Amapayipi ensimbi ahlanganisiweukuhlolwa kokunamathela kanye nokuhlolwa kokujikeleza kwamanzi ashisayo nabandayo ngokuhambisana ne-EN877, ngokuyinhloko ukuhlola ukuthembeka kwesikhathi eside kanye nokuqina kwezinhlelo zabo zokumboza ezilwa nokugqwala, ikakhulukazi ngaphansi kwezimo zokusebenza zangempela. Lezi zivivinyo zivame ukubhekisa ekumbozweni okusetshenziselwa izindawo zangaphakathi nezangaphandle zamapayipi e-SML (njenge-epoxy resins, i-polyurethanes, kanye ne-cement mortar linings). Ukuhlolwa kokunamathela kulinganisa ngqo amandla okubopha phakathi kokumbozwa kanye nensimbi eyisisekelo yepayipi lensimbi ephonswe. Ukuhlolwa kokujikeleza kwamanzi ashisayo nabandayo kulingisa ukushintshashintsha kwezinga lokushisa okuhambisana namapayipi asetshenziswa ngempela, kuhlola ukuzinza kwesikhathi eside kwesistimu yokumboza ngaphansi kwalezi zingcindezi zokushisa ezishintshanayo.
Ukuhlolwa Kokunamathela
Ukunamathela kwengubo kufanele kuhlolwe kuphela kumasampula avela emikhiqizweni eqediwe ngokuhlolwa okunqunyiwe ngokuhambisana ne-EN ISO 2409, ngale ndlela elandelayo:
- isampula yokuhlola: isigaba okungenani esingu-100 mm ubude obusikiwe kusuka epayipini elimboziwe noma endaweni yokufakelwa okungcono okungenani enobukhulu obungu-DN 100;
- inani lokusikwa: 6;
- isikhala sokusikwa: 2 mm (3 mm sezinto zokumboza ezinobukhulu obuncane obuchazwe umenzi obulingana noma obukhulu kuno-120 µm);
- Imiphumela kufanele ivumelane neThebula 1.
Ithebula 1:
Ukumelana nokujikeleza kwezinga lokushisa
Ukuhlolwa kufanele kwenziwe kuphela kumasampula avela emikhiqizweni eseqediwe. Ukuhlanganiswa kokuhlolwa kufanele kwenziwe imijikelezo engu-1500 yokudlula kwamanzi ashisayo nabandayo ngokuhambisana nesheduli elandelayo:
a) (30 + 1) l yamanzi ekushiseni okungu-(93 + 2) °C esikhathini esingu-1 min, ngesivinini esingaguquki sokugeleza,
b) isikhathi sokuphumula nokukhipha amanzi esingumzuzu owodwa;
c)(30 + 1) l yamanzi ekushiseni okungu-(15 + 5)°C esikhathini esingu-1 min, ngesivinini esingaguquki sokugeleza,
d) isikhathi sokuphumula nokukhipha amanzi esingumzuzu owodwa
Izinga lokushisa lamanzi kufanele lilinganiswe lapho kungena khona.Isibonelo sokusetha ukuhlolwa okuvamile sinikezwe kuMfanekiso 3.
Ngemva kokumisa ukuhlolwa, amapayipi kanye nezinto zokufaka kufanele kugezwe ngokushesha ukuze kususwe noma yimaphi amabala. Amapayipi kufanele ahlukaniswe ngobude bese kuhlolwa ungqimba lwangaphakathi ukuze kutholakale ukuthi lunamabala futhi lugqwala kangakanani okungafanele ludlule amazinga alandelayo:
Izinga lokuqhakaza: Ubukhulu 3, isigaba 3 ngokusho kwe-EN IS0 4628-2:
Izinga lokugqwala: Ri 2 ngokusho kwe-EN IS0 4628-3.
Isikhathi sokuthunyelwe: Agasti-04-2025
