ML20211P822
| ML20211P822 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 12/15/1986 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Rubenstein L Office of Nuclear Reactor Regulation |
| References | |
| 86-053A, 86-53A, NUDOCS 8612190144 | |
| Download: ML20211P822 (2) | |
Text
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VIMUINIA ELECTHIC AND l'OWHH COMPANY Rienxown,Vinorx A 20261 w.L.sTEWANT Vars Panmanmar NrcLuan Oramarions December 15, 1986 fir. Harold Denton, Director Serial No.
86-053A Office of Nuclear Regulation DJV/dmk Attn: ifr. Lester S. Rubenstein, Director Docket Nos.
50-338 PWR Project Directorate No. 2 50-339 Division of PWR Licensing-A License Nos.
NPF-4 U. S. Nuclear Regulatory Commission NPF-7 Washington, D. C.
20055 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY NORTIDUUTA POWER STATION UNITS NO.1 AND 2 SAFETY PARAMETER DISPLAY SYSTEM COMPLETION SCHEDULE AND STATUS Virginia Electric and Power Company letter dated April 15, 1983 provided our response to NUREG-0737, Supplement 1, including our plan and schedule for implenentation of a Safety Parameter Display S (SPDS) and Emergency Response Facilities Data Acquisition System (ERFDAS)ystem at our North Anna Power Station. SPDS implementation has been tied to completion of the ERFDAS. ERFDAS includes SPDS as well as the data transmission capabilities required for the Technical Support Center and Emergency Operations Facilities.
By subsequent correspondence we submitted a Safety Analyses Report (SAR) for the SPDS (our letter dated February 1,1984) and a revised completion date of October 1,1986 for having the SPDS fully operational with procedures in place and operators / users trained (our letter dated 11 arch 7,1986).
This letter is to inform you of the status of implementation of the SPDS at North Anna and to specify a new completion date.
In summary, the ERFDAS is functional and capable of providing the real time data and trending of selected plant parameters required for the emergency response facilities. The SPDS, which is comprised of the top, mid and low level displays only, is presently functioning as described in our February 1,1984 letter and the intended users of the SPDS including operators and other emergency response facilities staff have been trained in the function of the SPDS. However, the SPDS cannot be declared fully operational at this time for the following reasons.
PROCEDURES AND TRAINING Virginia Electric and Power Company has identified the principal user of the systen as the Shift Technical Advisor. Others who will also access and use the information displayed by the SPDS include the Shift Supervisor and portions of the staff in the Technical Support Center, Local Emergency Operations Facility and Corporate Emergency Response Center. Control Room operators may also use the system but only in con.iunction with qualified indications in the control
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v room. Selected personnel from these groups have been trained with regard to interfacing with the system.
However, the specific SPDS users who will be manning the Emergency Response Facilities and who need to complete appropriate training programs must yet be identified.
Furthermore, specific precedures delineating and assigning specific responsibilities and activities necessary for maintaining and using the SPDS during normal and emergency operations are being developed. Training on the SPDS capabilities has been conducted and additional training on its use and maintenance, including the procedures now under development, has yet to be completed.
Procedures must also be developed or existing procedures modified to ensure that plant evolutions are properly controlled with respect to the SPDS inputs and that the SPDS computer hardware is properly maintained.
SYSTEM DEFICIENCIES Certain technical deficiencies have been identified with the SPDS, particularly in the areas of alarm setpoints and incorrect instrument inputs.
Specifically, the SPDS alarm setpoints for certain radiation monitors must be verified against actual setpoints and may additionally require certain software modifications.
Setpoints which have been affected by the recent core uprate must be updated, some instrument inputs require recalibration or test, and a problem with excessive noise in certain millivolt inputs (i.e.,
core thermocouples)mustbeaddressed.
We expect to complete these activities and declare the SPDS fully operational by May 1, 1987.
Furthermore, Virginia Electric and Power Company will submit a revised SAR for the SPDS within six months of declaring it operational.
This revised SAR will reflect the changes that have been made to the SPDS described in our original SAR as a result of implementing this system at North Anna.
If you have any question on this matter please contact us.
Very truly yours, s
W. L. Stewart cc: Dr. J. Nelson Grace Regional Administrator NRC Region II Mr. J. L. Caldwell NRC Senior Resident Inspector North Anna Power Station Mr. Leon B. Engle NRC North Anna Project Manager PWR Project Directorate No. 2 Division of PWR Licensing-A