Seismic Qualification Of a 4 MW Emergency Power Generator Set

Seismic Qualification Of a 4 MW Emergency Power Generator Set

David W. Brandes
Caterpillar, Inc. Electric Power
Nuclear Emergency Diesel Generators

September 2015

ABSTRACT

Operation during and after a seismic event is the typical requirement for emergency equipment installed in a nuclear facility. Data from shake table testing of a large emergency generator set while operating is often not available. This paper covers the qualification process including representative static structural analysis, shake table testing and the investigation of structural data taken from mobile applications using the C175-20 engine.

Introduction

Two nuclear facilities in the Czech Republic required additional emergency diesel generators (EDGs) for station blackout (SBO) support. The site specification called for seismic qualification covering operation during and after the seismic event. NUREG/ CR-0098 was the guiding regulation. The product selected for installation was the 4 MW Cat® C175-20 diesel generator set. Each nuclear facility required two units.