Propylene Plastic Injection and
> Extrusion Materials

D. American Society of Mechanical Engineers (ASME) Boiler and Pressure
Vessel Codes

E. American Waterworks Association (AWWA): C651 Disinfecting Water Mains

F. American Welding Society (AWS): A5.8 Specification for Brazing Filler
Metal

G. Federal Specification (FS) Published by the Federal Specification
Board: WW-P-401 Cast Soil Pipe and Fittings for Hubless Cast Iron
Sanitary Systems

H. Cast Iron Soil Pipe Institute (CISPI)

> 301 Cast Soil Pipe and Fittings for Hubless Cast Iron Sanitary Systems

I. Underwriters Laboratories, Inc. (UL)

J. International Plumbing Plumbing Code (1995) in conjunction with
Building Officials and Code Administrators International (BOCA),
International Conference of Building Officials (ICBO), and Southern
Building Code Congress International (SBCCI).

K. National Fire Protection Association (NFPA) Code 70

L. National Electric Codes (NEC)

> Article 110-16
>
> Article 250-80
>
> Article 384-4

M. American Gas Association (AGA)

> Z21.8 Installation of Domestic Gas Conversion Burners
>
> Z1.10.1 Gas Water Heaters Volume III Storage, with Input Ratings Above
> 75,00 0BTU Per Hour, Circulating and Instantaneous Water Heaters
>
> Z21.71 Automatic Intermittent Pilot Ignition Systems for Field
> Installation

## 1.04 [SUBMITTALS]{.underline}

A. Where specific manufacturer or model numbers are mentioned in these
specifications, [proposed substitutions]{.underline} shall be performed
per requirements of section 1600-S.

B. [Submittals]{.underline} shall be as per Standard Specification,
Section 01300-S.

C. Pipe materials, valves, equipment, and accessories not listed in this
specification under **[PART - 2 - PRODUCTS]{.underline}** shall be
submitted for approval.

D. [Relief valves]{.underline} require submittals for approval.

E. [Backflow preventers]{.underline} require submittals for approval.

# PART 2 - PRODUCTS

## 2.01 [ACCEPTABLE MANUFACTURERS]{.underline}

The firms listed in Section 2.02, Plumbing Materials, meet the
[function, quality, and performance requirements]{.underline}.

## 2.02 [PLUMBING MATERIALS]{.underline}

A. Potable Piping:

1\. Plumbing for potable systems shall be [lead-free]{.underline} per
Public Law 99-339, Safe Water Act.

2\. [Lead-free]{.underline} is defined as no more than 0.2 percent lead
in solder and solder flux, and no more than 8 percent lead in pipe and
fittings.

B. [Hot and Cold Water,]{.underline} [Hot Water
Circulating,]{.underline} [Non-Potable Water, and Pressure Drain
Piping]{.underline}:

1\. [Above Grade]{.underline}: Piping shall be Schedule 40, galvanized
steel pipe, ASTM A53, Grade A or B, with 150 pound galvanized malleable
iron screwed fittings conforming to ANSI B16.3 or Type L hard drawn
copper tubing, ASTM B88, with wrought copper solder type fittings
conforming to ANSI B16.22. Screwed joints in piping are restricted to
pipe sizes 2\" and smaller.

2\. [Below Grade]{.underline}: Type K copper tubing shall be used.
Fittings shall be flared solder type of brass, bronze or wrought copper.
For corrosion protection of pipes passing through concrete see Section
306.1 in the International Plumbing Code. Hot water & hot water
circulating piping embedded in 1st floor slab to be of the pre-insulated
type with fiber glass jacket with 1 1/2" polyurethane insulation as mfg.
By Perma-Pipe or approved substitute.

C. [Soil, Waste, and Gravity Drain Piping]{.underline}:

1\. [Below Grade]{.underline}: Piping shall be service weight hub and
spigot (with gasket) coated cast iron and shall conform to ASTM A74.
Cast iron soil pipe, fittings and connections shall comply CISPI
guidelines.

2\. [Above Grade]{.underline}: Drain, waste, and vent piping and
fittings shall be PVC piping in compliance with ASTM D2665. Pressure
rated piping material shall comply with ASTM D1785, Schedule 40. Use
socket fittings with solvent cemented joints complying with ASTM D2466
and ASTM 2467. Threaded PVC pipe shall be Schedule 80 minimum wall
thickness and fittings shall comply with ASTM 2464.

D Laboratory Waste And Vent Piping: For acid and caustic resistant
drains. 1. [From lab waste to sewage ejector]{.underline}
[:]{.underline} 2. [Above grade:]{.underline} Pipe and fittings shall be
schedule 40 PVC. 3. Below grade: Pipe and fittings shall be DURIRON
conforming to ASTM A518. E. [Roof Drain Leaders]{.underline}:

1\. [Below Grade]{.underline}: Leaders shall be service weight hub and
spigot coated cast iron and shall conform to ASTM A74.

2\. [Above Grade]{.underline}: Service weight hub-spigot coated cast
iron pipe and fittings conforming to ASTM A74; or hubless cast iron pipe
and fittings conforming to Federal Specification WW-P-401.

F. [PVC Piping]{.underline}: Where PVC piping is specified on the
drawings, the following materials and procedures shall be used. PVC pipe
shall only be used where specified on the drawings.

1\. [Drain, Waste, and Vent Piping]{.underline}: Drain, waste, and vent
piping and fittings shall be in compliance with ASTM D2665.

2\. [Pressure Rated Piping]{.underline}: Pressure rated piping material
shall comply with ASTM D1785, Schedule 40. Use socket fittings with
solvent cemented joints complying with ASTM D2466 and ASTM 2467.
Threaded PVC pipe shall be Schedule 80 minimum wall thickness and
fittings shall comply with ASTM 2464.

G. [Equipment Drains And Indirect Waste]{.underline}: Piping shall be
Schedule 40 galvanized steel pipe, ASTM A53, with galvanized cast iron
screwed drainage fittings conforming to ANSI B16.12 or DWV copper pipe
with DWV wrought copper fittings in compliance with ANSI B16.29.

