ML16260A397: Difference between revisions
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| issue date = 09/09/2016 | | issue date = 09/09/2016 | ||
| title = Retraction of Licensee Event Report No. 2016-004-00, Salt Service Water Pump B Past Operability- Operation or Condition Prohibited by Technical Specifications | | title = Retraction of Licensee Event Report No. 2016-004-00, Salt Service Water Pump B Past Operability- Operation or Condition Prohibited by Technical Specifications | ||
| author name = Perkins E | | author name = Perkins E | ||
| author affiliation = Entergy Nuclear Operations, Inc | | author affiliation = Entergy Nuclear Operations, Inc | ||
| addressee name = | | addressee name = | ||
| Line 16: | Line 16: | ||
=Text= | =Text= | ||
{{#Wiki_filter:* | {{#Wiki_filter:*~Entergx Entergy Nuclear Operations, Inc. | ||
September 9, 2016 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 | Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth. MA 02360 September 9, 2016 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 | ||
==SUBJECT:== | ==SUBJECT:== | ||
Retraction of Licensee Event Report No. 2016-004-00, Salt Service Water Pump B Past Operability-Operation or Condition Prohibited by Technical Specifications Pilgrim Nuclear Power Station Docket No. 50-293 Renewed License No. DPR-35 | Retraction of Licensee Event Report No. 2016-004-00, Salt Service Water Pump B Past Operability- Operation or Condition Prohibited by Technical Specifications Pilgrim Nuclear Power Station Docket No. 50-293 Renewed License No. DPR-35 | ||
==REFERENCES:== | ==REFERENCES:== | ||
: 1. Letter from E.P. Perkins (Entergy Pilgrim) to U.S. Nuclear Regulatory Commission (USNRC), Licensee Event Report No. 2016-004-00: | : 1. Letter from E.P. Perkins (Entergy Pilgrim) to U.S. Nuclear Regulatory Commission (USNRC), Licensee Event Report No. 2016-004-00: Salt Service Water Pump B Past Operability- Operation or Condition Prohibited by Technical Specifications, dated July 11, 2016 (ADAMS Accession No. ML16202A053, Pilgrim Letter 2.16.038) | ||
Salt Service Water Pump B Past Operability-Operation or Condition Prohibited by Technical Specifications, dated July 11, 2016 (ADAMS Accession No. | LETTER NUMBER: 2.16.057 | ||
LETTER NUMBER: 2.16.057 | |||
==Dear Sir or Madam:== | ==Dear Sir or Madam:== | ||
In accordance with NU REG 1022, Revision 3, Section 5.1.2, Pilgrim Nuclear Power Station (PNPS) is retracting (formally withdrawing) | |||
Licensee Event Report (LER) No. 2016-004-00 (Reference 1 ). LER 2016-004-00 was submitted to the Nuclear Regulatory Commission (NRC) via PNPS Letter 2.16.038, dated July 11, 2016. The LER reported, pursuant to 10 CFR 50. 73(a)(2)(i)(B), a condition prohibited by Technical Specifications (TS). Subsequent to submittal of LER 2016-004-00, Entergy re-evaluated the condition and determined that it no longer constitutes a reportable condition pursuant to 10 CFR 50.73 and NUREG-1022 guidance. | In accordance with NU REG 1022, Revision 3, Section 5.1.2, Pilgrim Nuclear Power Station (PNPS) is retracting (formally withdrawing) Licensee Event Report (LER) No. 2016-004-00 (Reference 1). | ||
On May 10, 2016, PNPS identified a condition where the past operability of Salt Service Water (SSW) Pump B power supply breaker overload relay could not be determined due to high temperature thermography results recorded on two separate occasions, Oct'ober 25, 2013 and February 29, 2016. Subsequent review of the thermography data resulted in the overload relay and the associated SSW Pump being declared inoperable. | LER 2016-004-00 was submitted to the Nuclear Regulatory Commission (NRC) via PNPS Letter 2.16.038, dated July 11, 2016. The LER reported, pursuant to 10 CFR 50. 73(a)(2)(i)(B), a condition prohibited by Technical Specifications (TS). Subsequent to submittal of LER 2016-004-00, Entergy re-evaluated the condition and determined that it no longer constitutes a reportable condition pursuant to 10 CFR 50.73 and NUREG-1022 guidance. | ||
The relay was replaced on March 5, 2016 and the SSW Pump B was restored to operable status. LER 2016-004-00 was written to addres.s SSW Pump B past operability and.the associated impact on TS compliance as it relates to maintaining two redundant SSW sub-systems operable. | On May 10, 2016, PNPS identified a condition where the past operability of Salt Service Water (SSW) Pump B power supply breaker overload relay could not be determined due to high temperature thermography results recorded on two separate occasions, Oct'ober 25, 2013 and February 29, 2016. Subsequent review of the thermography data resulted in the overload relay and the associated SSW Pump being declared inoperable. The relay was replaced on March 5, 2016 and the SSW Pump B was restored to operable status. LER 2016-004-00 was written to addres.s SSW Pump B past operability and.the associated impact on TS compliance as it relates to maintaining two redundant SSW sub-systems operable. | ||
Entergy Nuclear Operations, Inc. | |||
The relay was subjected to post service testing to assess the capability of the relay to operate properly when subjected to test conditions that exceeded the recorded thermography temperatures taken in October 2013 and February 2016. In addition, simulated degraded voltage conditions were imposed in the form of high amperage. | Entergy Nuclear Operations, Inc. Letter No. 2.16.057 Pilgrim Nuclear Power Station Page 2 of 2 After the overload relay was replaced, the relay that was removed was inspected and taken for offsite equipment testing. A relay test plan was developed. The relay was subjected to post service testing to assess the capability of the relay to operate properly when subjected to test conditions that exceeded the recorded thermography temperatures taken in October 2013 and February 2016. In addition, simulated degraded voltage conditions were imposed in the form of high amperage. The test results concluded that the relay functioned properly. | ||
