Ipayipi lamanzi lensimbi le-AWWA C213iyisimbozo se-FBE esisetshenziswa ezindaweni zangaphakathi nezangaphandle zepayipi lensimbi ukuze sisetshenziswe ezinhlelweni zamapayipi amanzi ensimbi angaphansi komhlaba noma angaphansi kwamanzi.
Lokhu kugqoka kunikeza isivikelo ekugqwaleni futhi kuqinisekisa ukusebenza okuthembekile kohlelo lwamapayipi isikhathi eside ezindaweni ezingaphansi komhlaba noma ezingaphansi kwamanzi.
Ububanzi bangaphandle bepayipi ≥ 660mm [24in]. Ulwelwesi lwe-resin ye-epoxy olunokufinyelela epayipini ukuze luhlolwe futhi lulungiswe.
Ububanzi bepayipi lensimbi <660mm [24in] bungafaneleka, uma nje kukhona indlela efanele yokuhlola ubuqotho bengubo yangaphakathi.
I-Fusion Bonded Epoxy (FBE)iyi-resin ye-epoxy ephoqelekile ye-thermosetting enesici esisodwa, lapho isebenza ngokushisa, idala ukusabela kwamakhemikhali ebusweni bepayipi lensimbi ngenkathi igcina izakhiwo zayo.
Impuphu ye-epoxy kufanele ibe nezinto ezihlanganisiwe ze-fusion ezinengxenye eyodwa eziqukethe i-epoxy resin, i-curing agent, i-catalyst, i-filler, i-colorant, i-flow control agent, kanye ne-UV inhibitor.
Izinto zokwakha kumele zihambisane nezidingo ze-Umthetho Wamanzi Okuphuza Aphephile.
Uma kudingeka ukuthobela imithetho ye-NSF, izinto ezithinta amanzi aphuzwayo kufanele ziqinisekiswe yi-NSF/ANSI/CAN Standard 61.
Ngokuvamile, izinga lokushisa eliphezulu lokusetshenziswa kwezimbozo cishe liyi-65°C (150°F)Ngaphezu kwalokho, impilo yenkonzo yengubo incishiswa ngokugcina amazinga okushisa aphezulu isikhathi eside.
Uma isetshenziswa ezintweni ezishisiwe kusengaphambili ngokufutha ngogesi, ngokufutha ngombhede noma ngokufutha ngomoya bese isuswa kamuva, i-epoxy powder ikhiqiza ungqimba oluvikelayo olufanayo.
Imisebenzi ethile yile elandelayo:
Ukuhlolwa Kwamapayipi Nokwelashwa Kwangaphambi Kokwelashwa
Ubuso kufanele bungabi namaphutha athinta umkhiqizo wokugcina, njenge-burrs, i-gouges, kanye ne-weld spatters, ezingasuswa ngokusikwa.
kanye nezindawo kufanele zingabi nodaka, upende wokugaya, i-wax, itiyela lamalahle, i-asphalt, uwoyela, uwoyela, ama-chloride, nanoma yiziphi ezinye izinto zangaphandle noma izinto ezingcolisayo ezingase zivuthe emazingeni okushisa okusetshenziswa kwe-epoxy ehlanganisiwe. Susa amabala abonakalayo kawoyela namafutha ngokusula nge-solvent engashiyi zinsalela.
Ukulungiselela Okungaphezulu
Sebenzisa i-sandblasting eyomile ukuze uhlanze ukugqwala kwendawo epayipini lensimbi.
Izidingo Zendawo Yokuqhumisa: Uma izinga lokushisa lepayipi lensimbi lingama-3°C (5℉) ngaphezu kwezinga lokushisa lephuzu lamazolo.
Ukuhlanzeka Komphezulu: Umphezulu wepayipi lensimbi elikhishwe esikalini kufanele uhambisane ne-SSPC-SP10/NACE No. 2.