## 2.03 [VALVES]{.underline}

A. NO SOLDERED VALVES PERMITTED.

> VALVES MUST BE CERTIFIED ASBESTOS FREE.

B. [Gate]{.underline}: Class 125

1\. [Screwed]{.underline}: Bronze, bronze trim, rising stem inside
thread union bonnet. Crane No. 430 UB.

2\. [Flanged]{.underline}: OS&Y iron body, bronze trim, rising stem,
Crane No. 465-1/2.

C. [Ball]{.underline}: 125 psi SWP, 400 psi W.O.G.

1\. [Screwed]{.underline}: 2 piece bronze body, blow-out proof captive
stainless steel stem, teflon seals and seats, full ported 316 stainless
steel ball. Nibco T-585-66.

2\. [Flanged]{.underline}: Class 150, iron body, blow-proof captive
stainless steel stem and ball, double teflon seals and seats. Worcester
Series 51.

D. [Globe]{.underline}: Class 125

1\. [Screwed]{.underline}: Bronze, inside screw, union bonnet,
regrinding beveled disc; Jenkins Fig. 750.

2\. [Flanged]{.underline}: Iron, OS&Y, bronze trim, bronze disc,
backseated, Crane No. 143.

E. [Butterfly]{.underline}: Class 200

1\. [Flanged]{.underline}: Sizes 2\" to 36\"; full bolt pattern, iron
body, aluminum/bronze disc, stainless steel shaft, Buna N seals, lug
type for dead end service, gear operator for greater than 4 inch size
and lever operator for 4 inches and smaller. Norris Model R3010-43-2K.

2\. [Threaded]{.underline}: Sizes 1 1/2\" to 2 1/2\"; High tensile
strength cast iron body ,ASTM A126 Class B Cadmium plated, with aluminum
bronze disc, 416 SS shaft, and Hycar O-ring. Norris Model M0110-431-A.

3\. Wafer: Not permitted.

F. [Check, Swing]{.underline}:

1\. [Screwed]{.underline}: Class 125, bronze, Y pattern, screw cap.
Crane No. 37.

2\. [Flanged]{.underline}: Class 150, steel, renewable seats, flanged
cap. Powell 1561A.

G. [Check, Vertical]{.underline} [& Upstream of Backflow
Preventer]{.underline}:

> [Screwed]{.underline}: Class 125, bronze, spring actuated, inline lift
> type, TFE seat ring. Nibco T-480-Y.

H. [Trap Primer Valve]{.underline}:

> [Screwed]{.underline}: Brass 1/2-inch male NPT inlet, 1/2-inch female
> NPT outlet. Precision Plumbing Model PR-500.

I. [Trap Primer Distribution Unit]{.underline}:

> [Screwed]{.underline}: With two, three, or four 1/2-inch-diameter NPT
> female fittings, Precision Plumbing series DU.

J. [Interior Hose Bib]{.underline}:

> [Sweat]{.underline}: 1/2-inch I.D. copper with 3/4-inch male hose
> thread outlet. Zurn, Wilkins Regulator Div., Model 12-190C.

## 2.04 [STRAINERS, FLANGES AND UNIONS]{.underline}

A. [Strainers]{.underline}:

1\. [Screwed]{.underline}: Iron, screwed bronze cap, 20 mesh monel
screen for water service. Crane No. 988-1/2.

2\. [Screwed]{.underline}: Bronze, screwed bronze cap, 20 mesh stainless
steel screen for water service. Spirax/Sarco Type BT.

3\. [Flanged]{.underline}: Iron, bolted iron cap, 20 mesh monel screen
for water service. Crane No. 989-1/2.

B. [Flanges]{.underline}:

1\. [1-1/2 Inches and Smaller]{.underline}: Class 150, forged steel,
screwed, ANSI B16.5.

2\. [2 Inches and Larger]{.underline}: Class 150, forged steel welding
neck, ANSI B16.5.

3\. [Copper Systems]{.underline}: Class 150, Cast Copper, ANSI B16.23.

C. [Unions]{.underline}:

> [Piping unions]{.underline} shall be of the ground joint type
> constructed from materials equivalent in alloy composition and
> strength to other fittings prescribed with which they are used. Union
> pressure classes and end connections shall be the same as the fittings
> used in the lines with the unions.

1\. [Steel unions]{.underline} shall have hardened stainless steel
seating surfaces on both faces.

2\. [Dielectric unions]{.underline} shall be used to join two dissimilar
materials (ferrous and non-ferrous metallic.)

## 2.05 [CLEANOUTS]{.underline}

[Cleanouts]{.underline} shall have an iron body with heavy brass plugs,
except on acid resistant cleanouts.

A. [Floor Cleanout]{.underline}: Shall be Zurn Z-1400 (Normal Traffic)

Shall be Zurn Z- 1400 (Heavy Traffic)

B. [Wall Cleanouts]{.underline}: Shall be Zurn Z-1440 or 1445.

C. [Acid Resistant Cleanouts]{.underline}: Cleanouts for acid resistant
waste lines shall be of the same material as the connecting waste pipes
or approved equal. 2.06 [PLUMBING FIXTURES]{.underline}

[Ordinary plumbing fixtures]{.underline} are specified here. Refer to
the contract drawings for laboratory and special equipment. Fixtures
shall be white and furnished with all trim and accessories required for
a complete installation. Fixtures shall be provided with stop valves on
both hot and cold water supplies. Metal trimmings on fixtures and
exposed piping to fixtures, unless otherwise noted, shall be chromium
plated with chromium plated escutcheons. Toilets, urinals, and
lavatories shall be mounted on Sandia Delegated Representative (SDR)
approved carriers or as indicated on the drawings. All plumbing fixtures
shall meet the requirements of the DOE Energy Conservation Manual
approved for use at the Albuquerque Site.

