Ba

Question 1

Define Initial Entry?

Answer 1

Withdraws and reports to ECO, NOT removed BA mask and broken seal and asked to go back into risk area for further tasks.

Question 2

Define new entry?

Answer 2

Wearer has withdrawn from the risk area, closed down their set, serviced it. If “fit and well” and rehydrated,then they are asked to carry out another separate BA wear.

Question 3

Define Re-Entry?

Answer 3

Wearers withdraw from the risk area and have removed BA mask and broken seal. Closed down BA set but not changed cylinder. Asked to re enter the risk area if:
-above 150 Bar
-they are fit and well,
-Contents sufficient for the task
- for a limited duration clear defined task
- not involve firefighting.

Question 4

When should stage 1 be implemented?

Answer 4

-BA operations are limited and not complex.
-The incident requires no more the 1 BA ECP
-The incident requires no more then 6 wearers at any one time

Question 5

When should Rapid deployment be implemented?

Answer 5

-stage one implemented asap
-on instruction of the IC following RI
-no more then 2 wearers
-IC may personally adopt role of monitoring wearers

Question 6

When would single wearer procedures be implemented?

Answer 6

-not inside structure
-undertaking low risk activities
-wearers gauge checked and contents recorded
-tally placed on board with details
-wearer can quickly be removed from risk area
-wearer can always be seen by IC or nominated person.

Question 7

When should stage 2 be implemented?

Answer 7

-BA operations are complex and require greater control
-incident requires more then one ecp
-the incident requires more then 6 wearers at any one time

Question 8

Define ventilation?

Answer 8

The removal of heated air,smoke and other airborne contaminants from a structure or other location and their replacement with a supply of cooler clean air.

Question 9

What are the benefits of ventilation?(4)

Answer 9

-Replenish oxygen and reduce carbon monoxide.
-Control temperature and humidity
-Removal of moisture,dust and other contaminants.
-Improved visibility aiding navigation.

Question 10

Describe windward and lee ward?

Answer 10

-Windward is up wind.
-leeward is down wind, could use natural.

Question 11

Actions taken when hearing distress signal?

Answer 11

-Inform ECO
-Gauge check
-Tell ECO your Intentions
-Follow revised brief issued by ECO
-Do not take unnecessary risks

Question 12

Distress signal is audible, what should TL consider?

Answer 12

Is it accidental activation?
Is current task risk critical?

Question 13

Describe entrapped procedure?

Answer 13

-Tell ECO
-Activate DSU
-Relax as much as possible in reclined position
-Breathe calmly/minimise air usage
-Do not purge
-Do not adjust cylinder valve

Question 14

Signs and symptoms of flashover?(7)

Answer 14

-Well ventilated free burning fire
-High Heat
-Ghost flames
-Sudden lowering of smoke layer
-rapidly rising temperatures
-Low level mats pyrolising
-change in fire conditions

Question 15

How should a BA team tackle a flashover?

Answer 15

Combine direct firefighting and gas cooling to control conditions,self protection, compartment entry’s and firefighting.
Stay ,advance ,withdraw?

Question 16

effects of compartment firefighting?

Answer 16

-restricts ability to regulate body temp
- manual handling increase in temps and fluid loss
- ability to make critical desicions is compromised

Question 17

Signs and symptoms of backdraught?(8)

Answer 17

-limited ventilation
-hot doors and windows
-Smoke pulsating around openings
-soot blackened windows
-air being drawn back into openings
-ghosting flames over head
-Lack of visible flame
-Change in fire conditions

Question 18

How and why would you set up a BA welfare area?

Answer 18

-In clean air
-under covered structure
-Benches/tables
-Cooling assistance
-thermal blankets
-Lighting
-First aid
-Defib
-Dry clothes
-Water/drinks
-Toilets
-: near command support. Important to meet required recovery periods before redeployment.

Question 19

BA rest periods?

Answer 19

<35= 30 mins 500ml
>35=60 mins 1000ml

Question 20

Requirements of an emergency team?

Answer 20

-at least equal size to the largest commuted BA team.
-Minimum of 2 Wearers
- Must have suitable equipment for the emergency (EASE)
-equivalent cap and duration cylinders.

Question 21

Emergency team call sign and considerations?

Answer 21

Call sign should replicate the ECP they were deployed from. E.G emergency team Alpha 1.
Considerations to numbers in the distressed team, distance from ecp etc

Question 22

Correct use of EASE?

Answer 22

-Gauge check of all members
-Inform ECO of exact location
-Identify member that requires assistance.
-silence ADSU.
-Check casualties cylinder and assess.
-connect EASE if required.
-Purge system
-Original cylinder may now be turned off.
-place carry jangle over casualties head.
-Remove from risk area.

Question 23

Effects of raised body temperature?

Answer 23

Normal is 37
-anxiety/confusion/over estimating capabilities
-Fatigue
-Increased blood flow
-Increased sweat-dehydration
-if blood cannot be cooked the body’s and brain temps increase to critical levels.