ML19291C178
| ML19291C178 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 01/07/1980 |
| From: | Moody D Maine Yankee |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0578, RTR-NUREG-578 WMY-80-3, NUDOCS 8001230070 | |
| Download: ML19291C178 (2) | |
Text
1 mom TURNPIKE ROAD (RT. 9)
$[~
ENGINEERING OFFICE WESTBORO, MASS ACHUSETTS 01581 617-36G-9011 B.3.2.1 WY 80-3 January 7, 1980 United States Nuclear Regulatory Commission Washington, D.C. 20555 Attention:
Office of Nuclear Reactor Regulation Mr. Harold Denton, Director
References:
(a) License No. DPR-36 (Docket No. 50-309)
(b) NUREG-0578-Lessons Learned Task Force Status Report and Short Term Recommendations dated July 1979 (c) USNRC Letter to All Operating Nuclear Power Plants dated September 13, 1979 (d) UNSRC Letter to All Operating Nuclear Power Plants dated October 30, 1979
Dear Sir:
Subject:
NUREG-0578, Item 2.1.8a - Post Accident Sampling Capacity The following information is provided in response to the recommendations and requests made in References (b), (c), and (d) relative to Post Accident Sampling Capability at Maine Yankee.
A design and operational review of the capability to obtain reactor coolant and containment atmosphere samples has been completed. Maine Yankee presently has the ability to perform on-line H2 Analysis, but does not have the ability at this time to take containment air samples.
A conceptual Engineering Design Change which outlines the changes which will be required to install an air sampling device has been issued.
Maine Yankee has the capability to perform isotopic analysis once the air sample has been obtained.
Maine Yankee presently has the capability to handle unpressurized and pressurized reactor coolant samples with radioactivity concentrations up to several mci /ml, which is three orders of magnitude lower than the NRC source term on reactor coolant. Sampling and analytical procedures are being revised according to the above concentration limits.
1791 208 i
son 23o07o P
t U. S. Nuclear Regulatory Commission January 7, 1o80 Mr. Harold Denton, Director Page 2 In order to meet NRC requirements relative to reactor coolant sampling capability, Maine Yankee is evaluating several alternatives. One conceptual design includes the provision of a sampling diluation capability which will allow conventional analysis techniques to be used.
Another involves an investigation into the current availability of instrumentation which can provide the required analysis by on-line monitoring.
To meet the total requirement, a combination of alternatives may be necessary.
In the evaluation of these concepts, there are a number of items which require resolution before a decision can be made as to which direction should be pursued.
Maine Yankee expects to resolve these items in time to implement the necessary modifications by January 1,1981.
We trust that this information is satisfactory; however, should additional information be required, please contact us.
Very truly yours, MAINE YANKEE ATOMIC POWER COMPANY
, b.
D. E. Moody Manager of Operations EWJ/sec 1791 209