NLS2019005, Inservice Inspection OAR-1 Owner'S Activity Report

Inservice Inspection OAR-1 Owner'S Activity Report

ML19057A137
Person / Time
Site:	Cooper
Issue date:	02/14/2019
From:	Shaw J Nebraska Public Power District (NPPD)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NLS2019005
Download: ML19057A137 (7)

Text

H Nebraska Public Power District Always there when you need us NLS2019005 February 14, 2019 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001

Subject:

Inservice Inspection OAR-1 Owner's Activity Report Cooper Nuclear Station, Docket No. 50-298, DPR-46

Dear Sir or Madam:

The purpose of this letter is to provide to the Nuclear Regulatory Commission the Inservice Inspection OAR-I Owner's Activity Report for the Fall 2018 Refueling Outage at Cooper Nuclear Station (CNS). This report is submitted in accordance with the requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, Code Case N-532-5. The enclosure contains the completed OAR-1 Owner's Activity Report form, a table identifying the description of items with flaws or relevant conditions that required evaluation for continued service, and a table providing an abstract of repair/replacement activities required for continued servfoe.

This letter does not contain commitments. Should you have any questions regarding this matter, please contact me at (402) 825-2788.

Sincerely, Licensing Manager

/bk

Enclosure:

OAR-1 Owner's Activity Report cc: Regional Administrator w/enclosure Cooper Project Manager w/enclosure USNRC - Region IV USNRC - NRR Plant Licensing Branch IV Senior Resident Inspector w/enclosure NPG Distribution w/o enclosure USNRC-CNS CNS Records w/enclosure

~OOPER NUCLEAR STATION P.O. Box 98/ Brownville, NE 68321-0098 Telephone: (402) 825-3811 / Fax: (402) 825-5211 www.nppd.com

NLS2019005 Enclosure Page 1 of 6 Enclosure OAR-1 Owner's Activity Report

NLS2019005 Enclosure Page2 of6 FORM OAR-1 OWNER'S ACTIVITY REPORT Report Number _R_E_3_0_-_1_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

Plant Cooper Nuclear Station, P.O. Box 98, 72676 648A Ave, Brownville, NE 68321 Unit No. Commercial Service Date 7/1/1974 Refueling Outage No. _R_E_3_0_ _ __

(W applicable)

Current Inspection Interval 5th Interval (Class 1, 2, 3); 3rd Interval (Class MC)

(1st. 2nd, 3rd, 4th, other)

Current Inspection Period 1st Period (Class 1, 2, 3, MC)

(1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the inspection plans 2007 Edition, 2008 Addenda Date and Revision of inspection plans 1/24/19, Revision 2 (Class 1, 2, 3 combined)

Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans Same Code Cases used for inspection and evaluation: N-513-4 Approved per Relief Request RR5-03, N-532-5 (If applicable, including cases modified by Case N-532 and later revisions)

CERTIFICATE OF CONFORMANCE I certify that (a) the statements made in this report are correct; (b) the examinations and tests meet the Inspection Plan as required by the ASME Code,Section XI; and (c) the repair/replacement activities and evaluations supporting the completion of RE30 conform to the requirements of Section XI. (Refueling Outage Number) 0,µ~ Signed Ste~son-Acting Engineering Programs & Components Manager Date 2/8/2019 Owner or Owne(s Designee, nu.e ----------------

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and employed by The Hartford Steam Boiler Inspection and Insurance Company of Hartford, Connecticut have inspected the items described in this Owner's ActivityReport, and state that, to the best of my knowledge and belief, the Owner has performed all activities represented performed all activities represented by this report in accordance with the requirements of Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the repair/replacement activities and evaluation described in this report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or loss of any kind arising from or connected with this inspection.

Scott Masca NB# 14725, Endorsements C, I, N, R (National BoardNumber and Endorsement)

Date (N-532-5)

NLS2019005 Enclosure Page 3 of 6 COOPER NUCLEAR STATION TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Item Description Category and Evaluation Description Item Number On 9/12/18, a localized area of wall thinning below the The pipe section was evaluated by the application of Code Case N-513-design minimum wall thickness was identified on eighteen 4 as approved per Relief Request RR5-03 to allow continued operation D-B, D2.10 (18) inch diameter Service Water piping section SW-E until it could be repaired in refueling outage RE30.

2851-3. The condition was entered into the station corrective action program per CR-CNS-2018-05403.

On 9/14/18, a localized area of wall thinning below the The pipe section was evaluated by the application of Code Case N-513-design minimum wall thickness was identified on eighteen 4 as approved per Relief Request RR5-03 to allow continued operation D-B, D2.10 (18) inch diameter Service Water piping section SW-E until it could be repaired in refueling outage RE30.

2851-3. The condition was entered into the station corrective action program per CR-CNS-2018-05439.

On 9/17 /18, a localized area of wall thinning below the The pipe section was evaluated by the application of Code Case N-513-design minimum wall thickness was identified on eighteen 4 as approved per Relief Request RR5-03 to allow continued operation D-B, D2.10 (18) inch diameter Service Water piping section SW-E until it could be repaired in refueling outage RE30.

2851-7. The condition was entered into the station corrective action program per CR-CNS-2018-05470.

On 9/27/18, a localized area of wall thinning below the The pipe section was evaluated by the application of Code Case N-513-design minimum wall thickness was ioentified on eighteen 4 as approved per Relief Request RR5-03 to allow continued operation D-B, D2.10 (18) inch diameter Service Water piping section SW-P-8A- until it could be repaired in refueling outage RE30.

2851-3. The condition was entered into the station corrective action program per CR-CNS-2018-05663.

