ML19249F301
| ML19249F301 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 09/20/1979 |
| From: | Pappas H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 7910110287 | |
| Download: ML19249F301 (2) | |
Text
7~ IC 8 8800 UNITED STATES g,.
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'f 799 ROOSEVELT RO AD C LEN ELLYN, ILLINOIS 40137 SEP 2 01979 MEMORANDDI FOR: Those on Attached List FROM:
Helen Pappas, Chief, Administrative Branch
SUBJECT:
IE INFORMATION NOTICE NO. 79-22 The attached IE Information Notice Nc. 79-22, titled, " Qualification of Control Systems" was sent to the following licensees on September 14, 1979, for information:
American Electric Power Service Corporation Indiana and Michigan Power Company D. C. Cook 1, 2 (50-315, 50-316)
Cincinnati Cas & Electric Company Zimmer (50-358)
Cleveland Electric Illuminating Company Perry 1, 2 (50-440, 50-441)
Commonwealth Edison Company Braidwood 1, 2 (50-456, 50-457)
Byron 1, 2 (50-454, 50-455)
Dresden 1, 2 (50-10, 50-237, 50-249)
La Salle 1, 2 (50-373, 50-374)
Quad-Cities 1, 2 (50-254, 50-265)
Zion 1, 2 (50-295, 50-304)
Consumers Power Company Big Rock Point (50-15)
Midland 1, 2 (50-329, 50-330)
Palisades (50-255)
Dairyland Power Cooperative LACBWR (50-409)
Detroit Edison Company Fermi 2 (50-341) n')o b <-
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Those on Attached List SEP ' r 1979 Illinois Power Company Clinton 1, 2 (50-461, 50-462)
Iowa Electric Light & Power Company Duane Arnold (50-331)
Northern Indiana Public Service Company Bailly (50-367)
Northern States Power Company Monticello (50-263)
?rairia Island 1, 2 (50-282, 50-306)
Public Service of Indiana Marble Hill 1, 2 (50-546, 50-547)
Toledo Ed'. son Company Davir -Besse 1 (50-346)
Union Electric Company callaway 1, 2 (50-483, 50-486)
Wisconsin Electric Power Company Point Beach 1, 2 (50-266, 50-301)
Wisconsin Public Service Corporation Kewaunee (50-305:
The Ohio Edison Company Erie 1, 2 (50-580, 50-581)
Sincerely, bMA
&NA Helen Pappas, Chief Administrative Branch
Enclosures:
1.
IE Information Notice No. 79-22 2.
List of IE Information Notices Issued in Last Six Months cc w/ encls:
Central Files Reproduction Unit NRC 20b Local PDR NSIC
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I I/ v V
D. W. Kane, Sargent and Lunu,
TIC kt 20 IW Addressees Memorandum dated.1.s 1979
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IE Files AD/FFMSI/IE NMSS/FCSL (AD)
KMSS/FCWM (AD)
NMSS/FCMS (AD)
MPA/ DIS Central Files Repro Unit PDR NSIC i E/6 054 o
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M Accession No: 79082201E
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SSINS: 6870 UNITED STATES 3
NUCLEAR REGULATORY COMMISSION
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0FFICE OF INSPECTION AND ENFORCEMENT
_, a WASHINGTCN, D.C.
20555 September 14, 1979 IE Information Notice No. 79-22 QUALIFI GTION OF CONTROL SYSTEMS Public Service Electric and Gas Company notified the NRC of a potential unreviewed safety question at cheir Salem Unit 1 facility. This notification was based on a continuing review by Westinghouse of the environmental qualifications of equipment that they supply for nuclear steam supply systems. Based on the present status of this effort, Westinghouse has infomed their customers that the performance of non-cafety grade equipment subjected to an adverse environment could impact the protective functions performed by safety grade equipment. These non-safety grade systems include:
Steam generator power operated relief valve control system Pressurizer power operated relief valve control system Main feedwater control system Automatic rod control system These systems could potentially malfunctioa due to a high energy line break inside or outside of containment. NRC is also concerned that the adverse environment could also give erroneous information to the plant operators.
Westinghouse states that. the consequences of such an event could possibly be more limiting than results presented in Safety Analysis Reports, however, Westingbouse also states that the severity of the results can be limited by operator actions together with operating characterisitics of the safety systems. Further, Westinghouse has recomended to their customers that they review their systems to detemine whether any unreviewed safety questions exist.
This Information Notice is provided as an early notification of a possibly significant matter. It it expected that recipients will review the infomation for possible applicability to their facilities. No specific action or response is requested at this time. If NRC evaluations so indicate, further licensee actions may be requested or required. If you have questions regarding this mattei please contact the Director of the appropriate NRC Regional Office.
No written response to this Infomation Notice is required.
P00R ORGIUL
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IE Information Not. ice No. 79-22 Enclosure September 14, 1979 Pr.ge 1 of 2 LISTING OF IE INFORMATION NOTICES ISSUED IN LAST SIX M0hTHS Information Subject Date Issued To Notice No.
Issued 79-05 Use of Improper Materials 3/21/79 All power reactor in Safety-Re9 ted Components facilities with an OL or CP 79-06 Stress Analysis of 3/23/79 All Holders of Safety-Related Piping Reactor OL or CP 79-07 Rupture of Radwaste Tanks 3/26/79 All power reactor facilities with an OL or CP 79-08 Interconnection of 3/28/79 All power reactor Contaminated Systems wit facilities with an Service Air Systems Useu OL and Pu Processing As the Source of Breathing fuel facilities Air 79-09 Spill of Radioactively 3/30/79 All power reactor Contaminated Resin facilities with an OL 79-10 Nonconforming Pipe 4/16/79 All power reactor Support Struts facilities with a CP 79-11 Lower Reactor Vessel Head 5/7/79 All holders of Reactor Insulation Support Problem OLs and cps 79-12 Attempted Damage to New 5/11/79 All Fuel Facilities Fuel Assemblies Research Reactors, and Power P.eactors with an OL or CP 79-13 Indication of Low Water 5/29/79 All Holders of Reactor level in the Oyster Creek OLs and cps Reactor s 79-14 NRC Position of Electrical 6/11/79 All Power Reactor Cable Support Systems Facilitie-vith a W
l Deficient (l Procedures 6/7/79 All Holders of Reactor 79-15 OLs and cps
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=5 IE Information Notice No. 79-22 Enclosure September 14, 1979 Page 2 of 2 LISTING OF IE INFORMATION NOTICES ISSUED IN 1979 Information Subject Date Issued To Notice No.
Issued 9
79-16 Nuclear Incident at Three 6/22/79 All Research Reactors Mile Island and Test Reactors with OLs 79-17 Source Holder Assembly Damage 6/20/79 All Holders of Reactor Damage From Hisfit Between OLs and cps Assembly and Reactor Upper Grid Plate 79-18 Skylab Reentry 7/5/79 All Holders ?! Reactor OLs 79-19 Pipe Cracks In Stagnant 7/17/79 All Holders of Reactor Borated Water Systems At OLs and cps PWR Plants 79-20 NRC Enforcement Policy 8/10/79 All Holders of Reactor NRC Licensed Individuals OLs and cps and Productic Licensees with Licensed 2
Operators 79-21 Transportation and Comercial 9/7/79 All power and research Burial of Radioactive Material reactors with OL's 3]0'l DR;8lNAL
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