ML20077H532
| ML20077H532 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 08/02/1983 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 23872, NUDOCS 8308110014 | |
| Download: ML20077H532 (4) | |
Text
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Consumem power James W Cook 0
Vice President - Projects, Engineering and Construction Generet offices: 1945 West Pernell Road, Jackson, MI 49201 e (517) 78&O453 August 2, 1983 Harold R Denton, Director Office of Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 MIDLAND ENERGY CENTER MIDLAND DOCKET NOS 50-329, 50-330 i
SERVICE METAL TEMPERATURES FOR CONTAINMENT FLUED HEAD PENETRATIONS FILE: M-111 SERIAL: 23872
REFERENCE:
J W COOK LETTER TO H R DENTON (NRC) SERIAL 23223 DATED 6/23/83 This letter provides information on the lowest expected service metal temperatures for selected containment flued head penetrations.
In the referenced letter, Consumers Power Company transmitted information relating to the reclassification of penetrations at the Midland Plant from SA-508 Class I material to SA-105 material. Furthermore, Consumers Power Company committed i
to subsequently submit the lowest expected service metal temperatures for the subject penetrations. The fellowing listing indicates both the lowest expected and the lowest permissible service metal temperatures for each of the penetrations under review.
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8308110014 830002 PDR ADOCK 05000329 PDR A
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Lowest Service Lowest Service Metal Temperature (*F)
Metal Temperature ('F)
Penetration No Expected Permissible
- Penetration No Expected Permissible
12-34 60 58 2Z-34 60 58 IZ-5 50 50 2Z-5 50 50 1Z-12 50 50 2Z-12 50 50 1Z-80 60 45 22-80 60 45
IZ-48 50 40 2Z-48 50 40 1Z-36 40 40 2Z-3 40 40 IZ-42 40 40 2Z-9 40 40 12-43' 40 40 2Z-36 40 40 12-50 40 40 2Z-42 40 40 1Z 60 40 2Z-50 50 40 12-86 60
~ 40 2Z-69 60 40 12-71 40-40 2Z-86 60 40 1Z-73 40 40 2Z-71 40 40 2Z-73 40 40 l
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- Ther10 west service meta 11 temperature permissible is computed
- using an assumed value of._+10*F-for TNDT.fr a Table NC-2311(a)-1 l
Lin ASNE Section III Code..This +10*F value is for SA-508 Class 1 Material.
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3 The preceeding table shows that for all of the affected penetrations, the minimum expected service metal temperatures are equal to or greater than the minimum permissible service metal temperatures.
Consistent with previous Staff communications, the data for minimum expected service temperatures were determined based on a 90% or greater probability of occurence.
This transmittal should complete the information the NRC requires to evaluate the proposed penetration material reclassification from SA-508 Class I material to SA-105 material. Should the Staff have any further questions regarding this topic, CPCo would request that a meeting be scheduled at your earliest convenience.
1 JWC/MFC/bjb CC RJCook, Midland Resident Insp tor JGKeppler, Administrator, NRC Region III
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MAMiller, Project Manager, Licensing Branch No 4 l.
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,s-e CONSUMERS POWER COMPANY Midland Units 1 and 2 Docket No 50-329, 50-330 Letter Serial 23872 Dated August 2, 1983 At the request of the Comnission and pursuant to the Atomic Energy Act of 1954, and the Energy Reorganization Act.of 1974, as amended and the Connission's Rules and Regulations thereunder, Consumers Power Company submits expected west service metal temperatures for flued head containment penetrations.
CONSUMERS POWER COMPANY By W Cook, Vice Pr'esident -
Pr ects, Engineering and Construction 0 ay of du,,,1/fff.
Sworn and subscribed before me this 9 d
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Sv&// ($vui Beverly A. AdryNotary PuWlic Jackson County, Michigan My Commission Expires h!,,,,, o,,
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