23_70_03.00_10_HEATING_AND_UTILITIES_SYSTEMS _CENTRAL_STEAM.pdf

WEST POI NT ELEMENTARY SCHOOL REPLACEMENT W91236-15-D-0014

SECTI ON 23 70 03. 00 10

HEATI NG AND UTI LI TI ES SYSTEMS, CENTRAL STEAM

01/08

PART 1 GENERAL

1. 1 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.

AMERI CAN WELDI NG SOCI ETY ( AWS)

AWS D1. 1/ D1. 1M ( 2015; Er r at a 2015) St r uct ur al Wel di ng Code - St eel

ASME I NTERNATI ONAL ( ASME)

ASME B1. 20. 1 ( 2013) Pi pe Thr eads, Gener al Pur pose ( I nch)

ASME B16. 21 ( 2011) Nonmet al l i c Fl at Gasket s f or Pi pe Flanges

ASME B16. 3 ( 2011) Mal l eabl e I r on Thr eaded Fi t t i ngs, Cl asses 150 and 300

ASME B16. 39 ( 2014) St andar d f or Mal l eabl e I r on Thr eaded Pi pe Uni ons; Cl asses 150, 250, and 300

ASME B16. 5 ( 2013) Pi pe Fl anges and Fl anged Fi t t i ngs:

NPS 1/ 2 Thr ough NPS 24 Met r i c/ I nch St andar d

ASME B16. 9 ( 2012) St andar d f or Fact or y- Made Wr ought St eel But t wel di ng Fi t t i ngs

ASME B31. 1 ( 2014; I NT 1- 47) Power Pi pi ng

ASME B40. 100 ( 2013) Pr essur e Gauges and Gauge Attachments

ASME BPVC SEC I X ( 2010) BPVC Sect i on I X- Wel di ng and Br azi ng Qualifications

ASME BPVC SEC VI I I D1 ( 2010) BPVC Sect i on VI I I - Rul es f or Const r uct i on of Pr essur e Vessel s Di v i s i on 1

ASME PTC 19. 3 TW ( 2010) Ther mowel l s Per f or mance Test Codes

ASTM I NTERNATI ONAL ( ASTM)

ASTM A106/ A106M ( 2014) St andar d Speci f i cat i on f or Seaml ess Car bon St eel Pi pe f or Hi gh- Temper at ur e Service

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ASTM A181/ A181M ( 2014) St andar d Speci f i cat i on f or Car bon St eel For gi ngs, f or Gener al - Pur pose Pi pi ng

ASTM A53/ A53M ( 2012) St andar d Speci f i cat i on f or Pi pe, St eel , Bl ack and Hot - Di pped, Zi nc- Coat ed, Wel ded and Seaml ess

ASTM A733 ( 2013) St andar d Speci f i cat i on f or Wel ded and Seaml ess Car bon St eel and Aust eni t i c St ai nl ess St eel Pi pe Ni ppl es

ASTM D3308 ( 2012) PTFE Resi n Ski ved Tape

EXPANSI ON JOI NT MANUFACTURERS ASSOCI ATI ON ( EJMA)

EJMA St ds ( 2011) EJMA St andar ds

MANUFACTURERS STANDARDI ZATI ON SOCI ETY OF THE VALVE AND FI TTI NGS

I NDUSTRY ( MSS)

MSS SP- 25 ( 2013) St andar d Mar ki ng Syst em f or Val ves, Fi t t i ngs, Fl anges and Uni ons

MSS SP- 58 ( 1993; Reaf f i r med 2010) Pi pe Hanger s and Suppor t s - Mat er i al s, Desi gn and Manuf act ur e, Sel ect i on, Appl i cat i on, and Installation

MSS SP- 69 ( 2003; Not i ce 2012) Pi pe Hanger s and Suppor t s - Sel ect i on and Appl i cat i on ( ANSI Appr oved Amer i can Nat i onal St andar d)

MSS SP- 70 ( 2011) Gr ay I r on Gat e Val ves, Fl anged and Thr eaded Ends

MSS SP- 71 ( 2011; Er r at a 2013) Gr ay I r on Swi ng Check Val ves, Fl anged and Thr eaded Ends

MSS SP- 80 ( 2013) Br onze Gat e, Gl obe, Angl e and Check Valves

MSS SP- 85 ( 2011) Gr ay I r on Gl obe & Angl e Val ves Fl anged and Thr eaded Ends

NATI ONAL ELECTRI CAL MANUFACTURERS ASSOCI ATI ON ( NEMA)

NEMA MG 1 ( 2014) Mot or s and Gener at or s

PLUMBI NG- HEATI NG- COOLI NG CONTRACTORS ASSOCI ATI ON ( PHCC)

NAPHCC NSPC ( 2009) Nat i onal St andar d Pl umbi ng Code

1. 2 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or i nf or mat i on onl y. When used, a desi gnat i on f ol l owi ng t he " G" desi gnat i on i dent i f i es t he of f i ce t hat wi l l r evi ew t he submi t t al f or t he Gover nment . Submi t t al s wi t h an " S" ar e f or i ncl usi on i n t he Sust ai nabi l i t y Not ebook, i n conf or mance t o Sect i on

SECTI ON 23 70 03. 00 10 Page 2

01 33 29 SUSTAI NABI LI TY REPORTI NG. Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL PROCEDURES:

SD- 02 Shop Dr awi ngs

Installation Pi pe Anchor s

SD- 03 Pr oduct Dat a

Welding Syst em Equi pment

SD- 06 Test Repor t s

Adj ust i ng, Bal anci ng, Test i ng and I nspect i ng

SD- 10 Oper at i on and Mai nt enance Dat a

Oper at i ng and Mai nt enance I nst r uct i ons

1. 3 QUALI TY ASSURANCE

1. 3. 1 Welding

Submi t a copy of qual i f i ed pr ocedur es and a l i s t of names and i dent i f i cat i on symbol s of qual i f i ed wel der s and wel di ng oper at or s. Pi pi ng shal l be wel ded i n accor dance wi t h qual i f i ed pr ocedur es usi ng per f or mance- qual i f i ed wel der s and wel di ng oper at or s. Pr ocedur es and wel der s shal l be qual i f i ed i n accor dance wi t h ASME BPVC SEC I X. Wel di ng pr ocedur es qual i f i ed by ot her s, and wel der s and wel di ng oper at or s qual i f i ed by anot her empl oyer may be accept ed as per mi t t ed by ASME B31. 1. The Cont r act i ng Of f i cer shal l be not i f i ed 24 hour s i n advance of t est s and t he t est s shal l be per f or med at t he wor k s i t e i f pr act i cal . The wel der or wel di ng oper at or shal l appl y hi s assi gned symbol near each wel d he makes as a per manent r ecor d. St r uct ur al member s shal l be wel ded i n accor dance wi t h Sect i on 05 05 23. 16 STRUCTURAL WELDI NG.

1. 3. 2 Use of Asbest os Pr oduct s

Pr oduct s whi ch cont ai n asbest os ar e pr ohi bi t ed. Thi s pr ohi bi t i on i ncl udes i t ems such as packi ngs or gasket s, even t hough t he i t em i s encapsul at ed or t he asbest os f i ber s ar e i mpr egnat ed wi t h bi nder mat er i al .

1. 4 DELI VERY, STORAGE, AND HANDLI NG

Pr ot ect al l equi pment del i ver ed and pl aced i n st or age f r om weat her , humi di t y and t emper at ur e var i at i ons, di r t and dust , or ot her cont ami nant s.

