I-NSF/ANSI 61 Yemathangi Amanzi Okuphuza: Okufakwa Isitifiketi
Kwadalwa ngo Ngokwamukisa
I-NSF/ANSI 61 Yamanzi Aphuzwayo: Lokho Isitifiketi Esikuhlanganisayo
Isetifiketi se-NSF/ANSI 61 siyisitatimende sezempilo esisezingeni lezingxenye, hhayi isetifiketi sokuthi ithangi ilungele ukusetshenziswa. Sithi izinto zokwakha nezingxenye ezibalwe ngaphakathi kobubanzi baso zihlolwe ngenxa yemiphumela yazo yezempilo lapho zithintana namanzi okuphuza, futhi asisho lutho mayelana namandla esakhiwo, ukumelana nomlilo, ukusebenza kwezinkinga zomhlaba, ukuqina kwengubo yokumboza noma ubuqotho bogobolondo. Ngakho-ke ithangi lamanzi okuphuza lidinga imibhalo emithathu ehlukene ebizwe esimisweni esisodwa: isetifiketi esihlanganisa izingxenye ezimanzi, isitifiketi noma ukufakwa ohlwini okuhlanganisa ingubo yokumboza noma ingubo ethintana namanzi, kanye nezinga lokwakha elilawula ithangi njengesakhiwo. Igebe elibaluleke kakhulu ekubuyekezweni kwethenda ingumngcele wobubanzi besetifiketi uqobo: ama-gasket, izinto zokuvala kanye nezixhumi eziguquguqukayo ezihlala ngaphakathi komngcele wesetifiketi kwenye iphrojekthi bese zingena ngaphandle kwawo kwelinye. Isetifiketi esisezingeni lenkampani esiphethwe umkhiqizi sikhombisa ikhono; isetifiketi esiqondene nephrojekthi ethile, esikhishwe mayelana nethangi langempela, iyona ncwadi evala umbuzo wokuhambisana kumnikazi, njengoba kuchaziwe nge-NSF/ANSI 61 ithangi lamanzi okuphuza.
Lokho isitifiketi se-NSF/ANSI 61 esiyisitatimende ngakho empeleni
Isitifiketi siyisitatimende semiphumela yezempilo mayelana nezinto ezithintana namanzi okuphuza. Siphendula umbuzo owodwa: ukuthi into eshiwo, uma isetshenziswa ngendlela ehlosiwe nasezimweni ezishiwo, ingaba nomthelela wezinto eziyingozi emanzini yini. Asiphenduli ukuthi umkhumbi wamanzi wakhiwe ngendlela eyanele yini, ukuthi uzomelana nomlilo yini, ukuthi indawo yawo yokubopha izosinda esigamekweni sokuzamazama komhlaba yini, noma ukuthi i-coating iyohlala ilungile ngemva kweminyaka engamashumi amabili icwiliswe yini. Leyo imibuzo ehlukile enezindinganiso ezihlukile, futhi isitifiketi esethulwa sengathi siyayixazulula le mibuzo sichazwa ngokungalungile, njengoba kuchaziwe ngokuningiliziwe mayelana nethangi lamanzi okuphuza le-nsf/ansi 61.
Umphumela kumhloli wamathuluzi ukuthi isitifiketi kufanele sifundwe njengedokhumenti yobubanzi ngaphambi kokuba sifundwe njengedokhumenti yokuhambisana. Izinkambu ezintathu zibalulekile: yiziphi izingxenye nezinto ezihlanganisiwe, yimuphi umodeli noma umugqa womkhiqizo okusebenza kuwo uhlu, nokuthi iyiphi idethi yokuqala kanye nokuthi iyiphi inhlangano yokugunyaza. Isitifiketi esisho umugqa womkhiqizo esikhundleni sezingxenye ezifakiwe sishiya umhloli ecabanga ukuthi kukhona ukuhambisana, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Izingxenye eziwela ngaphakathi kobubanzi besitifiketi
Izingxenye ezisemkhakheni yizo ezithintana namanzi, futhi endishini yensimbi eboshiwe uhlu lude kunalokho umthengi akulindele. I-coating yesigobagobo noma i-lining iyindawo enkulu kunazo zonke, kodwa izinto ezibangela izingxabano ziyizincane: ama-gasket avala imithungo eboshiwe, ama-sealant ezindaweni zokuphuma nokungena, izixhumi eziguquguqukayo, ama-gasket endlela yokungena nophahla lwesivalo, kanye nama-coating ezingxenyeni zangaphakathi njenge-baffle noma i-diffuser. Indlela yokusingatha lokhu ukufuna uhlu lwezingxenye olubala into ngayinye ethintwa amanzi ngokwezigaba zayo kanye nereferensi yesitifiketi, ukuze umhloli akwazi ukuhlola ukumbozwa into ngayinye. Uhlu olubala kuphela i-coating yesigobagobo alukakhiwa; lwalubhalelwe ukulingana nempendulo esefayeleni, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi okuphuza.
