Service Delivery 2

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Service Delivery 2

• Trench Collapse

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Aim

• To introduce students to the difficulties faced
  at a trench collapse incident.

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Learning OutcomesAt the end of the
session students will be able to

• State the influences which effect an excavated
  face
• Identify the types of equipment likely to be
  required for a trench collapse incident
• Understand the operational considerations.

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Influences on an excavated face

• Depth of excavation
• Loading at ground level
• Weather and climatic conditions
• Vibration from nearby heavy plant
• Insufficient piling and bracing.

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Operational considerations

• Firefighters must be aware of the dangers of
  further collapse
• Consider how to clear the trench without causing
  further collapse
• What specialist equipment is available
• What specialist advice is available.

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Specialist equipment

• Sheer-legs and timber for shoring

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Specialist equipment

• Sheer-legs and timber for shoring
• Lifting equipment

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Specialist equipment

• Sheer-legs and timber for shoring
• Lifting equipment
• Lighting

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Specialist equipment

• Sheer-legs and timber for shoring
• Lifting equipment
• Lighting
• Special stretcher.

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Type of stretcher likely to used at a trench
collapse incident.
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Specialist equipment

• Sheer-legs and timber for shoring
• Lifting equipment
• Lighting
• Special stretcher
• Thermal imaging camera.

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Operational difficulties

• The conditions within the trench will be cramped,
  dirty, dangerous and very changeable.

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(No Transcript)
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Operational difficulties

• The conditions within the trench will be cramped,
  dirty, dangerous and very changeable
• Casualty care will be very important, victim
  maybe suffering major injuries
• Rescue work will be slow and arduous.

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Points to be considered

• Keep all people at a safe distance
• Keep the number of personnel in the trench to a
  minimum
• Maintain good access and egress.

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Communications

• It is vital that clear communications are
  established and maintained
• Consider the possibility of a flammable
  atmosphere, and use intrinsically safe equipment
• Establish a clear and concise evacuation signal.

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Confirmation Assessments
will be based on this lesson and the
corresponding study note

• Learning Outcomes
• State the influences which effect an excavated
  face
• Identify the types of equipment likely to be
  required for a trench collapse incident
• Understand the operational considerations.

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THE END