On 9/28/18, localized areas of wall thinning below the The pipe section was evaluated to allow continued operation until it design minimum wall thickness were identified on eighteen could be repaired in refueling outage RE30.

D-B, D2.10 (18) inch diameter Service Water piping section SW-P-4A-2851-3. The condition was entered into the station corrective action program per CR-CNS-2018-05684.

NLS2019005 Enclosure Page4 of6 COOPER NUCLEAR STATION TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Item Description Category and Evaluation Description Item Number On 9/28/18, localized areas of wall thinning below the The pipe section was evaluated to allow continued operation until it design minimum wall thickness were identified on eighteen could be repaired in refueling outage RE30.

D-B, 02.10 (18) inch diameter Service Water piping section SW-P-3A-2851-3. The condition was entered into the station corrective action program per CR-CNS-2018-05691.

On 9/29/18, localized areas of wall thinning below the The pipe section was evaluated to allow continued operation until it design minimum wall thickness were identified on eighteen could be repaired in refueling outage RE30.

D-B, 02.10 (18) inch diameter Service Water piping section SW-ZS-2851-7. The condition was entered into the station corrective action program per CR-CNS-2018-05713.

On 9/29/18, localized areas of wall thinning below the The pipe section was evaluated to allow continued operation until it design minimum wall thickness were identified on eighteen could be repaired in refueling outage RE30.

D-B, 02.10 (18) inch diameter Service Water piping section SW-Z6-2851-7. The condition was entered into the station corrective action program per CR-CNS-2018-05716.

On 10/7/18,* a localized area of wall thinning below the The pipe section was evaluated to allow continued operation until it design minimum wall thickness was identified Jon eighteen could be repaired in refueling outage RE30.

D-B, 02.10 (18) inch diameter Service Water piping section SW-P-3C-2851-3. The condition was entered into-the station corrective action program per CR-CNS-2018-06138.

On 10/7/18, a localized area of wall thinning below the The pipe section was evaluated to allow continued operation until it design minimum wall thickness was identified on eighteen could be repaired in refueling outage RE30.

D-B, 02.10 (18) inch diameter Service Water piping section SW-Z12-285F7. The condition was entered into the station corrective action program per CR-CNS-2018-06140. .

NLS2019005 Enclosure Page 5 of6 COOPER NUCLEAR STATION TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Repair/

Date Code Class Item Description Description of Work Replacement Completed Plan Number Localized wall thinning identified in pipe section Pipe below Min-Wall. Replaced section of 3 SW-E-11-2852-8 was replaced in Cycle 30. This Service Water pipe in Cycle 30 per Work Order 12/18/16 16-045R3 condition was identified in CR-CNS-2016-08783. 5148640.

Localized wall thinning identified in pipe section Pipe was below Min-Wall. Repaired section of SW-E-9-2851-3 downstream of support SW-H-58 Service Water pipe per Work Order 5166222.

3 12/16/16 16-047 was repaired in Cycle 30. Condition identified in CR-CNS-2016-08790.

Service water pump C (SW-P-C) sent to Repaired the pump columns and discharge 3 manufacturer for restoration. Sections of pump head by weld build up per PO# 4500189099 3/30/17 15-052R2 columns and discharge head were thinned. and reinstalled per Work Order 5061142.

Localized wall thinning identified by CR-CNS- Pipe below Min-Wall. Replaced section of

- - -- 3 2018-01415 and CR-CNS-2018-01416 in pipe Service Water pipe per Work Order 5235199.

3/15/18 18-016 section SW-E-4-2851-3 downstream of SW-H-52 was repaired in Cycle 30.

As identified in Table 1, the localized wall Pipe was below Min-Wall. Replaced section of 3 thinning identified in pipe section SW-E thinned pipe per Work Order 5265739. 10/18/18 18-039 2851-3 was replaced in RE-30.

As identified in Table 1, the localized wall Pipe was below Min-Wall. Repaired thin 3 thinning identified in pipe section SW-E-8-2851- section of pipe per Work Order 5266082. 10/18/18 18-040 3 was repaired in RE30.

As identified in Table 1, the localized wall Pipe was below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-E-7-2851- Service Water pipe per Work Order 5266083. 10/18/18 18-041 7 was repaired in RE30.

As identified in Table 1, the localized wall Pipe below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-P-3A- Service Water pipe per Work Order 5267092. 10/18/18 18-044 2851-3 was repaired in RE30.

NLS2019005 Enclosure Page 6 of6 COOPER NUCLEAR STATION TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Repair/

Code Class Date Item Description Description of Work Replacement Completed Plan Number As identified in Table 1, the localized wall Pipe below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-P-4A- Service Water pipe per Work Order 5267091. 10/18/18 18-045 2851-3 was repaired in RE30.

As identified in Table 1, the localized wall Pipe below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-P-8A- Service Water pipe per Work Order 5267011. 10/18/18 18-046 2851-3 was repaired in RE30.

As identified in Table 1, the localized wall Pipe below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-28-2851-7 Service Water pipe per Work Order 5267093. 10/18/18 18-047 was repaired in RE30.

As identified in Table 1, the localized wall Pipe below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-26-2851-7 Service Water pipe per Work Order 5267094. 10/18/18 18-048 was repaired in RE30.

As identified in Table 1, the localized wall Pipe below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-212-2851- Service Water pipe per Work Order 5268304. 10/18/18 18-050 7 was repaired in RE30.

As identified in Table 1, the localized wall Pipe below Min-Wall. Repaired section of 3 thinning identified in pipe section SW-P-3C- Service Water pipe per Work Order 5268305. 10/18/18 18-051 2851-3 was repaired in RE30.

Cracked welds found on support RF-H71 were Hanger was welded per work order 5267634.

1 10/28/18 18-057 repaired in RE30.