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Page Title: Table 3-1. Sample Hazard Assessment: Cleaning the Inside Surface of a Chemical/Radioactive Contaminated Tank - Top Manhole En...
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DOE-EM-STD-5503-94
TABLE 3-1
Sample Hazard Assessment: Cleaning the Inside Surface of a Chemical/Radioactive
Contaminated Tank Top Manhole Entry
Step
Hazard
Controls
7. Enter tank.
Gas or liquid in tank.
Provide personal protective equipment for conditions found.
(Reference: RADCON Manual, NIOSH Doc. #80-406; OSHA
Explosive gas.
CFR 1910.134)
Improper oxygen level.
Provide outside helper to watch, instruct and guide operator
entering tank, with capability to lift operator from tank in
Chemical exposure.
emergency.
Gas, dust, vapor:
irritant
toxic
Liquid:
irritant
toxic
corrosive
Solid:
irritant
corrosive
Radiological exposure,ingestion, contact.
Exposure to hazardous atmosphere.
Tripping hazard.
NOTE: This column should contain specific
information about the material to be
encountered (e.g., chemical/radioactive material
name, quantity, anticipated length of exposure).
8.
Clean tank.
Chemical/radiological exposure internal and
Provide protective clothing and equipment for all operators and
external.
helpers.
Heat Stress.
Provide exhaust ventilation (contamination control).
Failure of life support.
Provide air supply to interior of tank.
Exhaustion.
Continuous monitoring of air in tank for radioactivity and oxygen
concentration.
Reaction of chemicals/radioactive material,
causing mist or expulsion of air contaminant.
Replace operator or provide rest periods.
Provide means of communication to get help, if needed.
Provide two-man standby for any emergency.
3-8


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