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Warry’s ACT F&R Study > HAZMAT > Flashcards

HAZMAT Flashcards

(48 cards)

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1
Q

List examples of hazardous atmosphere?

A
  • Oxygen Enriched
  • Oxygen Deficient
  • Toxic or Corrosive
  • High Temperatures
  • Radioactive
  • Flammable Environments
  • Particulates
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2
Q

Explain and list examples of gases?

A

Gases are too volatile to exist as a liquid or a solid at typical temperatures pressures.

Examples are Hydrogen, Methane and Propane.

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3
Q

Explain flammability range?

A

Flammability range is the concentration range of a gas or vapour that will burn or explode if an ignition source is presented

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4
Q

What is LEL?

A

Lower Explosive Limit is the lowest concentration of gas or vapour in the air that will burn with an ignition source

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5
Q

What is UEL?

A

Upper Explosive Limit is the highest concentration of fuel vapour in the air that will ignite with an ignition source

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6
Q

Units of measurement and what do they measure?

A

V/V% - measures oxygen
PPM - Measures Toxicity
% LEL - Measuring flammability

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7
Q

What is TWA?

A

Time Weighted Average.

An average concentration value for a substance, worker may be exposed to, 8 hrs, 5 days a week

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8
Q

What is STEL?

A

Short Term Exposure Limit.

Workers can be exposed to for up to 15min, 4 times per day is 1hr break without having IRREVERSABLE TISSUE DAMAMGE or NARCOSIS

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9
Q

Describe a vapour?

A

Vapours are generally the evaporative product of volatile liquids.

Examples - Acetone, petrol, benzene, styrene and ethanol

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10
Q

Describe aerosol?

A

Aerosol consists of very small solid particles or liquids droplets that are depressed in a gas.

Examples - Flour, coal, plastics or metals dispensed into air

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11
Q

What is PLV?

A

Peak Limit Value.

  • Considered highly hazardous substance and may induce acute toxic effects
  • Concentration of substance, that if exceeded indicates the atmosphere is considered unsafe to work in.
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12
Q

What is IDLH?

A

Immediate Danger to Life and Health.

An atmospheric concentration of any substance that poses an immediate THREAT to life or would cause IRRIVERSABLE or delayed adverse health effects
OR, would interfere with an individual’s ability to ESCAPE from a dangerous atmosphere

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13
Q

7 support agencies that might attend a HAZMAT incident?

A

-ACTAS
-AFP
-SES
-WorkCover
-ActewAGL
Zinfa
Roads ACT
CROIERG
Technical specialist
ICON water
Department of Defence

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14
Q

Define Hazardous Materials?

A

Hazardous substances and dangerous goods. There may be flammable, explosive, toxic, radioactive or infectious substances hazardous to health and safety.

  • add legislation reference - as by legislation
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15
Q

5 locations where HAZMAT could be found?

A

-Transport vehicle
-Chemical plants
-Manufacturing facilities
-Hospitals
-Universities
-Laboratories

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16
Q

4 main hazardous material properties?

A

Toxicity
Flammability
Reactivity
Corrosiveness

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17
Q

4 ways they may enter the body

A

-Inhalation
-Absorption
-Ingestion
-Injection

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18
Q

What is ANZERG and where can it be found ?

A

Australia and New Zealand Initial Emergency Response Guide (ERG)

Found in the Red HAZMAT satchel. Back of SO chair in cab.

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19
Q

What are the Hazardous Materials Identification classes? (9)

A

1) Explosives

2) Gases (Flammable, Non-Flammable, Compressed, Toxic)

3) Flammable Liquids

4) Flammable Solids

5) Oxidising Substances & Organic Peroxides

6) Toxic & Infectious Substances

7) Radioactive Material

8) Corrosive Substances

9) Miscellaneous Dangerous Substances

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20
Q

Define exposure standards?

Study These Flashcards
A

Indicate safe airborne concentrations of individual chemical substances in general occupational environment.

Are safe concentrations to work in

21
Q

Explain Odour threshold?

Study These Flashcards
A

The minimum concertation at which you can smell a substance

22
Q

What is 1% of PPM?

Study These Flashcards
A

10,000

1 over 100 % = 10000 over 1000000 ppm

23
Q

What is the difference between the Bump Test vs Calibration on 4 head detector (MicroRae) ?

Study These Flashcards
A

A bump test is done to ensure that all the monitors are working correctly. It is done on the 1st day shift checks.

A calibration is done if the bump test fails, it will automatically calibrate to test the accuracy of all the readings and monitor. Also, every 6 months as a scheduled service.

24
Q

What is the safe oxygen range?

