Part 21 Report - 1997-690
ACCESSION #: 9709090321
ABB
September 4, 1997
Document Control Desk
U.S. Nuclear Regulatory Commission
Washington, DC 20555
Subject: Report of Potential Deviation per 10CFR Part 21
Possible Crack Contact Block on CVQ Class 1E Relays
Notification By: ABB Power T&D Company Inc.
Power Automation and Protection Division
4300 Coral Ridge Dr.
Coral Springs, FL 33065
This letter is a notification of a potential defect on the Class 1E type
CVQ relay, style numbers 1339D96A01 and 1339D96A02.
This defect consists of a potential cracked contact block on the polar
element assembly. The crack may cause a short between the contact and
the frame of the polar element. The crack may be caused by the excessive
length of the screw that retains the contact block to the polar element
frame.
The solution to the problem is to add a flat washer to the assembly in
order to relieve any possible stress.
A copy of this notification is being sent to all customers who our
records indicate have purchased this type of relay.
Questions concerning this notification letter should be directed to the
Quality Manager at the Power Automation & Protection Division at
954-752-6700 or Fax 954-345-5329.
Marilinda Ruiz Jose Gierbolini
Quality Manager Site Manager
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
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