He whānuitia te whakamahinga o ngā takirere porowhita, ā, he maha ngā momo. Ko ngā momo matua ko ngā takirere porowhita pupuhi, ngā takirere porowhita flange, ngā takirere porowhita miro ā-roto, ngā takirere porowhita kowiri tira, ngā takirere porowhita DC, ngā takirere porowhita ngira, ngā takirere porowhita āhua-Y, ngā takirere porowhita koki, me ētahi atu. Momo takirere porowhita, takirere porowhita tiaki wera, takirere porowhita maitai whakarewa, takirere porowhita maitai hanga; he mea tino nui te whiriwhiri i te momo, me whiriwhiri kia rite ki ngā āhuatanga o te reo, te pāmahana, te pēhanga me ngā āhuatanga mahi. Ko ngā ture whiriwhiri motuhake koia ēnei:
1. Me whiriwhiri te takirere hau i runga i te paipa, i te taputapu rānei o te reo pāmahana me te pēhanga teitei. Pērā i ngā paipa pāmahana me te pēhanga teitei i roto i ngā tipu hiko wera me ngā pūnaha hinu matū;
2. Me whakamahi te takirere porowhita rere-tika ki te paipa ina kore e tino kaha ngā whakaritenga ātete kawe hiko;
3. Ka taea te whakamahi i te takirere ngira, te takirere taputapu, te takirere tauira, te takirere ine pēhanga, me ētahi atu mō te takirere porowhita hau iti;
4. He whakatikatika rere, he whakatikatika pēhanga rānei, engari kāore i te teitei ngā whakaritenga mō te tika o te whakatikatika, ā, he iti noa te diameter o te paipa. Hei tauira, i runga i te paipa he diameter ingoa ≤50mm, he pai ake te whakamahi i te takirere aukati hau me te takirere whakahaere hiko;
5. Mō te rauemi whakatiotanga ngāwari ki te whakapakeke, whiriwhiria he takirere kati tiaki wera;
6. Mō ngā taiao pēhanga tino teitei, me whiriwhiri ngā takirere porowhita hanga;
7. I roto i te hanga ahumahi hangai, me whiriwhiri e ngā maniua iti me ngā maniua nui te takirere porowhita pēhanga teitei, te takirere koki pēhanga teitei rānei me te pēhanga ingoa PN160 pēhanga ingoa 16MPa, te pēhanga ingoa PN320 rānei 32MPa;
8. I roto i te awheawhe desiliconization me ngā paipa e ngāwari ana ki te coke i roto i te tukanga alumina Bayer, he ngāwari ki te whiriwhiri i te takirere porowhita rere-tika, i te takirere whakatere rere-tika rānei me te tinana takirere motuhake, he nohoanga takirere tango, me te takirua hiri carbide sima;
9. I roto i ngā kaupapa tuku wai me te whakamahana i roto i ngā hanganga tāone, he iti ake te ara whakaingoa, ā, ka taea te whiriwhiri i te takirere kati hau, te takirere taurite, te takirere pūwero rānei, hei tauira, he iti iho i te 150mm te ara whakaingoa.
10. He pai ake te whiriwhiri i te takirere porowhita kawemai mō te hte mamaoa pāmahana teitei me ngā pāpāho paitini me te kino.
11. Mō te takirere porowhita waikawa-pūtake, whiriwhiria te takirere porowhita kowiri tira, te takirere porowhita rānei kua whakakikoruatia ki te wheorā.
Wā tuku: 29 Paenga-whāwhā 2022
