ML21189A026

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Fifth Inservice Inspection Interval, First Inservice Inspection Period 2021 Owner'S Activity Report for RFO-26 Inservice Examinations
ML21189A026
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 06/28/2021
From: Rocks J, Sterio A
Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
NMP1 L3406
Download: ML21189A026 (11)
v • d • e


Text

~,,,§? Exelon Generation 10 CFR 50.55a NMP1 L3406 June 28, 2021 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Nine Mile Point Nuclear Station, Unit 1 Renewed Facility Operating License No. DPR-63 Docket No. 50-220

Subject:

Fifth lnservice Inspection Interval, First lnservice Inspection Period 2021 Owner's Activity Report for RFO-26 lnservice Examinations Pursuant to 10 CFR 50.55a, Nine Mile Point Nuclear Station, LLC (NMPNS) hereby submits the attached Fifth lnservice Inspection Interval, First lnservice Inspection Period, 2021 Owner's Activity Report for RFO-26 lnservice Examinations, for Nine Mile Point Unit 1 (NMP1).

This activity report meets the requirements of the American Society of Mechanical Engineers (ASME), Code Case N-532-5, "Alternative Requirements to Repair and Replacement Documentation Requirements and lnservice Summary Report Preparation and Submission as Required by IWA-4000 and IWA-6000,Section XI, Division 1," as approved for use by Regulatory Guide 1.147, "lnservice Inspection Code Case Acceptability, ASME Section XI, Division 1."

There are no regulatory commitments contained in this letter.

Should you have any questions regarding the information in this submittal, please contact Brandon Shultz, Mgr. Site Regulatory Assurance at (315) 349-7012.

Sincerely,

[:\Digitally signed by Rocks, Joshua F Roe-ks 1 JOs h U a 17...:sate: 2021.06.30 08:07:04 -04'00' Joshua Rocks for Alexander D. Sterio Engineering Director, Nine Mile Point Nuclear Station Exelon Generation Company, LLC ADS/BKS

Attachment:

Fifth lnservice Inspection Interval, First lnservice Inspection Period 2021 Owner's Activity Report for RFO-26 lnservice Examinations cc: Regional Administrator, Region I, USNRC Project Manager, USNRC Resident Inspector, USNRC

Attachment Fifth lnservice Inspection Interval, First lnservice Inspection Period 2021 Owner's Activity Report for RFO-26 lnservice Examinations

............ Exelon

~**,

Generation.

FIFTH INSERVICE. fNSPECTION INTERVAL FIRST INSERVICE INSPECTION PERIOD 2021 OWNER'S ACTIVITY REPORT FOR RFO-26 INSERVICE EXAMINATIONS Prepared For Nine Mile Point Nuclear*Station Unit 1 P.O. Box 63, Lake Road Lycoming, New York 13093

  • Commercial Service Date: December 01, 1969 NRC Docket Number: 50-220 Document Number: NMP1-0AR-00o-026 Revision Number: 00 Date: June 21*t, 2021

Nine Mile Point Nuclear Station Unit 1 NMP1-OAR-005-26

,,:,, Exelon Generation

. FIFTH INSERVICE INSPECTION INTERVAL 2021 OWNER'S ACTIVITY REPORT FOR Rev . 00 Date: June 21st, 2021 INSERVICE EXAMINATIONS Page 2 of 9 TABLE OF CONTENTS Table of Contents ................................................................................................................................................ 2 Record of Revision ...............................................................................................................................................3 Abstract ..........................................................................................................................................-...................... 4 Form OAR-1 Owner's Activity Report for ASME Section XI Inspection & Testing Plans .................................. 6 Table 1 Items with Flaws or Relevant Conditions that Required Evaluation for Continued Service .................. 7 Table 2 Abstract of Repairs, Replacements, or Corrective Measures Required for Continued Service ............ 8

I Nine Mile Point Nuclear Station Unit 1 NMP1-OAR-005-26 FIFTH INSERVICE INSPECTION INTERVAL Rev. 00

,::, Exelon 2021 OWNER'S ACTIVITY REPORT Generation. FOR Date: June 21 5 \ 2021 INSERVICE EXAMINATIONS Page 3 of 9 00 June 17th , 2021 Entire

  • Initial issue of Owner's Activity Report for ASME Document Section XI lnservice Inspection, Containment lnservice Examinations, Pressure Tests and Alternate Risk-Informed Inspection in accordance

. with the requirements of ASME Code Case N-532-5.

Nine Mile Point Nuclear Station Unit 1 NMP1-OAR-005-26

..,,,..,. FIFTH INSERVICE INSPECTION INTERVAL Rev. 00

~ Exelon 2021 OWNER'S ACTIVITY REPORT Generation, FOR Date: June 21 st, 2021 INSERVICE EXAMINATIONS Page 4 of 9 ABSTRACT ASME Section XI Code Case N-532-5 requires submission of the Owner's Activity Report to the regulatory and enforcement authorities having jurisdiction at the plant site within 90 calendar days of the completion of each refueling outage.

