Wash. Admin. Code § 296-842-20015 - Make sure compressors do not create a hazardous breathing air supply
IMPORTANT:
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1. You may need to reposition or extend the compressor's intake or engine exhaust pipe or outlet, especially if they are located near each other. |
2. Be aware that exhaust gases may not adequately disperse when the compressor is operated in: |
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a. An enclosed space such as a small room, a corner, or near a wall; or |
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b. In turbulent wind conditions. |
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To be sure you are providing the recommended operating pressure for respirators, you may need to install a delivery pressure gauge where the respirator's airline hose attaches to the manifold or other air outlet. |
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1. If you do not have a reliable CO-free area available for locating your compressor intake, consider these examples of methods to prevent CO contamination of the air supply: |
a. Use of continuous and effective carbon monoxide alarms and filters; |
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b. Conduct frequent monitoring of air quality; |
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c. Use a CO converter (converts CO to carbon dioxide). |
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2. How often to test depends on a number of considerations, for example: |
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a. Compressor age; |
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b. Maintenance history of the compressor; |
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c. Stability of CO readings. |
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3. If the CO or high temperature alarm cannot be heard by the employee, a flashing light or other effective alternative to an audio alarm needs to be used. |
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4. Safeguards, such as alarms, are necessary to prevent CO contamination resulting from compressor overheating. When alarms are provided, proper maintenance practices such as periodic inspections and calibration will help make sure alarms remain effective. |
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5. Any type of oil-lubricated compressor, such as screw or piston types, may produce dangerous levels of CO if overheating occurs. Old compressors are known to leak oil due to worn parts, increasing the possibility for overheating. Newer compressors may also overheat if maintenance practices are poor. For example, poor maintenance practices may lead to disconnected or incorrectly set alarms, inoperative shut-offs, or an impaired cooling system. |
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6. You need to instruct employees to move to a safe area when the alarm sounds AND to stop using respirators. |
Notes
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 07-05-072, § 296-842-20015, filed 2/20/07, effective 4/1/07; 03-20-114, § 296-842-20015, filed 10/1/03, effective 1/1/04.
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