What Is The First Step That Must Be Done Before Anyone Enters The Explosion Site?

What is the first step that must be done before anyone enters the explosion site?

The entire bomb site must be systematically searched with great care given to recovering any trace of a detonating mechanism

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What do you do in the event of an explosion?

• Get under a sturdy table or desk if things are falling around you. …
• Do not use elevators.
• Stay low if there is smoke. …
• Check for fire and other hazards.
• Once you are out, do not stand in front of windows, glass doors or other potentially hazardous areas.

What are the safety procedures when responding to an explosive incident?

• Keep the caller on the line as long as possible. …
• DO NOT HANG UP, even if the caller does.
• If possible, signal or pass a note to other staff to listen and help notify authorities.
• Write down as much information as possible—caller ID number, exact wording of threat, type of voice or behavior, etc.

How is evidence collected in an explosion case?

Evidence That May be Collected

By

thoroughly documenting the condition of the scene

, including any structural damage and injuries or fatalities, investigators can slowly piece together what occurred. Fragments of an exploded device will often be left intact, including switches, wiring, timers and circuit boards.

How do you manage an explosion?

prevent the formation of an explosive atmosphere, including by ventilation. collect, contain and

remove

any releases to a safe place. avoid ignition sources. avoid adverse conditions (such as exceeding pressure/temperature limits) that could lead to danger.

How do you respond to a fire emergency?

1. Activate the fire alarm pull station and evacuate the building.
2. Do not use the elevators. Exit through a stairway that leads directly outside. Be familiar with at least two means of exit from your area.
3. Call the University Police at x2911 from a “safe” phone near an exit. Provide information.

What are the procedures for bomb threat in the hotel?

Following actions to be take by the hotel management team:

Call up urgent meeting with all HOD’s on the designated area to start the emergency response plan

. Notify the Police or other officials responsible for handling Bomb threats . Assist the Police with directions and layout of your hotel to initiate the search.

What should I do in case of a fire?

• Know how to safely operate a fire extinguisher.
• Remember to GET OUT, STAY OUT and CALL 9-1-1 or your local emergency phone number.
• Yell “Fire!” several times and go outside right away. …
• If closed doors or handles are warm or smoke blocks your primary escape route, use your second way out.

What are primary explosives?

Primary explosives are

very sensitive materials that can be easily ignited by small stimuli of heat, impact, friction, and electrostatic

. … Primary explosives are usually in milligram quantities that are part of an energetic train that is required to set off large quantity of secondary explosives.

How does an explosive work?

A general theory of explosives is that the

detonation of the explosives charge causes a high-velocity shock wave and a tremendous release of gas

. The shock wave cracks and crushes the rock near the explosives and creates thousands of cracks in the rock. These cracks are then filled with the expanding gases.

What is explosive substance?

An explosive substance is

a solid or liquid substance (or mixture of substances) which is in itself capable by chemical reaction of producing gas at such a temperature and pressure

and at such a speed as to cause damage to the surroundings. … An explosive article is an article containing one or more explosive substances.

What are the 5 requirements for an explosion?

• Combustible Dust.
• Distribution Of Dust Particles.
• Confined Dust Cloud.
• Oxygen.
• Ignition Source.

What do fire investigators begin their search with?

The best point to start an investigation is to

collect the circumstantial evidence of the fire

. Find out where the eyewitnesses’ first saw the fire because it saves a lot of time and conjecture. … They generally start thinking and talking about the cause after getting over the initial shock of the fire.

What is explosion safety?

When a combustible material, an ignition source and atmospheric oxygen collide in a confined space, the result is an explosion. Preventative explosion safety measures aim to

stop this potentially lethal mixture from occurring

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How can we prevent electrical explosions?

1. Never touch anything electrical with wet hands or while standing in water. …
2. Don’t use frayed or broken cords or plug in anything with a missing prong.
3. Cover unused outlets. …
4. Don’t overload sockets. …
5. When unplugging, don’t yank! Pull by the plug, not the cord.

Who invented nuclear bomb?

J. Robert Oppenheimer

(1904-1967) was an American theoretical physicist. During the Manhattan Project, Oppenheimer was director of the Los Alamos Laboratory and responsible for the research and design of an atomic bomb. He is often known as the “father of the atomic bomb.”

Are bombs nuclear?

Atom or atomic bombs are

nuclear weapons

. Their energy comes from reactions that take place in the nuclei of their atoms. During World War Two, “atomic bomb” usually meant a bomb that relies on fission, or the splitting of heavy nuclei into smaller units, releasing energy.

When there is fire what is your first step?

Immediately pull the nearest fire alarm pull station as you exit the building

. When evacuating the building, be sure to feel doors for heat before opening them to be sure there is no fire danger on the other side. If there is smoke in the air, stay low to the ground, especially your head, to reduce inhalation exposure.

How explosive is a nuclear bomb?

Nuclear bombs have had yields between

10 tons TNT

(the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing little more than 2,400 pounds (1,100 kg) can release energy equal to more than 1.2 million tons of TNT (5.0 PJ).

What is the first step you should take when you respond to a fire emergency?

