ML18141A541

Safety Evaluation Accepting Licensee 801215,820325 & 0525 Requests for Relief from ASME Inservice Insp Requirements

ML18141A541
Person / Time
Site:	Surry
Issue date:	02/28/1984
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML18141A538	List: ML18141A537 ML18141A539 ML18141A541 ML18141A542 ML18152A011
References
NUDOCS 8403140202
Download: ML18141A541 (16)

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ENCLOSURE SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO_REQUESTS FOR RELIEF FROM INSERVICE INSPECTION REQUIREMENTS (December 15, 1980, March 25., ]982, and May 25, 1982 r_equests)

VIRGINIA ELECTIRC AND POWER COMPANY SURRY NUCLEAR POWER STATION UNIT 1 AND 2 DOCKET NO. 50-280 & 281 INTRODUCTION Technical Specification 4.2-1 for the Surry Nuclear Power*station Units 1 & 2 Nuclear plants states 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 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 1 design, component geometry, and materials of construction.

Thus, 10 CFR 50.55a(g)(6)(i) authorizes the Co~mission to grant relief from those requirements upon making the necessary findings.

By letters dated May 17 and September 28, 1979, December 15, 1980, March 25, and May 25, 1982, Virginia Electric and Power Company submitted the inservice inspection programs, revisions,. or additional information related to requests for relief from certain Code requirements determined to be impractical to.

perform on the Surry Nuclear Power Station Unit 1 & 2 Nuclear Plants during the inspection interval.

The programs are based on the requirements of the 1974 Edition through Summer 1975 Addenda of Section XI of the ASME Code.

8403140202 840228 PDR ADOCK 05000280 G

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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 1s contractor, Science Applications, Inc.

The contractor 1s evaluations of the licensee 1s requests for relief and his recommenda-tions are presented in the Technical Evaluation Report (TER) attached.

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:

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

EXAM. CAT.

COMPONENT EXAMINED METHOD EXAMINATION STATUS B2.l B-B Pressurizer Circumferen-Volumetric, Visual for Granted Provided e

tial Shell 5% of Leakage During At least 7% of Length Welds C-5 Length of System Pres-of Accessible Welds is and C-7 Each Weld sure Test Examined Volumetrically and Proposed Alternative is Performed 83.2 B-D Re genera-Nozzle-To-Volumetric Surface Granted (Unit 2 tive Heat Head Welds Only)

Exchanger 83.3 B-F Steam Nozzle-To-Volumetric Volumetric Granted Generator Safe End and Sur-To Extent Welds face Practical and 100%

Surface B4.l B-F Steam Safe End-Volumetric Volumetric Granted Generator To-Pipe and Sur-To Extent Welds face Practical and 100%

Surface B4.5 B-J Class 1 Piping Volumetric Ultrasonic Granted Pipe Welds:

To Extent Unit 1 Practical

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Supplemented ld Leg by Surface Inj. Welds

1. 6 & #7 (b) RTD Return Line Weld.#7

IWB-2600 ITEM NO.

IWB-2500 EXAM. CAT.

SYSTEM OR COMPONENT TABLE 1 CLASS 1 COMPONENTS (CONTINUED)

AREA TO BE REQUIRED EXAMINED METHOD

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(a) Charging Line Weld #11 (b) Cold Leg Injection Welds

1. 4 & #5 (c) RTD Return Weld #7

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(a) Cold Leg Injection Line Welds

1. 3 & #4 (b) RTD Return Line Weld #7 Pressurizer (a) Safety Valve Line Welds #7 & #8 (b) Relief Line Welds

1. 4 & #8 Crossover Leg 90° Elbow LICENSEE PROPOSED ALTERNATIVE EXAMINATION RELIEF REQUEST STATUS e-1 TABLE 1 CLASS 1 COMPONENTS (CONTINUED)

LICENSEE PROPOSED IWB-2600 IWB-2500 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEF REQUEST ITEM NO.

EXAM. CAT.

COMPONENT EXAMINED METHOD EXAMINATION STATUS Unit 2 Loop 1:

C-ol d Leg Injection Line #5 & #7 Loop 3:

Cold Leg Injection Line Welds #3 & #4 Pressurizer (a) Safety Valve Lines Welds #7 & #8 (b) Relief Line Welds #4 & #19 Crossover Leg 90° Elbows B4.6 B-J Piping Branch Pipe Volumetric Volumetric Granted Connection To Extent Welds Pr act i cal Supplemented by Surface TABLE 1 CLASS 1 COMPONENTS (CONTINUED)

LICENSEE PROPOSED IWC-2600 IWC-2520 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEF REQUEST ITEM NO.

EXAM. CAT.

