Max904511 Flashcards
(265 cards)
According to the Recommended Practice, principles of firefighting with foam, firefighting foam improves the extinguishing performance of water on many fires. Depending on the foam, list how this may be achieved.
Firefighting foam improves the extinguishing performance of water in several ways, depending on the type of foam being used. The key mechanisms include:
1. Surface Cooling:
• Foam allows water to spread more effectively over surfaces, enhancing its cooling effect and reducing the heat of the fire.
2. Smothering (Oxygen Exclusion):
• Foam creates a barrier between the fuel and the surrounding air, cutting off the oxygen supply needed for combustion.
3. Vapor Suppression:
• Foam prevents the release of flammable vapors from the fuel surface, reducing the risk of re-ignition.
4. Fuel Separation:
• Foam physically isolates the fuel from the fire by covering it with a stable foam blanket, which interrupts the fire triangle (fuel, oxygen, heat).
5. Adhesion to Surfaces:
• Certain foams adhere to vertical or irregular surfaces, providing prolonged protection and cooling of exposed areas.
6. Increased Penetration:
• Some foams, like wetting agents, reduce the surface tension of water, enabling it to penetrate porous or tight surfaces, which is particularly useful for Class A fires (solid combustibles).
7. Heat Resistance:
• A properly formulated foam layer resists breaking down under high temperatures, maintaining its protective qualities longer.
Each type of foam (e.g., Aqueous Film-Forming Foam [AFFF], Class A foam, Protein foam, or Alcohol-Resistant AFFF) is optimized for specific fire scenarios and contributes differently to fire suppression.
According to the Recommended Practice, Automatic External Defibrillator (AED) operation is based on three functions which conform to the internationally accepted algorithm of basic life support using AEDs. List these functions.
- Rhythm Analysis
The AED automatically analyzes the heart rhythm of the patient to determine whether a shockable rhythm (e.g., ventricular fibrillation or pulseless ventricular tachycardia) is present.- Energy Delivery (Defibrillation)
If a shockable rhythm is detected, the AED prompts the user to deliver a defibrillation shock to help restore a normal heart rhythm. - Guided CPR Assistance
Many AEDs provide real-time audio or visual instructions to guide rescuers through chest compressions and rescue breathing during cardiopulmonary resuscitation (CPR).
- Energy Delivery (Defibrillation)
According to Operations Bulletin 2012/03, list the properties of Natural gas.
Natural gas is:
• a fossil fuel which contains 95% methane (CH4)
• naturally odourless but has an organic sulphur compound added to make it more readily detectable
• non-toxic but it is an asphyxiant (excludes air)
• highly flammable and has explosive limits of 5 - 15% in air
• lighter than air and disperses rapidly.
According to the SOG- acetylene is a very volatile gas. Exploding cylinders can penetrate double brick walls or metal freight containers and land 200m away. How many hours after the cylinder is removed from the fire or heat source, if it is not cooled, can this explosion occur?
Explosion Timing for Acetylene Cylinders:
An acetylene cylinder, if not adequately cooled after exposure to fire or heat, can explode up to 24 hours after being removed from the heat source.
According to the SOGs - When providing fire protection for helicopter hot refuelling there are many factors for the FRNSW Commander to consider. List these factors.
The FRNSW Commander should consider the:
• number and size of helicopters using the landing site
• expected number of landings and take-offs
• amount and type of fuel stored on site, and
• availability of reticulated water for firefighting.
If required, the FRNSW Commander shouid request the attendance of additional appliances, foam trailers or bulk water supplies.
According to the SOG - When providing fire protection for helicopter hot refuelling, list the information the airbase manager must provide in regard to safety.
During refuelling, firefighters in full PPE will stand by with lines of hose charged, foam eductor attached and B Class foam ready to be inducted.
• Prevent water or foam streams from hitting moving rotors as this may cause catastrophic failure of the rotors and cause serious injury or death for people nearby.
• When life is not at risk, advice should be sought on how to minimise damage to the aircraft before applying foam or water streams.
• When life is at risk, the FRNSW Commander should direct firefighters to apply foam to a fuel fire immediately.
