SRC Forum - Message Replies


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

Back to message list Topics List About this forum
Original Message:

Posted by: Jean-Marie CLOAREC (Jean-Marie.Cloarec@ligeron.com )
Organization:LIGERON SA
Date posted: Wed May 22 12:13:40 US/Eastern 2002
Subject: Time definition
Message:
Can anyone give me the definition/difference between "elapsed time" and "operating time". Which of this 2 times must be used for FMECA, prédictions, .. Thanks


Reply:

Subject: Time definition
Reply Posted by: Nathan Holzhauer (nholzhauer@alionscience.com )
Organization: IITRI
Date Posted: Thu May 23 12:43:04 US/Eastern 2002
Message:
From the Reliability Analysis Center's "Failure Mode, Effects, and Criticality Analysis (FMECA)” publication, pg. 70: Operating Time (t): The total operating time that the indicated item is expected to function during the mission scenario. The value commonly used the total life cycle time of the equipment. As for Elapsed Time, I would assume it to refer to a time (tx) somewhere into the total life cycle of the equipment that is noteworthy, possibly for mission reasons.


Back to message list Topics List About this forum
Reply to this message