Ama-gasket, izinto zokuvala kanye nezixhumi ezivame ukushiywa
Igceke eliphindaphindayo kuma-submittals wamanzi okuphuza i-elastomer kanye nongqimba lwe-sealant. I-tank shell ingaqinisekiswa ngokuphelele futhi wonke amaphaneli angaba nesitifiketi esivumelekile, kuyilapho i-gasket ehlukanisa wona ingenawo nhlobo isitifiketi esibhekwayo. Lokhu kwenzeka ngoba ama-gasket nama-sealant athengwa njengezingxenye kunokuba abe yingxenye yephakheji ye-tank, futhi ngoba umhlinzeki oqinisekise i-tank angacabanga ngokufanelekile ukuthi izinto zokuxhuma zomthengi zisingathwa ngokwehlukile. Lesi sicabango asivamisile ukubhalwa phansi, yingakho siveza ingxabano ngesikhathi sokwamukelwa, njengoba kuchaziwe nge-nsf/ansi 61 potable water tank.
Igebe lesibili umngcele phakathi kwezinto ezigunyaziwe nezingagunyaziwe ngaphakathi kweqoqo elilodwa: isixhumi esiguquguqukayo singaba ne-liner egunyaziwe kanye nerabha yangaphandle engagunyaziwe, futhi ithuluzi lezinga lingaba nesitifiketi se-probe emanzi kodwa hhayi se-gasket eyivalela egobolondweni, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
· Umthungo one-gasket uyingxenye emanzi futhi kufanele ube kuhlelo, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
· Izixhumi eziguquguqukayo zivame ukuthengwa ngaphandle kwephakethe lethangi, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
· Ingxenye eqinisekisiwe ene-liner engaqinisekisiwe ayiyona ingxenye eqinisekisiwe, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
· Amathuluzi amaleveli, ama-probe namasango konke kuletha izinto ezithintwayo, njengoba kuchaziwe ku-tanki yamanzi aphuzwayo ye-nsf/ansi 61.
Ama-coating nezingubo zangaphakathi ekusetshenzisweni kwamanzi aphuzwayo
Indawo enkulu kakhulu emanzi ethangini lensimbi iyingubo noma isembozo, futhi ukugunyazwa kwayo kuyinto ehlukile ekugunyazweni kwensimbi. Ingubo ingagunyazwa ukuthi ixhumane namanzi okuphuza ngokusebenzisa uhlu oluchaza into kanye nezimo zokusetshenziswa, futhi izinkomba ezifanele zethangi lensimbi lokugcina amanzi zihlanganisa i-AWWA C550 yezembozo zokuvikela amanzi okuphuza kanye nezitifiketi zezinto zomenzi wengubo. Emathangini ensimbi ahlanganiswe nengilazi, i-ISO 28765 ilawula ukuklanywa kwethangi le-vitreous enamel, futhi ukusebenza kwengubo kuqinisekiswa uhlelo lokuhlola olusemzimbeni olurekhodwa yisisekelo seqiniso somkhiqizo: ukushiswa ebangeni lika-820 kuya ku-930 degrees, ukujiya okuqediwe kuka-0.25 kuya ku-0.45 mm, ukunamathela kuka-3450 N/cm², ubulukhuni be-Mohs obungu-6.0, ukuhlolwa kwe-holiday kuka-1500 V kuzinhlangothi zombili zalo lonke ipuleti kanye nempilo yokusebenza yeminyaka engamashumi amathathu noma ngaphezulu. Lezo yizici ze-enamel, umbuzo ohlukile ekugunyazweni kwamanzi okuphuza, njengoba kuchaziwe ngethangi lamanzi okuphuza le-nsf/ansi 61.
