United States Nuclear Regulatory Commission - Protecting People and the Environment


ACCESSION #:  9704040213



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                                   ABB



March 28, 1997



Document Control Desk

U.S.  Nuclear Regulatory Commission

Washington, DC 20555



Subject:  Report of Potential Deviation per 10CFR Part 21

          ZPA Ratings for Class 1E Relays



Notification by:    ABB Power T&D Company Inc.

                    Power Automation and Protection Division

                    4300 Coral Ridge Drive

                    Coral Springs, FL 33065



This letter is to correct the information provided in the September 17,

1996, Report of Potential Deviation related to ZPA Ratings for Class 1E

Relays.



The above mentioned letter was issued as a result of the Surveillance

audit 96-066 and a follow-up visit performed by Yankee Atomic Electric

Company at ABB Power T&D Company Inc.  (PAPD) in Coral Springs, Fl.



After further analysis and evaluation of the available qualification

documents, ABB concluded that the only Class 1E Relays whose original ZPA

should have been revised were the CRN-1, CVE, CVE-1, CVQ, KD-10 and KF.



As stated in the previous report, the design and functional performance

of these relays were not affected and did not change.



Attached is a revised list of relays with correct ZPA ratings.  Please

disregard previous published ZPA ratings list, dated September 17, 1996.



Questions regarding information in this letter should be directed to the

Quality Manager at the ABB Power Automation and Protection Division at

800-523-2620, (954) 752-6700, or fax (954) 345-5329.



Marilinda Ruiz                     Jose R. Gierbolini

Total Quality Manager              Profit Center Manager

                                   Electromechanical Relays



                       ABB Power T&D Company Inc.



Power Automation & Protection Division       4300 Coral Ridge Drive

                                             Coral Springs, FL 33065



Telephone: (954) 752-6700

Telefax: (954) 345-5329



March 28, 1997



Subject:  Report of Potential Deviation per 10CFR Part 21

          ZPA Ratings for Class 1E Relays



Table  "RELAY TYPES AND CORRECTED ZPA VALUES" omitted.



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