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Osha Confined Space
Confined Spaces
| Question | Answer |
|---|---|
| Attendant | Individual stationed outside permit space and performs duties detailed in employer's permit space program. |
| Authorized Entrant | employee authorized by employer to enter a permit space |
| Blanking/Blinding | Closure of a pipe or duct on both ends with a fastened pipe. Should be leakproof under max pressure. |
| Confined Space (3 things) | #1 Large enough for bodily entry #2 Limited or restricted means of entry or exit. #3 not designed for continuous occupancy |
| Double Block and Bleed | Ball Valve closed on both ends of pipe or duct and drain vent or valve in between opened. |
| Emergency (confined space) | any occurence internal or external of space that endangers entrant. |
| Engulfment | surrounding of a person of liquid or flowable solids that could cause strangulation, crushing or constriction. |
| Entry | Occurs when any body part crosses the plane of entry into a permit space. |
| Entry Permit | Document provided by employer to allow entry into confined space |
| Entry Supervisor | Employer, Crew Chief, Foreman that determines if accetible entry conditions are met. Oversees entry operations and terminates entry when required. |
| T or F: Entry supervisor cannot be attendent or entrant. | False! They can do both duties if properly. (but entrant and attendent cannot be the same person) |
| Hazardous Atmosphere (confined Spaces) | atmosphere that may expose employees to the risk of death, incapacitation, or impairment to self-rescue. Injury or Acute illness. |
| 5 Causes of Hazardous Atmosphere: | #1 Flam. Gas/vapor/mist in 10%+ of it lower flam limit LFL #2 Airborne combustible dust exceeding LFL #3 Oxygen concentration <19.5% or >23.5% #4 Concentration of any substance which could cause risk of... #5 anything else that poses immediate danger |
| Hot Work Permit | Employers written permission to allow operations that provide a source of ignition |
| Immediately Dangerous to Life or Health IDLH | any condition that poses an immediate or delayed threat to life or that would cause irreversible adverse health effects or would interfere with entrants ability to escape unaided from space. |
| Inerting | Displacing of the atmosphere in a space by a noncombustible gas to such an extent that the resulting atmosphere is noncombustible (produces an oxygen deficient atmosphere IDLH |
| Isolation | process a space is removed from service & protected against the release of energy and material into the space by: blanking/blinding, misaligning or removing section of pipes, double block&bleed, lockout/tagout, OR block/disconnect mechanical linkages. |
| Line Breaking | Inentional opening of a pipe, line, or duct that is or has been carrying flammable corrosive or toxic material, an inert gas or any fluid at a volume, pressure or temp capable of causing injury. |
| Non permit confined space | Confined space that does not have the atmospheric hazards that could result in death |
| Oxygen Deficient Atmosphere | atmosphere containing less than 19.5% oxygen by volume |
| Oxygen enriched atmosphere | atmosphere containing more than 23.5% oxygen by volume |
| Permit required confined space program | employers overall program for controlling and where appropriate for protecting employees from, permit space hazards and for regulating employee entry into permit spaces |
| Permit Required Confined Space has one or more of the following 4 characteristics: | #1 contains or has the potential to contain a hazardous atmosphere #2 contains a material that has the potential for engulfing an entrant #3 Has a configuration an entrant could be trapped or asphyxiated #4 contains any other serious safety hazard |
| Permit System | Employers written procedure for perparing and issuing permits for entry and for returing the permit space to service following termination of entry |
| Prohibited Condition | any condition in a space that is not allowed by the permit during the period when entry is authorized |
| rescue service | means the personnel designated to rescue employees from permit spaces |
| Retrieval System | equipment used for non-entry rescue of persons from permit spaces. |
| Testing | process by which hazards of space are identified and evaluated. Includes specifying the tests that to be performed in the space. |
| Who's responsibility is it to evaluate if any spaces are permit required confined spaces? | the employer using the decision flow chart in appendix A to section |
| How shall an employer notify employees of a confined space? | danger signs or by any other equally effective means. |
| If employer decides employees will enter a confined space what initial measures will they take? | Have a written and compliant permit space program that is available to the employees and their designees. |
| Employer need not comply with requirements if: | #1 the only hazard is atmospheric #2 continuous forced air ventilation will keep the space safe #3 has monitoring data supporting #1&2. #4 if initial entry is needed to determine conditions, special method to be followed #5 Documented findings |
| What should be done immediately after opening an entrance cover? | The opening shall be promptly guarded by a rail and temporary cover. |
| What internal atmosphere conditions need to be tested (in order) | #1 Oxygen content #2 Flammable gases and vapors #3 Potential Toxic Air Contaminents |
| When is it okay for a hazardous atmosphere to be present during confined space entry | Never. If detected during entry, the employees must immediately exit. The atmospheric hazard must be removed and the space retested and documented before reentry |
Created by:
kingpalmer