ML20003D352

Responds to NRC 810310 Telcon Requesting Addl Info Re License Change Application 70.Updated Table 2 Reflecting Final Cycle 4 Design Encl.Prompt Approval Requested to Avoid Impacting Spring Refueling Outage

ML20003D352
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	03/20/1981
From:	Broehl D PORTLAND GENERAL ELECTRIC CO.
To:	Clark R Office of Nuclear Reactor Regulation
References
TAC-43444, NUDOCS 8103260592
Download: ML20003D352 (3)

Text

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l March 20, 1981 Trojan Nuclear Plant Docket 50-344 License NPF-1 Director of Nuclear Reactor Regulation ATTN:

Mr. Robert A. Clark, Chief Operating Reactors Branch No. 3 Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, DC 20555

Dear Sir:

On February 5,1981 License Change Application (LCA) 70 was submitted requesting permission to use two dummy stainless-steel-rodded fuel assemblies for two additional fuel cycles at the Trojan Nuclear Plant.

A telephone conversation was held on March 10, 1981 with M. Chatterton of the NRC to discuss this LCA.

In response to an NRC request made during that conversation, Table 2 of the typical evaluation contained in LCA 70 has been updated to reflect the final Cycle 4 design and is attached to this letter. Only minor changes were necessary as a result of the final design. Table 3 of LCA 70 was also reviewed; however, no changes to this table were necessary.

The remaining NRC questions were resolved during the telephone conver-sation. However, it was noted that the NRC reviewer was reluctant to approve the LCA for an additional core cycle beyoad Cycle 4 without having first reviewed the modified fuel assembly locations and the corresponding impact on the core design. We would be receptive to an amendment that would allow use of the two modified assemblies in the Cycle 4 core and also require submittal of an update of the information contained in LCA 70 in letter form (as opposed to the form of a new LCA) prior to use of the modified assemblies in a core cycle after Cycle 4.

This type of approach would eliminate the need for a redundant LCA and would eliminate needless paper work and delays, but it would not eliminate the submittal of the appropriate data to the NRC. We would be happy to discuss this matter further with members of your staff.

8103 26 oS9a

Mr. Robert A. Clark March 20, 1981 Page two However, prompt approval of LCA 70 for Cycle 4 is still required in order to avoid impacting the spring refueling outage at Trojan.

Sincerely, Attachment c: Lynn Frank, Director State of Oregon Department of Energy i

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3L WESTINGHOUSE PROPRIETARY CLASS 3 TABLE 2 TROJAN CYCLE 4

SUMMARY

DESIGN 1 LOADING PATTERN

• 150 MWD /MTU Burnup Cycle 4 Nominal Cycle 3 Burnup Core Condition EOC3=9600 MWD /MTU HFP CB = 1012 ppm FAH @ Location **

ARO 1.361 (3,1)

D In 1.392 (2,7)

D+C In 1.615 (4,7)

HZP CB = 1150 ppm F4H @ Location l

ARO 1.408 (4,2)

D In 1.426 (7,2)

D+C In 1.779 (4,7)

• BOL ARO HFP: CB =-1319 ppa & FAH = 1.350 @ (4,5)

• • Locations are designated in quartercore notation GAZ/LSP/4 caw!B6

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