This is an interesting topic to me because it highlights some of the basic information we tend to overlook when making a decision.
1) The "old timers" say since nothing has happened we should continue the practice. I guess anymore I am an old timer, but .....
2) If you objectively look at serious accidents and fatalities, the resulting situations developed and occurred because people were doing what they always did, ignorant or obtuse to changing conditions, or a series of smaller events line-up and the serious nature of the final event became obvious all too quickly, and unavoidedly.
3) Because a fatality or serious injury has not occurred, does not justify continuing a practice that has obvious indicators for trouble. Such as:
a) The person sitting in a cage, or strapped onto a platform is more exposed to convective and radient heat loads. Keep in mind, it's the convective heat that carries the particulate and poisionous gases to the lungs. You won't filter those out.
b) A person in a cage or strapped on a platform cannot use flight response when subjected to intense heat. At least a firefighter on the ground can drop and deploy a shelter if cornered. The firefighter is in control. Not so when strapped to the vehicle.
c) There is greater exposure to roll-over injury and death when attached to the vehicle. We all know about the influence of center of gravity on sidehills, consequently the kind of vehicle used is important. Many of the wildland engines and "trucks" with slipon units, etc. naturally carry a high center of gravity. On flat terrain not as great a concern as operator skill, but very much a concern in the open hilly country throughout the US.
Experience may show success and it may show that the serious consequences of an act has not yet manifested. I would suggest the decision should be made by identifying all the hazards, rate the hazards based on risk to personnel and equipment, and how the risk can be mitigated. Is this a low frequency high risk situation, or a high frequency low risk situation. If it carries a high risk, and you cannot mitigate or eliminate it, sounds like a time to rethink the importance of the job, or change how you do business.
[This message has been edited by monte (edited May 02, 2000).]
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