This Owner's Activity Report summarizes the results of the Nine Mile Point Nuclear Station (NMPNS), Unit 1, American Society of Mechanical Engineers (ASME)Section XI In-service Inspection, Risk-Informed Inspection, Containment In-service Examinations, and Pressure Tests performed during Refueling Outage Twenty-Six (RFO-26), from March 22, 2021 through April 11, 2021, and the first outage of the 1st In-service Inspection Period that started on August 23, 2019 and is currently scheduled to end on August 22, 2022.

The attached Table 1 and 2 include flaws and conditions (those meeting the requirements of Code Case N-532-

5) identified since the last Owner's Activity Report following Refueling Outage RFO-25.

As an alternate to the requirements of the ASME, Boiler and Pressure Vessel Code (B&PVC),Section XI, Article IWA-6000, NMPNS is implementing ASME Code Case N-532-5, Alternative Requirements to Repair and Replacement Documentation Requirements and In-service Summary Report Preparation and Submission as Required by IWA-4000 and IWA-6000,Section XI, Division 1". Regulatory Guide 1.147, Revision 18, approved ASME Code Case N-532-5 for use. This Report complies with the requirements of Code Case N-532-5 and the conditions identified in RG 1.147.

OWNER'S ACTIVITY REPORTS - FORM OAR-1 Owner's Activity Reports Form OAR-1 's were prepared and certified upon completion of the Nine Mile Point Unit 1, 2021 refueling outage (RFO-26) examination activity in accordance with the following NMPNS inspection plans and schedules:

  • ER-NM-330-1001, Fifth Ten-Year In-service Inspection Plan and Implementing Schedule, [includes the Alternate Risk-Informed Inspection Program, Pressure Testing (PT) Program, and Containment (CISI) lnservice Inspection Program]

In addition to the Owner's Activity Report, Form OAR-1, the following Tables are also included:

a. Items with Flaws or Relevant Conditions that Require Evaluation for Continued Service, Table 1, provides a listing of item(s) with flaws or relevant conditions that required evaluation to determine acceptability for continued service, whether or not the flaw or relevant condition was discovered during a scheduled examination or test, and provides such information as Examination Category, Examination Item Number, Item Description, Flaw Characterization (as required by IWA-3300).
b. Abstract of Repairs, Replacements or Corrective Measures Required for Continued Service, Table 2, identifies those items containing flaws or relevant conditions that exceeded Division 1 acceptance criteria shall be provided with the information and format of Table 2. This information is required even if the discovery of the flaw or relevant condition that necessitated the repair/replacement activity did not result from an examination or test required by Division 1. If the acceptance criterion for a particular item is not specified in Division 1, the provisions of IWA-3100(b) shall be used to determine which repair/replacement activities are required to be included in the abstract.

Nine Mile Point Nuclear Station Unit 1 NMP1-OAR-005-26 FIFTH INSERVICE INSPECTION INTERVAL Rev. 00

,=, Exelon 2021 OWNER'S ACTIVITY REPORT Generation. FOR Date: June 21 st , 2021 INSERVICE EXAMINATIONS Page 5 of 9 In accordance with ASME Section XI, IWB-2411, IWC-2411, IWD-2411, IWE-2411, and IWF-2410 and with the exception of the examinations that may be deferred until the end of the inspection interval as specified in Table IWB-2500-1; IWC-2500-1, IWD-2500-1, IWF-2500-1 and IWE-2500-1, including those examinations which NMPNS has requested and received approval in the-form of relief request, the required examinations in each examination category have been scheduled in accordance with Tables IWB-2411-1, IWC-2411-1, IWD-2411-1, IWE-2411-1, and IWF-2410-1.

Nine Mile Point Nuclear Station Unit 1 NMP1-OAR-005-26 AIIW' FIFTH INSERVICE INSPECTION INTERVAL Rev. 00

_.. Exelon 2021 OWNER'S ACTIVITY REPORT Generation. FOR Date: June 21 st , 2021 INSERVICE EXAMINATIONS Page 6 of 9 FORM OAR-1 OWNER'S ACTIVITY REPORT As required by the provisions of the ASME Code Case N-532-5 Report Number: NMP1-OAR-005-26 Plant -------~N=in=e~M=ile~P=oi~n~t~N=uc=le=a=r-,;S;c..t=at=io~n~.~P"""."'=O""'.,=;B=ox~63=.'='L='y""c=om~in__q~.~N=ew~Y~o~rk~13~0=9~3'-------

(Name and Address of Plant)

