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Reliability Prediction Procedure for Electronic Equipment


Document Number SR-332
Issue Number 02
Issue Date Sep 2006
Product Type Special Report (SR)
Component of FD-ARPP-01, FR-796
ORDERING INFORMATION

ABSTRACT:
THIS DOCUMENT IS SOLD ONLY AS AN
ENTERPRISE LICENSE


Issue 2 of SR-332, Reliability Prediction Procedure for Electronic
Equipment
replaces Issue 1, and is a module of FR-796, Reliability and
Quality Generic Requirements (RQGR).

New from Telcordia! A Reliability Software Tool that Automates the
Reliability Prediction Techniques in SR-332.

Select FD-ARPP-01 for more information on this easy-to-use, comprehensive
software tool.

Reliability prediction is an important element in the process of
selecting equipment. These predictions provide necessary input to system-level
reliability modes for predicting expected downtime per year and system
availability. Issue 2 of SR-332 provides all the tools needed for predicting
device and unit hardware reliability, and contains extensive revisions since the
document was last issued in 2001.

The Telcordia Reliability Prediction Procedure has a long and distinguished
history of use within and outside the telecommunications industry. Issue 2 of
SR-332 provides the only hardware reliability prediction procedure developed
from the input and participation of a cross-section of major industrial
companies. This lends the procedure and the predictions derived from it a high
level of credibility free from the bias of any individual supplier or service
provider.

Issue 2 of SR-332:

  • Describes recommended methods for predicting device and unit hardware
    reliability. These techniques estimate the mean failure rate in FITs for
    electronic equipment. This procedure also documents a recommended method for
    predicting serial system hardware reliability

  • Includes the tables needed to facilitate the calculation of reliability
    predictions

  • Contains a new section providing techniques to calculate the upper
    confidence level of a failure rate prediction. Issue 1 only provided techniques
    for calculating the 90% upper confidence level. In addition, those techniques
    were overly conservative. The new techniques provide additional precision in the
    estimate and allow calculation at any desired level of confidence

  • Includes revised tables of generic device failure rates based on new data.
    For several devices, the range of complexity covered by the procedures has been
    extended. In addition, over 40 new devices have been added (primarily for fiber
    optic communication devices)

  • The use of the Method I, II, and III terminology used in earlier issues of
    the Reliability Prediction Procedure, but discarded in SR-332, Issue 1, has been
    reinstated for the purposes of reference by users of the procedure.

The following documents were fully or partly replaced by SR-332: TR-332,
TR-NWT-000332, TA-000-23620-83-01, and IP-10425.

For consulting on this product, select CS-ARPP-CONSULTING for more
information.

When using SR-332, you may need to refer to GR-357. You may also want to
refer to GR-2969, SR-1171, and SR-TSY-001369.

Fiber Testing and Consulting

Telcordia is uniquely positioned to provide in-depth, expert consulting
regarding this GR, including knowledge of how these generic requirements are
used by telecommunication carriers in selecting products to meet their
deployment needs. Telcordia also offers a comprehensive and independent
laboratory testing service that helps manufacturers develop and qualify new
products and bring those products to market in a timely and cost-effective
manner.

To submit comments on this GR, or to obtain further information regarding
Telcordia Consulting and Testing Services, please contact:

Melissa Handa
Executive Director - Network and Product Integrity
Telcordia Technologies
732-699-6161
mhanda@telcordia.com


Table of Contents:

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