REG NASA-LLIS-0083-1992 Lessons Learned - Portable Purge Unit (PPU) Exceeds Recommended Noise Levels.pdf

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1、Lessons Learned Entry: 0083Lesson Info:a71 Lesson Number: 0083a71 Lesson Date: 1992-05-09a71 Submitting Organization: KSCa71 Submitted by: David PenningtonSubject: Portable Purge Unit (PPU) Exceeds Recommended Noise Levels Description of Driving Event: The portable purge unit when operating, exceeds

2、 the recommended 85 DBA. Reference is made to noise hazard survey accomplished by BOC industrial hygiene. The noise level closer than a perimeter of 30 feet exceeds the allowable 85.0 DBA as established by the NASA Hearing Conservation Program. The DBA level near the unit ranges from 91.0 DBA to 99.

3、6 DBA.Lesson(s) Learned: A noise survey performed by the BOC industrial hygiene office revealed that the noise level of the PPU when operating exceeds the recommended 85 DBA.Recommendation(s): Ensure the operations instruction document requires the use of hearing protection prior to start up of the

4、PPU.Evidence of Recurrence Control Effectiveness: N/ADocuments Related to Lesson: N/AMission Directorate(s): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AAdditional Key Phrase(s): a71 Hardwarea71 Industrial Operationsa71 Personal Protective EquipmentAdditional Info: Approval Info: a71 Approval Date: 1994-06-02a71 Approval Name: James G. Klinea71 Approval Organization: KSC/HEIa71 Approval Phone Number: 407-867-7614Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-