CHAPTER12

1 120 1. 0 Scope of Gas 01. 1(A)Covera ge of Pipi ng Sy ageof piping systems shal lext end fro mthe point of deli v-ery to theap pl ianc econ ne ctio ns with ea ch ga sutil iza-tiondev other than un diluted liq uef ied petr oleumgas systems, the po intof deli very shall beconsidered theoutl et of the servic emeter asse mbly, or the outlet of theserviceregulat or or service shutoff va lve wher eno meteris pr ovided. For undiluted lique fie dpetroleum ga ssys -tems, the poi nt of de live ry shall be consider ed the outletof the final pressure regula tor,exclu sive oftheline gas reg -ulat ors, in the system where no meter is ins reamet er is inst al led the point of deliver ysha ll be the out-letof the met er.[NFP A54 -12 1(A) ]12 01. 2(B)Pipi ng Sy st em Re qu irement pin gsystems requ irement sshall include design, mater ial s,com pone nts ,fabric ations,assemb ly,ins talla tion, testing,ins pection , oper ation, and maintenance. [NFPA54 (C )]12 01.

2 3(C)Appli cati scode shal lnot apply tothe foll owing (refer encestanda rdsforsom eof wh ich ap-pea rin Ch apt er 14 [NF PA54 -12 ]:(1) Por tabl eLP -Gas applianc esof all typesthat are notconnec ted toafixed fue lpi ping system .(2) Insta llat ion of farm applianc es andequi pme nt suchas bro od ers, deh ydrat ors, dryers, and irriga tio nequipm ent use dfor agricultural purposes.(3) Raw material (feedstock) applicat ions, exce pt forpipi ng to speci alatmosphe re ge nera tors.(4) Oxygen-fuel gas cut ting and welding syste ms.(5) Indu strialgas appli cation sus ing ga ses such as ace ty-leneand acety len ic comp ou nds ,hydr ogen, ammo -nia ,carbon monoxi de, oxyge n, and ni trogen.(6) Pe trol eum refi ner ies, pipe line compre ssor or pump -ing stati ons, loa di ng ter min als, comp ou nd ing pl ants,refinery tan k farms , and natural gas pr oc essi ngpla nts .(7) Largeint egrat ed chem ica lpla nts orpo rti ons of suchplant swh er eflam ma bl eorcom bus tible liqui ds orga ses are pr oduce dby chemical reactions or used inchem icalreacti ons.)

3 (8) LP- Gas instal lations at utility gas plants.(9) Lique fied natura lga s(LNG) insta lla tions.(10) Fuel gas pipin g in electri c uti lit y powe r plant s.[NF PA 54 -09 (10) ](11) Proprietary item sof equipment, appara tus, or in-str ume nts such asga s-g enera ting sets ,comp res sors ,and cal ori mete rs.(12) LP-Gas appli anc esfor va por iza tion, gas mix ing, andga sma nuf act uri ng.(13) LP -Ga spipingforbuildingsun der const ructi on orrenovat ions tha tar enot tobecom epart of the per -ma ne ntbuildingpi pi ng system that is,tempo raryfixed pi ping for bui ldi ng hea t.(14) Instal lationofLP-G as systems forrai lro ad switchheat ing.(15) Inst allation of LP -Gas and com pressed natural gassyste ms on ve hic les.(16) Gaspiping,me ters,gas-pressureregulators, and otherappurtenances usedby the servin ggas supplier indis -tribut ion of gas, ot her tha nund iluted LP-Ga Gene ra reg ulation softhis chapter shall go vern the install ationof fue lgaspi pin ginor in co nn ec tion withan yabu ild ing ,struct ur eorwithintheproper tylines ofan yprem ises uptofive (5)psi (34.)

