IR 05000237/1976010

Letter Referring to the 04/29/1976 and 05/13/1976 Inspections and IE Inspection Reports 05000237/1976010, 05000249/1976009, 05000254/1976014, and 05000265/1976012 - Dresden Unit 2 and 3 and Quad-Cities Units 1 and 2

ML17252B144
Person / Time
Site:	Dresden, Quad Cities
Issue date:	05/27/1976
From:	Hind J NRC/RGN-III
To:	Brian Lee Commonwealth Edison Co
References
IR 1976009, IR 1976010, IR 1976012, IR 1976014
Download: ML17252B144 (11)

Text

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---*  A UNITED STATES  A N.LEAR REGULATORY COMMISSION  *
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REGION Ill 799 ROOSEVELT ROAD

--- - ----- ---- --------- ------ -GL:EN ELl.:VN;-ILt:INOIS '60137 Commonwealth Edison Company   Docket No.~7 AlTNi Mr. Byron Lee, J Docket No. 0-24 Vice President   Dock.et No. 50- 54 P.O. Box 767   . Dock.et No. 50-265 Chicago, Illinois 60690 Gentlemen:

This refers to the inspection conducted* on April 29 and * May 13, 1976, by Mr. c. c. Peck of this office and to the discussion of his findings with Messrs. Larson, Butterfield, _Massiu, Kuhel and other members of your staff at the conclusion of the inspection. Your activities pursuant to Title 10, Code of Federal Regulations, Part 70, "Special Nuclear Material as they pertain to Licenses No. DPR-19, No. DPR-25, No. DPR-29 and No. DPR-30 were the subject of the inspectio . ,:*

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No items of noncompliance with NRC requirements were . identified during the course of this 1.napectio ,, * The inspection consisted of an examination of the plutonium production and uranium fission and transmutation quantities that.Commonwealth Edison.has reported semi-annually on forms MRC-742, Material Status Report for the Dresden 2 and 3 and Quad-{:ities 1 and 2 stations. During a previous * inspection (No. 050-237/75-24 and 050-249/75~21), quantities reported were found to differ significantly from the* amounts that our inspectors considered to be reasonable based on thermal energy generated and fuel exposure for .

. some of the. six-months period. The reasons. for such differences were satisfactorily explained to us during this inspection and we have no further questions at this*    ... * ' .

time. To eliminate the possibility of future discrepancies, it vaa agreed at the conclusion of. the inspection that *

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future Material Status Reports for_ Commonwealth Edison .~ . facilities wou1d show actual in-core plutonium production and uranium fission and transmutation totals on: the.* reverse side of the NRC-742 form~ whenever such totals differ from .* *. quantities recorded on the front *o~. the form. . *

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y .. *e .e Commonwealth Edison - 2 - MAY 2 *7 1976 Company

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Areas examined during this inspection concern a subject matter which is exempt from disclosure according to Section 2.790

   .of the NRC's "Rules of Practice." Part 2, Title lC, Code of Federal Regulations. Consequently, our report of this inspection will not* be placed in the Public Document Roo We will be glad to d1.scuss any questions you have. concerning
   .t.his ,inspectio *- . .:*-

Sincerely yours,

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         * * J. A~. Hind, Chief
        *. * :, *. Safeguards Branch *
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Enclosure: ........ : .** : *~ IE Inspection n.eports ,.., .. , .. , .. *' , . .* .. .. . .. No. 050-237/76-10,  ;<: *' . . . . . . . . . . . . . . :,* .**c . _,._,.. No. 050-249/76-09, . . . . ". .. ,' "" '.* .. *

   . *'No*. "<>so-2'54l76-l4,    .:'.)/.::><>*L::   {<'.~~:'.>: :~  ;.:,--::

and No. 050-265/76-12  ; . . .. . . . **

    (Part 2~ 790(d) . Information).*. *: *:_:,     >;' .<: '* .'. ?~-
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UNITED sAs NUCLEi\R REGULi\TORY COMMissr9

  .';:.  . OFFICE OF INSPECTION i\ND ENFORCEMENT

REGION III

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IE

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Inspection

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Report

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N ~--- 050-237 /76-10

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IE Inspection Report N /76-09 IE Inspection Report N /76-14 IE Inspection Report N /76..:.12 Licensee: Commonwealth Edison Company P. O. Box 767 Chicago, Illinois 60690 Dresden Nuclear Power Station License No. DPR-19 Units 2 and 3 License No. DPR-25 Morris, Illinois Category: C

   * Quad-Cities Nuclear Power Station .*License No. DPR-29 Units 1 and 2     License No. DPR-30 Cordova, Illinois    Category: C
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Type of Licensee: . BWR, 800 MWe ___

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.* .* _Type of Inspection:. Materials Safeguards, Announced Dates of Inspection: April 29 and May 13, 1976 7>J. tUr4 *s-fz~ /1~ ,: .

