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Zorluk: OrtaFires and Fire Extinguisher Use

A commercial driver responds to an incipient flame near the trailer landing gear using an onboard portable fire extinguisher. Arrange the standard PASS protocol steps in the correct chronological order required to safely and effectively discharge the extinguisher.

  1. 1Pull the lock pin from the handle mechanism to break the tamper seal.
  2. 2Aim the nozzle or discharge horn low toward the base of the fire from a safe upwind distance.
  3. 3Squeeze the operating lever to release the pressurized extinguishing agent.
  4. 4Sweep the nozzle smoothly from side to side across the base of the fire until all flames are extinguished.

Cevap

Pull the pin, aim at the base of the fire, squeeze the operating lever, and sweep from side to side (PASS protocol).
The established standard for operating a portable fire extinguisher follows the PASS acronym: first Pull the lock pin to release the safety lock, second Aim the nozzle low at the base of the fire, third Squeeze the handle lever to initiate chemical discharge, and fourth Sweep side to side across the fuel source until the fire is completely extinguished.

Adım Adım Çözüm

1
Disengage the safety mechanism by pulling the pin.
The extinguisher discharge trigger is unlocked.
The tamper seal and pin prevent accidental discharge and must be cleared first.
2
Direct the nozzle toward the base of the flames from an upwind stance.
The extinguishing agent will strike the fuel source rather than the rising flames.
Aiming high at the flames disperses agent into the air without smothering the combustion source.
3
Compress the operating lever.
The internal valve opens and discharges the chemical agent under pressure.
Pressure release must be initiated while maintaining steady aim at the base.
4
Move the discharge stream in a sweeping horizontal motion.
The blanket of extinguishing agent covers the entire burning perimeter.
A sweeping motion smothers reignition pockets across the full fuel area.

Anahtar Kavram

The standard PASS operational sequence (Pull, Aim, Squeeze, Sweep) for commercial motor vehicle portable fire extinguishers.
Tahmini Süre:1m 0s
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Konular

Fires and Fire Extinguisher Use

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