COMPONENT EXAMINED METHOD EXAMINATION STATUS B4.9 B-K-1 Supports Integrally-Volumetric Volumetric Granted Welded To Extent Attachments Practical Supplemented by Surface B5.l B--G-1 Reactor Seal House Volumteric Volumetric Granted Coolant Bolting When Bolting Pump is Removed B5.4 B-K-1 Reactor Integrally-Volumetric Surface and Granted Coolant Welded Visual Pump Attachments Supports

IWC-2600 ITEM NO.

Cl.1 Cl. l Cl. 2 C2.1 IWC-2520 EXAM. CAT.

C-A C-A C-B C-F &

C-G SYSTEM OR COMPONENT Seal Water Return Filter Reactor Coolant Filter Residual Heat Exchanger Class 2 Piping TABLE 2 CLASS 2 COMPONENTS AREA TO BE REQUIRED EXAMINED METHOD Cover Weld-Volumetric ment-To-Shell Weld and Head-To-Shell Weld Cover Weld-Volumetric ment-To-Shel 1 Weld and Head-To-Shell Weld Nozzle-To-Volumetric Vessel Weld Piping Volumetric Welds:

Unit 1

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in Steam By-pass Welds

1. 1, #7, #13, #20 Loop 2 Main Steam Relief Line Welds #12,

1. 13, #16, #18,

1. 20, #22, #29 &

1. 31, (b) Main Steam By-pass Welds #1, #7,

1. 13 & #20 LICENSEE PROPOSED ALTERNATIVE RELIEF REQUEST EXAMINATION STATUS Surface and Granted Visual Surface and Granted Visual Visual Granted During System Pressure Test Ultrasonic Granted To Extent Practical Supplemented by Surface

IWC-2GOO ITEM NO.

IWC-2520 EXAM. CAT.

SYSTEM OR COMPONENT TABLE 2 CLASS 2 COMPONENTS (CONTINUED)

AREA TO BE REQUIRED EXAMINED METHOD (c) SIS Hotleg Weld #15 RHR W 14 11 Line Welds #1, #10,

1. 15, #22 & #27 (b) 8 11

' 10 11 12 11 Lines, Welds

1. 2, #3, #4, #11,

1. 13, #14, #15,

1. 36, #38 & #45 (c) 12 11 & 10 11 Lines, Welds

1. 1, #7, #15,

1. 20 & #27 (ct) 12 11

' 10 11

& 6 11 Lines, Weld #10 SIS W 10 11 Line Weld #9 (b) 10 11 & 6 11 Lines, Welds

1. 6 & #14 Unit 2 LICENSEE PROPOSED ALTERNATIVE EXAMINATION RELIEF REQUEST STATUS I

IWC-2600 ITEM NO.

IWC-2520 EXAM. CAT.

SYSTEM OR COMPONENT TABLE 2 CLASS 2 COMPONENTS (CONTINUED)

AREA TO BE REQUIRED EXAMINED METHOD Loop 1 (a) Mainsteam Line Welds

1. 20, #18, #15,

1. 24, #2, #4,

1. 6, & #8 (b) Mainsteam By-pass Line Welds #12, #7,

1. 19 & #1 Loop 2 (a) Mainsteam Line Welds

1. 2, #4, #6,

1. 8, #11, #12,

1. 18 & #20 (b) Mainsteam By-pass Welds

1. 7, #12, #19

& #1 Loop 3 (a) Mainsteam Line Welds

1. 2, #4, #6,

1. 8, #11, #12

1. 18 & 20 LICENSEE PROPOSED ALTERNATIVE EXAMINATION RELIEF REQUEST STATUS e

TABLE 2 CLASS 2 COMPONENTS (CONTINUED)

LICENSEE PROPOSED IWC-2600 IWC-2520 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEF REQUEST ITEM NO.

EXAM. CAT.

COMPONENT EXAMINED METHOD EXAMINATION STATUS (b) Mainsteam By-pass Welds

1. 7, #12, #19

& #1 RHR 10 11 Line Weld #14 C2.3 C-F &t C-G Class 2 Branch Volumetric Volumetric Granted Piping Pipe-To-Extent Prac-Pipe Welds tical Supple-mented by Surface

e TABLE 3 CLASS 3 COMPONENTS (SEE TABLE 4)

e* TABLE 4 PRESSURE TEST IWB -5000 &

SYSTEM OR COMPONENT IWB.-5000 TEST PRESSURE REQUIREMENT Cl ass 1:

Piping Between Two Check Valves or Two Normally Closed Valves:

(1) Cold-Leg Injec-tion ffom Accumulators Between Check Valves 2-SI-109, 130, 147 and 2-SI-107, 128, 145; Test Lines to Valves HCV-28508, D, F; RHR Return to Valves MOV-27208 and Check Valve 2-RH-47 (2) Hot-Leg Injection Between *check Valves 2-SI-88, 91, 94 and Check Valves 2-SI-238, 239; 240, and Check Valves 2-SI-226, 227.

