ML20141F607

Safety Evaluation Granting Util Requests for Relief from Inservice Insp Requirements of ASME Code,Section XI

ML20141F607
Person / Time
Site:	Peach Bottom
Issue date:	04/08/1986
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20141F605	List: ML20141F601 ML20141F607 ML20141F627
References
NUDOCS 8604230096
Download: ML20141F607 (10)

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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO REQUESTS FOR RELIEF FROM INSERVICE INSPECTION REQUIREMENTS PHILADELPHIA ELECTRIC COMPANY PEACH BOTTOM UNITS 2 AND 3 DOCKET N0. 50-277/278 INTRODUCTION Technical Specification 4.6.G for the Peach Bottom Atomic Power Station Units 2 and 3 states that inservice examination of ASME Code Class 1, 2, and 3 components shall be performed in accordance with Section XI of'the ASME i

Boiler and Pressure Vessel Code and applicable Addenda as required by 10 CFR 50.55a(g) except where specific written relief has been granted by the Commission.

Certain requirements of later editions and addenda of Section XI are impractical to perform on older plants because of the plants' design, component geometry, and materials of construction. Thus, 10 CFR 50.55a(g)(6)(i) authorizes the Commission to grant relief from those requirements upon making the necessary findings.

By letters dated June 28, 1984, December 21, 1984, January 31, 1985, February 1, 1985, and March 6,1985, Philadephia Electric Company submitted its inservice inspection program, revisions, or additional information related to requests for relief from certain Code requirements determined to be impractical to perform on the Peach Bottom Atomic Power Station Units 2 anct 3 during the inspection interval. The program is based on the requirements of the 1980 ~

Edition through Winter 1981 Addenda of Section XI of the ASME Code, and remains in effect until July 6, 1994 and December 13, 1994 for Units 2 and 3, respectively, unless the program is modified or changed prior to the interval end dates.

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EVALUATION Requests for relief from the requirements of Section XI which have been determined to be impractical to perform have been reviewed by the Staff's contractor, Science Applications International Corporation. The contractor's evaluations of the licensee's requests for relief and his recommendations are presented in the Technical Evaluation Report (TER) attached (ATTACHMENT 1). The staff has reviewed the TER and adopts the evaluations and recommendations. A summary of the determinations made by the staff is presented in the following tables:

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CONCLUSION Based on the review summarized, the staff concludes that the items for which relief is granted are impractical to perform, that relief granted from the examinating and testing requirements and alternate methods imposed through this document give reasonable assurance of the piping and component pressure boundary and support structural integrity, and that granting relief from the Code requirements found impractical here is authorized by law and will not endanger life or property, or the common defense and security, and is otherwise in the public interest considering the burden that could result if they were imposed on the facility.

Principal Contributors: G. Johnson and S. Lee Dated: April 8,1986 t

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TABLE 1 CLASS 1 COMPONENTS LICENSEE PROPOSED IWB-2500-1 IWB-2500-1 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEFREQdEST ITEM NO. EXAM. CAT. COMPONENT EXAMINED METHOD EXAMINATION STATUS Bl.11 & B-A Reactor Shell Welds Volumetric Volumetric Granted Bl.12 Pressure Bl.11: to Extent Provided Vessel Circumferential Practical Visual (VT-2)

B1.12: During System Longitudinal Pressure Tests is Performed B9.11 B-J Piping Circumferential Surface and Visual (VT-2) Granted Pressure Welds, Nom. Volumetric During System Provided Boundary Pipe Size > Pressure Tests Volumetric 4 in. (Welas and Surface Enclosed in of First Containment Pressure Penetrations, Boundary See Attachment 1 Weld Outside to TER, Relief Each Contain-Request 2.4.5) ment Penetration are Performed j 89.11 & B-J Piping Nom. Pipe Surface and Code Examina- Granted B9.12 Pressure Size > 4 in. Volumetric tion to Extent Boundary B9.11T Practical and Circumferential Visual (VT-2)

