15310 290-2-3 fire protection piping

May, 2014 Royal Oman Police General HospitalBP2 - Document II 3 (Mechanical Works) Muscat - OmanIssued for Tender 290/2011

01 International W.L.L Fire Protection Piping15310-1

SECTION - 15310

FIRE PROTECTION PIPING

PART 1 - GENERAL

1.01 WORK INCLUDED

A. Pipe and Pipe Fittings.

B. Valves.

C. Sprinkler System Piping.

D. Wet Hydrant System Piping.

E. Hose Reel System Piping.

1.02 RELATED WORK

A. Painting.

B. Supports and Hangers.

C. Mechanical Identification.

D. Equipment Base, Support and Vibration Isolation.

E. Fire Protection Systems.

F. Fire Pumps and Accessories.

1.03 REFERENCES

A. ASTM A 120 Steel Pipes, Welded or Seamless, Black or Galvanized Dimensions (BS1387).

B. ASTM A 106 Wrot Steel Pipes for Corrosion Resistant Services (BS 1600, Part 1).C. ANSI B 16.9 Pipe Fittings of Wrot Carbon Steel or Alloy Steel for Moderate and Elevated

Temperatures.

D. ANSI B 2.1 Pipe Threads (BS-21).E. ANSI B 16.1 Cast Iron Flanges (BS 4504).F. ANSI B 16.5 Steel Flanges (BS 1560).G. ANSI B 16.3 Black or Galvanized Malleable Iron Threaded Pipe Fittings (BS 143 / ISO

R-7).H. ANSI B 16.11 Black or Galvanized Malleable Iron Threaded Pipe Fittings (BS 143 / ISO

R-7).I. ASTM B 88 Seamless Copper Tubes for Water Services (BS 2871).J. ANSI B 16.18 Cast Bronze Solder Joint Pressure Fittings (BS 864, Part 2).K. ANSI B 16.22 Wrot Copper Solder Joint Pressure Fittings (BS 864, Part 2).L. ANSI B 32 Solder Alloys (BS 219).M. AWS A 5.8 Brazing Filler Metals (BS 1845).N. ANSI B 16.21 Non-metallic Gaskets for Pipe Flanges.



O. BS 4375 PTFE (Teflon) Tape for Thread Sealing Applications.P. ANSI B 31.1 Power Piping.

Q. AWS D 10.9 Standard for Building Services Piping.R. ASME Section 9 Welding and Brazing Qualifications.S. API 600 General Design Specifications for Gate, Globe and Check Valves (BS 1414,

BS 1873 and BS 1868 respectively).T. ANSI B 16.34 Pressure Temperature Ratings of Valves (BS 5351, BS 1560).U. ANSI B 16.10 Face to Face Dimensions of Cast Iron Gate, Globe and Check Valves (BS

2080).V. ANSI B 16.5 End Flange Dimensions of Cast Steel Valves (BS 1560).

1.04 ACCEPTABLE MANUFACTURED

A. Pipes

1. NIPPON STEEL MITTAL

2. NOVA HUT CHEKOSILWAKIYA

3. PETRA ITALY

B. Fitting. Groove

1. VICTAULIC USA

2. SHORJOINT USA

3. GRINNEL TYCO USA

C. Threaded and welded

1. HITACHI JAPAN

2. CRANE UK

3. PENIKEN JAPAN

D. All valves and similar control gear shall have the manufacturer's name or logo, size, pressure ratingand direction of flow cast-on, on the body.

E. Maintain uniformity in respect of connection standards (threads or flanges) throughout. Where thisis not practical due to justifiable reasons, ensure compatibility, by using appropriate adaptors,conversion spools, mating flanges and the like, with the written approval of the Engineer.

F. Pipes incorporated in the works shall have the standard of manufacturer, type, class or rating etccontinuously printed or marked otherwise in compliance with the standard of manufacture.Materials without such identification shall be rejected.

G. Refer to and comply with other general requirements stated in Section 15300.

1.05 SUBMITTALS

A. Submit product data including pipe fittings, recommended coating materials etc. and samples underprovisions of Section 01300.

B. Submit data on valves and accessories and copies of valve ordering schedules for approval prior toordering valves.



1.06 DELIVERY, STORAGE AND HANDLING

A. Deliver products to site, store and protect them under provisions of Section 01600.

B. Apply two coats of approved primer to all untreated ferrous pipes prior to storage.

C. Store pipes on elevated racks and keep the ends closed with factory manufactured plugs to preventthe entry of foreign matter.

