Me pēhea te aromatawai i te mahi a ngā pā raima i roto i te whakaputa pūngao
Ehara i te mea ko ngā tāhuna raima anake te mahi hei pupuri wai me te whakahaere waipuke, engari he wāhanga matua anō hoki i roto i ngā tipu hiko wai (PLTA). I roto i te horopaki o te whakaputanga pūngao, ko te "mahi" o te tāhuna raima ehara i te mea ka aromatawaihia mā tōna kaha hanganga anake, engari mā tōna whai huatanga hoki ki te tautoko i te whakaputanga hiko pumau, haumaru, me te pumau. Ka matapakihia e tēnei tuhinga te aromatawai i te mahi a ngā tāhuna raima i roto i te whakaputanga pūngao mā roto i ngā tohu hangarau, mahi, me te taiao, tae atu ki ngā huarahi aromatawai mahi.
1. Te Mārama ki te Tūranga o ngā Pā Rakau i roto i ngā Pūnaha Hiko Wai
Hei aromatawai tika i te mahi, me mārama tātou ki te tūranga o ngā tāwhana raima i roto i te pūnaha hiko wai whānui. Ko te mahi a ngā tāwhana he hanga puna wai me te hanga i te upoko (he rerekētanga i te taumata wai) e whakaputa ana i te pūngao pūmanawa. Kātahi ka hurihia tēnei pūngao pūmanawa hei pūngao hiko mā roto i ngā tāwhana me ngā whakaputa hiko. Nō reira, he hononga tata te mahi a ngā tāwhana raima ki:
1. Te kaha ki te pupuri i te upoko e tika ana kia pai ai te mahi a te tāpine.
2. Te kaha ki te whakahaere i te tukunga wai (mā te puna wai, ngā kēti wai, te awaawa wai) kia pumau ai te whakaputanga pūngao.
3. Te pono o te hanganga hei ārai i te mōrearea o te rahunga ka aukati i ngā mahi.
2. Ngā Tohu Matua: Te Whakaputa Pūngao me te Whai Hua
Ko te ine tika rawa ko te putanga hiko. Heoi, me pānui ngātahi ngā tatauranga whakaputa hiko me ngā āhuatanga tautoko.
a. Pūngao ā-Tau i Hangaia (Whakaputa Pūngao ā-Tau)
Whakatauritea te pūngao i whakaputaina (MWh, GWh rānei) ki ngā whāinga hoahoa, ki ngā matapae rangahau whaihua rānei. Mena he iti iho te whakaputanga, tātarihia ngā take: nā te hekenga o te rere o te wai, te oneone, ngā here whakahaere, ngā take hanganga/whakahaere rānei.
b. Tauwehenga Pūmanawa
Ko te tauwehenga kaha e whakaatu ana i te tata o te kaha o te miihini whakaputa hiko ki tōna kaha tāuta i roto i tētahi wā kua whakaritea. Ko te tātai whānui ko:
Tauwehenga āheinga = (Pūngao tūturu / Pūngao mōrahi ariā) × 100%
Ko ngā tāhuna e kaha ana ki te pupuri i te wātea me te pikinga o te wai, he pai ake te kaha o ā rātou waipuke, me te whai whakaaro ki ngā tauira o ngā wā me ngā hiahia whakamakuku/waipuke.
c. Te Whai Hua o te Waipēhi me te Ngaronga Pūngao
Ka pāngia hoki te mahi a te pā o te wai e te ngaronga o te upoko nā te waku, te aueue i te putanga wai, me te āhua o te awa wai (penstock). Mēnā ka piki ake te ngaronga o te upoko, ka heke te kaha e tae atu ana ki te tāpine. Ka taea te aromatawai mā te ine i te pēhanga, te tukunga wai, me te tatau i te upoko kupenga.
