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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: Allan Brown (allan@ramsconsultants.com )
Organization:Rams Consultants Inc.
Date posted: Wed Nov 28 12:57:06 US/Eastern 2001
Subject: Thermocouple failure rate data
Message:
Does anyone have failure rate data for thermocouples? thanks Allan


Reply:

Subject: Thermocouple Failure Rate Data
Reply Posted by: B.W.Dudley (bdudley@alionscience.com )
Organization: Reliability Amnalysis Center
Date Posted: Wed Nov 28 15:09:40 US/Eastern 2001
Message:
The failure rate for the generic thermocouple sensor is 0.01 failures per million hours. This information was found in the RAC report, Non-electronic Parts Reliability Data (NPRD-95), which is available from our product catalog.


Reply:

Subject: Thermocouple failure rate data
Reply Posted by: Allan Brown (allan@ramsconsultants.com )
Organization: RAMS consultants Inc.
Date Posted: Tue Dec 4 15:41:01 US/Eastern 2001
Message:
On what page did you find this information? I looked in that document and did not find any referance to thermocouples in the index. thanks Allan


Reply:

Subject: Thermocouple
Reply Posted by: B.W.Dudley (bdudley@alionscience.com )
Organization: RAC
Date Posted: Wed Dec 5 8:50:19 US/Eastern 2001
Message:
The thermocouple information was found on page 2-183 of the Non-electronic Parts Reliability Data (NPRD-95). For your information, parts that you need to find can be located in the part description index in the back of the handbook. Page references to the data source are indicated in this section.


Reply:

Subject: failure rates
Reply Posted by: don miller (dmiller897@aol.com )retired boeing
Date Posted: Sat Dec 8 19:01:43 US/Eastern 2001
Message:
Please asked yourself " does a thermocouple or any othr harware have a generic failure rate. Of course not. There is no data at any level - there has never been any evidence of any validity of predicted failures matching the real world. failure occur. howver, they virtual are the result of design error, manufactoring error, human error. I have 30 + years of case toconfirm this. Go work you engineerin problems related to the thermocouple. Assume that it can fail for all the reasons mentioned. not based upon nonsenese


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