Izixhobo zokuvala ivalvu zizinto ezibalulekileyo ekuqinisekiseni ukhuseleko emsebenzini, ingakumbi kumashishini apho ukukhutshwa kwamandla ayingozi kuyinkxalabo. Esinye isiganeko esiphawulekayo esibonisa ukubaluleka kwezi zixhobo senzeke kwi-2005 kwisityalo sekhemikhali eTexas. Ivalve yavulwa ngempazamo ngexesha lokugcinwa kwesiqhelo, okukhokelela ekukhutshweni kweegesi eziyityhefu kunye nogqabhuko-dubulo oluyintlekele. Esi siganeko sagxininisa imfuneko yokuvalwa okuqinileyo/i-tagout (i-LOTO) iprothokholi ukuthintela ukusebenza okungagunyaziswanga okanye ngempazamo koomatshini kunye neenkqubo. Sinale mvelaphi engqondweni, makhe siphonononge ukuba zeziphi izixhobo zokuvala iivalvu, zisetyenziswa njani, kwaye kutheni zibalulekile.
Izixhobo zokuvala ivalvu ziyimfuneko ekuqinisekiseni ukuba oomatshini kunye nezixhobo zihlala zingasebenzi ngokukhuselekileyo ngexesha lokulondolozwa nokulungiswa. Ngokutshixa ngokwasemzimbeni ivalve endaweni, ezi zixhobo zithintela ukukhululwa ngengozi kwamandla ayingozi, zikhusela abasebenzi kwingozi enokwenzeka.
Ziziphi izixhobo zokuvala iValve?
Izixhobo zokuvala ivalvu ziindlela zokhuseleko eziyilelwe ukwahlula imithombo yamandla ukuqinisekisa ukuba oomatshini kunye nezixhobo azinakwenziwa zisebenze ngelixa kulungiswa okanye kulondolozwa. Ezi zixhobo ziza ngeendlela ezahlukeneyo kwaye zisetyenziswa kumashishini apho ukukhutshwa okungalindelekanga kwamandla ayingozi kunokubeka ingozi enkulu yokhuseleko. Iindidi eziqhelekileyo ziquka ukuvalwa kwevalve yebhola, ukuvalwa kwevalve yesango, kunye nokuvalwa kwevalve yebhabhathane.
Eyona njongo iphambili yezixhobo zokuvala ivalve kukubonelela ngomqobo obambekayo othintela ukuguqulwa kwesivalo. Lo mqobo uqinisekisa ukuba i-valve ihlala kwindawo ekhuselekileyo, nokuba ivulekile okanye ivaliwe, kuxhomekeke kwiimfuno zenkqubo yokugcina. Ukongeza kwisitshixo esibonakalayo, ezi zixhobo zihlala zibandakanya indlela yokuphawula ebonelela ngolwazi olubalulekileyo malunga nemeko yokutshixa, njengegama lomntu onoxanduva lokutshixa kunye nomhla wokusetyenziswa.
Iindidi zeZixhobo zokutshixa iValve
Kukho iintlobo ezininzi zezixhobo zokuvala ivalve, nganye iyilelwe ukukhawulelana nolungelelwaniso lwevalvu eyahlukeneyo kunye nokusetyenziswa. Ukuqonda iintlobo ezahlukeneyo kunokunceda ekukhetheni isixhobo esifanelekileyo kwiimfuno ezithile:
Ukuvalwa kweValve yeBhola
Izitshixo zevalve yebhola ziyilelwe ukuba zilingane phezu komqheba weevalvu zebhola, zithintele ngokufanelekileyo umqheba ekujikeni. Oku kutshixwa ngokuqhelekileyo kuyalungiseka ukulungiselela uluhlu lweesayizi zomqheba. Zisetyenziswa ngokubanzi kuba iivalve zebhola ziqhelekile kwiindawo ezininzi zoshishino.
Isixhobo sisebenza ngokufaka isibambo kwikhava yokukhusela ekhuselwe ngesitshixo. Ngabasebenzi abagunyazisiweyo kuphela abanesitshixo okanye indibaniselwano abanokususa isitshixo, baqinisekise ukuba ivalve ayinakuvulwa okanye ivalwe ngokungeyonjongo. Olu hlobo lokuvala ngaphandle luluncedo kakhulu kwiinkqubo ezibandakanya ulwelo okanye iigesi, apho ukuvulwa ngempazamo kunokukhokelela ekuchithekeni, ekuvuzeni, okanye ekudibaneni koxinzelelo oluyingozi.
Ixesha lokuposa: Aug-31-2024