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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

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

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Posted by: Xiangping,Wu ( )
Date posted: Fri Jan 28 6:06:58 US/Eastern 2000
Subject: Number of reliability engineers
There're about 10'000 employees in our company,and about 3000 develop engineers among them.Any one can tell me how many reliability engineers we should have.


Subject: Number of reliability Engineers
Reply Posted by: Ned Criscimagna ( )
Organization: IIT Research Institute
Date Posted: Mon Jan 31 12:05:10 US/Eastern 2000
There is no general or magic answer to your question. First of all, I do not think you should base the number of reliability engineers as a percentage of your total staffing or even the number of development engineers. Instead, the number should be based on the complexity of the product(s) your company develops, and the criticality of the product(s), in terms of safety and function. Second, you should not rely on just a few specialists to design for reliability. You should consider having a training program for all of the development engineers (and don't forget production engineers) to give them a basic understanding and appreciation of reliability (and other "ilities" for that matter). A few development engineers in each design area should be given additional training so they can provide reliability support to others in their area. Finally, a "small" group of reliability engineers can provide in-depth support to address specific design and manufacturing problems. These specialists should have or be given training to ensure they fully understand the design process in your company and the product(s).


Subject: Reliability Engineers As a % of Design Engineers
Reply Posted by: Floyd Kreuze
Date Posted: Tue Feb 1 15:11:06 US/Eastern 2000
I agree with Ned's reply. However, I sense you would like a more specific percentage. I have been in the reliability field since 1958 and my experience tells me that a good "rule of thumb" is 5%. These people should be skilled in reliability, maintainability and system safety analyses. They can provide Central RM&SS services (1% for this core group should suffice) as well as in-depth support in product areas on a co-located basis with design/mfg personnel.

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