ML20126B435

Submits Daily Highlight.On 840625,licensee Informed NRC That Primary to Secondary Leakage Detected in B once-through Steam Generator by Chemical Measurements of Boron & Cesium in Secondary Sys.Ltr Rept Wil Be Submitted

ML20126B435
Person / Time
Site:	Three Mile Island
Issue date:	06/27/1984
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Case E, Harold Denton, Edison G NRC
Shared Package
ML20126B295	List: 05000289/LER-1981-013, Forwards LER 81-013/01T-0 Re Leaking Found in Steam Generators.Event Reportable Per Tech Spec 6.9.2.A(3). Supporting Documentation Encl IA-84-897, Forwards Safety Evaluation Re Increase in once-through Steam Generator Primary to Secondary Leakage Rate,Per NUREG-1019 & Suppl 1.Rate Acceptable ML20126B293 ML20126B302 ML20126B316 ML20126B321 ML20126B337 ML20126B342 ML20126B358 ML20126B376 ML20126B390 ML20126B412 ML20126B435 ML20126B467 ML20126B475 ML20126B493 ML20126B504 ML20126B513 ML20126B520 ML20126B560 ML20126B563 ML20126B585 ML20126B592 ML20126B610 ML20126B618 ML20126B623 ML20126B635 ML20126B639 ML20126B648 ML20126B650 ML20126B656 ML20126B658 ML20126B667 ML20126B670 ML20126B684 ML20126B688 ML20126B701 ML20126B708 ML20126B716 ML20126B719 ML20126B739 ML20126B751 ML20126B758 ML20126B766 ML20126B784 ML20126B797 ML20126B806 ML20126B825 ML20126B831 ML20126B879 ... further results
References
FOIA-84-897 NUDOCS 8506140102
Download: ML20126B435 (1)

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. v. 3 NUCLEAR R5GULATORY COMMISSIONr

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Docket No. 50-289- '- - -

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H. Denton R. Vollmer"k MEMORANLUM FOR:

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'. G. Edison ' 8. Snydec D. Eisenhut ',

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John F. Stoir, Chief, Operating Reactors Branch No. 4, FROM: Division of Licensirg , .

SUBJECT:

DAILY HIGHLIGHT - TMI-1 .

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On June 25, the staff was informed by the licensee that primary to leakage was detected in the "B" OTSG at .TMI-1 by chemical me baron and cesium in the secondary system. The licensee .

a with the RCS pressurized to about 50 psig"with nitrogen. '

1 subsequently examined both the "B" and "A .- 0T the repaired tube to tubesheet interfaces.

Forthe"B"OTSG,onetube(80i-45)appearstobethesourceofmosto leakage (1.5 to 1.7 gal /hr. cold).

the repaired joint. .,

The lictnsee plans For the "A" 0TSG, three or four tubes show trace leaka ~

remove it from service.. .

'T TMI-1 has conducted two hot functional tests since the repairs w

' in July of 1963. ,

The licensee plans to submit a letter report on this matter within the few days.

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