PART 2 PRODUCTS

2. 1 MATERI ALS AND EQUI PMENT

2. 1. 1 St andar d Pr oduct s

Pr ovi de mat er i al s and equi pment whi ch ar e t he st andar d pr oduct s of a manuf act ur er r egul ar l y engaged i n t he manuf act ur e of t he pr oduct s and t hat essent i al l y dupl i cat e i t ems t hat have been i n sat i sf act or y use f or at l east 2 year s pr i or t o bi d openi ng. Equi pment shal l be suppor t ed by a ser vi ce

SECTI ON 23 70 03. 00 10 Page 3 or gani zat i on t hat i s , i n t he opi ni on of t he Cont r act i ng Of f i cer , r easonabl y conveni ent t o t he s i t e.

2. 1. 2 Nameplates

Each maj or i t em of equi pment shal l have t he manuf act ur er ' s name, addr ess, t ype or st y l e, model or ser i al number , and cat al og number on a pl at e secur ed t o t he i t em of equi pment .

2. 1. 3 Pr event i on of Rust

Unl ess ot her wi se speci f i ed, sur f aces of f er r ous met al subj ect t o cor r osi on shal l be f act or y pr i me pai nt ed wi t h a r ust i nhi bi t i ng coat i ng and subsequent l y f act or y f i ni sh pai nt ed i n accor dance wi t h t he manuf act ur er ' s st andar d pr act i ce. Equi pment exposed t o hi gh t emper at ur e when i n ser vi ce shal l be pr i me and f i ni sh pai nt ed wi t h t he manuf act ur er ' s st andar d heat r esi st ant pai nt t o a mi ni mum t hi ckness of 1 mi l .

2. 2 MATERIALS

Submi t spar e par t s dat a f or each i t em of equi pment pr ovi ded, af t er appr oval of t he dr awi ngs and not l at er t han 2 mont hs bef or e t he dat e of benef i c i al occupancy. I ncl ude i n t he dat a a compl et e l i s t of spar e par t s and suppl i es, wi t h cur r ent uni t pr i ces and suppl y sour ces. Mat er i al s shal l conf or m t o t he f ol l owi ng:

2. 2. 1 Pi pe and Pi pe Fi t t i ngs

2. 2. 1. 1 Mal l eabl e I r on Pi pe Fi t t i ngs

ASME B16. 3, t ype r equi r ed t o mat ch adj acent pi pi ng.

2. 2. 1. 2 Nipples

ASTM A733, st andar d wei ght .

2. 2. 1. 3 Pipe

ASTM A53/ A53M or ASTM A106/ A106M, Gr ade A or B, bl ack st eel . Pi pe shal l be st andar d wei ght unl ess ot her wi se speci f i ed.

2. 2. 1. 4 Wel di ng Fi t t i ngs f or Pi pe

ASME B16. 9.

2. 2. 1. 5 Pi pe Fl anges and Fl anged Fi t t i ngs

St eel f l anges, ASTM A181/ A181M and ASME B16. 5. Convol ut ed f l anges shal l mat e wi t h ASME B16. 5, Cl ass 150 f l anges. Fl anges and f i t t i ngs shal l have t he manuf act ur er ' s t r ademar k af f i xed i n accor dance wi t h MSS SP- 25 so as t o per manent l y i dent i f y t he manuf act ur er .

2. 2. 1. 6 Pi pe Hanger s, I nser t s, and Suppor t s

MSS SP- 58.

2. 2. 1. 7 Pi pe Thr eads

ASME B1. 20. 1.

SECTI ON 23 70 03. 00 10 Page 4

2. 2. 1. 8 Unions

ASME B16. 39, t ype t o mat ch adj acent pi pi ng.

2. 2. 1. 9 Gaskets

ASME B16. 21. Appr oved met al l i c sel f - cent er i ng st y l e and r i ng st y l e gasket consi st i ng of met al l i c r et ai ner and seal i ng gl and may be used f or i nt ended service.

2. 2. 2 Valves

2. 2. 2. 1 Check Val ves

a. Si zes 3 i nches and l ess, br onze: MSS SP- 80, Type 3 or 4, Cl ass 125.

b. Si zes 2 i nches t hr ough 24 i nches, cast i r on: MSS SP- 71, Type I I I or I V, Cl ass 125.

2. 2. 2. 2 Gl obe Val ves

a. Si zes 3 i nches and l ess, br onze: MSS SP- 80, Type 1, 2, and 3, Cl ass 125.

b. Si zes 2 i nches t hr ough 12 i nches, cast i r on: MSS SP- 85, Type I I I , Cl ass 125.

2. 2. 2. 3 Angl e Val ves

a. Si zes 3 i nches and l ess, br onze: MSS SP- 80, Type 1, 2, or 3, Cl ass 125.

b. Si zes 2 i nches t hr ough 12 i nches, cast i r on: MSS SP- 85, Type I V, Cl ass 125.

2. 2. 2. 4 Gat e Val ves

a. Si zes 3 i nches and l ess, br onze: MSS SP- 80, Type 1 or 2, Cl ass 125.

b. Si zes 2 i nches t hr ough 48 i nches, cast i r on: MSS SP- 70, Type I , Cl ass 125, Desi gn OT or OF ( OS & Y) , br onze t r i m.

2. 2. 3 El ect r i cal Mot or s

Mot or s shal l be as speci f i ed i n Sect i on 26 20 00 I NTERI OR DI STRI BUTI ON

SYSTEM.

2. 3 ELECTRI CAL WORK

Pr ovi de el ect r i cal mot or dr i ven equi pment speci f i ed compl et e wi t h mot or s, mot or st ar t er s, and cont r ol s. El ect r i cal equi pment and wi r i ng shal l be i n accor dance wi t h Sect i on 26 20 00 I NTERI OR DI STRI BUTI ON SYSTEM. El ect r i cal char act er i st i cs shal l be as speci f i ed or i ndi cat ed. I nt egr al s i ze mot or s shal l be t he pr emi um ef f i c i ency t ype i n accor dance wi t h NEMA MG 1. Pr ovi de mot or st ar t er s compl et e wi t h t her mal over l oad pr ot ect i on and ot her appur t enances necessar y f or t he mot or cont r ol speci f i ed. Each mot or shal l be of suf f i c i ent s i ze t o dr i ve t he equi pment at t he speci f i ed capaci t y wi t hout exceedi ng t he namepl at e r at i ng of t he mot or . Manual or aut omat i c cont r ol and pr ot ect i ve or s i gnal devi ces r equi r ed f or t he oper at i on

SECTI ON 23 70 03. 00 10 Page 5 speci f i ed, and any cont r ol wi r i ng r equi r ed f or cont r ol s and devi ces but not shown, shal l be pr ovi ded.

2. 4 SYSTEM EQUI PMENT

2. 4. 1 Cont r ol Val ves and Cont r ol l er s

2. 4. 1. 1 Pr essur e- Reduci ng Val ves

Val ves desi gned f or a wor ki ng pr essur e of not l ess t han 125 psi g shal l be pr ovi ded wher e i ndi cat ed or ot her wi se r equi r ed. Each r educi ng val ve shal l be adj ust ed t o mai nt ai n t he desi r ed t er mi nal pr essur e wi t hi n 3 psi , r egar dl ess of f l uct uat i ons i n t he i ni t i al pr essur e. Val ves shal l be qui et i n oper at i on. Reduci ng val ves pr ovi ded i n l i nes f or space heat i ng onl y shal l be of t he doubl e di sk and seat t ype or s l i di ng gat e and pl at e t ype.

Reduci ng val ves f or dead- end ser v i ce shal l be s i ngl e- seat ed or s l i di ng gat e and pl at e t ype. Par t s subj ect t o wear shal l be const r uct ed of noncor r odi bl e met al and shal l be easi l y r epl aceabl e.

