ML19344E798
| ML19344E798 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 07/28/1980 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Linder F DAIRYLAND POWER COOPERATIVE |
| References | |
| TASK-03-11, TASK-3-11, TASK-RR NUDOCS 8009110612 | |
| Download: ML19344E798 (5) | |
Text
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UNITED STATES
[
g NUCLEAR REGULATORY COMMISSION
- j WASHINGTON, D. C. 20555
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JUL 2 81980 Docket No. 50-409 Mr. Frank Linder General Manager Dairyland Power Cooperative P.O. Box 817 Lacrosse, Wisconsin 54601
Dear Mr. Linder:
SUBJECT:
ANCHORAGE AND SUPPORT OF SAFETY RELATED ELECTRICAL EQUIPMENT
References:
1.
Letter from D. Eisenhut to SEP Licensees, dated January 1, 1980 2.
Letter from F. Linder to D. Eisenhut, dated May 30,1980 Reference 1 identified a potential safety concern relative to the anchorage and support of safety related electrical equipment and requested that you initiate a program to resolve this issue including the installation of any required modifications by September 1,1980.
In your response l
(Reference 2) you stated that all safety related and non-safety related electrical equipment were inspected, and you provided a list of electri-cal equipment which have positive anchorage. Reference 1 also requested that you initiate a program to verify the capacity of these anchorages and supports. Your response did not address this issue. We are providing guidance to you concerning this program as indicated in the enclosures. provides guidance as to the -expected scope of your investiga-tions and information which should be documented for our review. A suggested format for this documentation is provided in Enclosure 2.
Due to the lack of clarification relative to certain requirements of Reference 1 and in particular the issue of support of internally attached electrical components, we will permit an extension until December 31, 1980 for completion of this program. This shall include the installation of any modifications which may be required as a result of your investigations.
Any modifications shall be made in accordance with 10 CFR 50.59 of the Comission Regulations. We request that formal documentation sumarizing your program be submitted to this office by December 31, 1980.
Existing plant floor response spectra or floor response spectra computed or estimated from the NRC Site Specific Spectra Program are acceptable
'800$1M
[2 L..Ohah e gcape en ea m
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. JUL 2 81980 for use in your evaluation. The conservatism of these loadings shall be verified when the final floor response spectra are available.
Sincerely, W
M4
'A Dennis M. Crutchfield, Chief Operating Reactors Branch #5 Division of Licensing
Enclosures:
As stated cc w/ enclosures:
See next page l
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o Mr. Frank Linder cc Fritz Schubert, Esquire Director, Technical Assessment Staff Attorney Division Dairyland Power Cooperative Office of Radiation Programs 2615 East Avenue South (AW-459)
La Crosse, Wisconsin 54601 U. S. Environmental Protection Agency
- 0. S. Heistand, Jr., Esquire Crystal Mall #2 Morgan, Lewis & Bockius Arlington, Virginia 20460 1800 M Street, N. W.
Washington, D. C.
20036 U. S. Environmental Protection Agency Mr. R. E. Shimshak Federal Activities Branch La Crosse Boiling Water Reactor Region V Office Dairyland Power Cooperative ATTN: EIS COORDINATOR P. O. Box 135 230 South Dearborn Street Genoa, Wisconsin 54632 Chicago, Illinois 60604 Coulee Region Energy Coalition Charles Bechhoefer, Esq., Chairman ATTN: George R. Nygaard Atomic Safety and Licensing Board P. O. Box 1583 U. S. Nuclear Regulatory Comission La Crosse, Wisconsin 54601 Washington, D. C.
20555 La Crosse Public Library Dr. George C. Anderson 800 Main Street Department of Oceanography La Crosse, Wisconsin 54601 University of Washington Seattle, Washington 93195 Mrs. Ellen Sabelko Society Against Nuclear Energy Mr. Ralph S. Decker 929 Cameron Trail Route 4, Box 1900 Eau Claire, Wisconsin 54701 Cambridge, Maryland 21613 Town Chairman Dr. Lawrence R. Quarles Town of Genoa Kendal at Longwood, Apt. 51 Route i Kenneth Square, Pennsylvania 19348 Genoa, Wisconsin 54632 l
Thomas S. Mcore l
Chairman, Public Service Comission Atomic Safety and Licensing Appeal Board of Wisconsin U. S. Nuclear Regulatory Comission Hill Farms State Office Building Washington, D. C.