Welds During System B9.12: Pressure Tests Longitudinal Welds (Obstructed Welds, See Attachment 1 to TER, Relief Request 2.4.6)

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I TABLE 1 LLASS 1 COMPONENTS (continued)

LICENSEE PROPOSED IWB-2500-1 IWB-2500-1 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEF REQ 0EST ITEM NO. EXAM. CAT. COMPONENT EXAMINED METHOD EXAMINATION STATUS B9.11 & B-J Piping Nom. Pipe Surface Code Examina- Granted B9.12 Pressure Size > 4 in, and tion to Extent Provided Boundary B9.11? Volumetric Practical Code-Circumferential and Visual Required Welds (VT-2) During Surface 89.12: System Pressure Examination Longitudinal Tests is Performed Welds (Welds with Material and/or Design Constraints, See Attachment 1 to TER, Relief Request 2.4.7 and 2.4.8)

B10.10 B-K-1 Piping Integrally Volumetric Code Examina- Granted Pressure Welded Attach- or Surface tion to Extent Provided Boundary ments as Applicable Practical Code (Inaccessible and Visual Examination Welds, See (VT-2) During of Welds Attachment 1 System Pressure which Become to TER, Relief Tests Accecsible Request 2.4.9, Due to Main-2.4.10, and tenance is 2.4.11) Performed

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. CLASS 1 COMPONENTS (continued)

LICENSEE PROPOSED IWB-2500-1 IWB-2500-1 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEFREQUEST ITEM NO. EXAM. CAT. COMPONENT EXAMINED METHOD EXAMINATIGH STATUS B12.10 B-L-1 Reactor Pump Volumetric Surface Granted Recircu- Casing Provided lation Welds Volumetric Pump Upon Pump Disassembly for Mainten-ance is Per-~ ~

formed B12.20 B- L-2 Recircu- Pump Visual (VT-3) Code Examina- Granted lation Casing tion Upon Pump Pump Internal Disassembly Surface for Mainten-ance, Ultrasonic Surveillance and Visual (VT-2) During System Pressure Tests B12.50 B-M-2 Valve Valve Body, Visual (VT-3) Code Examina- Granted Exceeding tion Upon Valve 4 in. Nom. Disassembly Pipe Size for Mainten-ance, Ultra-sonic Surveil-lance and Visual (VT-2) During System Pressure Tests

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TABLE 3 COMPONENT 3 COMPONENTS

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TABLE 4 COMPONENTS SUPPORTS LICENSEE PROPOSED '

IWF-2500-1 IWF-2500-1 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEF REQUEST ITEM NO. EXAM. CAT. COMPONENT EXAMINED METHOD EXAMINATION STATUS F3.50 F-C Class 1, Spring Type Visual (VT-4) Technical Granted 2, 3 Supports, Specification Piping Constant Requirements Pumps Load Type and Supports, Valves Shock Absorbers, Hydraulic and Mechanical Type Snubbers e

TI.3LE 5 PRES 5URE TESTS IWA-5000 IWB-5000 IWC-5000 & LICENSEE PROPOSED SYSTEM OR IWD-5000 TEST PRESSURE ALTERNATIVE RELIEF REQUEST COMPONENT REQUIREMENT TEST PRESSURE STATUS Class 1 IWB-522T(a): Nominal Pressure Granted Hydrostatic Test of 1075 psig Pressure shall be at Temperature Specified in Table Between 185 F IWB-5220-1 Correspond- and 212 F ing to Selected Test Temperature Class 3 IWD-5223(a): Test Pressure Granted (High System Hydrostatic at 1.10 Times Pressure Test Pressure shall System Operating Service be at least 1.25 Pressure Water, Times System Pressure Emergency P for Systems with Service D5lignTemperature Water, and Above 200 F Emergency Cooling' Systems)

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