Lokho i-NSF/ANSI 61 engakufakazeli: isakhiwo, umlilo nokuzamazama komhlaba
Igceke elibangela izingxabano ezibiza kakhulu ukucabanga okuthi ithangi eliqinisekisiwe iyithangi eligunyaziwe. Akunjalo. Ukwaneleka kwesakhiwo kulawulwa izinga lokwakhiwa kwethangi kanye nesisekelo somklamo esisebenzayo; ethangini eliboshiwe lokhu kuyi-AWWA D103 nemigomo yesayithi yokuzamazama komhlaba nomoya, kanti ethangini elishiselwe kuyi-AWWA D100 nokugcotshwa kwasensimini ngaphansi kwe-AWWA D102. Umsebenzi womlilo ulawulwa ngokwehlukile futhi, yi-NFPA 22. Akukho kulokhu okusungulwa isitifiketi semiphumela yezempilo, njengoba kuchaziwe ngethangi lamanzi okuphuza le-nsf/ansi 61.
Igebe lesibili ukushintshwa. Uma i-gasket eqinisekisiwe ishintshwa nge-equivalent engaqinisekisiwe, noma i-coating ilungiswa ngento engaphandle kohlelo olugunyaziwe, isitifiketi asisachazi itanki, ngoba sihlanganisa ukucushwa okwaqinisekiswa futhi ukushintsha kwento ethintwayo kwenza lokho kusebenza kungavumeleki ngaphandle uma ukushintsha kona kukho okuqinisekisiwe, njengoba kuchaziwe ku-tanki yamanzi aphuzwayo ye-nsf/ansi 61.
Indlela i-NSF/ANSI 61 ehlukanisa ngayo umsebenzi ne-NSF/ANSI 372 kanye namazinga e-AWWA
Imibhalo emibili ye-NSF iphendula imibuzo ehlukene futhi ivame ukudidaniswa. I-NSF/ANSI 61 ibhekana nemiphumela yezempilo yezinto ezithintana namanzi okuphuza, ihlanganisa nokudlulela kwezinto emanzini. I-NSF/ANSI 372 ibhekana nokuqukethwe komthofu ezingxenyeni nasezintweni zohlelo lwamanzi okuphuza, ngakho-ke ingumkhawulo wokwakheka hhayi ukuhlolwa kokudlulela. Ingxenye ingahambisana nokukodwa kodwa hhayi okunye, futhi isicaciso esicela kuphela isitifiketi ngokujwayelekile asishongo ukuthi sisho okukuphi, njengoba kuchaziwe nge-nsf/ansi 61 ithangi lamanzi okuphuza.
Umndeni we-AWWA uhlinzeka ngohlaka lokwakha nokufaka izinto: i-D103 yamathangi ahlanganisiwe agcotshwe efektri, i-D100 yamathangi ashiselwe, i-D102 yokugcotshwa kwensimu, kanye ne-C550 yezinto zokuvikela zamanzi aphuzwayo. I-NSF/ANSI 61 kanye ne-372 zilawula okungathinta amanzi, imibhalo ye-AWWA ilawula umkhumbi kanye nohlelo lwawo lokuvikela, futhi ithangi eliphelele lamanzi aphuzwayo liyinhlanganisela yalezi zinto ezimbili, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Imibhalo emithathu okufanele ibalulwe esicacisweni esisodwa
Izicaciso eziningi zamathangi amanzi aphuzwayo ziyahluleka hhayi ngoba kunikezwe umkhiqizo ongafanele kodwa ngoba imfuneko yabhalwa njengomugqa owodwa. Ukuyibhala njengamadokhumenti amathathu aqanjwe ngamagama, ngalinye linereferensi yalo kanye nerekhodi lokwamukelwa, kususa ukungacaci ngezindleko eziphansi. Ngalinye linomnikazi ohlukile kanye nomkhondo wobufakazi ohlukile: isitifiketi sengxenye sikhishwa ngokusho kwezinto zokwakha futhi sisekelwa uhlu lwezingxenye, ukugunyazwa kwekhodi yokumboza kusekelwa uhlelo lwangaphakathi futhi kusekelwa amarekhodi wokujiya nokuhlolwa kwezikhala, kanti ukuhambisana nokwakhiwa kusekelwa amarekhodi wokuklama nokwakha. Njengoba womathathu eqanjiwe, ukubuyekezwa kuba ukuhlolwa kwamadokhumenti amathathu ngokumelene namasethi amathathu obufakazi, njengoba kuchaziwe nge-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Idokhumenti | Lokho okufakazelayo | Lokho okungakufakazeli | Umkhondo wobufakazi |
