ML20024E084

Safety Evaluation Supporting Requests for Relief from Inservice Insp Requirements

ML20024E084
Person / Time
Site:	Hatch
Issue date:	07/29/1983
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20023A487	List: ML20023A486 ML20024E082 ML20024E084 ML20024E088
References
TAC-07811, TAC-08019, TAC-7811, TAC-8019, NUDOCS 8308090160
Download: ML20024E084 (10)

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4j WASHINGTON. D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULAT' ION RELATED TO REQUESTS FOR RELIEF FROM INSERVICE INSPECTION REQUIREMENTS GEORGIA POWER C0'!PANY OGLETHORPE POWER CORPORATION MUNICIPAL ELECTRIC AUTHORITY OF GEORGIA CITY OF DALTON. GEORGIA EDWIN I. HATCM NUCLEAR PLANT, UNITS 1 & 2 DOCKET NOS. 50-321 & 50-366 INTRODUCTION Technical Specifications 4.6.K & 4.4.8 for the Edwin I. Hatch Nuclear Power Plant Units 1 & 2, respectively,' state that inservice examination of ASME Code Class 1, 2, and 3 components shall be performed in accordance with Section XI of the ASME Boiler and Pressurs 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 requirerrents upon making the necessary findings.

By letters dated August 3,1978, September 21, 1978, January 24, 1979, June 6,1979, May 1,1980, January 27, 1981, November 10, 1981, November 18,1981, March 2,1982 and June 11, 1382, Georgia Power 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 Edwin I. Hatch Nuclear Power Plants, Units 1 & 2 during the inspection interval.

The program is based on the 1974 Edition through Summer 1975 Addenda of Section XI of the ASME Code, and covers the following:

o Unit 1, the last 80 months of the current 120-month interval, April 30, 1976 to May 5, 1986 o

Unit 2, the entire 120-month interval from September 5,1979 to September 5, 1989 EVALUATION l

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, Inc.

The contractor's evaluations of the licensee's requests for relief and his recommendations are presented in the l

Technical Evaluation Report (TER) attached (ATTACHMENT 1).

The staff has reviewed the TER and agrees with the evaluations and recommendations.

A summary of the determinations made by the staff is presented in the following tables:

8308090160 830729 PDR ADOCK 05000321 G

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Based on the review summarized, the staff concludes that relief granted from the examination requirements and alternate methods imposed through this docu-ment give reasonable assurance of the piping and component pressure boundary and suppcrt structural integrity, that granting relief where the Code require-ments are impractical 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.

Environmental Consideration We have determined that granting relief from specific ASME Section XI Code requirements does not authorize a change in effluent types or total amounts nor an increase in power level and will not result in any significant environ-mental impact.

Having made this determination, we have further concluded that this is an action which is insignificant from the standpoint of environmental impact and,' pursuant to 10 CFR $51.5(d)(4), that an environmental impact statement or negative declara-ion and environmental impact aopraisal need not be preoared in connection with the grant of this relief.

Concl usion We have concluded, based on the considerations discussed above, that:

(1) there is reasonable assurance.that the health and safety of the public will not be endange~ red by operation in the prooosed manner, and (2) such activities will be conducted in compliance with the Com-mission's regulations and the issuance of this. action will not be l

inimical to the common defense and security or to the health and l

safety of the public.

Date:

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The following NRC personnel contributed to this Safety Evaluation:

l George Johnson.

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TABLE 1 CLASS 1 COMPONENTS LICENSEE PROPOSED RELIEF IWB-2600 IW8-2500 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE REQUEST ITEM NO. EXAM. CAT. COMPONENT EXAMINED METHOD EXAM.

STATUS Bl.18 B-0 Reactor Pressure Volumetric None Vessel Retaining GRANTED Weld: in the Control Rod Drive Housing

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B4.5 B-J Piping Inaccessible Volu-Surface Exami-GRANTED (Unit 1 Welds in metric mation of PROVIDED only)

Penetrations Accessible THE FIRST Flued Head ACCESSIBLE weld WELD OUT-SIDE THE PENETRATION IS VOLU-METRICALLY EXAMINED B4.5 B-J Piping Inaccessible Volu-Volumetric Welds not in metric to extend GRANTED Penetration practical and surface to supplement 84.9 B-K-1 Support Integrally Volu-Update to 1977 B5.4 Members Welded metric Edition,1979 B6.4 for Supports Addenda GRANTED (1)

Piping J,

Section XI Pumps (Surface

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Valves

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Exam)

(1) Relief granted by letter dat.ed January 27, 1982, Stolz to Beckham.

