1、 Space large enough to enter&;Limited or Restricted entry or exit&;Not designed for continuous worker occupancy.NONot a Confined SpaceYESHazardous Atmosphere Engulfment Hazard Configuration Hazard Any other recognizedserious hazardPermit-Required Confined SpaceNonPermit-Required SpaceYESNOOrOrOr Con
2、fined SpaceTo reclassify a permit-required confined space,a pre-entry checklist shall be completed and certified by an entry supervisor prior to entry.The checklist shall contain the date,the location of the space,and the signature of the person providing the certification.Manholes often remaincover
3、ed for long periodsof time.Poisonous gases,such as hydrogen sulfidecan accumulate inside ofmanholes.H2SManholes may alsoaccumulate highlyflammable gasessuch as methane.CH4?Fresh outsideair is blown intothe space to diluteand removecontaminants,andsupply oxygen.O2If concentrations ofgases and vapors
4、are found to be at harmful levels,the confined space must be ventilated beforeentry.O2O2O2Fresh AirShould conditions develop which require extrication,and the entrant cannot get out of the confined space on their own,the attendant must call for emergency assistance at once!CAUTIONOpening in GroundKeep Out!谢谢你的阅读v知识就是财富v丰富你的人生docin/sanshengshiyuandoc88/sanshenglu 更多精品资源请访问更多精品资源请访问