Isitifiketi se-NSF/ANSI 61 | Imiphumela yezempilo yezinto ezisetshenzisiwe ezisohlwini | Isakhiwo, umlilo, ukuzamazama komhlaba, ukuqina | Uhlu lwezingxenye, inkomba yesitifiketi |
Isimemezelo se-NSF/ANSI 372 | Okuqukethwe komthofu ezintweni ezihlanganisiwe | Ukufuduka kwanoma iyiphi enye into | Isimemezelo sezinto ezisetshenziswayo ngengxenye ngayinye |
Ukugunyazwa kwekhodi yokumboza ephuzwayo | Uhlelo lokumboza olugunyaziwe ukuthintana namanzi | Isimo se-tank, ukuboshwa, izinto zokuxhuma | Amarekhodi wogqinsi, ukuhlolwa kwe-holiday, ukuhlolwa kokuphulukiswa |
Indinganiso yokwakhiwa kwethangi | Igobolondo nezisekelo eziklanyelwe umsebenzi | Ikhwalithi yamanzi noma imiphumela yezempilo | Isisekelo somklamo, imidwebo, amarekhodi wokwakhiwa |
Ukuqinisekisa isitifiketi esiqondene nephrojekthi esikhundleni sesitifiketi senkampani
Ukuhlolwa okubalulekile ukuhlolwa okubonisa ukuthi idokhumenti esephaketheni yamathenda ingeyethangi elithendwayo. Isitifiketi senkampani sikhombisa ukuthi umkhiqizi unesitifiketi somugqa womkhiqizo; asikhombisi ukuthi ithangi elicashunwe ngokumelene nalo projekthi lihlanganisiwe yileso sitifiketi. Ukubuyekezwa kufanele kuqinisekise ukuthi umnikazi wesitifiketi uhambisana nomkhiqizi womkhiqizo ocashuniwe, ukuthi izingxenye ezisohlwini kanye nomugqa womkhiqizo kuhlanganisa izingxenye ezinikezwayo ngempela, nokuthi isitifiketi sasisebenza ngosuku lokuthunyelwa. Isitifiketi seprojekthi kufanele sihlolwe ngokumelene nohlu lwezingxenye kunokuba sifundwe sodwa, ngoba uhlu yilapho kuvela khona ukushiywa, njengoba kuchaziwe ngethangi lamanzi okuphuza le-nsf/ansi 61.
The company fact base records that its glass-fused-to-steel product line carries NSF/ANSI 61 and WRAS, LFGB and FDA certification for water and food contact applications, and that project-level certificates are issued through a third-party certification body, which closes the question only when the document for the specific project is produced, as detailed for nsf/ansi 61 potable water tank.
Imithetho yokushintsha kanye nokuthi kufanele kubhalwe ini emthethweni wethenda
Ukufaka esikhundleni kuyindlela okwenzeka ngayo ukuthi ithangi elihambisana nemithetho libe elingahambisani nayo ngaphandle kokuthi kube nomuntu onqumayo ukuthi kufanele kube njalo. Umthetho ulula ukuwubhala futhi kufanelekile ukuwubhala: akukho into ethintwayo engafakwa esikhundleni ngemva kokuqinisekiswa ngaphandle uma into efakwa esikhundleni inokuqinisekiswa okulinganayo futhi ushintsho lubhalwe efayeleni lethangi, ngemvume yomgwamanda oqinisekisayo lapho isitifiketi sidinga khona. Izinto ezingathintwanga njengokugcotshwa kwangaphandle, isitebhisi sokungena kanye nesiteji zingafakwa esikhundleni ngokukhululekile, futhi ukusho lowo mngcele ngokusobala kuvimbela umkhawulo ukuthi ungathathwa njengosebenza kulo lonke ithangi, njengoba kuchaziwe ngokuningiliziwe mayelana nethangi lamanzi okuphuza le-nsf/ansi 61.
