krit.club logo

Our School—A Happy Place - Fire Safety and Emergency Preparedness

Grade 5CBSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

•

The Fire Triangle: For a fire to occur, three elements must be present: Fuel, Heat, and Oxygen. Removing any one of these elements will extinguish the fire. This can be represented conceptually as: Fuel+Heat+Oxygen→Fire\text{Fuel} + \text{Heat} + \text{Oxygen} \rightarrow \text{Fire}.

•

Fire Extinguisher - The PASS Method: This is the standard procedure for using a fire extinguisher. PP stands for Pull the pin, AA for Aim at the base of the fire, SS for Squeeze the handle, and SS for Sweep from side to side.

•

Stop, Drop, and Roll: If a person's clothes catch fire, they should not run. Running provides more oxygen to the flames. They must Stop where they are, Drop to the ground, and Roll over and over to smother the fire.

•

Emergency Evacuation: Schools conduct regular fire drills to ensure students know the quickest and safest route to the 'Assembly Point'. During an emergency, one must never use elevators, as a power failure could trap people inside.

•

First Aid for Burns: Minor burns should be treated by holding the affected area under cool running water for at least 1010 to 1515 minutes. Do not apply ice, butter, or ointments immediately as they can trap heat.

•

Prevention of Electrical Fires: Fires often start from short circuits or overloaded sockets. It is important to ensure that the total electrical load LL does not exceed the socket capacity CC, represented as L<CL < C.

📐Formulae

Fire Triangle=Fuel+Heat+Oxygen\text{Fire Triangle} = \text{Fuel} + \text{Heat} + \text{Oxygen}

PASS=Pull+Aim+Squeeze+Sweep\text{PASS} = \text{Pull} + \text{Aim} + \text{Squeeze} + \text{Sweep}

Evacuation Time=Total Distance to Assembly PointAverage Walking Speed\text{Evacuation Time} = \frac{\text{Total Distance to Assembly Point}}{\text{Average Walking Speed}}

💡Examples

Problem 1:

A school has two wings. Wing A has 4545 fire extinguishers and Wing B has 3838 fire extinguishers. How many fire extinguishers does the school have in total?

Solution:

45+3883\begin{array}{r} 45 \\ + 38 \\ \hline 83 \end{array}

Explanation:

To find the total number of fire extinguishers, we add the quantities from both wings using vertical addition.

Problem 2:

A safety inspector found that a school building needs 120120 smoke detectors. If they have already installed 8787, how many more do they need to install?

Solution:

120−8733\begin{array}{r} 120 \\ - 87 \\ \hline 33 \end{array}

Explanation:

Subtract the number of installed smoke detectors from the total requirement to find the remaining amount.

Problem 3:

If a student can walk at a speed of 22 meters per second and the assembly point is 120120 meters away, how much time (tt) will it take for the student to reach safety?

Solution:

Using the formula t=dst = \frac{d}{s}: t=120 m2 m/s=60 secondst = \frac{120\text{ m}}{2\text{ m/s}} = 60\text{ seconds}

Explanation:

The time taken to evacuate is calculated by dividing the total distance to the safety zone by the speed of movement. In this case, it takes 6060 seconds (or 11 minute).