Ithangi Lamanzi Omlilo le-NFPA 22: Izidingo Ezijwayelekile Nezicaciso
Kwadalwa ngo Ngokwamukisa
Ithangi Lamanzi Omlilo le-NFPA 22: Izidingo Ezijwayelekile Nezicaciso
Ithangi lamanzi okuqeda umlilo le-NFPA 22 lilawulwa yiSahluko 14 salesi standard, esibeka imithetho yokwakhiwa, yokugcotshwa, yokuzamazama komhlaba kanye nokuhlolwa kwamathangi okuqeda umlilo asendaweni, ngakho-ke ukucacisa elilodwa kusho ukusho lezo zidingo ngokusobala esikhundleni sokuthenga ithangi lensimbi elijwayelekile. Ukugcotshwa kanye nokufakwa kwesembozo yikho okuhlolwa kakhulu ngoba ithangi lihlala lingasebenzi iminyaka eminingi, ukwakheka kokuzamazama komhlaba kanye nokwakheka kwesakhiwo kufanele kubhalwe phansi kusayithi, futhi amarekhodi okuhlolwa kanye nokuvivinya kufanele kulethwe ukuze i-AHJ isayine. Noma ngabe uqweqwe luyi-GFS, i-fusion-bonded epoxy (FBE) noma i-hot-dip galvanized, indlela ye-NFPA 22 idinga amazinga aqanjiwe, hhayi izichasiso zezinto ezibonakalayo. Abathengi kufanele bathathe iSahluko 14 njengohlu lokuhlola lwezincazelo, hhayi ilebula.
ENorth America kanye nasezingxenyeni eziningi ze-GCC, ithangi lokugcina amanzi okuqeda umlilo lilawulwa yi-NFPA 22, i-Standard for Water Tanks for Private Fire Protection. Isahluko 14 sale standard yilapho ithangi ngokwalo lichazwa khona — ukuthi lakhiwa kanjani, ligcotshwa kanjani, liboshelwa kanjani futhi lihlolwa kanjani. Abathengi abaningi bakhombisa "ithangi le-NFPA 22" futhi bacabanga ukuthi ukuhambisana nemigomo kuyalandela, kodwa bathola ekubuyekezweni ukuthi izinga lokugcoba alizange lichazwe, isibalo sokuzamazama komhlaba sasingekho, noma amarekhodi okuhlolwa awazange afike. Le ndatshana ihamba ngokuthi yini Isahluko 14 ngempela ekudingayo futhi ikuguqulela ohlwini lokuhlola lwe-specification umthengi angaluthumela kunoma yimuphi umkhiqizi wamathangi amanzi e-NFPA 22.
Isahluko 14 se-NFPA 22 Sichaza Ukwakhiwa Kwethangi
Isahluko 14 se-NFPA 22 siyisigaba esibeka imithetho yokwakhiwa, yokuhlanganisa, yesisekelo kanye nezinsiza zamathangi omlilo asendaweni, ngakho-ke siwumgogodla wanoma yisiphi isicaciso esihambisana nomthetho. Lesi sahluko sihlanganisa indlela ithangi elakhiwe ngayo nokuthi yini okufanele ibe khona ukuze lisebenzele ukuvikelwa komlilo kwangasese.
1. Uhlobo lwethangi kanye namajoyinti. Ukwakhiwa okuboshiwe, okushiseliwe noma okunye ukwakhiwa kufanele kuhlangabezane nezinga lokwakha elibekiwe futhi kuchazwe ngokuningiliziwe endaweni.
2. Izisekelo nokubopha. Isisekelo kanye nokubamba phansi kufanele kuklanyelwe isisindo esigcwalisiwe, umoya kanye nesidingo sokuzamazama komhlaba endaweni.
3. Izinto ezisetshenziswayo. Ukudonsa, ukuchichima, izindlela zokungena, izindawo zokuphefumula, izitebhisi namadivayisi ezinga kucaciswa njengengxenye yethangi, hhayi ukwengezwa kamuva.