Amagama ethenda kufanele futhi adinge isitifiketi sephrojekthi ngesikhathi sokuhambisa hhayi ngesikhathi sokunikezela, uhlu lwezingxenye kufanele luhanjiswe kanye nayo, izicelo zokushintsha kufanele zicutshungulwe ngaphambi kokwenziwa hhayi ngesikhathi sokusebenza, futhi inombolo yesitifiketi kufanele ishiwo emdwebeni wethangi ukuze idokhumenti nomkhumbi kuhlale kuxhunyiwe, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi okuphuza.
· Akukho kushintshwa kwezinto ezimanzi ngaphandle kwesitifiketi esilinganayo noshintsho olurekhodiwe, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi okuphuza.
· Shono ngokucacile ukuthi izinto ezingamanzisi zihlala zishintsheka ngokukhululekile, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi okuphuza.
· Dinga isitifiketi sephrojekthi nohlu ngesikhathi sokuhambisa, hhayi ngesikhathi sokunikezela, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi okuphuza.
· Shono inombolo yesitifiketi emdwebeni ukuze idokhumenti nomkhumbi kuhlale kuxhumene, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Isifundo Sombandela Wephrojekthi
Ukulethwa okuyisithenjwa kulo msebenzi, okucashunwe emtatsheni wamaphrojekthi oqinisekisiwe. Izinga lokufanisa B. Uhlelo lwamanzi aphuzwayo olucashunwe ukufakazela ikhono lokukhiqiza imibhalo yokuqinisekisa yezinga lephrojekthi yamathangi engilazi ehlanganiswe nensimbi. Lokhu akubona ubufakazi bokuthi i-NSF/ANSI 61 iqinisekisiwe: isitifiketi sikhishwa yinhlangano yangaphandle futhi kufanele siqinisekiswe njengedokhumenti eqondene nephrojekthi, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
I-ID yephrojekthi | Izwe | Umkhiqizo | Umthamo | Inani lamathangi | Ubukhulu | Ukuqedwa | Ububanzi bokuhlinzeka |
NAM-POT-44900 | INamibia | Ithangi Elahlanganisiwe Lensimbi Negilasi (GFS) Eliboshiwe | 44,900 m3 | 4 | φ41.26 × 8.4 m (H) ithangi ngalinye | 2022-09 | Akurekhodiwe |
Uhlelo lwamanzi aphuzwayo olucashunwe ukufakazela ikhono lokukhiqiza imibhalo yokuqinisekisa yezinga lephrojekthi yamathangi ensimbi ehlanganiswe nengilazi. Lokhu akuwona ngokwako ubufakazi besitifiketi se-NSF/ANSI 61: isitifiketi sikhishwa yinhlangano yangaphandle futhi kufanele siqinisekiswe njengombhalo oqondene nephrojekthi ethile, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Imibuzo Evame Ukubuzwa
Umbuzo 1. Isitifiketi se-NSF/ANSI 61 sifakazela ini ngempela?
Ukuthi izinto ezisetshenziswayo nezingxenye ezisohlwini lwazo zihlolwe ngemithelela yezempilo lapho zithintana namanzi okuphuza. Akufakazeli ukwaneleka kwesakhiwo, ukumelana nomlilo, ukusebenza ekuzamazameni komhlaba, ukuqina kwengubo yokumboza noma ubuqotho bogobolondo. Ngakho-ke ithangi lamanzi aphuzwayo elihambisana nemithetho liyingxubevange yemibhalo eminingana, hhayi umkhiqizo wesitifiketi esisodwa, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Umbuzo 2. Yiziphi izingxenye ezingaphakathi kobubanzi besitifiketi?
Yonke ingxenye ethintana namanzi, futhi ethangini lensimbi eliboshiwe luhlu lude kunalokho abathengi abakulindele: i-coating noma i-lining yogobolondo, ama-gaskets avala imithungo eboshiwe, ama-sealants ezindaweni zokuphuma, izixhumi eziguquguqukayo, izivalo ze-manway ne-roof hatch, kanye nezingxenye zangaphakathi ezifana nama-baffles, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Umbuzo 3. Ingabe ama-gaskets nama-sealants kuyahlanganiswa?