A. [Toilets]{.underline}

1\. [Wall hung, Flush Valve Type]{.underline}: American Standard
\"Afwall\", No. 2477.024, water saver, top spud, siphon jet closet,
elongated bowl with Sloan Royal 110-3 flush valve, Olsonite #95 white
open-front seat.

B. [Urinal]{.underline}:

> American Standard \"Washbrook\", No. 6501.010, white, wall-hung with
> Sloan Royal186-1 1.0 gpm flush valve and approved wall hanger.

C. [Lavatories & Faucets]{.underline}:

1\. Kohler \"Farmington\", No. K2900, in-counter mount with wire rim,
white enameled cast iron oval bowl, 4 in. faucet centers.

2\. Kohler \"Hudson\", No. K2861, wall-mount, white enameled cast iron
bowl, 4 in. faucet centers.

3\. [Faucet]{.underline}: Bradley, No. 90-75, 4 inch centers, barrier
free, metering.

D. [Service Sink]{.underline}:

1\. Kohler, No. K-6710, Floor-mounted, white enameled cast iron, with
wire rim guard, chrome faucet with lever handles, vacuum breaker, rubber
hose and wall hook, with No. K9146 perforated strainer.

E. [Wall Hydrant]{.underline}:

> Zurn No. Z-1300, , encased, anti-siphon, automatic draining,
> freeze-proof, 3/4-inch hose connection, with vacuum breaker, polished
> brass with fixed key.

F. [Drinking Fountains, Electric]{.underline}:

> New drinking fountains shall be [barrier-free]{.underline}. Haws Model
> No. HWBF8-2RF . Single Fountain height, heavy gauge stainless steel
> construction with No. 4 satin finish, provided with 3 wire grounding
> type cord and plug, UL listed.

G. [Emergency Shower and Eyewash]{.underline}:

1\. [Inside]{.underline}: emergency showers and eyewash stations are to
be barrier-free. Bradley, Model No. S19-310BF, stainless steel bowl and
Face Spray Ring. Provisions for vertical or horizontal supply. Shower
valve to be 1\" IPS stay-open ball valve. Eyewash valve to be 1/2" IPS
stay open hand operated ball valve. Units shall meet ANSI Z358.1.

H. [Eyewash]{.underline}:

1\. [Inside]{.underline}: Eyewash Station. Bradley Model S19-210,
chrome-plated brass yoke assembly with soft-flow, eyewash heads and
protective sprayhead covers. Provide 1-1/4-inch galvanized steel pipe
with floor flange and 1-1/4-inch galvanized waste tee, painted safety
yellow. Provide 14-inch by 3-1/2-inch wall sign which reads "EMERGENCY
EYE WASH FOUNTAIN."

I. [Cabinet Mounted Sink for Sink Bench:]{.underline}

> 1\. Elkay Model LR-1918 with single faucet hole. 18 gauge. Type 302
> (18-8 nickel bearing stainless steel with 1-3/4 inch radius covered
> corners. Single lever post mounted faucet with 3/8 inch O.D. copper
> take inlets Model LK-4160. 3-1/2 inch outlet, stainless strainer with
> neoprene stopper, 1-1/2 inch O.D. brass tailpiece and P-trap.

J. [Shower Fixture]{.underline}:

1\. Cambridge Brass Mod. 11T5163 pressure balance mixing valve, scald
guard, 2.5 GPM.

## 2.07 [DRAINS]{.underline}

A. [Floor]{.underline}: No-hub, trap primer connection as indicated on
the Drawings, connection size as indicated on the Drawings, Zurn Series
Z550-P-AR, 9-inch grate.

B. [Roof]{.underline}:

1\. Drain: No-hub, adjustable extension assembly, cast iron body, gravel
guard, roof sump receiver, under deck clamp, minimum 4 1/2 inch dome,
size as indicated on the Drawings, Zurn Model Z-100.

2\. Drain Overflow: No-hub, adjustable extension assembly, cast iron
body, gravel guard, roof sump receiver, under deck clamp, minimum 4 1/2
inch dome, 2-inch internal water dam, size as indicated on the Drawings,
Zurn Model Z-100.

C. [Areaway Floor]{.underline}: No-Hub, Zurn Model ZC-100.

## 2.08 [FLOOR RECEPTOR]{.underline}

A. Zurn Model 1900-P, 12 inches by 12 inches, 6-inch sump, no-hub, trap
primer connection as indicated on the Drawings, 3/4 grate,
acid-resistant epoxy coating, connection size as indicated on the
Drawings.

## 2.09 [EQUIPMENT]{.underline}

Equipment required for installation on this contract shall be as
specified and as shown on the applicable contract drawings and shall be
furnished complete with accessories normally supplied with the catalog
item listed and other accessories necessary for a complete and
satisfactory operating system.

A. [Water Heaters]{.underline}:

1\. See Section 15462.

B. [Hot Water Storage Tanks]{.underline}:

1\. Tanks shall be constructed, certified and stamped to meet ASME
Boiler and Pressure Vessel Code. Tanks shall be glass lined, and
provided with a thermometer and thermometer well installed at the points
where the water enters and leaves the tank.

2\. Tanks 80 gallons and larger shall have a 12\" x 16\" manhole.

3\. Tanks, regardless of size, shall be provided with an ASME
combination temperature and pressure relief valve with test lever.

4\. Two copies of the manufacturer\'s Data Sheets shall be submitted to
the SDR for approval and record keeping.

C. Temperature and Pressure Relief Valves:

1\. All temperature and pressure relief valves shall be in compliance
with UPC.

2\. Relief valves shall be factory set; ASME listed, certified, and
stamped.

3\. Relief valves shall be sized to relieve the unregulated capacity of
the Pressure Regulating Valve (PRV), burner, or heating element.

D. Backflow Preventer:

1\. Reduce Pressure Principle

a\. Unit shall be of the reduced pressure type with two independently
operating check valves and shall be designed for installation in a
horizontal position. An independent relief valve shall be located
between the two check valves.

