ML19220C866
| ML19220C866 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/03/1979 |
| From: | Lafleur J NRC OFFICE OF INTERNATIONAL PROGRAMS (OIP) |
| To: | Abraham P, Cunningham J, Jennekins J CANADA ATOMIC ENERGY CONTROL BOARD, INDIA, IRELAND |
| References | |
| NUDOCS 7905160010 | |
| Download: ML19220C866 (2) | |
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fc.3pc U.S. NUCLEAR REGULATORY COMMISS10i CFFICE OF IIITER'ATIONAL PROGPA.:S PRIORITY
',!ASHIt'GTON, D.C. 20555 UMCLAbtIFIED TLX: 710-524-0A15 4-3-79 i
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a. t n:, -. 3., e.o.., DEPUTY DIRECTOR,. OIP 27788 XX a.
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fiUCLEAR ENERGY E0ARD J. JENNEKINS, PRESIDENT ATTN: JCHN CUNNINGHAM AECB 20-22 LOWER HATCH STREET OTTAWA, CANADA CUBLI!!, IRELAND TLX: 053-3771 TLX: 3CC-10 JU SUNG l'R. P. ASPAHAM CCNA CAE SAFETY REVIE'.i CCf'MIi t a 0151 RIVER ROAD, N.W.
SPASHA ATCMIC RESEARCH CENTRE WASHINGTON, D.C. 2001U TROM3f.Y, BOMBAY, I"DIA
?.0Y 3 PMINS U.S. E".EASSY Civde McClelland
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- -"a-v EELGRADE, YUGOSLAVIA Mff,"C$ada TLX llE29 TLX: 0533552 SUEJECT: THREE MIEE ISLAND REACTOR STATUS THE FCLLOUING PP.ELIMINARY INFCPPATION IS PROVIDED ON THE THREE ?U ISLS.ND f UCLEAR POWER PLANT INCIDENT OF !' ARCH 28, 1979, FOR USE AT YCUP. DISCRETION.
PLEASE NOTE THIS INFCPPATION IS PRELIMINARY AND NOT FULLY EVALUATED.
2 PLANT STATUS AS OF 7 A.M. APRIL 3 A.
REACTOR PRESSURE REMAINS NEAR 1000 PSI, WITH BULK CORE COOLANT INLET AND OUTLET TEMPERATURES AT 260 F.
CORE THERMOCOUPLE READINGS ARE RELATIVELY UNCHANGED AND INDICATE A MAXIMUM TEMPERATURE OF 477 F UHICH IS UELL SELOW e
SATURATION TEMPERATURE FOR THIS PRESSURE.
{0NLY 3 THERMO-ci COUPLES READ ABOVE 400 F}.
THE GAS SUSBLE STILL APPEARS g
TO SE PRESENT AT A MUCH REDUCED VOLUME, UITH SUBBLE SII::.
e CALCULATIONS STILL BEING EVALUATED.
DEGASIFICATION CON-c TINUES.
CONTAINMENT ATn0 SPHERE MEASUREMENTS INDICATE 190UT 1 9 PERCENT HYDROGEN.
ONE HYDROGEN RECOMBINER I.,s
} 7_.)JC A OPERATING, AND A 12 DAY TIME PERIOD IS PROJECTED FOR] REDUCTION OF THE HYDROGEN CONCENTRATION TO ABOUT 17.. \\ 5 PLANS TO USE A ROBOT DEVICE TO OSTAIN A PRIMARY COOLANT / 4/d/i9 { 3a*** ...L.-.... - t -. NRO Fsact ne (p.76$ Naos OM
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~ ~" _- q - SAMPLEARbBEINGEVALUATED. PREOPERATIONAL TESTING UITH ROBOT IS IN PROGRESS.
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ENVIRONMENTAL STATUS A. NO SURVEILLANCE FLI1HS HAVE BEEN CONDUCTED SINCE 6:00 AM ON APRIL 2 SECAUSE OF UEA~THER. ALL OFFSITE GROUND SURVEYS INDICATE ABOUT ICO2 MILLREM/ HOUR, EXCEPT FOR A BRIEF PERIOD DURING PER!0DIC VENTING OF THE PRIMARY SYSTEM MAKEUP TANK TO THE VENT HEADER. DURING THIS VENTING, AN OFFSITE TEAM DETECTED A BRIEF, DOWNUIND.1 5 MILLIROENTGEN / HOUR GROUND LEVEL DOSE RATE UITH A RAPID RETURN TO 0 02 MR/ HOUR. THIS LEVEL IS LESS THAN OTHERS REPORTED PREVIOUSLY FOR SIMILAR OPERATION ACTIVITIES. B. DOSE RATES IN POPULATED AREAS AS MEASURED BY NRC THERM 0 LUMINESCENT DOSINETERS {TLD} SHOWED A SIGNIFICANT DECREASE FROM THE PREVIOUS DAY. C. ON APRIL 2, THE FOOD AND DRUG ADMINISTRATION REPORTED CONCENTRATIONS OF RADI0 IODINE IN EIGHT MILK SAMPLES. THE RESULTS RANGED FROM 10 FIC0 CURIES PER LITER {THE MINIMUM DETECTABLE ACTIVITY} TO 20 + 10 PIC0 CURIES PER LITER. D. SINCE MARCH 30, THERE HAVE BEEN CONTROLLED RELEASES OF SEVERAL HUNDRED THOUSAND GALLONS OF UATER FROM THE INDUSTRIAL UASTE TANK TO THE SUSQUEHANNA RIVER. THE EFFLUENTS CONTAIN RADI0 IODINE. ON APRIL 2, THE FDA REPORTED THAT A SAMPLE OF RIVER WATER COLLECTD TUO MILES FROM THE PL ANT UAS AN AL'/ID AND FOUND TO CONTAIN 3 9 X 10 -6 MICR0 CURIES PER NILLILITER OF IODINE-131, OR ABOUT I3% OF MAXIMUM PERMISSIBLE CONCENTRATION {MPC}. 3 OTHER INFORMATION L0U EXPOSURES IN THE CONTROL ROOM AND IN OTHER SITES AROUND THE PLANT CONTINUED TO DECREASE SIGNIFICANTLY AS DD RADIO ACTIVITY CONCENTRATIONS IN THE CONTAINMENT GUILDING. !!5? b /:3.,e (_ gg j gg hYD \\\\1 \\Sh UNCLASSIFIED. .~- ______._ __ _ _ ___ _ _ _ _. _ __}}