2. 4. 2 St eam Tr aps

2. 4. 2. 1 Bucket Tr aps

Tr aps shal l be i nver t ed or ver t i cal bucket t ype wi t h aut omat i c ai r di schar ge. Tr aps shal l be desi gned f or a wor ki ng pr essur e of 150 psi g, but shal l oper at e under a st eam suppl y pr essur e of appr oxi mat el y 40 t o 100 psi g.

Each t r ap shal l have a heavy body and cap of f i ne- gr ai ned, gr ay cast i r on.

Bucket shal l be made of br ass; t he mechani sm of har d br onze; t he val ve and seat of st ai nl ess or monel ; or each of equi val ent mat er i al . Tr aps shal l be t est ed hydr ost at i cal l y under a pr essur e of 200 psi g. Tr aps shal l have capaci t i es as i ndi cat ed when oper at i ng under t he speci f i ed wor ki ng condi t i ons. St r ai ner shal l be pr ovi ded on t he i nl et connect i on of each t r ap. I mpact - oper at ed t r aps, i mpul se- oper at ed t r aps, or t her modynami c t r aps wi t h cont i nuous di schar ge may be i nst al l ed i n l i eu of bucket t r aps, subj ect t o appr oval . Ther most at i c t r aps desi gned f or a st eam wor ki ng pr essur e sui t abl e f or t he appl i cat i on may be f ur ni shed i n l i eu of t he t r aps speci f i ed above. Ther most at i c t r aps shal l be equi pped wi t h val ves and seat s of st ai nl ess st eel , or monel met al , and shal l have capaci t i es based on a pr essur e di f f er ent i al not i n excess of t he f ol l owi ng:

St eam Wor ki ng Pr essur e, psi g Di f f er ent i al , psi g

25-50 20

90-100 80

2. 5 SYSTEM ACCESSORI ES

2. 5. 1 Foundat i ons and Anchor age

Foundat i ons and anchor age f or pumpi ng uni t s and f or ot her heat i ng equi pment shal l be i n accor dance wi t h t he manuf act ur er ' s r equi r ement s.

2. 5. 2 Pr essur e Gauges and Ther momet er s

Gauges shal l be pr ovi ded f or pi pi ng as i ndi cat ed. Gauges shal l compl y wi t h ASME B40. 100 and t her momet er s shal l compl y wi t h ASME PTC 19. 3 TW. A

SECTI ON 23 70 03. 00 10 Page 6 t her momet er and pr essur e gauge shal l be pr ovi ded on t he st eam suppl y and r et ur n mai ns. Ther momet er s shal l be separ abl e socket t ype.

2. 5. 3 Vacuum Rel i ef Val ve

An appr oved vacuum r el i ef val ve shal l be i nst al l ed wher e i ndi cat ed. On shut of f of st eam suppl y and condensi ng of st eam, t he vacuum r el i ef val ve shal l aut omat i cal l y admi t ai r t o t he syst em.

2. 5. 4 Saf et y Val ves

Pop saf et y val ves shal l be pr ovi ded on t he l ow si de of each pr essur e r educi ng val ve. The val ves shal l be set t o open aut omat i cal l y and t o r el i eve st eam at 5 psi i n excess of t he set t i ng of t he r educi ng val ve, or as i ndi cat ed. Saf et y val ves shal l conf or m t o t he r equi r ement s of ASME BPVC SEC VI I I D1 and shal l be i nst al l ed as i ndi cat ed.

2. 5. 5 Drains

A dr ai n connect i on wi t h 1 i nch gat e val ve or 3/ 4 i nch hose bi b shal l be i nst al l ed at t he l owest poi nt i n t he r et ur n mai n. I n addi t i on, t hr eaded dr ai n connect i ons wi t h t hr eaded cap or pl ug shal l be i nst al l ed wher ever r equi r ed f or t hor ough dr ai ni ng of t he st eam syst em.

2. 6 PI PI NG AND ACCESSORI ES

2. 6. 1 Pi pe and Fi t t i ngs

2. 6. 1. 1 St eam Pi pi ng and Fi t t i ngs

Pi pi ng shal l be bl ack st eel , conf or mi ng t o ASTM A53/ A53M, Gr ade A.

Fi t t i ngs shal l be bl ack, mal l eabl e i r on or st eel . Fi t t i ngs adj acent t o val ves shal l sui t val ves speci f i ed. Reduci ng f i t t i ngs shal l be used f or changes i n pi pe s i zes. I n hor i zont al st eam l i nes, r educi ng f i t t i ngs shal l be t he eccent r i c t ype t o mai nt ai n t he bot t om of t he l i nes at t he same l evel .

2. 6. 1. 2 Condensat e Ret ur n Pi pi ng and Fi t t i ngs

Pi pi ng shal l be bl ack st eel , ext r a st r ong wei ght , conf or mi ng t o ASTM A53/ A53M, Gr ade A. Fi t t i ngs shal l be cast i r on or mal l eabl e i r on, ext r a heavy.

2. 6. 1. 3 Vent Pi pi ng and Fi t t i ngs

Pi pi ng shal l be bl ack st eel , conf or mi ng t o ASTM A53/ A53M, Gr ade A.

Fi t t i ngs shal l be bl ack mal l eabl e i r on t o sui t pi pi ng. Pl ast i c mat er i al s pol yet her i mi de ( PEI ) and pol yet her sul f one ( PES) ar e f or bi dden t o be used f or vent pi pi ng of combust i on gases.

2. 6. 1. 4 Gauge Pi pi ng

Pi pi ng shal l be copper t ubi ng, Type K or L, f or st eam and condensat e 25 psi g and l ess and st eel f or gr eat er t han 25 psi g.

2. 6. 1. 5 Pr ef abr i cat ed Under gr ound St eam Pi pi ng

I nt er nal pi pi ng shal l be st andar d wei ght bl ack st eel except f or condensat e pi pi ng, whi ch shal l be bl ack st eel , ext r a st r ong wei ght . Al l j oi nt s shal l be but t wel ded f or s i zes 2- 1/ 2 i nches and l ar ger , and socket wel ded f or 2

SECTI ON 23 70 03. 00 10 Page 7 jmitchell Highlight i nches and bel ow.

I nt er nal pi pe i nsul at i on shal l be cel l ul ar gl ass secur ed t o t he pi pe by st ai nl ess st eel bands. Mi ni mum i nsul at i on t hi ckness shal l be as def i ned i n speci f i cat i on Sect i on 23 07 00 THERMAL I NSULATI ON FOR MECHANI CAL SYSTEMS.

The st eel condui t shal l be smoot h wal l , wel ded st eel condui t of t hi ckness speci f i ed bel ow:

Condui t Si ze ( i nches) Condui t Thi ckness

6-26 10 Gauge

28-36 6 Gauge

38-42 4 Gauge

Condui t i nsul at i on shal l be spr ay- appl i ed pol yur et hane f oam 0. 18 k- f act or s wi t h R141B bl owi ng agent and havi ng a nomi nal 2l b/ f t ^3 densi t y f or al l s t r ai ght l engt hs and f i t t i ngs. The out er j acket shal l be f i ber gl ass ( FRP) or pol yet hyl ene. FRP j acket shal l be f i l ament wound, di r ect l y on t o t he ur et hane f oam i nsul at i on or at t he pi pi ng manuf act ur er s opt i on f oam i nj ect ed i s al l owed i nt o f i ber gl ass pi pe. Pol yet hyl ene casi ng shal l be a mi ni mum of 175 mi l .