 . Principal Inspector:  ~l)t C. C. Peck * *
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Accompanying Inspectors: * Norie *

 * Other Accompanying Personnel:   None
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Reviewed By:

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Safeguards Branch

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Attachme*nt: ** * S-F3-76~285 .*. * * ** : . ..

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 *. Findings (Part 2. 790(d). Information).*   Copy .--1L of J~ . copie *~ _ Pages *  * * *., ...
       * THIS DOCUMENT IS NOT TO BE
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      ***' :. REPRODUCED WITHOUT SPECIFIC   *.. *. ' ..

APPROVAL.. OF IE: III*

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Part 2.790(d) lnforrnat1ori e SUMMARY OF FINDINGS Inspection conducted April 29 and May 13, 1976 (Dresden Units 2, 76-10 and 3, 76-09) (Quad-Cities Units 1, 76-14 and 2, 76-12): The inspection consisted of an examination of uranium depletion and plutonium production quantities that have been reported on Forms NRC-742 by the licensee for the Dresden 2 and 3 and Quad-Cities l and 2 stations. Apparent discrepancies between reported quantities and NRC-calculated quantities were resolved. No items of noncompliance were identifie Enforcement Items No items of noncompliance were identified during the inspectio Licensee Action on Previously Identified Enforcement Items Not applicabl Other Significant Items Systems and Components. *

.N.on Facility Items (Plans and Procedures)

None *

..* Managerial Items Non Noncompliance Identified and Corrected . by Licensee Non Deviations Non Status of Previously Reported Unresolved Items Not.applicabl . .*** .
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Part 2.?~0(d) Information

PO.rt 2. 7:JO (cl) infor!l13. ti on e e

~  Management Interview At the conclusion of the meeting it was agreed that the licensee would report actual in-core uranium burnup and plutonium production

--- -- --- ---data on t-he--l'everse--of *the-NRG-742*-, Materials-Status Report--forms--* whenever these quantities differed from data reported on the face of the form. The licensee representatives stated that these differences should tend to be less significant since many of the reasons for past differences have been eliminate Present at the discussion were: L. D. Butterfield, Supervisor, Nuclear Fuel Services

 .P .* .*c ..Kuhel, Group Leader, Nuclear -Fuel -Services C. O*. Larson, Comptroller's Staff H. L. Massiu, Group Leader, Nuclear Fuel Services Joan White, Comptroller's Staff C. C. Peck, NRC

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Part 2~ 7 JO (:l} Ini'c;~rr.o.tion e REPORT DETAILS e Licensee Personnel Supplying Information L. D. Butterfield J. P. Hill P. C. Kuhel C. 0. Larson H. L. Massiu Joan White Scope of Inspection The inspection was a meeting for the purpose of resolvin*g some apparent discrepancies between uranium and uranium-235 fission and transmutation totals and plutonium production totals reported by the licensee, and corresponding totals manually calculated by NRC inspectors. These data are.reported semi-annually on Form NRC/ERDA-742 in .accordance with Section 70. 53 of 10 CFR Part 7 A comparison of NRC-calculated and licensee reported data for all reporting periods since December 1972 for Dresden 2 and 3 (seven periods) and since June 1974 for Quad-Cities 1 and 2 (four

* periods) disclosed in general that the reported quantities for the . *- r* .._. ~- .....

two periods in 1975 appeared incorrect. The manual calculations used by the inspectors cannot be expected to be as accurate generally as the licensee's computerized data, since it is not *

• '*posBible "'to :corrsrder ~-11--significant variables .in a manual metho However~ the manual method normally agrees within 8% with
• .accurate computer data. .Since differences were much larger than 8%, the inspection was made to learn the cause of the inconsistencie CFR Part 70, Section 70.53 On-line process computers are progranuned .*to print out fuel inventories for the Dresden 2 and 3 and Quad-Cities 1 and 2 reactors. For each of the 725 fuel assemblies .in each of the

. reactors, the computer will supply the current inventory of each uranium and plutonium isotope. Facility totals are also provided for the isotope **.:I The process computers were first used to generate data for use in completing the NRC-742 forms in July 1975. Until that time an off-line computer program supplied by GE was used to provide the data for these forms. ,
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The* li.censee explained that the change to*use of the on-line computer was responsible for most of the discrepancies between the depletion and production quantities reported and actual in-core depletion and production. Perturbations have also been caused by refu~lings,