The test results concluded that the relay functioned properly. | Based on testing performed, it is reasonable to conclude that the relay and the associated SSW pump were operable during the time period between October 25, 2013 and March 5, 2016. | ||
Based on testing performed, it is reasonable to conclude that the relay and the associated SSW pump were operable during the time period between October 25, 2013 and March 5, 2016. Therefore, based upon this new evidence, PNPS is retracting (formally withdrawing) | Therefore, based upon this new evidence, PNPS is retracting (formally withdrawing) LER 2016-004-00. | ||
LER 2016-004-00. Should you have any questions or require additional information, contact me at (508) 830-8323. | Should you have any questions or require additional information, contact me at (508) 830-8323. | ||
There are no new regulatory commitments contained in this letter. Sincerely, Everett P. Perkins, Jr. Manager, Regulatory Assuranc EPP/fxm cc: Mr. Daniel H. Dorman Regional Administrator, Region I U.S. Nuclear Regulatory Commission 2100 Renaissance Blvd., Suite 100 King of Prussia, PA 19406-2713 Ms. Booma Venkataraman, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-8C2A Washington, DC 20555 NRC Senior Resident Inspector Pilgrim Nuclear Power Station}} | There are no new regulatory commitments contained in this letter. | ||
Sincerely, | |||
~9~ | |||
Everett P. Perkins, Jr. | |||
Manager, Regulatory Assuranc EPP/fxm cc: Mr. Daniel H. Dorman Regional Administrator, Region I U.S. Nuclear Regulatory Commission 2100 Renaissance Blvd., Suite 100 King of Prussia, PA 19406-2713 Ms. Booma Venkataraman, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-8C2A Washington, DC 20555 NRC Senior Resident Inspector Pilgrim Nuclear Power Station}} | |||
Latest revision as of 15:02, 30 October 2019
| ML16260A397 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 09/09/2016 |
| From: | Perkins E Entergy Nuclear Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 16-004-00 | |
| Download: ML16260A397 (2) | |
Text
- ~Entergx Entergy Nuclear Operations, Inc.
Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth. MA 02360 September 9, 2016 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001
SUBJECT:
Retraction of Licensee Event Report No. 2016-004-00, Salt Service Water Pump B Past Operability- Operation or Condition Prohibited by Technical Specifications Pilgrim Nuclear Power Station Docket No. 50-293 Renewed License No. DPR-35
REFERENCES:
- 1. Letter from E.P. Perkins (Entergy Pilgrim) to U.S. Nuclear Regulatory Commission (USNRC), Licensee Event Report No. 2016-004-00: Salt Service Water Pump B Past Operability- Operation or Condition Prohibited by Technical Specifications, dated July 11, 2016 (ADAMS Accession No. ML16202A053, Pilgrim Letter 2.16.038)
LETTER NUMBER: 2.16.057
Dear Sir or Madam:
In accordance with NU REG 1022, Revision 3, Section 5.1.2, Pilgrim Nuclear Power Station (PNPS) is retracting (formally withdrawing) Licensee Event Report (LER) No. 2016-004-00 (Reference 1).
LER 2016-004-00 was submitted to the Nuclear Regulatory Commission (NRC) via PNPS Letter 2.16.038, dated July 11, 2016. The LER reported, pursuant to 10 CFR 50. 73(a)(2)(i)(B), a condition prohibited by Technical Specifications (TS). Subsequent to submittal of LER 2016-004-00, Entergy re-evaluated the condition and determined that it no longer constitutes a reportable condition pursuant to 10 CFR 50.73 and NUREG-1022 guidance.
On May 10, 2016, PNPS identified a condition where the past operability of Salt Service Water (SSW) Pump B power supply breaker overload relay could not be determined due to high temperature thermography results recorded on two separate occasions, Oct'ober 25, 2013 and February 29, 2016. Subsequent review of the thermography data resulted in the overload relay and the associated SSW Pump being declared inoperable. The relay was replaced on March 5, 2016 and the SSW Pump B was restored to operable status. LER 2016-004-00 was written to addres.s SSW Pump B past operability and.the associated impact on TS compliance as it relates to maintaining two redundant SSW sub-systems operable.
Entergy Nuclear Operations, Inc. Letter No. 2.16.057 Pilgrim Nuclear Power Station Page 2 of 2 After the overload relay was replaced, the relay that was removed was inspected and taken for offsite equipment testing. A relay test plan was developed. The relay was subjected to post service testing to assess the capability of the relay to operate properly when subjected to test conditions that exceeded the recorded thermography temperatures taken in October 2013 and February 2016. In addition, simulated degraded voltage conditions were imposed in the form of high amperage. The test results concluded that the relay functioned properly.
Based on testing performed, it is reasonable to conclude that the relay and the associated SSW pump were operable during the time period between October 25, 2013 and March 5, 2016.
Therefore, based upon this new evidence, PNPS is retracting (formally withdrawing) LER 2016-004-00.
Should you have any questions or require additional information, contact me at (508) 830-8323.
There are no new regulatory commitments contained in this letter.
Sincerely,
~9~
Everett P. Perkins, Jr.
Manager, Regulatory Assuranc EPP/fxm cc: Mr. Daniel H. Dorman Regional Administrator, Region I U.S. Nuclear Regulatory Commission 2100 Renaissance Blvd., Suite 100 King of Prussia, PA 19406-2713 Ms. Booma Venkataraman, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-8C2A Washington, DC 20555 NRC Senior Resident Inspector Pilgrim Nuclear Power Station