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TABLE 1 CLASS 1 COMPONENTS LICENSEE PROPOSED RELIEF IWB-2600 IWB-2500 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE REQUEST ITEM NO. EXAM. CAT. COMPONENT EXAMINED METHOD EXAM.

STATUS B4.10 B-K- 2 Hydraulic All support Visual Examine to B5.5 Snubbers, components Requirements GRANTED B6.5

Piping, of Tech.

Pumps, &

Specs.

Valves 84.10 B-K-2 Support All-support Visual Examine to B5.5 compo-components Requirements GRANTED B6. 5 nents for of 1980 Edition (Relief.

Piping, through Winter re-

Pumps, 1980 Addenda quested Valves March 2, 1982)

B6.7 B-M-2 Valves Internal Visual Examine when

surface, valve is GRANTED disassembled in i

part

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TABLE 2

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CLASS 2 COMPONENTS LICENSEE PROPOSED RELIEF IWC-2600 IWC-2520 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE REQUEST ITEM NO. EXAM. CAT. COMPONENT EXAMINED METHOD EXAM.

STATUS C2.1 C-F Piping Circum-Volu-Examine to C2.2 C-G ferential metric Extent GRANTED C2.3 Butt Welds practical (Unit 2 only)

C2.5 C-E-1

Piping, Support Surface Examine to (Unit 2

Pumps, Members Extent GRANTED only)

Valves practical l

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TABLE 2 CLASS 2 COMPONENTS LICENSEE PROPOSED RELIEF IWC-2600 IWC-2520 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE REQUEST ITEM NO. EXAM. CAT. COMPONENT EXz' MINED METHOD EXAM.

STATUS C2.6 C-E-2 Hydraulic All support Visual Examine to C3.4 Snubbers, components

' Requirements GRANTED C4.4

Piping, of Tech. Specs.

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Pumps &

Valves C2.6 C-E-2 Support All support Visual

. Examine to C3.4 Compo-components Requirements C4.4 nents for of 1980 GRANTED l

Piping, Edition

Pumps, through 1980 Valves Addenda C3.2 C-0 Pumps Bolting Visual Surface C4.2 and Examination Surface when dis-GRANTED or volu-assembled metric i

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TABLE 3 CLASS 3 COMPONENTS LICENSEE RELIEF SYSTEM OR AREA TO BE REQUIRED PROPOSED REQUEST COMPONENT EXAMINED METHOD ALTERNATIVE STATUS Support Supports on Visual Examine to the Components Piping, Pumps Requirements of the GRANTED and Valves 1980 Edition through Winter 1930 Addenda Pumps.

Centrifugal Visual Examine during dRANTED River Intake IWD-2410 maintenance Pumps (b) and (c) o l

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TABLE 4 PRESSURE TEST IWA-5000 IWB-5000 IWC-5000 &

LICENSEE PROPOSED RELIEF SYSTEM OR IWD-5000 TEST ALTERNATIVE REQUEST COMPONENT PRESSURE REQUIREMENT TEST PRESSURE STATUS Class 1, 2 & 3 i Hold Time IWA-5210(a)

For non-insulated GRANTED piping hold time to be 10 min.

Class 1 IWB-5000 Where test temperature GRANTED Test Temperature of > 100*F cannot be

> 100/*F meti test @ > 70 F Class 2 IWA-5230 Test to Class 1 GRANTED non-isolable Pressures systems Class 2 IWC-5000 Where test temperature Test Temperature cannot be GRANTED

> 100*F

> 100*F test @ > 70 F Class 3 IWD-2410(b)

Test at operating (Service (Test Pressure pressure GRANTED Water Requirements 1.10 System)

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4 TABLE 5 ULTRASONIC EXAMINATION TECHNIQUE LICENSEE PROPOSED SYSTEM OR ALTERNATIVE RELIEF REQUEST COMPONENT REQUIREMENT EXAMINATION METHOD STATUS (No Relief Requested) s e

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O-TABLE 6 GENERAL RELIEF REQUESTS ALL CLASSES / COMPONENTS RELIEF LICENSEE REQUEST SYSTEM / COMPONENT REQUIREMENT ALTERNATE STATUS Class 2 Components IWC-2520(9)

Use Exemption NOT Exempted Under Exempt Piping Criteria of GRANTED IWC-1220(a)

Welds in RHR, ECCS 1977 Edition (a) Components in and CHRS through Summer systems where both 1979 Addenda temperature and pressure are equal to or less than 275 psig and 200*F respectively 1

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