Te Hoahoa Pūnaha Paipa mō ngā Whare Hiko Pūnaha Ā-Wharewha
Ka whakamahia e ngā tipu hiko waiariki te pūngao wera mai i roto i te whenua hei whakaputa hiko pono, pumau hoki. Kei muri i ngā tāwhana me ngā whakaputa hiko e whakanuia ana, kei reira tētahi wāhanga nui anō hoki: ko te pūnaha paipa. Ka haria e te pūnaha paipa waiariki te wai wera (he ranunga o te mamaoa, te wai wera/tote, me te hau kāore e taea te whakapūtā) mai i ngā puna whakaputa ki ngā whare mata, ka wehea ngā āhua wai, ka tukuna te mamaoa ki te tāwhana, ā, ka whakahaere i te tote me te wai whakapūtā hei werohanga anō. Nā te āhua waikura, te tauine, te pāmahana teitei, me te āhua rua-wāhanga o ngā waiariki, me tino pakari ake te hoahoa pūnaha paipa i ngā whakaurunga paipa ahumahi noa.
1. Kia mārama ki ngā āhuatanga o ngā wai wera whenua
Ko te taahiraa tuatahi i roto i te hoahoa ko te mārama ki ngā āhuatanga o te wai: te pāmahana, te pēhanga, te tere rere, te nui o ngā totoka rewa, te pH, te nui o te CO₂/H₂S, me te pūmanawa mō te hanganga o ngā putunga pēnei i te silica, te calcite, te sulfides rānei. Ko ngā wai wera whenua ka taea te mamaoa maroke, te nuinga kohu (kohu tere), te nuinga wai (tote i roto i ngā pūnaha rua), te ranunga rua-wāhanga rānei mai i te puna. Ka pāngia ia momo e te kōwhiringa rauemi, te matotoru o ngā paipa, ngā whakaritenga whakamahana, me te whirihoranga taputapu (ngā wehewehe, ngā horoi, ngā whakangāwari).
Hei tāpiritanga, me aromatawai anō hoki te hoahoa i ngā mōrearea o te waikura me te horo. Ka puta te waikura i ngā āhuatanga o te H₂S, te CO₂, te pūhaumāota, me te pH; i te mea he maha ngā wā ka puta te horo i roto i ngā rerenga e rua-wāhanga, i ngā rerenga rānei me ngā matūriki totoka. Nā te whakakotahitanga o ngā pāmahana teitei me ngā matū kaha, ko te whiriwhiri rauemi me te tiaki waikura tetahi o ngā whakataunga tino nui.
2. Te hoahoanga o ngā paipa: mai i te puna ki te tipu hiko
Ko te tikanga whānui, ko ngā mea kei roto i tētahi pūnaha paipa waiariki mata:
1. Ngā paipa pane puna: e hono ana i te puna whakaputa ki te pūnaha kohikohi.
2. Whatunga kohikohi mamaoa/tote: ka rere te wai mai i ētahi puna ki tētahi teihana wehewehe, ki te tipu hiko rānei.
3. Ara mamaoa matua: ka haria te mamaoa mākū/maroke ki te tāpine.
4. Paipa tote/waipiro: ka rere te wai wehe e toe ana, te waipiro rānei ki te werohanga anō.
5. Pūnaha hauhautanga me te pūnaha hau kore-whakapūpū (NCG): ka whakahaere i ngā hau kore-whakapūpū kia kore ai e whakaiti i te whai huatanga o te whakapūpūpū.
I te wāhanga ariā, ka whakatauhia e te kaihoahoa mēnā ka wehea tata ki te puna (wehewehe papa puna) ka wehea rānei i waenganui (wehewehe pokapū). Ka taea e te wehenga tata-puna te whakamama i ngā raruraru rere-rua-wāhanga i roto i ngā paipa tawhiti, engari ka nui ake te nui o ngā taputapu me te hiahia mō ngā mahi maha. Ka māmā ake ngā mahi i te wehenga pokapū engari me whai hoahoa paipa rua-wāhanga uaua ake.
3. Te whakatau i te diameter o te paipa me ngā tātaitanga waipēhi
Ka whakatauhia te whānui o te paipa e te mate pēhanga e hiahiatia ana, te tere rere, me ngā herenga mahi (hei tauira, te kaha o te hama wai, te pupuhi rānei i roto i te rere ā-wāhanga e rua). I roto i ngā paipa mamaoa, ka nui ake te mate pēhanga me te mōrearea o te horo, engari ka iti rawa te tere ka arahi ki te kohikohinga o te wai whakapūhau me te kore pumau o te rere. I roto i ngā paipa tote, me nui te tere hei ārai i te whakatō, engari kaua e nui rawa hei whakanui ake i te horo.
