Uphahla Oluntantayo Olunezitezi Ezimbili Lwamathangi Okucubungula i-LPG: Izimiso Zobunjiniyela Nokuphepha
Kwadalwa ngo 2025.08.11
Uphahla Oluntantayo Olunezitezi Ezimbili Lwamathangi Okucubungula i-LPG: Izimiso Zobunjiniyela Zokuklama Nokuphepha
Iphahla elintanta elinemigqomo emibili (double-deck floating roof) liwuhlelo oluthuthukisiwe, olunamandla kakhulu lophahla oluntanta ngaphandle, olwakhelwe amathangi amakhulu amile agcina noma acubungula uketshezi, aqukethe ama-hydrocarbon avuthayo, ama-liquid petroleum gases (LPG) condensates, kanye nezingxenye ezilula zika-petrochemical. Ngokungafani nezinye izinhlobo zophahla olunomgqomo owodwa noma i-pontoon, uphahla olunemigqomo emibili lunabela phezu kwalo lonke ulwelo olungaphezulu, lunamakhava amabili ensimbi aqhubekayo (amapuleti angaphezulu nangaphansi) ahlukaniswe inethiwekhi enkulu yezindawo ezinomoya ezingangeni manzi, ezihlukaniswe ngamagumbi. Lo mklamo unikeza ukuntanta okukhethekile, ukugcina ukushisa, kanye nokuqina kwesakhiwo ukuze kuncishiswe izingozi zokusebenza ezindaweni ezinamandla zamakhemikhali nawokucubungula amandla.
Izinselelo Zokusebenza Ekucubungulweni Nokugcinwa Kwe-Hydrocarbon ne-LPG
Izikhungo zokucubungula eziphethe ama-VOC (ama-volatile organic compounds) nezingxenye eziwuketshezi ezilula zibhekana nezingqinamba ezinzima zobunjiniyela:
● Umfutho Ophakeme Womhwamuko Nokulahleka Okubangelwa Ukuhwamuka: Ama-hydrocarbon alula nezingxenye ze-condensate zihwamuka ngokushesha lapho izinga lokushisa lishintsha, okuholela ekulahlekelweni okukhulu komkhiqizo kanye nokungathobeli imithetho yemvelo. ● Ukwanda Kwe-Flammable Headspace: Amathangi avamile anophahla olungaguquki adala indawo yomhwamuko ehlala njalo (i-ullage) evame ukuhlangana nomoya, yakhe ingxube yegesi evuthayo evutha ngenxa yokukhishwa kukagesi omile noma umbani. ● Ukushisa Okusuka Elangeni Nemiphumela Yokubila: Imisebe yelanga enamandla ishisa okuqukethwe ethangini, isheshise ukukhiqizwa komhwamuko, ukulahleka kokuphefumula kwethangi, kanye nokubila kwendawo uma ukufakwa kwe-thermal insulation kunganele.
● Umfutho Ophakeme Womhwamuko Nokulahleka Okubangelwa Ukuhwamuka: Ama-hydrocarbon alula nezingxenye ze-condensate zihwamuka ngokushesha lapho izinga lokushisa lishintsha, okuholela ekulahlekelweni okukhulu komkhiqizo kanye nokungathobeli imithetho yemvelo. ● Ukwanda Kwe-Flammable Headspace: Amathangi avamile anophahla olungaguquki adala indawo yomhwamuko ehlala njalo (i-ullage) evame ukuhlangana nomoya, yakhe ingxube yegesi evuthayo evutha ngenxa yokukhishwa kukagesi omile noma umbani. ● Ukushisa Okusuka Elangeni Nemiphumela Yokubila: Imisebe yelanga enamandla ishisa okuqukethwe ethangini, isheshise ukukhiqizwa komhwamuko, ukulahleka kokuphefumula kwethangi, kanye nokubila kwendawo uma ukufakwa kwe-thermal insulation kunganele.
● Umfutho Ophakeme Womhwamuko Nokulahleka Okubangelwa Ukuhwamuka: Ama-hydrocarbon alula nezingxenye ze-condensate zihwamuka ngokushesha lapho izinga lokushisa lishintsha, okuholela ekulahlekelweni okukhulu komkhiqizo kanye nokungathobeli imithetho yemvelo. ● Ukwanda Kwe-Flammable Headspace: Amathangi avamile anophahla olungaguquki adala indawo yomhwamuko ehlala njalo (i-ullage) evame ukuhlangana nomoya, yakhe ingxube yegesi evuthayo evutha ngenxa yokukhishwa kukagesi omile noma umbani. ● Ukushisa Okusuka Elangeni Nemiphumela Yokubila: Imisebe yelanga enamandla ishisa okuqukethwe ethangini, isheshise ukukhiqizwa komhwamuko, ukulahleka kokuphefumula kwethangi, kanye nokubila kwendawo uma ukufakwa kwe-thermal insulation kunganele.
