ML19320C670

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PNO-TMI-80-038E:on 800707,purging of Reactor Bldg Atmosphere Continued.Momentary Shutdowns Occurred Due to Stack Monitor Filter Changeouts
ML19320C670
Person / Time
Site: Crane Constellation icon.png
Issue date: 07/07/1980
From: Jay Collins, Conte R, Shanbaky M
Office of Nuclear Reactor Regulation
To:
References
PNO-TMI-80-038E, PNO-TMI-80-38E, NUDOCS 8007170540
Download: ML19320C670 (1)


Text

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PRFLIMINAP.Y NOTIFICATION July [. N ou C'.TG '107~ c 1 Qi10;; CF F'.Til 0F J4ULUAL r.Cf,CliRitFNCF--FNO iMI-80-38E

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Ihi r. pret i;!:irury noti fica tion cons tituter. FARL Y notice of events of POSSIRI F safety or Ebii._ interni 'ifjimi icSnice.

The,,{n' tor:aation_ presented is as initially rcccived without verificnion oc NAioation and is basically all that is known by NRC staf f on this dat,c.

'~atility. 'ietropolitan Ldison Company lhree Mile Tsiand, Unit 2 Middletown, Pennsylvania Oncket Number 60 'J20 5.uk,[Mi: QFACTOR UUl! DiMG Pli?GE STATUS P.r'.!!ng of the reactor building almosphere utilizing the modified hydrogen control (MHC)

Momentary system continJen at various syr. tem flow rates based on meteorological condition.

squtdowns also occurred uac to 5 tack monitor filter changeouts.

'in::vc purce syster, flow ra'.e was approx smately 570 ctm, while stack flow rate averaged Total calculated radioactivity released 100.000 cfm in the past 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

acDrc4imately 00 a.m. was 27,814 Ci based on stack flow rate and incasured stack concentration.

as el 7:

'iemainina conc.entration in the reactor building based on the last building sample was acuiyzec at 0.T/ uCi/cc (21.070 C1, total).

The,alti Chanr+1 arislyzer enntinues to be in operation and indicates no particulate activity being emitted.

!.iti;izat. ion of the modified reactor building purge system (MPS) for a faster purge rate is axpected by nid weck.

Additional reports on reactor building purging will he updated on a daily basis during the initin! stages of purjing. The NRC Region I mobile laboratory will continue to be used to verify the liccnsee's analytical resul ts.

Pedia interest has occurred because of public sensitivity to this evolution and TMI related NRC has responded to The Cc:mionwealth of Pennsylvania has monitored these events.

The ;NC TMT Program 0ffice staf f has monitored events as they occur on a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> evente..

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This infornation is current as of F,:00 a.m.

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