ML19254D511
| ML19254D511 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 10/15/1979 |
| From: | Baer R Office of Nuclear Reactor Regulation |
| To: | Parker W DUKE POWER CO. |
| References | |
| NUDOCS 7910260113 | |
| Download: ML19254D511 (7) | |
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'o UNITED STATES 8 h*m NUCLEAR REGULATORY COMMISSION g
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'%.U OCT 1E 1979 Docket Nos: 50-369 50-370 Mr. William 0. Parker, Jr.
Vice President, Steam Production P. O. Box 2178 422 South Church Street Charlotte, North Carolina 28242 rear Mr. Parker:
SUBJECT:
ENVIRONMENTAL QUALIFICATION OF CLASS IE INSTRUME'.JION AND ELECTRICAL EQUIPMENT (McGuire Nuclear Station, Units 1 and 2)
During our review of the McGuire application for an opera' ting license we have been evaluating the environmental qualifications of Class IE instrumentation and electric equipment. This evaluation is being perfomed on a generic basis as well as plant specific both for equipment supplied by the NSSS supplier as well as equipment supplied for the Balance-of-Plant. As a result of our evaluation we have requested and you have supplied information regarding this mat 1;er. The information provided by you is substantial and is, presented in sections
- of the Final Safety Analysis Report as well as by reference to Westinghouse Topical Reports and specific equipment testing reports.
As you know, requirements for environmental qualification of Class IE instru-mentation and equipment have been evolving as a result of considerable effort expended by both the staff and nuclear industry. As a result of these efforts we have developed an interim position regarding environmental qualifications.
We are forwarding a draft copy of NUREG-0588, " Interim Staff Position on Environmental Qualification of Safety-Related Electrical Equipment" for your information (Encmsure 1).
Prior to ccmpletion of our review of the qualification related documentation you have submitted as part of the McGuire application, we plan to assess the degree to which the qualification programs described in that documentation comply with the guidelines contained in our interim position. As part of this assessment, we plan to identify that equipaent which was not qualified in accordance with our guidelines and, provided it is justified, we will establish a basis for the acceptability of these deviations. To assist us in completing this task promptly, we request that you provide the infomation identified in Enclosure 2.
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Mr. William 0. Parker, Jr. CCr 2 5 37g This information should allow us to ccmplete our evaluation and make the deter-mination that the environmental qualification of Cliss IE instrumentation and electrical equipment is acceptable. This matter is identified as Items 15 and 16 on the McGuire Milestone Chart.
Please inform us within seven days after receipt of this letter of your schedule for providing this information.
Sincerely, l uk.
Robert L. Baer, Chief Light Water Reactors Branch No. 2 Division of Project Management Enclosures :
1.
NUREG-0588 (DRAFT) 2.
Additional Request For Information (Equipment Qualification) ces w/ enclosure 2:
- p 44 See next pages
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Mr. Willian 0. Parker, Jr.
Vice President, Steam Production i
Duke Power Company P. O. Box 2178 422 Sc uth Church Street Charlc tte, North Carolina 28242 cc: Mr. W. L. Porter Duke Power Company P. O. Box 2178 422 South Church Street Charlotte, North Carolina 28242 Mr. R. S. Howard Power Systems Division Westinghouse Electric Corporation P. O. Box 355 Pittsburgh, Pennsylvania 15230 Mr. E. J. Keith EDS Nuclear Incorporated 220 Montscmery Street San Francisco, California 94104 Mr. J. E. Houghtaling NUS Corporation 2536 Countryside Boulevard Clearwater, Florida. 33515 Mr. Jesse L. Riley, President The, Carolina Environmental Study Group
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854 Henley Place Charlotte, North Carolina 28207 J. Michael t'cGarry, III, Esq.
Debevoise & Liberman 1200 Seventeenth Street, N. W.
Washington, D. C.
20036 Robert M. Lazo, Esq., Chainnan Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Dr. Emmeth A. Luebke Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Dr. Cadet H. Hand, Jr., Director Bodega Marine Lab of California P. O. Box 247 Bodega Bay, California 94923
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Mr. William O. Parker, Jr.
cc: Anthony Z. Roisman, Esq.
Natural Resources Defense Council 917 - 15th Street, N. W.
Washington, D. C.
20555 Richard P. Wilson, Esq.
Assistant Attorney General State of South Carolina 2600 Bull Street Col umbia, South Carolina 29201 74-t9b t
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O Ef:CL0fu2C 2 ADDITIONAL REQUEST FOR INFORMAT!0ft (Equipment Qualification)
The FSAR Tables that identify the operational requirements of equipment 1.
which must function during and subsequent to the design basis accidents are general and do not provide sufficient information for the review of Therefore, provide a table listing of all Class equipment qualification.
