Risk Assessment

Project-Specific Risk Assessments

Tab 7 of the creation wizard allows you to add custom risk assessments for hazards specific to this project that are not covered by the standard hazard library. Whilst the hazard library (Tab 5) covers common industry hazards, every project has unique risks requiring bespoke assessment. Each assessment uses the RiskMatrixCalculator component — an interactive 5×5 risk matrix that calculates both initial and residual risk ratings.

Per Hazard Assessment Fields

Each hazard assessment requires the following information:

• Hazard Description — a free-text description of the hazard and the circumstances in which it may arise
• Initial Risk Rating — the risk level before any control measures are applied, calculated as likelihood × severity
• Controls — a free-text description of the risk control measures to be implemented
• Residual Risk Rating — the risk level after control measures are applied, calculated as likelihood × severity
• Residual Risk Level — automatically calculated from the residual rating (low, medium, or high)

Risk Matrix Scales

Score	Likelihood	Severity
1	Improbable	Negligible
2	Remote	Minor
3	Occasional	Moderate
4	Probable	Serious
5	Imminent	Catastrophic

Risk Calculation

The risk rating is calculated using the formula L × S = R, where L is the likelihood score (1–5), S is the severity score (1–5), and R is the resulting risk rating (1–25).

Risk Level Thresholds

Rating Range	Risk Level	Colour
1–5	Low	Green
6–12	Medium	Orange/Amber
13–25	High	Red

Effectiveness Metrics

The system automatically calculates effectiveness metrics for each assessment:

• Risk Reduction Percentage — calculated as (initial − residual) ÷ initial × 100, indicating how effective the control measures are
• controlsWereEffective — returns true if the residual risk rating is lower than the initial risk rating
• isResidualRiskAcceptable — returns true if the residual risk level is low or medium

Validation

All fields are required before a hazard assessment can be added. The hazard description, both likelihood and severity scores for initial risk, the controls text, and both likelihood and severity scores for residual risk must all be completed. The system will display validation errors for any missing fields.

Show Page Display

On the phase plan Show page, each risk assessment is displayed with initial and residual risk presented as colour-coded chips. The chips follow the format L × S = R, making it immediately clear how the risk was calculated and how effective the controls are.

Sort Order

Assessments can be reordered by dragging them into the desired sequence. The sort order is preserved when saving and is reflected in both the Show page and the generated PDF document.

Tips

• Use this tab for project-specific hazards only — common hazards should be selected from the library in Tab 5
• Aim for residual risk ratings in the low range (1–5) wherever possible
• If a residual risk remains high (13–25), document additional controls or escalate to a senior manager for review
• Be specific in your control measures — vague controls such as "be careful" are not acceptable
• Review the effectiveness metrics before submitting the phase plan for approval