Ko ngā tātaitanga waipēhi ko:
– Te hekenga o te pēhanga nā te waku (te ngaronga o te waku), ngā huringa teitei, me ngā hononga (ngā takirere, ngā tuke, ngā tī).
– Tauira wāhanga-rua (mō ngā paipa ranunga wai-mamae), e whai whakaaro ana ki te paheke i waenga i ngā wāhanga, te wāhanga mamaoa, me ngā huringa pea o te tikanga rere i te taha o te paipa.
– Te haukū o te mamaoa i roto i ngā paipa roa kāore i te pai te whakamahana, nā te mea ka puta he haukū i te hekenga o te pāmahana, ā, ka nui ake te tūponotanga o te hama wai.
I roto i te mahi, he maha ngā wā ka mahia te hoahoa whānui i runga i ngā mahi tāruarua: te whiriwhiri i te whānui tīmatanga, te tatau i ngā ngaronga pēhanga me te tere, kātahi ka whakarerekē me te whai whakaaro ki ngā utu paipa, ngā utu papu/whakapūtā (mēnā he mea), me te whai huatanga o te tipu (nā te mea ka whakaitihia te mana o te tāpine e ngā ngaronga pēhanga mamaoa).
4. Ngā rauemi paipa me ngā rautaki ātete ki te waikura
Ko te kōwhiringa rauemi e whakawhirinaki ana ki te matū wai me te pāmahana. He maha ngā pūnaha mamaoa e whakamahi ana i te maitai waro, e tuku ana i te whakahaere pai o te waikura, engari ko ngā raina tote whai rawa i te hauota, iti-pH rānei, me nui ake te ātete ki ngā rauemi pēnei i ētahi maitai kore waikura, maitai koranu, paninga ā-roto rānei. Heoi, ahakoa te maitai kore waikura, kāore i te haumaru i ngā wā katoa nā te mōrearea o te pakaru waikura ahotea i raro i ngā āhuatanga hauota teitei me te pāmahana.
Ko ngā rautaki ātete waikura he huinga o ēnei:
– Te whiriwhiri i ngā rauemi e tika ana i runga i ngā raraunga tauira wai me ngā hua whakamātautau waikura.
– Te whakahaere matū (hei tauira, te werohanga aukati i raro i ētahi tikanga).
– He hoahoa e karo ana i ngā wāhi pūmau me ngā waewae mate, nā te mea he maha ngā wā ka tere ake te waikura o te rohe i ēnei wāhi.
– Te āheinga ki te waikura i te matotoru o ngā paipa, arā, te matotoru tāpiri hei matapae i te angiangi i te roanga o te wā hoahoa.
5. Te whakahaere i te tauine me te paru
He tūmomo mōrearea nui te whakapūtanga ki ngā raina tote me ngā taputapu wehewehe. Ka taea e te silica, te calcite, me ētahi atu kohuke te whakapūtanga ina heke te pēhanga me te pāmahana, ina puta rānei ngā huringa matū (hei tauira, te tango hau CO₂). Me whai whakaaro te hoahoa paipa ki:
– kia mau tonu te tere o te rere me te pāmahana kia kore ai e tere rawa te whiti i ngā āhuatanga kua tino mākūkū,
– whakaitihia ngā wāhi tino pōrearea ka taea te whakaoho i te hanganga o te matūriki,
– te whakarato huarahi mō te horoi poaka/te horoi i ngā wāhi e taea ana (ahakoa he uaua tēnei i te nuinga o te wā mō ngā waiariki),
– te whakamahinga o te hoahoa pōkai e ngāwari ana te wetewete i ngā wāhanga ka putua wawetia.
I roto i ngā mara maha, ka whakahaerehia hoki te whakahaere tauine mā te whakatakoto i ngā rautaki kanapa me te werohanga anō, me te werohanga i ngā matū ārai-tauine ki ētahi wāhi.
6. Te whakamarumaru wera me te whakahaere waikura
Me whakamātao tonu ngā paipa mamaoa hei whakaiti i te ngaronga wera. Ehara i te mea ka whakaiti noa te ngaronga wera i te kounga o te mamaoa, engari ka whakanui ake hoki i te hanganga o te waipū, ka puta ai te hama wai. Nō reira, ko ngā hoahoa e whai ake nei:
– Te whakamarumaru wera me te matotoru i tatauhia i runga i te ngaronga wera me te ōhanga e whai ana (ngā utu whakamarumaru vs. te ngaronga pūngao).
– Whakatakotoria he mahanga mamaoa me te kohua waikeri ki ngā wāhi iti, me ētahi wā motuhake hei tuku i te waikeri i roto i te huarahi whakahaere.
– Te pikinga ōrite o ngā paipa ki te pūwāhi rerenga wai hei ārai i te putunga o te wai whakapūkara.
