Accession Number:

AD0759982

Title:

Test of Bendix Air Filters Used as Mufflers.

Descriptive Note:

Letter rept.,

Corporate Author:

NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C

Personal Author(s):

• Reimers,Stephen D.

Report Date:

1971-09-02

Pagination or Media Count:

8.0

Abstract:

Excessive noise, coming mainly from air supply and exhaust lines, has recently become recognized as a serious hazard to hyperbaric chamber personnel. A Bendix air filter no. 057619 was tested by the Navy Experimental Diving Unit as a potential muffler for these systems. The filter was found to produce a 30dbA reduction in the sound level produced by the air supply line in EDUs no. 5 recompression chamber. The filter, being combustible, was, however, judged a fire hazard and work with it has been terminated in favor of work with all metal filters and silencers. Author

Descriptors:

• *DECOMPRESSION
• NOISE
• REDUCTION
• HAZARDS
• TEST METHODS
• LIFE SUPPORT SYSTEMS

Subject Categories:

• Acoustics
• Life Support Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE