ML20093C068
| ML20093C068 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 04/28/1982 |
| From: | Lear G Office of Nuclear Reactor Regulation |
| To: | Adensam E Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19258A087 | List:
|
| References | |
| CON-BX16-035, CON-BX16-35, FOIA-84-96 NUDOCS 8205050209 | |
| Download: ML20093C068 (2) | |
Text
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!!B:0RATIDU;l FOR: Elinor Adensam, Chief Licensing Cranch !!o. 4 Division of Licensing Ti'RU:
James P. Knight, Assistant Director for Components and Structures Engineering Division of Engineering FR0st:
George Lear, Chief Hydrologic and Geotechnical Engineering Dranch Division of Engineering SUDJECT:
UllDERPI!itlIrlG AUXILIARY BUILDI;;G - PilASE 2 Plant f!ame: '!!idland Plant, Units 1 and 2 Licensing Stage: OL Responsible Branch: LB !!o. 4, D. Hood, PM Requested Completion Date: April 23, 1982
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Enclosed is our Geotechnical Engineering Section listing of the remaining review issues requiring resolution before the start of Phase 2 underpinning operations for the Auxiliary Cu11 ding. This listing was prepared by J. Kane and these issues have been discussed with the Applicant at past Design Audits and at a meeting in D. Ilood's office with Consumer's representative on April 15, 1982.
The enclosed listing sumarizes the issues which remain in geotechnical engineering following our review of the March 31, 1982 letter with enclosures from J.11. Cook to li. R. Denton on the above sub, ject.
George 1. ear Originalsigned h1 George Lear, Chief Ilydrologic and Geotechnical Engineering B'.anch Division of Engineering en w/ enclosure R. Vollmer T. Sullivan
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l' Midland Plant Units l'and 2 Docket Numbers: 50-329/330
SUBJECT:
AUXILIARY BUILDING UNDERPINNING - PHASE 2 REMAINING REVIEW ISSPES
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Provide the actual locations of installed deep seated bench marks t
DSB-AS1 and DSB-AS2.
Indicate distances from the more deeply founded k 7. v.,1 a !..
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Main Auxiliary Building walls.
Indicate'the necessary changes in s..t; b.
p,I'a ' h " f 2 tolerance criteria column on Drawing C-1493(Q) caused by.the change A-j in location from original DSB-AS.
NRR requests notification that the following monitoring devices are 2.
installed and properly operating prior to the start of Phase 2.
DSB-lW DMD-1W w.ti ej r i A h a vi y 4 g is.m - ~. t,..A i DSB-lE DMD-lE I
DSB-2W DMD-ll y,_
DSB-2E DMD-12 DSB-3W DMD-13 DSB-3E DSBAS-1 DSBAS-2 DSB-AN i
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Provide details of strain gage installation on Main Auxiliary Building y\\... k..y,u.t to % a.'tpe,
, during underpinning and frequency cf readings..'> %
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Prov.ide load test procedures for verifying hard clay foundation modulus a
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and.for correlating with cone penetrometer test.
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Provide pierometer locations and depths for construction dewatering and
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With respect to monitoring movement of FIVP, either indicate on Drawir.g 6.
C-1493(Q) the remedial action to be taken if 3/8 inch settlement is j
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>J 0-reached or provide copy.of Specification 7220-C-200 which should describe the actions to be taken.
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