ML17256B219
| ML17256B219 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 08/30/1982 |
| From: | Maier J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-03-03.A, TASK-3-3.A, TASK-RR NUDOCS 8209080374 | |
| Download: ML17256B219 (6) | |
Text
REGULATOR VFORMATION O'ISTRIBUTiIOV rEM'RODS>
ACCESSION.NBR:8209080374 DOC.DATE-: 82/08/30 iVOT'ARIZED: NO DQCKEfli 0.
FAC'lL".50-244 Roberti Ktnmet Giinna Nucil ear P
1 a'nt i Uni tt 1 i Rochester G
05000244'UTH.NAMEi AUTHOR'FFiILflATION MAIERiJi. E'.
Rochester: Gas.L Electr ic>> Cbro.
RECIP ~ NAME RECKPiIENiP AFFILIIATION'RUTCHF'IELDtD
~ "'oers.tn no Rea'ctors Brahch 5
SUBJEC'T:
Responds toi VRCl evailuati on of SEP< Tooi c.'II.-3.Ai "Effects of Hi'oh Hater Level~,on Structures.." Utiji oroaosing around~ster monitorina orouram toI be initiated in Summer" ofi 198'3.'ISTRIBUTION CODEi:
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ROCHESTER GAS AND ELECTRIC CORPORATION o
89 EAST AVENUE, ROCHESTER, N.Y. 14649 JOHN E.
MAIER VICE PRESIDENT TEEEPNONe AREA CODE, 7IE 546.2700 August 30, 1982 Director of Nuclear Reactor Regulation Attention:
Dennis M. Crutchfield, Chief Operating Reactors Branch No.
5 U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Sub ject:
SEP Topics III-3.A, Effects of High Water Level On Structures R.
E.
Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Crutchfield:
This letter is in response to the NRC Staff's evaluation of Systematic Evaluation Program Topic III-3.A.
This evaluation compares the R.
E.
Ginna Facility as described in Docket No. 50-244 and associated submittals, with Standard Review Plan 3', analysis of flood loadings, and Regulatory Guide 1.102, acceptable flood protection.
These criteria are currently used by the regulatory staff for licensing new facilties.
The groundwater elevation assumed for the design of the screen house structure was elevation 253.5 MSL (grade),
while elevation 250.0 MSL was used for all other safety-related structures (Reference Letter of 1/28/81, RGEE to NRC)
~
RGSE has submitted numerous boring data to suggest the DBGWL of 250 MSL.
- However, this data was considered by the NRC to be insufficient to definitively establish this level.
Absent additional confirmation, the NRC position is that groundwater should be established at grade.
This definition would increase the groundwater level above the Ginna design basis groundwater level by approximately 20 feet at most structures.
8209080374 820830 PDR ADCICK 05000244 P
k P(
P'
In order to ascertain that a
DBGWL of 250 MSL is correct, RGS;E is proposing to establish a groundwater monitoring program.
This program will consist of one monitoring well placed on the R.
E. Ginna site in a location in the vicinity of the auxiliary building, determined by evaluation of existing geologic data to intercept the maximum groundwater flow upstream of the foundations of the safety-related structures.
A fully-encased boring will be drilled into the groundwater table and a monthly surveillance program will be initiated.
This groundwater monitoring program will be initiated in the summer of 1983, and is expected to continue for approximately three years'hen sufficient data has been
- gathered, a design basis groundwater level will be established, and a structural evaluation will be performed, if considered necessary.
Very truly yours, J.
E. Maier
C
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