4 5kPa ), ot her than servi ce pipe. Fuel oil pip -ing syst em sshal lbe inst al ledin accordanc ewith NFPA De fini tions .For the purpose sof thi scode, the se de finitions shall apply tothi scha pte r. Ce rtai nterm s, phrase s, words, and their deriva-tives shallbe interpretedas set for th in this sect ion,prov ided,how ever, that whenever the wor ds ga smeters appear, theysha ll be const rue dtoal so mean va lve sand those devices re-qui redfor the regul at ion of pr essure and the measurement ofna tur al gas be ing dis pe ns ed forany bui ldin g, struc tur e,orpr em ise Applian ce Fuel Conne cto r An asse mb lyoflisted sem i-ri gi dor flexi ble tubing and fitti ngs to carry fuelbe tween afue l-pi pi ng out let and afue l-burning Bondi ng Jumpe r Arel iabl econductor to ensurethe requi red el ect rical conduct ivi tybet ween metal parts re-qui redto be el ect rical lyconnect ed. [NFPA 70 ]12 Fue lGas Nat ura l, ma nufact ured, liquefied petro-leum ,or ami xt ure of the 03.

5 4 Gas Pi ping An yins tallat ionofpi pe ,val ve s, orfitti ng sthatis usedto conv eyfue lga s,installe donanypr em-ises or in any buil di ng, but shal lnot include:(1)Any por tion of the servi ce pi pi ng.(2)An yapp rovedpipingconnect ionsix(6)feet (1, 82 9mm)or less in lengt hbe tween anexist ing ga soutlet and agasappl iance in the same room wi th the Ga s-Pi pi ng System Any arrangem ent ofga spi p-ing or regul ator saf terthe poi nt of del ivery and each arrange-ment of gas pi pi ng servi ng abui ldi ng, str ucture, or premises,whet her indi vidua llymet ere dor not .12 Groundi ng Electrode Adevi ce that establishesan el ect rica lconnec tion tothe ea EL PIPI NGUNIFORM PLUMBINGCODE171 UNIFORM PLUMBINGCODE1721203. 7 Liquef ied Pet ro leu mGa s(LP G) Facilitie s Liquefied pet rol eum gas (LP G) fac ilities me ans tanks, con-tainers, container valves, regulati ng equi pment, mete rs,and/or appurt ena nc es for the stora ge and supply of liquef iedpetroleum ga sfor any building, str ucture, or ov ision for Lo cation of Poi nt of Delive ry Th eloca tion ofthe po intofde liv ery shall be acc epta ble totheserving gas suppl ier.

6 [NF PA 54 ]120 3. 9 Quick -Dis con nec tDevic e Ahand-o pe rat edde-vice tha tprovi des ameans for connecting and disc onnectingan applian ce or anappl iance conn ector to agas supply andthat is equipped wi th an automa tic mea ns to shut off the gassupply when the de vice is disc onnec Se rvi ce Piping The pi pi ng and equipment be-tween the str eet ga smain and the gas piping system inlet tha tis installed by, and is under the control and maintena nce of,theserving gas suppl Trans ition Ga sRise r Any list edor approve dsec tion or secti ons of pipe and fittings use dto convey fuelgas and ins tal led in agas pipin gsystemforthepu rpose ofproviding atransit ion from below ground to above Inspe ct tion No tifica tion .Up on com pl eti on of theinstallation, alter ation, or repair of anygas pi pi ng, and pri orto the use the reof ,the Authority Having Jurisdiction sha llbenotified that suc hgas piping is ready for eExcav ationsrequi red for the in-sta llati on of un dergro und pipingsha ll be kept ope nuntil suchtime as the pipin gha sbeen inspect ed and approved.

7 If anyWheresuc hpiping is cover ed or concea led be fore such ap -proval, it sha ll be expose dupon the direc tion of the Author -ityHaving Juri sdic Ty pe of Inspect ion Aut hori ty Havi ng Ju-ris diction shall make the followi ng inspecti ons and ei thershall appr ove tha tportion of the work ascomplete dor shallnotify the pe rmit holder whe rein the same fails to complybein accordan cewi th this Piping Inspect sinsp ec -tion sha ll be made af terallgas pi pi ng aut hori zed by thepe rmit ha sbee ninsta lle dand be fore anysuch pi pi ng hasbeen cove redor conc ealed or anyfixtur eor appl ianceha sbe en attac hed the ret o. This inspect ion shall include ade termina tion that the ga s-piping size ,mater ial, and in-stal lation me et the requirements of this 2 Fina lPi ping Ins pe inspe ctionshall be ma de af ter al lpipi ng author ize dby the perm ithas been installed and after allport ionsthereof that are tobe cove red or con ceale dareso conc ealed and before anyfixtur es, app lian ce, orshutof fvalve has been attach edther eto.

