Not to get too far in the techno babble, it had to do with the duration of the burn pulses between explosives at the higher end (faster burn rate) as opposed to the burn pulse duration with explosives at the lower end (slower burn rate).
The pressure from the lower speed detonation exceeded the capability of the container to flex and vent.
A very simple explanation for something that is rather complicated.
EOD messed up on this one. Some tech was focusing on the amount of "explosives" and decided that the total weight was lower than the rating of the container. He or she did this without considering the different effects that different explosives can have during the detonation pulse.
I don't know where the failure was
- Training
- Supervision
- Complacency
- Impatience
Could be a combination of these and some others.
Bottom line is that this was entirely preventable.
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abusus non tollit usum - A right should NOT be withheld from people on the basis that some tend to abuse that right.
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