ML20079L206

Commits to Funding Fuel Surveillance Program.One Fuel Rod from Cracked Segment 2 Fuel Element Sectioned & Examined Using Metallographic Techniques to Confirm Predicted Fuel Performance

ML20079L206
Person / Time
Site:	Fort Saint Vrain
Issue date:	02/10/1983
From:	Lee O PUBLIC SERVICE CO. OF COLORADO
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
P-83058, TAC-57625, NUDOCS 8302230174
Download: ML20079L206 (2)

Text

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g PUBLIC SERVICE COMPANY OF COLORADO P. O. BOX 840 + DENVER.

COLORADO 80201 February 10, 1983 Fort St. Vrain OscAn n. us Unit No. 1 viec - e.ioc'"

P-83058

> 7 k v Mr. John T. Collins

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N Regional Administrator U.S. Nuclear Regulatory Commission I

g[4{9g Region IV I

y 611 Ryan Plaza Drive, Suite 1000 x

a Arlington, TX 76011 Qg,

SUBJECT:

Commitment to FSV Fuel Surveillance

REFERENCES:

1)G-83042,2)P-81322

Dear Mr. Collins:

PSC has reviewed the letter from Glen L. Madsen to 0.R. Lee dated January 24, 1983 (G-83042) conceraing the modification of the Fort St.

Vrain post-irradiated fuel element surveillance program. The above mentioned letter stated that the elimination of the destructive examination of a Segment 2 fuel assembly as proposed by PSC in P-81322 is acceptable, but ti,at supplemental destructive examinations should be performed.

These examinations were deemed necessary to confirm that kernel migration remains less than the maximum migration limit set forth in the FSAR of 20 microns.

In examination of fuel rods from Segment 1, no kernel migration was observed, and none was expected (metallographic lower detectable limit is 3 to 4 microns).

PSC hereby commits to funding:

1) one fuel rod from a cracked Segment 2 fuel element to be sectioned and examined using metallographic techniques to confirm predicted fuel performance (with respect to fuel kernel migration) and, 2) one reference fuel rod from fuel element FTE-2 to be examined in a similar fashion after removal from the reactor following cycle 3.

bd 8302230174 830210

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PDR

a P-83058 Paga 2 i

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This commitment is expressly. contingent on the availability of EDE funding for the basic destructive examination (shipping, hot cell disassembly for examination, and fuel element disposal) of both the Segment 2 cracked block and fuel element FTE-2.

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2 If PSC-can be of further assistance,~ or if you have any questions regarding this matter, please let us know.

Very truly yours,

0. R. Lee, Vice President Electric Production ORL/SH:pa l

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