ML20084E492
| ML20084E492 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 08/19/1970 |
| From: | Sweet J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Kirkman R US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084E449 | List: |
| References | |
| NUDOCS 8304150091 | |
| Download: ML20084E492 (2) | |
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b,4& ELE Telegram fl ' tue. stem umon 3
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446P EDT AUG 19 70 PB394 SYF264
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SY RHA249 BR PDF 4 EXTRA ROCHESTER NY-19 258P EDT i
R W KIRKMAN, DIRECTOR REGION 1 DIVN OF COMPLI ANCE USAEC
!c 970-BROAD ST NEWARK NJER fi THIS IS TO CONFIRM MY CONVERSATION AT 1420 HQURS THIS DATE, WITH MR MOSLEY IN REGARDS TO AN ABNORMAL OCCURANCE THAT CAUSED j
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A CONDITION THAT WAS DETECTED ON AUGUST 1F 1970 AT ABOUT 1500
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HOURS THE PERIODIC TESTING OF REACTOR PROTECTION SYSTEM CHANNEL j
i' em 3 BEGAN, WITH THE OVER POWER DELTA-T TRIP PROTEQTION FOR THIS
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h CHANNEL PLACED IN THE TRIP MODE STOP AT 1533 HOURS THE OVERPO gD_ f 88 ROD STOP AND -REACTOR TRIP BISTABLE, TC-407/B WAS FOUND TO DE 3
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O FAULTY STOP IMMEDIATE REPLACEMENT OF THIS BISTABLE WAS BEGUN f
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86 STOP fg ON. AUGUST 19 1970 IT WAS DECIDED, SINCE THE FAULTY BISTABLE WOULD AFFECT THE REACTOR TRIP SET POINT, TO INVESTIGATE THE p
- i ma.m EXTENT OF THIS AFFECT STOP THE RESULTS OF THIS INVESTIGATION l
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.n SHOWED THAT THE CONDITION OF THE FkULTY BISTABLE HAD BEEN SUCH z
AS TO CAUSE THE SET POINT, FOR STABLED CONDITIONS, TO BEGIN EXCESS OF THE PRESCRIBED FO'RMULA IN TECHNICAC SPECIFICATIONS, SECTION 2 31.2.E OF LIMITING SAFETY SYSTEM SETTING STOP JAMES F SWEET OPERATIONS ENGINEER GINNE STATj0N ROCH GAS AND ELEC
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DELTA-T 1533 0-1407/B 191970 2 3 1.2.E GINNE (319).
we CF-1201 (R549) i 1
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MEMO ROUTE SUP 5++ me about this.
For conct ae.
For action.
9 Form AEC-93 (Rev. Af ay 14.1947) AEChi v240 Note and return.
For signature.
For Inform *tlem, 4
TQ (Name and unit)
MT1ALS REMARKS g
J,. P. O'Reilly Forwarded herewith is a telegram from dilef, RI&EB, CO:HQ Rochester Gas And Electric Corporation received mT at CO:I 8/20/70.
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MTIALS REEARKS fl k
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HTIALS REatARKS I.
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REMARKS
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E. M. Howard 03000
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