ML19018A204
| ML19018A204 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 01/18/2019 |
| From: | Sharp S Northern States Power Company, Minnesota, Xcel Energy |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-Pl-19-004 | |
| Download: ML19018A204 (4) | |
Text
1717 Wakonade Drive Welch, MN 55089 800.895.4999 xcelenergy.com JAN 1 8 2019 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie Island Nuclear Generating Plant Unit 1 Docket No. 50-282 Renewed Facility Operating License No. DRP 42 fl Xcel Energy*
RESPONSIBLE BY NATURE L-Pl-19-004 10 CFR 50-55a lnservice Inspection Summary Report Unit 1, Interval 5, Period 2, Outage 1 Refueling Outage Dates: 9/21/2018 to 10/26/2018 During 2018, Prairie Island Nuclear Generating Plant (PINGP) Unit 1 Refueling Outage, an lnservice Inspection (ISi) examination for the second period of the fifth interval was conducted. Form OAR-1 Owner's Activity Report (Enclosure1) is being submitted for this time period as required by American Society of Mechanical Engineers (ASME)
Code Section XI, in accordance with the provisions of Code Case N-532-5, and is intended to.satisfy the inspection reporting requirements.
The form includes a listing of items with flaws or relevant conditions that required evaluation for continued service (Table 1) and abstract of repair/replacement activities required for continued service (Table 2).
Summary of Commitments This letter contains no new commitments and no revisions to existing commitments.
~"*tsn/1~
Scott Sharp (J
Site Vice President, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota Enclosure cc: Regional Administrator, Region Ill, USNRC Project Manager, Prairie Island, USNRC Resident Inspector, Prairie Island, USNRC State of Minnesota, Department of Commerce
ENCLOSURE FORM OAR-1 OWNER'S ACTIVITY REPORT Prairie Island Nuclear Generating Plant For lnservice Inspection Summary Report Unit 1, Interval 5, Period 2, Outage 1 Refueling Outage Dates: 9/21/2018 to 10/26/2018 2 pages follow
Report Number FORM OAR-1 OWNER'S ACTIVITY REPORT Prairie Island Nuclear Generating Plant As required by the provisions of ASME Code Case N-532-5 1R31 Plant ----'P---'r=a=ir"'"'ie~ls=la=n=d~N...,_u=c=l=ea=r_G=en~e=r~a=tin~g"'--'-P~la=n=t,_. 1-'-7~1'"°'7_W-'--'-"a"-'k=o'-'-na=d=e"--=D.,_.,ri_,_ve=---=E=a=s=t *....,_W--'--"'-el=c'-'-h'""'. M=,in-"-n=e=s=o=ta,_,_ *..::5.z.5=08=-9=------
U nit No. __ 1~---
Commercial service date __
1=2~/1"'"'6=/...,_1=-97'-'3=-----
Refueling outage no. __
1,_,_R-'-'3"--1,..___
Current inspection interval 5th ISi Inspection Interval for class 1. 2. and 3. 3rd !WE Inspection Interval for class MC Current inspection period 2nd ISi Inspection Period for class 1, 2, and 3. 1st IWE Inspection period for class MC Edition and Addenda of Section XI applicable to the inspection plans 2007 Edition - 2008 Addenda for class 1, 2, and 3.
2013 Edition for class MC __ _
Date and revision of inspection plans -----'9-'-/2=7'--'/~1-=-8~R~e~v~. ~s---'i_,_o~r c=l=a=ss~1,_, 2=*~a=n~d~3=*~=9/~1~8~/1~8~R~ev=*~1~0~f=o-'-r~c=la=s=s~M-'-C~_
Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans Same as Inspection Plan for class 1.2. and 3. 2007 Edition - 2008 Addenda for class MC Code Cases used for inspection and evaluation: ---'-N~-_,_53=2=-_,_5,_N~----'7---'1_,_6_-1~N~-7'--'2=9~-_,_4,_N-'---'-7-=-7-=-6,_N~----'7~2=2--1~--
CERTIFICATE OF CONFORMANCE I certify that (a) the statements made in this Owner's Activity 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 refueling outage number 1 R31 conform to the requirements of Section XI.
Signed.7:Jfm~ &,:~
Owner or Owner's oeslgnee,lt ISi Engineer Date II - zo - 2018 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 Connecticut 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 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.
TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Category and Item Description Evaluation Description Item Number 8-P, 815.10 SP 1392 Bolted Connections Borated MV-32230, 1-1/2 cups dry, white/brown Systems Pressure Test packing leak which has accumulated on the bonnet accepted by evaluation QIM 501000017687.
8-P, 815.10 SP 1392 Bolted Connections Borated MV-32231, 1 cup boric acid packing indication Systems Pressure Test which has accumulated on the bonnet and in contact with pressure retaining bolting accepted by evaluation QIM 501000017687.
C-H, C7.10 SP 1392 Bolted Connections Borated MV-32083, 1/4 cup boric acid indication at body Systems Pressure Test to bonnet accepted by evaluation QIM 501000017687.
C-H, C7.10 SP 1168.16 Chemical Volume VC-5-2, 1/4 cup dry, white, packing leak which Control System Pressure Test has come in contact with the bonnet accepted by evaluation QIM 501000019097.
C-H, G?.10 SP 1168.3 RHR Pit Pressure Test RH-1-4, Trace dry white at Body to Bonnet accepted by evaluation QIM 501000017312.
C-H, C7.10 SP 1168.3 RHR Pit Pressure Test RH-2-6, 1/4 cup dry white at Body to Bonnet accepted by evaluation QIM 501000017314.
C-H, C7.10 SP 1168.3 RHR Pit Pressure Test RH-2-5, Trace dry white at Body to Bonnet accepted by evaluation QIM 501000017315.
C-H, C7.10 SP 1168.3 RHR Pit Pressure Test MV-32084, 1/2 cup dry, white/brown packing leak which as accumulated on the bonnet accepted by evaluation QIM 501000017279.
C-H, C7.10 SP 1168.13 Safety Injection System Sl-35-8, White boric acid deposit less than tsp Pressure Test at body to bonnet. 1 tbsp brown/white packing boric acid accepted by evaluation QIM 501000018751.
TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE 3
3-CL-88 Cooling Replaced segment of pipe due to MIC.
3/31/2017 1-30-006 Water Pipe Segment 3
035-051 Air Cooler Performed weld build up restorc~tion of 2/2/2018 1-30-021 sealing surfaces of the Diesel Generator heat exchanger channel heads.
MC 1PENC-Maintenance Weld repair the hinge restrictor stud to the 10/24/2018 1-30-032 MAL Air Lock inner door surface of the Maintenance Air Lock.
3 3-CL-11 CL system Replaced pipe elbow due to MIC. Flange 9/26/2018 1-30-042 piping fasteners were also replaced to aid in segment expediting the repair.
1 134-011 11 Steam Installed several tube plugs due to 10/30/2018 1-30-051 Generator vibrational wear noted during ET.
1 134-012 11 Steam Installed several tube plugs due to 10/30/2018 1-30-052 Generator vibrational wear noted during ET.