ML20154M713

Advises That Commitment to Implement New Nomograms for Calculating Site Boundary Thyroid Dose Rates Met & Modifies Implementation Date of Upgraded HP41-C Calculator Methodology Until 881231

ML20154M713
Person / Time
Site:	Yankee Rowe
Issue date:	05/25/1988
From:	Papanic G YANKEE ATOMIC ELECTRIC CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
FYR-88-77, NUDOCS 8806020046
Download: ML20154M713 (2)

Text

-e

' Telephone (617) 872-9100 TWX 710 380-7619 o

, YANKEE ATOMIC ELECTRIC COMPANY

~7 g

y 1671 Worcester Road, Framingham, Massachuse.*ts 01701 May 25, 1988 FYR 88-77 i United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

References:

(a) License No. DPR-3 (Docket No. 50-29)

(b) Letter, USNRC to YAEC, dated June 2, 1987 (c) Letter, YAEC to U9NRC, dated July 16, 1987 *

Subject:

Emergency Response Facility Audit Open Item

Dear Sir:

One of the open items from the Region 1 inspection report of the Emergency Response Facilities (ERF) appraisal conducted at the Yankee Nuclear Power Stati n during the period of March 30, 1987 through April 3, 1987 (Reference (b)) was as follows:

"The licensee does not have the capability to calculate a site boundary thyroid dose from the Control Room and TSC (50-29/87-05-04)."

In our initial response to this open item (Reference (c)), we committed to implementing three new nomograms for calculating site boundary thyroid dose rates by February 1988. This commitment has been met. We also committed to upgrade our handheld programmable HP41-C calculator methodology to project site boundary thyroid dose rates by June 1988. The intent of this letter is to modify the implementation date of the upgraded HP41-C calculator methodology until the end of December 1988.

This modification of implementation date of the upgraded HP41-C calculator methodology is to allow us time to convert the functions of the i HP41-C calculator onto a lap-top microcomputer. The conversion to a lap-top computer will allow the software to be developed and maintained in a standard programming language (e.g., BASIC or FORTRAN). The increased capability of a l lap-top microcomputer will also result in the development of a software package which would produce dose projections more compatible with the more sophisticated PC-based dose projection methodology used in the EOF. The postponement of implementation of the lap-top dose prejection methodology will l

i l

l l

r 1 O 8806020046 DR 880525 '

ADOCK 05000029 DCD 1

l

, ' United States Nuclear Regulatory Commission May 25, 1988 Page 2 FYR 88-77.

1

-)

not affect the Control Room or TSC's ability to project site boundary thyroid i dose rates since site boundary thyroid dose rate nomegrams have already been I developed and implemented.

If you have any quertions, please contact us.

't Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY' 4- ,~--

Georg Papanic, r.

Senior Project Engineer Licensing GP/25.606 cc: USNRC Region I USNRC Resident Inspector, YNPS i

i i

w-,-w-~ . m-- -

e- - -, e.,, ,-,.en--..-_,.,,n _ , , , , _ . , . _ , , , _ _ _ . . . _ _ _ , ._ , , ,