ML20062C846
| ML20062C846 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 10/26/1990 |
| From: | Feigenbaum T PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20062C849 | List: |
| References | |
| NYN-90189, NUDOCS 9011020191 | |
| Download: ML20062C846 (2) | |
Text
Ted C. Feigenbaum President and '
Chief Executive Officer i
i NYN 90le9 October 26, 1990 l
United States Nuclear Regulatory Commission l
Washington, D.C.
20555 Attention:
Document Control Desk-
References:
(a)
Facility Operating License No. NPF 86, Docket No. 50 443 f
l (b)
PSNil Letter (SBN 1168), dated July 22,1986, 'Seabrook Station Offsite f~
Dose Calculation Manual,-(ODCM); Revised Manual, G. S. Thomas to V. S. Noonan (c)
October 16, 1990 Meeting between NHY and NRC, Noticed, September 28, 1990
Subject:
Request for Offsite Dose Calculation Manual Review.
3 Gentlemen:
f The New I!ampshire Yankee (NHY) Offsite Dose Calculation Manual (ODCM)-
currently cont ins two restrictions in Part A' which lower the limits for Method I gaseous dose calculations and prohibit the use of the existing NHY Method 11 gaseous and liquid i
dose calculations. These restrictions were discussed in our recent meeting with the NRC Staff
{
(Reference (c)]. The restrictions were added (Reference (b)] as part of the Staff's final review and approval of the ODCM methodologies. The restriction on-the use of Method Il dose calculations prohibits the use of current meteorology in the formulation of the Semi-annual Radiological Effluent Release Report as required by-Seabrook Station Technical Specification 6.8.1.4 1
In order to address NRC concerns identified during the initial ODCM ~ review and a
facilitate the preparation of the Semiannual Radiological Effluent Release Report,' NHY has prepared a revision to the ODCM to incorporate the use of those methodologies which were previously restricted by the Staff. This -revision utilizes an enhanced atmosphic, diffusion model for Method I calculations and incorporates the principles of Regulatory Guide 1.109,
" Calculation of Annual Doses to Man From Routine Releases of Reactor Effluents for the 1
Purpose of Evaluating Compliance with 10CFR' Part 50, AppendixEl", in 'the Method.II.
I calculations. The revision contains those changes that were discussed during our October 16, 1990 meeting in your White Flint office and provides the basis and justification for the 1
removal of the restrictions.
R in accordance with our previous commitment to submit the ODCM to the.NRC.by October 26,m1990, the revised ODCM is provided in Enclosure 1.
The proposed restriction 9011020191 9010'6 2
i PDR ADOCK 05000443 P
PDC DOh New Hampshire Yankee Division of Public Service Company of New Hampshire a
P.O. Box 300
- Seabrook, NH 03874 = Telephone (603) 474 9521 ~
8 ll k,
il 1
-I i
United States Nuclear Regulatory Commission October 26, 1990 Attention:
Document Control Desk Page two deletion is shown on marked up page A.11 of Part A ad the revisions to Part B are noted by revision bars in the right hand margin. A description of the atmospheric r"Susion model-for the ODCM Part B dose calculations is provided in Enclosure 2.
As discussed in the meeting, New ilampshire Yankee respectfully requests approval of this proposed change by December 15, 1990 to allow the ODCM to be utilized in the l
preparation of the Semiannual Radiological Effluent Release Report. New Hampshire Yankee believes that this schedule provides sufficient time for NHY and NRC to allow preparation of the report without need for regulatory relief.
Should you have any questions regarding this request, please contact Mr. James M.
Peschel, Regulatory Compliance Manager, at (603) 474 9521, extension 3772.
Very truly yours, fjjYO A
Ted C. Feigenbaum Enclosure (s)
TCP:JMP/ssi cc:
Mr. Thomas T. Martin Regional Administrator United States Nuclear Regulatory Commission -
Region 1 475 Allendale Road 1
King of Prussia, PA 19406 Mr. Noel Dudley NRC Senior Resident inspector P.O. Box 1149 Seabrook, NH 03874 Mr, Victor Nerses, Sr. Project Mgr.
I Project Directorate 1-3 Division of Reactor Projects U.S. Nuclear Regulatory Commission Washington, DC 20555 I