20555 Madison, Wiscon3in 53702 Ms. Anne K. Morse Alan S. Rosenthal, Esq., Chairman Coulee Region Energy Coalition Atomic Safety and Licensing Appeal Board Post Office Box 1583 U. S. Nuclear Regulatory Comission Lacrosse, Wisconsin 54601 Washington, D. C.
20555 U. S. Nuclear Regulatory Comission Mr. Frederick Milton Olsen, III Resident Inspectors Office 609 North lith Street Rural Route #1, Box 225 Lacrosse, Wisconsin Genoa, Wisconsin 54632 l
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ENCLOSURE 1 ANCHORAGE AND SUPPORT OF SAFETY ~
RELATED ELECTRICAL EQUIPMENT POINTS TO BE ADDRESSED BY LACROSSE PLANT IN DECEMBER 31, 1980 SUBMITTAL 1.
Information should be provided not only for the anc*1orage of electrical equipment but also the entire support that provides a load oath (such as bracing and frames), as well as support for internally attached components.
The latter is especially important for cabinet or panel type electrical equipment (such as control panels, instrument panels, etc.) which has internally supported components.
An example of a potential improperly supported internal component would be a heavy component cantilevered off a front sheet metal panel without additional support to a stronger and stiffer location.
These inadequate supports for internal components also should be 1.dentified and corrected before December 31, 1980.
2 In order towrify that an anchorage or a support of safety related electrical equipment has adequate capacity, provide justification by test, or analytical means.
If expansion anchor bolts exist, justifi-cation provided previously for IE Bulletin 79-02 can be utilized if applicable.
The acceptance criteria for substantiating these judgements should be provided, this may involve specifying the factor of safety and allowable stress limits used for design and justifying the overturning moment and shear force used.
3.
Provide a table listing all (to include both floor and wall mounted) safety related electrical equipment in the plant.
For each piece of equipment provide the information described in the attached table (attachment 2).
These investigations of each piece of equipment should determine:
a.
Whether positive anchorage or support exists b.
The type of anchorage
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Whether internally attached components are properly supported d.
Identify non-seismic Category I equipment, the dislodgement of which during an earthquake may be detrimental to safety related equipment and render them inoperable.
Inspecticn of, the anchorages of such non-seismic Category I equipment should be conducted.
If positive anchorages do not exist, they should be identified and modified before December 31, 1980.
4.
Wherever modifications of anchorages or supports are required, these modifications should be implemented and thoroughly documented.
5.
The seismic design of cable trays may be treated as a separate problem, because of its complexity.
Lacrosse Plant should provide a separate action plan for the resolution of this issue within 3C days of receipt of this letter.
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[NCLOSURE 2 l j StWlARY Of INy[SilfATION Of ANCH0ftACE AND SUPPORT Of
. SAFETY Rtl ATED [L[CTRICAt. [QUIPENT AND NON-SflSNIC CAirGORY I i
ITlHS THAT MAY DA"Vi Tlil5 EQtilPMNT System Internally Attached Components Non-Seismic Cat i Items I.O. of Equip.
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In Which Location Type of Wat Anchorage Midiffed Tg'ulpTEW Type Of' Warsupport that could potentially Document Name ID Installed Bldg. & Elev.
Anchorage
- Since Jan. 1, 19fl0
& ID Support Evaluated
,[n.tms 31th th !Lemio.
Supporting Name &
Type of Was Support Conclusion o
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[yluated
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'Exemples of Type of Anchorage:
1.
Bolted to Equipment 2.
Bolted to Concrete Wall 3.
Bolted to Concrete Slab
,' ; 4.
Bolted to Block Wall 5.
Welded to Endsedded Channel I
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