05000400/LER-2018-001, Automatic Actuation of Auxiliary Feedwater System
| ML18156A438 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 06/05/2018 |
| From: | Hamilton T Duke Energy Progress |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| HNP-18-048 LER 2018-001-00 | |
| Download: ML18156A438 (5) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 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)(i) 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)(vii), Common Cause Inoperability 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) |
| 4002018001R00 - NRC Website | |
text
( ~ DUKE ENERGY Tanya M. Hamilton Vice President Harris Nuclear Plant 5413 Shearon Harris Road New Hill, NC 27562-9300 919.362.2502 10 CFR 50.73 June 5, 2018 Serial: HNP-18-048 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 2018-001-00 Ladies and Gentlemen:
Duke Energy Progress, LLC, submits the enclosed Licensee Event Report 2018-001-00 in accordance with 10 CFR 50.73 for Shearon Harris Nuclear Power Plant, Unit 1 (HNP). This report details the automatic actuation of the auxiliary feedwater system that occurred on April 7, 2018, while the site was descending modes at the start of refueling outage H1 R21.
This event had no significance with respect to the health and safety of the public. There are no regulatory commitments contained within this report.
Please refer any questions regarding this submittal to Jeff Robertson, Manager - Regulatory Affairs, at (919) 362-3137.
Sincerely, Tanya M. Hamilton Enclosure: Licensee Event Report 2018-001-00 cc:
J. Zeiler, NRC Senior Resident Inspector, HNP M. Barillas, NRC Project Manager, HNP C. Haney, NRC Regional Administrator, Region II
Tanya M. Hamilton Vice President Harris Nuclear Plant 5413 Shearon Harris Road New Hill, NC 27562-9300 919.362.2502 10 CFR 50.73 June 5, 2018 Serial: HNP-18-048 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 2018-001-00 Ladies and Gentlemen:
Duke Energy Progress, LLC, submits the enclosed Licensee Event Report 2018-001-00 in accordance with 10 CFR 50.73 for Shearon Harris Nuclear Power Plant, Unit 1 (HNP). This report details the automatic actuation of the auxiliary feedwater system that occurred on April 7, 2018, while the site was descending modes at the start of refueling outage H1R21.
This event had no significance with respect to the health and safety of the public. There are no regulatory commitments contained within this report.
Please refer any questions regarding this submittal to Jeff Robertson, Manager - Regulatory Affairs, at (919) 362-3137.
Sincerely, Tanya M. Hamilton Enclosure: Licensee Event Report 2018-001-00 cc:
J. Zeiler, NRC Senior Resident Inspector, HNP M. Barillas, NRC Project Manager, HNP C. Haney, NRC Regional Administrator, Region II
( ~ DUKE ENERGY
NRC FORM 366 (04-2018)
U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT (LER)
(See Page 2 for required number of digits/characters for each block)
(See NUREG-1022, R.3 for instruction and guidance for completing this form http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1022/r3/)
APPROVED BY OMB: NO. 3150-0104 EXPIRES: 03/31/2020
, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
NRC FORM 366 (04-2018) 05000
- 3. Page 1
OF
- 4. Title
- 5. Event Date Month Day Year
- 6. LER Number Year Sequential Number Rev No.
- 7. Report Date Month Day Year
- 8. Other Facilities Involved Facility Name Docket Number 05000 Facility Name Docket Number 05000
- 9. Operating Mode
- 10. Power Level
- 11. This Report is Submitted Pursuant to the Requirements of 10 CFR §: (Check all that apply) 20.2201(b) 20.2201(d) 20.2203(a)(1) 20.2203(a)(2)(i) 20.2203(a)(2)(ii) 20.2203(a)(2)(iii) 20.2203(a)(2)(iv) 20.2203(a)(2)(v) 20.2203(a)(2)(vi) 20.2203(a)(3)(i) 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)(i)(C) 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)(vii) 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) 73.77(a)(1) 73.77(a)(2)(i) 73.77(a)(2)(ii)
Other (Specify in Abstract below or in Page of 05000-
- 3. LER NUMBER YEAR SEQUENTIAL NUMBER REV NO.
C. Causal Factors The direct cause of this event was the scheduling of a clearance hang under conditions in which the clearance should not have been hung. As such, this is a work scheduling issue.
D. Corrective Actions
Immediate action was taken by Operations to secure the "B" MFP while its discharge valve was stroking closed before any parameters went out of band. In addition, an additional review of all outage complex clearances was performed prior to approval to ensure required information was properly documented before clearances were hung. A communication was made to Operations to ensure Subject Matter Expert reviews are rigorous, prioritized, complete and understood by all involved in the clearance writing process prior to clearance preparation completion. Schedule logic ties for the subject control power breaker circuit were made for outage recovery to prevent re-occurrence on clearance lift.
E. Safety Analysis
The actuation of the AFW system was valid, and the system responded to plant conditions as designed. There is no safety consequence as a result of this event. The cause was attributed to a less than adequate evaluation of plant conditions required for the clearance hang and not due to any equipment failures. All plant systems responded as designed. This event did not impact the health and safety of the public.
F. Additional Information
There have been no events related to unplanned automatic actuation of the AFW system at Harris within the past three years. There are no NRC commitments contained in this LER.
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