ML20085F624

Amend 1 to Change Request 31 to License DPR-4 Re Fuel Bearing Rods

ML20085F624
Person / Time
Site:	Saxton File:GPU Nuclear icon.png
Issue date:	04/19/1968
From:	Neidig R SAXTON NUCLEAR EXPERIMENTAL CORP.
To:
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References
FOIA-91-17 NUDOCS 9110220251
Download: ML20085F624 (2)

Text

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SAITON NUCLEAR EXPERIMENTAL CORPGIATION DOCKL7 NO. 50-lh6 LICENSE DPR-h-Amendment No. 1 to Change Request No. 31

1. Applicant hereby submits Amendment No.1 to Change Request No. 31' supplying additional information requested oy Division of Reactor Licensing.

SAXTON NUCLEAR EXPERIMMTAL C0llPORATION by /s/ H. E. Neidig President C

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April 19, 1968 N 9110220251 910424 PDR FOIA DEKOK91-17 PDR 141

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1. The two fuel bearing ri.de described in Paragraph 1.1 of Change Request flo. 31 are clad vith Zirealoy-4 having a nominal thickness of 23 3 mils instead of 23.5 mils as stated.

2 The four rods in the 2x2 subaccombly are arranged on a square pitch of 0.58 inches. The pite,

• the two fuel bearing rods, which occupy one diagonal of ths duassemb(v, is 0.82 inches.

3. In Peragraph 3 of Change Roquest IJo. 31, reference is made to l

.reviously approved Change llo. 20.

During the revivw of Change Request lio. 20, Division of Reactor Licensing infonned S!lEC that the hot channel factors, heat fluxes and D!iB ratios did not setn compatibic and asked for a re-evaluation.

In Table 3, page 7, of request, the hot channel factors listed (Fq = 1.72 and FoH = 1.22) for the 4-rod SubassembAy VI operating in the central core location were assembly peak to assembly average values. ! Jew values for the hot channel factors (Fqa 6.44 and FaH = 4.56) based on assembly peak to core average were reported to Division of Reactor Licensing. The new values were used in the Safety Evaluation by the Research and Power Reactor Safety Branch, Division of Recetor Licensing.

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