ML19042A080

Part 21 Report No. 10CFR21-0124-INT; Rev. 0 - Saturable Reactor (Magnetic Amplifier) for Vickers Voltage Regulator System, P/N 8408218-ESI

ML19042A080
Person / Time
Site:	Monticello, Surry, Turkey Point
Issue date:	01/25/2019
From:	Woolard S Engine Systems
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML19042A080 (4)

Text

ENGINE SYSTEMS, INC. 175 Freight Road Rocky Mount, NC 27804 January 25, 2019 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Telephone:

252/977-2720 Fax: 252/446-1134

Subject:

1 OCFR21 Reporting of Defects and Non-Compliance

-Engine Systems, Inc. Report No. 10CFR21-0124-INT; Rev. 0 Saturable Reactor (Magnetic Amplifier) for Vickers Voltage Regulator System, P/N 8408218-ESI

Dear Sir:

The enclosed report addresses an on-going evaluation regarding a saturable reactor (magnetic amplifier) for Vickers voltage regulator system, P/N 8408218-ESI.

The evaluation is, expected to be completed no later than March 22, 2019. Please sign below, acknowledging receipt of this report, and return a copy to the attention of Document Control at the address above ( or, fax to number 252/446-1134) within 10 working days after receipt. Yours very truly, ENGINE SYSTEMS, INC. ( ' Susan Woolard Document Control Coordinator Please let us know if ANY of your mailing information changes

• n~me of recipient, name of company/facility, address, etc. Mark the changes on this acknowledgment form and send to us by mail or FAX to the number above. RECEIVED:---------

93 DATE: Quality Performance With Pride

,._ ENGINE SYSTEMS, INC. 175 Freight Road, Rocky Mount, NC 27804 Telephone:

252/977-2720 Fax: 252/446-1134 COMPONENT:

SYSTEM: CONCLUSION:

Prepared By: Reviewed By: Report No. 10CFR21-0124-INT Rev. 0: 01/24/19 INTERIM REPORT 10CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE Saturable reactor (magnetic amplifier) for Vickers voltage regulator system P/N 8408218-ESI Emergency Diesel Generator

-voltage regulator system Not yet completed Date: J /z4/11 Engineering Manager fl f2elr Date: 11;; LJu1 Quality Assurance Manager Quality Performance With Pride Report No. 1 OCFR21-0124-INT Record of Revisions Page: 1 of 1 REV DATE PAGE DESCRIPTION 0 01/24/19 Initial issue.

COMPONENT:

Saturable reactor; P/N 8408218-ESI PURPOSE: Report No. Revision:

Date: Page: 1 OCFR21-0124-INT 0 01/24/19 1 of 1 This interim report is issued because Engine Systems, Inc. (ESI) has not able to complete an evaluation of an identified deviation within the 60-day requirement of 1 OCFR21.21.

The evaluation is expected to be completed no later than March 22, 2019.

SUMMARY

ESI was notified on December 6, 2018 of a potential issue with saturable reactors (also referred to as magnetic amplifiers) supplied to Monticello Nuclear Generating Plant. ESI provided the reactors as like-for-like replacements for the existing magnetics of the original Vickers voltage regulator and static exciter. During system testing performed by Monticello at another vendor facility, issues with the static excitation system were identified which prevented proper control of the generator field current. Troubleshooting identified several potential causes and ESI believes there may be a potential deficiency in the saturable reactor, P/N 8408218-ESI.

This component is integral to operability of the Vickers style voltage regulator and static exciter systems used on many emergency diesel generator sets in the nuclear industry.

A deficiency in the reactor would adversely affect the ability to control generator output voltage and therefore adversely affect emergency diesel generator set performance.

ESI is in the process of performing additional testing and analysis at the transformer manufacturer's facility to determine if a deficiency exists in this component.

ESI is unable to complete an evaluation within the 60-day requirement.

EXTENT OF CONDITION

/ INTERIM CONTAINMENT ESI has supplied the reactor to the customers listed below. To ESl's knowledge, none of the components have been installed.

In conjunction with submittal of this interim Part 21 report, ESI is notifying each of the customers and advising not to install the reactors until the evaluation is complete.

ESI will also withhold shipment of any reactors until the evaluation is complete.

Part Number Description Customer Customer PO# Qty ESI Order C-of-C Date Dominion Virginia Power -45936798 6 3010193 7/31/2013 Surry Power Station Florida Power & Light -02313521/00013 1 3010993 10/18/2013 8408218-ESI Saturable Turkey Point Reactor Florida Power & Light -4/30/2014 (qty 3) 02318321/00032 5 3012629 Turkey Point I 8/1/2014 (qty 2) Northern States Power -I Monticello 4000002229 18 8002765 7/30/2018 i