(3) Cold-Leg Low-Head Injection Between Check Valves 2-SI-79, 82, 85 and Check Valves 2-SI-241, 242, 243; High Head and Boron Injection.to Check Valves 2-SI-235, 236 and 237.

1.02 Times System Operating Pressure (4)

RHR Take-off Line Between Normally Closed Valves MOV-2700 and 2701.

LICENSEE PROPOSED ALTERNATIVE TEST PRESSURE None RELIEF REQUEST STATUS Granted (See enclosure 2 to this letter)

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TABLE 4 PRESSURE TEST (CONTINUED)

SYSTEM OR COMPONENT

• IWC-5000 &

IWD-5000 TEST PRESSURE REQUIREMENT Class 2 Systems That Cannot be Isolated From.Class 1 Systems:

(1)

R.C. Pump-Seal Bypass Lines From Flow Orifice to Valve HCV-2307.

(2)

Hot-Leg Injec-tion Between Check Valves 2-SI-88, 91, 94 and Check Valves 2-SI-238, 239, 240 and Check Valves 2-SI-226 and 227.

• (3)

R.C. Pump-Seal Injection Line From Check Valve 2-CH-~23,

. 333, 349 to Manually Operated Valve 2-CH-294, 297 and 300 (4)

Excess Letdown System From Valve HCV-2201 To HCV-2137 (5)

Letdown Line From LCV-2460 to Orifice Outlet Valves HCV-2200A, B, and C.

Class 3 Systems in CotJtinuous Use 1.25 Times System Design Pressure 1.10 Times System Design Pressure LICENSEE PROPOSED ALTERNATIVE RELIEF REQUEST TEST PRESSURE STATUS Visual Exam-Granted ination at System Nominal Operating Pressure Granted Visual Examina-nation at Normal "Operating Pres-sure (See enclosure 2 to this

• 1 etter)

SYSTEM OR COMPONENT Class 1 and Class 2 Piping Welds Calibration Standard TABLE 5 ULTRASONIC EXAMINATION TECHNIQUE REQUIREMENT 1974 Edition of Section XI, Appendix I or Article 5 of Section V; Recording and evaluation of Indications Which Produce a Response Equal to or Greater Than 20% of Reference I-3121 of 1974 Edition of Section XI States That the Material From Which The Block is Fabricated Shall be From One of the Following:

(1) Component LICENSEE PROPOSED ALTERNATIVE TEST PRESSURE RELIEF REQUEST STATUS Winter 1975 Addenda Approved of Section XI will be Used for Ultrasonic Examination of Piping Systems With the Following Changes:

(1) Non-geometric indica-tions 50% of DAC or greater shall be recorded.

(2)

An indication 100% of DAC or greater shall be in-vestigated by a level II or Level III examiner to the extent necessary to determine the size, shape, identity and Location of the Reflector and Evaluated in Accordance with the acceptance requirements of Sect ion XI.

(3)

Any non-geometric in-dication 20% of DAC or Greater, discovered during the ultrasonic (UT) examina-tion shall be evaluated by a Level II or Level III exam-iner to the extent necessary to determine the shape, identity and location of the reflector.

As an alternative for Approved I-3121 of Section XI:

11Calibration blocks required for the examina-tion of welds in ferritic vessels 2-1/2 inches thick and over will be fabricated from material of the same specification, product form, and heat treatment as one of

SYSTEM OR COMPONENT TABLE 5 e

ULTRASONIC EXAMINATION TECHNIQUE (CONTINUED)

REQUIREMENT Nozzle Dropout, (2) Component Prolongation, or (3) Fabricated From a Material of a Specification Included in Appli-cable Examination Volumes of the Com-ponent LICENSEE PROPOSED ALTERNATIVE TEST PRESSURE The materials being joined as allowed by article T-434.1 in the Winter, 1976 Addenda of Section V of the ASME Boiler and Pressure Vessel Code.

11 RELIEF REQUEST STATUS

e Based on the review summarized, the staff concludes that relief granted from the examination reguirements and alternate methods in this document gives reasonable assurance of the pipiQg and component pressure boundary and support structural integrity, that granting relief where the Code requirements 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 pow~r level and will not result in any significant environmental 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 declaration and environmental impact a~praisal need not be prepared in connection with the grant of this relief.

Dated: Eebruary 28, 1984

• Contributor; George Johnson, METB