Interagency Single Engine Air Tanker Operations Guide - National ...

INTERAGENCY SINGLE ENGINE AIR TANKER OPERATIONS GUIDE
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Out-of-service resources: Resources assigned to an incident but unable to
respond for mechanical, rest or personnel reasons.
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Patrol: (1) To travel a given route to prevent, detect and suppress fires. (2) To
go back and forth watchfully over a length of fireline during or after its
construction to prevent slop-overs and to control spot fires. (3) A person or
group carrying out patrol actions.
Perimeter: The total length of the outside edge of the burning or burned area.
Planning meeting: A meeting, held as needed throughout the duration of an
incident, to select strategies and tactics for incident control operations and for
service and support planning.
Pockets: Deep indentations of unburned fuel along the fire perimeter; normally,
fireline will be constructed across pockets and they are then burned out.
Prescribed burning: Controlled application of fire to wildland fuels in either
their natural or modified state. Done under specified environmental conditions
which allow the fire to be confined to a predetermined area and at the same time
to produce the intensity of heat and rate of spread required to attain planned
resource management objectives.
Pre-suppression: Activities in advance of fire occurrence to ensure effective
suppression action; includes recruiting and training, planning the organization,
maintaining fire equipment and fire control improvements and procuring
equipment and supplies.
Pre-treat: Laying retardant line in advance of the fire where groundcover or
terrain is best for fire control actions, or to reinforce a control line; often used in
indirect attack.
Progressive hose lay: Hose laid as it is used to suppress the fire. Lateral hose
lines are connected to the main hose line at regular intervals to assist in the fire
suppression effort and mop-up.
Protection boundary: The exterior boundary of an area within which a given
agency has assumed a degree of responsibility for emergency operations. It may
include lands protected under agreement or contract.
PSI, PSIG: Pounds per square inch of mercury; a measure of pressure.
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