Ubulukhuni Bomphezulu: Ukujula kwezinhlamvu ze-anchor ebangeni elingu-51-102 μm (2.0-4.0 mil) okulinganiswe ngokuhambisana ne-ASTM D4417. Lokhu kungalinganiswa nge-topper yephethini ye-anchor noma imitha yephethini ye-anchor.
Ubulukhuni bomphezulu obujule kakhulu noma obungajulile kakhulu buzothinta ukusebenza kwesembozo sokugcina se-FBE.
Qaphela: Sicela uqaphele isikhathi esiphakathi kokuqedwa kokususwa kwesilinganiso kanye nenqubo yokumboza ukuze ugweme ukugqwala kwe-flash.
Ukuhlanza Umoya
Umoya ocindezelwe ongenangcolisi kufanele usetshenziswe ukufutha uthuli, ukungcola, noma ezinye izinto zangaphandle ezivela endaweni elungisiwe yepayipi ngendlela engathinti indawo ehlanziwe, elinye ipayipi elihlanziwe, noma ipayipi elizogqokwa noma elizofakwa uphahla.
Ukushisa Amapayipi
Fudumeza ipayipi lensimbi usebenzisa umthombo wokushisa okungafanele ungcolise ubuso bepayipi, kodwa akumele udlule ku-274°C (525°F).
Amazinga okushisa aphezulu angashintsha izakhiwo zomzimba kanye nezici zokuqina kwensimbi.
Izinga lokushisa elingaphezulu lepayipi lensimbi lingalinganiswa kusetshenziswa ipeni le-thermometer noma i-thermometer elinganisiwe.
Uma kuvela umbala oluhlaza okwesibhakabhaka, ipayipi kufanele lipholiswe lifinyelele ekushiseni okujwayelekile bese liqhunyiswa kabusha.
Inqubo Yokumboza
Impuphu ye-FBE isetshenziswa ngokulinganayo ebusweni bepayipi lensimbi elifudumele ngokuncibilikisa umbhede, ukufutha ngogesi, noma ukufutha ngomoya.
Imisele, izindawo ezigobile, noma izimpande akumele zimbozwe nge-FBE.
Uma kusetshenziswa amajoyinti ane-raber-gasket noma ama-coupling emishini, i-epoxy kufanele idlulele emaphethelweni epayipi ngaphandle kokuthi kuchazwe ngenye indlela ngumthengi.
Ukupholisa
Ukupholisa kungenziwa ngomoya noma ngamanzi.
I-PQT: Thenga i-AWWA C213 Water Transmission Steel Pipe ngamanani amancane okulinga ngaphambi kokuthenga ngamanani amakhulu. Ukuhlolwa kwangaphambilini noma ukuhlolwa kwenziwa ukuqinisekisa ukuthi umkhiqizo noma uhlelo luhlangabezana nezindinganiso ezithile zekhwalithi kanye nokusebenza.
Lokhu kuhlanganisa ukuhlolwa kwelebhu, ukuhlolwa kokusebenza, kanye nezinye izinqubo.
Ukubonakala
I-epoxy kufanele ibe bushelelezi ngokuvamile.
I-epoxy akumele ibe nama-blister, imifantu, amabhamuza, i-delamination, noma ezinye izinkinga ezibonakalayo.
Amaphutha okuhlobisa, njengokugoba, ukufiphaza, ukuklwebheka, ukuvala amakhethini, ukufutha ngaphezulu, kanye/noma ikhasi eli-orenji, akufanele kubhekwe njengembangela yokwenqatshwa noma ukulungiswa.
Ukuhlolwa kukagesi ukuze kubonakale ukuqhubeka (ukuhlolwa kweholide le-voltage ephansi)
Ukuqhubeka kokumboza kufanele kuhlolwe ngokuhambisana ne-NACE SPO490.
Okwemiphethongobukhulu obungama-mil angu-20 (508 um) noma ngaphansi, i-holiday detector esethwe ngama-voltage aphansi ku-75 V kufanele isetshenziswe ngokuhambisana ne-NACE SPO188.