Isenzo esibalulekile somthengi ukusho Isahluko 14 ngegama encazelweni futhi kudingeke ukuthi umhlinzeki ahlobanise isidingo ngasinye esincane nedokhumenti elethiwe.
Ukumboza Nokufaka Isembozo Kuyinto Ehlolwa Kakhulu
Ngenxa yokuthi ithangi lomlilo ligcwele futhi lingasebenzi iminyaka, izidingo zokumboza nokufaka i-lining ze-NFPA 22 zithola ukubuyekezwa okuseduze kwe-AHJ, futhi izinga kufanele lishiwo, hhayi nje into yokwakha. Ukungasebenzi isikhathi eside kwenza ukuvikelwa kwangaphakathi kube yisici esibalulekile sokuphepha.
· I-AWWA C550 iyireferensi yokumboza kokuvimbela ukugqwala kwangaphakathi nangaphandle emathangini amanzi ensimbi futhi yilokho ababuyekezi abakulindele ukukubona kucashunwe.
· I-ISO 28765 ilawula ukuklanywa kwamathangi e-vitreous-enamel (GFS), ngobukhulu be-enamel obungu-0.25–0.45 mm, ukunamathela okungaphezu kuka-3,450 N/cm² kanye nokuhlolwa kwe-spark ye-1,500 V DC kuphela iphaneli ngayinye.
· I-FBE lining ivame ukukhethwa lapho kudingeka izinga elibhaliwe le-epoxy coating kulo msebenzi.
Umhlinzeki ocaphuna i-"epoxy" noma i-"enamel" ngaphandle kwegama lezinga uhluleka isango lokuqala lokubuyekezwa kungakhathaliseki intengo.
Isici se-NFPA 22 | Okufanele kucaciswe | Kungani kubalulekile |
Izinga le-coating | I-AWWA C550 / ISO 28765 ibiziwe | Into yokuqala yokubuyekezwa kwe-AHJ |
Ukuhlolwa kwenhlansi | 1,500 V DC ngephaneli ngayinye (GFS) | Ubufakazi bokuqina kokumboza |
Ukunamathela | > 3,450 N/cm² (GFS) | Isibopho sesikhathi eside |
Ukufinyelela | Izindlela zokungena zokungena/nokuhlanza | Ukuhlola ngaphandle kokukhipha amanzi ngokuphelele |
Ukuklanywa Kokuzamazama Komhlaba Nesakhiwo Kufanele Kubhalwe Phansi
Amathangi e-NFPA 22 kufanele aklanyelwe isidingo somoya nokuzamazama komhlaba sendawo, ngakho-ke ukubalwa kwesakhiwo — hhayi umdwebo ojwayelekile — kuyinto edingekayo okufanele inikezwe. Indawo yokugcina umlilo ehluleka ekubambeni kwayo noma emgodini wayo ngaphansi komthwalo wesigameko ibi kakhulu kunokungabi nathangi, ngoba idala umuzwa ongamanga wokuvikelwa.
4. Imithwalo yendawo. Umoya (ASCE 7 / EN 1991-1-4 umndeni) nokuzamazama komhlaba (ASCE 7 / EN 1998-4 umndeni) kufanele kushiwo kanye nengozi yendawo.
5. Igobolondo nesisekelo. Isisindo esigcwalisiwe, ukugingqika kanye nohlu lwama-ankha kubalwa endaweni yangempela, hhayi ukukopishwa emsebenzini ofanayo.
6. Uphahla nezinto zokuphuma. Lezi zihlolwa ngokuhlanganiswa komthwalo ofanayo ukuze izinto ezixhunywe kuzo zingabi yizindawo ezibuthakathaka.
Cela iphakethe lokubala elibhekisela esimisweni somthwalo esishiwo; yidokhumenti evumela i-AHJ ukuvala ifayela.
