National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

NUREG1410

Publication Date	1990
Page Count	556
Abstract	On March 20, 1990, the Vogtle Electric Generating Plant Unit 1, located in Burke County, Georgia, about 25 miles southeast of Augusta, experienced a loss of all safety (vital) ac power. The plant was in cold shutdown with reactor coolant level lowered to 'mid-loop' for various maintenance tasks. Both the containment building personnel hatch and equipment hatch were open. One emergency diesel generator and one reserve auxiliary transformer were out of service for maintenance, with the remaining reserve auxiliary transformer supplying both Unit 1 safety buses. The report documents the results of an Incident Investigation Team sent to Vogtle by the Executive Director for Operations of the U.S. Nuclear Regulatory Commission to determine what happened, identify the probable causes, and make appropriate findings and conclusions.
Keywords	Vogtle-1 reactor Power losses RHR systems Accident investigations PWR type reactors Reactor shutdown Nuclear power plants Georgia Mid-Loop operations Burke County(Georgia) Emergency preparedness
Source Agency	Nuclear Regulatory Commission
NTIS Subject Category	77H - Reactor Engineering & Nuclear Power Plants 97Q - Selected Studies In Nuclear Technology
Corporate Authors	Nuclear Regulatory Commission, Washington, DC.
Supplemental Notes	Also available from Supt. of Docs.
Document Type	Technical Report
NTIS Issue Number	199018

Loss of Vital AC Power and the Residual Heat Removal System during Mid-Loop Operations at Vogtle Unit 1 on March 20, 1990.

Loss of Vital AC Power and the Residual Heat Removal System during Mid-Loop Operations at Vogtle Unit 1 on March 20, 1990.
NUREG1410

Publication Date	1990
Page Count	556
Abstract	On March 20, 1990, the Vogtle Electric Generating Plant Unit 1, located in Burke County, Georgia, about 25 miles southeast of Augusta, experienced a loss of all safety (vital) ac power. The plant was in cold shutdown with reactor coolant level lowered to 'mid-loop' for various maintenance tasks. Both the containment building personnel hatch and equipment hatch were open. One emergency diesel generator and one reserve auxiliary transformer were out of service for maintenance, with the remaining reserve auxiliary transformer supplying both Unit 1 safety buses. The report documents the results of an Incident Investigation Team sent to Vogtle by the Executive Director for Operations of the U.S. Nuclear Regulatory Commission to determine what happened, identify the probable causes, and make appropriate findings and conclusions.
Keywords	Vogtle-1 reactor Power losses RHR systems Accident investigations PWR type reactors Reactor shutdown Nuclear power plants Georgia Mid-Loop operations Burke County(Georgia) Emergency preparedness
Source Agency	Nuclear Regulatory Commission
NTIS Subject Category	77H - Reactor Engineering & Nuclear Power Plants 97Q - Selected Studies In Nuclear Technology
Corporate Authors	Nuclear Regulatory Commission, Washington, DC.
Supplemental Notes	Also available from Supt. of Docs.
Document Type	Technical Report
NTIS Issue Number	199018