WorksheetsHRCT Revision 2
Total questions: 20
Worksheet time: 40mins
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
Which of the following safety precautions should a responder observe when responding to a CNG fire?
Avoid cutting into the pressurized tank and fuel lines.
Try to remove the fuel tank and fuel line from the vehicle to a safe location.
Stay clear from the pressure relieg vents - a loud hissing sound indicates venting of excess pressure. Attempt to locate the source and divert the vents from discharging gas.
Sudden gas release may cause frosting. Do not touch frosted areas without proper protective gear.
You are now responding to a HazMat incident. Along the way, you are informed that the UN ID numbee of the substance involved is "2387". Using the DOT Emergency Response Guidebook given to you, what can you tell about this chemical?
It is a flammable liquid that is non-polar, noxious and water-immiscible.
It is a spontaneously combustible susbtance.
It is a water-reactive oxidizer.
It is a radioactive material.
In liquid sample collection using the AP4C, an area of ________ is to be covered using the S4PE scrapers.
20cm x 10cm
10cm x 1cm
10cm x 10cm
20cm x 20cm
What does the GHS pictogram represent?
Explosive
Radioactive
Oxidizer
Corrosive
Which of the following is NOT an emergency actions for handling corrosives.
Spray water directly at the spill.
Isolation of spill.
Use foam for vapor suppression.
Use water for vapor dispersion.
When taking background measurement at the Decon Point, what is the minimum distance the FH40 monitor should be away from any contaminated object or person?
50cm
100cm
150cm
200cm
Which of the following type of radiation has the greatest penetrating power?
Alpha
Beta
Gamma
Neutron
In NFPA 704, what does this image means?
Corrosive material
Avoid use of water
Harmful waste
Flammable material
A container labelled with a Hazard Class 3 indicated that it is a ________ product.
Flammable Gas
Flammable/Combustible Liquid
Flammable Solid
Oxidizer
What does IDLH stands for?
Immediate danger to life and health
Immediately dangerous to life or health
Immediate dangerous to life and health
Immediately danger to life or health
