Where a concentration of a toxic, flammable or explosive substance is present or an oxygen enrichment or deficiency exists in a hazardous confined space, Corsafety.ca shall ensure that the hazardous confined space is purged and ventilated before a worker is allowed to enter the space.
- Where a hazardous confined space cannot be purged and ventilated to provide a safe atmosphere or a safe atmosphere cannot be maintained, Corsafety.ca shall ensure that no work is carried-on in the confined space.
If the atmospheric entry conditions cannot be met as defined in this written program, continuous forced-air ventilation methods will be utilized at all times to eliminate the encountered hazardous atmosphere.
- If ventilation is unsuccessful, as demonstrated by unacceptable re-testing results, or, even if acceptable conditions are ever unable to be consistently maintained during actual entry operations, authorized entrants will be required to wear appropriate respiratory protective equipment in compliance with local regulatory guidelines.
- This equipment selection will be based on the atmospheric test results which will indicate the proper level of respiratory protection to be worn.
- Note: An oxygen source with a concentration greater than 23.0% is not allowed as a ventilation or air dilution method.