2. 6. 2 Joints

Except as ot her wi se speci f i ed, f i t t i ngs used on st eel pi pe shal l be t hr eaded f or f i t t i ngs 1 i nch and smal l er ; t hr eaded or wel ded f or f i t t i ngs 1- 1/ 4 i nches up t hr ough 2- 1/ 2 i nches; and f l anged or wel ded f or f i t t i ngs 3 i nches and l ar ger . Joi nt s bet ween sect i ons of copper t ubi ng or pi pe shal l be f l ar ed or sweat ed. Pi pe and f i t t i ngs 1- 1/ 4 i nches and l ar ger and i nst al l ed i n i naccessi bl e condui t s or t r enches beneat h concr et e f l oor s l abs shal l be wel ded. Unl ess ot her wi se speci f i ed, connect i ons t o equi pment shal l be made wi t h bl ack mal l eabl e i r on uni ons f or pi pe 2- 1/ 2 i nches or smal l er i n di amet er , and wi t h f l anges f or pi pe 3 i nches or mor e, i n diameter.

2. 6. 2. 1 Bel l ows- Type Joi nt s

Joi nt s shal l be f l exi bl e, gui ded t ype. Expansi on el ement shal l be st ai nl ess st eel . Joi nt s shal l be i n accor dance wi t h t he appl i cabl e r equi r ement s of EJMA St ds and ASME B31. 1 wi t h i nt er nal l i ner s.

2. 6. 2. 2 Fl exi bl e Bal l Joi nt s

Joi nt s shal l be const r uct ed of st ai nl ess st eel , mal l eabl e i r on, duct i l e i r on, car bon st eel , br onze, or ot her al l oys as appr opr i at e f or t he ser vi ce intended.

2. 6. 2. 3 Di el ect r i c Wat er ways and Fl anges

Di el ect r i c wat er ways shal l conf or m t o t he t ensi l e st r engt h and di mensi onal r equi r ement s speci f i ed i n ASME B16. 39. Wat er ways shal l have met al connect i ons on bot h ends sui t ed t o mat ch adj acent pi pi ng. Di el ect r i c wat er ways shal l be i nt er nal l y l i ned wi t h an i nsul at or speci f i cal l y desi gned t o pr event cur r ent f l ow bet ween di ssi mi l ar met al s. Di el ect r i c wat er ways shal l have pr essur e and t emper at ur e r at i ng equal t o or gr eat er t han t hat

SECTI ON 23 70 03. 00 10 Page 8 jmitchell Highlight speci f i ed f or t he connect i ng pi pi ng. Di el ect r i c f l anges shal l meet t he per f or mance r equi r ement s descr i bed her ei n f or di el ect r i c wat er ways.

2. 6. 3 Strainers

Basket or Y- t ype st r ai ner s shal l be t he same si ze as t he pi pel i nes i n whi ch t hey ar e i nst al l ed. The st r ai ner bodi es shal l be cast - i r on r at ed f or 125 pound ser vi ce, wi t h bot t oms dr i l l ed and pl ugged. Bodi es shal l have ar r ows cast on t he s i des t o i ndi cat e t he di r ect i on of f l ow. Each st r ai ner shal l be equi pped wi t h a r emovabl e cover and sedi ment basket . Basket shal l not be l ess t han 22 gauge and shal l have per f or at i ons t o pr ovi de a net f r ee ar ea t hr ough t he basket of at l east f our t i mes t hat of t he ent er i ng pi pe.

PART 3 EXECUTI ON

3. 1 EXAMINATION

Af t er becomi ng f ami l i ar wi t h al l det ai l s of t he wor k, ver i f y al l di mensi ons i n t he f i el d, and advi se t he Cont r act i ng Of f i cer of any di scr epancy bef or e per f or mi ng any wor k.

3. 2 INSTALLATION

Al l wor k shal l be i nst al l ed as i ndi cat ed and i n accor dance wi t h t he manuf act ur er ' s di agr ams and r ecommendat i ons. Submi t det ai l dr awi ngs consi st i ng of schedul es, per f or mance char t s, br ochur es, di agr ams, dr awi ngs, and i nst r uct i ons necessar y f or i nst al l at i on of t he syst ems as speci f i ed.

Submi t det ai l dr awi ngs f or pumpi ng uni t s and appur t enances, i ncl udi ng cont r ol s. I ndi cat e i n t he Dr awi ngs c l ear ances r equi r ed f or mai nt enance and oper at i on and compl et e wi r i ng and schemat i c di agr ams, equi pment l ayout and anchor age, and any ot her det ai l s r equi r ed t o demonst r at e t hat t he syst em has been coor di nat ed and wi l l pr oper l y f unct i on as a uni t .

3. 2. 1 Piping

Unl ess ot her wi se speci f i ed, pi pe and f i t t i ng i nst al l at i on shal l conf or m t o t he r equi r ement s of ASME B31. 1. Pi pe shal l be cut accur at el y t o measur ement s est abl i shed at t he j obsi t e and wor ked i nt o pl ace wi t hout spr i ngi ng or f or c i ng, compl et el y c l ear i ng al l wi ndows, door s, and ot her openi ngs. Cut t i ng or ot her weakeni ng of t he bui l di ng st r uct ur e t o f aci l i t at e pi pi ng i nst al l at i on wi l l not be per mi t t ed wi t hout wr i t t en appr oval . Pi pi ng or t ubi ng shal l be cut squar e, shal l have bur r s r emoved by r eami ng, and shal l be so i nst al l ed as t o per mi t f r ee expansi on and cont r act i on wi t hout causi ng damage t o bui l di ng st r uct ur e, pi pe, j oi nt s, or hanger s. Fi l i ngs, dust , or di r t shal l be wi ped f r om i nt er i or of t he pi pe or t ubi ng bef or e connect i ons ar e made. Changes i n di r ect i on shal l be made wi t h f i t t i ngs, except t hat bendi ng of pi pe up t o 4 i nches s i ze wi l l be per mi t t ed, pr ovi ded a pi pe bender i s used and wi de sweep bends ar e f or med.

The cent er l i ne r adi us of bends shal l not be l ess t han si x di amet er s of t he pi pe. Bent pi pe showi ng k i nks, wr i nkl es, f l at t eni ngs, or ot her mal f or mat i ons wi l l not be accept ed. Vent pi pes shal l be i nst al l ed t hr ough t he r oof as di r ect ed and shal l be f l ashed as speci f i ed. Hor i zont al suppl y mai ns shal l pi t ch up or down i n t he di r ect i on of f l ow as i ndi cat ed. The gr ade shal l be not l ess t han 1 i nch i n 40 f eet . Reduci ng f i t t i ngs shal l be used f or changes i n pi pe s i zes. Open ends of pi pel i nes and equi pment shal l be capped or pl ugged dur i ng i nst al l at i on t o keep di r t or ot her f or ei gn mat er i al s out of t he syst ems. Pi pe not ot her wi se speci f i ed shal l be uncoat ed. Uni ons f or copper pi pe or t ubi ng shal l be br ass or br onze.

Connect i ons bet ween f er r ous pi pi ng and copper pi pi ng shal l be el ect r i cal l y

SECTI ON 23 70 03. 00 10 Page 9 i sol at ed f r om each ot her wi t h di el ect r i c wat er ways.

3. 2. 1. 1 Thr eaded Joi nt s

Thr eaded j oi nt s shal l be made wi t h t aper ed t hr eads pr oper l y cut , and shal l be made t i ght wi t h pol yt et r af l uor oet hyl ene ( PTFE) t ape compl yi ng wi t h ASTM D3308, or equi val ent j oi nt compound appl i ed t o t he mal e t hr eads onl y, and i n no case t o t he f i t t i ngs.

