ML19209B472

Responds to IE Bulletin 79-18.Forwards Info Re Audibility Problems W/Alarm & Evacuation Announcement Sys in High Noise Areas.Sys Determined to Be Satisfactory W/Noted Exceptions

ML19209B472
Person / Time
Site:	Davis Besse
Issue date:	09/14/1979
From:	Crouse R TOLEDO EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 7910090765
Download: ML19209B472 (2)

Text

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Tl C TOLEDD September 14, 1979 EDISON Serial No. 1-88 Docket No. 50-346 License No. NPF-3 Mr. James G. Keppler Regional Director, Region III Directorate of Regulatory Operations U. S. Nuclear Regulatory Consission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

This letter transmits information requested by I. E. Bulletin No. 79-18 con-cerning audibility problems encountered on evacuation of personnel from high-noise areas. Attachment 1 addresses the determination as to whether current alarm and evacuation announcement systems are clearly audible or visible throughout all plant areas. Emphasis was placed on high noise areas and the necessary corrective action for identified deficiencies has been delineated.

Very truly yours, si -

Richard P. Crouse Vice Presi-ent, Energy Supply RPC/SMQ/ljk Attachment O

.y N

1117 2i3 1910 0 9076P THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO. OP'O 43652 P

Docket No. 50-346 ATTACHMENT 1 License No. NPF-3 Serial No. 1-88 AUDIBILITY PROBLEMS WITH ALAR'.i AND EVACUATION ANNOUNCEMENT SYSTEMS IN HIGH-NOISE AREAS The audibility of the station alarm and evacuation announcement system has been addressed per TP 100.01, " Communication System Preoperational Test", which was completed as of December 29, 1977. This test procedure, described under Test Abstract 100.01 in Chapter 14 of the Davis-Besse FSAR, demonstrated the capabi-lity of the station communication systen for paging, alarm signaling, and normal station communications. TP 100.01 contained the specific requirement that loud speakers and alarms (Acceptance Criteria 8.2 and 8.4, respectively) can be heard from any location in the station.

As a result of this pre-operational test, Startup Field Report SFR-E-731 was pre-pared which required extensive system adjustments be made and speakers added so that alarms would be audible at all plant locations. To date there is one out-standing deficiency which involves audibility of speakers in the Diesel Generator Rooms (Room 318, 319). Facility Change Request 77-276 will provide visual indica-tors in the Diesel Generator Rooms, so as to ensure awareness of communications for individuels in the rooms not wearing headsets when the diesels are in operation.

The materials for this particular Facility Change Request have been obtained.

Upon receipt of I.E. Bulletin No. 79-18, Facility Change Request 79-318 was pre-pared to retest the station communication system to ensure personnel would be able to hear the "ALL PLANT" page speakers that provide emergency communications and alarm functions. Facility Change Request 79-318 was conducted in all accessible rooms at the highest noise level and at the most remote location within the room.

The test was completed as of August 23, 1979, and resulted in one additional defi-ciency involving audibility of alarms in the Boric Acid Evaporator Rooms (Rooms 234, 235). Facility Change Request 79-325 will provide speakers in the Boric Acid Evaporator Rooms to eliminate the reliance on communications and alarms via speakers in adjacent rooms.

Presently the vendor for the station communication system, Gai-T: onics, Inc., is in house to provide balancing and grooming of the equipment. This independent check should enhance present system performance and is expected to be completed by the end of September.

Based on the latest test and the original efforts in this area, with the exceptions noted, it is determined that the alarm aad evacuation announcement system is clearly audible throughout all plant areas under maximum anticipated naise levels.

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