Confined Space Training

1. Confined Space Training

2. Definition of a Confined Space Large enough to bodily enter Limited or restricted access or egress Not designed for continuous human occupancy Review of key Confined Space Information

3. Review of key Confined Space Information A Permit-Required Confined Space (PRCS) is any confined spacewith a serious safety or health hazard.

4. SLAC Inventory of Confined Spaces • Chapter 6, Confined Spaces (ESH web site) • ”Tools and forms” contains links to the confined space inventory and all of the forms you will see in this class

5. Types of Hazardous Atmospheres Oxygen deficient or enrichedLess than 19.5 % oxygen or greater than 23.5% CombustibleLEL over 10% ToxicToxic gases, vapors, mists or dusts at or above PEL It is possible to have any combination of these three hazards. Gases of various weights (relative to air) will stratify in the space.

6. Atmospheric Monitors The atmosphere in a space must be tested to assure that no hazards exist. An inaccurate monitor will not protect the workers. The monitor must be within its calibration cycle. Verify that all equipment is in good working order.

7. Entrant’s Responsibilities • Know the hazards and signs, symptoms and consequences of exposure. • Properly use all confined space equipment. • Communicate with the attendant and alert to symptoms or prohibited conditions. • Exit from the space if ordered, prohibited conditions exist or signs/symptoms develop or an evacuation alarm is sounded. • Notify entry supervisor if unable to perform the entrant duties

8. Know the hazards of entry & signs of exposure Aware of possible behavior effects Maintain accurate account of entrants Attendant’s Responsibilities • Remain at the entrance to the space • Communicates with entrants & monitor their status

9. Attendant’s Responsibilities, continued Monitors activities inside and outside the space Orders evacuation of space if a prohibited condition exists, entrant develops symptoms, an outside condition creates a hazard, or the attendant can not perform all duties Initiate on-site rescue procedures Keep unauthorized persons away Does nothing that might interfere with primary duties Performs Non- Entry Rescue

10. Entry Supervisor’s Responsibilities • Know hazards and symptoms of exposure • Verifies entries have been made on permit, all tests have been performed & procedures/equipment are in place. • Terminates entry & cancels permit • Verifies rescue services are available • Removes unauthorized individuals • Assures acceptable entry conditions exist and are maintained

11. Entry Supervisor’s Responsibilities, continued If a hazardous condition develops during entry: • Evacuate space • Determine cause of hazardous condition • Develop procedure to protect employees during subsequent entries { } Determine if entrant and/or attendant are trained, qualified, authorized, and are capable of performing the task.

12. Methods of entry • Non permit space • Pre-entry checklist for NPRCS • Permit space • Pre-entry checklist and entry permit • Change to a non permit space – declassify • Entry under Alternate procedures * Review the inventory information to help decide which method to use.

13. Methods of Entry • Facilitate changing to a non-PRCS • Alternate Entry Procedure • Only hazard is actual or potential atmospheric hazard • Handled with Ventilation • Complete form • Temporary Declassification • No actual or potential atmospheric hazard • Remove all hazards by LOTO or other means for the duration of the entry • - Complete form

14. Evacuation Required When . . . Alarm sounds, prohibited condition exists, or entrant exhibits signs of exposure • O2 drops to 19.5% or rises to 23.5% • Flammables rise to 10% of LEL • Contaminants reach exposure limits • Outside conditions pose a hazard • Attendant or Entry Supervisor must leave post

15. Entry Permit Permits MUST be posted at the entry of the permit space (red folder) They must be retained for one year.