Research Papers

Guidance and Methodologies for Managing Digital Instrumentation and Control Obsolescence

[+] Author and Article Information
Matthew O’Connor

Advanced Nuclear Technology
Electric Power Research Institute,
Palo Alto, CA 94304

Bruce Geddes

Southern Engineering Services,
Canton, GA 30115

Sean Kelley

Senior Associate
Southern Engineering Services,
Canton, GA 30115

Manuscript received October 12, 2015; final manuscript received July 15, 2016; published online October 12, 2016. Assoc. Editor: John F. P. de Grosbois.

ASME J of Nuclear Rad Sci 2(4), 041010 (Oct 12, 2016) (8 pages) Paper No: NERS-15-1210; doi: 10.1115/1.4034287 History: Received October 12, 2015; Accepted July 18, 2016

New nuclear plant technology will rely heavily, if not exclusively, on digital equipment. Obsolescence of digital instrumentation and control (I&C) equipment is an inevitable part of plant technology life cycle for new and existing plants. Developing an overall strategic plan can mitigate some of the risks associated with obsolescence. Moreover, when developed as a part of an overall life cycle management plan (LCMP), a strategic obsolescence management approach can identify steps that can be taken at early stages of the technology life cycle to cope proactively with the obsolescence of equipment. Recent work within the advanced nuclear technology (ANT) program at the Electric Power Research Institute (EPRI) (O’Connor et al., 2014, “Advanced Nuclear Technology: Guidance and Methodologies for Managing Digital Instrumentation and Control Obsolescence,” EPRI, Palo Alto, CA, Product ID 3002002852) has developed guidance and methodologies for determining when digital obsolescence is likely to occur, the extent to which it can occur, the risks and impacts due to obsolescence, and strategies that can be used to minimize its effects, all in the context of system LCMP. Worksheets for assessing obsolescence risks and the applicability and limitations of management strategies were developed as a part of this work, and can be used to create or supplement a strategic obsolescence management plan.

Copyright © 2016 by ASME
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Grahic Jump Location
Fig. 1

New plant life cycle versus I&C system life cycles

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Fig. 2

Likelihood of a given obsolescence type versus potential impacts

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Fig. 3

Repair activity on a printed circuit board

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Fig. 4

A blend of equivalent item and virtualization strategies




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