3. 2. 1. 2 Wel ded Joi nt s

Wel ded j oi nt s shal l be f usi on- wel ded unl ess ot her wi se r equi r ed. Changes i n di r ect i on of pi pi ng shal l be made wi t h wel di ng f i t t i ngs onl y. Br anch connect i on may be made wi t h ei t her wel di ng t ees or f or ged br anch out l et f i t t i ngs. Br anch out l et f i t t i ngs shal l be f or ged, f l ar ed f or i mpr ovement of f l ow wher e at t ached t o t he r un, and r ei nf or ced agai nst ext er nal st r ai ns.

Bevel i ng, al i gnment , heat t r eat ment , and i nspect i on of wel d shal l conf or m to ASME B31. 1. Wel d def ect s shal l be r emoved and r epai r s made t o t he wel d, or t he wel d j oi nt s shal l be ent i r el y r emoved and r ewel ded at no addi t i onal cost t o t he Gover nment . El ect r odes shal l be st or ed and dr i ed i n accor dance with AWS D1. 1/ D1. 1M or as r ecommended by t he manuf act ur er . El ect r odes t hat have been wet t ed or t hat have l ost any of t hei r coat i ng shal l not be used.

3. 2. 1. 3 Fl anges and Uni ons

Fl anges and uni ons shal l be f aced t r ue, and made squar e and t i ght . Gasket s shal l be nonasbest os compr essed mat er i al i n accor dance wi t h ASME B16. 21, 1/ 16 i nch t hi ckness, f ul l f ace or sel f - cent er i ng f l at r i ng t ype. The gasket s shal l cont ai n ar ami d f i ber s bonded wi t h st yr ene but adi ene r ubber ( SBR) or ni t r i l e but adi ene r ubber ( NBR) . NBR bi nder shal l be used f or hydr ocar bon ser v i ce. Uni on or f l ange j oi nt s shal l be pr ovi ded i n each l i ne i mmedi at el y pr ecedi ng t he connect i on t o each pi ece of equi pment or mat er i al r equi r i ng mai nt enance such as coi l s, pumps, cont r ol val ves, and ot her s i mi l ar i t ems.

3. 2. 1. 4 Copper Tube Ext r act ed Joi nt

An ext r act ed mechani cal t ee j oi nt may be used i n copper t ube. Joi nt shal l be pr oduced wi t h an appr opr i at e t ool by dr i l l i ng a pi l ot hol e and dr awi ng out t he t ube sur f ace t o f or m a col l ar havi ng a mi ni mum hei ght of t hr ee t i mes t he t hi ckness of t he t ube wal l . To pr event t he br anch t ube f r om bei ng i nser t ed beyond t he dept h of t he ext r act ed j oi nt , di mpl ed dept h st ops shal l be pr ovi ded. The br anch t ube shal l be not ched f or pr oper penet r at i on i nt o f i t t i ng t o ensur e a f r ee f l ow j oi nt . Joi nt s shal l be br azed i n accor dance wi t h t he NAPHCC NSPC. Sol der ed j oi nt s wi l l not be per mi t t ed.

3. 2. 2 Connect i ons t o Equi pment

Suppl y and r et ur n connect i ons shal l be pr ovi ded by t he Cont r act or unl ess ot her wi se i ndi cat ed. Val ves and t r aps shal l be i nst al l ed i n accor dance wi t h t he manuf act ur er ' s r ecommendat i ons. Unl ess ot her wi se i ndi cat ed, t he s i ze of t he suppl y and r et ur n pi pes t o each pi ece of equi pment shal l not be smal l er t han t he equi pment connect i ons. St eam and r et ur n connect i ons, unl ess ot her wi se i ndi cat ed, shal l be made wi t h mal l eabl e i r on uni ons f or pi pi ng 2- 1/ 2 i nches or l ess i n di amet er and wi t h f l anges f or pi pe 3 i nches or mor e, i n di amet er .

SECTI ON 23 70 03. 00 10 Page 10

3. 2. 3 Br anch Connect i ons

Br anches shal l pi t ch up or down as i ndi cat ed, unl ess ot her wi se speci f i ed.

Connect i on shal l be made t o ensur e unr est r i c t ed c i r cul at i on; el i mi nat e ai r pocket s; and per mi t dr ai nage of t he syst em. St eam suppl y and condensat e br anches t aken f r om mai ns shal l pi t ch wi t h a gr ade of not l ess t han 1 i nch i n 10 f eet , unl ess ot her wi se i ndi cat ed.

3. 2. 4 Risers

The l ocat i on of r i ser s i s appr oxi mat e. Exact l ocat i ons of t he r i ser s shal l be as appr oved. St eam suppl y downf eed r i ser s shal l t er mi nat e i n a di r t pocket and shal l be dr i p t r apped t o t he r et ur n.

3. 2. 5 Supports

3. 2. 5. 1 General

Hanger s used t o suppor t pi pi ng 2 i nches and l ar ger shal l be f abr i cat ed t o per mi t adequat e adj ust ment af t er er ect i on whi l e st i l l suppor t i ng t he l oad.

Pi pe gui des and anchor s shal l be i nst al l ed t o keep pi pes i n accur at e al i gnment , t o di r ect t he expansi on movement , and t o pr event buckl i ng, swayi ng, and undue st r ai n. Al l pi pi ng subj ect ed t o ver t i cal movement when oper at i ng t emper at ur es exceed ambi ent t emper at ur es, shal l be suppor t ed by var i abl e spr i ng hanger s and suppor t s or by const ant suppor t hanger s. Pi pe hanger l oads suspended f r om st eel j oi st bet ween panel poi nt s shal l not exceed 50 pounds. Loads exceedi ng 50 pounds shal l be suspended f r om panel points.

3. 2. 5. 2 Pi pe Hanger s, I nser t s, and Suppor t s

Pi pe hanger s, i nser t s and suppor t s shal l conf or m t o MSS SP- 58, except as modi f i ed her ei n.

a. Types 5, 12, and 26 shal l not be used.

b. Type 3 shal l not be used on i nsul at ed pi pe.

c. Type 18 i nser t s shal l be secur ed t o concr et e f or ms bef or e concr et e i s pl aced. Cont i nuous i nser t s whi ch al l ow mor e adj ust ment may be used i f t hey ot her wi se meet t he r equi r ement s f or t ype 18 i nser t s.

d. Type 19 and 23 C- cl amps shal l be t or qued i n accor dance wi t h MSS SP- 69 and have bot h l ocknut s and r et ai ni ng devi ces, f ur ni shed by t he manuf act ur er . The C- cl amp body shal l not be const r uct ed f r om bent plate.

e. Type 20 at t achment s used on angl es and channel s shal l be f ur ni shed wi t h an added mal l eabl e i r on heel pl at e or adapt er .

f . Type 24 may be used onl y on t r apeze hanger syst ems or on f abr i cat ed frames.

g. Wher e t ype 39 saddl e or t ype 40 shi el d ar e per mi t t ed f or a par t i cul ar pi pe at t achment appl i cat i on, t he t ype 39 saddl e wel ded t o t he pi pe, shal l be used on al l pi pe 4 i nches and l ar ger when t he t emper at ur e of t he medi um i s 60 degr ees F or hi gher . Type 40 shi el ds shal l be used on al l pi pi ng l ess t han 4 i nches and al l pi pi ng 4 i nches and l ar ger car r y i ng medi um l ess t han 60 degr ees F. A hi gh densi t y i nsul at i on

