Ukuthenga i-PE pipe eyafanele kumathuluzi we-gas okuphakamisa i-ISO 4437.

Kutheni i-ISO 4437 Iyadinga Kusiqhupha Se-PE Esisebenzisa Kwemithambo Yokugqibela Kwegas

Izihlobo Zomkhakha, Izivinini Zesifaniso, Nezindlela Zokusebenza Ngemva Kwezinsuku

I-ISO 4437 iyachaza izinkinga ezifanele kusiqhupha se-polyethylene (PE) kunye nezinkotho zokugqibela kwemithambo yegas , ekubhekisweni kumkhakha wokusebenza, izinhlobo zezingxenye, iziphumo zokusebenza, nokuphatha kwezikhathi zokulungisa umkhakha.

Le stondi isebenzisa kahle amakhakha we-PE eziyisifaniso PE 80 kunye ne-PE 100 , okwakhiwe ngokuchaza ukuthi kuyini umkhawulo wokusebenza okuncane (MRS).

• PE 80 : umkhawulo wokusebenza okuncane (MRS) woku-8.0 MPa
• PE 100 : umkhawulo wokusebenza okuncane (MRS) woku-10.0 MPa

Amathuba okusebenza ngomthelela ayisisekelo kwe-PE 100 akhulu kungekwa kwe-PE 80 ngokubonakalisa ukuthi kuyisisekelo sokusebenza ngomthelela kwezinsuku eziningi. Ngaphezu kwalokho, PE100-RC (Ukuhlanya kokugcina) izinhlobo zesi-PE100 eziyisisekelo esizimele ekwenzeni ukuthi zibe nesibopho esikhulu sokuhlanya kokugcina, njengokusebenzisa kuzo izindawo ezinokuthi zibe yinkululeko yokuhamba ngaphandle kwemithambo futhi nezindawo ezingenakwazi ukuzimela.

Ukuthi yini umthelela owasebenzayo uyakhiwa ngamaphuzu amaningi, njengokuthi:

• Usizo Wesigaba
• Isidingo sokuphakama (SDR)
• Isiphakathi sokudesign
• Izinga Lokusebenza
• Izinkinga Zokusebenza

Izinhlobo zokugcina kwe-SDR eziningi ziyinkulungwane ye-SDR 11 ne-SDR 17.6. Isibonelo, izipha ze-PE100 ze-SDR 11 zisetyenziswa ngokubanzi emisebenzini yokuhambisa igasi ezingaphandle kwezinkinga zokuphakama okukhulu, ngakho-ke i-SDR 17.6 inika indlela engeyona yokuqinisa igasi ngenxa yokuba iphahla yayo iyincinci.

Ukuphakama kokudesign we-pipe ye-PE yegasi kubhalwa ngokusebenzisa isilinganiso se-MRS sesithuthi, isilinganiso se-SDR, nezifaktor zokuphepha. Abasemthengisi kufanele bavume ukuthi izinto ezisemthengiselweni ziyafanele nokuthi zingaphansi kwesilinganiso sokuphakama ngokwesikhathi eside sokuzimela ngokwesilinganiso se-ISO 1167.

Izipha ze-PE zegasi ezihlanganiswe ngokwesilinganiso se-ISO 4437 zihlanganiswe ukuze zibe nesikhathi sokusebenza esincinci se-50 iminyaka ngemizamo eyalwe. Ngokwempikiswano, izisifunda zesiphakathi se-PE zegasi ezihlanganiswe ngendlela efanele nezihlanganiswe ngendlela efanele ziyabona isikhathi sokusebenza esiningi kakhulu ngokwesibonelo ngokuthi i-polyethylene ibhekene ngokuphelele nokuthi ikhathazeka, ikhathazeka ngamachemikhali, nokuthi ikhathazeka ngokwesikhathi sokusebenza.

Ukuhlinzekisa ukusebenza kwezinsuku eziningi, izinkulungwane ze-PE ziyasebenzisa i-carbon black noma izisistimu zesitabilayazeya esizokuvikela phansi kwesikhathi sokugqibela nokuphatha kwezinhlobo zemvelo.

