ML23160A003

Inservice Inspection Report

ML23160A003
Person / Time
Site:	Calvert Cliffs
Issue date:	06/09/2023
From:	Laura Smith Constellation Energy Generation
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
Download: ML23160A003 (1)

Text

Larry D. Smith Constellation* Manager-Regulatory Assurance Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657 410 495 5219 Office www.exeloncorp.com larry.smith2@constellat,on.com June 9, 2023 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Calvert Cliffs Nuclear Power Plant, Unit No. 2 Renewed Facility Operating License No. DPR-69 NRG Docket No. 50-318

Subject:

lnservice Inspection Report

Reference:

1. American Society of Mechanical Engineers, Boiler & Pressure Vessel Code,Section XI, Article IWA-6000

2. ASME Section XI, Code Case N-532-5, Repair/Replacement Activity Documentation Requirements and lnservice Inspection Summary Report Preparation and Submission.

Pursuant to References 1 and 2, please find enclosed the Owner's Activity Report (Form OAR-1) for the Calvert Cliffs Nuclear Power Plant Unit 2 Spring 2023 refueling outage.

There are no regulatory commitments contained in this letter.

Should you have questions regarding this matter, please contact Mr. Larry D. Smith at (410) 495-5219.

Respectfully,

~s~~~~

Manager - Regulatory Assurance LDS/aj

Enclosure:

(1) 2023 Owner's Activity Report for CC2R25 cc: (Without Enclosure)

NRG Project Manager, Calvert Cliffs NRC Resident Inspector, Calvert Cliffs NRC Regional Administrator, Region I S. Seaman, MD-DNR

ENCLOSURE (1) 2023 OWNER'S ACTIVITY REPORT FOR CC2R25 Calvert Cliffs Nuclear Power Plant June 9, 2023

N-532-5 FORM OAR-1 OWNER'S ACTIVITY REPORT Report Number

......CC2R25 Plant Calvert Cliffs Nuclear Power Plant - 1650 Calvert Cliffs Parkway Lusby, MD 20657 Unit No. 2 Commercial Service Date May 8, 1975 Refueling Outage Number ---=C-=Cc.=2::...;R2=5_ _

(if applicable)

Current Inspection Interval ISI = Fifth Inspection Interval / CISI = Third Inspection Interval (1 st, 2nd, 3"', 4"', other)

Current Inspection Period _S_ec_o_n_d_I_n_sp.._e_ct_i_on__P_e_rio_d__,_{I_S_I_a_nd_C_o_nta_in_m_e_n..,.t,...I,...SI,,..)""""'="-:-:-----------------

(1 ", 2nd, 3"' )

Edition and Addenda of Section XI applicable to the Inspection Plans ASME Section XI 2013 Edition Date and Revision of Inspection Plans ER-CA-330-1001, Rev 5 (2/25/2023), Rev 4 (8/15/2022), Rev. 3 (1/5/2022), Rev. 2 (12/17/2020)

Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans Same as above Code Cases used: N-Sl3-4, N-532-5, N-639, N-716-1 1 N-722-1, N-733, N-729-6, N-770-5, N-823-1, N-864, N-885 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 CC2R25 conform to the requirements of Section XI (refueling outage number)

Signed C,(~ Travis Lefton, ISi Program Owner (Owner or Owner's designee. Title)

Date 6/8/2023 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 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 acti

• ies and evaluation described in this report. Furthermore, neither the Inspector nor his employer shall be liable in any manner i any pe ry or property damage or a loss of any kind arising from or connected with this inspection.

Commissions NB 15722 AI N I R (National Board Number and Endorsement)

Date 06/08/2023 Page 1 of 4

N-532-5 TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Examination Item Item Description Evaluation Description Cateaorv Number The 45th IWL Visual Inspection identified:

• grease leakage at tendon caps L1.10 IWL Concrete and

• minor corrosion at tendon anchorages L-A L 1.11 Tendon Anchorage

• Concrete patch pop outs All identified issued were evaluated as L2.30 Examination acceptable by the Responsible Engineer.

Recommended repairs will be completed prior to the next IWL Visual Inspection in 2027.

Structural integrity evaluation of through wall D-B D2.10 N-513-4 Evaluation leak on 2-LJ1-2051 (ECP-23-000171)

Structural integrity evaluation of through wall D-B D2.10 N-513-4 Evaluation leak on 2-LJ1-2052 (ECP-22-000363)

Replaced Pressurizer CA10514 documents that the G1 welded plug G 1 heater sleeve with repair meets all ASME 111, Class 1 requirements welded plug due to for the end of life.

leakage identified during AUG N-722 VT-2 examination performed in accordance with N-722-1 during 2021 RFO.

20230227_04557632_CAL_A2_RVH Indications evaluation of reactor vessel head penetration 22 B-E B4.30 Reactor Vessel Head and 70 based on bare metal visual examination results. Condition acceptable as is, no evidence of base material wastai:ie observed 20230302_04557464_CAL_A3_2PUMPRC22A Seal Bolting evaluation due to presence of boric B-G-1 B6.18 RCP 22A acid residue. Condition acceptable as is, no evidence of base material wastage observed 20230302_04557470_CAL_A3_2PUMPRC22B Seal Bolting evaluation due to presence of boric B-G-1 BG.18 RCP 22B acid residue. Condition acceptable as is, no evidence of base material wastaoe observed 20230302_04557468_CAL_A3_2PUMPRC21B Seal Bolting evaluation due to presence of boric B-G-1 BG.18 RCP 21B acid residue . Condition acceptable as is, no evidence of base material wastage observed 20230301_04557268_CAL_A3_2ERV404 VALVE evaluation of bolting due to presence of B-G-2 B7.60 2ERV404 boric acid residue. Condition acceptable as is, no evidence of base material wastaoe observed.

Page 2 of 4

N-532-5 20230226_04557411_CAL_A3_2MOV634 VALVE evaluation of bolting due to presence of B-G-2 B7.70 2MOV634 boric acid residue. Condition acceptable as is, no evidence of base material wastage observed.

20230312_04557408_CAL_A3_2CKVSl-138 VALVE evaluation of bolting due to presence of B-G-2 B7.70 2CKVSl-138 boric acid residue. Condition acceptable as is, no evidence of base material wastaae observed.

20230303_ 04556195_ CAL_A3_M NSA B006-03 VALVE evaluation of bolting due to presence of AUG N-733 MNSA B006-03 boric acid residue. Condition acceptable as is, no evidence of base material wastaae observed.

Page 3 of4

N-532-5 TABLE2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description Date Repair/Replacement Class DescriDtlon Of Work Com Dieted Plan Number Replace Grafoil seal for leaking Mechanical MNSA. Replacement complete SAT.

1 Nozzle Seal No identified leakage after seal 3/11/2023 2023-2-002 Assembly {MNSA) replacement.

Replace RV with Spare. Traceability 1 Relief Valve of RV could not be verified. 3/1/2023 2022-2-006 Reference IR 04681715 Replace CV with spare. Traceability 2/28/2023 2022-2-030 2 Control Valve of CV could not be verified. 8/22/2022 2022-2-043 Reference issue IR 04681712 Repair leak: Fabrication and 1/17/2023 2022-2-057 3 Spool Piece installation of 2-LJ1-2052 stainless 2/28/2023 2022-2-068 spool Repair leak: Fabrication and 3 Spool Piece 2/28/2023 2022-2-066 Installation of 2-LJ1-2051 Spool Page 4 of 4