Lo mbhalo uhlose ukunciphisa ukuvulwa ngengozi kwama-valve asetshenziswa ngesandla ezinhlelweni zokuqandisa ze-ammonia.
Njengengxenye yohlelo lokulawula amandla, i-International Ammonia Refrigeration Institute (IIAR) ikhiphe uchungechunge lwezincomo zokuvimbela ukuvulwa ngengozi kwama-valve asetshenziswa ngesandla ezinhlelweni zokuqandisa ze-ammonia (R717).
Inguqulo yokuqala yesiphakamiso-Iziqondiso zokuthuthukisa izinhlelo zokulawula amandla zama-valve esandla ezinhlelweni zokuqandisa ze-ammonia-amalungu e-IIAR angayithenga ngo-$150, kanti abangewona amalungu bangayithenga ngo-$300.
Ukulawulwa kwevalvu esetshenziswa ngesandla kungokulawulwa kwamandla ayingozi, okuvame ukubizwa ngokuthi inqubo yokukhiya/ukukhiya (i-LOTO). Ngokusho kwewebhusayithi ye-University of Iowa Environmental Health and Safety, lokhu kungavikela abasebenzi ekulimaleni noma ekubulaweni ngokusebenza ngengozi noma ukukhishwa kwamandla agciniwe lapho kugcinwa futhi kulungiswa imishini, izinqubo, kanye nezinhlelo.
Amandla ayingozi angaba ugesi, i-hydraulic, i-pneumatic, i-mechanical, i-chemical, i-thermal, noma eminye imithombo. “Ukulandela imikhuba nezinqubo ezifanele ze-LOTO kungavikela abasebenzi ekukhishweni kwamandla okuyingozi,” kusho iwebhusayithi ye-University of Iowa.
Kusukela i-US Occupational Health and Safety Administration (OSHA) yasungula umthetho wokulawula amandla ayingozi (ukukhiya/uhlu) ngo-1989, izimboni eziningi zisebenzise izinhlelo zokulawula amandla ze-LOTO. Kodwa lezi zivame ukugxila emandleni kagesi nawomshini ayingozi; ngokusho kwe-IIAR, imboni ye-HVAC&R ayinakho ukucaca ngokuvulwa ngengozi kwama-valve esandla, okuyimbangela yokuvuza okuningi kwe-ammonia.
Umhlahlandlela omusha uhlose “ukugcwalisa igebe embonini” futhi unikeze abanikazi nabaqhubi bama-valve e-R717 asetshenziswa ngesandla izeluleko ezinhle kakhulu zokuthi bangawasebenzisa kanjani amasu okulawula amandla.
Isikhathi sokuthunyelwe: Agasti-21-2021
