ML16162A680

Part 21 - Not Approved Current Transformers Installed in Safety Related Equipment

ML16162A680
Person / Time
Site:	Millstone, Byron
Issue date:	06/03/2016
From:	Salsbury E Ametek Solidstate Controls
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
51972
Download: ML16162A680 (4)

Text

0610312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 51972 Rep Org: AMETEK SOLIDSTATE CONTROLS Notification Date I Time: 06/02/2016 16:30 (EDT)

Supplier: SIGNAL TRANSFORMER Event Date I Time: 06/02/2016 (EDT)

Last Modification: 06/02/2016 Region: 3 Docket#:

City: COLUMBUS Agreement State: Yes County: License#:

State: OH NRC Notified by: ETHAN SALSBURY Notifications: DAN SCHROEDER R1DO HQ Ops Officer: DONG HWA PARK DAVID HILLS R3DO Emergency Class: NON EMERGENCY PART 21/50.55 REACTORS EMAIL 10 CFR Section:

21.21 (d)(3)(i) DEFECTS AND NONCOMPLIANCE PART 21 - NOT APPROVED CURRENT TRANSFORMERS INSTALLED IN SAFETY RELATED EQUIPMENT The following was excerpted from the Ammeter Part 21 Report:

"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 1OCFR 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:

0610312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2

- 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.

\. \

SOLIDSTATE CONTROLS

.\METEK Quality Assurance 875

Dearborn Drive,

Columbus, OH 43085 U.S.A.

Telephone: 614-846-7500, 1-800-635-7300 E-mail: ethan.salsbury@ametek.com June 2, 2016 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Attention: Document Control Desk

Subject:

Notification of Potential Defect - 1OCFR Part 21 Product: 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 1OCFR Part 21. Please contact me if you require any further information.

Sincerely, c!!df-4?

Ethan Salsbury Quality Supervisor Ametek Solidstate Controls

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COMPONENT DESCRIPTION:

.AMETEK 1OV, 60 Hz Current transformer manufactured by Signal Transformer with Manufacturer Part Number R-10607 and Ametek Part Number 80-310879-90, rev. A.

PROBLEM YOU COULD SEE:

Current Transformers manufactured by Signal Transformer, which is not approved as an Ametek nuclear supplier, was installed in safety-related equipment. This was realized after quality issues surfaced with the transformer in question. After further evaluation, the discrepancies below were discovered. Affected transformers can be readily identified by a white label that states "Signal Transformer" with a manufacturer's part number of R-10607.

• 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 e 180 °C insulation system provided instead of the approved 200 °C system and unapproved materials used which impacts the aging analysis CAUSE:

The part was manufactured in-house to approved materials and methods prior to outsourcing in July of 2015 to a commercial transformer manufacturer.

EFFECT ON SYSTEM PERFORMANCE:

Loss of static switch transfer function on output overload/fault conditions. Unit will attempt to retain load and may default to current limited output with reduced voltage if overload is excessive.

ACTION REQUIRED:

Ametek Solidstate Controls will replace all current transformers manufactured by Signal Transformer with transformers manufactured by Ametek Solidstate Controls.

AMETEK SOLIDSTATE CONTROLS CORRECTIVE ACTION:

To replace the transformers, Ametek Solidstate Controls will work with you to arrange replacements. Please contact our Client Services group at 1-614-846-7500.

mailto:eric.phillips@ametek.com