Risk Register
Select an assessment to edit its hazards
Score = Likelihood × Severity (calculated, not generated). Target scores are after proposed controls.
5×5 scale definitions
Likelihood (L)
- 1 Rare — Not expected to occur; only in exceptional circumstances
- 2 Unlikely — Could occur but not expected
- 3 Possible — Might occur at some point during the work
- 4 Likely — Will probably occur during the work
- 5 Almost certain — Expected to occur unless controlled
Severity (S)
- 1 Negligible — No injury or first aid only
- 2 Minor — Minor injury or ill health; short absence
- 3 Moderate — Injury or ill health needing medical treatment / lost time
- 4 Major — Serious injury, long-term ill health or permanent disability
- 5 Catastrophic — Fatality or multiple serious injuries
Risk score = L × S (1–25)
- Low 1–4
- Medium 5–9
- High 10–14
- Very high 15–25
| # | Hazard / harm | Exposed | Existing controls | Initial L×S | Proposed controls / actions | Owner / due | Target (after proposed controls) | Legal refs | Source / evidence | Status | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Open edges at roof and slab perimeter Falls from height — fatal / major injury | Duct fitters, roof plant installers | Edge protection installed by principal contractor | 15 · Very high L3 × S5 | Daily edge protection inspection; exclusion zone 2 m from unprotected edges; harness on MEWP | Site supervisor 2026-11-10 | 5 · Medium L1 × S5 | S.L. 646.27; S.L. 646.11 (screen — verify) | From evidence Method statement MS-07 §4 | Actions open | |
| 2 | Manual handling of duct sections Musculoskeletal injury, back strain | Duct fitters | Two-person lift for sections > 25 kg | 12 · High L4 × S3 | Use material lift / duct jack; pre-assemble at floor level | MEP foreman 2026-11-12 | 6 · Medium L2 × S3 | S.L. 646.10 | Manual entry | Reviewed | |
| 3 | Contact with live electrical services in ceiling void Electric shock, burns | Fitters drilling soffit | Services drawings available | 10 · High L2 × S5 | Cable avoidance scan before drilling; permit-to-work for isolation | Electrical coordinator 2026-11-08 | 5 · Medium L1 × S5 | S.L. 646.27; S.L. 646.11 (screen — verify) | From evidence Permit PTW-112 | Verified | |
| 4 | Silica dust and noise from drilling concrete Respiratory disease; noise-induced hearing loss | Fitters, adjacent trades | FFP3 masks issued | 16 · Very high L4 × S4 | On-tool extraction (M-class); hearing protection zone; rotate tasks | Site supervisor 2026-11-15 | 6 · Medium L2 × S3 | S.L. 646.14; S.L. 646.20; S.L. 646.13 (screen — verify) | Manual entry | Actions open | |
| 5 | Dropped objects from MEWP / ceiling level Head injury to persons below | Other trades, visitors | Hard hats mandatory | 12 · High L3 × S4 | Tool lanyards; barriers and signage below work zone | MEP foreman 2026-11-09 | 4 · Low L1 × S4 | S.L. 646.27; S.L. 646.09 (screen — verify) | Manual entry | Draft | |
| 6 | Simultaneous operations with ceiling and electrical trades Collisions, struck-by, uncontrolled interfaces | All trades on Level 3 | Weekly coordination meeting | 12 · High L3 × S4 | Daily SIMOPS briefing; zone permits; shared lookahead plan | Project manager 2026-11-07 | 6 · Medium L2 × S3 | S.L. 646.27 | Manual entry | Draft |
Initial risk matrix
Likelihood
5 Almost certain
5
10
15
20
25
4 Likely
4
8
1
1
20
3 Possible
3
6
9
2
1
2 Unlikely
2
4
6
8
1
1 Rare
1
2
3
4
5
1
Negligible
Negligible
2
Minor
Minor
3
Moderate
Moderate
4
Major
Major
5
Catastrophic
Catastrophic
Severity
Low 1–4Medium 5–9High 10–14Very high 15–25Bold cells show hazard count
Target risk matrix — after proposed controls
Likelihood
5 Almost certain
5
10
15
20
25
4 Likely
4
8
12
16
20
3 Possible
3
6
9
12
15
2 Unlikely
2
4
3
8
10
1 Rare
1
2
3
1
2
1
Negligible
Negligible
2
Minor
Minor
3
Moderate
Moderate
4
Major
Major
5
Catastrophic
Catastrophic
Severity
Low 1–4Medium 5–9High 10–14Very high 15–25Bold cells show hazard count