- What happens to the execution of the response operation or
task in terms of time and space if the operation is changed or
if organisational or technical changes are made? A complete
unit could, for example, be eliminated during an ongoing ope-
ration: a pumping appliance could drive off the road during
the turnout, or a large quantity of hose could be destroyed in
connection with a forest fire. - Which circumstances steer the use of time, or, more precisely,
the use of time and space? Examples of such circumstances
are the time constants discussed above, which place certain
limitations on the use of time and space. - What are the effects of the various phenomena that exist
side by side in time and space? What are the consequences
of the coexistence in the time and space? A fire, for
example, affecting an LPG tank can be taken as a case
consisting of two phenomena existing simultaneously (and
which also affect one another). The fire is one phenomenon
and the transfer of energy to the LPG in the tank another;
which problem is the biggest and consequently the one which
should be tackled first? Another example could be two sepa-
rate, simultaneous fires in a large forest area in the time and
space which will have both independent and combined conse-
quences. What restrictions will this result in, for the separate
responses and for the system as a whole?
The command system created for the municipal structure for pro-
viding rescue services must naturally be conscious of time prior
to and when one or more response operations are being executed.
Control restrictions.
Because of the risk of
contamination,
emergency services
personnel may have
limited access to a
nuclear installation.