3. Ngā Tohu Wai me ngā Mahi Pūnaha Wai
Ko te whakaputanga pūngao i roto i ngā tipu hiko wai ka whakatauhia nuitia e te whakahaeretanga o te puna wai. Nō reira, ko te aromatawai i te mahi a ngā tāhuna raima me whakauru i ēnei tawhā wai:
a. Te Pono o te Wātea o te Wai
Te auau o te puna wai ki te tuku wai hei whakaputa ina hiahiatia. Ka taea tēnei te ine mā te ōrau o te wā e mahi ana te tāpine me te kore he here nā te korenga o te rere.
b. Tauira Hurihuri o te Taumata Wai o te Puna Wai
Ko ngā piki me ngā heke o te taumata wai e tohu ana i te kore e tino pai o te mahi, i te kore taurite rānei i waenga i te rerenga mai me te rerenga atu. Ka pāngia hoki te pumau o te pari o te puna wai e ngā piki me ngā heke nui, ā, ka puta pea ngā raruraru hangarau whenua.
c. Te Mahi a te Ara Waipuke
Mā te pai o te mahi a te awaawa e tiaki te tāhuna i ngā wā waipuke nui, ka ārai i ngā mahi a te tipu hiko kei kati nā ngā āhuatanga ohorere. Kei roto i te aromatawai te kaha o te awaawa, te urupare ki te keti, me te tutuki i ngā whakaritenga waipuke hoahoa.
4. Aromatawai Hanganga: Te Haumaru me te Pono o ngā Pā Rakau
Me noho haumaru ngā tāwharau raima mō te wā roa. Kāore he tikanga o te mahi pūngao mēnā ka piki ake ngā mōrearea hanganga. Ko tētahi aromatawai hanganga noa ko:
a. Te Aroturuki i te Hurihanga me te Nekehanga
Whakamahia ngā taputapu pēnei i ngā piezometer, ngā pendulum, ngā extensometer, me ngā ruri whenua hei aroturuki:
– nekehanga whakapae/poutū,
– te āhua rerekē o te tinana o te tāhuna,
– ngā huringa nā te pāmahana me te kawenga wai.
Ko ngā ia nekehanga rerekē he tohu pea mō ngā raruraru o te turanga, ngā kapiti, ngā huringa rānei o ngā āhuatanga o ngā rauemi.
b. Aromatawai Kapiti
Me arotake ngā pakaru o ngā tāhuna raima: mēnā he pakaru iti e whakaaetia ana (he whakahekenga), he pakaru hanganga morearea rānei. Kei roto i te aromatawai:
– te wāhi pakaru,
– te whānui me te pikinga o te whānui i roto i te wā,
– ngā ara turuturu pea.
c. Te Pēhanga o te Rerenga me te Pēhanga Whakaara
Ka taea e te pikinga o te turuturu te whakanui ake i te pēhanga hiki, me te whakaiti i te pumau o te pā. He tohu nui te ine i te rerenga turuturu, te pēhanga pūwero, me te whai huatanga o te pūnaha rerenga wai. Mena ka āraia ngā rerenga wai, ka ngoikore rānei te pūnaha whakapūmau, ka piki ake te mōrearea, ā, ka heke te taumata wai (ka pā ki te whakaputa pūngao).
5. Te Whakatōtō: Te Hoariri Matua o te Pūngao me te Upoko
Ko te whakatōtōtanga o te puna wai te mea tino kitea e whakaiti haere ana i te mahi pūngao. Ka whakaitihia e te whakatōtōtanga te rahinga whai hua o te puna wai, ā, ka taea te whakanui ake i te teitei o raro i te taha o te putanga wai.
Ngā tohu hei aromatawai:
– te tere o te whakatōtō ā-tau,
– ngā panonitanga o te pihi teitei-rahi o te puna wai,
– te auau o ngā whakararuraru ki te mimiti wai nā te paru.
Ko ngā otinga whakahaere ka uru atu ki te horoi, te keri, te whakahaere rānei i ngā mahi hei ārai i te kohikohinga o ngā paru i ngā wāhi nui. Ka taea te aromatawai i te mahi a te tāmi i roto i te whakaputa pūngao mā te whai huatanga o ngā rautaki paru ki te pupuri i te kaha o te puna me te rokiroki.