SECTI ON 23 70 03. 00 10 Page 11 i nser t of a densi t y 8 pcf or gr eat er shal l be used under t he t ype 40 shi el d f or pi pi ng 2 i nches and l ar ger .

h. Hor i zont al pi pe suppor t s shal l be spaced as speci f i ed i n MSS SP- 69 and a suppor t shal l be i nst al l ed not over 1 f oot f r om t he pi pe f i t t i ng j oi nt at each change i n di r ect i on of t he pi pi ng. Pi pe suppor t s shal l be spaced not over 5 f eet apar t at val ves. I n t he suppor t of mul t i pl e pi pe r uns on a common base member , a c l i p or c l amp shal l be used wher e each pi pe cr osses t he base suppor t member . Spaci ng of t he base suppor t member s shal l not exceed t he hanger and suppor t spaci ng r equi r ed f or any of t he i ndi v i dual pi pes i n t he mul t i pl e pi pe r un. The cl i ps or c l amps shal l be r i gi dl y connect ed t o t he common base member . A c l ear ance of 1/ 8 i nch shal l be pr ovi ded bet ween t he pi pe and cl i p or c l amp f or al l pi pi ng whi ch may be subj ect ed t o t her mal expansi on.

i . Ver t i cal pi pe shal l be suppor t ed at each f l oor , except at s l ab- on- gr ade, and at i nt er val s of not mor e t han 15 f eet , not mor e t han 8 f eet f r om end of r i ser s, and at vent t er mi nat i ons.

j . Type 35 gui des usi ng st eel , r ei nf or ced PTFE or gr aphi t e s l i des shal l be pr ovi ded wher e r equi r ed t o al l ow l ongi t udi nal pi pe movement . Lat er al r est r ai nt s shal l be pr ovi ded as r equi r ed. Sl i de mat er i al s shal l be sui t abl e f or t he syst em oper at i ng t emper at ur es, at mospher i c condi t i ons, and bear i ng l oads encount er ed.

( 1) Wher e st eel s l i des do not r equi r e pr ovi s i ons f or r est r ai nt of l at er al movement , an al t er nat e gui de met hod may be used. On pi pi ng 4 i nches and l ar ger car r y i ng medi um 60 degr ees F or hi gher , a t ype 39 saddl e may be wel ded t o t he pi pe and f r eel y r est on t he st eel pl at e. On pi pi ng under 4 i nches and pi pi ng 4 i nches and l ar ger car r y i ng medi um l ess t han 60 degr ees F a t ype 40 pr ot ect i on shi el d may be at t ached t o t he pi pe or i nsul at i on and f r eel y r est on a st eel pl at e. A hi gh densi t y i nsul at i on i nser t of densi t y 8 pcf or gr eat er shal l be used under al l shi el ds on pi pi ng 2 i nches and l ar ger .

( 2) Wher e t her e ar e hi gh syst em t emper at ur es and wel di ng t o pi pi ng i s not desi r abl e, t hen t he t ype 35 gui de shal l i ncl ude a pi pe cr adl e, wel ded t o t he gui de st r uct ur e and st r apped secur el y t o t he pi pe.

The pi pe shal l be separ at ed f r om t he s l i de mat er i al by at l east 4 i nches, or by an amount adequat e f or t he i nsul at i on, whi chever i s greater.

k. Pi pe hanger s on hor i zont al i nsul at ed pi pe shal l be t he s i ze of t he out s i de di amet er of t he i nsul at i on. The i nsul at i on shal l be cont i nuous t hr ough t he hanger on al l pi pe s i zes and appl i cat i ons.

l . Suppor t pi pi ng i n t r enches as i ndi cat ed.

3. 2. 6 Pi pe Sl eeves

Pi pe passi ng t hr ough concr et e or masonr y wal l s or concr et e f l oor s or r oof s shal l be pr ovi ded wi t h pi pe s l eeves f i t t ed i nt o pl ace at t he t i me of const r uct i on. Sl eeves shal l not be i nst al l ed i n st r uct ur al member s except wher e i ndi cat ed or appr oved. Rect angul ar and squar e openi ngs shal l be as det ai l ed on t he dr awi ngs. Each s l eeve shal l ext end t hr ough i t s r espect i ve wal l , f l oor , or r oof , and shal l be cut f l ush wi t h each sur f ace. Unl ess ot her wi se i ndi cat ed, s l eeves shal l be of such s i ze as t o pr ovi de a mi ni mum of 1/ 4 i nch al l ar ound cl ear ance bet ween sl eeve and bar e pi pe or i nsul at i on

SECTI ON 23 70 03. 00 10 Page 12 sur f ace. Sl eeves i n bear i ng wal l s, wat er pr oof i ng membr ane f l oor s, and wet ar eas shal l be st eel pi pe or cast - i r on pi pe. Sl eeves i n nonbear i ng wal l s, f l oor s, or cei l i ngs may be st eel pi pe, cast - i r on pi pe, or gal vani zed sheet met al wi t h l ock- t ype l ongi t udi nal seam and of t he met al t hi ckness i ndi cat ed. Except i n pi pe chases or i nt er i or wal l s, t he annul ar space bet ween pi pe and sl eeve or bet ween j acket over i nsul at i on and sl eeve i n nonf i r e- r at ed wal l s and f l oor s shal l be seal ed as i ndi cat ed and speci f i ed i n Sect i on 07 92 00 JOI NT SEALANTS and i n f i r e- r at ed wal l s and f l oor s shal l be as i ndi cat ed and speci f i ed i n Sect i on 07 84 00 FI RESTOPPI NG. Pi pes passi ng t hr ough wal l wat er pr oof i ng membr ane shal l be s l eeved as descr i bed above. I n addi t i on, a wat er pr oof i ng c l ampi ng f l ange shal l be i nst al l ed as indicated.

3. 2. 6. 1 Roof or Fl oor Penet r at i ons of Wat er pr oof i ng Membr ane

Pi pes shal l be i nst al l ed t hr ough a 4 pound l ead- f l ashi ng s l eeve, a 16 ounce copper s l eeve, or a 0. 032 i nch t hi ck al umi num sl eeve, each havi ng an i nt egr al ski r t or f l ange. Fl ashi ng s l eeve shal l be sui t abl y f or med. The ski r t or f l ange shal l ext end 8 i nches or mor e f r om t he pi pe and shal l be set over t he r oof or f l oor membr ane i n a t r owel ed coat i ng of bi t umi nous cement . The f l ashi ng s l eeve shal l ext end up t he pi pe a mi ni mum of 2 i nches above t he hi ghest f l ood l evel of t he r oof or a mi ni mum of 10 i nches above t he f l oor or r oof , whi chever i s gr eat er . The annul ar space bet ween t he f l ashi ng s l eeve and t he bar e pi pe or i nsul at i on sur f ace shal l be seal ed as i ndi cat ed. Pi pes up t o and i ncl udi ng 10 i nches i n di amet er passi ng t hr ough r oof or f l oor wat er pr oof i ng membr ane may be i nst al l ed t hr ough a cast - i r on s l eeve wi t h caul k i ng r ecess, anchor l ugs, f l ashi ng c l amp devi ce, and pr essur e r i ng wi t h br ass bol t s. Wat er pr oof i ng membr ane shal l be c l amped i nt o pl ace and seal ant shal l be pl aced i n t he caul k i ng r ecess.

