ML13262A117

Enclosure 4 - Scott Portzline Presentation

ML13262A117
Person / Time
Site:	Three Mile Island
Issue date:	08/28/2013
From:	Portzline S Three Mile Island Alert
To:	Buckley J NRC/FSME/DWMEP/DURLD/RDB
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ML13262A166	List: ML13262A111 ML13262A115 ML13262A117 ML13262A149 ML13262A152 ML13262A163
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Download: ML13262A117 (21)

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Three Mile Island, Unit 2, (TMI-2) Post-Shutdown Decommissioning Activities Meeting 8/28/2013 Scott D. Portzline Three Mile Island Alert

Importance of TMI Three Mile Island is to the US Nuclear Industry as Gettysburg is to US History

Record Preservation Before TMI is decommissioned, the public, and specifically Three Mile Island Alert wants to participate in some special ground rules regarding the timing, the conditions and the handling of TMIs decommissioning.

Unit 2 is of special interest because of the partial core melt accident. We want extensive input and additional meetings.

Record Preservation The record is incomplete.

High levels of radiation prevented proper investigations of certain equipment malfunctions.

Man-hours exposures

Record Preservation

• There remain many unanswered questions about what went wrong with components and systems.

• The NRCs investigators along with GPU/MED Ed and the Presidents Commission investigators could not explain numerous malfunctions.

Record Preservation Examining these components provides further opportunity to increase the technical knowledge database.

Historical accuracy is ALWAYS important.

Record Preservation Examine for additional evidence of tampering or sabotage.

Record Preservation There need to be a complete inventory of what remains at Unit 2. The inventory should be made publicly available.

Record Preservation Certain components should be preserved and sent to museums such as the Smithsonian Institution and the PA State Museum.

Smithsonian display State Museum Harrisburg PA

Public Oversight In order to meet these objectives, the public must be fully engaged.

radiation prevented a proper investigation The point of Loss of Coolant is unexplained 220 gallons per minute The reason the PORV valve stuck open has not been identified.

Radiation levels not worth the man-hours exposures.

Investigative Failures No one knows the triggering event This investigation was not able to identify the specific cause which led to the turbine trip on March 28, 1979

Investigative Failures Integrated Control System Failure The integrated Control System did not trigger a reactor runback as it was supposed to do three seconds into the events. This assured a SCRAM. No one knows why it failed.

Investigative Failures An important switch was rewired There is no explanation for a jumper wire which was added to a switch which caused a condensate booster pump to fail.

Investigator wanted to know who and why it was added.

Investigative Failures A Makeup Pump Fails to Start Injects water into the reactor to compensate for the loss of coolant.

Auxiliary Building Makeup Makeup Tank Pump

Technical and Historical Accuracy Before destroying the record, investigate the events and evidence which was not covered or understood by previous investigations The previous items are just 5 examples of the many unanswered safety factors.

Some have implications for safety today.

Criminal Evidence The Presidents Commission and the US Senate investigations suspected and requested sabotage investigations because of suspicious evidence and events at TMI. Further evidence may yet be discovered.

There has been more than 120 acts of sabotage and tampering at US nuclear plant. So much so that the FBI issued a warning about the increase of sabotage events at nuclear plants in 1983.

Letter requesting an FBI investigation We believe that the FBI can and should undertake such an investigation.

Presidents Commission

Component Inventory Necessary to accommodate public input and engagement

Record Preservation Certain components should be preserved and sent to museums such as the Smithsonian Institution and the PA State Museum.

Smithsonian display State Museum Harrisburg PA

• End