Ukuhlola, Ukuhlola Nokugcinwa Kwamarekhodi Kuyimpoqo
Ukuhambisana ne-NFPA 22 akuphelele ngaphandle kwamarekhodi okuhlolwa nokuhlolwa, ngakho-ke isicaciso kufanele sibadinge njengemibhalo elethwayo, hhayi izethembiso zasesizeni. Ithangi liqinisekiswa, alicatshangwa.
· Ukuhlolwa kwangaphambi kokuthunyelwa nokuhlolwa kwesizeni kwe-coating, amajoyinti nezinto ezihambisana nazo, namalogi agciniwe.
· Ubufakazi bokuhlolwa kwe-hydrostatic kanye ne-spark, ikakhulukazi ukuhlolwa kwe-spark kwephaneli ngalinye kwe-GFS.
· Ukubalwa komthamo we-as-built okuhlukanisa umthamo osebenzisekayo kusuka kumthamo ophelele, kanye nokunikezwa kwe-dead leg kanye ne-anti-vortex allowance kushiwo.
Lawa marekhodi yiwona afundwa yi-AHJ kanye nomshuwalensi womlilo ngempela; ithangi elingenawo lawa marekhodi alikho "ngokuhambisana ne-NFPA 22" empeleni.
Ukucacisa Ithangi Elilandelayo I-NFPA 22: Uhlu Lokuhlola
Ukuguqula Isahluko 14 sibe isicaciso sokuthenga kulula uma umthengi ebhala imigomo eqanjiwe kanye nemibhalo edingekayo kusukela ekuqaleni. Uhlu lokuhlola olungezansi yilokho esikuthumelayo kumaphrojekthi acacisa ithangi lamanzi omlilo le-NFPA 22.
7. Shono i-NFPA 22 Isahluko 14 ngegama njengesigaba esilawulayo sethangi.
8. Shono izinga lokumboza (AWWA C550, ISO 28765 noma i-FBE ebhaliwe).
9. Funa amarekhodi okuhlolwa kwe-spark kanye nokunamathela kwamaphaneli aboziwe.
10. Funa izibalo zomoya nokuzamazama komhlaba eziqondene nesiza (ASCE 7 / EN 1991-1-4 / EN 1998-4).
11. Funa ukubalwa komthamo osebenzisekayo wangemva kokwakhiwa kanye nengqondo yezinga/alamu.
12. Funa ukufinyelela kwe-manway kanye nezinhlinzeko zokuhlukanisa zokulungisa.
13. Funa iphakethe eliphelele lamarekhodi okuhlola nokuhlolwa ukuze i-AHJ isayine.
Umhlinzeki owamukela lolu hlu lokuhlola ngaphandle kwemibandela ngumhlinzeki ongakwazi ukuletha ithangi elihambisana nemithetho.
Izinketho Zezinto Ngaphansi Kwe-NFPA 22
I-NFPA 22 ayiphogi into eyodwa yethangi, ngakho ukukhetha phakathi kwe-GFS, i-FBE kanye ne-galvanized kwenziwa ngesimo sezulu, imibhalo yokumboza kanye nezindleko, konke ngaphakathi kweSahluko 14. Ngayinye isebenzela iphrofayili ehlukile yephrojekthi.
· GFS eboshiwe. Uqweqwe olubushelelezi olungasebenzi (Ra < 0.8 µm) lwamadiphozithi amakhulu asezindaweni ezifudumele/ezifudumele kakhulu okulula ukuhlola kuzo.
· FBE eboshiwe. I-epoxy lining ebhaliwe lapho iphrojekthi idinga izinga le-epoxy eliqanjiwe.
· I-hot-dip galvanized. Ukuvikelwa kwegobolondo le-zinc olubiza kancane lapho ukuthintana okuqondile kungakhathazeki.
