Keith Willshaw wrote:

"
To get a major disaster out of a modern process plant, you pretty
much have to be in the control room. Bhopal and Chernobyl (sp?)
are examples.

Tear open a line in the wrong place and you have the
potential for a major accident. For example at the outlet
from the furnaces of a cracking unit the gas is above its
self ignition temperature, a fracture here would be VERY
bad news.

In the case of the Flixborough accident in the UK a pressure
vessel was bypassed by the maintenance dept using pipes and bellows units.
Unfortunately the bypass was not properly anchored
and a slug of liquid caused the bypass to tear loose.

However the idea of targeting the intruder with an air strike is simply ludicrous.
almost any facility vulnerable to damage by a bulldozer causing a disaster would be
much more vulnerable to stray rounds from an air strike.

Vince