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Safe Working In A Confined Space, hazards, safety, image, 2)Begin self…
Safe Working In A Confined Space
confine space
by American national standard institute confined space must be consist of
Space large enough to enter
Limited or restricted entry or exit
Not designed for continuous occupancy
Examples
tunnels
vaults
tank
permit
Requires a Permit if there exist any of the following
Hazardous atmosphere
Engulfment hazard
Configuration hazard
Any recognized serious hazard
Written permits
Valid for a specified amount of time
Lists equipment for safe entry
Lists atmospheric testing results
Specifies rescue team provisions
Signed by the site supervisor
Permit system
Permit signed by supervisor
Entry permits include
Test results & tester initials or signature
Supervisor name & signature
Name of space and personnel
Purpose & control measures in place
Name & number of rescue/emergency service
Acceptable entry conditions
hazards
Hazardous Atmospheres
Oxygen-enriched
atmosphere
over 23.5%
Oxygen-deficient
atmosphere
at 8%-10%
Mental failure, fainting, unconsciousness, ashen face, blueness
of lips, nausea, and vomiting.
4%-6%
Coma in 40 sec., convulsions, respiration ceases, death.
Flammable atmosphere
10% LEL
Toxic gases and vapors
carbon monoxide 35 ppm
Colorless, odorless gas
Slightly lighter than air
Chemical asphyxiant
Other Hazards
Engulfment
Falling Objects
Temperature Extremes
Toxic/ Corrosive chemicals
Physical hazards
Noise
Vibration
Radiation
safety
safety precuation
Employer requirements
Inform employees of danger
Trained and educated employees
Evaluate workplace
Confined space entry
Air Testing Monitor
Full Body Harness
Communication Equipment
Protective Eyewear
Entry duties supervisor
Know space hazards & consequences
Ensure operation with entry permit and conditions
Verify emergency plans,
Entry duties authorized entrant
Know space hazards and consequences
Use appropriate PPE
Maintain communication with attendant
Entry duties authorized attendant
Perform no other duties that interfere
Maintain communication
Remain outside space
Training and education
Emergency training (CPR and first aid)
Knowledge & skills for safe performance
Certificate of training issued
Emergencies
confined space team must practice annually
2)Begin self rescue in hazards
Role of entrant
1)Be alert to exposure
Role of attendant
1)Must be stationed outside to monitor
2)Maintain effective contact with entrant
