ML24018A095

Engine Systems, Inc., 10CFR21 Reporting of Defects and Non-Compliance Report No. 10CFR21-0137, Rev. 0

ML24018A095
Person / Time
Site:	Sequoyah
Issue date:	01/04/2024
From:	Woolard S Engine Systems
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
10CFR21-0137, Rev 0
Download: ML24018A095 (1)

Text

{{#Wiki_filter:ENGINE SYSTEMS, INC. 175 Freight Road Teleph one: 252/977 -2 720 Ro cky Mo un t, NC 2 7804 Fax : 252/446-1134

January 4, 2024

U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001

Subject:

1 0CFR21 Reporting of Defects and Non-Compliance - Engine Systems, Inc. Report No. 10CFR21-0137, Rev. 0

EMO Cylinder Liner with Bore Deficiency P/N 9318833 (Component of Power Assembly P/N 40124897) S/N 20M0938

Dear Sir/ Madam:

The enclosed report addresses a reportable notification for an EMO Cylinder Liner with Bore Deficiency P/N 9318833 (component of power assembly P/N 40124897), S/N 20M0938.

A copy of the report has also been mailed to our affected nuclear customer. Please sign below, ackn o wledging receipt of this report, and retu rn a copy to the attention of Document Control at the address above (or, fax to number 252/446-3830) within 10 working days after receipt.

Yours very truly,

ENGINE SYSTEMS, INC. ~-- ;f)~,e Susan Woolard Document Control Coordinator

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: __ _ _ __ _ _ _ 71

DATE:

Quality Performance With Pride ENGINE SYSTEMS, INC. 175 Freight Road, Rocky Mount, NC 27804 Telephone : 252/977-2720 Fax : 252/446-1 134

Report No. 10CFR21-0137 Rev. O: 01/04/24

1 0CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE

COMPONENT: EMO Cylinder Liner with Bore Deficiency PIN 9318833 (component of power assembly PIN 40124897) S/N 20M0938

SYSTEM : Emergency Diesel Generator

CONCLUSION: Reportable in Accordance With 10CFR21

Prepared By: _)..,v.._ ~ --<:Jfn,,.-__.E_n_g_in_e_e-ri_n_g_M_a_n_a_g_er _____ _

Reviewed By: ----~""'--"'"---'--{W-________ _ Date: I )~/2~ Quality Manager

Quality Performance With Pride .J

Report No. 10CFR21-0137

Record of Revisions Pag e: 1 of 1

R EV DATE PA GE DESCRIPTION

0 01/04/24 Original Issue.

Report No. 1 0CFR21-0137 Revision : 0 Date : 01/04/24 Page : 1 of 3

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 bas ic component supplied within the United States which fails to comply or contains a defect. EMO Cylinder Liner, PIN 9318833, SIN 20M0938 Component of Fork Power Pack Assembly, PIN 40124897, SIN 23H1306

(iii) Identification of the firm supplying the basic component which fails to comply or contains a defect. Engine Systems Inc. (ES/)

(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. An edge or lip in the bore of an EMO cylinder liner prevented successful installation of the corresponding power assembly on an emergency diesel generator set. The lip is located axially at the bottom of the inlet ports and is present around the circumference of the bore. See photos of the power assembly, liner, and air inlet ports on page 3. The EMO model 645E4 is a 2-stroke engine with air inlet ports in the wall of the cylinder liner. As the piston travels below the inlet ports, air box pressure scavenges and replenishes air to the power assembly. Installation of the power assembly requires lowering the piston through the liner in order to secure the connecting rod to the crankshaft. During this process the piston could not be lowered below the inlet ports due to the piston rings catching on the lip. The power assembly was not installed and therefore there was no safety hazard ; however, if the defect had gone undetected there was the potential to damage engine components and possibly reduce load carrying capacity of the engine.

(v) The date on which the information of such defect or failure to comply was obtained. November 27, 2024

(vi) In the case of a basic component wh ich 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 fo r, manufactured, or being manufactured for one or more facilities or activities subject to the regulations in this part. The extent of condition is this single cylinder liner, PIN 9318833, SIN 20M0938 used in the power assembly shown below.

Customer Customer ES/ Sales Part Number Serial PO Order Ordered Date Number ESI C-of-C

Tennessee Valley Authority-7332773 3023002 40124897 23H1306 10/4/2023 Sequoyah Nuclear Plant (Fork Power Pack ) Rep ort No. 10CFR21-0137 Revision: 0 Date: 01/04/24 Page: 2 of 3

(vii) T he corrective a ction which has been, is being, or will be taken ; the name of the individual or or ganiza tion responsible for the action ; and the length of time that has been or will be taken to complet e the action. For TVA-Se quoyah: No action required; the power assembly has been returned to ES/.

For ES/: To prevent reoccurrence, ES/ has revised the dedication package to include verification that bore machining is continuous along the entire length and no edges or lips are present. The revision was implemented on December 6, 2023.

(viii) An y advice related to the potential defect or failu re to comply ab out the fa cility, activity, or ba sic co mponent tha t has been, is bein g, or will be given to purchasers or licensees. See photos on p age 3 showi ng location of the lip in the bo re. ,I Report No. 1 0CFR21-0137 Revision : 0 Date : 01/04 /24 Page : 3 of 3

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Location of Lip in Liner Bore at Bottom of Inlet Ports}}