Seismic Walkdown

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Columbia Generating Station, Seismic Probabilistic Risk Assessment

Richland, WA

Project Contacts: Philip Hashimoto, Mohamed Talaat

After the Fukushima Daiichi accident, the U.S. Nuclear Regulatory Commission (NRC) issued 10 CFR 50.54(f), a letter requiring licensees to perform a re-evaluation of seismic hazard and take further actions if it exceeds their design basis. In...

Services:Structural Investigation

Markets:Nuclear

Keywords:Nuclear Facility, Seismic Probabilistic Risk Assessment (PRA), Seismic Walkdown

Columbia Generating Station, Spent Fuel Pool

Newport Beach, CA

Project Contacts: Philip Hashimoto, Mohamed Talaat

After the Fukushima Daiichi accident, the U.S. Nuclear Regulatory Commission (NRC) issued 10 CFR 50.54(f), a letter requiring licensees to perform a reevaluation of seismic hazard and take further actions if it exceeds their design basis. In...

Services:Structural Investigation

Keywords:Nuclear Facility, Seismic Analyses, Seismic Walkdown, Soil-Structure Interaction

Diablo Canyon Power Plant

Avila Beach, CA

Project Contacts: Gregory Hardy

Diablo Canyon Power Plant, in operation since 1985, uses two Westinghouse Pressurized Water Reactor units to produce 18,000 gigawatt-hours of electricity. PG&E retained SGH to support the re-evaluation of their Long Term Seismic...

Services:Structural Investigation

Markets:Nuclear

Keywords:Nuclear Facility, Seismic Probabilistic Risk Assessment (PRA), Seismic Walkdown, Soil-Structure Interaction

Chinshan, Maanshan, and Kuosheng Nuclear Power Plants

Taiwan

The Institute of Nuclear Energy Research (INER) of Taiwan retained SGH to support the new Seismic Probabilistic Risk Assessments (SPRAs) of three Nuclear Power Plants (NPP), which each use different reactor designs. The Chinshan NPP is a...

Services:Structural Investigation

Markets:Nuclear

Keywords:Nuclear Facility, Seismic Probabilistic Risk Assessment (PRA), Seismic Walkdown

KORI Unit 3 Nuclear Power Plant, Periodic Safety Review Seismic Qualification

Seoul, South Korea

Project Contacts: Gregory Hardy, Kyuho Hwang, Wen-How Tong

Kori Unit 3 is a 900 MW pressurized water reactor that has been in service since 1985. All operating nuclear power plants in Korea are required to perform a Periodic Safety Review (PSR) every ten years against eleven safety elements per the...

Services:Structural Investigation

Markets:Nuclear

Keywords:International, Power, Seismic Walkdown

Idaho National Laboratory, Advanced Test Reactor, Equipment Seismic Qualification

Idaho Falls, ID

Project Contacts: Philip Hashimoto

The Department of Energy uses the Advanced Test Reactor (ATR) at Idaho National Laboratory to test nuclear fuel systems and materials. SGH engineers performed the experienced-based seismic qualification of Seismic Category I equipment at the ATR...

Services:Structural Design

Markets:Nuclear

Keywords:Nuclear Facility, Seismic Analyses, Seismic Walkdown

Mühleberg Nuclear Power Plant

Mühleberg, Switzerland

Project Contacts: Philip Hashimoto

The 1,097 MW power plant went into commercial operation in 1971 and consists of a single-unit boiling water reactor. The owner/operator of the Mühleberg Nuclear Power Plant (KKM) needed to submit an updated Level 1 probabilistic safety...

Services:Structural Investigation

Markets:Nuclear

Keywords:International, Nonlinear, Nuclear Facility, Seismic Probabilistic Risk Assessment (PRA), Seismic Walkdown, Soil-Structure Interaction

Idaho National Laboratory, Advanced Test Reactor, Diesel Generator for Deep Well No. 4

Project Contacts: Philip Hashimoto

Deep Well No. 4 provides make-up water to the Advanced Test Reactor (ATR) in the event of a seismic-induced loss-of-coolant accident. A new diesel generator system was required to supply backup power to Deep Well No. 4. The associated structures...

Services:Structural Design

Markets:Nuclear

Keywords:Machines and Equipment, Mechanical/Electrical System, Nuclear Facility, Seismic Engineering and Retrofit, Seismic Walkdown

Idaho National Laboratory, Advanced Test Reactor (INL ATR) SPRA

Idaho National Laboratory, ID

Project Contacts: Philip Hashimoto

The Department of Energy uses the Advanced Test Reactor (ATR) at Idaho National Laboratory to test nuclear fuel systems and materials. The light-water moderated and cooled reactor has a four-leaf clover design that allows for a variety of testing...

Services:Structural Investigation

Markets:Nuclear

Keywords:Nuclear Facility, Seismic Analyses, Seismic Probabilistic Risk Assessment (PRA), Seismic Walkdown