According to the Recommended Practice - List the 5 typical scenarios for Attack and Lay Pack use.
Structure fires that cannot be directly accessed from the footpath
• Fires in high rise buildings
• Investigating automatic fire alarms
• Protecting property from bushfires
• Bush and grass fires in difficult to access locations.
Complete the following in relation to the Fire and Rescue NSW Act 1989 Part 3, Division 1, Section 11 Brigades to proceed with speed to suspected fires or hazardous material incidents-
(1) When there is an alarm of fire…….
(2) When there is a report of hazardous material incident………….
(a) (b)
(1) When there is an alarm of fire, a fire brigade must, despite anything to the contrary in any Act, proceed with all speed to the fire and try by all possible means to extinguish it and save any lives and property that are in danger.
(2) When there is a report of a hazardous material incident, a fire brigade must, despite anything to the contrary in any Act–
(a) proceed with all speed to the site of the incident, and
(b) try by all possible means to render the site of the incident safe and save any lives and property that are in danger.
Complete the following in relation to the Fire and Rescue NSW Act 1989 Part 3, Division 1, Section 12, Investigation of reported fires and Hazardous material incidents-
(1) The officer in charge may,
(a)
(b)
(2)
(1) The officer in charge may, with or without members of a fire brigade, enter any place-
(a) in respect of which an alarm of fire is raised to ascertain whether there is a fire at the place, or
(b) in respect of which a report of a hazardous material incident has been made to ascertain whether there is any hazardous material at the place that is, or is about to be, the subject of a hazardous material incident.
(2) Reasonable force, whether by breaking down gates or fences or breaking open doors or otherwise, may be used to gain entry.
Section 13, of the Fire and Rescue NSW Act 1989 states the “general powers of officers at fires and hazardous material incidents”- State this provision.
13 General powers of officers at fires and hazardous material incidents
(1) At a fire, the officer in charge
(a) may take such measures as the officer thinks proper for the protection and saving of life and property and for the control and extinguishing of the fire, and
(b) is to control and direct the operations of any fire brigade.
(1A) At the site of a hazardous material incident, the officer in charge—
(a) may take such measures as the officer thinks proper for the protection and saving of life and property, for confining and ending the incident and for rendering the site safe, and
(b) is to control and direct the operations of any fire brigade.
The site is taken to be such area in the vicinity of the incident as is for the time being determined by the officer in charge.
(2) If the fire is a bush fire (including a grass fire), the officer in charge is, as far as practicable, to carry into effect any plan of operations in force under section 52 of the Rural Fires Act 1997 in relation to the place where the fire occurs.
(3) The following provisions of this Division are intended to be particular examples of the way in which functions under this section can be exercised and are not intended to limit the generality of this section.
Division 1 of the Fire and Rescue NSW Act 1989 lists the powers at fires and hazardous material incidents. State the provisions of Section 19- “General power to remove persons or obstacles.”
The officer in charge at a fire or hazardous material incident may cause to be removed any person, vehicle, vessel or thing the presence of whom or which at or near a fire or hazardous material incident might, in the officer’s opinion, interfere with the work of any fire brigade or the exercise of any of the officer’s functions.
At an incident that has been declared a crime scene, a member of the public seeks details from you, the senior firefighter/officer on duty, about the incident. State the provisions of Fire and Rescue NSW Regulation (2023), Clause 22, Disclosure of information.
A firefighter must not disclose information obtained in the firefighter’s capacity as a firefighter unless the disclosure is made
(a) in the exercise of the firefighter’s functions, or (b)
about factual matters that are generally available to the public, or
(c)
by an approved firefighter to media representatives about operations at a fire or other incident, or
(d)
at the direction or with the permission of the Commissioner, or
(e) with another lawful excuse.
Section 17 of the Fire and Rescue NSW Regulation (2023) refers to unacceptable behaviour. List five circumstances when a firefighter’s behaviour would be deemed unacceptable.
