ML19192A049

Day Inservice Inspection Report for Interval 4, Period 1, (B2R21)

ML19192A049
Person / Time
Site:	Byron
Issue date:	07/11/2019
From:	Kanavos M Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BYRON 201 9-0064
Download: ML19192A049 (4)

Text

-IE:______ Byron Generating Station Exelon Generat i on 445ONcrthGerrnanChurch Rd vvww.exeloncorpcom July 11, 2019 LTR: BYRON 201 9-0064 FILE: 1.10.0101 (1D.101)

United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Byron Station, Unit 2 Facility Operating License No. NPF-66 NRC Docket No. STN5O-455

SUBJECT:

Byron Station Unit 2 90-Day Inservice Inspection Report for Interval 4, Period 1, (B2R21)

The subject 90-Day Inservice Inspection Report for the Byron Station Unit 2, Refueling Outage Twenty-One (B2R21) is being submitted pursuantto the requirements of Article IWA-6000, Records and Reports of Section XI, Rules for Inservice Inspection of Nuclear Power Plant Components, of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code 2007 Edition I 2008 Addenda.

This letter provides a copy of Form OAR-i Owners Activity Report for inservice inspection activities performed during the previous fuel cycle. This report meets the requirements of the ASME Code Case N-532-5, Repair/Replacement Activity Documentation Requirements and Inservice Summary Report Preparation and Submission. The report covers the inservice inspections conducted prior to and during the Unit 2 Spring 2019 refueling outage.

If there are any questions regarding this matter, please contact Mr. Jon Cunzeman, Regulatory Assurance Manager, at (815) 406-2800.

Respectfully, Mark E. Kanavos Site Vice President Byron Generating Station MEK/RP/ZC/rm Attachment

FORM OAR-i OWNERS ACTIVITY REPORT Report Number B2R21 Plant Byron Generating Station, 4450 North German Church Road, Byron, Illinois 61010 Unit No. 2 Commercial Service Date August 2, 1987 Refueling Outage Number B2R21 (if applicable)

Current Inspection Interval Fourth Inspection Interval (151), Third Inspection Interval (Containment 151)

(ist, 2nd, 3rd, 4th, other)

Current Inspection Period First Inspection Period (151 and Containment 151)

(ist, 2nd, 3rd

)

Edition and Addenda of Section XI applicable to the Inspection Plans ASME Section XI 2007 Edition through 2008 Addenda Date and Revision of Inspection Plans January 4th, 2017 / Rev. 1; August 18th, 2018 / Rev. 2 Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans Same as above Code Cases used: N-432-1, N-508-4, N-513-3, N-513-4, N-532-5, N-586-1, N-597-2, N-639, N-706-1, N-722-1, N-729-4, N-731, N-770-2, N-798, N-800.

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 B2R21 conform to the requirements of Section XI (refueling outage number)

Signed - - - -

Date rf1l4 / 2c, lI (Owner or Owignee. Title)

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 Owners 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.

Commission AJó/I? ,v, /7V.C (Inspectors Signature) .) (National Board Number and Endorsement)

Date

TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Examination Item Category Number Item Description Evaluation Description A through-wall leak on line 2SXL1AA4 in the dissimilar metal JR 04230553 D-B D2.lO weld between the carbon steel EC Eval: 627794 4x42 weld-o-let and 4 stainless steel gate valve 2SX265A A small through wall leak on pipe JR 04170307 D-B D2.lO 2SXE5A-3 in the elbow just EC Eval: 625438 downstream of check valve 2SX 194.

TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description Date Repair/Replacement Class Description Of Work Completed Plan Number Replace piping with through 3 2SXE5A-3 wall leak on elbow downstream 4/26/20 19 WO 04826853-01 of check valve 2SX 194.

Repair leak at toe of the weld 3 2SXO3B-42 between 2SX265A (valve) and 3/22/20 19 WO 04899280-0 1 2SXL 1 AA-4 (Weld-O-Let).

Required adjustment for loose nut on 2RCO IBA-LLR support 1 2RCO I BA-LLR 4/23/2019 WO 04725128-01 identified during Section XI exam (IR 04239442)