Izinga le-API Lamathangi Ophahleni Oluntantayo: Umhlahlandlela Wezobuchwepheshe
Kwadalwa ngo 2025.08.14
Izinga le-API Lamathangi Anophahla Oluntantayo: Umhlahlandlela Wezobuchwepheshe
Amathangi anophahla oluntantayo ayizimpahla ezibalulekile embonini kaphethiloli nezindiza, enzelwe ukunciphisa ukulahleka kokushintsha kwaba yigesi kwezinto eziyingozi (VOCs). Ngoba la mathangi aqukethe izinto eziyingozi, ukwakhiwa kwawo, ukwenziwa kwawo, kanye nokugcinwa kwawo kulawulwa ngokuqinile izindinganiso ze-American Petroleum Institute (API).
Ukuqonda uhlaka lwe-API kubalulekile kubaphathi bezindawo kanye noonjiniyela: I-API 650 ichaza izidingo zokuklama nokwakhiwa kwamathangi amasha, kanti i-API 653 iyisebenzela njengezinga eliqinisekile lokuhlola, ukulungisa, nokwakha kabusha amathangi asevele esetshenziswa.
1. I-API 650: Izidingo Zokuklama Nokwakhiwa
I-API 650 iyona "ibhayibheli" lokwakhiwa kwamathangi amasha okugcina. Lapho ubhekene namathangi anophahla oluntantayo, onjiniyela kufanele bahambe ngezithasiselo ezithile ezichaza izidingo zemishini nezokuphepha zezakhiwo zophahla.
Isithasiselo C: Ophahla Oluntantayo Ngaphandle (ama-EFR)
Isithasiselo C sibhekana ngqo nokuklama nokwakhiwa kwemishini yophahla oluntantayo ngaphandle. Lolu phahla lubhekana ngqo nezakhiwo. Iziqondiso eziyinhloko zobunjiniyela esithasiselweni C zihlanganisa:
● Izinkambiso Zokuntanta: Uphahla kumele luhlale lunyantula noma ngabe izindawo ezimbili eziseduze (amaphampu) zivulekile.
● Imithwalo Yemvelo: Imiklamo kufanele ibheke imvula enkulu nemithwalo yeqhwa, okudinga izinhlelo eziyinkimbinkimbi zokudonsa amanzi.
● Izinhlelo Zokubopha: Izidingo zezibopho eziyinhloko nezesibili ukuze kuncishiswe ukukhishwa kukagesi emgqeni.
Isengezo H: Uphahla Olungaphakathi Olujikelezayo (IFRs)
I-Annex H ihlanganisa i-Internal Floating Roofs, ezitholakala ngaphakathi ethangini elinophahla oluqinile. Ngenxa yokuthi uphahla oluqinile luvikela umoya nemvula, imiqathango yokuklama ye-IFR ihluke kakhulu kwi-EFR.
● Ukulawulwa Kwesikhala Somhwamuko: Kugxilwe ekunciphiseni isikhala somhwamuko phakathi kwe-IFR nophahla oluqinile.
● Izidingo Zezinto Ezisetshenziswayo: Kuvame ukusebenzisa i-aluminium noma izakhiwo zensimbi ezilula njengoba uphahla luvikelwe emithwalweni emikhulu yomoya.
● Ukungenisa umoya: Izidingo eziqinile zezimbotshana ukuvimbela ukuqoqana kwezinhlanganisela zegesi eziqhumayo ngaphansi kophahla oluqinile.
2. Ukuqhathanisa: Uphahla Oluhlanganayo Ngaphandle vs. Ngaphakathi
Isici | Uphahla Oluhlanganayo Ngaphandle (EFR) | Internal Floating Roof (IFR) |
Inkomba ye-API | I-API 650, Isithasiselo C | I-API 650, Isithasiselo H |
Imvelo | Ibhekene nomoya | Ivalelwe (ngaphansi kophahla oluqinile) |
Ukudonsa amanzi | Kuyinkimbinkimbi (imibhobho ejikelezayo/evumelayo) | Minimal (Ivikelwe uphahla oluqinile) |
Inzuzo Eyinhloko | Umthamo Omkhulu, Ukufinyelela Kalula | Ukugcinwa kwe-VOC, Ukuvikelwa Kwesimo Sezulu |
Ukugcinwa | Phezulu (Ukugcinwa kophawu nomjikelezo) | Phansi (Indawo Evikelwe) |
3. I-API 653: Ukuhlolwa Nokugcinwa
Ngenkathi i-API 650 ilawula ukwakhiwa okusha, i-API 653 yiyona ejwayelekile yomjikelezo wonke we-tank. Ichaza ukuthi ungaphatha kanjani izimpahla ezikhona ukuze uqinisekise ukuthi zihlala zihambisana futhi ziphephile.