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Amaphuzu Okusebenza Okuphelele: Ukukhathaza Kokugqibela Kwemithambo Yekhresi Nokuphatha Kwezinkulungwane

Kungani Ukukhathaza Kokugqibela Kwemithambo Yekhresi Kuyisisekelo Sokubaluleka Kwezithombe Zesi-PE Zokusakha Kwekhresi

Ukukhathaza kokugqibela kwemithambo yekhresi (SCG) kuyisisekelo esibalulekile kakhulu sokusebenza kwezithombe zesi-PE zokusakha kwekhresi.

Ngaphandle kokufa kahle, ukugqibela kwemithambo yekhresi kuthola isikhathi sokugqibela ngokucindezela phansi kwesikhathi sokusebenza esihlukene ngezindawo zokuzimela:

• Umgangatho wokugcina
• Ukudlula kwemhlaba
• Ukubeka Kwesikhathi Esilwandle
• Izimo zokufaka
• Imigomo Yemhlahlandlela

ISO 4437 ibiza ukuthi izithombe zesi-PE zokusakha kwekhresi zifanele ukubonisa ukuthi zinamandla okukhathaza kokugqibela kwemithambo yekhresi ngokusebenzisa izindlela zokuzivocavoca eziphathelene nesiqu.

Izindlela zokuvocavoca ezinkulu ziyashiyelwa:

• Ukuhlanza Kwesitha Sokuphakamisa (NPT) ngokwesiqephu se-ISO 13479
• Ukuhlanza Kwesitha Sokuphakamisa Kwezinkulungwane Zonke (FNCT) ukuvavanya izinkulungwane ezinzima

Amakhompyutha ase-PE100-RC ayabika ubukhulu be-SCG ngokulingana nezinkulungwane ze-PE100 zezindawo eziphakeme kanye nazo ziyasebenziswa kuzo zinkulungwane ezilandelayo:

• Ukufaka isitha ngaphandle kokubhala isitha
• Amaprojekthi okubhala isitha ngaphansi
• Izimo zemifula yasezintaba
• Izimo zokufaka esizini esizimele

Ngaphezu kwebukhulu be-SCG, amasitha we-gas ase-PE kufanele abe nemiphumela yezinsizakalo, ubukhulu be-hydrostatic, nokubona ubukhulu be-ekholojikhi ngokuphelele kwesikhathi sokusebenza kwazo.

Abahlinzeki kufanele bafunde izimboni zokuhlinzekwa ezinkulu ukuze bavume ukuthi isibhakabhaka sonke sesifunda sibe nemiphumela yezinkulungwane efanayo kanye nokuthi kuyasebenza ngokuphelele nesiqephu se-ISO 4437.

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Ukuthi Yini Ukuvavanya Ukuthi Isitha Se-PE Siyasebenza Ngokuphelele Nesiqephu Se-ISO 4437

Amathuba okufakwa kwezicelo, ukuzivikela nokubhalwa kwezinto ezikhona

Kukuphatha kwezinkampani zokuthenga izihlangu se-PE ngaphandle kwe-Europe, ukuvikela ukuthi kuyasebenza kungenxa yokubheka isicelo kuphela. Abathengi kufanele bahlale bavikela isistimu sokuhlela konke, futhi kufaka isibonelo sesithembu, ukulawula kokuproducwa, nokubhalwa kwezizifundo zokuzivikela.

E-Europe, izihlangu se-PE zokugcina igasihlangu ziyaspecifikwa ngokwesifunda se- EN 1555 , okuyisifunda esisodwa nge-ISO 4437.

Ngokwesifundo sasezwe noma isifundo sokusebenza kwezinhlangano zokugcina igasihlangu, abaproducwa kufanele bafakwe ngemithombo yokuqinisekisa eyaziwa njenge-:

• Kiwa
• DVGW
• Bureau Veritas
• Amathombo amabili akhuselekileyo okufakwa kwezicelo

Izinkambo zokuthiwa kwezinye izindaba ziyashicilela izinto ezilandelayo:

• Amathuluzi emithombo yokuqala
• Ukuchazwa kwemithombo
• Ukubheka kwezinsuku ezithile
• Ukuchazwa kwezibalo

Izincwadi zokufunda indlela yokuphuma kwemithombo

Ukufunda indlela yokuphuma kwemithombo kuyisisekelo sokuthiwa kwezinkambo zokugcina amagasi.

