ML060950323
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AUDIT WORKSHEET GALL REPORT AMP PLANT: ______________________________
LRA AMP: __________________________ REVIEWER: ______________________
GALL AMP: XI.M8, BWR Penetrations DATE: __________________________
Program Auditable GALL Criteria Documentation of Audit Finding Element Program A. The program includes (a) inspection and flaw evaluation in Consistent with GALL AMP: Yes No Description conformance with the guidelines of staff-approved boiling water Document(s) used to confirm Criteria:
reactor vessel and internals project BWRVIP-49 and BWRVIP-27 documents, and Comment:
B. (b) monitoring and control of reactor coolant water chemistry Consistent with GALL AMP: Yes No in accordance with the guidelines of BWRVIP-29 (Electric Document(s) used to confirm Criteria:
Power Research Institute [EPRI] TR-103515) to ensure the long-term integrity and safe operation of boiling water reactor (BWR) vessel internal components. BWRVIP-49 provides guidelines for instrument penetrations, and BWRVIP-27 Comment:
addresses the standby liquid control (SLC) system nozzle or housing.
- 1. Scope of A. The program is focused on managing the effects of cracking Consistent with GALL AMP: Yes No Program due to stress corrosion cracking (SCC) or intergranular stress Document(s) used to confirm Criteria:
corrosion cracking (IGSCC). The program contains preventive measures to mitigate SCC or IGSCC, inservice inspection (ISI) to monitor the effects of cracking on the intended function of the components, and repair and/or replacement as needed to Comment:
maintain the ability to perform the intended function. The inspection and evaluation guidelines of BWRVIP-49 and BWRVIP-27 contain generic guidelines intended to present appropriate inspection recommendations to assure safety XI.M8 BWR Penetrations 1
Program Auditable GALL Criteria Documentation of Audit Finding Element function integrity. The guidelines of BWRVIP-49 provide information on the type of instrument penetration, evaluate their susceptibility and consequences of failure, and define the inspection strategy to assure safe operation. The guidelines of BWRVIP-27 are applicable to plants in which the SLC system injects sodium pentaborate into the bottom head region of the vessel (in most plants, as a pipe within a pipe of the core plate
)P monitoring system). The BWRVIP-27 guidelines address the region where the )P and SLC nozzle or housing penetrates the vessel bottom head and include the safe ends welded to the nozzle or housing. Guidelines for repair design criteria are provided in BWRVIP-57 for instrumentation penetrations, and BWRVIP-53 for SLC line.
- 2. Preventive A. Maintaining high water purity reduces susceptibility to SCC or Consistent with GALL AMP: Yes No Actions IGSCC. Reactor coolant water chemistry is monitored and Document(s) used to confirm Criteria:
maintained in accordance with the guidelines in BWRVIP-29 (EPRI TR-103515). The program description and the evaluation and technical basis of monitoring and maintaining reactor water chemistry are presented in Chapter XI.M2, Water Chemistry. Comment:
- 3. Parameters A. The program monitors the effects of SCC/IGSCC on the Consistent with GALL AMP: Yes No Monitored/ intended function of the component by detection and sizing of Document(s) used to confirm Criteria:
Inspected cracks by ISI in accordance with the guidelines of approved BWRVIP-49 or BWRVIP-27 and the requirements of the American Society of Mechanical Engineers (ASME) Code,Section XI, Table IWB 2500-1 (2001 edition including the 2002 Comment:
and 2003 Addenda). An applicant may use the guidelines of BWRVIP-62 for inspection relief for vessel internal components with hydrogen water chemistry, provided that such relief is submitted under the provisions of 10 CFR 50.55a and approved by the staff.
- 4. Detection of A. The evaluation guidelines of BWRVIP-49 and BWRVIP-27 Consistent with GALL AMP: Yes No Aging Effects recommend that the inspection requirements currently in ASME Document(s) used to confirm Criteria:
Section XI continue to be followed. The extent and schedule of the inspection and test techniques prescribed by the ASME XI.M8 BWR Penetrations 2
Program Auditable GALL Criteria Documentation of Audit Finding Element Section XI program are designed to maintain structural integrity and ensure that aging effects will be discovered and repaired Comment:
before the loss of intended function of the component.
