05000400/LER-2016-002, Regarding a Essential Services Chilled Water Chiller Trip Due to Oil Leak from Failed Tube Fitting
| ML16263A251 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 09/19/2016 |
| From: | Waldrep B Duke Energy Progress |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| HNP-16-071 LER 16-002-00 | |
| Download: ML16263A251 (5) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(x) |
| 4002016002R00 - NRC Website | |
text
(~ DUKE ENERGY SEP 19 2016 Serial: HNP-16-071 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Shearon Harris Nuclear Power Plant, Unit 1 Docket No. 50-400/Renewed License No. NPF-63 Subject: Licensee Event Report 2016-002-00 Ladies and Gentlemen:
Benjamin C. Waldrep Vice President Harris Nuclear Plant 5413 Shearon Harris Road New Hill NC 27562-9300 919.362.2502 10 CFR 50.73 Duke Energy Progress, Inc., submits the enclosed Licensee Event Report 2016-002-00 in accordance with 10 CFR 50. 73 for Shearon Harris Nuclear Power Plant, Unit 1. This report details a trip of 'A' train Essential Service Chilled Water chiller due to low oil pressure that occurred on July 22, 2016. The direct cause was oil leakage through a tube fitting. Corrective actions were implemented and further evaluation is underway.
This document contains no regulatory commitments. Please refer any questions regarding this submittal to John Caves at (919) 362-2406.
Sincerely, Enclosure: Licensee Event Report 2016-002-00 cc:
Mr. M. J. Riches, NRC Sr. Resident Inspector, HNP Ms. M. Barillas, NRC Project Manager, HNP Regional Administrator, Region II
Benjamin C. Waldrep Vice President Harris Nuclear Plant 5413 Shearon Harris Road New Hill NC 27562-9300 919.362.2502 10 CFR 50.73 Serial: HNP-16-071 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Shearon Harris Nuclear Power Plant, Unit 1 Docket No. 50-400/Renewed License No. NPF-63 Subject: Licensee Event Report 2016-002-00 Ladies and Gentlemen:
Duke Energy Progress, Inc., submits the enclosed Licensee Event Report 2016-002-00 in accordance with 10 CFR 50.73 for Shearon Harris Nuclear Power Plant, Unit 1. This report details a trip of A train Essential Service Chilled Water chiller due to low oil pressure that occurred on July 22, 2016. The direct cause was oil leakage through a tube fitting. Corrective actions were implemented and further evaluation is underway.
This document contains no regulatory commitments. Please refer any questions regarding this submittal to John Caves at (919) 362-2406.
Sincerely, Benjamin C. Waldrep Enclosure: Licensee Event Report 2016-002-00 cc:
Mr. M. J. Riches, NRC Sr. Resident Inspector, HNP Ms. M. Barillas, NRC Project Manager, HNP Regional Administrator, Region II
LICENSEE EVENT REPORT (LER)
NRC FORM 366 (06-2016)
U.S. NUCLEAR REGULATORY COMMISSION Estimated burden per response to comply with this mandatory collection request: 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />.
Reported lessons learned are incorporated into the licensing process and fed back to industry.
Send comments regarding burden estimate to the FOIA, Privacy and Information Collections Branch (T-5 F53), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by e-mail to Infocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, NEOB-10202, (3150-0104), Office of Management and Budget, Washington, DC 20503. If a means used to impose an information collection does not display a currently valid OMB control number, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2018 (See Page 2 for required number of digits/characters for each block) 1 OF
- 3. PAGE 05000
- 4. TITLE
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR SEQUENTIAL NUMBER REV NO.
FACILITY NAME 05000 DOCKET NUMBER FACILITY NAME 05000 DOCKET NUMBER
- 9. OPERATING MODE
- 10. POWER LEVEL
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply)
- 12. LICENSEE CONTACT FOR THIS LER LICENSEE CONTACT TELEPHONE NUMBER (Include Area Code) CAUSE SYSTEM COMPONENT MANU-FACTURER REPORTABLE TO EPIX
CAUSE
SYSTEM COMPONENT MANU-FACTURER REPORTABLE TO EPIX
- 14. SUPPLEMENTAL REPORT EXPECTED YES (If yes, complete 15. EXPECTED SUBMISSION DATE)
NO
- 15. EXPECTED SUBMISSION DATE YEAR DAY MONTH ABSTRACT (Limit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines)
NRC FORM 366 (06-2016)
YEAR YEAR DAY MONTH 20.2201(b) 20.2203(a)(3)(i) 50.73(a)(2)(vii) 20.2203(a)(2)(ii) 20.2203(a)(2)(i) 20.2203(a)(1) 20.2201(d) 20.2203(a)(2)(iii) 20.2203(a)(2)(iv) 20.2203(a)(2)(v) 20.2203(a)(2)(vi) 20.2203(a)(3)(ii) 20.2203(a)(4) 50.36(c)(1)(i)(A) 50.36(c)(1)(ii)(A) 50.36(c)(2) 50.46(a)(3)(ii) 50.73(a)(2)(i)(A) 50.73(a)(2)(i)(B) 50.73(a)(2)(ii)(A) 50.73(a)(2)(ii)(B) 50.73(a)(2)(iii) 50.73(a)(2)(iv)(A) 50.73(a)(2)(v)(A) 50.73(a)(2)(v)(B) 50.73(a)(2)(v)(C) 50.73(a)(2)(v)(D) 50.73(a)(2)(viii)(A) 50.73(a)(2)(viii)(B) 50.73(a)(2)(ix)(A) 50.73(a)(2)(x) 73.71(a)(4) 73.71(a)(5)
OTHER Specify in Abstract below or in Page of 05000-
- 3. LER NUMBER YEAR SEQUENTIAL NUMBER REV NO.
D. Safety Analysis
No loss of safety function occurred during the event. The B ESCW chiller was available throughout the specified period to perform the credited safety function. Thus, the failure of the A ESCW chiller has very low safety significance. At no point during the impacted period was the ESCW system required to mitigate the effects of a Design Basis Accident. Thus, there is no consequence to the health and safety of site personnel or to the public.
E. Corrective Actions
Corrective Actions Completed:
The failed tube fitting was replaced with an equivalent stainless steel fitting. This stainless steel fitting is not as susceptible to stress corrosion cracking in this environment and has higher endurance limits/fatigue strength.
Corrective Actions Planned:
Additional analysis is underway to address the vibrations present on the oil pressure differential sensing line of the A ESCW Chiller.
F. Additional Information
There have been no previous Licensee Event Reports at Harris due to a tripped ESCW Chiller from oil leakage through a tube fitting due to fatigue failure.
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