CTA Report, Draft 1, ISP Review - US Chemical Safety and Hazard ...
CTA Report, Draft 1, ISP Review - US Chemical Safety and Hazard ...
CTA Report, Draft 1, ISP Review - US Chemical Safety and Hazard ...
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APPENDIX G: Logic Tree Diagram<br />
Seven deaths,<br />
37 injuries<br />
Employees<br />
present<br />
Secondary cascading dust<br />
explosions in confined<br />
areas <strong>and</strong> rapidly spreading<br />
fire<br />
Fire from<br />
secondary dust<br />
explosions<br />
spread<br />
throughout<br />
production areas<br />
Combustible dust<br />
suspended in the<br />
production areas<br />
in explosive<br />
concentrations<br />
Firewall<br />
placement in<br />
production area<br />
LTA<br />
Production area<br />
was not designed<br />
with blastresistant<br />
physical<br />
barriers<br />
Normal<br />
Force from Line 405<br />
explosion suspends<br />
combustible dust in<br />
production areas<br />
Accumulated<br />
combustible dust on<br />
flat surfaces<br />
throughout<br />
production areas<br />
See<br />
Subtree A<br />
Combustible dust<br />
was generated by<br />
inappropriate<br />
methods used to<br />
clean process<br />
equipment<br />
Housekeeping<br />
program did not<br />
adequately<br />
control<br />
combustible<br />
dusts<br />
Ledges <strong>and</strong> other<br />
horizontal flat<br />
surfaces within<br />
facility not<br />
minimized<br />
Building design for<br />
h<strong>and</strong>ling combustible<br />
dusts LTA<br />
Building design<br />
for h<strong>and</strong>ling<br />
combustible<br />
dusts LTA<br />
See<br />
Subtree C<br />
See<br />
Subtree C<br />
124