ML14184A486
| ML14184A486 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 08/31/1983 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML14184A485 | List: |
| References | |
| NUDOCS 8309260608 | |
| Download: ML14184A486 (12) | |
Text
l REGO UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO REQUESTS FOR RELIEF FROM INSERVICE INSPECTION REQUIREMENTS CAROLINA POWER AND LIGHT COMPANY H. B. ROBINSON STEAM ELECTRIC PLANT UNIT 2 DOCKET NO. 50-261 INTRODUCTION Technical Specification 4.2.1 for the H. B. Robinsion Steam Electric Plant Unit 2 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 Vess-el 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 March 22 and September 17, 1982, Carolina Power and Light 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 H. B. Robinson Steam Electric Plant Unit 2 during the inspection interval.
The program is based on the 1977 Edition through Summer 1978 Addenda of Section XI of the ASME Code, and covers the 120-mohth inspection interval from March 7, 1981 to March 7, 1991.
8392608 830831 PDR ADOCK 05000261 PDR
-2 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, Inc.
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 agrees with the e9aluations 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 B1.22 B-A Reactor Closure Volumetric Visual Exam-Relief not Vessel Head ination at Required Peel End of Segment-Interval to-Disc During Weld System Hydro Test and at Each Outage B5.10 B-F Piping Nozzle-to-100%
Examine to GRANTED Pressure Safe End Volumetric Extent Per Boundary Welds and Surface mitted by Access B9.10 B-J Piping Circum-Surface Full Volu-GRANTED ferential &
and metric in Longitudi-Volumetric Lieu of nal Welds, Inner 1/3 of 4" and Pipe &
Greater Surface B9.31 B-J Piping Branch Surface Full Volu-GRANTED Pipe and metric in Connec-Volumetric Lieu of tion Welds Inner 1/3 Greater of Pipe than 2" NPS
& Surface
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 B9.11 B-J Piping 90 - Degree Surface Visual Relief From Elbows in and During Volumetric the Cross-Volumetric Pressure Examination over Leg Tests Granted; of RCS Relief From Surface Examination not Granted 89.11 B-J Piping Circumferen-Surface Hydro-Granted if First tial Butt and static Weld Beyond Weld-to-150 Volumetric Test Biological Elbow in RCS Shield is Cold Leg Volumetrically Examined B10.10 B-K-1 Piping Attachment Volumetric Surface GRANTED Integrally Fillet Examina Welded Welds tion of Attach-Attach ments
- ments, Volumetric Examina tion of Base Metal B10.20 B-K-1 Pump Reactor Volumetric Surface GRANTED Integral Coolant Attach-Pump ments Supports
TABLE 2 CLASS 2 COMPONENTS LICENSEE PROPOSED IWC-2600 IWC-2520 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEF REQUEST ITEM NO.
EXAM. CAT.
COMPONENT EXAMINED METHOD EXAMINATION STATUS C1.30 C-A Pressure Tubesheet-Volumetric Volumetric GRANTED Vessels to-Shell and Surface Weld Where Prac tical C2.20 C-B Nozzles in Nozzle Welds Volumetric Full Volu-GRANTED Vessels in Vessels and metric in Over 1/2" Surface Lieu of Nominal Inner 1/3 Thickness of Pipe &
Surface C2.20 C-B RHR Heat Nozzle Surface Visual GRANTED Exchangers Welds and During Volumetric System Hydro Tests C5.10 C-F Piping Circum-Surface Full Volu-GRANTED ferential metric in and Longi-Lieu of tudinal Inner 1/3 of Piping Welds Pipe 1/2" or Less Nominal Wall Thickness
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 C5.20 C-F Piping Circum-Surface Full Volu-GRANTED ferential and metric in and Longi-Volumetric Lieu of tidinal Inner 1/3 Piping of Pipe Welds over and 1/2" Nominal Surface Wall Thickness C5.10 C-F Piping Circum-Surface Visual NOT GRANTED ferential and Longi tudinal Piping Welds 1/2" or Less Nominal Wall Thickness C5.20 C-F Piping Circum-Surface Surface NOT GRANTED ferential and and Longi-Volumetric tudinal Piping Welds Over 1/2" Nominal Wall Thickness C5.30 C-F Piping Branch Pipe Surface Visual NOT GRANTED Connection Welds
TABLE 3 CLASS 3 COMPONENTS LICENSEE PROPOSED IWC-2600 IWC-2520 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE RELIEF REQUEST ITEM NO.
EXAM. CAT.
COMPONENT EXAMINED METHOD EXAMINATION STATUS
[NO RELIEF REQUESTS]
TABLE 4 PRESSURE TESTS IWA-5000, IWB-5000, IWC-5000 &
IWO-5000 TEST LICENSEE PROPOSED RELIEF SYSTEM OR PRESSURE ALTERNATE REQUEST COMPONENT REQUIREMENT TEST PRESSURE STATUS
[NO RELIEF REQUESTS]
TABLE 5 ULTRASONIC EXAMINATION TECHNIQUE LICENSEE PROPOSED RELIEF SYSTEM OR ALTERNATIVE REQUEST COMPONENT REQUIREMENT EXAMINATION METHOD STATUS
[NO RELIEF REQUESTS]
TABLE 6 GENERAL RELIEF REQUESTS ALL CLASSES/COMPONENTS RELIEF SYSTEM OR LICENSEE REQUEST COMPONENT REQUIREMENT ALTERNATE STATUS
[NO RELIEF REQUESTS]
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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 document give reasonable assurance of the piping 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 power 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 appraisal need not be prepared in connection with the grant of this relief.
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CONCLUSION 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 endangered by operation in the proposed manner, and (2) such activities will be conducted in compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public.
Date.:
August 31, 1983