COSHEM study materials
COSHEM study resources

COSHEM flashcards

COSHEM · Build recall with a focused review session.

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Reasonably practicable
A legal test weighing the likelihood and severity of harm against the cost and difficulty of control; grossly disproportionate cost can justify not implementing a measure.
Officer due diligence
The statutory defence requiring an officer to show knowledge of the hazard, understanding of the operation, available resources and actual steps taken to manage risk.
Prohibition notice
A regulator-issued direction that stops an activity posing an immediate serious risk until specified remedial action is completed and verified.
Harmonized Structure clauses
The ten-clause framework used by ISO management system standards: context, leadership, planning, support, operation, performance evaluation and improvement, shared across ISO 45001, 9001 and 14001.
Documented information
ISO 45001 term covering both documents and records that must be created, controlled, protected, version-managed and retained to the extent the organisation determines necessary.
Management review inputs
Required ISO 45001 clause 9.3 inputs including incident trends, audit results, compliance evaluation, monitoring data, worker consultation and changes in external and internal issues.
Hierarchy of control
The ranked order of risk controls from elimination and substitution through engineering and administrative controls to personal protective equipment, which is least reliable.
Bow-tie analysis
A diagram placing a top event in the centre, threats and preventive barriers on the left, consequences and mitigative barriers on the right, used to test barrier independence.
ALARP
As low as reasonably practicable: risk must be reduced until further control is grossly disproportionate in cost to the benefit obtained.
Residual risk
The risk remaining after controls are applied; it must be recorded, accepted by an authorised person and re-assessed when conditions change.
TWA exposure calculation
Sum of concentration multiplied by time for each exposure period, divided by eight hours, giving the eight-hour time-weighted average for comparison with the exposure limit.
Mixture exposure formula
For substances with additive effects, sum each component concentration divided by its limit; a total exceeding one indicates the exposure limit is exceeded.
Flash point
The lowest temperature at which a liquid gives off enough vapour to ignite momentarily when a flame is applied; lower values indicate greater fire hazard.
Chain of infection
Infectious agent, reservoir, portal of exit, transmission mode, portal of entry and susceptible host; control breaks any one link in this sequence.
LEX,8h noise calculation
The equivalent continuous sound level normalised to eight hours, calculated as measured level plus ten times the logarithm of exposure hours divided by eight.
Hand-arm vibration A(8)
The eight-hour energy-equivalent vibration exposure, calculated as vibration magnitude multiplied by the square root of exposure time divided by eight.
WBGT index
A heat stress index combining dry-bulb, natural wet-bulb and black globe temperatures, compared against reference values that depend on metabolic rate and acclimatisation.
Sievert
The unit of equivalent radiation dose, equal to absorbed dose in gray multiplied by the radiation weighting factor that accounts for biological effectiveness.
NIOSH lifting equation
A formula producing a recommended weight limit from load constant and multipliers for horizontal, vertical, distance, asymmetry, frequency and coupling factors.
REBA score
A rapid whole-body postural assessment scoring action levels from negligible risk through investigate and change soon to immediate action required.
Display screen equipment assessment
A workstation evaluation covering seat and screen height, viewing distance, forearm and foot support, glare and adjustability for the individual user.
Demand-control model
Karasek's model in which high job demands combined with low decision control produce high strain, the highest psychosocial risk combination.
Effort-reward imbalance
A psychosocial model in which high effort combined with low reward in pay, esteem, security or career opportunity predicts stress-related illness.
ISO 45003
Guidance standard for managing psychological health and safety at work, covering hazard identification, assessment and control within an ISO 45001 system.
Fatigue risk controls
Measures addressing hours of work, shift design, time of day, task monotony and environment, including roster limits, breaks, napping policy and journey management.
Root cause analysis
Structured methods such as five whys, fishbone, fault tree and events and causal factors charting used to find system causes rather than blaming individuals.
Notifiable incident
A fatality, serious injury, dangerous occurrence or prescribed occupational disease that must be reported to the regulator within the statutory time limit.
Emergency drill evaluation
A structured debrief against pre-set objectives, recording performance, gaps and corrective actions that feed back into the emergency plan and training.
Training needs analysis
A three-level assessment at organisational, task and individual level that determines what training is required, for whom and to what standard.
Kirkpatrick evaluation levels
Four levels of training evaluation: reaction, learning, behaviour change on the job, and results such as incident rates and compliance.
LTIFR
Lost-time injury frequency rate, calculated as lost-time injuries multiplied by one million and divided by hours worked, normalising injury counts by exposure.
Compliance evaluation
The ISO 45001 clause 9.1.2 requirement to evaluate legal and other requirements at a defined frequency, using a defined method and retaining results.