ML20155J629
| 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: |
| 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.
s605270126 860512 DR ADOCK 0500 2
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 Proposed IWB-2500-1 IWB-2500-1 System or Area to be Required Alternative Relief Request Item No.
Exam. Cat.
Component Examined Method Exam Status B3.120 4-0 Pressurizer Nozzle Inside Volumetric None Granted Provided Radius Section Visual Exam (VT-2) is Performed During Code-Required m
System Pressure j
Tests 82.51, B2.-5?
8-8 Regenerative B2.51:
Volumetric Visual Exam Granted
& B2.60 Heat Circumfer-(VT-2) During Exchanger ential Shell Code-Required (Primary
- Welds, System J /
Side)
B2.52:
Leakage &
Longitudinal
'Shell Welds, Hydrostatic Tests
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82.60:
i Tubesheet-to-Shell Welds 83.140 B-D Steam;'
Nozzle Volumetric None Granted Provided Generator Inside (Primary Radius Visual Exam Side)
Section (VT-2) is performed during Code-Required 1
System Pressure s
Tests r
i TABLE 1 (continued)
Licensee Proposed IWB-2500-1 IWB-2500-1 System or Area to be Required Alternative Relief Request Item No.
Exam. Cat.
Component 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 Volumetric Surface Granted Provided 1
Generator Size > 4 in.,
& Surface Volumetric Exam Nozzle-to-is Performed j
Safe End Butt to Extent Welds Practical B9.10, B-J Piping B9.10:
89.10:
Code-Required Not Granted 89.20, B9.30 Pressure Nominal Surface &
Exam to t
& B9.40 Boundary Pipe Size Volumetric, Extent
> 4 in.,
B9.20:
Practical 4
B.9.20:
- Surface, i
Nominal B9.30:
j P1pe Size Nominal 1
< 4 in.,
Size > 2 j
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 Proposed IWB-2500-1 IWB-2500-1 System or Area to be Required Alternative Relief Request Item No.
Exam. Cat.
Component 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:
812.10:
Code-Required Granted Provided B12.20
& B-L-2 Pump Casing Volumetric, Visual (VT-3)
Surface Exam is
- Welds, 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 Granted x
When Bolts
& Studs are Removed
. TABLE 2 CLASS 2 COMP 0NENTS i
Licensee Proposed IWC-2500 IWC-2500-1 System or Area to be Required Alternative Relief Request Item No.
Exam. Cat.
Component Examined Method Exam Status C2.22 C-B Steam Nozzle Inside Volumetric None Granted Provided Generator Radius Section (Shell Side)
Visual Exam (VT-2 is Performed During Code-Required System Pressure Tests i
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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 Alternative Component Pressure Requirement Test Pressure Relief Request Status Class 2 IWC-5222:
T'est Pressure at (Chemical &
Granted System Hydrostatic Operating Pressure Volume control Test Pressure Shall Charging be at Least 1.25 Times System, Seal System Pressure for t
Injection Systems with Design System., &
Temperature Above Letdown 200*F System) 1 i
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