ML17117A655

E-Mailed Request for Information Dated 04/13/17 for Braidwood Station, Unit 2, Inservice Inspection (Msh)

ML17117A655
Person / Time
Site:	Braidwood
Issue date:	04/13/2017
From:	NRC/RGN-III/DRMA, Division of Reactor Safety III
To:	Exelon Generation Co
References
Download: ML17117A655 (2)

Text

Part B Items (Onsite) - NRC information Requests (4-13-2017) - ISI Braidwood U2

1) ITEM B.1 of NRC information request letter- Welds Selected for review A. The following Code Class welds completed during prior outage.

Work Order Code Class Description 01792632-01 1 Replace 2D SG Bowl Drain (EC399764) 01735138-01 1 Replace existing valve per EC 401903 B. The following Code Class welding scheduled to occur during current outage.

Work Plan Code Class Description 1743228 2 MVR- 2RY063 - Replace Vlv

2) ITEM B.2 of NRC information request letter- ISI related corrective actions AR/IR Number Description/Topic 02683968 A2R17 SECT. XI R/R INITIAL REVIEW MISSED/FINAL REVIEW LATE 02684644 ADDITIONAL DEGRADATION OF UNIT 2 CONTAINMENT DOME COATING 03960141 A2R19 FAC COMP 2FW138; CNTGNCY WO REQ. PER OU-AA-101-1002 03961876 WO 1840184-01 DOCUMENTATION INCOMPLETE 03992319 TENDON D5-12 GREASE MOISTURE CONTENT ACC. CRITERIA EXCEEDED 03976217 UNABLE TO FLUSH 2B SX OIL COOLER INLET PIPING - 2SXA8AB 03977635 VENDOR DOCUMENTATION FOR RCP FLYWHEEL EXAM INCOMPLETE 02614345 BOLTING FOR 2CV8123 RELIEF VALVE NOT REPLACED IN A2R18 02688273 REVIEW BYRON ROOT CAUSE FOR ACTIONS AT BRAIDWOOD 02728481 A1R19: 1CV01SB VT-2 INCORRECTLY CANCELLED, VT-2 IS REQUIRED 02723079 LOSS OF FME INTEGRITY DURING SG INSPECTION - 1RC01BD ADAMS Accession Number ML17117A655

3) Item B.3- Relevant Indications Component AR No. Supporting docs SG-B Channel Head Copy of 02571559 with all CAs and Nondestructive Exam report(s) and (2RC01BB) associated vendor non-conformance completed corrective actions for AR and site reports procedure with acceptance criteria that were applied for this issue.

Containment Surfaces Copy of ARs and CAs associated with Nondestructive Exam report(s) and Requiring Augmented this issue that document the locations completed corrective actions for AR and site Examination) in the Unit 2 of the areas subject to thinning as procedure with acceptance criteria that were containment liner. evaluated and monitored under EC applied for this issue.

398857. Copy of Engineering evaluation (EC 398857) from A2R17 that provides justification for the acceptability of the liner plate at its thinnest location (4/64") and operation of Unit 2 until A2R19, without additional repair or replacement activities on the containment liner plate.

ADAMS Accession Number ML17117A655