> b\. The backflow preventer shall include an integral sensing system
> that will automatically open the relief valve whenever the
> differential pressure between the inlet supply and the reduced
> pressure zone drops to at least 2 psi. The relief valve shall remain
> open until a positive differential of 2 psi is re-established. The
> sensing passage shall be located within the unit housing to protect
> against damage.
>
> c\. Construction of the unit shall also be such that any minor leakage
> at the second check valve will result in a visible flow from the
> relief valve even if the first check valve is totally disabled.

d\. The backflow preventer shall meet the International Plumbing Code
and AWWA requirements.

> e\. Designed for 175 psi maximum working pressure, 350 psi hydrostatic
> test pressure, and 110° F.

f\. Size shall be as indicated on the Drawings.

g\. Provide an air gap drain funnel and route funnel drain line to
nearest floor drain.

h\. Design Basis: CLA-VAL Model RP-4 or approved substitute.

#  2. Double Check Assembly 

a\. Unit shall be a double check valve assembly consisting of two
independently acting spring-loaded toggle lever check valves, two
shut-off valves and four test cocks. b. The check valve design shall
provide drip tight closure against reverse flow, low pressure drop at
maximum flow capacity.

#  c. The assembly shall be designed and manufactured to meet or exceed intermediate degrees of hazard and constructed totally of corrosion resisting materials.

# d. The backflow preventer shall met the International Plumbing Code and AWWA requirements.

# e. Designed for 175 psi maximum working pressure, 350 psi hydrostatic test pressure, and 100°F. 

# f. Size shall be as indicated on the Drawings.

# g. Provide an air gap drain funnel and route funnel drain line to nearest floor drain.

# h. Design Basis: CLA-VAL Model D-4 or approved substitute.

E.  **Circuit Setter**

> 1\. **Circuit Setter Valve**
>
> **a.** **Valve shall be a calibrated balance valve, ball type triple
> purpose for** **use as a presettable balance valve, variable orifice
> flow meter, and** **positive shut-off service valve.**
>
> **b.** **Valve shall be furnished with a calibrated nameplate and
> memory** **stop indicator which permits the valve to be preset to a
> fixed open** **position and then closed for service without disturbing
> valve setting.**
>
> **e.** **Construction shall be bronze body/brass ball with glass and
> carbon** **filled TFE seat rings.**
>
> **d.** **Valves to have differential pressure read-out ports across
> valve seat** **area. Read-out ports to be fitted with internal EPT
> inserts and check** **valves. Valve body to have NPT tapped
> drain/purge port.**
>
> **e.** **All valves to be provided with preformed insulation to permit
> access** **for balance and read-out.**
>
> **f. NPT connections shall be rated for 300 psig @ 250°F; Sweat**
> **connections shall be rated for 200 psig @ 250°F.**
>
> **g. Design Basis: ITT Bell & Gossett Circuit Setter Plus.**

#  **2. Read Out Kit**

> **a. Provide one (1) portable readout meter with provision for
> hanging, capable of indicating pressure differential across a system
> component. Unit to be complete with all necessary hoses, shut-off and
> vent valves, and carrying case.**
>
> **b. Reading range to be 0-25 feet of water.**
>
> **c. Design Basis: ITT Bell & Gossett Model \# RO-5**

#  

# PART 3 - EXECUTION

## 3.01 [PLUMBING INSTALLATION\`]{.underline}

A. Contamination Prevention:

1\. Pipe interiors shall be kept free of debris.

2\. Interior surfaces of potable water pipes, valves and fittings shall
be protected against contamination, as well as debris. All openings in
pipelines shall be closed with watertight plugs when work is halted on
the system. Sealing and packing materials shall not support the growth
of bacteria. Trenches that become wet shall be treated with calcium
hypochlorite granules to prevent bacterial growth.

B. [General]{.underline}:

1\. Plumbing accommodations in government facilities shall conform to 28
CFR Part 36, [Nondiscrimination on the Basis of Disability by Public
Accommodations in Commercial Facilities]{.underline}.

2\. Plumbing installation shall be coordinated with respect to space
available for heating, ventilating, and electrical installation. In case
of conflict in the routing of the piping and the ducting, the routing of
the ducting shall govern. Installed piping shall not interfere with the
operation or accessibility of doors or windows; shall not encroach on
aisles, passageways, and equipment; and shall not interfere with the
servicing or maintenance of equipment. Pipe shall be cut accurately to
measurements established at the construction site and shall be worked
into place without springing or forcing, properly clearing all openings
and equipment. Pipe shall not be bent. Cutting or weakening of
structural members to facilitate piping installation is not permitted.

3\. Plumbing installation shall maintain the working spaces around
electrical equipment as required by NEC articles 110-116, 250-80 and
384-4, and SNL Electrical Safety Bulletin Vol. 1,2,3 and 4. Replacement
of existing metal water piping shall not occur without first
ascertaining how the electrical ground system is configured.

4\. Pipes shall have burrs removed by reaming and shall be so installed
as to permit free expansion and contraction without damage to joints or
hangers. Piping above ground shall be run parallel with the lines of the
building unless otherwise noted on the drawings. Unless otherwise shown
on the drawings, horizontal piping shall pitch down in the direction of
flow with grade of not less than 1\" in 40 feet. Piping connections to
equipment shall be in accordance with details shown on the drawings.
Service pipe, valves, and fittings shall be kept a sufficient distance
from other work to permit finished covering not less than 1/2\" from
such other work, and not less than 1/2\" between finished covering on
the different services.

C. [Reducers]{.underline}: Reduction in pipe sizes shall be made with
one-piece reducing fittings. Forged bushings reducing at least two pipe
sizes will be ACCEPTABLE ONLY when there is no room for manufactured
reducing couplings or swaged nipples. Cast bushings ARE NOT acceptable.