Abahlinzi bokuphatha i-PE pipe abanobunye bafanele bakhiphe izincwadi ezingaphansi kwezinto ezilandelayo:

• Isibalo se-resin yomthombo wokuphatha
• Usizo Wesigaba
• Usuku lokuphatha
• Izinkimbinkimbi zokugcwalisa
• Ubungakanani bemithambo
• Amaphethini okuzimela kwezinkinga
• Amabhalo okuhlola ubukhulu

Izidatha zokuzimela ezingcono kungase zibe:

• Isivinini sokugcwalisa (MFR)
• Isikhathi sokuvutha kokuphakanyiswa (OIT)
• Ukuzimela kwezinkinga zokuphakanyiswa kwamanzi
• Ukuchazwa kwezindawo
• Ukuvumela ukuthi izinto zihlola ngokwemisebenzi yazo

Kuma-projekthi amakhulu okubeka izinto ezilungile, ukuthi kufanele kube nesibonelo sokuthi izipipi ezisetyenzisiwe zifanana nezinhlobo eziyayitholakala futhi nezibhalo zokuproducwa.

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Ukuthiwa kwe-PE100-RC: Kungani Ukuthi Kuzodingeka Ukuphakanyiswa Kwemithambo Yokuziphatha

Ngaphezulu Kwemithambo Yokuziphatha Yezindaba Zokubaluleka

Imithambo yokuziphatha yezindaba zokubaluleka yase-ISO 4437 iyathola izinto eziphambili ezifana ne-:

• Izilinganiso
• Ukuhlanza kwemithambo yokuziphatha
• Ubukhulu bokuphatha imithombo

Kodwa, izinkulungwane ze-PE100-RC zihlalwe ngokupheleleyo ukuthi zibe nesibonelo esikhulu sokukhathazeka kwezindlela zokugcina kwezindlela zokugcina.

Ukuthi kubonakala ukuthi kubhekene nokuthi kubhekene kusobala ngokusebenzisa imithambo eyengeziwe, futhi kufaka kuwo:

• Ukuthiwa kwe-Full Notch Creep (FNCT)
• Ukuthiwa kwe-Notched Pipe (NPT)
• Ukuthiwa kwe-strain hardening modulus lapho kuyadingeka

Le mithambo iyathola ubukhulu bekho lokukhathazeka kwezindlela zokugcina nokuphakanyiswa kwezindlela zokugcina ngeminyaka yezindlela zokuziphatha.

Kubalulele kwezinkokhelo zokuthenga iziphiphi zesigashe se-PE100-RC, kubalulekile ukuthi uqinisekise:

• Umbala wokugcina owenteka ngempela
• Ukuhlanzwa kwezinye izindaba
• Amaphaphezi okuzifunda okuxhulunywe nesikhundla esisuselwe
• Ukuthiwa kwezibalo zezigaba

Lokhu kuvikela amathuba okukhishwa kwesikhundla noma ubungafanele kwezimali zokuproducwa.

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Ukusebenzisa kwezizwe zonke nokuthenga iziphiphi zesigashe se-ISO 4437

Izistandadi zezizwe nezinkinga zomkhakha

ISO 4437 isiqiniseko esihlukeneyo esihluke kakhulu njengesiquketho esingaphansi kwezizwe zokusebenzisa iziphiphi zesigashe zase-PE kumthambo wokuhambisa izigashe zokufana.

Izindawo ezahlukene mhlawumbi ziyasebenzisa izinkinga ngamatolo awo noma ngamathuluzi okulawula.

Uluhlelo

Amathuluzi wesigashe e-Europe ayasebenzisa ngokuvamile:

• IN 1555 isigaba
• Amaziko okusebenzisa ISO 4437

Amathuluzi aseNingizimu Afrika nezifundo zezinkampani ezingaphansi kwezinye zingadingeka ngokwesifundo esihlukaniswe.

