ML20058H720
| ML20058H720 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 08/02/1982 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 18371, NUDOCS 8208090055 | |
| Download: ML20058H720 (5) | |
Text
e CORSum8fS Power Company ve- ~su,., - ~x,s. e.,< -r, and Construction General offices: 1945 West Parnell Road, Jackson, MI 49201 e (517) 78&O453 August 2, 1982 Mr Harold R Denton, Director Office of Nuclear Reactor Regulation Att: Division of Licensing US Nuclear Regulatory Commission Washington, DC 20555 MIDLAND PROJECT MIDLAND' DOCKET NO 50-329, 50-330 MIDLAND CONCRETE WALL CRACK REPAIR PROGRAM FILE: 0485.16 SERIAL: 18371 A meeting was held on June 25, 1982 between Consumers Power Company and the NRC to resolve outstanding technical issues regarding the soils remedial actions. During the meeting, Consumers Power Company committed to repair concrete cracks in the category I safety grade buildings affected by the soil fill. The purpose of this letter is to formally document our commitments.
The crack repair program Consumers Power Company has committed to perform is based on the recommendations of our consultants and the concerns expressed by the NRC Staff.
It applies to the Diesel Generator Building, Service Water Pump Structure, Control Tower and Electrical Penetrations Areas of the Auxiliary Building and Feedwater Isolation Pits. The Program, which will be completed prior to the first refueling of the plant, consists of the following three points:
- 1) Repair by epoxy injection any cracks in the structures which are below the permanent ground water table and which exhibit weeping characteristic. This repair will be performed from the inside of the structures.
- 2) Coat the splash zone of the exterior surface of the south wall of the Service Water Pump Structure which is in contact with cooling pond water with waterproofing compounds.. The waterproofing compound will be one of the three compounds recommend by consultants in their report
" Effects of Cracks on Serviceability of Structures in the Plant" submitted to the Staff as an enclosure to letter from J W Cook to H R Denton, Serial 16884, Dated April 23, 1982 or equivalent.
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- 3) Repair by epoxy injection existing cracks which are 20 mils and larger and apply a sealant to the surfaces of the concrete walls in the following accessible areas (i.e. areas where removal of soil or installed equipment or installed components is not necessary to perform the repair). The extent (length) of the crack that will be injected with epoxy will be limited to. crack widths of 10 mils or larger.
Diesel Generator Building (a) All accessible interior reinforced concrete walls.
(b) All accessible exterior concrete walls.
Control Tower & Electrical Penetration Areas (a) All accessible exterior concrete walls.
SWPS (a) All accessible exterior concrete walls.
Prior to the initiation of repairs, all cracks 20 mils and larger and weeping cracks in the applicable areas will be identified. A verification of this identification to a tolerance of +5 mils will be performed. This verification and subsequent repair will be in accordance with the quality program. The material for structural epoxy adhesive will be "Concresive 1380" manufactured by Adhesive Engineering Company, or equivalent.
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3 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 GHarstead, Harstead Engineering, w/o DSHood, NRC, w/o (2)
DFJudd, B&W, w/o JDKane, NRC, w/o FJKelley, Esq, w/o RBLandsman,'NRC Region III, w/o WKMarshall, w/o JPMatra, Naval Surface Weapons Center, w/o W0tto, Army Corps of Engineers, w/o WDPaton, Esq, w/o SJPoulos, Geotechnical Engineers, w/o FRinaldi, NRC, w/o HSingh, Army Corps of Engineers, w/o/
BStamiris, w/o 1
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BCC RCBauman, p-14-312B, w/o AJBoos, Bechtel, w/o JEBrunner, M-1079, w/o WJCloutier, P-24-611, w/o BDhar, Bechtel, w/o EMHughes, Bechtel, w/o RWHuston, Washington, w/o JKMeisenheimer, P-14-100, w/o JAMooney, P-14-115A, w/o DBMiller, Midland, w/o MIMiller, IL&B, w/o KBRazdan, P-14-419, w/o JARutgers, Bechtel, w/o/
JRSchaub, P-14-305, w/o PSteptoe, IL&B, w/o TJSullivan/DMBudzik, P-24-624A, w/o RLTeuteberg, P-24-505, w/o TRThiruvengadam, P-14-400, w/o DJVandeWalle, P-24-414, w/o FCWilliams, IL&B, w/o NRC Correspondence File DBMiller, Midland, Bechtel Bldg JAMooney, P-14-115A GBSlade, Midland DLSowers, P-13-407 DMTurnbull, Midland RAWells, P-14-113A oc0782-0193a100
.a CONSUMERS POWER COMPANY Midland Units 1 and 2 Docket No 50-329, 50-330 Letter Serial 18371 Dated August 2, 1982 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 additional information on Midland Concrete Wall Crack Repair Program.
CONSUMERS POWER COMPANY By J
Cook, Vice President Projec-, Engineering and Construction Sworn and subscribed before me this M day of August 1982 SwL $ &
gf Notary Piglic ceverly A. Avery Jackson County, Michigaa
/4,/f M My Commission Expires 1-l l
mi0782-0193bl00 1.
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