3. 2. 6. 2 Opt i onal Seal i ng of Uni nsul at ed Pi pes

A modul ar mechani cal t ype seal i ng assembl y may be i nst al l ed. The seal s shal l consi st of i nt er l ocki ng synt het i c r ubber l i nks shaped t o cont i nuousl y f i l l t he annul ar space bet ween t he pi pe/ condui t and s l eeve wi t h cor r osi on- pr ot ect ed car bon st eel bol t s, nut s, and pr essur e pl at es. The l i nks shal l be l oosel y assembl ed wi t h bol t s t o f or m a cont i nuous r ubber bel t ar ound t he pi pe wi t h a pr essur e pl at e under each bol t head and each nut . Af t er t he seal assembl y i s pr oper l y posi t i oned i n t he s l eeve, t i ght eni ng of t he bol t shal l cause t he r ubber seal i ng el ement s t o expand and pr ovi de a wat er t i ght seal bet ween t he pi pe/ condui t and t he s l eeve.

Each seal assembl y shal l be s i zed as r ecommended by t he manuf act ur er t o f i t t he pi pe/ condui t and s l eeve i nvol ved. The Cont r act or el ect i ng t o use t he modul ar mechani cal t ype seal s shal l pr ovi de s l eeves of t he pr oper di amet er s.

3. 2. 6. 3 Opt i onal Count er f l ashi ng

As an al t er nat e t o caul k i ng and seal i ng t he annul ar space bet ween t he f l ashi ng s l eeve and bar e pi pe or i nsul at i on sur f ace, count er f l ashi ng may be by st andar d r oof coupl i ng f or t hr eaded pi pe up t o 6 i nchesi n di amet er ;

l ead- f l ashi ng s l eeve f or dr y vent s, s l eeve t ur ned down i nt o t he pi pe t o f or m a wat er pr oof j oi nt ; or t ack- wel ded or banded- met al r ai n shi el d ar ound t he pi pe, seal ed as i ndi cat ed.

3. 2. 6. 4 Escutcheons

Escut cheons shal l be pr ovi ded at al l f i ni shed sur f aces wher e exposed pi pi ng, bar e or cover ed, passes t hr ough f l oor s, wal l s, or cei l i ngs, except i n boi l er , ut i l i t y , or equi pment r ooms. Escut cheons shal l be f ast ened

SECTI ON 23 70 03. 00 10 Page 13 secur el y t o pi pe s l eeves or t o ext ensi ons of s l eeves wi t hout any par t of s l eeves v i s i bl e. Wher e s l eeves pr oj ect s l i ght l y f r om f l oor s, speci al deep- t ype escut cheons shal l be used. Escut cheons shal l be chr omi um- pl at ed i r on or br ass, ei t her one- pi ece or spl i t - pat t er n, hel d i n pl ace by i nt er nal spr i ng t ensi on or set scr ew.

3. 2. 7 Pi pe Anchor s

Submi t det ai l ed dr awi ngs of pi pe anchor s, bef or e i nst al l at i on. Anchor s shal l be pr ovi ded wher e necessar y or i ndi cat ed t o l ocal i ze expansi on or pr event undue st r ai n on pi pi ng. Anchor s shal l consi st of heavy st eel col l ar s wi t h l ugs and bol t s f or c l ampi ng and at t achi ng anchor br aces, unl ess ot her wi se i ndi cat ed. Anchor br aces shal l be i nst al l ed usi ng t ur nbuckl es wher e r equi r ed. Suppor t s, anchor s, or st ays shal l be l ocat ed t o pr event damage by i nst al l at i on oper at i ons or by t he wei ght or expansi on of t he pi pel i ne.

3. 2. 8 Pi pe Expansi on

The expansi on of suppl y and r et ur n pi pes shal l be pr ovi ded f or by changes i n t he di r ect i on of t he r un of pi pe, by expansi on l oops, or by expansi on j oi nt s as i ndi cat ed. Condensat e and st eam expansi on j oi nt s shal l be one of t he t ypes speci f i ed.

3. 2. 8. 1 Expansi on Loops

Expansi on l oops shal l pr ovi de adequat e expansi on of t he mai n st r ai ght r uns of t he syst em wi t hi n t he st r ess l i mi t s speci f i ed i n ASME B31. 1. Loops shal l be col d- spr ung and i nst al l ed wher e i ndi cat ed. Pi pe gui des shal l be pr ovi ded as i ndi cat ed.

3. 2. 8. 2 Sl i p- Tube Type Expansi on Joi nt s

Sl i p- t ube t ype expansi on j oi nt s shal l be used f or st eam and condensat e syst ems onl y and shal l be i nst al l ed wher e i ndi cat ed. Joi nt s shal l pr ovi de f or ei t her s i ngl e or doubl e s l i p of t he connect ed pi pes and t emper at ur e and pr essur e sui t abl e f or appl i cat i on, i n no case l ess t han psi g. Joi nt s shal l be i n accor dance wi t h appl i cabl e r equi r ement s of EJMA St ds and ASME B31. 1, Type I or I I I . End connect i ons shal l be f l anged. Anchor bases or suppor t bases shal l be pr ovi ded as i ndi cat ed or r equi r ed. I ni t i al set t i ng shal l be made i n accor dance wi t h t he manuf act ur er ' s r ecommendat i ons t o al l ow f or ambi ent t emper at ur e at t i me of i nst al l at i on. Pi pe al i gnment gui des shal l be i nst al l ed as r ecommended by t he j oi nt manuf act ur er , but shal l be not mor e t han 5 f eet f r om expansi on j oi nt , except i n l i nes 4 i nches or smal l er wher e gui des shal l be i nst al l ed not mor e t han 2 f eet f r om t he joint.

3. 2. 8. 3 Bel l ows- Type Joi nt

Bel l ows- t ype j oi nt desi gn and i nst al l at i on shal l compl y wi t h EJMA St ds.

The j oi nt s shal l be desi gned f or t he wor ki ng t emper at ur e and pr essur e sui t abl e f or t he appl i cat i on and shal l be not l ess t han 150 psi g i n any case.

3. 2. 8. 4 Fl exi bl e Bal l Joi nt s

Fl exi bl e bal l j oi nt s may be t hr eaded, f l anged, or wel ded end as r equi r ed, and shal l be capabl e of absor bi ng t he nor mal oper at i ng axi al , l at er al , or angul ar movement s or combi nat i on i n accor dance wi t h ASME B31. 1, and

SECTI ON 23 70 03. 00 10 Page 14

ASME BPVC SEC VI I I D1 wher e appl i cabl e. Fl anges shal l conf or m t o t he di amet er and dr i l l i ng of ASME B16. 5. Mol ded gasket s f ur ni shed shal l be sui t abl e f or t he ser vi ce i nt ended.

3. 2. 9 Val ves and Equi pment

Val ves shal l be i nst al l ed at t he l ocat i ons shown, wher e speci f i ed, and wher e r equi r ed f or t he pr oper f unct i oni ng of t he syst em as di r ect ed. Gat e val ves shal l be used unl ess ot her wi se shown, speci f i ed, or di r ect ed.

Val ves shal l be i nst al l ed wi t h t hei r st ems hor i zont al or above. Val ves used wi t h f er r ous pi pi ng shal l have t hr eaded or f l anged ends f or f er r ous pi pi ng and sweat - t ype connect i ons f or copper t ubi ng.

3. 2. 9. 1 Ther momet er Socket

A t her momet er wel l shal l be pr ovi ded i n each r et ur n l i ne c i r cui t i n mul t i c i r cui t syst ems.

