1、12lIs large enough and so configured that an employee can enter bodily and perform work;lHas limited or restricted means of entry or exit;lIs not designed for continuous human occupancy.A space that:3lTankslManholeslBoilerslFurnaceslSewerslSiloslHopperslVaultslPipeslTrencheslTunnelslDuctslBinslPits4
2、lOxygen Deficiency 23.5% oxygen concentrationlCombustibles Methane Hydrogen Acetylene Propane Gasoline fumeslToxic Materials Carbon Monoxide Hydrogen Sulfide Welding fumes CorrosiveslElectricitylMechanical Hazards Mixers Crushers5lThe act by which a person intentionally passes through an opening int
3、o a permit required confined space.lAny part of the body passing through the opening is considered entry.6lIMMEDIATELY DANGEROUS TO LIFE OR HEALTHlAny condition which poses an immediate threat to the health of life on an entrant, or;lWould cause irreversible adverse health effects, or;lWould interfe
4、re with an individuals ability to escape unaided from a permit space.7lThe employee who will physically enter the confined space to perform the work.8lThe employee who remains outside the confined space and monitors the entrant(s); guards the space against unauthorized entry; warns the entrants of a
5、ny unusual conditions; and summons the rescue personnel if needed.9lA Permit-Required Confined Space is confined space that has one or more of the following characteristics:lContains or has the potential to contain a hazardous atmosphere;lContains a material that has the potential for engulfing an e
6、ntrant;lHas an internal configuration such that an entrant could become trapped or asphyxiated; orlContains any other serious safety or health hazard.10lThe employee responsible for coordinating the entry into the confined space. This must be a team leader or foreman.11lThe person directly responsib
7、le for the work being performed in the confined space. This can be the Team Leader, Foreman, journeyman, or other person qualified by training and experience.12lA confined space that does not contain or, with respect to atmospheric hazards, have the potential to contain any hazard capable of causing
8、 death of serious physical harm.1314lIsolate the spacelVentilate the spacelConduct TailboardlComplete permitlTest the atmospherelEnter the space15lClose Valves Double block & bleed, or Blank flangelEmpty the Space Depressurize, vent & drainlLockout/Tagout Equipment Electrical sources Rotating/recipr
9、ocating parts Hazardous materialslClean residue from the space16lUse mechanical ventilation Fans Air hornslVentilate at the rate of at least four (4) volumes per hour Larger spaces require more ventilationlMake sure air supply is not contaminated Ventilation air supply must be from fresh air unconta
10、minated with flammables, toxins, etc.17lEntire crew must attend Attendants, entrants, entry supervisorlReview hazards of entry and worklReview PPElReview procedure for contacting rescue verify rescue availablelComplete permit18lPermit must be correctly and completely filled out prior to entry.lPermi
11、t must be activated by Entry Supervisors signature to be valid.lNo entry is allowed without a valid permit.lPermits are valid for up to 12 hours.lWhen work is completed, permit and tailboard form should be returned to safety.lCancelled permits must be kept on file for at least one year.19lCheck for
12、Oxygen Content: At least 19.5% and less than 23.5%lCheck for Combustibles: Less than 10% of the LELlCheck for Toxic Gasses: Most commonly carbon monoxide (PEL 35 ppm) or any other hazardous materials as determined by the use of the space.In this order:20lAny time a limit is exceeded, no matter what
13、the reason, all personnel shall immediately exit the space, and no others shall enter until atmospheric conditions are returned to safe levels.21lPrior to every entry when the space is vacant;lAfter a 10 minute ventilation period (if ventilation is necessary);lAt least hourly for permit-required con
14、fined spaces.lMore frequently, if conditions or suspicions warrant.2223lAn attendant shall be posted near the entrance for the duration of the work. He shall be in constant communication with the entrants while the job is in progress.lAll entrants shall sign the sign in log when entering the space a
15、nd sign out when exiting.lThe attendant shall maintain the permit and sign in log for the duration of the work.24lRemove all personnel, tools, and debris from the space. Sign off the log.lClose the space.lCancel the permit.lReview the job with the host employer (hazards, problems, other employers, e
16、tc.)25lIsolate the spacelVentilate the spacelEvaluate the space Test atmosphere Assure justification conditions are metlConduct tailboardlEnter the space26lClose Valves Double block & bleed, or Blank flangelEmpty the Space Depressurize, vent & drainlLockout/Tagout Equipment Electrical sources Rotati
17、ng/reciprocating parts Hazardous materialslClean residue from the space27lUse mechanical ventilation Fans Air hornslVentilate at the rate of at least four (4) volumes per hour Larger spaces require more ventilationlMake sure air supply is not contaminated Ventilation air supply must be from fresh ai
18、r uncontaminated with flammables, toxins, etc.28lDetermine that the space meets all the conditions set forth in the non-permit justificationslConduct atmospheric testinglEvaluation must be certified by Entry Supervisors signaturelDetermine that the confined space does not: contain or have the potent
19、ial to contain a hazardous atmospherelContinuous mechanical ventilation not acceptable as good atmosphere contain a material with the potential for engulfment Has an internal configuration which could trap or asphyxiate, or contain any recognized serious safety or health hazard29lIf non-permit condi
20、tions change during the job, the space shall be immediately evacuated, and re-classified as a permit-required confined space; or conditions shall be returned to non-permit conditions and again certified as such by the entry supervisor.30lContractors must be informed of the hazards within the spacelC
21、ontractors must follow their own established confined space entry procedure and use their own permit formslContractors must supply their own attendants One attendant is acceptable for multiple companies entrantslContractors must supply their own air monitorslContractors must review entry after compl
22、etion of job31lTo monitor entrants during the job and during entry & exit to help insure their safety. The attendant may not abandon his post for any reason while personnel are in the space unless relieved by another qualified attendant.lTo monitor atmospheric conditions in the space prior to and du
23、ring entry.lTo control access to the confined space.lTo summon emergency assistance as needed.lTo assess hazards in and around the space, and take action on the same.lTo keep records of confined space work, such as air test results, personnel entry/exit, etc.32lTo assure that the space has been adeq
24、uately ventilated, isolated, emptied, or otherwise made safe for entry.lTo immediately exit a space, without question, upon word of the attendant, no matter what the reason.lTo follow all safety rules and procedures that apply to the job.lTo be familiar with the work to be performed and the procedur
25、es that apply to the job.lTo use the appropriate PPE whenever necessary.33lTo assure adequate protection is provided to the entrants by verifying adequate lockout/tagout and that all hazards are securely isolated.lTo support the attendants authority in controlling access to a confined space.lTo verify that all personnel have exited prior to closing the space.lTo assure that all personnel involved are aware of the hazards associated with the space.lTo assure that rescue services are available prior to entry.谢谢你的阅读v知识就是财富v丰富你的人生谢谢