8 This inspection shall be in acc ordanc ewith Se c-tion 121 Test gauges use din conducting tests shallco mplybe in acco rdan cewith Sect ion 31 , Ins pec tion Wa ive dIn ca ses whe re the work au -thorized by the per mit consists of aminor installation of ad-ditional pi pi ng topiping alrea dy conne cted to agas meter, thefor egoi ng inspec tions sha llbe per mi tted to be wa ive dat thedi scre tion of the Author ityHavi ng Juri sdiction. Inthis event,theAu thori ty Hav ing Jurisdi ctio nsha ll mak esuc hinsp ectio nas dee me dadvi sabl einor der to be assured that the work hasbee nperfor medinaccordanc ewi ththe intent of this Ce rti ficat eof Ins pe Iss ua nc ,Whereupon final pi pi ng inspection,the inst al lation isfound tocom pl ybe in ac cordancewith thepr ovis ions of this code, acertific ate of inspe ction shall be per -mittedtobe issued by the Aut hori ty Having Jurisdi Suppl of the cer tifica te of suc hfinal pi ping inspect ion shal lbe issued tothe serving gas sup -pl iersuppl yi ng gas tothe prem Unl awf ul.

9 It shal lbeunl awfu lforan yaservinggas suppl ier, or pe rson furni shi ng ga s, toturn on or ca use tobeturnedon ,anyafuelgasoranyagas meter or meters,unt ilsuch cer tifica te of finalinspe ction ,asherei nprovid ed ,hasbee Authori ty to Re nde rGa sServ Aut horize dPers onne shal lbe unl awful foran yape rson, fir m, or co rpor ati on, except ingan au tho rizedage nt or em pl oyee of ape rson, firm, or corpora tion engagedinthe bus iness offur nishingorsup plyinggas and whos eserv -icepipes supplyorco nnect wi ththepa rti cul ar prem ises ,totur non orreco nn ect gas serviceinor onanyaprem ises wh ereand when gas ser vi ceis, atthe time, not being rende Outl shal lbe unl awful totur non or connectgas in oronanyapremi ses unles salloutlets are prop erlyandsecu rely con nec ted to gasapp lia nce sorca pp ed orplu gg edwi thscr ew joi nt Authori ty to Di sconnec Di sc onne Aut hori tyHavi ng Jurisdic -tio nor the ser vinggas sup pl ier is he reby au thori zed to dis -co nnect anyga spi pingor ap pli anc eorboth thatsha ll befoun dnottoconform tocomplythereq uiremen tsofthi scodeorthat ar efoun ddef ectiv ean dinsuch con dit ion as to en -dange rlife or pr ope eresuc hdi sconn ection hasbeen made,anotic eshal lbe attac hed tosuch ga spipi ng or appliance orboth that shallstatethesame has been discon nec ted, togetherwi ththe reasons thereof.

10 120 Ca pped Outl sha ll be unl aw ful to removeordisco nnect an ygas pipingorgas ap pliance wi tho ut cap -pingorpluggi ng with ascrewjoint fitti ng, the outle tfromwhi ch said pi pe or appl iance wa srem oved. Outle ts to whichgas appl ianc es are not connect ed shal lbe left capped, gas-tight on anyapi pi ng syst em tha thas be en inst al led, altered,or repai ion :Whe nWher ean approved listed qui ck- discon -nec tdevi ce PIPING120 porary Us eof Ga .1 Gen era re tempora ry use of gas isde sir ed andthe Author ityHavi ng Jurisdiction de ems the use nec essary, aper mi tsha ll be per mitted to be issued for such use for ape -riod oftime not toexc ee dthat desi gna ted by the Au thori tyHavi ng Jurisdict ion, pro vid ed thatsuch gas-pi ping sys temothe rwiseconf or ms tois inaccordance wi ththereq uirementsof this code regar ding ma teria l, sizing, and safe Gas- Pi ping Sys temDe sign, Mat erials, andCompone nts .120 Pi ping Pl Inst all at ionofPip ingSyste erequir edby the Aut hority Having Jurisdi ction, apipingsket ch or plan shall be pre pa redbefor epr ocee ding withthe insta llati on.