Impahla | Inkomba yokumboza | Iphrofayela engcono kakhulu |
GFS | ISO 28765 | Endaweni efudumele/efudumele kakhulu, ehlolakalayo |
FBE | I-epoxy ebhaliwe (umongo we-AWWA C550) | Umsebenzi wokumboza obhaliwe |
I-Galvanized | I-Zinc | Okubiza kancane, okungathintani |
Icala lePhrojekthi
Izinkomba zethu zamanzi omlilo aphesheya zihlanganisa amathangi omlilo ambozwe nge-FBE akhiwe ngokomongo we-NFPA 22.
Isifinyezo seCala lePhrojekthi
Iphrojekthi | Umkhiqizo | Umthamo | Ukuhlelwa | Ukuqedwa |
Amanzi Okucisha Umlilo e-Saudi Arabia | Ithangi Elimbotshwe nge-Epoxy (FBE) | 492 m³ isiyonke | amathangi angu-2 | 2024-11 |
Isithenjwa sase-Saudi Arabia iyingxenye yamathangi okuqeda umlilo e-fusion-bonded-epoxy (FBE) anengqikithi engu-492 m³, aqedwa ngo-2024-11. Kucashunwa njengethangi lokuqeda umlilo eline-FBE-coated kumongo we-NFPA 22, okubonisa indlela yedokhumenti ye-coating elindelwe amaphrojekthi aseNyakatho Melika nase-GCC: amagobolondo amabili ahlukanisiwe, i-epoxy lining efakwe efektri, kanye nokuqinisekiswa kwe-coating okudingwa ukuhlolwa kweSahluko 14. Umqondo ofanayo wokugcina okuhlukanisiwe kanye nephakethe ledokhumenti kuyasebenza ethangini elilodwa elikhulu lamanzi okuqeda umlilo le-NFPA 22.
Amandla Obunjiniyela be-Center Enamel
UCenter Enamel (Shijiazhuang Zhengzhong Technology Co., Ltd) isungule futhi yakha amathangi okugcina anezibophezelo kusukela ngo-2008. Njengomkhiqizi wokuqala wamathangi ensimbi ehlanganiswe nengilazi (GFS) eChina, inkampani inamalungelo obunikazi acishe abe ngu-200 ahlobene ne-enamel, ikhiqiza cishe amapuleti ensimbi angu-300,000 ahlanganiswe ne-enamel ngonyaka, isiqedile amaphrojekthi afakiwe angaphezu kuka-30,000 futhi ihlinzeka ngamathangi ayo emazweni angaphezu kuka-100. Isizinda esisha sokukhiqiza esingu-150,000 m² sengezwe ukukhulisa umthamo wokukhiqiza, futhi amathangi angawodwa ahlinzekwa afinyelela ku-60,000 m³. Ukukhiqiza kusebenza ngaphansi kwe-ISO 9001 ne-ISO 45001, ngesitifiketi somkhiqizo esihlanganisa i-NSF/ANSI 61, WRAS, FDA, LFGB, CE (EN 1090), ISO 28765, FM, BSCI ne-EUROCODE, futhi ukuklama kubhekiselwa ku-NFPA 22, NFPA 20, AWWA D103-09, AWWA C550, ASCE 7, EN 1991-1-4, EN 1998-4, ISO 28765, EN 1090, API 650, AWWA D108 ne-EN 12845 lapho uhlelo ludinga khona.
Ngomsebenzi wamanzi okuqeda umlilo we-NFPA 22, inkampani ihlinzeka ngamathangi e-GFS, FBE kanye namathangi e-galvanized aboshiwe ane-Chapter 14 coating, imibhalo yokuzamazama komhlaba nokuhlolwa, futhi ihlinzeka ngamarekhodi okuhlolwa adingekayo ukuze i-AHJ kanye nomhlinzeki womshuwalense babuyekeze.
Imibuzo Evame Ukubuzwa
Umbuzo 1: Yini ehlanganiswa yi-NFPA 22 Isahluko 14?
