Paipa Rino Whakarewahia Porowhita mō te Paipa Hau Taiao o raro whenua
Whakamōhio mai:
He mea nui te mahi a ngā paipa hau māori o raro whenua ki te tuku i tēnei rauemi utu nui ki ngā kāinga, ki ngā pakihi me ngā ahumahi. Hei whakarite i te haumaru me te whai huatanga o ēnei paipa, he mea nui kia whakamahia ngā rauemi tika me ngā tukanga whakarewa i te wā hanga. Ka tūhuratia e mātou te hiranga o te paipa maitai whakarewa porowhita me te hiranga o te whai i ngā tikanga whakarewa paipa tika i te wā e mahi ana mepaipa hau māori o raro whenua.
Paipa porowhita whakarewa:
He mea rongonui te paipa porowhita i roto i te hanganga o ngā paipa hau maori i raro i te whenua nā tōna kaha me tōna roa. Ka hangaia ēnei paipa mā te piko i tētahi rīpene maitai tonu kia rite ki te porowhita, kātahi ka whakapiripirihia i te taha o ngā hononga. Ko te hua he paipa he hononga kaha, hiri hoki e taea ai te tu atu i ngā pēhanga nui o waho, me te urutau ki ngā nekehanga o te whenua. Mā tēnei hanganga ahurei ka...paipa maitai porowhita kua whakapirihiahe mea tino pai mō ngā paipa o raro whenua ina nui te pumau.
Āhuatanga Mīhini
| Taumata A | Taumata B | Tau C | Tau D | Tau E | |
| Kaha tuku, min, Mpa(KSI) | 330(48) | 415(60) | 415(60) | 415(60) | 445(66) |
| Kaha kume, min, Mpa(KSI) | 205(30) | 240(35) | 290(42) | 315(46) | 360(52) |
Te Hanganga Matū
| Huānga | Te Hanganga, Teitei, % | ||||
| Taumata A | Taumata B | Tau C | Tau D | Tau E | |
| Waro | 0.25 | 0.26 | 0.28 | 0.30 | 0.30 |
| Manganēhi | 1.00 | 1.00 | 1.20 | 1.30 | 1.40 |
| Whēkau | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
| Whāriki | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Whakamātautau Waipūmau
Me whakamātautau ia roa o te paipa e te kaihanga ki te pēhanga wai-pūmau ka puta he ahotea i roto i te pakitara o te paipa kāore i raro iho i te 60% o te kaha tuku iti rawa kua tohua i te pāmahana rūma. Me whakatau te pēhanga mā te whārite e whai ake nei:
P=2St/D
Ngā Rerekētanga e Whakaaetia ana i roto i ngā Taumaha me ngā Ahu
Me paunatia motuhake ia roa o te paipa, kaua hoki tōna taumaha e neke atu i te 10% neke atu i tōna taumaha matapae, 5.5% rānei i raro iho i tōna taumaha matapae, e tatauhia ana mā te whakamahi i tōna roa me tōna taumaha mō ia wae roa.
Kaua te whānui o waho e neke atu i te ±1% mai i te whānui o waho kua tohua.
Kaua te matotoru o te pakitara i tētahi wāhi e neke ake i te 12.5% i raro i te matotoru pakitara kua tohua.
Roa
Roa matapōkere takitahi: 16 ki te 25 putu (4.88 ki te 7.62m)
Roa matapōkere takirua: neke atu i te 25 putu ki te 35 putu (7.62 ki te 10.67m)
Ngā roa ōrite: te rerekētanga e whakaaetia ana ±1inihi
Ngā mutunga
Me whakapaipai ngā puranga paipa ki ngā pito papatahi, ā, me tango ngā kōhao i ngā pito.
Ina tohua te pito paipa hei pito piko, me 30 ki te 35 nekehanga te koki
Ngā tukanga whakarewa paipa:
Tikangā tukanga whakarewa paipahe mea nui ki te roa me te haumaru o ngā paipa hau maori o raro i te whenua. Anei ētahi āhuatanga nui hei whakaaroaro māu:
1. Ngā tohu mātauranga mō te kaiwhakarewa:Me utu ngā kaimahi whakarewa whai tohu, whai wheako hoki, kia mōhio ai rātou kei a rātou ngā tiwhikete me ngā pūkenga e tika ana hei whakahaere i ngā tikanga whakarewa motuhake e hiahiatia ana mō ngā paipa hau māori. Mā tēnei ka āwhina i te whakaiti i te mōrearea o ngā hapa whakarewa me ngā turuturu pea.
2. Te whakarite me te horoi i ngā hononga:He mea nui te whakarite tika i te hononga i mua i te whakarewa. Kei roto i tēnei ko te tango i ngā paru, ngā para, ngā poke rānei ka pā kino ki te kounga o te whakarewa. Hei tāpiri, mā te whakapiko i ngā taha o te paipa ka āwhina i te hanga i tētahi hononga whakarewa kaha ake.
3. Ngā tikanga whakarewa me ngā tawhā:Me whai i ngā tikanga me ngā tawhā tika mō te whakarewa kia whiwhi ai i ngā whakarewa kounga teitei. Me whai whakaaro te tukanga whakarewa ki ngā āhuatanga pēnei i te matotoru o ngā paipa, te tūnga whakarewa, te hanganga hau, me ētahi atu. E taunakihia ana kia whakamahia ngā tukanga whakarewa aunoa pēnei i te whakarewa pewa whakarewa hau (GMAW) te whakarewa pewa ruku rānei (SAW) kia rite ai ngā hua, kia iti ake ai hoki ngā hapa tangata.
4. Tirotiro me te Whakamātautau:He mea nui te tirotiro me te whakamātautau hōhonu i te whakarewa hei whakaū i tōna kounga me tōna pono. Mā ngā hangarau pēnei i te whakamātautau kore-whakangaro (NDT), tae atu ki te whakamātautau hihi-X, te whakamātautau ultrasonic rānei, ka taea te kite i ngā hapa pea ka whakararu i te pono o te paipa mō te wā roa.
Hei whakamutunga:
Ko te hanga paipa hau māori i raro i te whenua mā te whakamahi i ngā paipa maitai porowhita kua whakarewahia me whai i ngā tikanga whakarewa paipa tika. Mā te utu i ngā kaimahi whakarewa whai tohu, te whakarite marie i ngā hononga, te whai i ngā tikanga whakarewa tika, me te tirotiro marie, ka taea e tātou te whakarite i te haumaru, te pakari, me te whai huatanga o ēnei paipa. Mā te aro nui ki ngā taipitopito i roto i te tukanga whakarewa, ka taea e tātou te tuku maia i te hau māori hei whakatutuki i ngā hiahia pūngao o ō tātou hapori, me te whakatairanga i te oranga taiao me te haumaru o te marea.