IE safety-related equipment and appropriate qualification related data for This table should include all equipment each as noted in the attachment.
located both inside and outside of containment, including balance-of-plant and nuclear steam system supplied equipment.
Where components have been qualified by an equipment system test, identification of the equipment is sufficient, i.e., individual components need not be listed.
Equipment components should be identified where qualified by separate tests or Where more than one item of a given type is used, it is only analysis.
necessary to present the required information for one, representative item of that type for the worst case environment.
For equipment located outside containment which may not have been qualified to abnormal environmental conditions, the environmental design requirements For for this equipment should be provided and noted as such in column 5.
each area of the plant where such equipment is located the normal operating extremes in environmental conditions should be provided and noted as such should be provided for each such area to provide in column 4.
A footnote the basis that the normal operating extremes in environmental conditions will not be exceeded.
Such basis should include the quality of environ-mental control systems, their redundancy, sources of power and cooling,and operating requirements to maintain suitable environmental conditions during all modes of plant operation. The monitoring of ebvironmental conditions in controlling such environments should also such areas and of the equipment be ddressed to provide assurance that such conditions are maintained.
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e-OCT 151979 2.
IEEE std. 323-1971 does not spec'ifically address aging mechanisms as a consideration in the qualification of safety related electrical equipment.
Subsequently, IEEE Std. 323-1974 addressed aging in the sequence of factors to be considered. While for many components, aging may not play a significant role in the ability. of a component to withstand the effects of an abnormal or accident savironment and still perform its required functicn; ::iare are certain materials which may be subjected to degradation over a long period of time.
It is the staff's position that applicants with qualification programs for safety-related electrical equipment, conducted in accordance with IEEE Std. 323-1971, should undertake an investigation of the electrical equipment to ensure that significant aging mechanisms do not exist which could invalidate the conclusions of prior qualification.
Sources of information, specifically material manufacturers data, should be consulted as a part of this review.
Therefore, you are requested to conduct such an evaluation and to report your findings at the earliest opportunity.
For any equipment for which significant aging mechanisms are identified, provide the justification and time interval for acceptable use of this equipment which does not invalidate its prior qualification or provide other proposed alternatives such as requalification or replacement with qualified equipment and not subject to aging concerns.
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I EXAt2LE TABLE ENVIR0t:f1ErlTAL QUAltf! CATION OF ELECTRICAL EQUIPitENT CCI t 5 ISU 1
2 3
5 6
7 8
9 10 l
ype of Manufacturer Model *ac. or Abnormal or En vi ronmen t Operability Operattlity Accuracy Accuracy Qualification quipment/
Ident.if t cation Accident to Which Requi remen 's Demonstrated Requirements Demonstrated Report and ocation(t!)
ho. (S)
Environnent(l)
Quali fied(2)
(3)
(4)
(3)
(6)
Method (1)
- 1) Temperature and pressure as a function of tine, time interval for containment sprays, and total integrated radiation dose for equipment location.
Include subnergence if applicable. Reference may be made to figures in FSAR or other docketed material for pressure and tenperature envelope.
Other information should be listed in this table.
Temperature and pressure, as a fu ction of time, time interval containment sprays simulated, and total integrated raidation dose for which 2) a equipment was qualified. If the sue piece of equipment was not subjected to all environmental conditions, describe separate effects testing and justify. Include submergence test if applicable. Reference may be nude to ttgures for qualification envelopes or actual test conditions for pressure and temperature conditions noted in qualification reports submitted for staf f review. Other information should be listed in this table.
Time that equipment is required to operate during and subsequent to a des)gn basis event consistent with plant safety analysis. Distinguish
- 3) between trip functions and post accident monitoring for sensors and transmitters if accuracy requirements dif fer for these functions.
l4) Time that equipment operability was demonstrated by qualification method. Distinguish between trip functions and post accident monitoring for sensors and transmitters if accuracy requirements differ for these functions.
- 5) Provide the accuracy requirements for sensors and transmittes for trip functions and post accident monitoring as used in plant safety analyses, i
Note applicability of each if they differ.
'6) Accuracy for sensors and transmitters should distinguish between trip functions and post accident monitoring if requirements differ for these functions.
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- 7) Method should indicate test, analysis or corbination as applicable. If qualification considered aging include in this column the qualified life and accelerated aging time and temperature conditions used.
l8) For ICE condenser containments, specify upper or lower compartnent.
'9) Model or identification number should be adequate to define specific equipment identityldo not provide plant specific tag item number).
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