ML20138M875
| ML20138M875 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 12/12/1985 |
| From: | Williams J TOLEDO EDISON CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| 1225, NUDOCS 8512230199 | |
| Download: ML20138M875 (3) | |
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g Docket No. 50-346 TOLEDO EDISON License No. 1173
. Serial No. 1225 JOE WILUAMS, JR.
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[419)249-2300 December 12, 1985 (4191249-s223 Mr. John F. Stolz, Director PWR Project Directorate No. 6 Division of PWR Licensing - B United States Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Stolz:
This letter revises the Toledo Edison Implementation Schedule (or Integrated Living Schedule) submitted to the Nuclear Regulatory Commission (NRC) on October 30, 1984 (Serial No. 1092).
The completion dates for two Category B items (NRC required) are being revised. Activity No. 10, Small Break LOCA Test Program (Task No. 185300) is being revised to reflect the total scope of Toledo Edison's involvement in the B&W Owners Group Integral System Test project and Activity No. 283, Replace CTR RM DR 509 and CAS DR (Task No. 183009) is being rescheduled to allow the modification to be performed in the most expedient manner. Attachment 1 outlines the specific justification for the schedule changes.
As outlined in our Integrated Living Schedule Program Plan submittal, dated June 25, 1985 (Serial No. 1154), the revised completion dates for these projects will become effective 30 days from the date of this letter.
Very truly yours, kw k J-/w JW:DJS Attachment ec: DB-1 NRC Resident Inspector THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO, OHIO 43652 l[l 8512230199 851212 PDR ADOCK 05000346 P
~. J ILSP CATEGORY A&B COMPLETION DATE (ACTIVITY 7)
CHANGES SINCE PRIOR SUBMITTAL A.
Task No. 185300 SBLOCA Analysis ILSP Schedule Extension Justification
Background
Toledo Edison (TED) ILSP 1985 Implementation Schedule forwarded to the USNRC on October 30, 1984 (ref. Serial No. 1092) gave a completion date of January 6, 1986, for completing the Small Break Loss of Coolant Accident (SBLOCA) Project. The January 6, 1986 completion date did not depict TED's addition of the Multiple Integral Systems Test (MIST) project which is scheduled for completion in December of 1987. This represents a change in schedule from that submitted to the NRC in Serial No. 1092.
Justification The existing ILSP implementation schedule date of Jan. 6, 1986, only reflects the 1985 work scope for the IST project.
B.
Task No. 183009 Control Room Door Replacement ILSP Schedule Extension
' Justification
Background
Toledo Edison (TED) ILSP 1985 Implementation Schedule forwarded to the-USNRC on October 30, 1984 (ref. Serial No. 1092) gave a completion date of April, 1985, for completing the replacement of the Control Room entrance doors, Door 509 (ref. Drawing A-205F). As a corrective action to License Event Report (LER)82-061 TED committed to replace Door 509 with a newly developed bullet proof, fire rated door which would still be capable of withstanding the positive pressure associated with actuation of the Control Room Emergency Ventilation System (EVS).
Justification During detailed engineering design, a better resolution to the proposed corrective action evolved. This resolution, as described in Facility Change Request (FCR)83-009, Revision B, is to replace Door 512 with a Class A, bullet resistant, airtight, security door, and include Rooms 508, 509, 510, 511, 512, and 513 in the Control Room fire area boundary.
Door 509 will no longer be a fire barrier and would require no further modification.
A cost versus benefit analysis revealed that not only is the new alterna-tive more cost justifiable but it will also delete the requirement that the door be operable as defined in Technical Specification 3.7.10.
This derating sill alleviate the requirement for an hourly fire watch patrol while ensuring technical specification compliance.
d
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Replacement of CAS Door 512 will result in substantial quantities of dust and debris when the door frame is removed. Even with dust control cur-tains, there is a high probability that foreign material will get into the CAS computer equipment, thus compromising the CAS computer operations.
Accordingly, we plan to delay implementation of FCR 83-009 Revision B, until the new CAS equipment is received and operational. Completion of ILSP Task 183009 is now scheduled for March, 1986.