ML16267A439

Request for Information Letter 9/23/16 (LAS)

ML16267A439
Person / Time
Site:	Duane Arnold
Issue date:	09/23/2016
From:	Duane Arnold
To:	NRC/RGN-III
References
Download: ML16267A439 (1)

Text

Part B Items (Onsite) - NRC information Requests- ISI Duane Arnold Unit 1

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

Work Order Code Class Description 40210757-07 2 Repair valve disc 40267415-01 2 Modify pipe support 40201184-01 2 Replace valve The following Code Class welding scheduled to occur during current outage.

Work Order Code Class Description 40376987-02 2 Install 4 line RHR 40349041-01 2 Replace valve 40387396-44 2 Hard Vent Line

2) ITEM B.2 of NRC information request letter- ISI related corrective actions AR/IR Number Description/Topic 1998374 Scope expansion per ASME Section XI - HBD-31-H-38 1999542 NRC Identified potential issue with ACP1211.4 PT procedure 1999596 NRC Identified potential issue with ACP1211.3 PT procedure 2001501 ISI of HBD-25-H-7 in pumphouse has loose hanger rod 2001792 MO1040 Valve install problems 2003570 Internal torus catwalk bolting issues 2005428 Uncontrolled weld rod found NOS/QC identified 2005561 CRD 10-19 leaking up 60DPM at each of 5 locations 2020658 Missed surface examination of replaced flange stud 2027076 Inconsistency in EN-AA-203-1001 based on code compliance 2028275 Insufficient gap found on pipe support. NOS/QC identified 2028467 Defect not detected during penetrant exam. Ref. CR#

2028331.

2109198 Unable to locate VT-2 report (NS540001) for WO 4032234 2140025 Unsat PT indications found in welds -QC indent 2142597 NRC identified: perform pre-walkdown of pipe inspections 2147752 Contingent overlay for N10 core DP/SBLC DM weld

3) Item B.3- Relevant Indications Component Exam Report 1998337 Radiography revealed unacceptable indication in W3 2000461 Linear indication found in loopseal weld 2002746 Rejectable indication on disk 2005339 Weld rejection on a discharge weld W.O. 40104995-12 ADAMS Accession Number ML16267A439