ML060950634

GALL AMP: XI.M35, One-Time Inspection of ASME Code Class 1 Small Bore Piping (Audit Worksheet GALL Report AMP)

ML060950634
Person / Time
Site:	Vermont Yankee
Issue date:	03/22/2006
From:	Morgan M NRC/NRR/ADRO/DLR/RLRC
To:	Office of Nuclear Reactor Regulation
morgan M NRR/NRC/DLR/RLRC, 415-2232
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References
%dam200611, TAC MC9668
Download: ML060950634 (7)

Text

AUDIT WORKSHEET GALL REPORT AMP PLANT: ______________________________

LRA AMP: __________________________ REVIEWER: ______________________

GALL AMP: XI.M35, One-Time Inspection of ASME Code Class 1 Small Bore DATE: __________________________

Piping Program Auditable GALL Criteria Documentation of Audit Finding Element Program A. This program is applicable to small-bore ASME Code Class 1 Consistent with GALL AMP: Yes No Description piping and systems less than -or equal to 4 inches nominal pipe Document(s) used to confirm Criteria:

size (NPS 4), which includes pipes, fittings, and branch connections. According to Table IWB-2500-1, Examination Category B-J Item No. B9.21 of the current ASME code, for small-bore Class 1 piping, a surface examination should be Comment:

included for piping less than or equal to NPS 4 and greater than or equal to NPS 1. Also, Examination Category B-P requires system leakage and hydrostatic tests. However, the staff believes that, for a one-time inspection to detect cracking resulting from thermal and mechanical loading or intergranular stress corrosion, the inspection should be a volumetric examination. This is to provide additional assurance that either aging of small-bore ASME Code Class 1 piping is not occurring or the aging is insignificant, such that an aging management program (AMP) is not warranted. This program is applicable only to plants that have not experienced cracking of ASME Code Class 1 small-bore piping resulting from stress corrosion or thermal and mechanical loading. Should evidence of significant aging be revealed by a one-time inspection or previous operating experience, periodic inspection will be proposed, as managed by a plant-specific AMP.

1. Scope of A. This program is a one-time inspection of a sample of ASME Consistent with GALL AMP: Yes No Program Code Class 1 piping less than or equal to NPS 4. The program Document(s) used to confirm Criteria:

XI.M35 One-Time Inspection of ASME Code Class 1Small Bore Piping 1

Program Auditable GALL Criteria Documentation of Audit Finding Element includes measures to verify that degradation is not occurring; thereby either confirming that there is no need to manage aging-related degradation or validate the effectiveness of any existing AMP for the period of extended operation. The one-time Comment inspection program for ASME Code Class 1 small-bore piping includes locations that are susceptible to cracking. Guidelines for identifying piping susceptible to potential effects of thermal stratification or turbulent penetration are provided in EPRI Report 1000701, "Interim Thermal Fatigue Management Guideline (MRP-24)," January 2001.

2. Preventive A. This program is an inspection activity independent of Consistent with GALL AMP: Yes No Actions methods to mitigate or prevent degradation. Document(s) used to confirm Criteria:

Comment:

3. Parameters A. This inspection detects cracking in ASME Code Class 1 Consistent with GALL AMP: Yes No Monitored/ small-bore piping. Document(s) used to confirm Criteria:

Inspected Comment:

4. Detection of A. The inspection is designed to provide assurance, in plants Consistent with GALL AMP: Yes No Aging Effects that have not experienced cracking of ASME Code Class 1 Document(s) used to confirm Criteria:

small-bore piping due to stress corrosion or thermal and mechanical loading, that aging of this piping is not occurring or that the effects of aging are not significant. For ASME Code Class 1small-bore piping, one-time inspections using volumetric Comment:

examination are performed on selected weld locations to detect cracking.

XI.M35 One-Time Inspection of ASME Code Class 1Small Bore Piping 2

Program Auditable GALL Criteria Documentation of Audit Finding Element

5. Monitoring A. This is a one-time inspection to determine whether cracking Consistent with GALL AMP: Yes No and Trending in ASME Code Class 1 small-bore piping resulting from stress Document(s) used to confirm Criteria:

corrosion or thermal and mechanical loading is an issue. A one-time volumetric inspection is an acceptable method for confirming that cracking of ASME Code Class 1 small-bore piping, as a result of stress corrosion or thermal and mechanical Comment:

loading, is not occurring in plants that have not experienced cracking due to these aging effects. However, evaluation of the inspection results may indicate the need for additional examinations, i.e., a plant-specific AMP, consistent with ASME Section XI, Subsection IWB. This inspection should be performed at a sufficient number of locations to assure an adequate sample. This number, or sample size, will be based on susceptibility, inspectability, dose considerations, operating experience, and limiting locations of the total population of ASME Code Class 1 small-bore piping locations.

6. Acceptance A. If flaws or indications exceed the acceptance criteria of Consistent with GALL AMP: Yes No Criteria ASME Code,Section XI, Paragraph IWB-3400, they will be Document(s) used to confirm Criteria:

evaluated in accordance with ASME Code,Section XI, Paragraph IWB-3131, and additional examinations are performed in accordance with ASME Code,Section XI, Paragraph IWB-2430. Comment:

7. Corrective A. The site corrective action program, quality assurance (QA) Consistent with GALL AMP: Yes No Actions procedures, site review and approval process, and Document(s) used to confirm Criteria:

administrative controls are implemented in accordance with the requirements of 10 CFR Part 50, Appendix B. As discussed in the appendix to this report, the staff finds the requirements of 10 CFR Part 50, Appendix B, acceptable to address the corrective Comment:

actions, confirmation process, and administrative controls.

8. A. See Item 7, above. Consistent with GALL AMP: Yes No Confirmation Document(s) used to confirm Criteria:

Process XI.M35 One-Time Inspection of ASME Code Class 1Small Bore Piping 3

Program Auditable GALL Criteria Documentation of Audit Finding Element Comment:

9. A. See Item 7, above. Consistent with GALL AMP: Yes No Administrative Document(s) used to confirm Criteria:

Controls Comment:

10. Operating A. This inspection uses volumetric inspection techniques with Consistent with GALL AMP: Yes No Experience demonstrated capability and a proven industry record to detect Document(s) used to confirm Criteria:

cracking in piping weld and base material. However, the application of the specific technique to ASME Code Class 1 small-bore piping needs to be qualified before the examination.

Comment:

XI.M35 One-Time Inspection of ASME Code Class 1Small Bore Piping 4

EXCEPTIONS Item Program Elements LRA Exception Description Basis for Accepting Exception Documents Reviewed Number (Identifier, Para.# and/or Page #)

1.

2.

ENHANCEMENTS Item Program Elements LRA Enhancement Description Basis for Accepting Enhancement Documents Reviewed Number (Identifier, Para.# and/or Page #)

1.

2.

DOCUMENT REVIEWED DURING AUDIT Document Number Identifier (number) Title Revision and/or Date 1.

2.

3.

4.

XI.M35 One-Time Inspection of ASME Code Class 1Small Bore Piping 5