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MONTHYEARML19294C8571980-09-0303 September 1980 Forwards Auxiliary Feedwater Sys Reliability Evaluation & Request for Addl Info Project stage: RAI ML19352A9601981-05-22022 May 1981 Forwards Responses to NRC Re Auxiliary Feedwater Sys Reliability Analysis Evaluations.Manual Valves in Suction & Discharge of Auxiliary Feedwater Pumps Are Locked & Administratively Controlled Project stage: Other ML20064L2821982-05-10010 May 1982 Auxiliary Feedwater Sys Automatic Initiation & Flow Indication (F-16,F-17) Project stage: Other ML20058H9131982-08-0303 August 1982 Forwards Application to Amend License NPF-3 Allowing Sway Struts to Replace Snubbers on Relocated Pressurizer Code Safety Valves Project stage: Request ML20065C1951982-09-14014 September 1982 Responds to Re Status of NRC Review of Auxiliary Feedwater Sys Reliability Evaluation Conducted Per NUREG-0737,Item II.E.1.1.Comments &/Or Clarification of Position on NRC Status Encl Project stage: Other ML20071P6431982-12-15015 December 1982 Responds to NRC Re NUREG-0737,Item II.E.1.1, Auxiliary Feedwater Sys Reliability Evaluation & Request for Util Commitment to Recommendation GS-6.Suggested Changes to Tech Specs Not Warranted Project stage: Request ML20070M7931983-01-20020 January 1983 Provides Addl Clarification Re Condensate Storage Tanks. Tanks Are cross-connected,allowing Either Tank to Act as Common Suction Water Supply for Auxiliary Feed Pumps Project stage: Other ML20071F0681983-03-11011 March 1983 Responds to NRC Re TMI Item II.E.1.2, Auxiliary Feedwater Sys Automatic Initiation & Flow Indication. Surveillance Requirements Will Be Revised by 830430 to Allow Functional Test on Output Relay Contacts Project stage: Other ML20077J0981983-08-0909 August 1983 Responds to Re NUREG-0737,Item II.E.1.1 Auxiliary Feedwater Sys Evaluation. Condensate Storage Tank cross-connect Valves CD163 & CD164,on Drawing M-006A, Will Be Locked Open Project stage: Other ML20082E5991983-11-21021 November 1983 Forwards Application for Amend to License NPF-3,requesting Rev to Tech Spec to Remove 480-volt Ac Power from DHR Isolation Valves During Modes 1,2 & 3 When Valves Closed Project stage: Request ML20082E6181983-11-21021 November 1983 Proposed Tech Spec Changes,Section 4.5.2.d & Table 3.3-10 Re DHR Isolation Valves Project stage: Other ML20082E6141983-11-21021 November 1983 Application for Amend to License NPF-3,revising Tech Spec Section 4.5.2.d & Table 3.3-10 Re Removing 480-volt Ac Power from DHR Isolation Valves During Modes 1,2 & 3 When Valves Closed Project stage: Request ML20092B9331984-05-30030 May 1984 Amend 68 to License NPF-3,changing Tech Spec Table 3.3-10, Post-Accident Monitoring Instrumentation, to Specify Two Auxiliary Feedwater Flow Rate Indicators Per Steam Generator Project stage: Other 1982-09-14
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MREDO
%mm EDISON Docket No. 50-346 Na[cm same License No. NPF-3
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Serial No. 898 January 20, 1983 Director of Nuclear Reactor Regulation Attention:
Mr. John F. Stolz Operating Reactor Branch No. 4 Division of Operating Reactors United States Nuclear Regulatory Commission Washington, D.C.
20555
Dear Mr. Stolz:
On December 1, 1982 (Log No. 1144) you requested that Toledo Edison provide additional information on, among other items, redundant condensate storage tank level indication and low level alarms. Toledo Edison responded on December 15, 1982 as related to Davis-Besse Nuclear Power Station Unit No. 1.
This letter is to provide additional clarification concerning the Condensate Storage Tanks (CST's) as requested by your Mr. Al DeAgazio.
The CST's at Davis-Besse are cross-connected allowing either tank to act as a common suction water supply for the Auxiliary Feed Pumps. The cross-connect valve for each CST is locked open with administrative controls placed upon the keys. The effect of this arrangement is that the two CST's both supply water to the Auxiliary Feed Pumps and act together as one large tank. We trust this satisfies your concerns.
Very truly yours, f P%
RPC:RFP:lah cc:
DB-1 NRC Resident Inspector t
doi THE TOLEDO EDISON COMPANY ED: SON PLAZA 300 MAOISON AVENUE TOLEDO, OHIO 43652 B301250334 830120 PDR ADOCK 05000346 P
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