1.2 Flashcards
what dos a 60s steady alaram bell mean
ref:
evacuate and report immediately to muster areas
gtw standing orders, part 1 ch 6, sect 1
what does a 60s rising/ falling duration alarm bell mean
ref
only emergency services and command elements to evacuate
gtw so part 1 ch6 sect1
what does a 10s steady duration alarm bell mean
ref
all clear to return to place of work
gtw so part 1 ch 6 sect1
who is responsible for rnzaf being smokefree
directorate of air force health and safety with support of base commanders
define a confined space
ref
nzap 201 ch 11, nzap 6000-1 ch 11, a/s nzs 2865
isnt designed for human occupancy
has a restricted entrance/exit
may contain a hazardous atmosphere
may be capable of engulfment
two major rules about working at height
dont remove the safety harness without medial consent
safety rails should be in place
confined spaces team consists of what
supervisor
safety person
tradesman
oxygen levels in fuel tanks must be in what % for safe entry
19.5-23.5
a hazardous substance is defined as any substance with what?
ref
with 1 or more of the following intrinsic properties
explosiveness
flammability
capacity to oxidase
toxicity
corrosiveness
ecotoxicity with or without bioaccumulation
or which on contact with air or water generates a substance which does
dfo 10 dfo 53, ch 3 nzap 201 ch 2 para 2.24-2.27 nzap 6000-1 ch10 sect 1 10.25-10.33 and sect 3 lts uso & sops
hazardous substances classification and classes
class 1-explosives 2-flammable gasses 3-flammable liquids 4-flammable solids 5-oxidizers 6-toxics 7-radiation 8-corrosives 9-ecotoxics
msds ref
dfo 53 ch3 sect 4
is chem watch the primary sds?
no. manufacturer or supplier is
msds contains
hazardous substance common name "" properties usage storage transportation disposal treatment (medical)
storage and handling of hazardous substances can be found where
dfo 53 ch 3 sect 1 para 3.5
hazardous substance storage and handling precautions
ref
quantities held should be minimized to usable level
haz subs no longer used to be disposed of responsibly
all pers that use haz subs should have completed d61801 nzdf haz sub awareness course
all units to have an approved handler avaliable at all times who has completed d61802 nzdf haz subs handler class 2-9
dfo 53 ch 3 sect 1 para 3.5
corrosive material may be stored provided
packages prevent spills by fall
safety shower/station/facilities sited no further than 10m, no nearer than 2m
walls,floors, ceilings lined with corrosion resistant material
all decanting areas have secondary container to catch spillage
the area has adequate secondary containment in place to capture the greater of 25% of the max aggregate quantity present OR the capacity of the largest container present
precautions when decanting haz subs
avoid where possible
containers being decanted must have
- common name
- hazard markings
decanting new containers must have
- approved type for that haz sub
- packaging must withold contents if dropped
containment precautions when working with haz subs
clearly marked
- name
- hazardous properties
stored correctly
precautions(storm drain)
dust vapours not allowed to accumulate
types of disposal for haz subs rugs and non haz subs rags
ref
non haz rags- wheelie bins
haz rags- metal bin- sealed plastic bags-bulk disposal in oil store
iaw bso, management of haz subs orders
types of absorbent granules
oil dri
sokorol
enretech-1
types of spills
major
not successfully contained
adversely effects the environment/people
minor
successfully contained
does not adversely effect the environment/people
what happens after the event of a spill
an srs is filed regardless of size
where is the hsmsk located
wherever the risk is the greatest
what is inside a hsmsk
drain mat cover absorbent barrier absorbent pads sand/vermiculite protective clothing instructions
inital actions on finding a haz spill
notify emergency services
assessment 1- fire, immediate threat
assessment 2- restrict discharge to reduce the hazard
assessment 3- base firemaster to establish the type of materials that caused the fire
hazardous atmosphere zones ref
nzap 6000-1 ch10.43, nzap 6003-1 leaflet a20,
dfo 53 ch3 sect 9
lts uso and sops
types of haz atmosphere zones
non haz
-fuell parked ac in flyable condition
non haz
-defuelled drained and vented tank
hazardous class 1 zone 2 ac with fuel system being maintained. 1.5m
management of ac haz atmosphere zones
barricades
placards
dummy plug
stateboard
approved electrical equipment for haz ac atmosphere zones
hazardous class 1 zone 2 areas
special protection (ex)
non sparking (ex n)
no other electrical equipment around ac
when location is left unattended, all electrical equipment to be disconnected from power and removed from area
human factors- 4 things that effect and reference for that
nzap 60001 ch 5
time continuously awake
time of day
fatigue prior to duty
sleep debt
identification of fatigue and ref
nzap 6000-1 ch 5
lack of situational awareness lack of judgement distractions complacency clumsiness irritable
When do you ask for close supervision
Specifically called for in the maintenance instructions
Supervisor considers it necessary
Tradesman requests it
Tradesman isnt qualified
Oxygen levels within the tank must be in what range for safe entry (confined spaces fuel tank entry)
19.5-23.5
When working in a wet tank, what additional safety ppe do you need
Positive pressure air fed masks
Has subs must be separated from WHAT in order to minimise the probability of an accident.
What else is this minimising
Potential ignition sources
Areas of high/low intensity land use
Incompatible substances at other locations
Minimises the adverse effects in the event of an accident during storage and use
Hazard categories and actions
1- organic
2-chemicals
3- fuels oils
4- petrol
What’s a haz
Hazardous atmosphere zone
An area where flammable gases or vapours are or may be present in the area in sufficient quantities to produce an explosive gas atmosphere
Types of haz zones
Non haz
Fuelled parked Ac in flyable condition
Non haz
Refuelled drained and vented tank
Haz class 1 zone 2 Ac with fuel sys being maintained
An area may be considered non haz oncethe vapour concentration ..
Is less than 5% of the lel when measured with a calibrated vapour meter
Management of a open fuel system is as follows
Barricades
Placards
Apply no power placards around cordon
Open fuel tanks, apply no power on state board
Approved electrical equipment for use in haz class 1 zone 2 areas
Special protection - Ex s
Non sparking- Ex n
When working in a haz zone one class two area and you need to leave, what do you do
If the location is completely unattended all electrical equipment is the haz is to be disconnected from the power supply or removed from the area
What are the timings for rest periods and the limitations
10 hours to ensure 8 hours sleep
No alcohol to be consumed preceedingthe start of the next rostered duty
Aimed at managing the effects of cumulative fatigue
