The factors that must be present in combination for a fire to continue to burn are Fuel, Heat and Oxygen.
Isolating or removing any of these factors from the combination will extinguish the fire. There are three basic ways of achieving this.
*Starving: Starving is the method of extinguishing the fire by removing the fuel in the vicinity of fire.
*Smothering: Smothering is the method of extinguishing the fire by removing the oxygen with blanketing fire with foam, sand etc.
*Cooling: Cooling is the process of extinguishing the fire by using water to lower the temperature.
1) What is smothering in extinguishing of fire?
Answer is:
Isolating the fire from the supply of oxygen
Explanation:
Related Safety practice and Hand tools MCQ with Answers
Answer is:
Vibration
Explanation:
Physical hazards under occupational health hazards are
*Noise
*Heat and cold stress
*Vibration
*Radiation (ionising & Non-ionising )
*Illumination etc.,
Answer is:
Pull, Aim, Squeeze, Sweep
Explanation:
The correct sequence of operation to be performed when using the fire extinguisher
The acronym PASS is used to describe these four basic steps
P- Pull
A-Aim
S-Squeeze
S-Sweep
Pull (Pin) - Pull pin at the top of the extinguisher, breaking the seal. When in place, the pin keeps the handle from being pressed and accidentally operating the extinguisher. Immediately test the extinguisher. (Aiming away from the operator) This is to ensure the extinguisher works and also shows the operator how far the stream travels
Aim:- Approach the fire standing at a safe distance. Aim the nozzle or outlet towards the base of the fire.
Squeeze:-Squeeze the handles together to discharge the extinguishing agent inside. To stop discharge, release the handles.
Sweep:-Sweep the nozzle from side to side as you approach the fire, directing the extinguishing agent at the base of the flames. After an A Class fire is extinguished, probe for smouldering hot spots that could reignite the fuel.
Answer is:
Step - 4
Explanation:
5S Technique consists of following concepts
1) Seiri - organize - sort
2) Seiton - orderliness - set in order
3)Seiso - cleanliness - shine
4)Seiketsu - standardize - standardize
5)Shitsuke - discipline - sustain
Seiri - organize - sort - Eliminate whatever is not needed by separating needed tools, parts, and instructions from unneeded materials.
Seiton - orderliness - set in order - Organize whatever remains by neatly arranging and identifying parts and tools for ease of use.
Seiso - cleanliness - shine- Clean the work area by conducting a cleanup campaign.
Seiketsu - standardize - standardize - Schedule regular cleaning and maintenance by conducting seiri, seiton, and seiso daily.
Shitsuke - discipline - sustain - Make 5S a way of life by forming the habit of always following the first four S’s.
