ML19199A225
| ML19199A225 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/01/1979 |
| From: | Lafleur J NRC OFFICE OF INTERNATIONAL PROGRAMS (OIP) |
| To: | |
| References | |
| A-0221, A-221, PR-790401, NUDOCS 7904050197 | |
| Download: ML19199A225 (5) | |
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SUBJECT:
THREE MILE ISLAND REACTOR STATUS .m=~>. REF: A-02213 STATE E 1 ADDRESSEES REGUESTED TO PASS FOLLOUING _ " ~" INFORMATION TO 0FFICIAL NRC CONTACTS IN HOST GOVERNMENTi AND TO VISITING SENIOR U.S. OFFICIALS, ASAP, DURING DAYLIGHT HOURS, AND TO USE AS APPROPRIATE IN ANSWERING INGUIRIES. PARAS 1-6 ARE PRELIMINARY, NOT YET VERIFIED. -, :n. 2 PLANT STATUS AS OF 5:39 P.M., MARCH 31 . A. NO CHANGE IN THE METHOD OF COOLING FROM LAST REPORT. REACTOR COOLANT TEMPERATURES MEASURED BY INCORE THE ~,M 0 C O UPL ES. AT PRESENT NONE OF THE TEMPERATURE READINGS IS A30VE SATURATION TEMPERATURE FOR THIS PRESSURE {554 DEGREES F.}. SYSTEM PARAMETERS REMAIN STABLE. THERE HAS BEEN A SLIGHT DROP IN PRESSURIZER LEVEL FROM 215 TO 191 -. j C r.. ~.. 11 t a 4 E. EFFORTS CONTINUE TO COMPLETE INSTALLATION OF COMPONENTS AND PIPING ON THE HYDROGEN RECOMEINER. APPROXIMATELY EED TONS OF LEAD SHIELDING HAS ARRIVED, OR IS ON THE UAY, TO l97 %405olfl@ .... itrettggFIED y
..-... ~.- ~. . ~. ~ ~~ UNCLASSIFIED-......_..l._,-.,.. 2-THE SITE'. LEAD SHIELDING IS SEIbG INSTALLED AROUND THE ^ RECOMBINER. A DECISION TO USE THE'RECOMBINER HAS NOT YET BEEN MADE. TUO SAMPLES OF, CONTAINMENT ATN0 SPHERE HAVE BEEN'ANALYIED UHICH SHOU HYDROGEN CONCENTRATIONS OF 1 7 AND-1 0%. ~ C. EFFORTS CONTINUE TO ESTIMATE THE VOLUME OF THE NON-CONDENSIBLE GAS BUBBLE AE0VE THE CORE. LICENSEE CALCULA-TIONS OF THE SIZE OF'THE BUBBLE AT 2: 40 P.M. UAS 660 CUBIC FEET AT 675 PSIG. AT ABOUT 4:30 P.M., THIS UAS RE-CALCULATED SY THE LICENSEE TO BE 621 CUBIC FEET AT 675 .PSIG. THIS IS SEING FURTHER EVALUATED. ~ '3 ENVIRONMENTAL STATUS AS OF 5:30 P.M., MARCH 31 U-THREE FLIGHTS 1UERE CONDUCTED AT ABOUT 6:00 A.M., 9:00 A.M., ~~ L J AND 12:00 NOON ON MARCH 31. ALL FLIGHTS REFLECTED A '~ =2 ]i---' ~ ' ' UERE FROM 1.5 TO 2 5 MILLIROENTGENS PER HOUR {MR/HR} AT 'RATHER STABLE SITUATION. MAXIMUM READINGS IN THE PLUME .A DISTANCE OF ONE MILE.FROM THE PLANT, FROM O.5 TO 10 - "MR/HR OUT TO 7 MILES, AND 0 1 TO D.2 MR/HR BEYOND 10 MILES. i~' THE PLUME WIDTH IS ABOUT 1-1/2 TO 2 MILES. NO RADIOIODINES ~~ HAVE BEEN DETECTED IN THE PLUME. OFFSITE GROUND LEVEL. GAMMA SURVEYS PERFORNED IN THE PREDOMINANT UIND DIRECTION INDICATED MAXIMUM LEVELS OF ABOUT 2 MR/HR AT ABOUT 1/2 MILE FROM THE SITE IN THE DIRECTION OF THE PLUME. THE UIND UAS FROM THE SSU AT THE TIME OF THE SURVEY FLIGHTS. AT ABOUT l'P.M. THE UINDS SHIFTED AND ARE NOU BLOUING IN A SOUTHEASTERLY DIRECTION. 