Ubunjiniyela Besakhiwo Nokuphindaphinda Kwe-Buoyancy
Ukwakheka kophahla oluntantayo olunezitezi ezimbili kulawulwa amazinga okuqinisekisa omhlaba wonke aqinile, ikakhulukazi i-API 650, eyalela izakhiwo ezinamaphahla anezitezi ezimbili ezifakwa ezindaweni ezinkulu (ngokuvamile ezingaphezu kwamamitha angu-90 noma amafidi angu-300).
● I-Membrane Ephindwe Kabili Yendawo Yonke: Amapuleti ensimbi angaphezulu nangaphansi ahlukaniswa izindonga eziqondile eziqondile neziyindilinga, okuhlukanisa ingaphakathi libe amakamelo amaningi azimele, angangeni manzi.
● Ukungafani Kokuntanta Okungenakuqhathaniswa: Uma umonakalo wesakhiwo noma ukugqwala kwendawo kubhoboza ikamelo elilodwa noma amabili, amakamelo asele avalekile agcina ukuntanta okuphelele, evimbela ukuwela noma ukucwila kophahla.
● Isivimbeli Sokushisa: Igobolondo lomoya eligcinwe phakathi kwepuleti elingaphezulu nelingaphansi lisebenza njengesivimbeli esinamandla sokushisa, livimba ukushisa kwelanga ukuthi lingafinyeleli ebusweni boketshezi futhi linciphise kakhulu ukwakheka komhwamuko.
Ukuqhathanisa: Uphahla Oluntantayo Olunesitezi Esisodwa vs. Olunezitezi Ezimbili
Ipharamitha Yobunjiniyela | Uphahla Lwe-Pontoon Olunesitezi Esisodwa | Uphahla Oluntantayo Olunezitezi Ezimbili |
Isakhiwo Sophahla | Ulwelwesi olulodwa olumaphakathi oluzungezwe amabhoyi okuntanta angaphandle | Amapuleti ensimbi amabili aqhubekayo angaphezulu nangaphansi kuwo wonke ububanzi |
Ukugquma Ukushisa | Kulingene; ipuleti elimaphakathi livezwa ngqo emisebeni yelanga | Kuhle kakhulu; ukugqoka okugcwele komoya kunciphisa ukudluliswa kokushisa kwelanga |
Ukuntanta & Ukuzinza | Ukuzinza okujwayelekile; kuthambekele ekutshekeni ngaphansi kwemithwalo esindayo yendawo | Ukungafani okuphezulu kokuntanta ngokuhlukaniswa kwamakamelo amaningi |
Ukufaneleka Kobubanzi Bebhakede | Izicelo ezincane ukuya kweziphakathi | Kuyimpoqo noma kuncanyelwa ukugcina okukhulu kobubanzi, okunomthamo omkhulu okuguquguqukayo |
Ukuqina Kwesakhiwo | Isikhathi sokuphila esijwayelekile sokusebenza | Ukumelana okuphezulu nemithwalo yomoya, ukugcwala kwemvula enzima, nengcindezi yemishini |
Imibuzo Evame Ukubuzwa (FAQ)
Q1: Kungani kudingeka uphahla oluntantayo olunezitezi ezimbili emathangeni kawoyela oguquguqukayo?
Impendulo: Uphahla oluntantayo olunezitezi ezimbili luhlala ngqo ebusweni boketshezi, lususa indawo eyingozi yomhwamuko (ullage) ebangela ukulahleka ngenxa yokuhwamuka nokunqwabelana kwegesi evuthayo. Ukwakhiwa kwalo ngamapuleti amabili kunikeza uzinzo olukhulu nokuvimbela ukushisa emikhiqizweni enokuguquguquka okuphezulu.
Umbuzo 2: Ukwakhiwa kwezitezi ezimbili kuvimbela kanjani imililo emathangini?
Impendulo: Ngokugcina ukuthintana okuqhubekayo nobuso boketshezi, uphahla lususa ingxube yomhwamuko we-oksijini ne-hydrocarbon edingekayo ukuze kugcinwe umlilo. Ngaphezu kwalokho, ukuqina kwalo okunamandla kumelana nemithelela enzima yesimo sezulu futhi kuvimbela izingozi zokuthungela emaphethelweni.
Umbuzo 3: Yimiphi imithetho yamazwe ngamazwe elawula ukwakhiwa kophahla oluntantayo olunezitezi ezimbili?
Impendulo: Lezi zophahla ziklanywa, zakhiwe, futhi zihlolwe ngokuvumelana namakhodi obunjiniyela omhlaba wonke afana ne-API 650 (Amathangi Ahlanganisiwe Okugcina Amafutha), i-API 620, kanye nemihlahlandlela ehambisanayo yokuqina kwesakhiwo.
Umbuzo 4: Ukugquma ukushisa kusebenza kanjani ophahleni oluntantayo olunezitezi ezimbili?
Impendulo: Isikhala somoya esingapheli esivalekile phakathi kwezitezi zensimbi ezingenhla nezingezansi sisebenza njengesivikelo sokushisa, sivikele uketshezi olugciniwe emisebeni yelanga enamandla nokushintshashintsha kwezinga lokushisa elizungezile, okunciphisa kakhulu ukwakheka kwengcindezi yomhwamuko.
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