6. Te Mahi a te Tautoko i ngā Taputapu Ā-Iwi huri noa i te Pā
Ahakoa ko ngā tāhuna raima te arotahi, ka pāngia anō hoki te whakaputanga pūngao e ngā āhuatanga ā-iwi e pā ana, pērā i:
– te wāhi whakauru me te whata para,
– ngā kēti wai me ngā tikanga hiki,
– te karo i ngā awaawa me ngā putanga,
– te tirotiro i te urunga atu ki te rori me ngā pūnaha haumaru.
Hei tauira, mā te kino o te whata para, te kohikohinga rānei o te para, ka whakaiti i te rerenga mai o te wai ki te tāpine, ka heke ai te pūngao, ahakoa he pakari te hanganga o te tāhuna.
7. Ngā Āhuatanga Taiao me te Whakatutukitanga Whakahaere
He mea nui te mahi hou kia iti ake ngā rerenga taiao. He maha ngā tipu hiko wai e hiahiatia ana kia iti ake ngā rerenga taiao. Ki te kore e pērā, ka pāngia pea koe e ngā herenga mahi, e ngā whiu rānei.
Ngā tawhā aromatawai e tika ana:
– te tutuki i te rere iti rawa,
– te kounga o te wai puna (te pāmahana, te hāora rewa),
– te pānga o ngā rerekētanga o te tukunga wai ki ngā pūnaha rauropi o raro,
– te whakahaere ika me ngā ara hekenga mēnā e tika ana.
Ko ngā tāhuna e kiia ana he "pai te mahi" ko ērā e kaha ana ki te whakaputa pūngao me te tutuki i ngā here taiao me te pāpori.
8. Ngā Tikanga Aromatawai: Mai i te Aromatawai Raraunga ki te Tātari Mahi
Hei aromatawai whānui i te mahi a ngā tāhuna raima i roto i te whakaputa pūngao, me mahi ēnei mahi:
1. Kohia ngā raraunga o mua: te teitei o te puna wai, te putanga mai o te wai, te putanga mai o te wai, te whakaputanga pūngao, ngā waipuke, te wā kore mahi o te tāpine, me ngā tuhinga tirotiro.
2. Whakatauritea ki te hoahoa: te pane hoahoa, te kaha o te awaawa, te pihi whakahaere o te puna wai, me te whāinga whakaputa ā-tau.
3. Tātari ia au: rapua ngā tauira o te hekenga o te whakaputanga pūngao, te pikinga o te turuturu, te pikinga rānei o te paru i ia tau, i ia tau.
4. Whakahaerehia ngā tirotiro ā-kanohi me ngā tirotiro taputapu: te aromatawai ā-tinana o te tāhuna, te waikeri, ngā kapiti, me ngā taputapu ārai waipuke.
5. Waihangahia he taupū mahi: hei tauira, he kaute whakakotahi mō ngā āhuatanga pūngao (putanga, tauwehenga kaha), wai (pono), me te haumaru (te turuturu, te whakarerekētanga).
6. Hoahoa ngā mahi whakatikatika: mai i te tiaki auau ki te whakahoutanga nui, tae atu ki ngā huringa ki ngā ture whakahaere puna wai.
9. Whakamutunga
Ko te aromatawai i te mahi a ngā tāhuna raima i roto i te whakaputanga pūngao me whai huarahi maha-āhuatanga. Ahakoa he tohu matua te putanga hiko me te whai huatanga, kāore e ranea mēnā kāore e tika te whakahaere i ngā puna wai, ngā āhuatanga hanganga haumaru, te whakahaere i te oneone, me te mahi pai hei tautoko i te hangarau ā-iwi. Mā te whakakotahi i ngā raraunga whakahaere mō te wā roa, ngā hua aroturuki taputapu, me ngā tirotirohanga mara, ka taea e ngā kaiwhakahaere hiko wai te tautuhi wawe i ngā raruraru me te pupuri i te whakaputanga pūngao pumau me te haumaru.
Ki te hiahia koe, ka taea e au te tāpiri i tētahi tauira o te hōputu "rārangi arowhai aromatawai" (ia rā, ia marama, ia tau) ka taea rānei e au te waihanga i tētahi tauira tohu mahi (KPI) mō tētahi tāwhana raima i roto i tētahi tipu hiko wai.