4. A PLANT STATUS ES OF 7:00 A.M. APRIL 1 ]; 7: ..A. THERE HAS BEEN NO SUBSTANTIAL CHANGE IN THE PRIMARY ~ -SYSTEM ~ TEMPERATURE AND PRESSURE. INCORE THERMOCOUPLES CONTINUE TO SHOU A DOUNUARD TREND. B. ACTIONS ARE UNDEEUAY TO VENT RADI0 ACTIVE GASES FROM THE UASTE GAS DECAY TANK TO THE CONTAINMENT BUILDING. THIS UILL BE PERFORMED THROUGH A TEMPORARY PIPELINE. C. THE LICENSEE PLANS TO HOOK UP AND SHIELD TUO RECOMBINERS PRIOR TO INITIATING RECOMBINING OPERATIONS TO REDUCE ~THE CONCENTRATIONS OF HYDROGEN IN THE CONTAINNENT. THE LICENSEE ESTINATES THAT IT WILL REGUIRE ABOUT 24 HOURS BEFORE THE RECOMBINERS UILL BE OPERATIONAL. D. CALCULATED VALUES SY THE LICENSEE OF THE VOLUME OF NONCONDENSIBLE GASES ABOVE THE CORE CONTINUE TO VARY. UNCLASSIFIED ...Z._'....., .-..ib137
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.. ~..,. ~ lw 3.- n 3 ,..., _.. 5 ENVIRON;iE!;TAL STATUS AS OF 7:GD A.M. APRIL 1 SURVEY FLIGHTS AT APPR0XIMATELY 3-HOUR INTERVALS UERE. CONTINUED ON MARCH 31 TND THE EARLY HOURS OF APRIL
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SURVEY RESULTS REFLECTED STABLE CONDITIONS. MAXIMUM READINGS UERE E MR/HR IN THE PLUME AT A DISTANCE OF 1 MILE FROM THE PLANT. THE PLUME UIDTH HAS BEEN ABOUT 1 5 MILES
- OUT TO A DISTANCE.OF 10 MILES.
AT A DISTANCE OF 10 MILES,' PLUME READINGS UERE 0 15 MR/HR. MILK UAS COLLECTED AT NINE STATIONS ON MARCH 31; NO RADIOACTIVE IODINE UAS DETECTED. OFFSITE GROUND LEVEL GAMMA SURVEYS PERFORMED IN THE PREDOMINANT UIND DIRECTION 'SHOUED A MAXIMUM OF =- D.6 MR/HR AT 500 YARDS FROM THE PLANT TO A LOU OF 0 06-MR/HR AT DISTANCES OF 2 TO 3 MILESer AN EXCEPTION UAS. NOTED.DURING THE COLLECTION OF A SAMPLE FROM.THE UASTE2.-' ~ GAS DEC AY TANK UHEN GAMMAjEVELS OE3 MR/HR. UERE OBSERVED.T: 5 '_'=d. M AT. A.DIST ANCE OF 500 ~ Y ARD S EAST OFk.THE-- PL ANT:-- - E4' : m-9.7 -2 r- .4 _- 6.. 3.,0THER INFORMATION. -
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,g, +----;. - .E. -- ..s... u ..=..=:..- m= = .:w a.- - ' ANALYSIS OF'A' SAMPLE OF PRIMARY COOLANT INDICATED THAT 1 THE PRINCIPAL ISOTOPES' RELEASED FROM THE FUEL UERE'-Q DINE, ' CESIUM AND NOBLE GASES. A PRELIMINARY EVALUATION OF THE ANALYTICAL RESULTS RELATED TO THESE MORE VOLATILE IS0' TOPES INDIC ATES' HIGH FUEL TEMPERATURES EXISTED, PERHAPS FOR-EXTTTfDED PERIODS. HOUEVER, RATIOS AMONG ISOTOPES INDICATE ~ THAT THE LESS VOLATILE ISOTOPES,'EUCH AS STRONTIUM, UERE RELEASED TO THE COOLANT IN QUANTITIES CHARACTERISTIC OF RELEASES FROM THE GAPS'0F THE FUEL.:AND, THEREFORE, BASED ON THIS PRELIMINARY EVALUATION, MELTING OF THE FUEL IS NOT CONSIDERED LIKELY TO HAVE OCCURRED. -CEND UNVERIFIED ~ ~~ _[ INFORMATION.} .i ~ T;.' e 7.
