Informe Final De Incendio Usa
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Publicado: 7 de junio de 2012
U.S. C H E M I C AL S A F E T Y A N D H A Z A R D I N V E S T I G A T I O N B O A R D
INVESTIGATION REPORT
SUGAR DUST EXPLOSION AND FIRE
(14 Killed, 36 Injured)
IMPERIAL SUGAR COMPANY
PORT W ENTWORTH, GEORGIA FEBRUARY 7, 2008
KEY ISSUES:
• COMBUSTIBLE DUST HAZARD RECOGNITION • MINIMIZING COMBUSTIBLE DUST ACCUMULATION IN THE W ORKPLACE • EQUIPMENT DESIGN AND MAINTENANCE
Report No.2008-05-I-GA September 2009
Contents
EXECUTIVE SUMMARY .......................................................................................................................... 1 1.0 INTRODUCTION ........................................................................................................................... 3 1.1 1.2 1.3 Background......................................................................................................................... 3 Investigative Process........................................................................................................... 5 Imperial Sugar Company .................................................................................................... 6 1.3.1 1.3.2 1.4 Corporate Governance............................................................................................ 6 Corporate and Facility Management ...................................................................... 7
Facility Description............................................................................................................. 8 1.4.1 1.4.2 1.4.3 1.4.4 1.4.5 Granulated Sugar Storage Silos............................................................................ 10 Silos 1 and 2 Steel Conveyor Belt ........................................................................ 14 Bosch Packing Building ....................................................................................... 15 South Packing Building ........................................................................................ 16 Sugar Spillageand Dust Control .......................................................................... 17
2.0
INCIDENT DESCRIPTION .......................................................................................................... 19 2.1 2.2 Explosions and fires .......................................................................................................... 19 Emergency Response........................................................................................................ 21
3.0
INCIDENT ANALYSIS ................................................................................................................ 22 3.1 3.2 3.3 Combustible Dust Characteristics ..................................................................................... 22 Combustible DustExplosions ........................................................................................... 26 The Port Wentworth Incident............................................................................................ 27 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.4 Pre-explosion Sugar Dust Incident History .......................................................... 28 Steel Belt Conveyor Modifications...................................................................... 29 Primary Event Location ........................................................................................ 29 Primary Event Combustible Dust Source ............................................................. 32 Secondary Dust Explosions ..................................................................................34
Ignition Sources ................................................................................................................ 35 3.4.1 3.4.2 Open Flames and Hot Surfaces ............................................................................ 35 Ignition Sources Inside the Steel Belt Enclosure .................................................. 36
3.5 3.6
Worker Training...
INVESTIGATION REPORT
SUGAR DUST EXPLOSION AND FIRE
(14 Killed, 36 Injured)
IMPERIAL SUGAR COMPANY
PORT W ENTWORTH, GEORGIA FEBRUARY 7, 2008
KEY ISSUES:
• COMBUSTIBLE DUST HAZARD RECOGNITION • MINIMIZING COMBUSTIBLE DUST ACCUMULATION IN THE W ORKPLACE • EQUIPMENT DESIGN AND MAINTENANCE
Report No.2008-05-I-GA September 2009
Contents
EXECUTIVE SUMMARY .......................................................................................................................... 1 1.0 INTRODUCTION ........................................................................................................................... 3 1.1 1.2 1.3 Background......................................................................................................................... 3 Investigative Process........................................................................................................... 5 Imperial Sugar Company .................................................................................................... 6 1.3.1 1.3.2 1.4 Corporate Governance............................................................................................ 6 Corporate and Facility Management ...................................................................... 7
Facility Description............................................................................................................. 8 1.4.1 1.4.2 1.4.3 1.4.4 1.4.5 Granulated Sugar Storage Silos............................................................................ 10 Silos 1 and 2 Steel Conveyor Belt ........................................................................ 14 Bosch Packing Building ....................................................................................... 15 South Packing Building ........................................................................................ 16 Sugar Spillageand Dust Control .......................................................................... 17
2.0
INCIDENT DESCRIPTION .......................................................................................................... 19 2.1 2.2 Explosions and fires .......................................................................................................... 19 Emergency Response........................................................................................................ 21
3.0
INCIDENT ANALYSIS ................................................................................................................ 22 3.1 3.2 3.3 Combustible Dust Characteristics ..................................................................................... 22 Combustible DustExplosions ........................................................................................... 26 The Port Wentworth Incident............................................................................................ 27 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.4 Pre-explosion Sugar Dust Incident History .......................................................... 28 Steel Belt Conveyor Modifications...................................................................... 29 Primary Event Location ........................................................................................ 29 Primary Event Combustible Dust Source ............................................................. 32 Secondary Dust Explosions ..................................................................................34
Ignition Sources ................................................................................................................ 35 3.4.1 3.4.2 Open Flames and Hot Surfaces ............................................................................ 35 Ignition Sources Inside the Steel Belt Enclosure .................................................. 36
3.5 3.6
Worker Training...
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