ML20207N259

Forwards AEOD Case Study Rept, Operational Experience Involving Losses of Electrical Inverters. Primary Focus of Study to Identify Principal Contributing Causes for Occurrence of Inverter Loss Events

ML20207N259
Person / Time
Issue date:	01/12/1987
From:	Stello V NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
To:	Asselstine, Roberts, Zech NRC COMMISSION (OCM)
Shared Package
ML18041A146	List: ML20207N223 ML20207N238 ML20207N247 ML20207N259 ML20207N272
References
AEOD-C605, NUDOCS 8701140084
Download: ML20207N259 (1)

Text

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j$ 1 E MEMORANDUM FOR: Chairman Zech , AE0D/C605 Comissioner Roberts -

Comissioner Asselstine Comissioner Bernthal Comissioner Carr FROM: Victor Stello, Jr.

Executive Director for Operations

SUBJECT:

CASE STUDY REPORT - OPERATIONAL EXPERIENCE

-INVOLVING LOSSES OF ELECTRICAL INVERTERS Enclosed for your information is a copy of the final AE0D case study report on operational experience involving losses of electrical inverters. The study was initiated based on the observation of a lack of overall industry-wide improvement in the operational performance of these devices and the operational data which show that inverter losses can result in plant transients and/or the malfunctioning of safety-related and other important plant equipment. The primary focus of the study was to identify the principal contributing causes for the occurrence of inverter loss events.

The enclosed report documents AE0D's findings, conclusions, and recommendations resulting from the study and reflects the results of the peer review process.

The AE0D report has been forwarded to NRR and IE for appropriate action, and to RES and the Regions, INP0, and NSAC for information.

I would be pleased to provide any clarification or further information that you may desire.

Victor Stello, Jr.

Executive Director for Operations

Enclosure:

As stated cc w/ enclosure: Distribution:

SECY POR J. Heltemes OGC AE0D CF F. Hebdon ACRS AE0D SF S. Rubin ROAB CF M. Chiramal ROAB SF F. Ashe V. Stello M. Williams J. Roe K. Black

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NAME : FAshe:cg  : MChiramal  : SRubin SPf7.  : CJ ltemes : VStello  :

_____:____________:-___________._________ , %___ __FHebdon DATE : 12/is/86  : 12/81/86  : 12//T/86  : 12/31/86  : 12/31 /86  : 12/ /86  :

0FFICIAL RECORD COPY

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