ML14192A562
| ML14192A562 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 10/24/1984 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML14192A561 | List: |
| References | |
| NUDOCS 8501290553 | |
| Download: ML14192A562 (9) | |
Text
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO REQUESTS FOR RELIEF FROM INSERVICE INSPECTION REQUIREMENTS CAROLINA POWER & LIGHT COMPANY H.B. ROBINSON STEAM ELECTRIC PLANT UNIT NO. 2 DOCKET NO. 50-261 INTRODUCTION Technical Specification 4.2.1 for the H.B. Robinson Unit No. 2 facility 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 require ments 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 January 18, 1983 and April 30, 1984, Carolina Power & Light Company submitted an 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 Unit 2 facility during the inspection interval.
The program is based on the requirements of the 1977 Edition through Summer 1978 Addenda of Section XI of the ASME Code and covers the second ten-year inspection interval, March 7, 1981 to March 7, 1991, unless the program is changed or modified prior to the end of the interval.
EVALUATION Requests for relief from the requirements of Section XI which have been deter mined to be impractical to perform have,been reviewed by the Staff's contractor, 10/24/84 1
ROBINSON 2 SER ISI REQUIREMENT 8501290553 850111 PDR ADOCK 05000261 0 _PDR
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 evaluations and recommendations. A summary of the determinations made by the staff is presented in the following tables:
10/24/84 2
ROBINSON 2 SER ISI REQUIREMENT
TABLE 1 CLASS 1 COMPONENTS LICENSEE PROPOSED RELIEF IWB-2500-1 IWB-2500-1 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE REQUEST ITEM NO.
EXAM. CAT. COMPONENT EXAMINED METHOD EXAM STATUS B1.21 B-A Reactor Circumfer-Volumetric Visual Granted Vessel ential During Closure Weld Leakage Head Tests B.3.120 B-D Pressurizer Nozzle Volumetric None Not Granted Inner Radii B3.150 B-D Regener-Nozzle-to-Volumetric Best Granted ative Vessel Effort Heat Welds Volumetric Exchanger and Surface B3.140 B-D Steam Nozzle Volumetric None Granted Generators Inside Radii B3.160 B-D Regenera-Nozzle Volumetric None Granted tive Heat Inside Exchanger Radii B5.10 B-F Reactor Nozzle-Volumetric Volumetric Granted Vessel to-Safe and Surface and Partial Nozzle End Weld Surface B5.50 B-F Piping Safe-End Volumetric Volumetric Granted Welds and Surface and Partial Surface B9.10 B-J Piping Welds Volumetric Full Granted
>4-inch and Surface Volumetric NPS B9.31 B-J Branch Connection Volumetric Full Granted Piping Welds Volumetric
>2-inch NPS 10/24/84 3
ROBINSON 2 SER ISI REQUIREMENT
TABLE 1 (Continued)
CLASS 1 COMPONENTS LICENSEE PROPOSED RELIEF IWB-2500-1 IWB-2500-1 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE REQUEST ITEM NO.
EXAM. CAT. COMPONENT EXAMINED METHOD EXAM STATUS 89.12 B-J Piping Longitu-Volumetric
-Surface Granted dinal and Surface and Welds in Visual 900 Elbows of Cross over Leg 89.11 &
B-J Piping Circumfer-Volumetric Hydrostatic Granted B9.12 ential and and Surface Test Longitu dinal Welds in 150 Elbows rn Reactor Coolant Cold Legs 810.10 B-K-1 Integrally Attachment Volumetric Volumetric Granted Welded Welds or Surface Exam of Attach-As Appli-Pipe Base ments cable Metal and Surface Exam of Integrally Welded Attachments 812.10 B-L-1 Reactor Casing Volumetric Volumetric Relief Coolant Welds Is Not Pumps Necessary 810.20 B-K-1 Reactor Integrally Volumetric Volumetric Granted Coolant Welded Or Surface Pumps Supports As Appli cable 10/24/84 4
ROBINSON 2 SER ISI REQUIREMENT
TABLE 2 CLASS 2 COMPONENTS LICENSEE PROPOSED RELIEF IWC-2500-1 IWC-2500-1 SYSTEM OR AREA TO BE REQUIRED ALTERNATIVE REQUEST ITEM NO.
EXAM. CAT. COMPONENT EXAMINED METHOD EXAM STATUS C1.30 C-A Pressure Tube Sheet 100%
.Partial Granted Vessels
-to-Shell Volu-Volumetric Welds metric Supplemented By Surface C2.20 C-B RHR Heat Nozzle-Surface Visual Granted Exchangers to-Vessel and Volu-During Provided Welds metric Hydrostatic Surface Tests Examination Is Performed On Reinforce ment Ring Covering Nozzle-To Vessel Weld C5.21 C-F Branch Connection Surface Full Volu-Granted Piping Welds metric 10/24/84 5
ROBINSON 2 SER ISI REQUIREMENT
TABLE 3 CLASS 3 COMPONENTS (NO RELIEF REQUESTS) 10/22/84 6
H.B. Robinson 2 SER-ISI Rqmts
TABLE 4 PRESSURE TESTS IWA-5000 IWB-5000 IWC-5000 &
LICENSEE PROPOSED RELIEF SYSTEM OR IWD-5000 TEST ALTERNATIVE REQUEST COMPONENT PRESSURE REQUIREMENT TEST PRESSURE STATUS (NO RELIEF REQUESTS) 10/22/84 7
H.B. Robinson 2 SER-ISI Rqmts
TABLE 5 ULTRASONIC EXAMINATION TECHNIQUE LICENSEE PROPOSED RELIEF SYSTEM OR ALTERNATIVE REQUEST COMPONENT REQUIREMENT CALIBRATION BLOCK STATUS REACTOR VESSEL SA-302 Gr. B SA-533 Gr. B Granted And PRESSURIZER and SA-336 For In Lieu of SA-302 CALIBRATION Reactor Vessel Gr. B and SA-508 BLOCKS MATERIAL Blocks SA-302 Gr. B In Lieu of SA-336 For Pressurizer 10/24/84 8
ROBINSON 2 SER ISI REQUIREMENT
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.
10/22/84 9
H.B. Robinson 2 SER-ISI Rqmts