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| February 12, 2021
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| 5)RUP2$52ZQHU¶V$FWLYLW\5HSRUW FORM OAR-1 OWNER'S ACTIVITY REPORT st...:.P....:e=r.:.:io=d=*--=2=-n_d..:..R.:.:e""p=o=rt...,)._________________
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| Report Number _ _-=2'--'-5=--.. .:1. . ;-2=.. ., (-=Uc:. n""'it:. . :2=., c. :5=-t_h..:.:ln.:.:t=e.:...rv..,a=l1.,_. :. 1_
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| Plant -----=J=o~se=--p=h~M~*....:F....:a=r~le"""y....;N~u ~cl=e~a~r~P~la=n~t~---------------------
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| Unit No. _ _ ___.2,....__ __ Commercial service date December 01, 1977 Refueling outage no. -=2=R-"2=7"'------
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| (if applicable)
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| Current inspection interval _ _. , 5:.th. _________________________ _________
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| (1st, 2nd, 3rd, 4th, other)
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| Current inspection period _ ____,,1_ st_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
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| (1st, 2nd, 3rd)
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| Edition and Addenda of Section XI applicable to the inspection plans: The 2007 Edition through 2008 Addenda is applicable to the 5th Inspection Interval.
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| Date and revision of inspection plans: 5th Inspection Interval Inspection Plans - Volume 1- 10/11/2020 (Version 5.0}, Volume 3 - 10/9/2020 (Version 3.0}, Volume 4 - 8/1/2019 (Version 2.0}, and Volume 5 - 12/19/2019 (Version 2.0}. 2R27 Outage Plan - 10/8/2020 (Version 1.0} with 2R27 Outage Plan Scope Change SC-004
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| - 11/20/2019 Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans: Same Code Cases used for inspection and evaluation: N-716-1, N-722-1, N-776, N-513-4, N-532-5, N-648-2, and N-770-5 (if applicable, including cases modified by Case N-532 and later revisions)
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| 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_ _--'2='-R=2=7______
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| conform to the requirements of Section XI. (refueling outage number)
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| Signed R. M. McAdams c;;?~
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| Owner or Owner's Designee, Title Engineering Director Date 02/~e::e;e: /
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| 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. CT. 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.
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| 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 man~ny personal injury or property damage or a loss of any kind arising from or connected with this inspection.
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| Rodney S e n n ~ ~ ~ Commission _1:. :2=6::. :0: . :3ee.. .: C:. . l:. .;N:. . :. . :R_,____________
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| Inspector's S i g n ~ (National Board Number and Endorsement)
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| Date _D_Z-_/........,0..."5"'=--,._/_2--0
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| __Z-I_ _ _ __
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| 5)RUP2$52ZQHU¶V$FWLYLW\5HSRUW Table 1 Items with Flaws or Relevant Conditions That Required Evaluation for Continued Service Examination Item Description Evaluation Description Category and Item Number D-B Service Water leak on 2A Service CR 10633466 documents the D2.10 Water Pump vent line. There was a evaluation for operability, resulting in through wall leak identified upstream of Operable But Degraded / Non-the vacuum breaker Q2P16V580 and conforming due to the leak on ASME vent valve Q2P16V585. The leak was Class 3 piping. The location was too small to be measurable. The leak isolated until the piping was replaced by location is on the bottom side of the work order SNC1038624.
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| piping where it contacts the pipe support.
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| D-B A through-wall leak was discovered on CR 10633640 documents the D2.10 a 6 inch diameter piping portion of the evaluation for operability, resulting in 2C Service Water pump mini-flow line Operable But Degraded / Non-approximately 3 inches downstream of conforming due to the leak on ASME mini-flow isolation valve Q2P16V575. Class 3 piping. The location was The leak rate could not be measured isolated until the piping was replaced by but is described as very small (the work order SNC930315.
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| affected pipe had a wet spot, but no drops were observed during the visual inspection period; <1 dpm)
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| D-B A through-wall leak was noted on the CR 10739161 documents the D2.10 2A Residual Heat Removal (RHR) evaluation for operability, resulting in Engineered Safeguards Feature (ESF) the 2A RHR Room Cooler being Room Cooler Q2E16H003A Service declared Inoperable and the Unit 2 Water piping return line located in the Service Water declared Operable But 2A RHR Pump Room. The Degraded I Non-conforming due to the (approximately 1 drop every 8 minutes) leak on ASME Class 3 piping. The pinhole leak is coming from the weld location was isolated and repaired by material adjacent to the flange work order SNC1118151.
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| upstream of Q2P16V021A.This was identified during the ISi pressure test 160.27-2.
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| D-B A through-wall leak was noted on the CR 10742390 documents the D2.10 Service Water return piping from the 2B evaluation for operability, reference Diesel Generator near the flange PDO 2-20-01. The flaw was evaluated upstream of valve 01P16V593. This in accordance with Code Case N-513-was identified during the Unit 2 ISi 4, reference Request for Engineering pressure test 160.28-3. Review (RER) SNC1121545-01, and the impacted piping was replaced by work order SNC1121637.
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| 5)RUP2$52ZQHU¶V$FWLYLW\5HSRUW Table 2 Abstract of Repair/ Replacement Activities Required for Continued Service Code Item Description Description of Work Date Completed Repair/
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| Class Replacement Plan Number 3 2" Service Water piping Replaced section of 8/29/2019 SNC1038624 upstream of the 2A leaking Service Water pump vacuum breaker piping.
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| O2P16V580 and vent valve O2P16V585 3 6" Service Water piping Replaced section of 11/10/2020 SNC930315 and of the 2C Service Water leaking Service Water SNC1125762 pump mini-flow line piping and valve approximately 3 inches O2P16V578.
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| downstream of mini-flow isolation valve O2P16V575. Note that during repair, valve O2P16V578 weld end wall thickness was found out of design tolerance, reference CR 10750014 3 1-1/2" 2A RHR ESF Replaced flange and 9/17/2020 SNC1118151 Room Cooler weld due to pinhole O2E16H003A Service leak.
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| Water piping return line located in the 2A RHR Pump Room.
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| 3 8" Service Water return Replaced section of 11/6/2020 SNC1121637 piping from the 2B Diesel leaking Service Water Generator near the piping.
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| flange upstream of valve O1P16V593.
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| (}}
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