Muna 2020, kwakaitika tsaona yekupisa muUnited States, iyo yakakonzera kufa kwevashandi vaviri. Chikonzero chaive chekuti nzira dzekuchengetedza Lock Out Tag Out (LOTO) uye Restricted Space Code hazvina kuteverwa.
Tsaona iyi inotiudza kuti kurapwa kwekupisa iindasitiri ine njodzi zvikuru, kurapwa kwekupisa hakugoni kuparadzaniswa nemvura, gasi, magetsi, nezvimwe zvinhu zvine njodzi zviri kwese kwese. Kusashanda zvakanaka kwemidziyo, kushaya hanya, nezvimwewo zvinogona kukonzera njodzi inouraya. Sezvo kuchengetedzwa kwezvakatipoteredza uye zvinodiwa zvemhando zvichiramba zvichioma, mabhizinesi akawanda anotenga nekushandisa maoven echokwadi ekudzimisa mweya, ayo anosanganisira kuchengetedzeka kwemaoven ekudzimisa mweya uye kuchengetedzeka kwegasi risina simba. Tsaona iyi inotidzosera kune imwe nyaya. Tsaona iyi yakaitika na9:30 am musi wa17 Chivabvu, 2001, apo mushandi wekugadzirisa aishanda patambo ye hydraulic muchoto chekudzimisa mweya. Choto chacho chakavhurika parutivi uye chine tangi rekudzimisa mweya rine dhayamita ye 1.5 tsoka uye kudzika kwe 1.5 tsoka. Kana workpiece yaiswa mu quenching tank lift, choto chinozadzwa negasi risina simba kana nitrogen panzvimbo pe vacuum. Kuti pagadziriswe tambo ye hydraulic, tangi remafuta rakabviswa mvura mazuva matatu apfuura uye mota yakaiswa pasi petangi rekudzimisa mweya. Mugadziri wezvinhu akawira mutangi risina chinhu ari kubasa uye mukuru wake akanzwa kushevedzera kwerubatsiro ndokukwira muchitofu kuti vaedze kumubatsira. Vamwe vaanoshanda navo vakanzwa kushevedzera kwerubatsiro vakasvika panzvimbo iyi vakawana mukuru wezvinhu akarara pamusoro pechikwidzo nemukuru wezvinhu akarara padivi pake. Panguva iyi, panel yekudzora chitofu inobatidzwa uye switch dzeargon nenitrogen dzinobatidzwa. Kuburitswa kwegasi kunowanzo dzorwa ne solenoid valve panguva yekurapa kupisa. Hazvina kujeka kuti sei yakatanga kana kuti rudzii rwegasi rwaipombwa muchoto. Zvapupu zvakazotevera zvakati switch iri mukabhineti yekudzora magetsi yairatidza gasi reargon. Vashandi vekugadzirisa nevatariri vakanga vasina kupfeka ngowani kana tambo dzekuchengetedza, uye panguva iyo bazi remoto rakasvika ranonoka kuti rivaendese kuchipatara, mushumo wekuongorora chitunha wakataura kuti chikonzero cherufu rwacho kwaiva kushaya mweya.
Loto, iyo inonyorwa se "lockout-tagout". OSHA inzira inoenderana neOSHA yekudzivirira kukuvara kwemunhu nekuparadzanisa kana kukiya mamwe masosi esimba ane njodzi. Yave ichishandiswa zvakanyanya pasi rose, uye ikozvino yabuda panguva chaiyo muChina. Kunewo tsananguro dzakakodzera muSafety Production Law. Kunewo zvigadziro zvakananga muNational Heat Treatment Industry Standard GB 15735 2012, Zvinodiwa zveSafety and Hygiene for Metal Heat Treatment Production Process. Chinangwa chayo ndechekudzivirira vashandi kubva mukukuvadzwa kwesimba remuchina, kusanganisira mushandi wese anoda kubata kana kushanda pedyo nemuchina kana mudziyo une simba kana rakachengetwa. Nzira chaiyo ndeyekukiya simba pakuisa \ maintenance \ adjustment \ inspection \ cleaning equipment, uye kuratidza kuti basa rekugadzirisa riri kuitwa ne "tag" kana kiyi isipo, uye kuiedza mushure mekuita basa riri pamusoro apa.
Nguva yekutumira: Chikumi-19-2021
