ML18114A216
| ML18114A216 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  (DPR-067, NPF-016) |
| Issue date: | 03/31/1978 |
| From: | Robert E. Uhrig Florida Power & Light Co |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18114A216 (6) | |
Text
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FURNISHING INFO DESCRIBING THE EDDY CURRENT TEST FUEL PLANS TO MAKE DURING THE REFUELING OUTAGE WHICH BEGAN COPIES RECEIVED LTR 3 ENCL 0 INSPECTIONS APPLICANT QN,ggPRCH -28r 1978.jji I
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+1uvs4 FLORIDAPOWER 8( LIGHTCOMPANY March 31, 1978 L-78-111 Office of Nuclear Reactor Regulation Attention:
Mr. Robert W. Reid Operating Reactors Branch N4 Division of Operating Reactors U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555
Dear Mr. Reid:
Re:
St. Lucie Unit 1 Docket No. 50-335 Fuel Inspection Program Q/~At~
I Og 6'
The purpose of this letter is to describe the Eddy Current Test (ECT) fuel inspections we plan to make during the refueling out-age which began on March 28, 1978.
The following is a description of the program as it presently stands:
Basically two types of inspection are planned during the outage:
(a)
Eddy Current Test (ECT) inspections to determine the extent of guide tube wear and, (b)
Visual inspections of a selected number of shimmed fuel assembly upper end fittings with particular attention to the retainer plates which were added during the 1976 Fuel Reconstitution Period.
Amend-ment No.
10 to the operating license requires a
visual inspection of a representative number of re-paired. assemblies to confirm that the retention assemblies are performing as expected.
The ECT program will consist of bobbin coil measurements on all 82 assemblies under CEAs in Cycle 1.
These measurements will be made in the reactor core.
Bobbin coil testing provides data which allow determination of the need for further (azimuthal) eddy current testing, prior to fuel movement.
Contingent on these
- results, we expect to perform azimuthal ECT testing on 10 to 22 assemblies (also while the fuel is still in the core).
These 10 to 22 assemblies will be thos'e exhibiting the worst indications of wear as evidenced by the bobbin coil data.
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780970248 PEOPLE.,'. SERVING PEOPLE
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Re:
St. Lucie Unit 1 Docket No.
50-335 Fuel Xns ection Pro ram Following this, based on the eddy current t f
1 bl
h rvxce under CEA n
ycle w ic ad seen serv'ssemblies (mainly "A" bl' spent fuel pool eitherer as permanently discharged ing prior to return t assem lies) or as as o service in Cycle 2.
Thi 1'emblies requiring sleev-include up to twenty (20)
"C" assembli o e (1) e y
nd
)
mbly will be chosen o
ments.
um wear as evidenced b
um the bobbin coil measure-All assemblies previously under CEAs will e
e e
in e core if they are to be sleeved.
Xnn summary, our planned EC ECT inspection program includes:
Xn-Reactor
82 assemb'i em lies, bobbin measurements 10-22 assembliies, azimuthal measurements The visual inspection of retainer la teen (14) assemblies.
r p ates will include at least four-We will keep you informed of si nifican g
t addxtxons or changes t t o
- course, advise ou of o
e when they are ava'1 bl Very truly yours, Robert E. Uhrig Vice President REU/MAS/lc cc:
Mr. James P. O'Reilley, Region XX Harold F. Reis, Esquire Mr. Peter B. Erickson
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