ML18041A178

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Forwards AEOD Engineering Evaluation Rept on BWR Overfill Events Resulting in Floodings of Steam Lines.Little Damage Experienced as Result of Flooding Events.Nrc Should Monitor Licensee Actions Prior to Plant Restart.W/O Stated Encl
ML18041A178
Person / Time
Issue date: 04/15/1988
From: Rosenthal J
NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To: Rossi C
Office of Nuclear Reactor Regulation
References
CON-IIT07-748-91, CON-IIT7-748-91 AEOD-E801, NUREG-1455, NUDOCS 8804260137
Download: ML18041A178 (2)


Text

.",

HEHORANDUH FOR:

Charles E. Rossi, Director Division of Operational Events Assessment Office os Nuclear Reactor Regulation AEOD/E80j THRU:

FROH:

SUBJECT:

Thomas H. Novak, Director Division of Safety Programs Office for Analysis and Evaluation Of Operational Data Jack E. Rosenthal, Chief Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation Of Operational Data BWR OVERFILL EVENTS RESULTING IN STEAH LINE FLOODING Enclosed for your information is an AEOD Engineering Evaluation report on BWR overfill events that have resulted in the floodings of steam lines.

These events have occurred at several BWRs and have potential safety significance.

The study found that little actual damage has been experienced as a result of this type of event.

However, we. do believe that the potential for equipment damage exists and that any damage which does occur should be fixed prior to restart.

Because our review noted some cases where the initial licensee review of the event did not adequately address or assess all the safety concerns asso-ciated with these events, we believe NRC should monitor licensee actions prior to plant restart.

OriginaI signed by jack E. Rosenthal

Enclosure:

As stated Distributon:

PDR ROAB R/F JRosenthal JKauffman GLanik KBlack HWilliams VBenaroya

~oyak CHe1temes EJordan JJohnson WLanning Jack E. Rosenthal, Chief Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation Of Operational Data

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