Ba

Front 1

12 rules of BA

Back 1

1. Shave.
2. Need ADSU, personal line and lamp.
3. Do not wear if contents are less than 80%.
4. Worn on instruction of OIC.
5. No fewer than 2 wearers, more in exceptional circumstances.
6. Never work alone.
7. Team leader nominated on rank of experience.
8. Don in safe air.
9. Hand tally to ECO.
10. Regular gauge checks.
11. When ADSU sounds, if air allows, investigate. Takes precedence.
12. Indicate assistance is required by a long slow clap.

Front 2

4 Duties of a BA wearer.

Back 2

1. Routine test, fill in tally and check contents.
2. Record routine test in OPS/5.
3. Report any defects to OiC.
4. Check that it has been worn and tested as required within previous 30 days.

Front 3

10 duties of stage 1 ECO.

Back 3

• Provide board, marker and wear tabard.
• Take up position nominated by OiC.
• Indicate stage and location of board.
• Receive tallies, check name and contents.
• Enter ‘Time in’.
• Put tallies in slots and bracket teams.
• Calculate ‘Time of Whistle’ and fill in ‘Location’.
• Brief teams.
• Keep OiC updated.
• Check comms.
• Inform OiC of prolonged breakdowns in comms.
• Be aware of cross-border ADSU signals.
• Chemical suit wear times may be limited.
• Designate guidelines, affix tallies and check knots.
• Check and record dosimeter readings.
• Return tallies to wearers.
• Have emergency crews standing by.

Front 4

Things to consider when siting and ECP.

Back 4

• Size of risk area.
• Location of access points.
• Number of floors involved.
• Wind direction.
• Physical limitations of the site.
• The likely development of the incident.
• In safe air.
• Easily located.
• Close to the scene of operations.
• OiC should be aware of all ECPs.

Front 5

6 reasons to move to stage 2.

Back 5

• Protracted.
• More than 2 entry control points.
• More than 10 BA wearers.
• Branch guidelines are used.
• Full decontamination.
• Radiation incident.

Front 6

How many entry control points are permitted under stage 2 entry control.

Back 6

A

Front 7

Max number of guidelines from one ECP.

Back 7

2

Front 8

4 circumstances to commit an emergency team.

Back 8

• A team fails to return by time of whistle.
• Comms fail.
• ADSU is reported.
• When a dangerous situation is developing or a wearer is in distress.

Front 9

What would emergency team take in.

Back 9

• Where practically possible at stage 1.
• Always at stage 2.
• Same size as crews committed.
• Same air as crews committed.
• EASE pack and any equipment the original team took

Front 10

When would you sound your ADSU.

Back 10

• Risk to life.
• Trapped.
• Lost.
• Injury.
• Malfunction to set.

Front 11

Actions to take when hearing an ADSU.

Back 11

• Check gauge.
• Send message to ECO.
• Investigate.
• Maintain safe egress.

Front 12

Full working duration and safety margin.

Back 12

Full: The time from the moment it is started up until the cylinder is exhausted (45 mins).

Working: The time from the set being started up until the low pressure warning whistle is reached (35 mins).

Safety margin: The time from the moment the whistle starts until the cylinder is exhausted (10 mins).

Front 13

Define Rapid Deployment.

Back 13

Rapid Deployment is to apply minimum safety control procedure where the crew members available are limited and where persons at great risk require very urgent assistance or where dangerous escalation of the incident can be prevented.
• Only two wearers.
• Rescue – can see persons of are a very short distance from point of entry.
• When dangerous escalation can be prevented.
• Stage one/two as soon as possible.

Front 14

State the purpose of a guideline.

Back 14

Guidelines are to enable a team of BA wearers in a risk to retrace their steps to the entry point and enable subsequent teams to readily locate them or the scene of operations.

Front 15

Explain Re-entry/ New entry/ Same wear.

Back 15

New Entry – Cylinder is changed – new records.

Re-Entry – Seal is broken, wearer can re-enter with more than 100 bar to do a specific task – new records.

Same wear – Seal is not broken, you can re-enter with more than 100 bar to do a specific task – no new records needed.

Front 16

Define Bridgehead.

Back 16

Bridgeheads are to provide central and advanced control points for occasions where it is necessary for BA to be started up a distance from the original point of entry to a risk area whilst remaining in safe air.

Front 17

Define Combustion.

Back 17

Combustion is an exothermic reaction which results in heat and light.

Front 18

Define Pyrolises.

Back 18

Pyrolisis is the decomposition of a substance by heat.

Front 19

Define Flashover and state signs and symptoms.

Back 19

Flashover is a sudden and sustained transition from a growing fire to a fully developed fire.

• Ventilated compartment.
• Pyrolisation.
• Flames visible in gas layer.
• Extreme thermal radiation from above.
• Increased turbulence in neutral plane.
• Sudden increase in heat.

Front 20

Define Backdraft and state signs and symtptoms.

Back 20

Backdraft is the deflagration resulting from air mixing with the unburnt products of combustion from an oxygen starved fire.

• Limited or no ventilation.
• Smoke pulsing.
• Windows blackened/stained.
• No obvious signs of flames.
• Low neutral plane.
• Inrush of air when compartment is opened (whistling).
• Darkening of fire gases.