HRCT Revision 2

Which of the following shall be consumed by SCDF responders to protect themselves against radiation effects before responding to an incident involving a nuclear-powered submarine?

• Sodium iodide tablets

• Potassium iodide tablets

• Caesium iodide tablets

• Manganese sulphate tablets

In the event of a "white powder" incident, how many Aseptojet units are required to optimally decontaminate a room measuring 2.5m by 15m by 10m?

• 3

• 4

• 5

• 6

During a suspected chemical agent incident, which of the following events help to confirm the incident so that the Ops Centre can activate the 2nd tier of response?

• No sign of casualty but AP4C detects positive readings

• 10 casualties fainted but no readings on detectors

• Both AP4C and LCD3.3 detect positive readings

• 2 casualties, with some readings on the Intensimeter

Which of the following scenarios can be a hazard to the responder when a CNG car is on fire?

• The fire will cause natural gas leak in open spaces. This will displace oxygen in the atmosphere and suffocate responders unless breathing apparatus is worn.

• The fire will cause a leak from the highly-pressurized CNG fuel system, which could then produce a high-velocity cold gas jet. This is cryogenic and can freeze anything upon contact.

• When impinged in a fire, the internal pressure in the cylinder may go beyond the pressure limit. When there is no way to vent the pressurized gas to the atmosphere, the cylinder may rupture violently.

• The fire will cause natural gas leak, which is both toxic and cancer-causing. Breathing apparatus set has to be worn.

How many UN classifications of dangerous goods are there?

• 5

• 7

• 8

• 9

Which of the following statements regarding the AP4C is true?

• The CH detection channel indicates the presence of explosives.

• The CH detection channel indicates that there are vapours that are flammable.

• The CH detection channel indicates the presence of flammable solids.

• The CH detection channel indicates the presence of toxic substances.

Which of these chemicals can the LCD3.3 detect?

• Anthrax and Botulinum

• Chlorine and Phosgene

• Nitrates

• All of the above

What is the proper set up procedure of the Intensimeter?

• Switch on the X50DE; attach to the Telescope Probe; remove rubber cap; ready for use.

• Switch on the X50DE; attach to the Telescope Probe; wait for self-test; X50DE automatically enters into dose mode; ready for use.

• Attach the X50DE to the Telescope Probe; switch on the X50DE; wait for self-test; X50DE automatically enters into dose rate measurement mode; ready for use.

• Attach the X50DE to the Telescope Probe; switch on the X50DE; wait for self-test; press the Toggle Button until dose rate measurement mode; ready for use.

Which of the following is NOT a hazard of flammable gas?

• Projectile

• BLEVE

• Frost Bite

• Skin Irritation

Which of the following is NOT an emergency actions for handling corrosives?

• Time-Distance-Shielding

• Isolation of spill

• Use foam for vapor suppression

• Use water for vapor dispersion