ML20039F414

Forwards Effects & Monitoring Procedures for Installation of Freezewall Dewatering at Midland 1 & 2. Summary of Measures Planned for Protection of Underground Utils & Structures Encl,In Response to NRC 811221 Telcon Request

ML20039F414
Person / Time
Site:	Midland
Issue date:	01/06/1982
From:	Mooney J CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20039F415	List: ML20039F414 ML20039F419
References
15424, NUDOCS 8201120436
Download: ML20039F414 (2)

Text

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Consumers Power Company 3"*,",u*"- ,,oje, unen,-,,,

and Construction General offices: 1945 West Parnall Road, Jackson, MI 49201 * (517) 788 0453 January 6, 1982

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ECENE{J -

Harold R Denton, Director -

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US Nuclear Regulatory Commission Washington, DC 20555 g MIDLAND PROJECT

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% 0 MIDLAND DOCKET NOS 50-329, 50-330 AUXILIARY BUILDING UNDERPINNING FREEZE WALL - EFFECTS OF THE FREEZE WALL ON UTILITIES AND STRUCTURES FILE 0485.16 SERIAL 15424

REFERENCES:

(1) JWC00K LETTER TO HRDENTON, SERIAL 14318, DATED OCTOBER 28, 1981 (2) JWC00K LETTER TO HRDENTON, SERIAL 14869, DATED NOVEMBER 16, 1981 (3) JWC00K LETTER TO HRDENTON, SERIAL 14874, DATED NOVEMBER 24, 1981 ENCLOSURE: EFFECTS AND MONITORING PROCEDURES FOR INSTALLATION OF FREEZE WALL DEWATERING AT MIDLAND UNITS 1 AND 2 In the referenced correspondence of October 28, 1981 (Reference 1) and during an October 1, 1981 meeting with the Staff, we presented a freeze wall concept for groundwater control under consideration for'the underpinning of the auxiliary building. During a subsequent telephone discussion with the Staff on December 21, 1981, we proposed an approach for establishing protective measures for underground utilities and structures in the affected area of the freeze wall.

In response to a Staff request made during the December 21, 1981 telecommunication, we are providing the enclosed summary of measures that we are planning for the protection of underground utilities and structures. The enclosed document contains: (a) the plans and elevations of the excavations at the affected utilities; (b) a cross-sectional view showing how the freeze wall is tied to the containment; and (c) reasons for using this approach.

Using this approach for protection of underground facilities isolates them from the effects of heave due to freezing.

With reference to the NRC's testimony on the remedial measures for the auxiliary building, transmitted to the ASLB in the NRC's correspondence of oc0182-0001a100-820112013(,6 6d (g y

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November 20, 1981, the enclosed report responds to the special licensing conditions identified in Table A.20, Parts 2a and 2b, and to Question 4 of Attachment 21 to this testimony. Regarding the special licensing conditions from Table A.20, Parts 2c and 2d for activation of the freeze wall, Question 3 of Attachment 21 to the NRC's testimony has been answered in Reference 2 of this letter. Our response to Questions 14 and 17 of Attachment 21 were provided in References 2 and 3 above and in the testimony of JPGould.

This completes our response to all parts of Item 2 of Table A.20.

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'A Mooney Executive Manager Midland Project Office For J W Cook JWC/RLT/dsb CC Atomic Safety and Licensing Appeal Board, w/o CBechhoefer, ASLB, w/o MMCherry, Esq, w/o FPCowan, ASLB, w/o RJCook, Midland Resident Inspector, w/o RSDecker, ASLB, w/o SGadler, w/o JHarbour, ASLB, w/o DSHood, NRC, w/a (2)

DFJudd, B&W, w/o JDKane, NRC, w/a FJKelley, Esq, w/o RELandsman, NRC Region III, w/a WHMarshall, w/o JPMatra, Naval Surface Weapons Center, w/a W0tto, Army Corps of Engineers, w/a WDPaton, Esq, w/o FRinaldi, NRC, w/a HSingh, Army Corps of Engineers, w/a BStamiris, w/o oc0182-0001a100