D. [Unions]{.underline}: Unions shall be installed at all equipment,
instruments, and down stream of valves.

E. [Installation of Valves]{.underline}: DO NOT SOLDER VALVES IN PLACE.
Valves shall be installed at the locations shown on the drawings and
where specified. Gate valves shall be used unless otherwise shown,
specified, or directed by the Sandia Delegated Representative (SDR). All
valves shall be installed with their stems between the horizontal the 90
degree vertical. Where tight shutoff is required, a composition seat
globe valve or resilient seat ball valve shall be used. Provide access
to all concealed valves by means of access doors furnished and installed
by the Contractor.

F. [Hangers and Supports]{.underline}:

1\. Piping, unless otherwise directed by governing documents or the SDR,
shall be rigidly supported from the building structure by means of
adjustable ring-type hangers. (WELDING TO BUILDING STRUCTURE IS NOT
ALLOWED AS SH.) Where pipes run side by side, support on rod and angle
iron or Unistrut trapeze hangers. The smallest pipe supported by a
trapeze hanger shall govern the hanger spacing. Hanger spacing shall be
as follows:

**[Steel Piping]{.underline} [Maximum Spacing]{.underline}**

3/8\" and under 4\'-0\"

1/2\" through 1\" 7\'-0\"

1-1/4\" through 4\" 10\'-0\"

5\" through 8\" 16\'-0\"

10\" and larger 20\'-0\"

**[Copper Piping]{.underline} [Maximum Spacing]{.underline}**

3/8\" and under 4\'-0\"

1/2\" through 3/4\" 6\'-0\"

1\" through 1-1/2\" 8\'-0\"

2\" and larger 10\'-0\"

**[Plastic Piping]{.underline} [Maximum Spacing]{.underline}**

All sizes 4\'-0\"

**[Cast Iron Piping]{.underline} [Maximum Spacing]{.underline}**

5\' lengths 5\'-0\"

10\' lengths 10\'-0\"

Hubless At every joint

2\. Round rods supporting the pipe hangers shall be of the following
dimensions:

3/8\" to 2\" pipe 3/8\" rod

2-1/2\" to 3\" pipe 1/2\" rod

4\" to 5\" pipe 5/8\" rod

6\" pipe 3/4\" rod

8\" through 12\" 7/8\" rod

14\" through 16\" 1\" rod

3\. Rods for trapeze hangers shall be a minimum of 3/8\" and shall have
the equivalent cross section listed above per pipe supported. The use of
pipe hooks, chains, perforated iron strapping or wire for pipe supports
WILL NOT be permitted.

4\. Hanger rods shall be galvanized carbon steel per ASTM A307, Grade B,
threaded per ANSI B1.1 coarse thread series, Class 2A fit. Hanger rods
shall have minimum 6\" threaded ends. Double nut all hangers or use a
safety tab.

5\. Place a hanger within 1\'-0\" on both sides of each horizontal
elbow.

6\. Hanger rods shall be installed vertically. No offset in hanger rods
will be permitted.

7\. Use hangers which are vertically adjustable 1-1/2\" minimum after
piping is erected.

8\. Use copper straps on copper pipe and ferrous hangers on ferrous
pipe.

9\. Soft copper tubing, where permitted, shall be fastened to the
building structure with Unistrut-type copper pipe clamps and spaced not
more than 4\'-0\" apart.

10\. Fasten vertical pipes to rigid structural members at each floor or
at 10\'-0\" maximum spacing, unless otherwise directed.

11\. On 4\" and larger piping, install hangers adjacent to (within
1\'-0\" on each side) all strainers, check valves, valves, and all
flanged items.

12\. \"C\" clamp style hanger shall only be installed with retaining
clip.

13\. Insulated pipes shall be protected using galvanized steel shield
similar to Grinnel Figure 167 or 360o galvanized steel shield by Pipe
Shields Inc. or an SDR approved equal.

14\. Seismic pipe restraints are required as specified in Section 15201.

G. [Joints]{.underline}:

1\. [Cast iron pipe joints]{.underline} shall be made in accordance with
the International Plumbing Code.

a\. Caulked joints for bell and spigot water pipe shall be made with
non-toxic materials in accordance with the International Plumbing Code.

b\. Compression joints for bell and spigot pipe shall have flexible,
compression factory-fabricated joints composed of a neoprene gasketing
system in accordance with the International Plumbing Code.

c\. Hubless joints shall conform to standard specification 301 of the
Cast Iron Soil Pipe Institute, and Federal Specification WW-P-401 in
above ground systems.

2\. [Flanged Joints]{.underline}: All flanged joints shall be face
matched. Raised face flanges shall not be mated to flat-faced cast-iron
flanges on valves or equipment. The raised face must be machined flush.
All flange bolt holes shall straddle the horizontal and vertical
centerlines unless otherwise noted. Bolting shall comply with ANSI/ASME
B31.1, Power Piping.

a\. Install insulating kits on flanges connecting dissimilar metals
(such as steel to copper) to prevent electrolytic action.

b\. The following procedure shall be followed when making final assembly
of a bolted flange joint.

1\. Place the gasket on the gasket seating surface and bring the cover
flange in contact with the gasket. Do not glue the gasket in place.

2\. Install all bolts, making sure they are free of dirt and grit, and
are well lubricated.

3\. Run-up all nuts finger tight.

4\. Develop the required bolt stress in a minimum of four steps: (1)
stress the bolts to about 30% of their required stresses, tightening one
bolt after another in a clockwise motion, (2) stress to about 60%,
tightening each bolt one after the other in a clockwise manner, (3)
tighten to about 90%, and (4) perform final tightening, again in a
clockwise manner.

3\. [Screwed Joints]{.underline}: Screwed pipe joints shall have
American Standard Taper Pipe Threads, ANSI B1.2. Burrs formed when
cutting pipe shall be removed by reaming. Care shall be taken that the
inside of pipe is thoroughly clean and free of cutting oil and foreign
matter before installation. The joints shall be made perfectly tight by
the use of Teflon tape or approved Teflon thread sealing and lubricating
compound.