Plant Unit -~1_ _ Commercial Service Date December 01. 1969 Refueling Outage Number RFO-26 Current Inspection Interval 5th Interval for ISi & PT. 3rd Interval for GISI August 23. 2019 to August 22. 2029 (1st. 2nd. 3rd, 4th. Other)

Current Inspection Period First In-service Inspection Period August 23. 2019 to August 22. 2022 (1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the Inspection Plans 2013 Edition. No Addenda Date and Revision of Inspection Plans ER-NM-330-1001. Revision 00. August 23. 2019 {ISi}

Edition and Addenda of ASME Section XI applicable to Repair/Replacement activities, if different than the Inspection Plan NIA {same Code Edition/Addenda)

Code Cases used: ~N~-5~3=2~-~5---------....,,....-....,,--,-,---,----------

{if applicable)

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 RFO-26 conform to the requirements of Section XI.

(refueling outage number) r Signed Zhang, Bryal')t::.":::i~"r~~= Date 6/23/2021 (Programs Manager)

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of NY and employed by The Hartford Steam Boiler Inspection & Insurance Co. of Hartford. CT. have inspected the items described in this Owner's Activity Report and state that to the best of my knowledge and belief, the Owner has 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 a loss of any kind arising from or connected with this inspection.

Powers. .~Di7_i~allysignedby Commissions NY5570 NB 16158A NI R I'1spector's ~~lilq~~~;:;; ~tional Board, State, Province, and Endorsements Branaon 1.,,/

Date u13-03-04*00*

Nine Mile Point Nuclear Station Unit 1 NMP1 -OAR-005-26

.--* FIFTH INSERVICE INSPECTION INTERVAL Rev. 00

,,::, Exelon 2021 OWNER'S ACTIVITY REPORT Generation. FOR Date: June 21st, 2021 INSERVICE EXAMINATIONS Page 7 of 9 TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-5 EXAMINATION ITEM ITEM EVALUATION DESCRIPTION CATEGORY NUMBER DESCRIPTION R-A R1.20 Reactor Vessel Nozzle While performing an Encoded Automated Phased Array on weld N1C Safe End to Elbow 32-WD-085 Nozzle to safe end weld on N1C, two axial indications were recorded with measurable through-wall dimensions. Indication #1 is acceptable, however indication #2 ls unacceptable per table ASME Section XI 2013 Edition Table-3514-1. These flaws are ID connected (inner diameter surface):

These flaws were seen in previously encoded data and were characterized as ID geometry. Since the current technique is far superior (data quality), we can now ascertain a through-wall dimension to generate an a/I (aspect ratio) per the code. The flaws are constrained to the 316NG (Nuclear Grade-Low Carbon) material which is considered sec (stress corrosion cracking) resistant material. These flaws are not service induced. This condition was documented in the site Corrective Action Program (IR#4412326).

R-A R1.20 Reactor Vessel Nozzle While performing an Encoded Automated Ph~sed Array on weld N1 D Nozzle Safe End to 32-WD-125 Nozzle to safe end weld on N1D, thirteen (13) axial Elbow indications were recorded with measurable through-wall dimensions. The results were four (4) acceptable indications and nine (9) unacceptable indications.

Indications #1, '/16, #8, and #11 are acceptable, however indications #2, #3, #4, #5, #7, #9, #10, #12, and #13 are unacceptable per table ASME Section XI 2013 Edition Table-3514-1. All flaws are ID connected (inner diameter surface).

These flaws were seen in previously encoded data and were characterized as ID geometry. Since the current technique is far superior (data quality), we can now ascertain a through-wall dimension to generate an a/I (aspect ratio) per the code. The flaws are constrained to the 316NG (Nuclear Grade-Low Carbon) material which is considered sec (stress corrosion cracking) resistant material. These flaws are not service induced. This condition was documented in the site Corrective Action Program (IR# 04412423).

Nine Mile Point Nuclear Station Unit 1 NMP1-OAR-005-26 FIFTH INSERVICE INSPECTION INTERVAL Rev. 00

,::I::!' Exelon 2021 OWNER'S ACTIVITY REPORT Generation, FOR Date: June 21 st , 2021 INSERVICE EXAMINATIONS Page 8 of 9 TABLE2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-5 CODE CLASS ITEM DESCRIPTION DESCRIPTION OF WORK DATE COMPLETED REPAIR/REPLACEMENT PLAN NUMBER None.

..=-' Exelon Generation.

Nine Mile Point Nuclear Station Unit 1 FIFTH INSERVICE INSPECTION INTERVAL 2021 OWNER'S ACTIVITY REPORT FOR INSERVICE EXAMINATIONS NMP1-OAR-005-26 Rev. 00 Date: June 21 st, 2021 Page 9 of 9 END OF INSERVICE INSPECTION OWNER'S ACTIVITY REPORT FOR REFUELING OUTAGE TWENTY-SIX (RF0-26)

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