Ka hangaia te paipa maitai porowhita mā te huri i te maitai hanganga waro-iti, te rino hanganga koranu-iti rānei ki roto i te paipa, kia rite ki tētahi koki o te rārangi porowhita (e kiia nei ko te koki hanga), kātahi ka whakarewahia ngā hononga paipa.
Ka taea te whakamahi mō te whakaputa i te paipa maitai diameter nui me te maitai rīpene whaiti.
Ko te whakatakotoranga o te paipa maitai porowhita e whakaatuhia ana e te diameter o waho * te matotoru o te pakitara.
Me whakamātautau te paipa whakarewa mā te whakamātautau waipū, te kaha kume me te piko matao, ā, me tutuki te mahi o te hononga whakarewa i ngā whakaritenga o te whakatakotoranga.
Kaupapa matua:
Ko te paipa maitai porowhita te nuinga e whakamahia ana mō te tuku hinu me te hau māori.
Tukanga whakaputa:
(1) Ngā rauemi mata: te koiri maitai, te waea whakarewa me te rere. Me tirotiro tino tika te tinana me te matū i mua i te whakaputanga.
(2) Ka whakarewahia te pane me te hiku o te koiri kia honoa ai ngā koiri e rua, kātahi ka whakamahia te whakarewa pewa ruku i raro i te waea kotahi, ngā waea takirua rānei, ā, ka whakamahia te whakarewa pewa ruku aunoa mō te whakarewa i muri i te hurihanga ki roto i te paipa maitai.
(3) I mua i te hanganga, me whakataurite te rino rīpene, me kuti, me whakarite, me horoi te mata, me kawe, ā, me piko i mua.
(4) Ka whakamahia te ine pēhanga pā hiko hei whakahaere i te pēhanga o te rango hinu pēhi i ngā taha e rua o te kaikawe kia pai ai te kawe i te rino rīpene.
(5) Mō te hanga porotaka, whakamahia te mana whakahaere o waho, te mana whakahaere o roto rānei.
(6) Whakamahia te taputapu whakahaere āputa whakarewa hei whakarite kia tutuki i te āputa whakarewa ngā whakaritenga whakarewa, kātahi ka taea te whakahaere tika i te diameter o te paipa, te hē o te whakatakotoranga me te āputa whakarewa.
(7) E whakamahia ana te mīhini whakarewa ā-roto me te mīhini whakarewa ā-waho o Amerika Lincoln Electric mō te whakarewa pewa i raro i te wai kotahi, i ngā waea takirua rānei, kia pumau ai te mahi whakarewa.
(8) Ka tirotirohia ngā hononga whakarewa katoa mā te whakamahi i te taputapu tirotiro hapa aunoa tonu ā-ipurangi ultrasonic hei whakarite kia 100% te whakamātautau NDT e kapi ana i ngā hononga whakarewa porowhita katoa. Mēnā he hapa, ka whakaoho aunoa, ka rehuhia hoki ngā tohu, ā, ka whakatikatikahia e ngā kaimahi whakaputa ngā tawhā tukanga i ngā wā katoa kia kore ai e puta ngā hapa i te wā tika.
(9) Ka tapahia te paipa rino kia kotahi te wahi mā te mīhini tapahi.
(10) Whai muri i te tapahi i ia paipa maitai kotahi, ka tirotirohia ia puranga paipa maitai ki tētahi pūnaha tirotiro tuatahi kia tirohia ai ngā āhuatanga miihini, te hanganga matū, te āhua hanumi, te kounga o te mata o te paipa maitai me te NDT kia mōhio ai kei te tika te tukanga hanga paipa i mua i te whakaurunga mana ki te hanga.
(11) Me tirotiro anō ngā wāhanga kei reira ngā tohu kitea hapa oro tonu i runga i te hononga whakarewa mā te whakamahi i te ultrasonic ā-ringa me te hihi-X. Mēnā he hapa, i muri i te whakatikatika, me tirotiro anō te paipa ki te NDT kia whakaūtia rā anō kua whakakorea ngā hapa.
(12) Me tirotirohia te paipa o te hononga whakarewa tuara me te hononga whakarewa porowhita e hono ana i te hononga-T mā te pouaka whakaata hihi-X, mā te kiriata rānei.
(13) Ka whakamātauhia ia paipa rino ki te wai. Ko te pēhanga me te wā whakamātautau ka tino whakahaerehia e te taputapu kimi rorohiko o te pēhanga wai o ngā paipa rino. Ka tāia aunoatia, ka tuhia hoki ngā tawhā whakamātautau.
(14) Ka mīhinihia te pito o te paipa kia tika ai te whakahaere i te poutū, te koki piko me te mata o te pakiaka.
Te wā tuku: Hurae-13-2022