ML20350B551
| ML20350B551 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 12/10/2020 |
| From: | Darrell Roberts Engine Systems |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML20350B551 (5) | |
Text
1111 03:52:36 p.m. 12-10-2020 1 /5 ENGINE SYSTEMS, INC.
175 Freight Road Telephone: 252/977-2720 Rocky Mount, NC 27804 Fax: 252/446-1134 TELEFAX Date: December 10, 2020 Company: NRC Operations Center Fax Number: 301/816-5151 Verification No.: 301/816-5100
Reference:
Report No. 10CFR21-0130, Rev. 0 From: Dan Roberts Page: 1 of 5
Dear Sir/ Madam:
Following this cover is a copy of our report 10CFR21-0130, Rev. 0, for a 10CFR21 reportable notification on a camshaft key, P/N KSV-16-6E#1.
A copy of this report will be mailed to the NRC Document Control Desk and to our affected nuclear customer.
Should you have questions, please let us know.
Sincerely, ENGINE SYSTEMS, INC.
Dan Roberts Quality Manager Quality Performance With Pride
1111 03:52:52 p.m. 12-10-2020 2 /5 ENGINE SYSTEMS, INC.
175 Freight Road, Rocky Mount, NC 27804 Telephone: 252/977-2720 Fax: 252/446-1134 Report No. 10CFR21-0130 Rev. O: 12/10/20 10CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE COMPONENT: Camshaft Key P/N KSV-16-6E#1 SYSTEM: Emergency Diesel Generator CONCLUSION: Reportable in Accordance With 10CFR21 Prepared By:-~"-'- }{_v-"',/;M,"-'-.
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Quality Assurance Manager Date:
Quality Performance With Pride
1111 03:53:06 p.m. 12-10-2020 3 /5 Report No. 10CFR21-0130 Record of Revisions Page: 1 of 1 REV DATE PAGE DESCRIPTION 0 12/10/20 Initial issue.
1111 03: 53: 14 p.m. 12-10-2020 4 /5 Report No. 10CFR21-0130 Revision: 0 Date: 12110120 Page: 1 of 2 Pursuant to 10 CFR 21.21(dl(4}, ESI is presenting the required information as follows:
(i) Name and address of the individual or individuals informing the Commission.
John Kriesel Dan Roberts Engineering Manager Quality 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.
Camshaft key, PIN KSV-16-6E#1.
(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.
ES/ supplied stepped camshaft keys with an incorrect stamping. The keys are stamped "AFT" on one end to identify orientation during installation. Keys supplied by ES/ have AFT" stamped on the opposite end of where they should be stamped. If installed incorrectly and the condition goes undetected during post-maintenance inspection activities, engine performance could suffer resulting in inability of the emergency diesel generator set to perform its safety-related function. This issue is therefore considered to be a reportable defect as defined by 10CFR-part 21.
The key is used in early Cooper-Bessemer model KSV diesel engines to locate the fuel pump cam on the engine's camshaft. This design has a stepped arrangement to provide 4-1/2° timing retard. The key is stamped "AFT" to designate the end facing the generator end of the engine. An additional "CAM" stamping designates the cam (up) surface. In the event the key is stamped incorrectly, it is feasible the key could be installed backward which would advance the timing by 9' from the desired position. See below for views showing the correct stepped key and corresponding cam installation.
INSTALL K£Y wm+ WORD 'CAM" UP FAC.ING FUEL CAM AND WITH WORD*AFT* FACING G,E:NEAATQR END OF ENGINE:.
Figure 1: Stepped Camshaft Key Figure 2: Key & Cam Installation (v) The date on which the information of such defect or failure to comply was obtained.
October 20, 2020
1111 03:53:46 p.m. 12-10-2020 5/5 Report No. 10CFR21-0130 Revision: 0 Date: 12/10120 Page: 2 of 2 (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.
The extent of condition is limited to this specific part number supplied on two orders as shown in the table below:
Customer PO ESI Sales Qty Part Number Customer C ofC Date Number Order Shipped Nebraska Public Power Dlstrict - 4500106009 3006001 5 08/06/09 KSV-16-6E#1 Cooper Nuclear Station 4500106222 3006017 5 08/06/09 Table 1: ESI Supply History Camshaft Key P/N KSV-16-3E#1 (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.
For affected users:
- Camshaft keys installed on engine:
No action is required provided post-maintenance injection timing was verified and subsequent engine performance was successful. An incorrectly installed key would be evident by a shift in fuel injection timing. If injection timing and/or engine performance has not been verified, then additional inspections should be performed to verify installed keys from the above referenced orders are oriented properly.
- Camshaft keys in inventory (not-installed) on engine:
Cooper Nuclear may elect to correct the mislabeled condition or return to ES/ for rework. To correct the condition, surface grind to remove the existing "AFT" stamping. Stamp opposite end with "AFT" designation. See Figure 3 for visual depiction of correct stamping.
For ES/:
The dedication report will be revised to add clarification of the correct end for the "AFT" stamping.
Guidance as shown in Figure 3 will be used. This will be completed by December 18, 2020.
CORRECT INCORRECT Figure 3: Correct vs Incorrect Stamping on Camshaft Key (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.