 ---re-10cat1-ons--0£f-uei in -the--Core: and_ ~O~P~t-er --r~uOdi~g- ~-~th_o_d*~-.- --

The licensee stated that an effort was made to report ending inventory figures as accurately as possible on the 742 forms. The differences between ending inventory totals and beginning inventory, excluding changes caused by receipts and shipments, therefore represent uranium depletion or plutonium production. Discrepancies in the beginning and ending inventories caused by computer program changes, rounding, refueling, etc show up as apparent depletion* and proau*c-tion. *rhere "is 'no other space on the '74.2 form to indicate such discrepancies. Although these perturbations have been relatively small and insignificant as percentages of inventory totals (less than 0.1%), they can represent more than 10% of depletion or production for a six-month perio It was stated that the computer programs for Dresden 2 and 3 and Quad-Cities 1 and 2 were currently being modified to improve their inventory accuracy. Presumably this will also mean that reported uranium depletion and plutonium production figures will also be more accurat In conclusion it was agreed that the licensee would in the future report actual in-core uranium depletion and plutonium production quantities on the reverse side of the NRC-742 form whenever these data differed from quantities reported on the front .of the for Attachments 1-4 show comparat.ive licensee-NRC depletion production calculations for the four reactors. For those instances in which the 742-reported data were questioned, the licensee's calculations of actual *in-core depletion are shoW1 Attachments: Attachments 1 through 4 _.,**,

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Quad-Cities 1

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Reported Actual NRC NRC-742 Depl/Prod Calculated % Difference Period 1-6/74 u . 233,222 232,209 - U-235 122,000 121,917 - Pu 59,691 56,,859 - /74 u 424,500 405, 718 -:- U-235 190,746 201,126 + Pu 86,120 86,631 + /75 u 293,090 368,875 375,135 +l. 7 U-235 186,037 175,419 188,614 +7. 5 Pu 53,240 80,624 82,383 + /75 e u

 .U-235 Pu 424,500 190,74 . 86, 120 430,500 193,006 83, 130 .

427,645 207,920 85,833

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         + + Overall u    1,457,097  1,440,707  - U-235    681,171  719,577  + Pu    309,56 , 706  + I
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Attachment 1

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Part 2. 790 (d) Information *

Part 2, 790 fdJ Inlorrn8.Hon e e e *- Qund-Cities 2

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-*------- --------- - - - - - ----Repor-ted -- - *--Actual----- NRC-742 Depl/Prod Calculated  % Difference

 .Period 1-.6/74 u 447,630   467' 158  + U-235 234,600   249,853  + Pu 115,726   119,595  +.3. 3 7-12/74 u 400,710   404,213  + U-235 194 ,612   . 209,373  + Pu 91,839   95,743  + /75 u 80, 113 159,312  161, 79 +I. 6 U-235 73,615 83,350  86,999  + Pu 14,248 41,590  41,946  + /75 u 455,529 347,750  345,886  - e  U-235 Pu 192,942
  .93,973 175,52 ,305 178,959 81,.693 .
       + .1 Overall u  1,355,402 . 1 379 055 .-:**-.  +l. 7
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 .U-235  688,08 , 184*  + Pu   333,460  338, 977  + ..
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  * *Part 2, 790 (d) Inform'.l.tion

Part 2.790(d) Information

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Dresden 2 _______________________ Rep_or.ted __ '--- ___ ActuaL ___________ NRC -- ----------- ----- ------- - ---- ------- NRC-742 Depl/Prod Calculated  % Difference Period 7/72-6/73 u 950,050 964,327 +l. 5 U-235 572,244 605,926 + Pu 347,956 332,183 - /73 u 436,868 468,967 +7. 3 U-235 234,340 255,193 + Pu . 114,008 114, 294 +o.o * 1-6/74 u 446,090 418,051 - U-23 ,836 214,395 - Pu 80,752 85, 372 + /74 u 214,595 ... 218, 460 + e U-235

 .. Pu 98,347
 . ,,45,7_19 112, 913
     . 46;*828
       '+1 +2.*4
.1-6/75 u . 78,226 80,375  83,368   + U-235 52,086 41,815'  46,696   +IL Pu 17 '908 - 21,030 . 22,418   + /75 u 475,717   479,25 + U-235 241,571   : 253,860   + Pu 115~45 ,596   -4. 2 ..

Overall u 2,603,695 '2,632,425 *. + ... U-235 . 1,409, 153 1,488, 983 . .. + .

. Pu  724,916  711,691 -  *.*'.
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'Part 2. 790 (d). Inforru:ition

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