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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum (src_forum@alionscience.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Neo Chee Siong (bre80033@nus.edu.sg )
Date posted: Tue Feb 20 8:50:11 US/Eastern 2001
Subject: Maintainability Index for Wet Areas
Message:
Does anyone know about the construction of a maintainability for wet areas?


Reply:

Subject: Maintainability Wet Areas
Reply Posted by: Bruce Dudley (bdudley@alionscience.com )
Organization: Reliability Analysis Center
Date Posted: Wed Feb 21 10:55:40 US/Eastern 2001
Message:
I searched all the RAC data sources both hard copy and soft copy and could not find any reference to the term "wet area" maintenance. Clarification on the term "wet area" and "wet area maintenance" would be helpful in the search for an answer.


Reply:

Subject: Maintainability Under Wet Conditions
Reply Posted by: Floyd Kreuze (floyd.kreuze@honeywell.com )Honeywell
Date Posted: Tue Feb 27 13:03:47 US/Eastern 2001
Message:
This is a good practical question especially at the organizational level, where wet (or rainy) conditions often exist. The literature does not address this factor in the maintainability math models I have seen. My advice is to use the basic time standards from Appendix D Table D-IV of MIL-HDBK-470A "Elemental Maintenance Actions", with some modifications. For O-Level maintenance, especially for fasteners and electrical connectors, add 20% to 30% (or use your own judgement). This factor takes account of and compensates for the added time due to tools or hands slipping under rainy or wet conditions out in the open.


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