D. Store plastic and rubber products out of direct sunlight.

E. Deliver and store valves in shipping containers with labelling in place. Store plug and ball valves inopen position and gate / globe valves in closed position to prevent damage to valve seats. Retainflange protectors on the valves, until installation to prevent damage to the flange faces.

PART 2 - PRODUCTS

2.01 PIPES AND FITTINGS

SERVICE LOCATION TYPE

A. Hose reel system All Galvanized wrought steel, nom. dia. schedule 40seamless.

B. Sprinkler system piping upto 50 mm nom. dia

All Galvanized wrought steel schedule 40, seamless.

C. Sprinkler system piping 65mm nom dia. and larger

All Black, wrought steel sch. 40, seamless

D. Sprinkler system pipingrunning in curved routes

All Galvanized wrought steel, nom. dia schedule 40seamless.

E. Supply to water motor alarm All Galvanized wrought steel pipe.

F. External ring main pipingup to 150 mm nom. dia

All Ductile iron pipes cement lined.

2.02 JOINTS

A. Black wrought steel: Victaulic joints.B. Galvanised wrought steel, 2 inch diameter and less: Threaded, with Teflon tape or joining

compound (non-toxic) applied to pipe threads.D. All joints shall be rated for 1724 Kpa (250 psig) working water pressure at 121 deg.C (250 deg.F).

2.03 FLANGES, UNIONS, AND COUPLINGS

A. For pipe sizes 50 mm (2 inch) nom. dia. and under1. Black steel piping: Malleable iron unions with brass seat, threaded ends.

2. Galvanized steel piping: Galvanized iron unions with brass seat, threaded ends.

B. For pipe sizes 65 mm (2 1/2 inch) nom. dia. and over1. Black steel piping: Cast / Grooved Victaulic fitting / welding neck / slip-on flanges.

2. Galvanized steel piping: Galvanized malleable iron flanges with stiffening ribs, threadedend.

3. Use compressed fibre gaskets for flanges (use of rubber gasket is prohibited).



C. Grooved and shouldered pipe end couplings: Malleable iron housing clamps to engage and lock,designed to permit some angular deflection, contraction and expansion; "C" shape compositionsealing gasket; steel bolts, nuts and washers; galvanized couplings for galvanized pipe.

D. Dielectric connections: Use dielectric unions with one end malleable iron threaded and the otherend copper solder for pipe sizes 50 mm (2 inch) nom. dia. and under. Use dielectric flanged fittingsfor pipe sizes 65 mm (2 1/2 inch) nom. dia. and above. Both unions and flanges shall have waterimpervious isolation barrier certified to withstand a minimum 600 volts on a dry line with noflashover.

E. All flanges, unions and couplings shall be rated for 1724 Kpa (250 psig) working water pressure at121 deg.C (250 deg.F).

2.04 VALVES GENERAL

A. Provide valves from same manufacturer throughout where possible.

B. Acceptable Manufacturers

1. NIBCO. USA

2. KITZ. CORPORATION JAPAN

3. CRANE. UK.

2.05 GATE VALVES

A. Up to 50 mm (2 inch) nom. size: Bronze body rising stem and union bonnet, solid wedge or disc,threaded ends.

B. Over 50 mm (2 inch) nom. size: Iron body, bronze mounted (IBBM), outside screw and Yoke(OS&Y), solid wedge, renewable seats, flanged ends.

2.06 GLOBE VALVES

A. Up to 50 mm (2 inch) nom. size: Bronze body, rising stem, union bonnet, renewable compositiondisc, threaded ends.

B. Over 50 mm (2 inch) nom. size: Iron body, bronze mounted (IBBM), rising stem , OS&Y,renewable seat, flanged ends.

2.07 CHECK VALVES

A. Up to 50 mm (2 inch) nom. size: Bronze, in-line, resilient seat and disc, spring loaded, screwedends.

B. Over 50 mm (2 inch) nom. size: Iron body, bronze trim, spring loaded, renewable composite discand seat, flanged ends.

2.08 DRAIN VALVES

A. Bronze angle globe pattern, key operated, threaded inlet and hose connection outlet with cap andchain.

2.09 PRESSURE RATINGS

A. Unless otherwise indicated all valves shall be rated for 1724 Kpa (250 psig) working waterpressure at 121 deg.C (250 deg.F).

B. Contractor shall allow for selecting higher pressure rated valves to meet the valve constructionfeatures.

2.10 VALVE OPERATORS

A. Provide hand wheels / operating levers for valves as appropriate. Hand wheels for gate and globevalves 50 mm (2 inch) nom. dia. and smaller, shall be non-ferrous metal (die cast zinc / aluminiumalloy etc.).



B. Provide chain operated sheaves for valves located more than 2 meters (7 feet) above floor. Extendchains to about 150 cm (5 feet) above floor and hook to clips in order to clear walkways andequipment.

PART 3 - EXECUTION

3.01 PREPARATION

A. Cut pipes and tubes perpendicular to the axis, with approved cutting tools; ream the ends andremove burrs.

B. Remove scale and dirt, on inside and outside, before assembly. Remove weld splatter afterassembly.

C. Repair and repaint ductile iron and galvanised iron pipes and fittings with approved paint(recommended by the manufacturer) where factory coating has been damaged.

D. Prepare piping connections to equipment with flanges or unions.

3.02 SPACING AND LOCATION

A. Install piping in a way that conserves building space and does not interfere with the use of space.

B. Install exposed piping parallel or at right angles to the building walls, except where otherwiseshown on the Contract drawings.

C. Provide minimum clearances between piping covered by this Section and other services.

D. Provide adequate clearance for installation of insulation and access to valves and fittings.

E. Group piping at common elevations, wherever possible.

C. Install piping to allow for expansion and contraction without stressing pipe joints or connectedequipment.

D. Mineral wool / rock wool or intumescent cushion shall be used when the pipelines cross a fire ratedwalls.

E. Provide access doors where valves and fittings are not exposed. Coordinate size and location ofaccess doors.

3.03 PIPE FITTINGS

A. Where changes in pipe sizes occur, install tapered reducer fittings. Use of site fabricated fittings orbushing is not permitted.

B. Install tapered, factory manufactured reducer fittings (eccentric type at suction and concentric typeat discharge) at pump connections. Install eccentric reducer fittings with level crown.

C. Where changes in pipe direction occur install factory manufactured fittings. Bending or forming ofpiping is not permitted without Engineer's written permission.

D. The use of main sized saddle branch connections or directly connecting profiled branches(weldolets) to mains in steel piping is allowed if main is two pipe sizes larger than branch. Do notproject branch pipes inside the main pipe.

3.04 SLOPES AND INVERTS

A. Slope sprinkler piping and arrange to drain at installation control valves / floor control assemblies.Provide additional drain valves / automatic ball drips at undrainable segments of piping and pipetheir discharge to a convenient location.



3.05 THREADS AND SEALANTS

A. Cut full depth threads on prepared pipe ends, preferably using power driven machines using cuttingfluids. Clean the thread thoroughly before applying thread sealant.

B. Use Teflon thread sealing tapes or hard setting, non-toxic sealing compounds on the male threadbefore making joints. Any joint opened for repairs shall be brushed clean and given fresh sealingtape or compound.

3.06 VALVES

A. Install valves with stem upright or horizontal, not inverted, except with written permission of theEngineer for each location.

B. All valves shall be same size as pipeline, except where shown otherwise on the contract drawings.

C. Install gate valves for shutoff and to isolate equipment, part of systems or risers.

D. Install globe valves for throttling, bypass, or manual flow control services.

E. Install drain valves at system low points and at the foot of return risers.

F. Install in-line spring loaded check valves at the discharge of fire pumps and flap type check valveson the Fire Brigade Breaching line and express riser connection to roof water storage tanks.

G. Padlock all valves in open or closed position with leather strap, as required.

H. Select appropriate valve gland packing, sealing and gasket materials for the temperature andpressure encountered.

3.07 UNIONS AND FLANGES

A. Provide flanges / unions on horizontal pressure piping at spacing not exceeding 18.0 Ms (60 feet).B. Use grooved mechanical couplings and fasteners only in accessible locations.

C. Install unions or flanges downstream of valves and at equipment or apparatus connections.

D. Install dielectric unions or flanged fittings wherever joining dissimilar metals.3.08 PROTECTION DURING CONSTRUCTION

A. During progress of work keep the ends of all piping closed with factory manufactured plugs orblind flanges with integral indicating flags, to prevent the entry of foreign matter. Ensure theremoval of such plugs or flanges on completion of the works.

