ML20195C233

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Informs That Revised SPDS Design Will Be Submitted by 861231,per 860407 Ser.Design Currently Under Review to Remove Human Engineering Discrepancies within Sys & Change Displays
ML20195C233
Person / Time
Site: Rancho Seco
Issue date: 05/21/1986
From: Julie Ward
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Miraglia F
Office of Nuclear Reactor Regulation
References
JEW-86-022, JEW-86-22, TAC-56525, TAC-56526, NUDOCS 8605300178
Download: ML20195C233 (2)


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$SMUD q W'A ' i SACRAMENTO MUNICIPAL UTILITY DISTR'CT C P. O. Box 15830 Sacramento CA 95852-1830,(916) 452-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA JEW 86-022 May 21,1986 DIRECTOR OF NUCLEAR REACTOR REGULATION ATTENTION FRANK J MIRAGLIA JR DIRECTOR PWR-B DIVISION U S NUCLEAR REGULATORY COMMISSION WASHINGTON DC 20555 DOCKET 50-312 RANCHO SECO NUCLEAR GENERATING STATION UNIT NO. 1 SAFETY PARAMETER DISPLAY SYSTEM

Reference:

John F. Stolz (NRC) to R. J. Rodriguez (SMUD) dated 4/7/86 The above reference contained an NRC Safety Evaluation Report (SER) on the Rancho Seco Safety Parameter Display System (SPDS). The NRC developed the SER af ter a visit to Rancho Seco during June 19 - 21, 1985 by members of the Control Systems Branch. The findings discussed in the SER include the need to improve the human factors engineering of the Rancho Seco SPDS. The improvement is aimed at allowing a "... user to rapidly and reliably evaluate all of the critical safety functions required by the NRC."

In order to accomplish the above, the District is currently reviewing the Rancho Seco SPDS design to remove human engineering discrepancies within the system. This review has already resulted in a rearrangement of the alphanumeric displays to present a more " structured" and useable display.

The District, in light of the NRC comments, is re-examining the displays and will make appropriate changes as necessary. In addition to the alphanumeric review, the District is analyzing which radioactivity signals it will add to the SPDS displays.

The District, af ter completing the above reviews by July 31, 1986, will submit a revised SPDS design to the NRC by December 31, 1986. The District will then schedule the implementation of the modification in accordance with its Living Schedule process.

8605300178 860521 yDR ADOCK 05000312 PDR h i go DISTRICT HEADQUARTERS O 6201 S Street. Sacramento CA 95817-1899

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Frank J Miraglia May 21,1986 If you have any questions, please contact Jerry Delezenski of my staff at (916) 452-3211, extension 4909.

.h J. E. WARD ASSISTANT GENERAL MANAGER, NUCLEAR