ML12242A236

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Owner'S Activity Report for Refueling Outage 13 Inservice Examinations
ML12242A236
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 08/16/2012
From: Swift P
Constellation Energy Group, EDF Group, Nine Mile Point
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML12242A236 (15)
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Text

P.O. Box 63 C EN G ..

a joint venture of Lycoming, NY 13093 0 ConstellationF4eg--eDF wEnergy,%#

NINE MILE POINT NUCLEAR STATION August 16, 2012 U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 ATTENTION: Document Control Desk

SUBJECT:

Nine Mile Point Nuclear Station Unit No. 2; Docket No. 50-410 2012 Owner's Activity Report for Refueling Outage 13 Inservice Examinations Pursuant to 10 CFR 50.55a, Nine Mile Point Nuclear Station, LLC (NMPNS) is submitting the enclosed 2012 Owner's Activity Report for Nine Mile Point Unit 2 (NMP2), which summarizes the results of examinations performed during the NMP2 spring 2012 refueling outage (RFO13) for the Second Inservice Inspection Period of the Third Ten-Year Inservice Inspection Interval (April 5, 2008 to April 4, 2018).

This report meets the requirements of the American Society of Mechanical Engineers (ASME) Code Case N-532-4, "Repair/Replacement Activity Documentation Requirements and Inservice Summary Report Preparation and Submission," as approved for use by Regulatory Guide 1.147, "Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1."

Should you have any questions regarding the information in this submittal, please contact John J. Dosa, Director Licensing, at (315) 349-5219.

Very truly yours, Paul M. Swift Manager Engineering Services 04~--T

Document Control Desk August 16, 2012 Page 2 PMS/DEV

Enclosure:

Nine Mile Point Unit 2, Third Inservice Inspection Interval, Second Inservice Inspection Period, 2012 Owner's Activity Report for RFO13 Inservice Examinations cc: NRC Regional Administrator, Region I NRC Project Manager NRC Resident Inspector

ENCLOSURE NINE MILE POINT UNIT 2 THIRD INSERVICE INSPECTION INTERVAL SECOND INSERVICE INSPECTION PERIOD 2012 OWNER'S ACTIVITY REPORT FOR RFO13 INSERVICE EXAMINATIONS Nine Mile Point Nuclear Station, LLC August 16, 2012

Energy Group 0Constellation Nine Mile Point Nuclear Station THIRD INSERVICE INSPECTION INTERVAL SECOND INSERVICE INSPECTION PERIOD 2012 OWNER'S ACTIVITY REPORT FOR RFO13 INSERVICE EXAMINATIONS Prepared For Nine Mile Point Nuclear Station Unit 2 P.O. Box 63, Lake Road Lycoming, New York 13093 Commercial Service Date: April 5, 1988 NRC Docket Number: 50-410 Document Number: CNG-NMP2-OAR-003-013 Revision Number: 00 Date: July 15, 2012 Prepared by: 114A.w=

Jeffre. on NS ISI Program Owner Reviewed by:

Todd L. Davis - NM )NS Site ISI & CISI Program Implementer Reviewed by: )j '

  • Carlo Mc ay NMPN Re ir & Replacement Program Owner Reviewed b Briggs - Su erviso Si ngineering Programs Approved by:

Todd Fiorenzae ToddFiornz*" eral Su7 era Supe.or Site Engineering Programs

Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 0ConselUon Energy G THIRD INSERVICE INSPECTION INTERVAL Rev. 00 Nine Mile Point 2012 OWNER'S ACTIVITY REPORT Nuclear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 2 of 12 TABLE OF CONTENTS T a b le of C o nte nts .................................................................................................................................................... 2 R e co rd of Re v isio n ..................................................................................................................................................... 3 Ab s tra ct ...................................................................................................................................................................... 4 Form OAR-1 Owner's Activity Report for ASME Section XI Inspection & Testing Plans ................................... 6 Table 1 Items with Flaws or Relevant Conditions that Required Evaluation for Continued Service .................... 7 Table 2 Abstract of Repairs, Replacements, or Corrective Measures Required for Continued Service ............. 11

O Constellaton Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 rnergy Group THIRD INSERVICE INSPECTION INTERVAL Rev. 00 Nine Mile Pt 2012 OWNER'S ACTIVITY REPORT Nudear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 3 of 12 00 July 15,2012 Entire Initial issue of Owner's Activity Report for ASME Document Section Xl Inservice Inspection, Containment Inservice Examinations, and Pressure Tests and Alternate Risk-Informed Inspection in accordance with the requirements of ASME Code Case N-532-4.

Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 O Constellation Energy Gro THIRD INSERVICE INSPECTION INTERVAL Rev. 00 Nine Mile Point 2012 OWNER'S ACTIVITY REPORT Nudear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 4 of 12 ABSTRACT ASME Section Xl Code Case N-532-4 requires submission of the Owner's Activity Report to the regulatory and enforcement authorities having jurisdiction at the plant site within 90 calendar days of the completion of each refueling outage.

This Owner's Activity Report summarizes the results of the Nine Mile Point Nuclear Station (NMPNS), Unit 2, American Society of Mechanical Engineers (ASME) Section Xl In-service Inspection, Risk-Informed Inspection, Containment In-service Examinations, and Pressure Tests performed since the last report dated May 4, 2010 through Refueling Outage Thirteen (RFO13) ending June 9, 2012. RFO13 is the first of two outages scheduled during the Second In-service Inspection Period that started on April 5, 2011 and is scheduled to end on April 4, 2015.

The attached Table 1 and 2 include flaws and conditions (those meeting the requirements of Code Case N-532-

4) identified since the last Owner's Activity Report following Refueling Outage RFO 12.

As an alternate to the requirements of the ASME, Boiler and Pressure Vessel Code (B&PVC), Section Xl, Article IWA-6000, NMPNS is implementing ASME Code Case N-532-4, Alternative Requirements to Repair and Replacement Documentation Requirements and In-service Summary Report Preparation and Submission as Required by IWA-4000 and IWA-6000, Section Xl, Division 1". Regulatory Guide 1.147, Revision 15, approved ASME Code Case N-532-4 for use. This Report complies with the requirements of Code Case N-532-4 and the conditions identified in RG 1.147.

OWNER'S ACTIVITY REPORTS - FORM OAR-1 Owner Activity Report Form OAR-1 was prepared and certified upon completion of the Nine Mile Point Unit 2, 2012 refueling outage (RFO13) examination activity in accordance with the following NMPNS inspection plans and schedules:

CNG-NMP2-1SI-003, Third Ten-Year In-service Inspection Plan and Implementing Schedule, (includes the Alternate Risk-Informed Inspection Program)

  • CNG-NMP2-CISI-002, Second Containment In-service Inspection Plan and Implementing Schedule
  • NMP2-PT-008, Inservice Pressure Testing Program Plan In addition to the Owner's Activity Report, Form OAR-I, the following Tables are also included:
a. Items with Flaws or Relevant Conditions that Require Evaluation for Continued Service, Table 1, provides a listing of item(s) with flaws or relevant conditions that required evaluation to determine acceptability for continued service, whether or not the flaw or relevant condition was discovered during a scheduled examination or test, and provides such information as Examination Category, Examination Item Number, Item Description, Flaw Characterization (as required by IWA-3300).

Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 O Costelalion Energy G p THIRD INSERVICE INSPECTION INTERVAL Rev. 00 2012 OWNER'S ACTIVITY REPORT Nuclear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 5 of 12

b. Abstract of Repairs, Replacements or Corrective Measures Required for Continued Service, Table 2, identifies those items containing flaws or relevant conditions that exceeded Division 1 acceptance criteria. This information is required even if the discovery of the flaw or relevant condition that necessitated the repair/replacement activity did not result from an examination or test required by Division 1. If the acceptance criterion for a particular item is not specified in Division 1, the provisions of IWA-3100(b) shall be used to determine which repair/replacement activities are required to be included in the abstract.

