Exam 3 Flashcards
(21 cards)
DANGER
Do not enter smoke, gas or vapour clouds
Approach carefully from upwind and uphill
No closer than 70 m
Gather information by observation from a safe distance
Examine more closely, only if necessary and using SCBA and full (Level A) PPC/ PPE.
Respond according to the information gathered
Four essential questions
What is it?
How can it affect me
How do i protect myself?
How do we deal with it?
Two means of confinement
Damming
Diversion
CONTROL is the action taken to render material harmless
◼ Vapour Suppression
◼ Ventilation
◼ Absorption
◼ Neutralisation
◼ Dilution
Means of controlling leaks include:
◼ Dispersion
◼ Ventilation
◼ Flare off
Examples of neutralising materials include:
◼ Soda ash neutralises acids
◼ Hydrated lime neutralises acids/pesticides
◼ Bleach neutralises organics/pesticides
◼ Citric acid neutralises alkalis
5 Step approach to HAZMAT incident
- Initial considerations
- Cold Zone Reconnaissance
- Hot Zone Reconnaissance
- Mitigation (usually in Hot Zone)
- Handover (to site management)
TWA
Time Waited Average
Safe for 8 hours a day, 5 days a week
STEL
Short Term Exposure Limit
Up to 15 Minutes
PLV
Peak Limitation Value
If exceeded, indicates the atmosphere is considered occupationally unacceptable.
Decon types
Emergency decon
Mass decon
Hazardous substance definition
Substances are classified as ‘Hazardous Substances’ by the manufacturer or importer, in accordance with the Safe Work Australia ‘Approved Criteria for Classifying Hazardous Substances’.
Information source in order of hierachy
- DANGER
- HazChem Emergency Action Code (EAC) 3. Emergency Response Guidebook (ANZERG)
- Hazmat Action Guide (HAG sheet)
- Safety Data Sheets and Atmospheric Monitoring
- Technical specialists
Setting Hot zone boundary
Setting Cold zone boundary
Details of HAZCHAM Card
Air ratios oxy/nitrogen, safe/unsafe
Anaphylaxis signs
R espiratory distress (shortness of breath, wheeze, cough)
A bdominal symptoms (nausea, vomiting, diarrhoea, Abdo pain/cramps)
S kin/mucosal symptoms (hives, welts, itch, flushing, facial swelling)
H ypotension (low blood pressure, identified by an altered conscious state)
Types of seizures
Epilepsy
Febrile conditions in children
Brain/head injury
ACS - altered conscious state
CAUSES
Alcohol/drug intoxication
◼ Epilepsy (post ictal)
◼ Infection
◼ Overdose or lack of oxygen (hypoxia)
◼ Underdose (of medication or drug/alcohol withdrawal)
◼ Trauma to the head
◼ Insulin (diabetic) or other metabolic problem
◼ Pain or psychiatric condition
◼ Stroke
APPEARENCE
Lethargic and drowsy
Stumbling
Incomprehensible
Aggressive and combative.
Asthma
4x4x4
1 ventolin into chamber, 4 breaths repeated 4 times