B. Keep all water sprinkler piping outlets closed with threaded pipe stub with one end crimped orclosed otherwise until the time of installing the sprinklers.

C. Protect the piping surface from splashes of cement, plaster, paint and similar constructionmaterials.

D. Blow out all of the piping using dry compressed air, prior to testing.

3.09 SPECIALITY CONNECTORS

A. Use return bends and custom made extensions for sprinklers installed in areas with false ceiling.

3.10 TESTING OF PRESSURIZED PIPING

A. The pipes shall be jointed, plugged and shall have been in position for at least 24 hours, before thetests are carried out.

B. The piping shall be tested for line, gradient and water tightness. Furnish all labour and necessarytesting instruments such as gauges, pumps etc. as directed by the Engineer. A minimum of 2 nos.identical pressure gauges shall be installed at extremities of the piping circuit to be tested.



C. Fill the piping with clean fresh water, leaving all high points open to allow for purging of air.Allow a soaking period of at least 24 hours for cement lined pipes.

D. Pressure test the system using manual pumps in increments of 25 percent of the test pressure.Allow a standing period of 10 minutes after each pressure increment. Pressure testing using motordriven pump is not permitted.

E. Do not over pressurize the system under any circumstance. If the test pressure is close to themaximum permissible working pressure of any of the system components, install calibratedpressure relief valves in the tested circuit.

F. Prior to testing keep all valves and control devices in open position. After completion of pressuretest, close each valve one at a time starting from the pressure release end, so as to ensure tightnessof the valve.

G. The piping shall be hydrostatically tested to a pressure of 689 Kpa (100 psig) or 1.5 times thesystem working pressure, whichever is greater, but limited to 1379 Kpa (200 psig). The pressureshall be maintained for at least 4 hours. Allow for pressure fluctuations due to ambient temperaturevariations. Record the circuit temperature along with the pressure readings.

H. Check for leaks by swabbing with a dry tissue. Drop in pressure to the order of 10 Kpa (1.5 psig)per hour, but without any visible leaks, shall be considered as acceptable.

I. Do not subject sprinklers to the test pressure.J. Test the piping in segments during the progress of the work. Maintain an official log book for

recording the tests carried out on sections of piping, including test pressure, date of test andapproval signature of Engineer's representative witnessing the test.

3.11 SYSTEM FLUSHING AND CHARGING

A. Drain the complete piping after completion of all tests and flush with fresh water intended for fireprotection services. Do not leave any segment of the piping partially filled with water at any time,to prevent the occurrence of internal corrosion.

B. Leave all air release outlets open to purge the air in the system and fill the system gradually usingthe jockey pump.

3.12 PROTECTION

Give the following protective coatings / wrappings to piping, on completion of the works. All piping abovelouvered ceilings shall be painted black as further described in architectural finish schedule.

A. Exposed, black steel piping

1. Two coats of red oxide primer.

2. Two coats of fire red enamel paint (or colour matching with the surrounding architecturalfinish, in areas exposed to view).

B. Concealed (in shafts) black steel piping1. Two coats of red oxide primer.

2. Two coats of coal tar enamel.

C. Exposed galvanized iron piping

1. Two coats of zinc chromate primer.


D. Concealed (in shafts) galvanized iron piping1. Two coats of zinc chromate primer.

2. Two coats of coal tar enamel.



E. Exposed uninsulated copper piping

1. Two coats of clear, synthetic lacquer.


F. Black steel piping - buried

1. Two (2) coats of red oxide primer.2. One (1) layer of asphalt impregnated felt wrap with 25 mm (1 inch) overlaps.

G. Concealed copper piping in shafts and chases:

1. Two (2) coats with clear, synthetic lacquer or other suitable primer.H. Buried Copper Piping:

1. Two (2) coats of clear synthetic lacquer.2. One (1) layer of asphalt impregnated felt wrap with 25 mm (1 inch) overlaps.3. Colored, plastic foil warning grids (outside building lines only).

3.13 SYSTEM TEST

A. Maintain a log of the jockey pump operation after the system has been commissioned.B. Check and repair leakages, if any, indicated by too frequent and excessive operation of the jockey

pump.

END OF SECTION

15310 290-2-3 fire protection piping

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