Ziyizingxenye ezimanzi futhi zifanele ukuba semkhakheni, kodwa yizona ezivame ukushiywa, ngoba ama-gaskets nama-sealants zithengwa njengezingxenye hhayi njengengxenye yephakethe lethangi. Ugobolondo oluqinisekisiwe olune-gasket yomthungo engaqinisekisiwe yiyona ndlela evamile yokwehluleka. Ikhambi uhlelo lwezingxenye olubhaliwe, hhayi ukucabangela ngokuthi kwafakwa ini, njengoba kuchaziwe ku-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Umbuzo 4. Ikhodi yokumboza igunyazwa kanjani ukuthintana namanzi aphuzwayo?
Ngokwehlukile ku-tank nensimbi, ngokuhlelwa noma ukugunyazwa okubeka into yokumboza nezimo zayo zokusetshenziswa, okubhekiselwa kukho eceleni kwendlela yokuvikela ephuzwayo i-AWWA C550 kanye nesitifiketi somkhiqizi wokumboza. Ukucaciswa okuhambisanayo kubeka kokubili ukugunyazwa kokumboza nokugunyazwa kokwakhiwa kwe-tank, futhi kudinga amarekhodi ogqinsi, i-holiday nokuphulukiswa kokumboza ngokwako, njengoba kuchaziwe nge-nsf/ansi 61 potable water tank.
Umbuzo 5. Iyiphi indlela elawula ukuhambisana kwesakhiwo nokomlilo?
Izindinganiso zokwakhiwa kwethangi kanye nesisekelo somklamo esisebenzayo, hhayi i-NSF/ANSI 61. Ensimbini yensimbi eboshiwe yi-AWWA D103 enemibandela yokuzamazama komhlaba nomoya wesizinda, ensimbini yensimbi eshiselwe yi-AWWA D100 enokugcotshwa kwasensimini ngaphansi kwe-AWWA D102, futhi emsebenzini womlilo yi-NFPA 22. Isitifiketi semiphumela yezempilo asisho lutho ngalokhu, njengoba kuchaziwe ngethangi lamanzi okuphuza le-nsf/ansi 61.
Umbuzo 6. I-NSF/ANSI 61 ne-NSF/ANSI 372 zihlukanisa kanjani umsebenzi?
I-NSF/ANSI 61 ihlola imiphumela yezempilo yezinto ezithintana namanzi okuphuza, ihlanganisa nokufuduka kwezinto ziye emanzini. I-NSF/ANSI 372 ibeka umkhawulo wokuqukethwe komthofu, ngakho-ke uwumkhawulo wokwakheka hhayi ukuhlolwa kokufuduka. Ingxenye ingahambisana nokukodwa hhayi okunye, ngakho-ke isicelo sokuthola isitifiketi ngokujwayelekile asishongo ukuthi iyiphi imfuneko eshiwo, njengoba kuchaziwe ngethangi lamanzi okuphuza le-nsf/ansi 61.
Umbuzo 7. Ingabe isitifiketi esisodwa singasetshenziswa kabusha kumaphrojekthi ahlukene?
Isitifiketi sezinga lenkampani singakwazi, ngoba sikhombisa ukuthi umkhiqizi unesitifiketi somugqa womkhiqizo. Isitifiketi esiqondene nephrojekthi yiso esivala umbuzo wokuhambisana, futhi kufanele sihlolwe ngokuhambisana nohlu lwezingxenye zethangi elinikeziwe, kube nesitifiketi esiqinisekisa ukuthi umnikazi wesitifiketi, izingxenye ezisohlwini, umugqa womkhiqizo kanye nosuku kuyahambisana nokuthunyelwe hhayi imodeli yangaphambili, njengoba kuchaziwe ngensf/ansi 61 ithangi lamanzi okuphuza.
Umbuzo 8. Umthengi uqinisekisa kanjani isitifiketi ngesikhathi sokubuyekezwa kwethenda?
Ngokuhlola izinto ezine mayelana nethangi elisethendweni: ukuthi umnikazi wesitifiketi uyahambisana nomkhiqizi womkhiqizo ocashuniwe, ukuthi izingxenye ezisohlwini kanye nomugqa womkhiqizo kuhlanganisa izingxenye ezinikezwayo ngempela, ukuthi isitifiketi sasisebenza ngosuku lokuthunyelwa, nokuthi uhlelo lwezingxenye lubala zonke izinto ezithintwa amanzi, njengoba kuchaziwe nge-nsf/ansi 61 ithangi lamanzi okuphuza.
