ML17252A808
| ML17252A808 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 03/17/1975 |
| From: | Stephenson B Commonwealth Edison Co |
| To: | James Keppler NRC/RGN-III |
| References | |
| Download: ML17252A808 (1) | |
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VEE2l2C 1602) C2*036073E076)PD. 03/17/75. 1602 ICS IPMBNGZ CSP 8159424449 TDBN MORRIS* IL l '1'8 'so3-<[i) 0402P. 'EST.
PMS :*JAME~~-~-JtE?f.1.~~ REG'IONAL DlRECTOR D lRECTORATE OF. REGULATORY.OPE RAT IONS REG ION :S US NUCLEAR COMMISSION ~ux ~99 ROO~~VELT RD GLEN ELLYN IL '601~7 SUBJE.CTt DPR 0 25 9
- DRESDEN.NUCLEAR* POl.1ER.*STATION, UNIT :So THIS WILL CONFIRM-A CONVERSATION WITH MR. P JOHNSON OF YOUR At* 1455 HOURS THIS DATE CONCERNING PE'RIODIC 25 CONTROL ROD SCRAM TESTIN.G. Iro \\tJKICH IT WAS DETERMINED THAT SECTION 3.:s.c.1 OF' THE TECH SPECS *couLD NOT BE MET FOR AVERA*G*E OF THE SCRAM INSE*RTION TIMES FOR
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THE :s F'ASTEST Roo*s OF ALL GROUPS. OF *4 *CONt-ROL RODS lN 'A *2x2 ARRAY.
THE RODS CAus'tNG THE PROBL°EM ARE H~8 AND 1c... 10 <FOR 5... 010 AND 20.. 010
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TRAVEL) 9 J.. 8CF'OR s~o10.,.20-010 AND 50-0/0 TRAVEL) AND L-9.~ L-11 AND J* l l (FQ;R 5-.Q/_O.TRAVJ;:l,..). -.A s~.CON,D t,E~T OF THE' AifvVE" ~0'[)'$' [)'ID NOT
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c DUPLICATE THE PREV*lOUS RESULTS 51 IE 11 ALL *DRIVES WERE SATISFACT.ORILY SCRAM TESTED WITHIN. ALLOWABtE LIMITS. ADDITIONAL TESTING IS CONTINUING TO DETERMINE AND*COR~ECT THE PROBLEM OF SLOW INITIAL.
- SCRAM.T !ME So B B STEPHENSON 9 SUPERINTEN_DENT., DRESDEN NUCLEAR PO\\!JER STAT ION 0 COMONWEALTH EDISON COMPANY RR l MORRIS IL 60450
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