密閉空間作業(yè)職業(yè)病危害防護(hù)confinedspacetraining-文庫吧資料
2025-01-12 03:03本頁面
【正文】 oring equipment o Ventilating equipment o Communications equipment o Lighting equipment o Barriers o Equipment needed for safe entry and exit o Emergency equipment o Other equipment for safe entry The Entry Permit o Permit must be pleted before entry is authorized o Entry supervisor must sign the permit o Permit must be made available at the time of entry so entrants can confirm that preentry preparations have been pleted The Entry Permit o Duration may not exceed the time identified on the permit o Retain each canceled entry permit for at least 1 year to facilitate review of the program o Problems encountered during entry shall be noted on the permit so that appropriate revisions can be made to the program Contents of The Entry Permit 1. Permit space to be entered 2. Purpose of the entry 3. Date and the authorized duration of the entry permit 4. Authorized entrants 5. Attendants 6. Entry supervisor with a space for the signature Contents of The Entry Permit 7. Hazards of the permit space 8. Measures used to isolate the permit space and to eliminate or control permit space hazards before entry 9. Acceptable entry conditions 10. Results of initial and periodic tests, names or initials of the testers and when the tests were performed Contents of The Entry Permit 11. Rescue and emergency services 12. Communication procedures 13. Equipment (personal protective equipment, testing equipment, munications equipment, alarm systems, rescue equipment, etc.) 14. Any other information necessary in order to ensure employee safety Duties of Authorized Entrants o Understand all potential hazards o Know what equipment to use amp。 45 minutes, recovery with treatment. 6% Coma in 40 seconds, spasmatic breathing, convulsions, and death Oxygen Enrichment o O2 levels above % are considered “Oxygen Enriched.” o Oxygen Enriched atmospheres create fire and explosion hazards. o Cause flammable materials such as clothing to burn rapidly when ignited and may cause nonflammable materials to ignite. Hydrogen Sulfide Exposure Concentration Effect 1 ppm Smell of rotten egg 10 ppm 8 hr. TWA 15 ppm 15 min. STEL 100 ppm Lose sense of smell 300 ppm Loss of consciousness (approx. 20 min.) 1000 ppm Immediate respiratory arrest, loss of consciousness, followed by death Carbon Monoxide Exposure Concentration Effect 35 ppm 8 hr. TWA 200 ppm Ceiling, faint signs of disfort may begin to appear 600 ppm Headache and disfort after 1 hour 2500 ppm Loss of consciousness after approximately 30 minutes 4000 ppm Quickly fatal CO Poisoning can be reversed if caught in time. Welding in Confined Spaces o Continuous ventilation should be provided in the confined space. Pure oxygen should never be used fo
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