4\. [Brazed/Soldered Joints]{.underline}:

a\. Cut tube ends square. Ream, remove burrs, and size.

b\. All joints in piping systems with pressure above 100 psig or service
temperature above 200 °F shall be brazed.

c\. Brazed copper to copper joints shall be made with a silver brazing
alloy conforming to AWS A5.8, BCuP-5 (15% silver). Joints shall comply
with ANSI/ASME B31.1 Power Piping.

d\. Brazed copper to brass, or copper to stainless steel joints shall be
made with a silver brazing alloy conforming to AWS A5.8, BAg-7 (45%
silver). Joints shall comply with ANSI/ASME B31.1 Power Piping.

e\. All solder joints, for copper tubing, shall be made with 95-5
tin-antimony solder with the following exception:

> Solder containing antimony SHALL NOT be used to join metals containing
> zinc (e.g., galvanized iron, galvanized steel, and brass).

f\. Use sand cloth or a steel wire brush to clean surfaces to be joined.
Steel wool IS NOT permitted.

H. [Cross-Connection Control]{.underline}:

1\. A backflow prevention assembly (BFP) shall be installed to prevent
cross-connection contamination between potable water systems and
non-potable or potentially polluted, or contaminated systems, such as a
drainage systems, soil lines, fire protection lines or chemical lines.

2\. All potable water fixture outlets with hose attachments, such as
hose bibbs, yard hydrants, janitor sinks and lab sinks, shall be
protected by an approved (SDR or IAMPO) vacuum breaker device.

3\. Backflow prevention (BFP) assemblies shall be approved by the
Foundation for Cross Connection Control and Hydraulic Research,
University of Southern California (USC-FCCCHR) and IAPMO.

4\. Backflow prevention assemblies used or installed under this contract
shall be tested by a \"Certified Backflow Control Assembly Tester\" who
possesses a current (within three (3) years from date of issuance)
certificate that confirms successful completion of an approved (SDR
specified or USC-FCCCHR or Colorado Environmental Training Center,
Golden, Colorado) training course.

5\. The Contractor shall perform an operational test on any new or
relocated backflow prevention assemblies used or installed under this
contract. Passing backflow preventers shall be labeled with a tag
indicating: test performed, tester\'s initials and date. Testing
documentation shall be submitted to the Sandia Delegated Representative
(SDR).Ref. Section 01700 " Commissioning " .

6\. Repairs to BFPs shall be made with original manufacturer\'s parts.

7\. Piping downstream of BFPs shall be labeled non-potable or NPW in
accordance with SNL Specification 15050.

I. [Drains]{.underline}:

1\. Drains indicated on the drawings in connection with water
distribution systems shall be 1/2\" bronze valves (gate) with bronze
caps or plugs, unless otherwise noted.

2\. Additional drains shall be installed at low points on the hot water
and cold water piping to ensure proper draining of the system, and all
piping shall pitch to the drains. Hose bibbs (3/4\"), with integral
vacuum breaker, shall be provided as drain valves at low points.

J. [Equipment Connections]{.underline}:

1\. All piping connections to pumps and other equipment shall be
installed without strain at the pipe connection of the equipment.

2\. The Contractor shall be required as directed by the Sandia Delegated
Representative (SDR), to remove the bolts in flanged connections or
disconnect piping to demonstrate that the piping has been so connected.

3\. Pipe connections to equipment shall be made with unions, flex
connectors, flanged fittings or grooved couplings.

4\. Eccentric reducers are required at pumps and other equipment for air
removal.

5\. Install water heaters per AGA Z21.8, Z21.10.1 and Z21.71.

K. [Air Chambers (Shock Absorbers)]{.underline}: Sizes and locations of
shock absorbers shall be as indicated on the drawings and shall be
installed in an easily accessible location.

L. [Dielectric unions]{.underline} shall be used to connect dissimilar
metals (such as steel to copper) to prevent electrolytic action.

M. [Insulation]{.underline} of all pipes, valves, fittings, and
equipment shall be in accordance with Standard Specification, Section
15250, unless noted otherwise on the drawings.

N. [Identification and Labels]{.underline}: All plumbing systems shall
be labeled and identified in accordance with Standard Specification,
Section 15050.

O. [Chlorine Injection Port]{.underline}: A 3-way ball valve or an SDR
approved cleanout port shall be installed on the new line directly off
of the existing main to aide in the sterilization tests of new water
lines.

P. [Relief valves]{.underline}:

1\. Discharge from relief valves located inside buildings shall be piped
full size and extended to the outside of the building. Potable water
lines shall either be turned down towards the ground and terminated
between 6\" and 2 feet above the ground, or be piped to a drain.
Potentially contaminated lines must be directed via pipelines to a
closed drain. Piping shall be sloped 1/8\" per foot.

2\. No valves of any type shall be placed between the relief valve and
the equipment to be protected.

Q. [Escutcheons]{.underline} shall be provided at wall, ceiling and
floor penetrations of piping in occupied areas.

R.  [Access doors]{.underline} shall be provided where maintenance
    access is required (at shut-off valves, BFPs, trap primer valves
    etc.)

S.  [Installation of Fixtures:]{.underline}

T.  Fixtures shall be installed in accordance with the International
    Plumbing Code and Federal Register Vol. 56, No. 144, Para. 4.15,
    4.16, 4.17, 4.18, and 4.19.