United Kingdom

UK ibuyela usebenzisa amasiphekelo aseziphakeme aseziyizwe ezisebenzisa ipaipi yepheleli yaseNingizimu Afrika ngamandla emithuluzi yezizwe nezifundo zezinkampani.

Asia nezizwe ezingaphansi kwezinye

Izizwe eziningi ze-Asia, Afrika, ne-Latin America ziyasebenzisa amasiphekelo ase-ISO kumaprojekthi wokuphatha izinto, ikakhulu lapho amasiphekelo aseziphakeme aseziphakeme asidingeka.

Kubabuyi abasebenza kuzo zonke izizwe, ukuthi kufanele kube nesiphekelo se-ISO 4437 sikhumbuzela ukuthi:

• Uhlobo Lwemali
• Ubukhokeleli Bokudala
• Ukubhalwa kweziprojekthi zaseziphakeme
• Ukusebenza kwezinhlangano zokuphatha izinto ngokufanayo

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Ngaphezu kwe-ISO 4437: Amasiphekelo okusiza kwezinhlangano zokuphatha izinto zasepeleli

Imibhalo Yezifundo, Ukuzilungiselela, Nokusebenzisa

Nakuba i-ISO 4437 iyachaza imithwalo yokusebenza kwezihlathi zase-Polyethylene (PE) esebenzisa kubukhala kwezinye izindawo, ubukhulu bekugcina ukuthi isistimu yonke ibe yisikhundla sokuphatha kubalulekile ngokwesibhalo esingaphansi nokusebenzisa kwezindlela zokufunda.

ISO 13479 – Ukuzilungiselela Ukuthi Kukhona Ukuthi Kusheba Ngokushesha

ISO 13479 iyachaza indlela yokuzilungiselela okuyizihlathi ezinomthwalo wokuzilungiselela ukuthi kusheba ngokushesha kwezihlathi zase-Polyethylene.

Lokhu kuzilungiselelo kubalulekile kakhulu kumateriali we-PE100-RC nokuzilungiselela ubukhulu bekugcina kwezinye izindawo.

ISO 12176 – Izinkampani Neziphakathi Zokuxhuma Kwezihlathi Zase-PE

Izinhlangano zasegas zase-PE ziyaphatha ngokuxhumana kokuphelele, futhi kuzofaka:

• Ukugxilwa Ngokuphakama
• Ukugxilisa ngokusebenzisa i-ekhilekthro

Ukuxhumana okuphelele nokusebenzisa izinkampani eziqinisekisiwe zikusiza ukuthi isistimu isebenze ngokuphelele ngaphandle kokuthi kushebe.

ISO 15494 – Izinhlangano Zase-Thermoplastic Zasezindawo Zokusebenza

ISO 15494 iyachaza imithwalo yokusebenza kwezinhlangano zase-Thermoplastic zasezindawo zokusebenza, futhi kuzofaka imithwalo yemateriali nezinhlobo zokusebenza kwezindawo zokusebenza.

ISO 4427 – Imiyilo Yekhanda Yokugcina Amanzi

ISO 4427 iyakombisa imiyilo yekhanda yokugcina amanzi yezinkulungwane zokugcina amanzi.

Ngoba izinkinga zokugcina amanzi nezokugcina igasi zinamathuba ahlukeneyo, ukukhetha isitandardo esihluke siyisisekelo sokuthi isikhundla siphumelele:

• ISO 4437 → ukugcina igasi elihluke
• ISO 4427 → izinkinga zokugcina amanzi

Ukusebenzisa izinkulungwane nezitandardo ezihluke ngokwezinga zokusebenza kuzokuvikela ukukhetha iprodukthi engafanele futhi kuzokuvikela ukuthi isikhundla siphumelele.

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Abathengi Bafanele Bakhangela Nini Bakathenga Imiyilo Yekhanda Yokugcina Igasi Yase-ISO 4437

Ukukhetha umthengi wemiyilo yekhanda yokugcina othembekile kufanele kubhekwe kabanzi kunezimali zeprodukthi.