Mā te whakahaere tika i te wai whakapūkara ka pai ake te pono o te tāpine, ka whakaitihia hoki te tūponotanga o te wiri, te kino rānei nā te hama wai.
7. Hoahoa ā-ringa: te whakawhanuitanga wera, te tautoko, me te ngāwari
Ko te nui o te pāmahana whakahaere o ngā pūnaha waiariki ka nui te horapa o te paipa. Ki te kore e whakaaetia, ka taea e ngā taumahatanga wera te puta he turuturu o ngā flange, he pakaru o te whakarewa, he rerekētanga rānei. Nō reira, ko ngā mea e whai ake nei i roto i te hoahoa mīhini ko:
– Te tātaritanga ahotea paipa mō ngā āhuatanga whakahaere, te tīmatanga, te whakaweto, me ngā āhuatanga ohorere.
– He koropiko whānui, he hononga whānui rānei (kia tūpato, nā te mea ka tāpirihia pea he turuturu e ngā hononga whānui, ā, me tiaki).
– Kua whakanohoia ngā tautoko, ngā punga, me ngā kaiārahi ki te rautaki kia taea ai e te paipa te "neke" i runga i te huarahi e whakawhanuitia ana.
– Te whakamahere huarahi paipa e whakaiti ana i ngā kokonga koi, e whakahaere ana hoki i te urunga atu ki ngā tirotiro.
Nā te mea he maha ngā wā ka whiti ngā paipa i ngā āhua o te whenua pukepuke, me whai whakaaro hoki ki ngā huringa teitei me te taunga o te oneone i roto i te hoahoa o ngā tautoko me ngā turanga.
8. Haumaru, taputapu, me te mana whakahaere
Kei roto i ngā pūnaha paipa waiariki ngā wai wera pēhanga me ngā hau kino pērā i te H₂S. Kei roto i te hoahoa haumaru:
– Ngā takirere wehe me te whakahaere hei whakahaere i te tiaki me te wehewehe whatunga i te wā e pāngia ana.
– He takirere whakaiti pēhanga (PRV) me te pūnaha whakaputanga (pūhau/pūranga) i hangaia mō ngā āhuatanga pēhanga nui rawa.
– Te kimi H₂S, ngā tikanga tango hau, me te whakatakotoranga o te hauhautanga e whai whakaaro ana ki te ahunga o te hau me ngā rohe haumaru.
– Ngā taputapu pēnei i ngā tuku pēhanga, ngā wāhanga pāmahana, ngā mita rere, me te aroturuki i te rerenga wai hei tautuhi i ngā āhuatanga rerekē (hei tauira, ngā hekenga pēhanga e pā ana ki te tauine).
Ka tautokona anō te pono o te pūnaha e tētahi tikanga tīmatanga e whakahaere ana i te whakamahana haere o ngā paipa hei ārai i te ru wera.
9. Te hanga, te whakamātautau me te mahi roa
He mea nui te kounga o te hanga me te tāutanga mō te roa o te ora o te pūnaha. Me tutuki te whakarewa i ngā paerewa, me ngā tirotiro NDT (irahiko/orooro) i ngā hononga nui. I muri i te tāutanga, ka whakahaerehia he whakamātautau wai, he whakamātautau hau rānei e hiahiatia ana, me te whakamaroke me te whakatūnga haumaru. I te wā e whakahaerehia ana, ka aroturukihia e te kaupapa tirotiro ā-wā te waikura, te angiangi o te pakitara, te wiri, me ngā turuturu iti ka huri hei pakaru nui.
Hei tāpiritanga, he mea tino pai te hoahoa o ngā pūnaha paipa waiariki kia "hoa ki ngā mahi tiaki": he wāhi hei whakakapi i ngā takirere nui, he urunga atu ki ngā pūwāhi waikeri, me te ngāwari o te tāuta i ngā pūoko tāpiri i te whānui haere o te mara.
Te Katinga
He tukanga maha-mātauranga te hoahoa pūnaha paipa mō ngā tipu hiko waiariki e whakakotahi ana i te waipēhi, ngā rauemi, te miihini paipa, te hangarau wera, te matū wai, me ngā āhuatanga haumaru. Ko te wero nui i ahu mai i te āhua kaha, e rua-wāhanga, me te putunga o ngā waiariki. Mā te whirihoranga whatunga tika, te tatau āta i te diameter, ngā rauemi tika, te whakahaere i te tauine me te waikura, me te hoahoa haumaru me te ngāwari wera kua whakaarohia pai, ka taea e ngā pūnaha paipa te mahi pumau mō ngā tekau tau. Hei whakamutunga, ehara i te mea he take whai hua anake te pono o ngā paipa, engari he turanga matua mō te whakarite i te mahi pai, te haumaru, me te pumau o ngā tipu hiko waiariki.
