Risk Management · 7 min read

How to Build a Risk Register That Your Team Will Actually Use

John O'Mahony, IPMA Level C June 2026 Risk Register · Risk Management · NPI · Capital Projects · Regulated Manufacturing · RAIDS
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Almost every manufacturing project I have worked on had a risk register. Almost none of them were being actively used by week four. The register was created at kick-off, populated in a workshop, and then filed somewhere it was never opened again until someone asked for it before a gate review.

This is not a discipline problem. It is a design problem. Most risk registers are built in a way that makes them difficult to maintain and easy to ignore. The structure is wrong, the ownership is unclear, and there is no natural moment in the project rhythm where reviewing it feels necessary rather than burdensome.

The good news is that fixing this is not complicated. A risk register that people actually use looks and works differently from one that does not, in a few specific and practical ways.

Why Risk Registers Stop Being Used

Before fixing the problem, it helps to understand why it happens. There are five reasons a risk register gets abandoned on manufacturing projects, and they are usually present in combination.

The Structure That Works

A risk register that gets used is one that is fast to review, easy to update, and built around ownership. Every row should contain exactly these fields, no more, no fewer.

FieldWhat It ContainsCommon Mistake
Risk IDA simple reference number (R-001, R-002 etc.)Not having one, which makes it impossible to reference risks in meeting notes
Risk DescriptionOne sentence: the event that might happen and the consequence if it doesVague descriptions like "supply chain issues" with no context
Likelihood (1–5)How likely the risk is to occur, scored on a consistent scaleScoring without agreeing the scale definition as a team first
Impact (1–5)How severe the consequence would be for the projectScoring impact on a different dimension than the one that matters (cost, schedule, quality)
Risk ScoreLikelihood × ImpactCalculating this inconsistently, or not using it to prioritise attention
OwnerA named individual, not a role, not a team"Engineering team" or "supplier", no individual accountability
Mitigation ActionWhat specific action will reduce the likelihood or impact, with a due date"Monitor and escalate", which means nothing actionable
StatusOpen / In Progress / Closed / EscalatedNever closing risks that have passed or been fully mitigated

How to Score Risks Consistently

Inconsistent scoring is one of the most common problems in risk registers. Two team members will score the same risk differently because they have not agreed what the numbers mean. Fix this by defining the scale explicitly at the start of the project and using the same definitions for every risk.

ScoreLikelihoodImpact on ScheduleImpact on Budget
1Unlikely, less than 10% chanceLess than 1 week delayLess than 2% variance
2Possible, 10–30% chance1–2 weeks delay2–5% variance
3Likely, 30–60% chance2–4 weeks delay5–10% variance
4Probable, 60–80% chance1–2 months delay10–20% variance
5Near certain, over 80% chanceMore than 2 months delayMore than 20% variance

A risk score of 15 or above (high likelihood, high impact) should be escalated to the project sponsor immediately. A score of 9–14 is a risk that needs active mitigation and weekly review. A score of 8 or below is a known risk that should be monitored but does not require active mitigation at this point.

Impact 1Impact 2Impact 3Impact 4Impact 5
Likelihood 5510152025
Likelihood 448121620
Likelihood 33691215
Likelihood 2246810
Likelihood 112345

Risks Versus Issues: Keep Them Separate

A risk is something that might happen. An issue is something that has already happened and is actively affecting the project. Many teams run these together in the same log, which creates confusion and makes it harder to manage either one well.

The practical difference matters: risks require preventive action, issues require corrective action. The owner of a risk is managing to prevent or reduce something. The owner of an issue is managing to resolve something that is already real. These are different tasks and deserve different tracking.

Combining risks and issues into a RAIDS log (Risks, Actions, Issues, Decisions, and Stakeholders) works well for smaller projects where maintaining separate registers creates overhead. What does not work is mixing risk entries and issue entries in the same rows without distinguishing between them.

How to Keep the Register Alive

The register stays alive when it is part of the normal project rhythm, not an extra thing added on top of it. Three habits make the difference.

Review it at every project meeting. Not a full line-by-line review every time, but a standing agenda item: are any red risks worse than last week, any new risks to add, any closed risks to remove? This takes five minutes when the register is in good shape.

Gate reviews must include a formal risk review. At every phase gate, the full risk register should be reviewed and re-scored. The risk profile of a project at Gate 3 is completely different from Gate 1. If you are carrying the same risks with the same scores across all four phases, the register has not been maintained.

Close risks that no longer apply. Risks that have been fully mitigated, or that the project has passed the point where they could occur, should be closed. A register full of stale risks from six months ago is as useless as no register at all.

A risk register that has not been updated in three weeks on an active project is not a risk management tool. It is a document that creates the appearance of risk management without providing any of the benefit.

J

John O'Mahony, IPMA Level C, Founder of Arcturus Pro

John spent eight years running NPI programmes in regulated manufacturing in Ireland before building Arcturus Pro. He built the platform because the tools available to manage those programmes did not match what the programmes actually needed.

Frequently Asked Questions

What should a risk register include?

A risk register should include a risk ID, a one-sentence risk description, a likelihood score, an impact score, a combined risk score (likelihood × impact), the named owner responsible for the mitigation action, the specific mitigation action with a due date, and the current status. Every risk needs a named individual owner. A risk without an owner is a concern, not a managed risk.

How often should a risk register be reviewed?

For a capital or NPI project, the risk register should be reviewed at every project status meeting, typically weekly or fortnightly. It should also be reviewed formally at each phase gate, with risks re-scored to reflect the current project state. A register reviewed less than monthly on an active project is not being managed.

What is the difference between a risk and an issue?

A risk is something that might happen. An issue is something that has already happened and is actively affecting the project. Both should be tracked, but separately. Risks require preventive action. Issues require corrective action. Many teams combine them into a RAIDS log (Risks, Actions, Issues, Decisions, and Stakeholders), which works well as long as risks and issues are clearly distinguished.

How many risks should be on a project risk register?

For most manufacturing or NPI projects, 10 to 20 active risks is a workable number. Fewer than 5 usually means the team has not thought hard enough about what could go wrong. More than 30 means the register has become a dumping ground. Focus on risks that are genuinely likely and would have a genuine impact on schedule, budget, or quality.

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