Tank methanol
Pressure
Less
V-1 fails closed
Tank implode
Reagent release
PI-1
Consider PAL on PI-1
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Overfill tank
See event 4
Tank rupture if RV-1 fails
PI-1
Consider second high-level shutoff
Temperature of inlet is hotter than normal
Reagent release via V-1
Tank rupture if RV-1 fails
PI-1
What prevent high temperature of inlet
No
Same as less
PI-1
Temperature
Less
Temperature of inlet is colder than normal
Possible vacuum
Thermal stress on tank
Low tank pressure
Tank implode
Thermal stress on tank
What are pressure limit of tank?
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External fire
Tank fails
Reagent release
What could cause an external fire?