Unacceptable Firefighter Behaviour
1. Violence or threats.
2. Discrimination or harassment.
3. Intoxication while on duty.
4. Disobedience of lawful orders.
5. Neglect of duties or unsafe practices.
According to Standing Orders, to avoid serious accidents at intersections when responding to an emergency, what are the two actions drivers of responding vehicles should take when proceeding through traffic signals and stop signs.
Intersection Safety During Emergency Response
1. Slow down and stop if necessary to ensure safety.
2. Proceed only when safe to do so, regardless of signals.
According to Standing Orders, when are seatbelts required to be worn when travelling in FRNSW vehicles (including tankers)?
Seatbelt Use in FRNSW Vehicles
Seatbelts must be worn at all times when the vehicle is in motion.
Section 27 of the Crown Employees (Fire and Rescue NSW Permanent Firefighting
Staff) Award 2023 states the Notice of Transfer that is required to be given by the Commissioner when an employee is to be transferred to a new location and/or a different platoon. List and detail the three provisions for these as stated in this section.
27.1.1
Seven (7) days notice when the transfer is within the same fire district or within the GSA and on the same platoon,
27.1.2
Fourteen (14) days notice when the transfer is within the same fire district or within the GSA but to a different platoon,
27.1.3
Twenty eight (28) days notice when the transfer is outside the GSA or the employee’s current fire district, and such notice shall be confirmed in writing.
State the two provisions under the Fire and Rescue NSW Regulation (2023), Part 3, Section 14: Firefighters to acquire and maintain knowledge of legislation, orders, and functions.
Knowledge of Legislation and Orders
1. Firefighters must acquire and maintain knowledge of FRNSW legislation, SOGs, and functions.
2. Firefighters must comply with all policies and procedures.
According to Recommended Practice- List the general safety points that must be observed at all times when using the Attack and Lay Pack.
Attack and Lay Pack Safety Points
1. Ensure correct hose deployment.
2. Avoid kinking hoses.
3. Maintain control of water pressure.
4. Use PPE and maintain situational awareness.
According to the Fire Investigation toolkit on the Intranet, list when you should request FIRU for assistance?
When to Request FIRU Assistance
1. Suspected arson.
2. Fatalities or injuries at fire scenes.
3. Fires involving significant property loss.
4. Unusual or suspicious circumstances.
Found in the toolkit on the Intranet, provide the full name of the form populated by firefighters that gives the Fire Investigator a summary of your observations on arrival and your actions during the fire.
SOFA
Summary of observations & firefighter actions
According to Definitions on the Intranet - Describe Backdraught.
During the smouldering phase of a fire, in a confined space, fire gases may be at or above their ignition temperature, but will not have burned because of oxygen deficiency. Suddenly admitting air, by opening doors or breaking windows, may cause these gases to burn rapidly. The sudden release of energy as the gases are ignited causes an immediate and violent pressure rise. If there are insufficient openings to vent the pressure, an explosion will occur. This type of explosion is called a backdraught.
According to SOGs, - list your role and tasks if you are the first arriving Station Officer into Staging.
The first arriving officer in Staging becomes the Staging Officer, with his or her crew assisting. From that point, the IC only needs to speak with one person (the Staging Officer) to deploy resources into the incident. Staging is similar to other Sectors or Groups, but does not operate within the hazard zone.
According to SOGs, - describe the order model of communication and when it must be used.
Order Model of Communication
• The order model involves:
1. Sender gives a clear and concise order.
2. Receiver acknowledges the order and repeats it back.
3. Sender confirms the repeated order.
• This model must be used during critical operations to ensure clarity and avoid miscommunication.
According to the GSD for Incident Management, – an Incident Management System is a standardised method used to manage all types of incidents. The method is adaptable and scalable to the incident type and size. List what it enables the Incident Controller to do and when an Incident Management System is required to be used at incidents FRNSW attends?
Incident Management System
• Enables the Incident Controller to:
1. Plan and control the incident effectively.
2. Allocate resources appropriately.
3. Ensure safety of personnel and public.
4. Maintain clear communication and coordination.
When required:
• The system must be used at all incidents attended by FRNSW, regardless of size or type.