ML20086M247
| ML20086M247 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 02/09/1984 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20086M252 | List: |
| References | |
| NUDOCS 8402160458 | |
| Download: ML20086M247 (3) | |
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Consumers Power James W Cook Vice Pr:;sident - Projects, Enginee,ing and Csnst,wetion General Offices: 1945 West Parnali Road, Jackson, MI 49201 * (517) 788-0453 i
February 9, 1984 Mr Harold R Denton, Director
- Office of Nuclear Reactor Regulation Division of Licensing US Nuclear Regulatory Commission Washington, DC 20555 MIDLAND ENERGY CENTER MIDLAND DOCKET NOS 50-329, 50-330 SEISMIC MARGIN REVIEW REPORT 1
FILE B3.7.1 SERIAL 27163 ENCLOSURE: VOLUME IX - BALANCE OF PLANT CLASS 1, 2 AND 3 PIPING, 3
PIPE SUPPORTS AND VALVES (25 COPIES)
REFERENCE:
LETTER FROM J W COOK TO H R DENTON, DATED FEBRUARY 4, 1983 SERIAL 21010 As a'n attachment to'our letter, Serial 21010, dated February 4, 1983, we submitted the criteria for the Seismic Margin Review to the Staff as Volume I.
This submittal was subsequently discussed in a meeting on February 8,'1983 in Bethesda. The firm of Structural Mechanics Associates (SMA) under the direction of Dr R P Kennedy, was assigned the task of performing the Seismic i:
Margin Review per the criteria in. Volume I.
Volume IX of the Seismic Margin
. Review is submitted as an attachment to this letter for the Staff's review.
Volume IX, which is entitled, " Balance of Plant (B0P) Class 1, 2 and 3 Piping,
' Pipe Supports-and Valves, describes in detail the method of analysis and the L
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resulting seismic margins associated with this BOP equipment. The evaluation of=the B0P piping was directed towards the determination of the minimum.
margins to code'allowables pertaining to three parameters: pipe stresses or stress intensities; valve accelerations; and support loads. The lowest margins identified for the pipe stress and valve accelerations are on the u
service water system'within the service water pump structure and are conservatively estimated to be 1.57 and 1.35,.respectively. The lowest margin identified for a pipe support is on the Decay Heat Removal suction line and is conservatively estimated to be 1.14.
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2 The final volume of the Seismic Margin Review Report, Volume X, dealing with Miscellat.cous Subsystems and Components will be submitted as soon as it j
becomes available.
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For JWC/BFH/bjw CC JGKeppler, Administrator, NRC Region III RJCook, Midland Resident Inspector DSHood, US NRC, Licensing Branch No 4
- JBramer, US NRC PChen, ETEC
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o-CONSUMERS POWER COMPANY Midland Units 1 and 2 Docket No 50-329, 50-330 Letter Serial 27163 Dated February 9, 1984 At the request of the Commission and pursuant to the Atomic Energy Act of 1954, and the Energy Reorganization Act of 1974, as amended and the Commission's Rules and Regulations thereunder, Consumers Power Company submits Volume IX of the Seismic Margin Review titled " Balance of Plant Class 1, 2 and 3 Piping, Pipe Supports and Valves".
CONSUMERS POWER COMPANY By_
M If 'R7 Erhardt Executive Manager - Midland Project Sworn and subscribed before me this /
day of /_//f4(&f///, -
0tflt'Eff fu g/
/ Notary Public Jackson County, Michigan My Commission Expires /8/88/f/
oc0184-0720a100 i
I SMA 13701.05R003 (VOLUME IX)
II I
SEISMIC MARGIN REVIEW MIDLAND ENERGY CENTER PROJECT I
VOLUME IX BALANCE OF PLANT CLASS 1, 2 AND 3 PIPING, PIPE SUPPORTS AND VALVES I
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prepared for CONSUMERS POWER COMPANY Jackson, Michigan January, 1984 I
g g STRUCTURRL mECHRnKS I
- ASSOCIATES Y
A C alif. Corp.
5160 Birch Street, Newport Beach, Calif. 92660 (714) 833 7552
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