BW230054, Attachment 2: MDMP Deviation Form

Attachment 2: MDMP Deviation Form

ML23321A046
Person / Time
Site:	Byron, Braidwood
Issue date:	11/17/2023
From:	Constellation Energy Generation
To:	Office of Nuclear Reactor Regulation
Shared Package
ML23321A043	List: BW230054, Attachment 2: MDMP Deviation Form ML23321A044 ML23321A045
References
BW230054
Download: ML23321A046 (1)

Text

ER-AA-4003 Revision 6 ATTACHMENT 2 MDMP Deviation Form Page 1 of3 Utility: Constellation Energy Generation (CEG). LLC Applicable Site(s) and Unit No.: Byron Units 1 and 2 and Braidwood Unit 2 Utility Contact(s):

Osvaldo Cruz -- Fleet PWR Internals Program Engineer. i Kemper Young -- Fleet PWR Internals Program Engineer.

Issue Program (IP) activity or document:

Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines (AfRP-227, Revision 1-A). EPRI, Palo Alto, CA: 2019. 3002017168.

Scope/ Description of Deviation:

CLG is submitting this NE! 03-08 deviation for Byron Units I and 2 and Braidwood Unit 2 to perfrlrrn the baseline volumetric examinations of Batlle-Fonner Bolts (BFBs) no later than 36 effective full pO\ver years (EFPY). Byron Units l and 2 and Braidwood Unit 2 are scheduled to perform the Reactor Vessel Internals (RVl) examinations in accordance with MRP-227. Revision l -A during the Spring 2026. Fall 2026. and Fall 2027 rci'ueling outages. respectively. These examinations include the volumetric examinations of the BFBs. The.se plants are considered Tier 4 plants per NS;\ L.-16-1. Revision I.

MRP-227. Revision I-A. Table 4-3. Item W6: --Baftlt:-Former Assembly; Baffle-Former Bolts .. requires 1hat Tier 4 plants perform baseline volumetric examinations oC BFBs no iater lhan 35 effective full pmH,r years (EFPY). as stated in l able 4-3. Note 8. Based on the schedule oCthe RV! examim1tions for Byron Units l and 2 and Braicl\\OOcl Unit 2. thCSl' plants will e:sceed the EFPY requirement for performing these baseline exaininations. Per the implementation requirements under Subsection 7.3 of MRP-227. Revision I-A. there is a NE! 03-08 "Needed" requirement which states. **cud1 comnzcrc1ui c*s. Pll'R unit 1/101!

implement the requirements o/Tuh!es 1 through 9 011d Tublr.cs 5-I tlimuglz 5-3for t!ir? upr1lirnh/c design". Per NE! 03-08. '"Needed" requiremems or guidance are --10 he implr.cmemr.cd whcnevi.!r hw ol!ernutirc arc acccptuh!e." Technical justification has been developed under EC 639996 and 640160 to deviate from the "Needed .. requirement above because it .. \1 ill not he implemcntccl 1rithin tlu! 1ime/i*mn1c in MRP-'.:!27. Revision l-A.

Reason for Deviation:

This deviation is being submitted to extend the current requirement of35 EFPY to 36 EFPY to bundle the baseline volumetric examinations or BFBs \vith the rest of the RV! e:saminations to reduce person-rem exposure and outage complexity. The RV! exarninations are being performed during outages with significantly longer durations than normally ~cheduled due to planned main turbine upgrades. These refueling outages are projected lo occur at EFPYs greater than 35 but less than 36. As such. performing the, olumetric examination of BFBs during those outages ,vith longer duration will allow more time to perfrmn any necessary evaluations or repairs on the BFBs. thereby reducing outage extension risks.

this provides site and vendor personnel with more time to complete the inspections, thereby reducing execution risks.

IR Number: 04712854 EC Number: 639996 (Byron) and 640160 (Braidwood)

ER-AA-4003 Revision 6 ATTACHMENT 2 MDMP Deviation Form Page 2 of3 Time Frame the Deviation will be in Effect:

The deviation will be in effect until the completion of the following outages for Byron Units l and 2 and Braidwood Unit 2:

Plant Outage Projected EFPY Byron Unit 1 B 1R27 (Spring 2026) 35.951 Byron Unit 2 B2R26 (Fall 2026) 35.814 Braidwood Unit 2 A2R26 (Fall 2027) 35.775 Deviation to this IP document is classified as: NEEDED 2023.10.31 Prepared By: Osvaldo Cruz _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

08:48:51 -05'00' (s*ign"date)

Young, Kemper Digitally signed by Young, Kemper Joseph Joseph Corporate IP Primary Representative: Kemper Young _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

Date: 2023.10.31 09:51 :38 -04'00' (sign date)

Digitally signed by Murray, MUrray, Pat rl(

• kPatrick Date:2023.10.3113:07:23 Byron and Braidwood Programs Manager: Patnc

• k- M urray _ _ _ _ _ _ _ _ _ _ -05*00*

Asset Management Senior Manager: Gabriel Chavez _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

(sign date)

Coffey La LI re n Date:

1 D1g1tally signed by Coffey, Lauren 2023.11.01 154841 -05'00' Centralized Programs Engineering Director: Lauren Coffey _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

(~ign date)

CLI nzema n, Digitally signed by Cunzeman, Jonathan P.

Jonathan P. Date 2023.110608:5938-06'00' Byron Site Engineering Director: Jonathan Cunzeman _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

(sign/date)

MacArtney, Digitally signed by MacArtney, Steven Braidwood Site Engineering Director: Steven Macartney _S_t_e_v_e_n______D_at_e,_20_2_3.1_1_.06_1_1_,31_,0_8_-0_6'0_0_*

(sign/date)

ER-AA-4003 Revision 6 ATTACHMENT 2 MDMP Deviation Form Page 3 of 3 Byron Site Vice President: Harris Welt We It, Harr*IS Digitally signed by Welt, Harris Date: 2023.11.09 08:05:33

- - - - - - - - - - ---'-~-;----------:-------

-06'00' (sign/du te)

Bra"d woo d s*

ite Vice President: Gregory Gugle Gugle, Greg DigitallysignedbyGugle,Greg Date: 2023.11.09 08:41 :18 _06 ,00 ,

1 (sign date)

Senior VP of Engmeermg

• * & Technical Services** Ma1*k Ne wcorner