MNO2607
Assignment 2
Semester 2
DUE 11 September 2025
, Semester 2 – 2025
Management of Construction and Mining Safety
ASSIGNMENT 02
DUE DATE: 11 September 2025
1. Hierarchy of safety management controls (15 marks)
(a) Define what is meant by safety management controls. (2)
Answer: Safety management controls are the policies, engineered measures,
procedures and behavioural/administrative actions put in place to eliminate hazards or
reduce the likelihood and severity of harm from workplace hazards. They form a
structured set of interventions from removing the hazard entirely to protecting workers
with equipment applied after hazards are identified and risks assessed.
(b) List and explain the five levels of the hierarchy of controls, starting with the
most effective. (5)
Answer (most → least effective):
1. Elimination - Physically remove the hazard so exposure no longer exists
(best/most effective control).
2. Substitution - Replace the hazard with something less hazardous (e.g.,
substitute a toxic solvent with a water-based alternative). Substitution is used
when elimination is not feasible.
3. Engineering controls - Isolate people from the hazard by physical means (e.g.,
guards, local exhaust ventilation, machine interlocks). These reduce reliance on
human behaviour.
4. Administrative controls - Change how people work (procedures, training,
signage, shift rotation, permits) to reduce exposure; these rely on human
compliance and supervision.
Assignment 2
Semester 2
DUE 11 September 2025
, Semester 2 – 2025
Management of Construction and Mining Safety
ASSIGNMENT 02
DUE DATE: 11 September 2025
1. Hierarchy of safety management controls (15 marks)
(a) Define what is meant by safety management controls. (2)
Answer: Safety management controls are the policies, engineered measures,
procedures and behavioural/administrative actions put in place to eliminate hazards or
reduce the likelihood and severity of harm from workplace hazards. They form a
structured set of interventions from removing the hazard entirely to protecting workers
with equipment applied after hazards are identified and risks assessed.
(b) List and explain the five levels of the hierarchy of controls, starting with the
most effective. (5)
Answer (most → least effective):
1. Elimination - Physically remove the hazard so exposure no longer exists
(best/most effective control).
2. Substitution - Replace the hazard with something less hazardous (e.g.,
substitute a toxic solvent with a water-based alternative). Substitution is used
when elimination is not feasible.
3. Engineering controls - Isolate people from the hazard by physical means (e.g.,
guards, local exhaust ventilation, machine interlocks). These reduce reliance on
human behaviour.
4. Administrative controls - Change how people work (procedures, training,
signage, shift rotation, permits) to reduce exposure; these rely on human
compliance and supervision.