A1: Ibeka imithetho yokwakhiwa, yokuxhunywa, yesisekelo, yokubopha, yezinto ezisetshenziswayo, yokumboza nokuhlola kwamathangi omlilo asendaweni — isigaba esichaza ithangi ngokwalo.
Q2: Iyiphi indinganiso yokumboza okufanele ishiwo ku-NFPA 22?
A2: I-AWWA C550 yokumboza kwamathangi ensimbi, i-ISO 28765 yokumboza kwe-GFS nge-enamel, noma indinganiso ye-FBE epoxy ebhaliwe; indinganiso kufanele ishiwo, hhayi nje into esetshenziswayo.
Q3: Ingabe ukuklanywa kokuzamazama komhlaba kuyadingeka kumathangi e-NFPA 22?
A3: Yebo, izibalo zomoya nokuzamazama komhlaba eziqondene nendawo ezibhekisela endinganisweni yomthwalo esebenzayo (i-ASCE 7 / i-EN 1991-1-4 / i-EN 1998-4) ziyimisebenzi edingekayo okufanele yethulwe.
Q4: Yimaphi amarekhodi okuhlola okufanele ethulwe?
A4: Amarekhodi okuhlola ukumboza nokuxhunywa, amarekhodi okuhlola ngamanzi nangokuhlola nge-spark iphaneli ngayinye (1,500 V DC ye-GFS), kanye nokubalwa komthamo osebenzisekayo njengoba kwakhiwe.
Q5: Ingabe i-NFPA 22 iyayiphogelela into yokwakha ithangi?
A5: Cha; i-GFS, i-FBE kanye ne-hot-dip galvanized konke kuyamukeleka ngaphakathi kweSahluko 14, kukhethwa ngokwesimo sezulu, imibhalo yokumboza kanye nezindleko.
Q6: Umthamo osebenzisekayo wethangi lomlilo uchazwa kanjani?
A6: Umthamo ophakathi kwesixwayiso sezinga eliphansi nokuchichima, ngaphandle komgudu wokudonsa ongenalutho kanye nesibonelelo sokulwa nomoya ojikelezayo — uhlukile kumthamo ophelele.
Q7: Ingabe ithangi lingahlolwa ngaphandle kokukhipha amanzi agciniwe?
A7: Yebo, lapho ukufinyelela kwe-manway kanye nezinhlinzeko zokuhlukanisa kuvumela ukuthi igobolondo elilodwa lingeniswe noma livalwe nge-valve kuyilapho amanye ephethe umthamo odingekayo.
Ithangi lamanzi omlilo le-NFPA 22 lichazwa yiSahluko 14: shono izinga lokumboza (AWWA C550, ISO 28765 noma i-FBE ebhaliwe), dinga izibalo zesimo sokuzamazama komhlaba nesakhiwo esiqondene nendawo, futhi ufune amarekhodi okuhlola nokuhlolwa avumela i-AHJ ukuthi ivale ifayela. Khetha i-GFS, i-FBE noma i-galvanized ngesimo sezulu kanye nesidingo semibhalo, konke ngaphakathi kwesilinganiso. Kucacise njengohlu lokuhlola, hhayi ilebula, futhi ithangi lizophumelela ukubuyekezwa futhi lihlale lisebenza emashumini eminyaka adingwa yindawo yokugcina umlilo.
Khuluma Nonjiniyela
Okwethangi lamanzi okuqeda umlilo le-NFPA 22, sithumelele umthamo osebenzisekayo odingekayo, ingozi yomoya nokuzamazama komhlaba yendawo, ukukhetha i-coating (GFS/FBE/galvanized), kanye nezidingo zedokhumenti ze-AHJ. Sizobuyisela uhlu lokuhlola lweSahluko 14, amarekhodi e-coating ne-spark-test, izibalo zesakhiwo esihlukile sendawo, ucwaningo lomthamo wangemva kokwakhiwa, kanye nephepha lethangi elinezinhlinzeko zokuhlukanisa ne-level-alarm.
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