Inspection can reveal cracking and leakage of coolant. The nondestructive examination (NDE) techniques appropriate for inspection of BWR vessel internals including the uncertainties inherent in delivering and executing NDE techniques in a BWR, are included in BWRVIP-03. Instrument penetrations and SLC system nozzles or housings are inspected in accordance with the requirements of ASME Section XI, Subsection IWB.
Components are examined and tested as specified in Table IWB-2500-1, examination categories B-E for pressure-retaining partial penetration welds in vessel penetrations, B-D for full penetration nozzle-to-vessel welds, B-F for pressure-retaining dissimilar metal nozzle-to-safe end welds, or B-J for similar metal nozzle-to-safe end welds. In addition, these components are part of examination category B-P for pressure-retaining boundary. Further details for examination are described in Chapter XI.M1, ASME Section XI, Inservice Inspection, Subsections IWB, IWC, and IWD, of this report.
- 5. Monitoring A. Inspections scheduled in accordance with IWB-2400 and Consistent with GALL AMP: Yes No and Trending approved BWRVIP-48 or BWRVIP-27 provide timely detection Document(s) used to confirm Criteria:
of cracks. The scope of examination and reinspection must be expanded beyond the baseline inspection if flaws are detected.
Comment:
- 6. Acceptance A. Any indication detected is evaluated in accordance with Consistent with GALL AMP: Yes No Criteria ASME Section XI or other acceptable flaw evaluation criteria, Document(s) used to confirm Criteria:
such as the staff-approved BWRVIP-49 or BWRVIP-27 guidelines. Applicable and approved BWRVIP-14, BWRVIP-59, and BWRVIP-60 documents provide guidelines for evaluation of crack growth in stainless steels (SSs), nickel alloys, and low- Comment:
alloy steels, respectively.
- 7. Corrective A. Repair and replacement procedures in staff-approved Consistent with GALL AMP: Yes No XI.M8 BWR Penetrations 3
Program Auditable GALL Criteria Documentation of Audit Finding Element Actions BWRVIP-57 and BWRVIP-53 are equivalent to those required in Document(s) used to confirm Criteria:
the ASME Section XI. Guidelines for repair design criteria are provided in BWRVIP-57 for instrumentation penetrations and BWRVIP-53 for standby liquid control line. As discussed in the appendix to this report, the staff finds that licensee Comment:
implementation of the guidelines in BWRVIP-48, as modified, will provide an acceptable level of quality for inspection and flaw evaluation of the safety-related components addressed in accordance with 10 CFR Part 50, Appendix B, corrective actions.
- 8. A. Site quality assurance (QA) procedures, review and approval Consistent with GALL AMP: Yes No Confirmation processes, and administrative controls are implemented in Document(s) used to confirm Criteria:
Process accordance with the requirements of 10 CFR Part 50, Appendix B. As discussed in the appendix to this report, the staff finds that licensee implementation of the guidelines in BWRVIP-48, as modified, will provide an acceptable level of quality for Comment:
inspection and flaw evaluation of the safety-related components addressed in accordance with the 10 CFR Part 50, Appendix B, confirmation process and administrative controls.
- 9. A. See Item 8, above. Consistent with GALL AMP: Yes No Administrative Document(s) used to confirm Criteria:
Controls Comment:
- 10. Operating A. Cracking due to SCC or IGSCC has occurred in BWR Consistent with GALL AMP: Yes No Experience components made of austenitic stainless steels and nickel Document(s) used to confirm Criteria:
alloys. The program guidelines are based on an evaluation of available information, including BWR inspection data and information about the elements that cause IGSCC, to determine which locations may be susceptible to cracking. Implementation Comment:
of the program provides reasonable assurance that cracking will be adequately managed so the intended functions of the instrument penetrations and SLC system nozzles or housings XI.M8 BWR Penetrations 4
Program Auditable GALL Criteria Documentation of Audit Finding Element will be maintained consistent with the current licensing basis CLB) for the period of extended operation.
XI.M8 BWR Penetrations 5
EXCEPTIONS Item Program Elements LRA Exception Description Basis for Accepting Exception Documents Reviewed Number (Identifier, Para.# and/or Page #)
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ENHANCEMENTS Item Program Elements LRA Enhancement Description Basis for Accepting Enhancement Documents Reviewed Number (Identifier, Para.# and/or Page #)
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DOCUMENT REVIEWED DURING AUDIT Document Number Identifier (number) Title Revision and/or Date 1.
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