- THE WHITE HOUSE HAS' ANNOUNCED THAT PRESIDENT CARTER
_ _M ~ l- ~ PLANS TO VISIT MI'liDLETCJN, PENNSYLVANIA, NEAR THREE MILE T ISLANT, DURING THE AFTERNOON OF APRIL 1 HE UILL SE ACCOMPANIED BY GOVERNOR ~THORNBURGH 4F PENNSYLVANIA. vg 6 THE FOLLOUING 1S QUOTED FROM A' PRESS CONFERENCE HELD BY NRC CHAIRMAN HENDRIE, MARCH 31
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a,... .' GUESTION: COULD YOU EXPLAIN ~TO US=UHETHER YOUR FEELING._. ~ IS THAT AN EVACUATION UOULD HAVE T00AKE PLACE UHEN YOU; ~~ REACH ~THE CRISIS, UHEN ~YOU HAVE TO -MAKE THE MOVE THAT- ~ ~ 00UL{ 50L'vE THIS BUEELf7RT)Bi_EMI r 2.
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- w.- CHAIRMAN HENDRIE: I UOULD REGARD IT AS CERTAINLY A PCSSIBILITY AND ONE THAT UE UILL HAVE VERY MUCH IN MIND .y UNCLASSIFID . 11 138
~ UNCLASSIFIED l 4- .. ~ ~ II. CC:)SIDEP.ING THAT STEP. UE WILL SE 2ISCUSIING IT, OF COURSE, UITH THE STATE PEOPLE, SITH THE GOVERt:0R AND 50 ON. N ..r. IT MAY TURN OUT TO BE I PRUDENT PRECAUTIONARY MEASURE IN THEEVENT UE FEEL THAT THE PROCESS OF GETTING RID OF THAT G/.S BUEBLE HAS SOME UNCERTAIN ELEMENTS IN IT. I GUESS I UOULD COMMENT UITH REGARD TO TME EVACUATION rTiLta T0a ai .T.a ' G t. f.r: m a i -am i u..a T. Lah.v._i_e
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i H. .e,. c i r A n ss .is.. THE FOMENT, AND APPEARS UELL SITUATED TO REMAIN S0 FOR THE.NEAR TERM, THAT IT IS CUR JUDGMENT--AND UE HAVE RECOMMENDED TO THE STATE PEOPLE AND TO THE FEDERAL ?EOPLE CONNZ'TED UITH EMERGENCY PLANNING--THAT ALL OF THE ENERGENCY PLAN STAFF SHOULD REMAIN ON AN ALERT STATUS. - UE HAVE JUST IN MIND THAT IF THE CONDITIONS AT THE PLANT SHOULD CHANGE, UE ARE IN EFFECT KEEPING THE NEED FOR .= - PROTECTIVE ACTIONS ON THE PUBLIC SEHALF AS A SORT OF JUS: CONSTANT AND CONTINUING CONSIDERAT_ ION IN CUR --
- QUESTION
HOU UIDE AN EVACUATION U0ULD THAT BE? 3-- ~ GUESTION: YES, IF YOU DECIDE TO EVACUATE, HOU MANY ARE YOU THINKING ABOUT? HOU SIG AN AREA ARE YOU THINKING ASOUT UHEN YOU GET TO THAT STEP? CHAIRMAN HENDRIE: SHOULD EVACUATION EE A RECOMMENDED COURSE, I UOULD EXPECT THAT IT UOULD SE OUT TO DISTANCES PROEA2LY EETUEEN 10 AND 20 NILE:, AND IN A QU A33;,NT UgIcy UOULD BE IN A DOUNUIND DIRECTION. THAT IS A CONCERN THAT YOU'RE TRYING TO MEET, IN AN EVACUATION THERE IS THE POSZIBILITY CF A SIGNIFICANT RELEASE FROM THE PLANT, A GASEC'S RELEASE. THAT RELEASE THEN, OF COURSE, MOVES DOUNUlND, UOULD MOVE DOUNUIND, AND PEOPLE UHO ARE UPUIND . ARE~IN GOOD SHAPE, AND PEOPLE UHO ARE DOUNUIND UOULD BE EETTER OFF TO SE OUT OF ITS PATH- {END OF PRESS CONFERENCE GUOTE.} YY e ge.-ee e e w. A./ 11 1 9_n
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