The following was excerpted from the
Ametek Part 21 Report received via email:
Ametek inverter manufactured with Signal Transformer R-10607, Ametek part number 80-310879-90 was inadvertently installed in several units from an unapproved supplier. The potential for this situation to occur exists for new equipment delivered between July of 2015 and May of 2016. Affected utilities and equipment serial numbers are identified below.
Dominion Nuclear Connecticut, Millstone
96000067-0411, 96000067-0511, 96000067-0611, 96000067-0711
Krsko Nuclear Power Plant
96000068-0211, 96000068-0311, 96000068-0411
Exelon, Byron Station
96000075-0311, 96000075-0411, 96000075-0511, 96000075-0611
Ametek Solidstate Controls is submitting the following Report of a Potential Defect in accordance with the requirements of 10CFR Part 21.
To replace the transformers, Ametek Solidstate Controls will work with you to arrange replacements. Please our Client Services group at 1-614-846-7500. mailto: eric.phillips@ametek.com
The potential problems include:
- Mag wire terminated with improper lug and tooling which may cause loss of feedback to static transfer function.
- Spot welded band around the core which has not been adequately seismically evaluated.
- 180 degree Celsius insulation system provided instead of the approved 200 degree Celsius and unapproved materials used which impacts the aging analysis.
- * * UPDATE FROM ETHAN SALSBURY TO VINCE KLCO ON 6/3/2016 AT 1103 EDT * * *
Serial numbers for KRSKO and Millstone are corrected as follows:
Dominion Nuclear Connecticut, Millstone
96000068-0211
96000068-0311
96000068-0411
KRSKO Nuclear Power Plant
96000067-0411
96000067-0511
96000067-0611
96000067-0711
Notified the R1DO (Schroeder), R3DO (Hills) and Part 21 Group via email.