Abathengi abanomthwalo bafanele bakhangela:

Umbhalo Wenzinkulungwane

• Ukuthi i-PE80 noma i-PE100 yisikhundla sokubhalwa
• Izinformesheni zomthengisi wematerial
• Amabhukhwezi we-material

Isitifiketi somkhiqizo

• Ukuqiniseka kwe-ISO 4437
• Ukuqiniseka kwe-EN 1555 lapho kufanele
• Amabhukhwezi amathathu

Ukulawulwa Kwekhwalithi

• Amarekhodi wezifundo zokuphefumula ngamandla
• Amabhukhwezi wezifundo zokubhekana nezilinganiso
• Ukuthiwa kwezibalo zezigaba
• Ukubamba Okuphatha

Ukwenza kwezinkambo

• Izinkampani zokugcina ezintsha
• Ithimba lesayensi elithembekile
• Ukuhlanza okuphelele kokuproducwa
• Thumela okuhlangenwe nakho

Umthunywa wamaphutha we-PE otholakala kanye nesifundo sezibalo esithile kufanele abe nomthwalo wamaphutha okuphatha izibalo zokusebenza nokubona ukuthi iprodukthi iyasebenza ngokulinganayo ngasinye sesikhathi sokusebenza kwisiprojekthi.

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Imibuzo Emaninzi (FAQ)

Ubukhulu bokusebenza okuncane bamacandelo we-PE ngaphansi kwe-ISO 4437 bungaphi?

Amacandelo we-PE atholakala ngokulandela izindlela zokusebenza zesi-ISO 4437 ayatholakala ukuze abe nemkhulu wokusebenza okuncane wezinkulungwane ezimbili ngaphansi kwezindlela zokusebenza eziqondiswayo. Ukutholakala kwezincwadi zokusebenza nokusebenza ngokulinganayo kungasiza ukuthi amacandelo we-PE asebenze ngokulinganayo ngeminyaka eyingaphezu kwezinkulungwane ezimbili.

Izinto zokwenza zingaphi ezenziwa ngokuvamile ngokulandela i-ISO 4437?

Izinto zokwenza ezenziwa ngokuvamile ziyi-PE 80 ne-PE 100. I-PE100 inamandla amaningi kanye nokusebenza ngokuphelele kwezinqumo, futhi i-PE100-RC inamandla amaningi ekuboniseni ukuthi akaboni ukuthi kusobala kancane.

Ukutholakala kwe-ISO 4437 kuboniswa njani?

Ukutholakala kuboniswa ngokuzimela kwezinto zokwenza, ukuphatha kwezinhlobo zokusebenza, ukubonakalisa ukuthi kuyasebenza ngokulinganayo, kanye nokutholakala kwezincwadi zokusebenza, kanye nokutholakala kwezincwadi zokutholakala kwezinye izindaba zokutholakala zokusebenza ngokulandela izindlela zokusebenza zezindawo.

Izizifundo zingaphi ezenziwa ukubonisa ukuthi i-PE100-RC isebenza ngokulinganayo?

Amathuba we-PE100-RC ayavamiswe ngokuvamisa kwezindlela zokuphakama kwezinqanaba ezincinci njengezindlela zokuvamisa kwezinkqubo zokuphakama kwezinqanaba (FNCT) nezindlela zokuvamisa kwezinkqubo zokuphakama kwezinqanaba (NPT).

Kuyiphi umahluko phakathi kwe-ISO 4437 ne-ISO 4427?

I-ISO 4437 iyasebenza kwezinkqubo zokusebenzisa i-polyethylene zokusawula izinkqubo zokuthengiswa kwezinkqubo zokuthengiswa, ngakho-ke i-ISO 4427 iyasebenza kwezinkqubo zokusebenzisa i-polyethylene zokusawula izinkqubo zokuthengiswa kwezinkqubo zokuthengiswa.

Ngini na ukukhetha umthwali wokusebenza kwe-ISO 4437 wezinkqubo zokusebenzisa i-polyethylene?

Abathengi baya kubona amarekodi okuhlanzwa, ukulandela kwemithwalo yomthwali, ubukhulu bekuproducwa, izindlela zokuhlola ubukhulu, nokuthuthukisa kwezintechiniki kabusha ngaphambi kokukhetha umthwali.