1. Ngā ihirangi kaupapa me te whānuitanga o te tono
E whakamārama ana tēnei tikanga i ngā taputapu me ngā mahi hei whakatau i te rere o te moata sima.
E pā ana tēnei tikanga ki te whakatau i te rere o te moata o te sima Portland pungarehu puia, te sima Portland hiato, te sima Portland noa i konatunatua ki te pungarehu puia, te sima Portland para me ētahi atu momo sima kua tohua hei whakamahi i tēnei tikanga.
2. Ngā paerewa tohutoro
Tikanga whakamātautau kaha o te moata sima GB177
GB178 Oneone paerewa mō te whakamātautau kaha o te sima
JBW 01-1-1 Tauira paerewa mō te rere o te moata sima
3. Ko te tikanga kimi i te tere whakaheke wai o te moata e whai ake nei:
3.1 Ngā taputapu me ngā taputapu
A. Ranu moata;
B. Tēpu peke (me tāpiri he pereti karāhe matotoru 5mm);
C. Pae patu porotaka: he mea hanga ki te mea whakarewa, he 20mm te whānui, he 185mm te roa;
D. pokepokea porowhita kōne porowhita me te uhi pokepokea: te rahi o te pokepokea porowhita kōne porowhita, ko te teitei he 60±0.5mm, ko te diameter o runga φ 70±0.5mm, ko te diameter o raro he 100±0.5mm, me ōrite te uhi pokepokea ki te pokepokea porowhita kōne porowhita, te pokepokea kōne porowhita me te uhi pokepokea i hangaia ki ngā rauemi whakarewa;
E. Rūri (awhe ine 300mm) me ngā caliper me te awhe ine 300mm;
F. spatula.
G. Taurite rongoā (1000g te taumaha, e rongo ana i te 1g).
3.2. Te tukanga whakamātautau
3.2.1 Inehia te wai e pau ana i te moata tohutoro
A. Taumahahia te 300 karamu o te sima me te 750 karamu onepū paerewa, ka ringihia ki roto i te kōhua whakaranu. Tīmatahia te mīhini whakaranu, tāpirihia mārire te wai i muri i te whakaranu mō te 5 hēkona, ā, tāpirihia i roto i te 30 hēkona. Kati te whakaoho mō te 3 meneti i muri i te tīmatanga o te mīhini. Waruhia te moata i ngā mata, ka tangohia te paraharaha whakaoho.
B. I te whakaranu i te moata i te wā kotahi, horoia te tēpu, te tokotoko whiu, te pokepokea porowhita kōne tapahia me te taupoki pakitara o roto o te pokepokea, ka whakanoho ki waenganui o te pereti karāhe, ka hipokina ki te kakahu mākū.
C. Ka wehea wawetia te moata whakaranu kia rua ngā paparanga ki roto i te pokepokea ai, ka tāutahia te paparanga tuatahi ki te pokepokea ai kia rua hautoru te teitei, ka whakauruhia te pae whakapiri mai i te taha ki waenganui kia ōrite te whakaurunga kia tekau mā rima ngā wā, kātahi ka utaina ki te paparanga tuarua o te moata, ka tāutahia kia rua henimita te teitei ake i te pokepokea ai porowhita, ka whiua te tokotoko porotaka kotahi kia tekau mā rima ngā wā. I te wā e utaina ana te onepu me te whakapiri, pēhia te matie koeko porotaka ki te ringa kia kore ai e neke.
D. Whai muri i te tāmitanga, tangohia te taupoki o te pokepokea ai, whakamahia he spatula hei waru i te moata e teitei ake ana i te pokepokea ai porowhita kōne kua tapahia, ka murua kia papatahi, kātahi ka hiki mārire i te pokepokea ai porowhita ki runga. Rūrūtia ō ringaringa ki te porowhita o te wira kia peke ai te tēpu peke e toru tekau ngā wā i te tere o te kotahi ia hekona.
E. I muri i te whiu, whakamahia ngā caliper hei ine i te diameter horapa o te raro o te moata, ka tangohia te uara toharite o ngā diameter e rua e poutū ana tetahi ki tetahi hei te horapa o te moata ina whakamahia te wai, e whakaaturia ana i roto i te mm. Ina he 140±5mm te horapa tohutoro o te moata, ko te wai e pau ana ko te wai e pau ana o te horapa tohutoro o te moata.
3.2.2 E ai ki te tikanga 3.2.1, ko te wai i pau i te moata me te rongoā whakaiti wai i eke ki te 140±5mm.
3.3. Ka tatauhia te tere whakaheke wai o te moata kua tukatukahia penei:
Te tere whakaheke wai o te moata (%) = (W0-W1)/ W0 ×100
Ko te w0 — te whakamahinga wai (g) ina ko te horapa o te moata tohutoro he 140±5mm;
W1 — Te whakamahinga wai (g) ina ko te horapa o te moata me te kaihoko whakaiti-wai he 140±5mm.
Ko te uara o te tere whakaheke wai ko te uara toharite tātaitanga o ngā tauira e toru.
Wā tuku: Paenga-whāwhā-25-2024