ML12045A527
| ML12045A527 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 02/03/2012 |
| From: | Woolard S Engine Systems |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| P/N 2-01H-050-003 10CFR21-0104, Rev 0 | |
| Download: ML12045A527 (6) | |
Text
EI ENGINE SYSTEMS, INC.
ES 175 Freight Road Rocky Mount, NC 27804 Telephone: 252/977-2720 Fax: 252/446-1134 February 3, 2012 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001
Subject:
1 OCFR21 Reporting of Defects and Non-Compliance -
Engine Systems, Inc. Report No. 10CFR21-0104, Rev. 0 NPPD Fuel Hose, P/N 2-01 H-050-003
Dear Sir:
The enclosed report addresses a reportable notification on a fuel hose for Nebraska Public Power District - Cooper Nuclear Station, P/N 2-01 H-050-003.
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
ES ENGINE SYSTEMS, INC.
175 Freight Road, Rocky Mount, NC 27804 Telephone: 252/977-2720 Fax: 252/446-1134 Report No.
Rev. 0:
10CFR21-0104 02/02/12 10CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE COMPONENT:
SYSTEM:
CONCLUSION:
NPPD fuel hose 2-01 H-050-003 Emergency Diesel Generator Reportable in Accordance With 10CFR21 4ý2 Prepared By:
Date:
___/_
7 Engineering Manager Reviewed By:
Quality Assurance Manager Date: *?-,-/,7.2 Quality Performance With Pride
Report No.
10CFR21-0104 Record of Revisions Page:
1 of 1 REV DATE PAGE DESCRIPTION 0
02/02/12 Initial issue.
Report No.
10CFR21-0104 Revision:
0 Date:
02/02/12 Page:
1 of 3 COMPONENT:
Fuel hose for Nebraska Public Power District - Cooper Nuclear Station, P/N 2-01 H-050-003.
SUMMARY
Engine Systems Inc. (ESI) began a 10CFR21 evaluation on 12/01/11 upon review of a hose returned by Nebraska Public Power District (NPPD), Cooper Nuclear Station. NPPD returned one (1) high pressure fuel hose, P/N 2-01H-050-003 because they found foreign material within the hose during their receipt inspection process. This was one (1) of four (4) P/N 2-01 H-050-003 hoses supplied by ESI on sales order 3008266. The evaluation was concluded on 01/30/12 and determined the occurrence of foreign material in the fuel hose to be a reportable defect as defined by 10CFR21.
The foreign material found during inspection of the returned hose assembly was determined to be very small pieces of the elastomer tube internal to the hose.
It appears these pieces were introduced during assembly of the end fittings onto the hose during fabrication of the hose assembly.
The hose, P/N 2-011H-050-003, is located after the engine fuel filter and before the fuel injection pumps. Foreign material within this hose could migrate to the fuel injection pumps. The entrance of foreign material could impact operability of one or more fuel injection pumps and therefore affect fuel delivery to one or more engine cylinders. This could impact the load carrying capability of the diesel engine or possibly complete engine shutdown. Either scenario has the potential to prevent the emergency diesel generator from performing its safety related function.
DISCUSSION:
This hose is used in the fuel oil supply piping on the KSV diesel engine; it is located in the piping between the engine fuel filter and the fuel injector pumps (see Figure 1 and 2) and is unique to the NPPD-Cooper Station engines.
-29.75" NOMINAL LENGTH 1
ORY EALFAEROQLJIP HOSE PIPE THF.
FIGURE 1 FUEL HOSE #2-01 H-050-003
Report No.
Revision:
Date:
Page:
1 OCFR21-0104 0
02/02/12 2 of 3 Fuel filters r--
______HAF FIGURE 2 LOCATIONS OF FUEL HOSE #2-01 H-050-003
Report No.
Revision:
Date:
Page:
1 0CFR21-0104 0
02/02/12 3 of 3 AFFECTED USERS AND SHIPMENTS:
Previous shipments of the hose, part number 2-01 H-050-003, are identified below.
Affected shipments Part Number 2-01 H-050-003 2-01 H-050-003 2-01 H-050-003 Customer ESI S.O.
Cust. P.O.
NPPD-Cooper 3008266 4500132314 NPPD-Cooper 3007377 4500121165 NPPD-Cooper 112509 4500034077 Qty 4*
1 3
Ship Date Oct. 2011 Feb. 2011 Oct. 2003
~1~~~~~
- one of these returned for this.evaluation CORRECTIVE ACTIONS:
Hoses remaining in customer inventory should be inspected to verify they are free of foreign material prior to installation. Any hoses previously installed on the EDG are not suspect as operability has been confirmed via functional testing.
To prevent recurrence of this issue, the dedication report for the hose assembly has been revised to include a requirement to solvent flush each hose prior to shipment. Filtered solvent will be pumped through the hose for a minimum of 5 minutes. After flushing, nitrogen will be blown through the hose to remove excess flushing fluid and a detailed visual inspection will be performed to ensure there are no visible contaminants immediately prior to installation of the hose end caps.
This flushing requirement was already included in the dedication reports for other critical application hose assemblies so this notification is being limited to this part number only.