ML20137K537
| ML20137K537 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 01/09/1986 |
| From: | Butler W Office of Nuclear Reactor Regulation |
| To: | Spangenberg F ILLINOIS POWER CO. |
| References | |
| NUDOCS 8601240127 | |
| Download: ML20137K537 (4) | |
Text
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NUCLEAR REGULATORY COMMISSION g
.t WASHINGTON, D. C. 20555
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JAN 0 01986 Docket No. 50-461 Mr. Frank A. Spangenberg Manager - Licensing and Safety Clinton Power Station P.O. Box 306 Mail Code V920 Clinton, Illinois 61727
Dear Mr. Spangenberg:
SUBJECT:
SAFETY-RELATED INSTRUMENT TUBING AND SUPPORTS PROGPAM FOR CLINTON POWER STATION, UNIT 1 The NRC staff has completed its review of your request for approval of an instrument tubing and supports program for application in safety-related systems of the Clinton Power Station, Unit 1 as identified in your letter dated July 18, 1985. The proposed program was modified as a result of NRC staff comments and resubmitted in your letter dated August 23, 1985. Excluded from the instrument tubing and supports program is the instrument line from the socket weld on the root valve to the process line which is constructed to Section III, Class 2 or Class 3 of the ASME Boiler and Pressure Vessel Code.
Use of the roposed instrument tubing and supports program is permitted by NCA-1130 (C.
Your proposed program is similar to programs previously approved for the River Bend, Nine Mile Point 2, Millstone 3, and Beaver Valley 2 stations and applies to ASME Section III, Class 2 and Class 3 instrument lines outside the contain-ment extending from a root valve to the sensing instrumentation. The instrument lines are stainless steel and are one-half inch or less in diameter.
At Clinton, the proposed instrument tubing and supports program differs from the River Bend end similar programs as follows:
(1) The program has been essentially completed and the installed tubing is in conformance with Secticn III of the Code, except for the Code Symbol N-stamp and completion of the N-5 Data Reports.
Tubing installati n includes necessary hold points and ANI inspection as required by the Code; ano (2) Except for instrument lines connected to the reactor coolant pressure boundary (RCPB), all other instrument lines at Clinton beyond the root valve are one classification less than the system to which they are attached.
These lines are not less than Quality Group C if attached to systems classified higher than Quality Group D.
An exception involves those lires that are used only during testing and are isolated by two root valves during normal operation.
In this case, the line from the root valve to the sensing instrumentation is Quality Group D or above.
8601240127 860109
{DR ADOCK 05000461 PDR
. The installation of the instrument tubing program discussed in Item (1) exceed the requirements of previously approved programs such as the River Bend program and is acceptable without revision. With respect to the classification of the instrument lines discussed in Item (2), other utilities have met the staff position that instrument lines beyond the root valve shall be the same classifi-cation as the system to which they are attached, with the exception of those lines attached to the RCPB and lines that are only used during testing and are isolated by twc root valves during normal operation.
In the latter case, the line from the root valve to the sensing instrumentation may be Quality Group D.
In the classification system for the Clinton instrument tubing program for Quality Group B systems, the instrument tubing is downgraded to Quality Group C beyond the root valve. This downgrading of the instrument tubing beyond the root valve for Quality Group B systems-is currently under review as a separate issue and is considered to be an open iten.
It is anticipated that the results of your recently initiated inspection progran for instrument lines located in the Quality Group A process system lines, to upgrade these instrument lines from Quality Group C to Quality Group B prior to fuel load, will be directly applicable to the resolution of this item.
In the event that the results of this upgrade program indicate that a reinspection of the instrument tubing in the Quality Group C lines is required, this reinspection could be deferred until prior to startup following the first refueling outage.
Based on our review, we conclude that the instrument tubing and supports progran described in your submittals of August 23, 1985 including Attachment A; July 18, 1985 including Attachment B and C; and letters dated October 18, 1985 and January 8, 1986, is acceptable. Compliance with these requirements provides a quality level that is commensurate with the importance of the safety functions of the attached fluid systems. The FSAR should be revised accordingly.
If you have any questions related to this issue please contact the staff's project manager for your application.
Sincerely,
/
Walter R. Butler, Director BWR Project Directorate 110. 4 Division of BWR Licensing cc: See next page
d
- Mr. Frank A. Spangenberg Clinton Power Station Illinois Power Company Unit I cc:
Mark Jason Jean Foy, Esquire Assistant Attorney General 511 W. Nevada Public Utilities Division Urbana, Illinois 61801 Office of the Attorney General State of Illinois Center Pichard B. Hubbard 100 West Randolph Street - 12th Floor Vice President Chicago, Illinois 60601 Technical Associates 1723 Hamilton Avenue - Suite K Mr. D. P. Hall San Jose, California 95125 Vice President Clinton Power Station P. O. Box 678 Clinton, Illinois, E1727 Mr. D. C. Shelton Manager-Nuclear Station Engineering Opt.
Clinton Power Station P. O. Box 678 Clinton, Illinois 61727 Sheldon Zabel, Esquire Schiff, Hardin & Waite 7200 Sears Tower 233 Wacker Drive Chicago, Illinois 60606 Resident Inspector U. S. Nuclear Regulatory Commission RR 3, Box 229 A Clinton, Illinois 61727 Mr. R. C. Heider Project Manager Sargent & Lundy Engineers 55 East Monroe Street Chicago, Illinois 60603 Mr. L. Larson Project Manager General Electric Company 175 Curtner Avenue, h/C 395 San Jose, California 95125 Regional Administrator, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137
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The installation of the instrument tubing prcgram discussed in Item (1) exceed the requirements of previously approved programs such as the River Bend program and is acceptable without revision. With respect to the classification of the instrunent lines discussed in Item (2), other utilities have met the staff l
position that instrument lines beyond the root valve shall be the same classifi-cation as the system to which they are attached, with the exception of these lines attached to the RCPB and lines that are only used during testing and are isolated by two root valves during normal operation.
In the latter case, the line from the root valve to the sensing instrumentation may be Quality Group D.
i In the classification system for the Clinton instrement tubing program for Quality Group B systems, the instrt. ment tubing is downgraded to Quality Group C beyond the root valve. This downgradino of the instrument tubing beyond the root valve for Quality Group B systems is currently under review as a separate issue and is considered to be an open item.
It is anticipatcd that the results of your recently initiated inspection program for instrurent lines located in the Quality Greup A process system lines, to upgrace these instrument lines from Quality Group C to Quality Grcup B prior to fuel load, will be directly applicable to the resolution of this itua.
In the event that the results of this upgrade program indicate that a reinspection of the instrument tubirg in the Quality Group C lines is required, this reinspection could be deferred until prior to startup following the first refueling outage.
i Based on our review, we conclude that the instrument tubing and supports program l
described in your subnittals of August 23, 1985 including Attachment A; July 18, j
1985 including Attach' rent B and C; and letters dated October 18, 1985 and January l
8, 1986, is acceptable. Compliance with these requirements provices a quality lesel that is conunensurate with the d rportance of the safety functions of the attached fluid systens. The FSAR should be revised accordingly.
If you have dny questions related to this issue please contact the staff's project manager for your application.
Sincerely, 1
o w,
'!by i
Walter R. Butler, Director EKR Project Directorate No. 4 Division of BWR Licensing l
cc: See next page DISTRIBUTION Docket File.
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