Table 3-1. Sample Hazard Assessment: Cleaning the Inside Surface of a Chemical/Radioactive Contaminated Tank

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).

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.

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