ML18102A529

10CFR21 Reporting of Defects and Non-Compliance - Engine Systems, Inc. Report No. 10CFR21-0121, Rev. 0, Refurbished Pressure Regulator Assembly, P/N 1776 506.

ML18102A529
Person / Time
Site:	Brunswick
Issue date:	04/03/2018
From:	Woolard S Engine Systems
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
10CFR21-0121, Rev. 0
Download: ML18102A529 (5)

Text

ENGINE SYSTEMS, INC.

175 Freight Road Telephone: 252/977-2720 Rocky Mount, NC 27804 Fax: 252/446-1134 April 3, 2018 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001

Subject:

10CFR21 Reporting of Defects and Non-Compliance -

En~ine Systems, Inc. Report No. 10CFR21-0121, Rev. 0 Refurbished Pressure Regulator Assembly, P/N 1776 506

Dear Sir:

The enclosed report addresses a reportable notification on a refurbished pressure regulator assembly, P/N 1776 506.

A copy of the report has been mailed to our affected nuclear customer.

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 Please let us know if ANY of your mailing information changes - name 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 Report No. 10CFR21-0121 Rev. 0: 03/30/18 10CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE COMPONENT: Pressure Regulator Assembly - Component Omitted During Refurbishment P/N 1776 506 SYSTEM: Emergency Diesel Generator CONCLUSION: Reportable in Accordance With 10CFR21 Prepared By: Date: 3 /30/18

~tM Engineering Manager Reviewed By: ~ f2J4- Date: 3)30 );J Quality Manager Quality Performance With Pride

~-, ..

Report No. 10CFR21-0121 Record of Revisions Page: 1 of 1 REV DATE PAGE DESCRIPTION 0 03/30/18 Initial issue.

Report No. 10CFR21-0121 Revision: 0 Date: 03/30/18 Page: 1 of 2 Pursuant to 10 CFR 21.21(d)(4), ESI is presenting the required information as follows:

(i) Name and address of the individual or individuals informing the Commission.

Dan Roberts John Kriesel Quality Manager Engineering Manager Engine Systems Inc. Engine Systems Inc.

175 Freight Rd. 175 Freight Rd.

Rocky Mount, NC 27804 Rocky Mount, NC 27804 (ii) Identification of the basic component supplied within the United States which fails to comply or contains a defect.

Pressure Regulator Assembly, PIN 1776 506.

(iii) Identification of the firm supplying the basic component which fails to comply or contains a defect.

Engine Systems Inc:

(iv) Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect of failure to comply.

ES! supplied a refurbished pressure regulator assembly, PIN 1776 506, SIN 20776487, to Brunswick Nuclear Plant in August 2017. ES/ later determined that two components of the assembly, an upper and lower diaphragm plate, were omitted during reassembly of the refurbished regulator. Reference item 8 on Figure 1 for location of the diaphragm plates within the pilot valve portion of the regulator assembly. These metal diaphragm plates distribute load and retain the associated rubber diaphragm.

Omission of the metal plate may not initially affect operation of the pilot valve and therefore may not be detected during functional testing; however over repeated cycles there is a strong possibility that the rubber diaphragm would tear or rupture without the benefit of load distribution and support provided by the metal diaphragm plate.

The regulator assembly is used in the safety-related air start system of the emergency diesel generators (EDGs) at Brunswick Nuclear Plant. Failure of the regulator to function properly due to the omission of a component within the pilot valve portion of the assembly could adversely affect the starting capability of the EOG. Since the EOG is a safety system used to ensure the safe shutdown of the nuclear reactor, this issue is considered to be a reportable defect as defined by 10CFR-part 21.

(v) The date on which the information of such defect or failure to comply was obtained.

February 1, 2018 (vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for, being supplied for, or may be supplied for, manufactured, or being manufactured for one or more facilities or activities subject to the regulations in this part.

ES/ Sales Customer ES/ Serial Mfg Serial Customer Qty C-of-C Date Order P.O. Number Number Duke Energy -

8002796 03048459 1 0812412017 8002796-5.1-1 20776487 Brunswick Nuclear Plant (vii) The corrective action which has been, is being, or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action.

The assembly has been recalled and will be reworked by ES/ using a new, dedicated repair kit and re-assembled and tested per approved procedures. An additional QA inspection will be performed to ensure presence of the diaphragm plates. This activity will be completed within the next 30 days.

(viii) Any advice related to the potential defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licensees.

NIA

Report No. 10CFR21-0121 Revision : 0 Date : 03/30/18 Page : 2 of 2 Item 8 is the diaphragm plate Figure 1: Outline Dwg of Pilot Valve Portion of Regulator Assembly