ML20155J629

Safety Evaluation Supporting Util 840409 Request for Relief from Section Xi,Asme Code Requirement for Inservice Exam of ASME Code Class 1,2 & 3 Components,Based on Encl Rept SAIC-84/1662

ML20155J629
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	05/12/1986
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20155F819	List: ML20155F814 ML20155J594 ML20155J629
References
NUDOCS 8605270126
Download: ML20155J629 (9)

Text

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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO REQUESTS FOR RELIEF FROM INSERVICE INSPECTION REQUIREMENTS CONNECTICUT YANKEE ATOMIC POWER COMPANY HADDAM NECK PLANT DOCKET NO. 50-213

1.0 INTRODUCTION

Technical Specification 4.10 for the Haddam Neck Plant 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 design, component geometry, and materials of construction.

Thus,10 CFR 50.55a(g)(6)(f) authorizes the Comission to grant relief from those requirements upon making the necessary findings.

By letter dated April 9,1984, Connecticut Yankee Atomic Power Company submitted its updated inservice inspection program and information related to requests for relief from certain Code requirements determined to be impractical to perform on the Haddam Neck Plant beginning with the third period during the second ten-year inspection interval. The updated program is based on the requirements of the 1980 Edition, through Winter 1980 Addenda, of Section XI of the ASME Code. These will remain in effect until January 1, 1988, unless the program is modified or changed prior to the interval end date.

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2.0 EVALUATION Requests for relief from the requirements of Section XI which have been detennined to be impractical to perform have been reviewed by the staff's contractor, Science Applications International Corporation. The con- )

tractor's evaluations of the licensee's requests for relief and his '

recomendations are presented in the attached technical evaluation report (Attachment 1). The staff has reviewed the TER and agrees with the evaluations and recommendations. A sumary of the determinations made by the staff is presented in Tables 1 through 5.

3.0 CONCLUSION

Based on the review summarized in the technical evaluation report, the staff concludes that relief granted from the examination and testing requirements and alternate methods imposed through this document give {

reasonable assurance of the piping and component pressure boundary and support structural integrity, that granting relief where the Code

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requirements are impractical is authorized by law and will not endanger life or property, or the comon defense and security, and is otherwise in the public interest considering the burden that could resul't if they were imposed on the facility.

Dated: May 12,1986

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TABLE 1 CLASS 1 COMPONENTS s

Licensee IWB-2500-1 IWB-2500-1 System or Proposed Item No. Area to be Required Alternative Exam. Cat. Component Examined Relief Request Method Exam Status B3.120 4-0 Pressurizer Nozzle Inside Volumetric None Radius Granted Provided

• Section Visual Exam (VT-2) is .

Performed During m

Code-Required System Pressure j Tests .

82.51, B2.-5? 8-8 Regenerative B2.51: Volumetric Visual Exam

& B2.60 Heat Granted

• Circumfer- (VT-2) During Exchanger ential Shell (Primary Code-Required Welds, System Side) B2.52: Leakage &

• J/

Longitudinal , Hydrostatic ' ,

'Shell Welds, Tests ~

82.60: i Tubesheet- _

to-Shell -

Welds -

83.140 B-D Steam;' , Nozzle Volumetric None Generator Inside '

Granted Provided (Primary Radius Visual Exam Side) Section (VT-2) is performed .

during Code-Required s

1 System Pressure Tests

,. r

TABLE 1 (continued)

Licensee IWB-2500-1 Proposed IWB-2500-1 System or Area to be Required Alternative Item No. Exam. Cat. Component Relief Request Examined Method Exam Status B3.150 B-D Regenerative Nozzle-to-Volumetric Visual Exam Granted Heat Vessel Welds (VT-2) During Exchanger Code-Required (Primary System Leakage Side) & Hydrostatic Tests

! B5.30 B-F Steam Nominal Pipe 1 Volumetric Surface Granted Provided Generator Size > 4 in., & Surface Volumetric Exam j

Nozzle-to- is Performed Safe End Butt to Extent -

Welds Practical

. B9.10, B-J Piping B9.10:

t 89.20, B9.30 89.10: Code-Required Not Granted

' Pressure Nominal Surface & Exam to

& B9.40 Boundary Pipe Size Volumetric, Extent 4

> 4 in., B9.20: Practical B.9.20: Surface, i

j Nominal B9.30:

1 P1pe Size Nominal j

< 4 in., Size > 2

! 89.30: in.,

Branch Pipe Surface &

Connection Volumetric; l Welds, Nominal Pipe B9.40: Size < 2 in.,

Socket Welds Surface,

[ B9.40:

Surface t

i i

TABLE 1 (continued)

Licensee IWB-2500-1 Proposed IWB-2500-1 System or Area to be Required Item No. Exam. Cat. Component Alternative Relief Request -

Examined Method Exam Status B6.180 B-G-1 Pumps Bolts & Studs Volumetric Surface Granted Provided Exam When Bolting is Bolts & Studs Removed From a are Removed Pump During Interval B12.16 & B-L-1 Pumps B12.10:

B12.20 812.10: Code-Required Granted Provided

& B-L-2 Pump Casing Volumetric, Welds, Visual (VT-3) Surface Exam is B12.20: Exam if a Pump Performed on B12.20: Visual, is Disassembled External Surface Pump Casing VT-3 for Mainte- of Pump Casing nance, Welds, and Vibration Code-Required Monitoring, Exam is and Visual Performed (VT-2) Exam if a Pump is of Pump Disassembled Casings During for System Leakage Maintenance

• & Hydrostatic Tests B6.210 B-G-1 Valves Bolts & Studs Volumet'ric Surface E'am x Granted When Bolts

& Studs are Removed

TABLE 2 CLASS 2 COMP 0NENTS i .

Licensee IWC-2500 Proposed

'; IWC-2500-1 System or Area to be Required Item No. Exam. Cat. Component Alternative Relief Request Examined Method Exam Status C2.22 C-B Steam Nozzle Inside Volumetric None Generator Radius Section Granted Provided (Shell Side) Visual Exam (VT-2 is Performed During Code-Required System Pressure Tests i

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3 O q P e

- E M R 7 L O

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TABLE 4 COMPONENT SUPPORTS .

No Relief Requests G

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TABLE 5 PRESSURE TESTS IWA-5000 IWB-5000 IWC-5000 & Licensee Proposed System or IWD-5000 Test Component Pressure Requirement Alternative Relief Request Test Pressure Status Class 2 IWC-5222:

(Chemical & System Hydrostatic T'est Pressure at Granted Volume control Operating Pressure Charging Test Pressure Shall System, Seal be at Least 1.25 Times

• System Pressure for t Injection Systems with Design System., & Temperature Above Letdown 200*F System) 1 i

i i

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