Study These Flashcards
A

19.5% - 23.5%

25
What are the general precautions for HAZMAT?
1. Control the movement of people 2. Identify materials at a distance 3. Don't guess, make sure information is accurate 4. Wear and use appropriate PPE/PPC 5. Avoid unnecessary exposure
26
What are the 3 control zones?
Hot zone - area of isolation where contaminant levels are considered sufficiently high to threaten life and safety. Only personnel equipped with appropriate PPE & equipment may enter. Warm Zone - zone around the hot zone where decon commences. There may still be a level of threat from contaminant exposure. Cold zone - support zone which is restricted to support agencies, casualty treatment, marshalling and assembly areas.
27
What are the methods of Containment?
- Up-righting and sealing leaking containers - Allowing the leak to continue then handling appropriately - Plugging and patching leaking containers - Closing valves and closing and tightening lids
28
What are the methods of Confinement?*
Diversion: redirecting a hazardous spill by constructing a trench or temporary barrier to divert flow Dyking: containing spread of a hazardous spill by constructing barrier around spill to control flow Retention: temporary confinement of the material until other tactics can be employed. May also be a back-up to diversion or dyking. E.g., covering of storm drains Foam: very effective vapour suppressing agent & extinguishing agent.
29
List the 2 strategies for HAZMAT?
Defensive strategy - involves no direct contact. Safer due to less exposure. Let burn or allow leak to finish. Offensive - involve direct intervention. Aggressive hose line attack, turning off valves or isolating. Minimises damage and has quicker results.
30
What are the 4 levels of Decon?
Level 1 = Emergency Decontamination Level 2 = Emergency Services Decontamination Level 3 = Mass Decontamination Level 4 = Bulk Decontamination Systems
31
What does Level 3 decon involve?
Wet, strip, wash, cover
32
What are the considerations when siting a decontamination zone?
- type of decon to be carried out - weather conditions, particularly wind direction - location of any drains & water courses - topography - comfort & safety of personnel - location of appliances - location of water supplies - proximity to incident - location of entry control point
33
What does IPICDM stand for?
I = Identify Hazard P = Choose correct PPE I = Isolate the area C = Contain the substance D = Decontaminate (persons & equipment) M = Monitoring the incident
34
Condonements of the Decon corridor?
HOT ZONE - Collection crew WARM ZONE - Holding area - Shuffle pit - Cleaners - Kill bucket - Soap bucket - Dam - Shower - Inspection officer COLD ZONE - BA entry/exit - BA control - Entry/exit officer - Decon officer - Safter officer - Disrobing area - Robing area - backup crew x2
35
MicroRAE chat levels?
LEL - Flammable or combustable gases and vapours - % of LEL - Low 5 - High 10 O2 - Oxygen - v/v% - Low 19.5 - High 23.5 CO - Carbon Monoxide - ppm - Low 30 - High 50 H2S - Hydrogen Sulfide - ppm - Low 10 - High 20
36
Define dangerous goods?
Substances that are considered to present a risk to health & safety of the public if not properly controlled during handling, transportation or storage
37
What is flash point in regard to flammable liquid?
The minimum temperature at which sufficient vapour is generated from the liquid, under specific test conditions, to momentarily ‘flash’ if a source of ignition is applied
38
What is WET decon?
Water used to stop the contaminants from aerosoling are evaporating and for washing contaminates off a casualty body provided the contaminant is not reactive to water
39
What is dry decon?
Dry agents are used to neutralise any water reactive contaminants or contaminants that can be readily absorbed by dry agents
40
Wet and dry decon?
Dry first then water used to rinse
41
Considerations for atmosphere reading 13% oxygen?
There is not enough O2 for combustion in the 4 head detector to take place, therefore the unit will not operate correctly.
42
What does it mean in oxygen is over 23.5% *
Oxygen enriched environment
43
2 major legislations for HAZMAT
Emergencies ACT 2004 ACT Hazardous Material and CBRN Sub - Plan (version 2020)
44
What is ACUTE vs CHRONIC toxicity?
Acute = single or repeated exposure to a substance that shows adverse effects after a short time Chronic = Long terms effects of a substance after repeated exposure. Typically, no impairment at the time, but years later
45
What are the naming and numbering conventions? (Hazardous Material Identification)
United Nations number Proper shipping Name Chemical name Chemical abstract service number (CAS)
46
List 8 sections of the Safety Data Sheet?
Section 1: Chemical Product and Company Name Section 2: Hazards identification Section 3: Composition/Information on ingredients Section 4: First Aid Measures Section 5: Firefighting Measures Section 6: Accidental Release measures Section 7: Handling and Storing Section 8: Exposure Control/Personal Protection Section 9: Physical and Chemical Properties Section 10: Chemical Stability and Reactivity Information Section 11: Toxicological Information Section 12: Ecological Information Section 13: Disposal Considerations Section 14: Transportation Information Section 15: Regulatory Information Section 16: Other Information
47
What are the 3 major groupings for airborne contaminates?
- Gases - Vapours - Aerosols
48
What does EIP display mean and what is on it?
Emergency Information Panel Display - Proper shipping number - United Nations number - HAZCHEM code - Emergency contact information - Primary risk class label - company name and specialist advice

Warry’s ACT F&R Study (22 decks)

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