U.  The height of fixtures above finished floor shall be as follows:

V.  Water Closet: 15 to 16 inches of top of earthenware.

W.  Water closet for Physically Handicapped Persons: 17 to 19 inches to
    top of seating surface.

X.  Urinal: 24 inches to top surface of lowest part of lip at front.

Y.  Urinal for Wheelchair: 15 to 17 inches to top surface of lowest part
    of lip at front.

Z.  **Lavatory: 31 inches to top of trim.**

A.  **Water Fountain: 40 inches to the nozzle.**

B.  **Water Fountain for Wheelchair: 36 inches to the nozzle.**

## 3.02 [SOIL, WASTE, AND VENT PIPING INSTALLATION]{.underline}

A. [General]{.underline}: Soil, waste, and vent piping systems shall be
complete as indicated on the drawings with connections to all equipment
requiring waste connections. Horizontal drain and waste pipes shall be
given a grade of 1/4\" per foot where possible, but in no case less than
1/8\" per foot. Horizontal vent pipes shall be pitched up to the vent
stacks without forming traps in pipes. Every dry vent connecting to a
horizontal drain shall connect above the centerline of the horizontal
drain line. Vertical vent pipes may be connected into one main vent
riser not less than 18\" above vented fixtures. Where an end or circuit
vent pipe from any fixture or line of fixtures is connected to a vent
line serving other fixtures, the connection shall be 4\'-0\" minimum
above the floor on which the fixtures are located, to prevent the use of
any vent line as a waste. All excavation and backfill shall be in
accordance with Standard Specification, Section 02200.

B. [Fittings]{.underline}: All changes in pipe size on waste and drain
lines shall be made with reducing fittings. All changes in direction
require a cleanout and shall be made by the appropriate use of wyes,
half wyes, and long sweep bends, except that sanitary tees may be used
on vertical stacks, and short quarter bends or elbows may be used in
waste lines where the change in direction of flow is from the horizontal
to the vertical. Where it becomes necessary because of space conditions
to use short radius fittings in any other locations, an approval SHALL
BE obtained before they are installed.

C. [Cleanouts]{.underline}: Cleanouts shall be of the same size as the
pipe, except that cleanout plugs larger than 4\" WILL NOT be required.
Cleanouts installed in connection with cast iron soil pipe shall consist
of a long sweep quarter bend or one or two eighth bends extended to an
easily accessible location, or as indicated on the drawings. Where
cleanouts in connection with threaded pipe are shown and are accessible,
they shall be cast iron drainage T-pattern, 90 degree branch fittings
with square head brass screw plugs of the same size as the pipe, up to
and including 4\".

D. [Vent Pipes]{.underline}: Vent pipes less than 2\" in size shall be
increased to 2\" before extending through roof to prevent frost closure.
Vent pipes 2\" and larger shall extend through roof full size. Vents
shall extend at least 6 inches above the roof and 6 inches from any
vertical surface. Each vent shall terminate not less than 10 feet from
or at least 3 feet above any window, door, opening, air intake, or vent
shaft. Vent pipes shall be flashed and made water-tight at the roof in
accordance with the architectural standards.

E. [Prohibited Fittings And Connections]{.underline}: No lead flashing,
running threads, bands or saddles shall be used in the drainage system.
No drainage or vent piping shall be drilled, tapped, welded, or brazed.
Heel or side-inlet quarter bends shall not be used when the inlet is
placed in a horizontal position as a vent. Any fitting or connection
that offers abnormal obstruction to flow through a drain is prohibited.
No long screws or bushings shall be used.

## 3.03 [PVC PIPING INSTALLATION]{.underline}

## Where PVC is prescribed, install per ASTM D2774. The following shall be used when installing PVC pipe.

## A. [Joints, Threaded Connections:]{.underline} Threading of PVC pipe is permitted on Schedule 80 or heavier.

## B. [Supports]{.underline}: Support at end of branches and at changes of direction or elevation. Follow manufacturer's recommendations for clamping procedures, to control thermal expansion.

## [Exposed Piping]{.underline}. PVC piping, with the exception of vents, shall not be exposed to UV radiation (sunlight), per UPC 315.3. Exposed vents shall be protected by a water based synthetic paint.  {#exposed-piping.-pvc-piping-with-the-exception-of-vents-shall-not-be-exposed-to-uv-radiation-sunlight-per-upc-315.3.-exposed-vents-shall-be-protected-by-a-water-based-synthetic-paint. .unnumbered}

## 3.04 [FIXTURE AND EQUIPMENT INSTALLATION]{.underline}

A. [General]{.underline}: All fixtures and equipment shall be installed
complete with all accessories and trim required for proper installation.

B. [Temporary Strainers]{.underline}: or \"start-up\" socks shall be
installed at each new strainer and at each pump inlet, and allowed to
remain in place for the first 24 hours of equipment operation.

C. [Fixtures]{.underline}: Fixtures shall be firmly bolted to wall,
floors, or carriers in accordance with the manufacturer\'s roughing-in
and setting requirements and drawings. Proper provision for hanging and
setting fixtures and accessories shall be made by the Contractor during
building construction. Where \"rough-in only\" is specified, rough-in
shall include stop valves on all service lines and waste line shall be
capped, ready for installation of trap by others. All fixtures shall be
installed square with the wall, in line, and level to provide a
workmanlike and uniform appearance.

D. [Equipment]{.underline}: Equipment shall be installed in accordance
with the manufacturer\'s directions and shall be supported and fastened
in a satisfactory manner. Piping connections to the equipment shall be
made with union or flanged connections for easy removal and shall be
installed without strain at the pipe connection to the equipment. The
Contractor may be directed to disconnect the unions or remove the
flanges to demonstrate unstrained alignment.

E. [Traps]{.underline}: Each fixture and piece of equipment connecting
to the sanitary drainage system shall be equipped with a trap. Each trap
shall be placed as near to the fixture as possible and no fixture shall
be double-trapped.

F. Each outlet on the nonpotable water line which may be used for
drinking or domestic purposes shall be posted: "DANGER - UNSAFE WATER."
G. Route drain line from the reduced pressure backflow preventers to a
local floor drain.

## 3.05 [TESTS]{.underline}

A. [General]{.underline}: All plumbing, piping, equipment, and fixtures
installed under this contract shall be inspected and tested before
insulation is installed, by the Contractor in the presence of the Sandia
Delegated Representative (SDR), and approved before acceptance. All
labor, material, and equipment required for testing shall be furnished
by the Contractor. The Contractor shall be responsible for all repairs
and retesting as required. All instruments and other equipment whose
safe pressure range is below that of the test pressure shall be removed
from the line or blanked off before applying the tests. Prior to
performing hydrostatic tests, (see below), all lines shall be \"blown\"
free of all loose dirt and foreign particles. The lines shall then be
thoroughly flushed with water at a sufficient flow rate and period to
ensure complete cleaning of the lines of all dirt, scale, and foreign
matter. Satisfactory cleaning and flushing of the lines shall be the
responsibility of the contractor..Ref. Section 01700 " Commissioning " .