● Ukuhlolwa Okujwayelekile: Izinyanga ezimbili ukuhlolwa okubonakalayo ngabasebenzi abasebenzayo (akudingi abahloli abaqinisekisiwe).
● Ukuhlolwa Kwangaphandle: Kwenziwa njalo eminyakeni emi-5 ngumhloli we-API 653 oqeqeshiwe; i-tank ingahlala isebenza.
● Ukuhlolwa Kwangaphakathi: Kudinga ukukhipha i-tank ekusebenzeni ukuze kwenziwe ukuhlolwa okuphelele kwangaphakathi kwe-shell, phansi, kanye nesakhiwo se-roof esintantayo.
Inothi yezobuchwepheshe: Izinsolo ze-API 653 zibalulekile ekutholeni ukugqwala kwe-"Critical Zone"—indawo lapho isikhumba sethangi lihlangana khona ngezansi—okuyindawo evamile yokwehluleka kwamathangi ensimbi.
4. Izinto Ezibalulekile Zobunjiniyela
Ukubalwa Kwe-Buoyancy
Inani eliyinhloko lokuphepha kwanoma yiluphi uphahla oluntantayo yi-Net Buoyancy Force (Fb). Uphahla kumele lwakhelwe ukuze umthamo owenziwe ngamaphonto unikeze amandla aqinisekile aphezulu, noma ngisho nalapho kubalwa:
1. Isisindo esingenamphuphutheki sesakhiwo sethangi lensimbi.
2. Isisindo sesistimu yesitampu.
3. "Umthwalo Wemvula Womklamo" (isisindo samanzi/iqhwa aqongekile).
Uma i-Fb ingeyona ey positive, uphahla lungaba sengcupeni yokucwila, okungaholela ekukhishweni komkhiqizo okuyingozi kanye nezingozi zomlilo.
Ubuqotho Besitampu
Umgodi phakathi komkhawulo ophambili ophambili ophambili kanye nodonga lwethangi uyindlela eyinhloko yokukhishwa kwe-VOC. Izindinganiso ze-API zidinga ukuthi:
● Izitampu eziyinhloko kumele zigcine ukuxhumana okuphumelelayo nodonga.
● Izitampu zesibili zivame ukudingeka ukuze kuhlangatshezwane nezimfuno zemvelo ukuze kuncishiswe ukukhishwa kwe-"rim loss".
● Imigodi yesitampu kumele ilinganiswe futhi irekhodwe ngesikhathi sokuhlolwa njalo kwe-API 653.
5. Imibuzo Evame Ukubuzwa (FAQ)
Q: Ngingasebenzisa i-API 650 ukulungisa ithangi elikhona?
A: Cha. I-API 650 ingeyokuklanywa nokwakhiwa kwamathangi amasha kuphela. Ukulungisa, ukuguqula, noma ukwakha kabusha ithangi elikhona, kufanele unamathele ezimfuno ze-API 653.
Umbuzo: Yini ingozi enkulu ethangini elingaphandle eliphambili (EFRT)?
Impendulo: Ingozi eyinhloko "ukuquleka kophahla" okubangelwa ukwehluleka kohlelo lokudonsa ngesikhathi sesiphepho, noma umlilo wesitembu obangelwa ukuduma kwezulu. Imiklamo yesimanje isebenzisa izimbotshana ezihambayo eziqinile, ezinemigqomo eminingi yokudonsa kanye nezinhlelo zesitembu zesibili ukunciphisa lezi zingozi.
Umbuzo: Ingabe izindlu ezingaphakathi eziphambili zingcono kunezingaphandle?
A: "Kungcono" kuncike ekusetshenzisweni. Ama-IFR angcono kakhulu ekulawuleni ukukhishwa kanye nezindawo ezibandayo (ikhephu elinzima/imvula) ngoba uphahla oluqinile luvikela ingxenye yangaphakathi. Ama-EFR avame ukukhethwa ezindaweni ezinkulu kakhulu lapho uphahla oluqinile lungabiza kakhulu noma kunzima ukwakhiwa.
Amathangi anophahla oluhlanganayo ayizinhlelo zobunjiniyela eziyinkimbinkimbi lapho ukuthobela i-API kungewona okukhethwayo—kungumgomo oyisisekelo wokuphepha nokunakekelwa kwemvelo. Noma ngabe udizayina ukufakwa okusha ngaphansi kwe-API 650 noma uphatha ubuqotho besakhiwo esidala ngaphansi kwe-API 653, ukuthobela lezi zindinganiso kuqinisekisa ukumelana nesakhiwo, kunciphisa ukukhishwa kwe-VOC, futhi kuqinisekisa impilo ende, ephephile yokusebenza yengqalasizinda yakho yokugcina.
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