M93 - Chapter 3

Question 1

What is a dust explosion?

Answer 1

Particles of dust produced as by products can build up and cause an explosion, or give of gas.

Question 2

What is a secondary dust explosion?

Answer 2

Occurs when an initial explosion or other issue causes a second dust cloud that then ignites.

Question 3

To avoid dust explosions?

Answer 3

Enclose dust producing machinery

Use mechanical or pneumatic dust collectors

Injection if inert gas into the process (dilutes the dust)

Remove foreign matter with separators.

Question 4

To reduce impact of a dust explosion?

Answer 4

Explosion venting - Allows the explosion to escape

Explosion suppression - a pressure sensitive system that applies treatment to the explosion (like a fire extinguisher)

Question 5

How many people for a legal riot?

Answer 5

12+

Question 6

What is the re-insurance act for Terrorism called?

Answer 6

Re-insurance (Acts of Terrorism) Act 1993.

Question 7

To reduce terrorism risk?

Answer 7

Be vigilant 
Responsibility - Check up on your bomb making tenants
Tidiness - Secure cabinets etc
Control of entry to buildings
Visitor controls
End of day search of premises 
CCTV
A co-ordinator to make all this happen.

Question 8

Why do dusts from cereal burn more readily than other protein based dusts.

Answer 8

Protein dusts have more nitrogen

Question 9

What’s the worst soil for subsidence

Answer 9

Clay

Question 10

ACT of terrorism if defined as?

Answer 10

directed towards the overthrow or influence, by force or violence, of the UK or any other government.

Question 11

Why is Aircraft peril given freely?

Answer 11

Due to the very low and infrequent risk factors

Question 12

If damage is not caused by riot, what peril is it covered under?

Answer 12

Malicious damage

Question 13

Good practice for spray booth operators

Answer 13

Clean hoses, ducts, filters and fans daily/weekly depending on usage

Fans to run 10 minutes after use

One day supply of flammable liquids in booth or vicinity

Stoppers or lids on flammable liquid bottles

Question 14

Good practice for gas cannister storage and welders

Answer 14

Hoses, Valves and torches in good order

Careful handling of cannisters

Separate full from empty

Finish off part used, and store with empties

Rotate so that a cylinder is not left unused for a long period

Remove empties regularly

Question 15

Difference between subs and heave?

Answer 15

Subs - Ground shrinks
Heaves - Ground expands

In both cases the movement causes issues across the foundations resulting in cracks/damage to the building.

Question 16

What is landslip

Answer 16

A small landslide, the ground moves down sharply under the influence of gravity.

Coastal areas exposed, Insurers will use local information to assess risk.