B. [Water System]{.underline}: Upon completion of the roughing-in and
before setting fixtures, the entire hot and cold water piping systems
installed under this contract shall be hydrostatically tested at a
pressure of not less than 125 psig for 2 hours and proved tight at this
pressure. Where a portion of the water piping system is to be concealed
before completion, this portion shall be hydrostatically tested
separately in the same manner as prescribed for the entire system.

C. [Sanitary System]{.underline}: The sanitary soil, waste and vent
piping installed under this contract shall be tested by plugging all
outlets and filling the lines with water to the level of the highest
vent stack above the roof. The system shall hold this water for one hour
without showing a drop greater than 3\". Where only a segment of the
system is to be tested, the test shall be conducted in the same manner
as prescribed for the entire system, except that a vertical stack 10
feet (or height as recommended by the **International Plumbing Code**)
above the highest horizontal line to be tested may be installed and
filled with water to maintain sufficient pressure, or a pump may be used
to supply the required pressure. Suitable fittings, such as plugged
tees, shall be installed by the Contractor if needed to isolate portions
of the system for testing purposes. The pressure shall be maintained for
one hour. All joints shall be inspected for visible leaks. All soil or
waste piping located underground shall be tested before backfilling.

D. [Final Plumbing Fixture Test]{.underline}: Upon installation of the
plumbing fixtures, appurtenances or appliances having water and/or waste
connections, and prior to the general use thereof, all water and waste
connections shall have been proved tight, without defects or leaks by
such operating tests as directed by the SDR.

## 3.06 [DISINFECTION]{.underline}

Piping installed under this contract shall be disinfected per AWWA C651
before it is placed in operation. Follow one of two methods from AWWA
C651, section 5.2.

A. [Continuous Feed Method]{.underline}:

1\. Place calcium hypochlorite in pipe sections when installing pipe or
inject liquid chlorine into the system via the injection port. Pipe is
filled with water and chlorine concentration shall remain at 10 mg/l for
a minimum of 24 hours. During this time, all valves in new section will
be cycled open and closed to allow for adequate disinfection. Valves
connecting the new or repaired line with mains in active service shall
remain closed to prevent chlorine pollution.

2\. Samples shall be drawn at 1, 4, 8, 12, 16, 20, and 24 hour marks to
determine the chlorine concentration. Acceptable tests are the DPD drop
dilution method (AWWA C651, Appendix A) or the High Range Test Kit. The
tests shall be done by the contractor or other SDR designee and
witnessed by the SDR. The results shall be recorded for auditing
purposes.

B. [Slug Method]{.underline}:

1\. Similar to the continuous feed method. Follow AWWA C651 section 5.3.
Chlorine concentration to be 100 mg/l for a minimum of 3 hours. During
this time, all valves shall be cycled open and closed to allow for
adequate disinfection. Valves connecting new or repaired lines with
mains in active service shall remain closed to prevent chlorine
pollution.

2\. Samples shall be drawn every 15 minutes to determine concentration.
Acceptable tests are the DPD drop dilution method or the High Range Test
Kit. The tests shall be conducted by the contractor or SDR designee and
witnessed by the SDR. The results shall be recorded for auditing
purposes.

C. [Repairing or Cutting into Existing Mains]{.underline}:

1\. New interior piping surfaces shall be swabbed with a 1% hypochlorite
solution. The section being modified shall be subjected to a high
chlorine disinfection process per AWWA C651, section 9. The
concentration shall be a minimum of 300 mg/l for 15 minutes.

2\. Samples shall be drawn before the chlorine is injected and every 5
minutes thereafter. Chlorine concentration shall be tested by the
contractor or SDR designee using the High Range Test Kit. SDR shall
witness the test and results shall be recorded.

D. [Flushing]{.underline}:

1\. After the lines have been chlorinated using one of the above
methods, it becomes necessary to flush the lines with water until test
sample indicates that the water is suitable for drinking. The residual
chlorine concentration in the water is to be between 0.2 and 2.0 mg/l,
as measured using a Low Range Test Kit. The test shall be witnessed by
SDR or other SDR designee and the results recorded.

2\. Heavily contaminated water shall be disposed of or neutralized under
the direction of SNL Pollution Prevention and Environmental Monitoring
Department, 7725.

E. [Bacteriological Testing]{.underline}:

1\. All new and modified water lines require testing for coliform
organisms per AWWA C651, sections 7 and 9.5. The testing shall occur
after successful chlorination and flushing of the lines. Samples shall
be taken from the new line in sodium thiosulfate treated sterile bottles
and analyzed as specified by [Standard Methods for the Examination of
Water and Wastewater]{.underline}. Analysis, at the discretion of the
SDR representative shall be performed by SNL Industrial Hygiene or an
independent laboratory.

2\. Results shall be recorded with the original documentation of results
attached. These will be used for auditing purposes.

3\. Water lines **WILL NOT** be accepted until a negative
bacteriological test is performed. Lines will be chlorinated and flushed
repeatedly, at no additional cost to SNL, until such a negative test is
accomplished.

F. In order to [minimize water service downtime]{.underline};
distribution lines that have been wholly or partially dewatered,
hydrostatically tested, treated with chlorine, and sampled for bacteria,
may be returned to service prior to the results of the bacteriological
testing.

## 3.07 [COMMISSIONING]{.underline}

A. Provide labor, material, equipment, etc., required to facilitate the
commissioning process. Perform tests and verification procedures
required by the commissioning process when requested by SNL's
Commissioning Authority and directed by the General Contractor's Test
Engineer.

END OF SECTION