3. 2. 9. 2 St eam Ai r Vent s

Vent s shal l be i nst al l ed wher e i ndi cat ed. Di schar ge pi pes f r om t he vent shal l be r un t o a poi nt as i ndi cat ed. Vent shal l be a qui ck- act i ng val ve t hat cont i nuousl y r emoves ai r . Val ve shal l be const r uct ed of cor r osi on- r esi st i ng met al , shal l be desi gned t o wi t hst and t he maxi mum pi pi ng syst em pr essur e, and shal l aut omat i cal l y c l ose t i ght t o pr event escape of st eam and condensat e. Vent shal l be pr ovi ded wi t h a manual i sol at i on val ve.

3. 2. 9. 3 Pr essur e Reduci ng Val ves

Val ves desi gned f or a wor ki ng pr essur e of not l ess t han 125 psi g shal l be pr ovi ded wher ever i ndi cat ed or r equi r ed. Each val ve shal l be i nst al l ed wi t h a st r ai ner , a t hr ee- val ve bypass, and a saf et y val ve.

3. 2. 10 St eam Tr aps

Fl oat t r aps shal l be i nst al l ed wher e i ndi cat ed. Al l ot her st eam t r aps shal l be i nst al l ed wher e i ndi cat ed.

3. 2. 11 Insulation

Thi ckness and appl i cat i on of i nsul at i on mat er i al s f or pi pi ng and equi pment shal l be i n accor dance wi t h Sect i on 23 07 00 THERMAL I NSULATI ON FOR

MECHANI CAL SYSTEMS.

3. 3 FI ELD TRAI NI NG

Conduct a t r ai ni ng cour se f or t he mai nt enance and oper at i ng st af f . The t r ai ni ng per i od of 2 hour s nor mal wor ki ng t i me shal l s t ar t af t er t he syst em i s f unct i onal l y compl et e but bef or e t he f i nal accept ance t est s. The Cont r act i ng Of f i ce shal l be gi ven at l east 2 weeks advance not i ce of such t r ai ni ng. The t r ai ni ng shal l i nc l ude al l of t he i t ems cont ai ned i n t he appr oved Oper at i ng and Mai nt enance I nst r uct i ons as wel l as demonst r at i ons of r out i ne mai nt enance oper at i ons. Submi t 2 compl et e copi es of oper at i on manual s out l i ni ng t he st ep- by- st ep pr ocedur es r equi r ed f or syst em st ar t up, oper at i on, and shut down. I ncl ude i n t he manual s t he manuf act ur er ' s name, model number , ser vi ce manual , par t s l i s t , and a br i ef descr i pt i on of al l equi pment and t hei r basi c oper at i ng f eat ur es. Submi t 2 compl et e copi es of mai nt enance manual s l i s t i ng r out i ne mai nt enance pr ocedur es, possi bl e

SECTI ON 23 70 03. 00 10 Page 15 br eakdowns and r epai r s, and t r oubl eshoot i ng gui des. I ncl ude i n t he manual s pi pi ng l ayout , equi pment l ayout , and s i mpl i f i ed wi r i ng and cont r ol di agr ams of t he syst em as i nst al l ed.

3. 4 ADJUSTI NG, BALANCI NG, TESTI NG AND I NSPECTI NG

Submi t t est r epor t s i n bookl et f or m showi ng al l f i el d t est s per f or med t o adj ust each component and al l f i el d t est s per f or med t o pr ove compl i ance wi t h t he speci f i ed per f or mance cr i t er i a, upon compl et i ng and t est i ng t he syst em. I ndi cat e i n each t est r epor t t he f i nal posi t i on of cont r ol s.

3. 4. 1 Fi el d Test s

Not i f y t he Cont r act i ng Of f i cer 30 days bef or e t he per f or mance and accept ance t est s ar e t o be conduct ed. The t est s shal l be per f or med i n t he pr esence of t he Cont r act i ng Of f i cer . Fur ni sh al l i nst r ument s and per sonnel r equi r ed f or t he t est s. El ect r i c i t y, st eam, and wat er wi l l be f ur ni shed by t he Gover nment . Bef or e t her mal i nsul at i on i s i nst al l ed, t he ent i r e heat i ng syst em, i ncl udi ng al l heat i ng uni t s, val ves and f i t t i ngs, shal l be hydr ost at i cal l y t est ed at 1- 1/ 2 t i mes t he desi gn oper at i ng pr essur e f or a mi ni mum of 4 hour s.

3. 4. 2 Cl eani ng and Adj ust i ng

Af t er hydr ost at i c t est s have been made and pr i or t o t he oper at i ng t est s, pi pi ng shal l be t hor oughl y c l eaned by f i l l i ng t he syst em wi t h a sol ut i on of one pound of caust i c soda or 3 pounds of t r i sodi um phosphat e per 100 gal l ons of wat er . The wat er shal l be heat ed t o appr oxi mat el y 150 degr ees F, and t he sol ut i on c i r cul at ed i n t he syst em f or a per i od of 48 hour s, t hen dr ai ned and t hor oughl y f l ushed out wi t h f r esh wat er . Equi pment shal l be wi ped cl ean, wi t h al l t r aces of oi l , dust , di r t , or pai nt spot s r emoved.

I t i s t he Cont r act or ' s r esponsi bi l i t y t o mai nt ai n t he syst em i n a c l ean condi t i on unt i l f i nal accept ance. Bear i ngs shal l be l ubr i cat ed as r ecommended by t he manuf act ur er . Bel t s shal l be adj ust ed wi t h cor r ect t ensi on, and ot her mi scel l aneous equi pment shal l be adj ust ed t o set t i ng i ndi cat ed or as r ecommended by t he r espect i ve manuf act ur er s.

3. 4. 3 Syst em Oper at i on

Upon compl et i on and pr i or t o accept ance of t he pr oj ect , t he i nst al l at i on shal l be subj ect ed t o such oper at i ng t est s as may be r equi r ed t o demonst r at e t hat t he st eam heat i ng syst em wi l l oper at e as speci f i ed or i ndi cat ed. Test s shal l be conduct ed by a qual i f i ed t est engi neer at such t i mes as di r ect ed. Pr ovi de i nst r ument s, f aci l i t i es, and l abor r equi r ed t o conduct t he t est s. I ndi cat i ng i nst r ument s shal l be r ead at 1/ 2- hour i nt er val s, unl ess ot her wi se di r ect ed. Test s shal l cover a per i od of 3 or mor e hour s f or each syst em t est ed, and t est r epor t s shal l i ncl ude t he f ol l owi ng appl i cabl e speci f i c i nf or mat i on t oget her wi t h concl usi ons as t o t he adequacy of t he syst em:

a. Ti me, dat e, and dur at i on of t est .

b. Fl ow and pr essur e of st eam t o t he i nl et of t he equi pment .

c. Make, model , and s i ze of each pi ece of equi pment .

d. Dr y bul b t emper at ur e ent er i ng and l eavi ng heat i ng and vent i l at i ng uni t s.

e. St at i c di schar ge pr essur e act ual l y obt ai ned, t ot al cf m handl ed, and

SECTI ON 23 70 03. 00 10 Page 16 vol t met er and ammet er r eadi ngs f or f an mot or dur i ng oper at i on.

f . Heat i ng out put f or space- heat i ng equi pment .

g. Capaci t y and di schar ge pr essur e of each pump.

h. Aut omat i c cont r ol sequence and oper at i on.

3. 4. 4 Retesting

Any def i c i enci es r eveal ed dur i ng t est i ng shal l be cor r ect ed and t est s shal l be r econduct ed.

3. 5 FI ELD PAI NTI NG

Pai nt i ng r equi r ed f or sur f aces not ot her wi se speci f i ed, and f i ni sh pai nt i ng of i t ems onl y pr i med at t he f act or y, ar e speci f i ed i n Sect i on 09 90 00

PAI NTS AND COATI NGS.

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