LOTO - Chochitika chothandizira kutentha

Mu 2020, ku United States kunachitika ngozi yokhudza kutentha, zomwe zinapha antchito awiri. Chifukwa chake chinali chakuti njira zotetezera Lock Out Tag Out (LOTO) ndi Restricted Space Code sizinatsatidwe.

Ngozi iyi ikutiuza kuti chithandizo cha kutentha ndi makampani oopsa kwambiri, chithandizo cha kutentha sichingalekanitsidwe ndi madzi, gasi, magetsi, ndi zinthu zina zoopsa zili paliponse. Kusagwiritsa ntchito bwino zida zina, kusasamala, ndi zina zotero kungayambitse ngozi yakupha. Pamene chitetezo cha chilengedwe ndi zofunikira za khalidwe zikuchulukirachulukira, mabizinesi ambiri amagula ndikugwiritsa ntchito ng'anjo yeniyeni yozimitsira mpweya, zomwe zimaphatikizapo chitetezo cha ng'anjo zozizimitsira mpweya komanso chitetezo cha mpweya wosagwira ntchito. Ngoziyi ikutibwezera ku mlandu wina. Ngoziyi idachitika nthawi ya 9:30 am pa Meyi 17, 2001, pamene wogwira ntchito yokonza anali kugwira ntchito pa chingwe cha hydraulic mu ng'anjo yozizimitsira mpweya. Ng'anjoyo imatsegulidwa mbali ndipo ili ndi thanki yozimitsira mpweya ya mamita 6 m'mimba mwake ndi mamita 9 kuya. Chida chogwirira ntchito chikayikidwa mu thanki yozimitsira mpweya, ng'anjoyo imadzazidwa ndi mpweya wosagwira ntchito kapena nayitrogeni m'malo mwa vacuum. Pofuna kukonza chingwe cha hydraulic, thanki yamafuta idachotsedwa madzi masiku atatu apitawo ndipo injiniyo idayikidwa pansi pa thanki yozimitsira mpweya. Wokonzayo anagwera mu thanki yopanda kanthu kuntchito ndipo woyang'anira wake anamva kuyitana kopempha thandizo ndipo anakwera mu chitofu kuti ayesere kumuthandiza. Anzake omwe anamva kuyitana kopempha thandizo anafika pamalopo ndipo anapeza wokonzayo atagona pa lift ndi woyang'anirayo ali pambali pake. Panthawiyi, chowongolera ng'anjo chimayatsidwa ndipo ma switch a argon ndi nayitrogeni amayatsidwa. Kutulutsa gasi nthawi zambiri kumayendetsedwa ndi solenoid valve panthawi yokonza kutentha. Sizinali zomveka bwino chifukwa chake chinayamba kapena mtundu wa gasi womwe unkaponyedwa mu ng'anjo. Mboni pambuyo pake zinati chosinthira mu kabati yowongolera magetsi chinaloza ku gasi wa argon. Ogwira ntchito yokonza ndi oyang'anira sanali kuvala zipewa kapena zingwe zotetezera, ndipo pofika nthawi yomwe dipatimenti yozimitsa moto inafika mochedwa kwambiri kuti iwatengere kuchipatala, lipoti la kafukufuku wa mtembo linati chifukwa cha imfa chinali kupuma mpweya.

Loto, yomwe imalembedwa kuti lockout-tagout. OSHA ndi njira yovomerezeka ndi OSHA yopewera kuvulala kwa munthu mwa kupatula kapena kutseka magwero ena oopsa a mphamvu. Yakhala ikugwiritsidwa ntchito kwambiri padziko lonse lapansi, ndipo tsopano yawonekera panthawi yoyenera ku China. Palinso mafotokozedwe oyenera mu Lamulo Lopanga Chitetezo. Palinso malamulo enaake mu muyezo wokhawo wadziko lonse wa GB 15735 2012, Zofunikira Zachitetezo ndi Ukhondo pa Njira Yopangira Chithandizo cha Kutentha kwa Zitsulo. Cholinga chake ndikuteteza antchito ku kuwonongeka kwa mphamvu ya makina, zomwe zimakhudza wantchito aliyense amene akufunika kulumikizana kapena kugwira ntchito pafupi ndi makina kapena zida zomwe zili ndi mphamvu kapena zosungidwa. Njira yeniyeni ndikutseka magetsi poyika zida zoyeretsera \ kukonza \ kuyang'anira \, ndikuwonetsa kuti ntchito yokonza ikuchitika ndi chizindikirocho pamene lokoyo palibe, ndikuyesa mutachita ntchito yomwe ili pamwambapa.