In accordance with ASME Section XI, IWB-2412(a), IWC-2412, IWD-2412 IWE-2412(a), and IWF-2410(b) and with the exception of the examinations that may be deferred until the end of the inspection interval as specified in Table IWB-2500-1, IWC-2500-1, IWD-2500-1, IWF-2500-1 and IWE-2500-1, including those examinations which NMPNS has requested and received approval in the form of proposed alternatives in accordance with 10CFR50.55a(a)(3), the required examinations in each examination category have been completed for the First In-service Inspection Period in accordance with Tables IWB-2412-1, IWC-2412-1, IWD-2412-1, IWE-2412-1, and IWF-2410-2.

O Constelalaton Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 ENergya p THIRD INSERVICE INSPECTION INTERVAL Rev. 00 Nine Mile Point 2012 OWNER'S ACTIVITY REPORT Nuclear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 6 of 12 FORM OAR-1 OWNER'S ACTIVITY REPORT As required by the provisions of the ASME Code Case N-532-4 KI ý' CNC~-NMP2-C)AR-flfl3-O1 3 CNG-NMP2-OAR-003-013 Plant Nine Mile Point Nuclear Station. P. 0. Box 63, Lycoming, New York 13093 (Name and Address of Plant)

Plant Unit 2 Commercial Service Date April 5. 1988 Refueling Outage Number RFO13 Current Inspection Interval 3rd Interval for ISI & PT, 2 nd Interval for CISI April 5, 2008 to April 5. 2018 (1st, 2nd, 3rd, 4th, Other)

Current Inspection Period Second In-service Inspection Period April 5, 2011 to April 5, 2015 (1st, 2nd, 3rd)

Edition and Addenda of Section Xl applicable to the Inspection Plans 2004 Edition, No Addenda Date and Revision of Inspection Plans CNG-NMP2-ISI-003, Revision 01, August 28, 2009 (ISI), CNG-NMP2-CISI-002, Revision 01, August 28, 2009 (Containment ISI), NMP2-PT-008 Revision 05, March 10, 2010 (Pressure Test)

Edition and Addenda of ASME Section Xl applicable to Repair/Replacement activities, if different than the Inspection Plan N/A (same Code Edition/Addenda)

(if applicable)

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 RFO1 3 conform to the requirements of Section XI.

(refueling outage number)

Signed Date (General Supervisor - Engineering Programs)

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of and employed by of 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 Xl.

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.

Commissions Inspector's Signature National Board, State, Province, and Endorsements Date

O Constellation Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 Energy Group THIRD INSERVICE INSPECTION INTERVAL Rev. 00 Nine Mile Pt 2012 OWNER'S ACTIVITY REPORT Nuclear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 7 of 12 TABLE I ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-4 EVALUATION DESCRIPTION EXAMINATION ITEM ITEM CATEGORY NUMBER DESCRIPTION F-A FI.10A Sway Strut (Pipe Condition Report CR-2012-002984 documents the identification of a Support) relevant condition exceeding the acceptance criteria of IWF-3410.

While performing an ISI examination in the NMP2 drywell it was noted that ASME Class 1 sway strut pipe support 2RHS-PSST348A1 showed evidence of misalignment and binding (strut rod end in contact with pipe clamp).

A Design Engineering evaluation concluded that the condition of axial misalignment is not acceptable for continued service and as such required correction prior to return to service.

The initial additional examinations (a.k.a. scope expansion),

required of ASME Section XA IWF-2430(a), identified one of four additional supports as having the condition of misalignment and binding. This additional condition is documented in Condition Report CR-2012-003568 and resulted in the need for further additional examinations as required by ASME Section XI IWF-2430(b). All nine additional supports were found to be free of the misalignment condition.

Both supports identified as having the out of alignment condition were corrected via maintenance, were re-inspected (pre-service examination), and have been scheduled for Code required successive examinations.

F-A F1.30A Sway Strut (Pipe Condition Report CR-2012-003402 documents the identification of a Support) relevant condition exceeding the acceptance criteria of IWF-3410.

