Part 21 Report - 1997-291

ACCESSION #: 9704300011 April 22, 1997 ABB Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 Subject: Our letter of March 28, 1997 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 inform you of typographical errors found in the March 28, 1997 letter with reference to revised ZPA ratings. The above mentioned letter was issued as a result of further analysis and evaluation of our available qualification documents, concluding that most of our Class 1E relays had the correct ZPA rating as originally calculated. The corrections are as follows: 1) The column heading labeled "Previous ZPA Rating (g) Letter 9/17/97" should have the year 96, not 97. 2) For the relay type SDF-1, the "Correct ZPA Rating (g)" should be 4.2, not 8.0. This letter is being sent to those customers that have purchased SDF-1 type relays. We apologize for any inconvenience this may have caused. 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 *** END OF DOCUMENT ***

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