1.Q. Does a higher flash point mean that a liquid is more flammable?
A.No - Less flammable. 2.Q. What particular danger exists when flammable liquids or gases which are
heavier than air are spilled?
A.The vapours may travel along the ground until they reach a source of
ignition, or may collect in cellars etc. and accumulate to cause an explosion
at a later stage.
3.Q. Why earth metal equipment when dealing with flammable liquids?
A.To reduce the risk of a build up of static electricity which may cause a spark.
4.Q. How would you contain leaks from large tanks containing flammable
liquids?
A.Surround them with a containment wall or bund.
5.Q. Do some moving liquids generate static electricity?
A.Yes - This can be a problem with flammable liquids.
6.Q. What type of devise should you use to measure flammable vapours in an
area prior to allowing work to commence in it?
A.An Explosimeter or Flammable Gas Detector.
7.Q. How would you dispose of flammable liquid waste?
A.Store carefully until you can either incinerate them or have them
incinerated at a suitable site.
Q. If your overalls become soaked with flammable solvent, what action should
you take?
A.Remove them at once.
9.Q. How should vessels, bins, tanks, and rooms used for storing flammable
liquids be marked?
A."Highly flammable liquid".
10. Q. What name is given to a suspension of a liquid in a gas?
A.Aerosol.
11. Q. Do some moving dusts generate static electricity?
A.Yes - This can be a problem with flammable dusts.
12. Q. Name four essential safety precautions which should be taken when
handling flammable solvents?
A.1. No smoking or naked lights.
2. Wear appropriate protective clothing.
3. Avoid spillage.
4. Use proper pouring aids.
5. Earth the container and pourer to avoid static.
13. Q. Name four precautions which should be exercised when storing flammable
solvents?
A.1. Fire proof building.
2. Flameproof electrical fittings.
3. Means of escape.
4. Fire appliances.
5. Warning notices.
6. Earth the container and pourer to avoid static.
14. Q. Name two ways of overcoming the generation of static electricity in
flammable liquid lines?
A.1. Earth supply lines.
2. Use Anti-static hose.
3. Reduce flow rates.
15. Q. What are the two main methods of removing flammable material residues
from drums or small tanks to be repaired?
A.1. Steaming out with live steam.
2. Boiling in water containing an alkali or detergent.
16. Q. What other two things must you have when storing flammable liquids other
than a fire-proof building, flameproof electrical fittings, and warning
notices?
A.1. Fire Appliances.
2. Means of escape.
17. Q. Name four intrinsic factors on which the fire risk of a flammable liquid
depend?
A.1. Tendency to vaporise (volatility).
2. Flash Point.
3. Density (Lighter or Heavier than Air).
4. Ignition Temperature.
18. Q. What is the maximum quantity of flammable liquid which may be kept in a
laboratory, and under what condition may this liquid be kept in the
laboratory?
A.1. Minimum practicable in relation to daily needs.
2. It should be kept in a closed vessel or container, in a fireproof cupboard.
19. Q. Describe what is meant by the following?
(a)Flashpoint.
(b)Auto Ignition Temperature.
(c) Flammability Limits.
A.(a) Temperature at which a liquid gives off sufficient flammable vapour to form an ignitable mixture near its surface.
(b) Lowest temperature at which a substance will ignite spontaneously.
(c) The upper and lower concentrations within which a vapour will form a Ignitable mixture with air.
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