While performing an ISI examination in the NMP2 Service Water Screen Well it was noted that ASME Class 3 sway strut pipe support 2SWQ-PSST540B3 showed evidence of misalignment and binding (strut rod end incontact with pipe clamp).

A Design Engineering evaluation concluded that the condition of axial misalignment is not acceptable for continued service and as such required correction prior to return to service.

The initial additional examinations (a.k.a. scope expansion),

required of ASME Section XI IWF-2430(a), found all five additional supports to be free of the misalignment condition. As such, no further additional examinations were required.

2SWQ-PSST540B3 was corrected via maintenance, was re-inspected (pre-service examination), and has been scheduled for Code required successive examinations.

Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 0 ConsteL-Mlon Energy Group THIRD INSERVICE INSPECTION INTERVAL Rev. 00 Nine Mile Point 2012 OWNER'S ACTIVITY REPORT Nuclear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 8 of 12 TABLE I (continued)

ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-4 EVALUATION DESCRIPTION EXAMINATION ITEM ITEM CATEGORY NUMBER DESCRIPTION F-A FI.10A Sway Strut (Pipe Condition Report CR-2012-003568 documents the identification of a Support) condition unacceptable for continued service in accordance with IWF-3410. While performing an ISI examination in the NMP2 drywell it was noted that ASME Class 1 sway strut pipe support 2RHS-PSST346A1 showed evidence of misalignment and binding (strut rod end incontact with pipe clamp).

This condition was identified during the additional examinations (scope expansion) required of Condition Report CR-2012-002984 discussed above.

A Design Engineering evaluation concluded that the condition of axial misalignment is not acceptable for continued service and as such required correction prior to return to service.

As indicated above, the out of alignment condition was corrected via maintenance, the support was re-inspected (pre-service examination), and has been scheduled for Code required successive examinations.

F-A F1.10A Sway Strut (Pipe Condition Report CR-2012-003648 documents the identification of a Support) condition unacceptable for continued service in accordance with IWF-3410. While performing an ISI examination in the NMP2 drywell it was noted that ASME Class 1 sway strut pipe support 2RHS-PSST987A1 showed evidence of misalignment.

An Engineering evaluation concluded that the identified condition, though undesirable, was in fact acceptable for continued service in accordance with ASME Section Xl IWF-3122.3(a). Since the condition was acceptable for continued service no further additional Code examinations were required. The support was restored to original design configuration in accordance with IWF-3122.3(b).

The subject support was re-inspected and found acceptable following corrective maintenance.

Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 O Constellaioon Rev. 00 Energy Group THIRD INSERVICE INSPECTION INTERVAL Nine Mile Pot 2012 OWNER'S ACTIVITY REPORT Nudear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 9 of 12 TABLE 1 (continued)

ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-4 EVALUATION DESCRIPTION EXAMINATION ITEM ITEM CATEGORY NUMBER DESCRIPTION F-A F1.10C Variable Spring (Pipe Condition Report CR-2012-004124 documents the identification of a Support) condition unacceptable for continued service in accordance with IWF-3410. While performing an ISI examination in the NMP2 Secondary Containment it was noted that ASME Class 1 variable spring pipe support 2WCS-PSSH698A1 setting exceeded allowable deviation.

An Engineering evaluation concluded that the identified condition, though undesirable, was infact acceptable for continued service in accordance with ASME Section XI IWF-3122.3(a). Since the condition was acceptable for continued service no further additional Code examinations were required. The support was restored to original design configuration in accordance with IWF-3122.3(b).

The subject support was re-inspected and found acceptable following corrective measures.

B-P B15.10 Pressure Retaining The ASME Class 1 end of refueling outage vessel leakage test Components (Bolted identified leakage exceeding the level that requires a Design Mechanical Engineering Evaluation in accordance with station procedures.

Connections) Station procedures require Design Engineering Evaluation for any leakage originating from a bolted connection.

