ML19264B553
| ML19264B553 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 02/23/1962 |
| From: | Bryan R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | |
| Shared Package | |
| ML19264B551 | List: |
| References | |
| NUDOCS 8011170798 | |
| Download: ML19264B553 (2) | |
Text
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UtiITED STATES ATOUC E!ER3Y C0KKISSION
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HA2ARIE D:ALYSIS IiY TIE SESr. ARCH M D POER RF3.CTOR SAFETI BRD;CH i
i DWISIO'! CF LICI'ETIT3 E!D RIDUI/.TICN I!I T!E M*.*Ti2 O?
TM;EEE ATOMIC I.IZOTRIC COMPUTT I
FROPOSED CHAN3E NO.19 l
DOCEIT !J0. 50-29 Intro 6 action Pursuant to the provisione of paragraph 3.A. of License No. DFR-3, as amended, Innkee Atonic Electric Co ::peny in Proposed ChcnEe No.
19 dated February 13, 1962 recaested a temporary waiver of a pro-vision of Section 509 of their license applicatien which was incorporated by reference into the technical epecificatiens of its operating license. This provisica reqaires a measurement of certain reactivity coefficiente at 2,000 hour0 days <br />0 hours <br />0 weeks <br />0 months <br /> intervrle daring core life. Sach measurements were u de at the str&rt of Ccre I li.fe, and at approximately 2,000, h,000 cnd 6,000 eqaivnlent full power hours. The 8,000 hour0 days <br />0 hours <br />0 weeks <br />0 months <br /> test with Core 1 is dae to be con-dacted on approxir.ntely Februtry 23, 1962, and Tcnkee hae reyaceted
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that this tett be deferred until the end cf core life, r.ich is presently entinated to be at apprcris tely 9,000 egaivalent full power hours.
Dircar,rdon It hcc been Yankee's rectnt experience thct thcnever thcir reacter has b(cn s!nt down or scrnmed, a reactivity less of cpprcrirately
.3% to.5% has occured on the return to power. Although thic loss j
has been cabceq;ently regained during power operction, Isnkee is concerned that if they are reqaired to that the renctor dcwn for the 0,000 hour0 days <br />0 hours <br />0 weeks <br />0 months <br /> test, a loss of reactivity n:irht be experienced which would prcrent returning to nny cubstantial power Icvel.
The 2,000 hrar teste of reteter coefficient were originally speci-j ficd beccuse of concern regcrding the offect on recctivity coefficients of plutonium baildup in the core. Tren the result:
cf the inferrztion obtained darinT; the torts conducted to date, Tcnkee has concluded that plutoniun buildap in the core las na rirnificLnt effect on these coefficiente. It is cur opinion t!st the data which hn: been presented by !cnkee to the Corr.istien 8011170