Maryland Trench Rescue Technician
Certification Exam Practice Questions
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1. Which standard forms the primary basis for the certification
requirements of trench rescue technician-level personnel in many
jurisdictions, including Maryland?
A. NFPA 1500, Fire Department Safety and Health Program
B. NFPA 1001, Fire Fighter Professional Qualifications
C. NFPA 1006, Standard for Technical Rescue Personnel Professional
Qualifications
D. NFPA 1006, Standard for Technical Rescue Personnel Professional
Qualifications
NFPA 1006 defines the job performance requirements for technical
rescue disciplines, including trench rescue technician-level
competencies, and is widely adopted as the certification standard.
,2. A trench rescue technician is responding to a collapse incident. What is
the primary purpose of the initial size-up?
A. Immediately begin victim extrication without delay
B. Establish definitive shoring plans before arrival
C. Identify only the number of responders required
D. Determine scope, hazards, victims, and resource needs
Size-up is intended to gather critical incident information such as
hazards, victim status, and resource requirements to guide safe and
effective operations.
3. Which soil condition presents the highest risk for sudden trench wall
collapse?
A. Well-compacted gravel
B. Dry clay with stable moisture content
C. Rocky soil with minimal loose material
D. Previously disturbed or saturated soil
Disturbed or saturated soils lose cohesion and stability, significantly
increasing the likelihood of sudden trench wall failure.
4. What is the most effective immediate control measure for preventing
additional collapse near a trench edge?
A. Increasing victim movement to speed extraction
B. Placing equipment closer to the trench edge for access
C. Removing all shoring to reduce load
D. Keeping spoil piles and heavy loads away from the trench lip
Relocating loads and spoil piles away from the trench edge reduces
surcharge weight and helps prevent secondary collapse.
5. Which atmospheric hazard is most likely in a trench environment?
A. Elevated oxygen enrichment
B. Reduced humidity only
C. Stable atmospheric conditions
, D. Oxygen deficiency or toxic gas accumulation
Trenches can trap heavier-than-air gases and displace oxygen,
creating hazardous breathing environments.
6. What is the primary function of trench protective systems such as
shoring and shielding?
A. Improve soil excavation speed
B. Reduce cost of excavation operations
C. Replace the need for scene size-up
D. Prevent trench wall collapse and protect rescuers and victims
Shoring and shielding systems stabilize trench walls and reduce the
risk of secondary collapse during operations.
7. Which tool is most commonly used to monitor atmospheric conditions
in a trench?
A. Thermal imaging camera
B. Hydrometer
C. Sound level meter
D. Multi-gas detector
Multi-gas detectors measure oxygen levels and detect hazardous
gases such as carbon monoxide and hydrogen sulfide.
8. What is the primary purpose of a hazard control plan in trench rescue?
A. To assign media communication roles
B. To determine legal liability
C. To replace incident command structure
D. To identify and mitigate risks to rescuers and victims
A hazard control plan systematically reduces environmental and
structural risks at the incident scene.
9. Which action best supports victim survivability in trench collapse
incidents?
A. Delaying medical assessment until full shoring is complete
Certification Exam Practice Questions
And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which standard forms the primary basis for the certification
requirements of trench rescue technician-level personnel in many
jurisdictions, including Maryland?
A. NFPA 1500, Fire Department Safety and Health Program
B. NFPA 1001, Fire Fighter Professional Qualifications
C. NFPA 1006, Standard for Technical Rescue Personnel Professional
Qualifications
D. NFPA 1006, Standard for Technical Rescue Personnel Professional
Qualifications
NFPA 1006 defines the job performance requirements for technical
rescue disciplines, including trench rescue technician-level
competencies, and is widely adopted as the certification standard.
,2. A trench rescue technician is responding to a collapse incident. What is
the primary purpose of the initial size-up?
A. Immediately begin victim extrication without delay
B. Establish definitive shoring plans before arrival
C. Identify only the number of responders required
D. Determine scope, hazards, victims, and resource needs
Size-up is intended to gather critical incident information such as
hazards, victim status, and resource requirements to guide safe and
effective operations.
3. Which soil condition presents the highest risk for sudden trench wall
collapse?
A. Well-compacted gravel
B. Dry clay with stable moisture content
C. Rocky soil with minimal loose material
D. Previously disturbed or saturated soil
Disturbed or saturated soils lose cohesion and stability, significantly
increasing the likelihood of sudden trench wall failure.
4. What is the most effective immediate control measure for preventing
additional collapse near a trench edge?
A. Increasing victim movement to speed extraction
B. Placing equipment closer to the trench edge for access
C. Removing all shoring to reduce load
D. Keeping spoil piles and heavy loads away from the trench lip
Relocating loads and spoil piles away from the trench edge reduces
surcharge weight and helps prevent secondary collapse.
5. Which atmospheric hazard is most likely in a trench environment?
A. Elevated oxygen enrichment
B. Reduced humidity only
C. Stable atmospheric conditions
, D. Oxygen deficiency or toxic gas accumulation
Trenches can trap heavier-than-air gases and displace oxygen,
creating hazardous breathing environments.
6. What is the primary function of trench protective systems such as
shoring and shielding?
A. Improve soil excavation speed
B. Reduce cost of excavation operations
C. Replace the need for scene size-up
D. Prevent trench wall collapse and protect rescuers and victims
Shoring and shielding systems stabilize trench walls and reduce the
risk of secondary collapse during operations.
7. Which tool is most commonly used to monitor atmospheric conditions
in a trench?
A. Thermal imaging camera
B. Hydrometer
C. Sound level meter
D. Multi-gas detector
Multi-gas detectors measure oxygen levels and detect hazardous
gases such as carbon monoxide and hydrogen sulfide.
8. What is the primary purpose of a hazard control plan in trench rescue?
A. To assign media communication roles
B. To determine legal liability
C. To replace incident command structure
D. To identify and mitigate risks to rescuers and victims
A hazard control plan systematically reduces environmental and
structural risks at the incident scene.
9. Which action best supports victim survivability in trench collapse
incidents?
A. Delaying medical assessment until full shoring is complete
