ML19220D036
| ML19220D036 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/04/1979 |
| From: | Lafleur J NRC OFFICE OF INTERNATIONAL PROGRAMS (OIP) |
| To: | INTERNATIONAL ATOMIC ENERGY AGENCY |
| References | |
| NUDOCS 7905160214 | |
| Download: ML19220D036 (3) | |
Text
{{#Wiki_filter:S. 3 C 'is G T E !. : Q F A in gg-320 + .-s v - ( = A L___ _1 J ----. =v = = ~' UNCLASSIFIED._ _ _ d, ....,._,-,-_c.n.- w = wyyry gwy-a.. , mi -- - r ..p t eerz _. -- - .--J*."4"**%F~4 ^~ USNRC:JDLAFLE'UR ~ 4/4/79:.492-7131..-.. OES/ NET /Ith DHC00PER EUR/RPE: USARMON 7 INFO} ~ EA/RA-PCLEVELAND { INFO} ~ ^ NEA/RA: HENGELBRECHT { INFO} ARA: GJONES/JHENNEKE { INFO} IO/ SCI: -AJILLSON-{ INFO} L/N: RJBETTAUER { INFO} s. IMMEDIATE ATHENS, BERN IMMEDIATE, BOMBAY IMMEDIATE-BONN IMMEDI-ATE, BRASILIA IMMEDIATE, BRUSSELS IMMEDIATE, BUENOS AIRES IMMEDIATE, USIAEA, USOECD, USEIC, PASS TO PARA 1 PARTIES ASAP E.O. 11652: N/A n TAGS:
- TECH,
SUBJECT:
THREE MILE ISLAND REACTOR STATUS REF: A-0221
- 1. ADDRESSEES REQUESTED TO PASS FOLLOUING INFORMATION TO OFFICIAL NRC CONTACTS IN HOST GOVERNMENTS AND TO VISITING SENIOR U.S. OFFICIALS, ASAP, DURING DAYLIGHT HOURS, AND TO USE AS APPROPRIATE IN ANSUERING INQUIRIES.
PLEASE NOTE THIS INFORMATION IS PRELIMINARY AND NOT FU8.LY EuALUATED. 2 PLANT STATUS AS OF 7 AM, APRIL 4 A. THE COOLING PATH TO REMOVE CORE DECAY HEAT CONTINUES TO BE THROUGH "A" STEAM GENERATOR TO THE MAIN CONDENSER. B. REACTOR PRESSURE REMAINS NEAR 1000 PSI, UITH BULK CORE COOLANT INLET AND OUTLET TEMPERATURES A.T 280 DEGREES F. CORE THERMOCOUPLE READINGS ARE RELATIVELY UNCHANGED AND INDICATE A MAXIMUM TEMPERATURE OF 466 DEGREES F UHICH IS UELL BELOU SATURATION TEMPERATURE FOR THIS PRESSURE. {0NLY THREE THERMOCOUPLES READ ABOVE 400 DEGREES F.} GAS IS STILL INDICATED TO BE PRESENT BASED ON BUBBLE SIZE CALCULATIONS, BUT ITS VOLUME IS ERRATIC INDICATING THE EFFECTS OF SOLUBILITY AND BUBBLE DISPERSION. VENT VALVE ON PRESSURIZER HAS BEEN CLOSED AND DEGASIFICATION CONTINU LJa aFG UNCLASSIFIED j l 7905160 R/ P ---_-----------------V- - - - - - -
i,' UNCLASSIFIED l2 THE0 UGH THE LETDOWN SYSTEM. C. CCNTAINMENT ATMOSPHERE MEASUREMENTS INDICATE ABOUT 2.1% HYDROGEN. ONE HYDROGEN RECOMBINER IS OPERATING AND AN 11-DAY TIME PERIOD IS PROJECTED FOR REDUCTION OF THE FYDROGEN CONCENTRATION TO ABOUT 1%. AT 1930 ON. APRIL 3, ONE OF THREE PRESSURIZER LEVEL TRANSMITTERS FAILED. ALTERNATE METHODS OF LEVEL MEASUREMENTS ARE BEING DEVELOPED AND PROCEDURES REVIEUED FOR IMPLEMENTATION UHILE CALIBRATION CAN OCCUR WITH THE EXISTING DETECTORS. D. PLANS TO USE A ROBOT DEVICE TO OBTAIN A PRIMARY COOLANT SAMPLE ARE BEING EVALUATED. PREOP TESTING WITH THE ROBOT IS IN PROGRESS. E. THE TESTS OF CONTAINMENT BUILDING GAS SAMPLE 3EPORTED FOR APRIL 3 HAVE BEEN DETERMINED TO BE FAULTY AND SHOULD BE DISREGARDED. NEU SAMPLES ARE BEING ANALYZED. 3. ENVIRONMENTAL STATUS A. FDA HAS REANALYZED THE RIVER UATER SAMPLE COLLECTED THE AFTERNOON OF APRIL 2, 1979 AT A I.0 CATION 2 MILES DOWNSTREAM. THE VALUE OF 39 PIC0 CURIES PER LITER IODINE-131 PREVIOUSLY REPORTED FOR THIS SAMPLE HAS BEEN FOUND TO BE INCORRECT; NO IODINE AB0VE MINIMUM DETECTABLE LEVELS HAS BEEK FOUND. B. OTHER ENVIRONMENTAL MEASUREMENTS INDIC ATE A CONTINU-ATION OF THE TREND OF GRADUAL REDUCTION OF THE REMAINING LOW RADIATION LEVELS CAUSED BY THE INCIDENT. YY \\h0 UNCLASSIFIED
ACTION PRECEDENCE CONTINUED: IMMEDIATE COPENHAGEN IMMEDIATE HELSINKI IMMEDIATE LONDON IMMEDIATE MADRID IMMEDIATE MANILA IMMEDIATE MEXICO CITY IMMEDIATE NEW DELHI IMMEDIATE PARIS IMMEDIATE RIO DE JANEIRO IMMEDIATE ROME IMMEDIATE SEOUL IMMEDIATE STOCKHOLM IMMEDIATE TEHRAN IMMEDIATE TEL AVIV IMMEDIATE THE HAGUE IMMEDIATE TOKYO IMMEDIATE VIENNA ))} 3'}}