I-NSF/ANSI 61 iyisitatimende semiphumela yezempilo esezingeni lezingxenye, ngakho-ke ithangi lamanzi okuphuza elihambisana nemigomo lidinga imibhalo emithathu eqanjwe ngokwehlukana esikhundleni sesitifiketi esisodwa esifundwa njengokugunyazwa okujwayelekile. Isitifiketi sihlanganisa izingxenye ezimanzi ezisohlwini, yingakho ama-gasket, izinto zokuvala kanye nezixhumi eziguquguqukayo ezinquma impikiswano yizo ezivame ukushiywa ngaphandle kobubanzi. Ukugunyazwa kwe-potable coating kuhlanganisa uhlelo lwe-lining oluthintana namanzi, futhi izinga lokwakha lihlanganisa ithangi njengesakhiwo, ukusebenza kwalo emlilweni kanye nokubambelela kwalo, okungekho kukho okubhekiswa yisitifiketi semiphumela yezempilo. Isinqumo okufanele sithathwe esigabeni sokuthenda ukuthi kudingeke isitifiketi sephrojekthi kanye nohlu lwezingxenye zaso ngaphambi kwe-oda, ukuthi konke ukushintshwa kuboshelwe emthethweni obhaliwe, nokuthi inombolo yesitifiketi ibekwe emdwebeni, ngoba yikho okwenza amaphepha avaleke ekuhlolweni, njengoba kuchaziwe nge-nsf/ansi 61 potable water tank.
Khuluma Nonjiniyela
Ngesicelo sethangi lamanzi aphuzwayo, thumela umsebenzi wethangi nokuthi ngabe amanzi ayaphuzwa, ayelashwa noma awaphuzwa, umthamo wokugcina kanye nokuhlelwa komkhumbi, into eyindilinga ehlongozwayo kanye nohlelo lokumboza noma lokufaka ngaphakathi, uhlu lwezingxenye ezimanzi ezihlanganisa ama-gasket, izinto zokuvala, izixhumi, ama-hatch kanye namathuluzi ezinga, izinga lokwakha elisebenzayo, kanye nesitifiketi esifunwa yisicaciso ngegama. Sizobuyisela uhlelo lwezingxenye olunesitifiketi esiyisithenjwa esifunekayo sento ngayinye emanzi, isethi yokuhambisana yamadokhumenti amathathu yephrojekthi, umthetho wokushintsha ohlanganisa izinto ezimanzi kuphela, kanye nohlu lwesicelo oludingekayo ukuvala umbuzo wamanzi aphuzwayo ngaphambi kwe-oda hhayi ngemuva kokunikezwa, njengoba kuchaziwe nge-nsf/ansi 61 ithangi lamanzi aphuzwayo.
Mayelana ne-Center Enamel
I-Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) ingumkhiqizi ochwepheshe ozinikele ekuklameni nasekwakheni amathangi okugcina axhunywe ngamabhawodi kusukela ngo-2008. Uhlu lwemikhiqizo luhlanganisa amathangi e-Glass-Fused-to-Steel (GFS), amathangi e-Fusion-Bonded Epoxy (FBE), amathangi ensimbi engagqwali, amathangi ensimbi egilivethayizi kanye nophahla lwedome le-aluminium geodesic, kanye nokwesekwa kobuchwepheshe be-EPC kanye nezinsiza zamathangi. Ukukhiqizwa kwenzeka ngaphansi kwe-ISO 9001, ISO 14001 kanye ne-ISO 45001, futhi uhlu lwemikhiqizo luqinisekisiwe nge-NSF/ANSI 61, WRAS, CE kanye ne-EN 1090, ISO 28765, AWWA D103-09 kanye ne-NFPA lapho isicelo sidinga khona. Inkampani inamalungelo obunikazi acishe abe ngu-200 okufaka uqweqwe lwe-enamel, isebenza endaweni yokukhiqiza engu-150,000 m2, ikhiqiza cishe amapuleti ensimbi angu-300,000 anoqweqwe lwe-enamel ngonyaka, isiqedile amaphrojekthi afakiwe angaphezu kuka-30,000 futhi ithumele amathangi emazweni angaphezu kwe-100. Ikhono lokuklama kobunjiniyela lihlanganisa umthamo wamathangi afinyelela ku-60,000 m3, njengoba kuchaziwe ngokuningiliziwe ku-nsf/ansi 61 ithangi lamanzi okuphuza.
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