ML17180B054
| ML17180B054 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities  |
| Issue date: | 12/23/1994 |
| From: | Schrage J COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17180B055 | List: |
| References | |
| NUDOCS 9412290313 | |
| Download: ML17180B054 (2) | |
Text
CommoAalth Edison 1400 Opu~~ce Downers Grove, Illinois 60515 December 23, 1994 Office of Nuclear Reactor Regulation U.S. Nuclear Reactor Regulation Washington, D.C. 20555 Attn:
Document Control Desk
Subject:
References:
Gentlemen and Ladies:
Dresden Station Units 2 and 3 Quad Cities Station Units 1 and 2 Individual Plant Examination (IPE); NRC Request for Additional Information (RAI)
NRC Docket Nos. 50-237/249 and 50-254/2_65 (1)
(2)
(3)
(4)
(5)
(6)
(7)"
M. Jackson to T.E. Murley letter dated January 28, 1993.
M. Vonk to T.E. Murley letter dated December 13, 1993.
J. Stang to D. L. Farrar letter dated August 24, 1994.
C.P. Patel to D.L. Farrar letter dated June 9, 1994.
P.L. Piet to USNRC letter dated October 28, 1994 J.L. Schrage to USNRC letters dated August 8, 1994, October 3, 1994; and December 13, 1994.
Teleconference between ComEd (J. Schrage, et al) and USNRC (R. Pulsifer, et al) on December 5, 1994 In References (1) and (2), Commonwealth Edison Company (ComEd) submitted the Individual Plant Examination (IPE) for Dresden Station Units 2 and 3 and Quad Cities 'Station Units 1 and 2. In the Reference (3) and (4) Requests for Additional Information (RAI), the NRC staff identified additional information which would be required in order to review and approve the IPEs for Dresden Station and Quad Cities Station. ComEd provided the required information in the Reference (5) letter for Dresden Station and the Reference (6) letters for Quad Cities Station.
In the Reference (7) teleconference, the NRC Staff requested clarification of ComEd' s
- response to Question 2 of the Quad Cities IPE RAI (Reference (6)). Specifically, the NRC Staff requested documentation of the screening methodology for plant-specific initiators when including these initiators into the general transient initiators.
In response to that request, ComEd is providing Sections 1, 2, and 3 from the "Quad Cities Initiating Notebook" as Enclosure 1. These sections address the sources for identifying initiating events, the initiators that were applicable to Quad c;i~ies Station, and the disposition of each of the initiators.
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9412290313 941223 J
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PDR 1
U. November 30, 1994 In addition to the information provided in Enclosure 1, the NRC Staff requested information pertaining to the* recovery from a Loss of Offsite Power at Dresden Station. Enclosure 2 provides a copy of Calculation Note - DR-CN-92-006, "Recovery of Power Probabilities for Dresden IPE."
To the best of my knowledge and belief, the statements contained herein are true and correct.
In some respects, these statements are not based on my personal knowledge but obtained information furnished by other Commonwealth Edison employees and consultants. Such information has been reviewed in accordance with Company practices and I believe it to be reliable.
We trust that the information provided herein is satisfactory; however, should you have any questions, or desire any additional information on this issue, please do not hesitate to contact.this office.
Very truly yours, L. Sc rage Nuclear Licensing Administrator Enclosures 1 and 2 cc:
J. Martin, Regional Administrator - Region III M. Leach, Senior Resident Inspector - Dresden Station C. Miller, Senior Resident Inspector - Quad Cities Station J. Stang, Project Manager - NRR R. Pulsifer, Project Manager - NRR E. Lois, RES/SAIB Office of Nuclear Facility Safety - IONS k:\\nla\\quad\\rairev4. wpf