Condition Report CR-2012-005096 documents an undesirable condition associated with 60 drops per minute leakage from the ASME Class 1 valve 2RCS*HYV17B body-to-bonnet bolted flange connection. A Design Engineering Evaluation concludes that the identified leakage is acceptable as-is for continued service. Work Order C91907821 has been generated to address this condition.

Condition Reports CR-2012-005094 and CR-2012-005113 document undesirable conditions associated with leakage from Control Rod Drive bolted flange connections. The as-found leakage ranged from 2 drops per minute to 108 drops per minute.

The as-left leakage was reduced significantly following scramming of control rod drives. Furthermore, during the final 900 psi drywell closeout inspection Under-vessel leakage had fallen to 1 drop every 2 - 3 minutes and no leakage was observed from the 2RCS*HYV17B bonnet as captured in CR-2012-005613.

A Design Engineering Evaluation concludes that the identified.

leakage is acceptable as-is for continued service.

Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 O ConstellaionI Energy Gr THIRD INSERVICE INSPECTION INTERVAL Rev. 00 Nine Mile Point 2012 OWNER'S ACTIVITY REPORT NuclearStation FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 10 of 12 TABLE 1 (continued)

ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-4 EVALUATION DESCRIPTION EXAMINATION ITEM ITEM CATEGORY NUMBER DESCRIPTION F-A F1.30A Sway Strut and Restraint Condition Report CR-2012-003085 documents the identification of (Pipe Supports) an unacceptable condition requiring engineering evaluation for continued service. While performing Structural Maintenance Rule Walk-Down of Service Water piping located inthe NMP2 Service Water tunnel it was noted that ASME Class 3 sway strut pipe supports 2SWP-PSST1425A3 and 2SWP-PSST1426A3 are deteriorated having heavy surface corrosion. Work Order C91856316 has been initiated to address this condition.

A Design Engineering evaluation concluded that the identified condition, though undesirable, is not a nonconformance and as such is acceptable for continued service in accordance with ASME Section Xl IWF-3122.3(a). Since the condition was acceptable for continued service no further additional Code examinations were required. The evaluation recommends performing maintenance to restore the support to original design configuration.

Condition Report CR-2012-002953 documents a similar condition on additional safety-related Service Water pipe supports located in the Service Water pipe tunnel. Service Water supports 2SWP-PSR777A3, 2SWP-PSST776A3 2SWP-PSR775A3, 2SWP-PSR774A3, 2SWP-PSR732A3 and 2SWP-PSR733A3 were observed to have heavy corrosion and structural steel metal loss of up to 20% of the original thickness. The Design Engineering evaluation associated with this condition concludes that the support conditions remain functional but do not meet the current pipe support design requirements therefore the identified condition is a nonconformance. Maintenance is currently planned and scheduled to perform additional NDE (thickness readings) to verify condition of support members and clean and coat support steel. The supports identified within CR-2012-002953 are safety-related but exempt from ASME Section Xl examination requirements. Work Order C91855634 has been initiated to address this condition.

O Consteflation

-rg-y, GrOUp Nine Mile Point Nuclear Station Unit 2 THIRD INSERVICE INSPECTION INTERVAL CNG-NMP2-OAR-003-13 Nne MlPoit Rev. 00 Nine Mile Point 2012 OWNER'S ACTIVITY REPORT Nuclear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 11 of 12 TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-4 REPAIR/REPLACE DESCRIPTION MENT CODE ITEM OF DATE PLAN NUMBER CLASS DESCRIPTION WORK COMPLETED None

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Nine Mile Point Nuclear Station Unit 2 CNG-NMP2-OAR-003-13 O

Energy G Nine Mile Pt THIRD INSERVICE INSPECTION INTERVAL 2012 OWNER'S ACTIVITY REPORT Rev. 00 Nuclear Station FOR Date: July 15, 2012 INSERVICE EXAMINATIONS Page 12 of 12 END OF INSERVICE INSPECTION OWNER'S ACTIVITY REPORT FOR REFUELING OUTAGE THIRTEEN (RFO13)

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