• RESCUE. Rescue any people in immediate danger (only if it safe to do so).
• ALARM. Raise the alarm. …
• CONTAIN. If practicable, close all doors and windows to contain the fire (only if it safe to do so).
• EXTINGUISH.

What is the first step of the fire response?

General fire response procedures must be implemented immediately upon suspicion of a fire. Remove patients and personnel from the immediate fire area if safe to do so.

Activate Alarm and notify others

. Activate nearest audible fire alarm by pulling the handle down on alarm.

Who should you evacuate first in the event of a fire?

Patients in immediate danger should be moved first. They should follow

a lead nurse

into a safe area. Move patients who are closest to danger first (non-ambulatory and ambulatory).

How do you evacuate a hotel?

Recall all

elevators to

ground floor. Activate evacuation annunciator/alarm. Make evacuation announcement on hotel public address system. Release E-Key (emergency key) from vault to hotel security or fire/police chief at scene.

How do hotels handle fire situations?

Leave your room and close the door behind you

to keep smoke and flames out of the corridor. Sound the alarm. Leave the building by the nearest exit. DO NOT USE ELEVATORS.

What should we do before fire?

1. Install smoke alarms on every level of your residence and do proper maintainece.
2. Review escape routes with your family. …
3. Consider escape ladders if your residence has more than one level.
4. Never use flammable liquids indoors.
5. Never smoke near flammable liquids.

What is needed to start a fire?

Oxygen, heat, and fuel

are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.

What does TNT stand for?

trinitrotoluene

(TNT), a pale yellow, solid organic nitrogen compound used chiefly as an explosive, prepared by stepwise nitration of toluene.

What is called explosion?

An explosion is

a rapid expansion in volume associated with an extremely vigorous outward release of energy

, usually with the generation of high temperatures and release of high-pressure gases. Supersonic explosions created by high explosives are known as detonations and travel through shock waves.

How do sparks start an explosion?

The explosion is set off by an electrostatic spark. When the mixture ignites, the

rapid increase in temperature brings

about a huge increase in gas pressure. If the burning vapour were to be confined the resulting rise in pressure could destroy the chamber with a loud explosion.

What should you do before during and after a house fire?

Gather and clear items around the house that are potentially flammable, including: dead vegetation, leaves and debris; ✔

Store flammable or combustible materials in safety containers away from the home

; ✔ Move your BBQ propane tank away from the house; and, ✔ Build any future repairs out of fire-resistant materials.

When were explosives first used?

In

1846

Italian chemist Ascanio Sobrero (1812-1888) invented the first modern explosive, nitroglycerin, by treating glycerin with nitric and sulfuric acids. Sobrero’s discovery was, unfortunately for many early users, too unstable to be used safely.

What are some basic elements of an explosive train?

Explosive Train – the steps in which the explosives are aligned to initiate a munition or explosive device;·

such as a prime’r, detonator, booster, and main charge

. Also called a firing train.

How are explosives made?

A chemical explosive may consist of either a

chemically pure compound

, such as nitroglycerin, or a mixture of a fuel and an oxidizer, such as black powder or grain dust and air.

What are steps in tracing the origin of the fire in the fire scene and searching for evidence?

Identify a distinct origin (location where the fire started) and an obvious fire cause (ignition source, first fuel ignited, and circumstances of the event that brought the two together)

. Conduct a scene examination in accordance with NFPA 921 and other guidelines. Seek someone with the expertise required.

How do you find the origin of fire?

In order to find the starting point, investigators will start at the outskirts of this V- or U-shape and work inward. Clues to figuring out where that origin is beginning with determining the most blackened parts of a tree.

The side of a tree with the most damage is probably facing the starting point of the blaze

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What step in the investigative process would scene documentation fall into?

The steps listed are:

arriving at the scene

, evaluating the scene, documenting the scene, processing evidence at the scene, and finally completing the investigation (National Institute of Justice 2009).

What are the elements of explosion?

Fires and explosions require three elements in order to occur (the ‘fire triangle’):

oxygen, fuel and heat

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How do you handle explosive substances?

Keep explosive chemicals away from all ignition sources such as open flames, hot surfaces, spark sources, and direct sunlight. Consider designating a

special area for

explosive chemical use. Store explosive chemicals in an explosive magazine, and inspect areas weekly to comply with the California Fire Code.

What is Indian explosive Act?

An

Act to regulate the manufacture, possession, use, sale,transport, import and export of explosives

. … Power to make rules as to licensing of the manufacture, possession, use, sale, transport and importation of explosives.

What 3 elements do you need to create a dust explosion?

The elements are

a fuel source (combustible dust), heat or ignition source (electrostatic discharge, glowing ember, hot surface) and an oxidizing agent (oxygen in the air)

. Two additional elements, if present, create the optimal conditions for a combustible dust explosion to occur.

What is needed to create a dust explosion?

1. The dust must be combustible and release enough heat when it burns to sustain the fire.
2. The dust must be capable of being suspended in air.
3. The dust must have a particle size capable of spreading the flame.

What is an explosion protection document?

An EPD is an explosion protection document which

contains the findings of a risk assessment of any work activity involving flammable/or explosive atmospheres

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