ML19210A244: Difference between revisions

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=Text=
=Text=
{{#Wiki_filter:-_-....._--..-.-.!_.-(f 2,. ,a w~-:u'
{{#Wiki_filter:-                                     _
__n - T __, t:"ETF.O?CLITAN ED:50N CC''.TnNY sussmuarorcenean ruwcununescoeronrw.il POST OFFICE BOX 480 MIDDLETOWN. PENNSYLVANIA 17057 TELEPHONE 717 944-4041
                                                                          -
-Septecher 28, 1975
                                                                              .
-NON-RCUTINE 10 CAY REPORT 75-06 Mr. J. P. O'Reilly Directorate of Regulatory Operations Fegion 1 631 Park Avenue
      .     .         .
*King of Prussia, Pa. , 19406 Operating 1.icense CPR-50 Docket 50-239
                                                                                                      .
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                                                          -
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                            -
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t:"ETF.O?CLITAN ED:50N CC''.TnNY sussmuarorcenean ruwcununesco POST OFFICE BOX 480 MIDDLETOWN. PENNSYLVANIA 17057                   TELEPHONE 717 944-4041
                                          -                   Septecher 28, 1975
                                                                                                  -
NON-RCUTINE 10 CAY REPORT 75-06 Mr. J. P. O'Reilly Directorate of Regulatory Operations Fegion 1
* 631 Park Avenue King of Prussia, Pa. , 19406 Operating 1.icense CPR-50 Docket 50-239


==Subject:==
==Subject:==
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==Dear t'r. C'Drilly:==
==Dear t'r. C'Drilly:==


This telegram is to confim the conversation betwen Mr. Bert Davis (Region 1-hRC), and J. J. Colitz, TMI Unit 1 Superintendent, at 1130 cn September 23, 1975.
This telegram is to confim the conversation betwen Mr. Bert Davis (Region 1-hRC), and J. J. Colitz, TMI Unit 1 Superintendent, at 1130
.On 27 September between 1523 and 1600 an inadvertent release of radio-
.                  cn September 23, 1975.
.active material occurred over a period of appmximately 37 minutes.
On 27 September between 1523 and 1600 an inadvertent release of radio-               .
The inadvertent radioactive material release occurred due to the lifting of CH 'i57A relief valve w5f ch was caused by leakage through check valve DH-Vl4A while in the decay heat certoval operating mode.
active material occurred over a period of appmximately 37 minutes.
.Analysis of the radiation effluent monitor (RNAS) recorder charts and lccal Auxiliary Building sa oles indicated the radioactive material released v3s predeninately 133Xe (IC'M), and that the instantaneous 3 ncble gas release rate was 1.82x103 M /Sec. which is belcw the tec.' nical scecificatica limit of 1.2x105 M3/Sec. The average release rate over the 37 r:inute pcried of this release was 1.19x103 M3/Sec. with a total release of ncble gas of .792 curies.
The inadvertent radioactive material release occurred due to the lifting of CH 'i57A relief valve w5f ch was caused by leakage through check valve
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          .        DH-Vl4A while in the decay heat certoval operating mode.
Analysis of the radiation effluent monitor (RNAS) recorder charts and lccal Auxiliary Building sa oles indicated the radioactive material released v3s predeninately 133Xe (IC'M), and that the instantaneous ncble gas release rate was 1.82x103 M3 /Sec. which is belcw the tec.' nical scecificatica limit of 1.2x105 M3/Sec. The average release rate over the 37 r:inute pcried of this release was 1.19x103 M3/Sec. with a total release of ncble gas of .792 curies.
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Revision as of 13:21, 19 October 2019

Nonroutine 10-Day Rept 75-06 Re Unplanned Radioactive Release from Auxiliary Bldg.Caused by Lifting of DH-V57A Relief Valve Allowing Gaseous Escape Through Check Valve DH-V14A,predominantly Xe-133
ML19210A244
Person / Time
Site: Three Mile Island Constellation icon.png
Issue date: 09/28/1975
From: Colitz J
METROPOLITAN EDISON CO.
To:
Shared Package
ML19210A234 List:
References
NUDOCS 7910240955
Download: ML19210A244 (1)
v • d • e


Text

- _

-

.

. . .

.

_-- ..

-

.-.!_ .

-

2,. ,a w~-:u'

_ (f _

n - T __ ,

t:"ETF.O?CLITAN ED:50N CC.TnNY sussmuarorcenean ruwcununesco POST OFFICE BOX 480 MIDDLETOWN. PENNSYLVANIA 17057 TELEPHONE 717 944-4041

- Septecher 28, 1975

-

NON-RCUTINE 10 CAY REPORT 75-06 Mr. J. P. O'Reilly Directorate of Regulatory Operations Fegion 1

  • 631 Park Avenue King of Prussia, Pa. , 19406 Operating 1.icense CPR-50 Docket 50-239

Subject:

Unplanned Release of Radioactive Material at Three Mile Island through the Plant Vent from the Auxiliary Building

Dear t'r. C'Drilly:

This telegram is to confim the conversation betwen Mr. Bert Davis (Region 1-hRC), and J. J. Colitz, TMI Unit 1 Superintendent, at 1130

. cn September 23, 1975.

On 27 September between 1523 and 1600 an inadvertent release of radio- .

active material occurred over a period of appmximately 37 minutes.

The inadvertent radioactive material release occurred due to the lifting of CH 'i57A relief valve w5f ch was caused by leakage through check valve

. DH-Vl4A while in the decay heat certoval operating mode.

Analysis of the radiation effluent monitor (RNAS) recorder charts and lccal Auxiliary Building sa oles indicated the radioactive material released v3s predeninately 133Xe (IC'M), and that the instantaneous ncble gas release rate was 1.82x103 M3 /Sec. which is belcw the tec.' nical scecificatica limit of 1.2x105 M3/Sec. The average release rate over the 37 r:inute pcried of this release was 1.19x103 M3/Sec. with a total release of ncble gas of .792 curies.

.

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. .Lu t s u J J d LT' u

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.

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