Uma inani lamaholide lidlula inani elingaphansi kwengubo kuzodingeka lisuswe futhi liphinde likhiqizwe.
Ububanzi bangaphandle (OD) <14in (360 mm), 1 holiday/meter (3 ft).
Ububanzi bangaphandle (OD) ≥ 14in (360 mm), iholide eli-1/25 ft² (2.3 mm²).
Thatha amaholide ahlolwe, uwalungise, bese uwahlola kabusha.
Ukunamathela
Ukunamathela kwe-epoxy elungisiwe ebusweni bepayipi kungatholakala ngokusunduza i-blade ebukhali nge-epoxy ebusweni bepayipi bese usebenzisa ukunyakaza kokulima ngenhloso yokususa i-epoxy ebusweni bepayipi.
I-epoxy kufanele inamathele ngokuphelele epayipini elisepayipini imelane ngokuqinile nesenzo sokulima futhi ingabi namatshe aqhekekayo futhi ihlangane ne-isilinganiso sokunamathela esingu-1-3.
Ubukhulu
Ubukhulu befilimu yokumboza elungisiwe akufanele bube ngaphansi kwama-305um (12mil), kufaka phakathi imithungo yokushisela.
Enguqulweni endala ye-AWWA C213, kwakukhona umkhawulo wobukhulu obukhulu bokumboza obungu-406 um (16 mils), obususiwe enguqulweni yakamuva ngenxa yobunzima bokufeza lesi sidingo ngesikhathi senqubo yokukhiqiza yangempela.
Ukuhlolwa Okwengeziwe
Ukuhlolwa okwengeziwe kungachazwa ukuze kutholakale ukusebenza kwe-epoxy.
1. Ukubhoboka kwezingxenye.
2. Izimbobo zesikhombimsebenzisi.
3. Ukuhlaziywa kokushisa (i-DSC).
4. Ukucindezeleka okungapheli (ukugoba).
5. Ukucwilisa emanzini.
6. Umthelela.
7. Ukuhlolwa kokuhlukana kwe-Cathodic.
Kufanele iphawulwe ngokucacile ngegama lomenzi, uhlobo lwezinto, inombolo yebhetshi noma yelothi, usuku lokwenziwa, kanye nezimo zokugcina.
Ngokuyinhloko amapayipi okuhambisa amanzi
Izembozo zangaphandle zivame ukusetshenziselwa ukuvikela amapayipi ekugqwaleni kwemvelo, kuyilapho izembozo zangaphakathi zisetshenziselwa ukuvimbela ukungcoliswa kwamanzi, ukunciphisa ukumelana nokungqubuzana, nokwandisa impilo yamapayipi. Lezi zembozo zisiza ukuqinisekisa ukuthembeka nokuqina kwezinhlelo zamapayipi, ukuhambisana nezindinganiso zokuhlanzeka, nokunciphisa isidingo sokulungiswa.
I-ANSI/AWWA C203: Izimbozo Ezivikelayo Ze-Coal-Tar kanye Nezindwangu Zepayipi Lamanzi Lensimbi.
I-ANSI/AWWA C209: Izembozo Zetheyiphu Zepayipi Lamanzi Lensimbi Nezifakelo.
I-ANSI/AWWA C210: Izimbozo ze-Liquid-Epoxy kanye nama-Linings e-Steel Water Pipe kanye ne-Fittings.
I-Botop Steel iyi-Welded esezingeni eliphezuluIpayipi Lensimbi Yekhabhoniumenzi kanye nomhlinzeki ovela eShayina, futhi ungumthengisi wamapayipi ensimbi angenamthungo.
I-Botop Steel izibophezele kakhulu kwikhwalithi futhi isebenzisa izilawuli eziqinile kanye nokuhlola ukuzeqinisekisa ukuthembeka komkhiqizo. Ithimba layo elinolwazi linikeza izixazululo ezenzelwe wena kanye nokusekelwa kochwepheshe, kugxilwe ekwanelisekeni kwamakhasimende. Silangazelela ukusebenza nawe.
