ML20116G049

Informs That Listed Electrical Sys Drawings Sent to J Miller of NRR for Review,Per 840410 & 12 Requests.Copy of Logic Diagrams Being Prepared by I Ahmed Requested

ML20116G049
Person / Time
Site:	Fort Saint Vrain
Issue date:	04/12/1985
From:	Warembourg D PUBLIC SERVICE CO. OF COLORADO
To:	Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
P-85130, TAC-55287, NUDOCS 8505010351
Download: ML20116G049 (2)

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O PublicService Company of Colorado P.O. Box 840 2420 W. 26th Avenue, Suite 1000, Denver, Colorado 80211 gr c m201 - 0840 April 12, 1985 Fort St. Vrain Unit No. 1 P-85130 Regional Administrator b $ @ [2 0M @ S Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 N22N Arlington, Texas 76011 j Attn: E. H. Johnson Docket No. 50-267

SUBJECT:

Drawings for Electrical Review

REFERENCE:

Phone Requests of April 10 & 12, 1985

Dear Mr. Johnson:

The following drawings are being sent to Mr. Jim Miller NRR at the request of Mr. Icbal Ahmed.

E-1203 P.3 Schematic Diagram Fast 4Ky ATO Lockout Relay 86GT2

-E-1203 P.4 Schematic Diagram Trip 4Kv Breaker Fan Lockout Auxiliary Relay 62XT E-1203 P.5 Schematic Diagram Close 4Kv Breaker Fail Lockout Auxiliary Relay 62XC E-1203 P.6 Schematic Diagram Tie, BFP, HTC 4KV Breaker Fail Lockout Auxiliary Relay 62BF

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E-1203 P.22 Schematic Diagram 480V Buses 1,2,&3 Auxiliary Hand Reset Relays E-1203 P.32 Schematic Diagram - Unit Auxiliary Trip Relay N-9205 Dev.86T1(XRA-92128)

E-1203 P.35 Schematic Diagram 480V Switchgear 125V DC Breaker Feeds E-1203 P.1603 Schematic Diagram Auxiliary Relays and Lockout Switches for Programmers E-1203 P.2201 Degraded Voltage Bus 1 Phase A, Phase B, Phase C E-1203 P.2202 Degraded Voltage Bus 2 Phase A, Phase B, Phase C E'-1203 P.2203 Degraded Voltage Bus 3 Phase A, Phase B, Phase C E-1203 P.2218 Loss of Voltage, ATO, and Coincidence Logic Bus 1,2,&3 E-1040 Wiring Diagram 4160V Switchgear Bus 3 Unit 20 N-9207 E-1201 Relaying and Metering Diagram Generator 1 4160 and 480V Switchgears E-1209 Schematic Diagram Generator 1A, Engine 1A, 18 and Generator 1B Engine IC, ID Control Relays PSC will appreciate receiving a copy of the logic diagrams being prepared by Mr. Ahmed for information on the review being performed on the Fort St. Vrain electrical system.

PSC is agreeable to a meeting to discuss the staff review of the FSV electrical system at the appropriate time. Please keep us advised on the progress of the staff review and if we may be of further assistance.

'ery truly yours,

~ Don W. Warembourg, Manager Nuclear Engineering Division DWW/WK:pa L J