The most important system we have developed for New Zealand’s ammonia industry.

Ammonia is a hazardous material. Technical training matters, but training a few refrigeration people and producing a broad emergency response document can create more confidence than capability. The question is not whether the plan exists. The question is whether people can use it when conditions are difficult, information is incomplete and time matters.

A plan is not a capability

An emergency response plan describes the immediate, effective and safe actions expected after an event. Emergency capability is broader. It includes the resources, competence and coordination needed to carry out those actions.

A written plan may satisfy an administrative need, but it cannot detect ammonia, interpret a changing release, protect a responder or make a sound isolation decision. Those outcomes depend on the system around the document.

The questions that expose the gaps

Most workplace drills test an orderly evacuation. They rarely test the conditions that make a real ammonia emergency difficult. A useful exercise should ask what happens when normal assumptions fail.

• 01Can the site continue essential operations, or must business continuity arrangements be activated?
• 02What happens if people are missing, injured or unable to reach the normal assembly area?
• 03Can people determine wind direction at night, in rain or after a power failure?
• 04What if radios, phones, alarms or the usual command location are unavailable?
• 05Who provides plant-specific information while external responders are still travelling?
• 06Can the site explain the release, threatened areas, isolation status and immediate priorities clearly?

Calling emergency services is not the whole plan

Fire and Emergency New Zealand may need time to reach a rural or regional facility, especially when specialist hazardous-material resources are required. During that period, the site must still protect people, control access, communicate reliable information and avoid actions that could worsen the event.

External responders bring command, rescue and hazardous-material capability. The site brings detailed knowledge of the ammonia plant, its operating condition and its isolation options. A strong response connects those strengths through clear coordination and a shared incident-management structure.

Better situational awareness supports a safer initial response and a more effective handover to external services.

What weak plans have in common

Weak plans often look acceptable until somebody tries to use them. These indicators should be treated as reasons to review and test the system:

• 01The response begins and ends with calling emergency services.
• 02The document uses phrases such as “in an emergency” without defining conditions or triggers.
• 03People are named but their duties, contact details and deputies are not clear.
• 04Specialist refrigeration contractors and technical advisers are missing from the response structure.
• 05The assembly area or escape route does not account for wind direction and plume movement.
• 06There is no credible shelter-in-place strategy, ammonia first-aid provision or response map.
• 07A complex technical action is assigned without first proving that it will improve the situation.
• 08Business continuity, crisis management and third-party communication are treated as separate problems.

Triggered Action Response Planning

The Ammonia Specific Emergency Management Plan was developed with the Mines Rescue Trust of New Zealand to fit beneath an organisation’s existing emergency plan. It uses Triggered Action Response Planning, or TARP, to connect observable conditions with predefined actions, responsibilities and escalation points.

The framework was reviewed with an industry advisory group that included emergency services and specialist organisations. The intent was practical: simplify the tools people use under pressure, strengthen situational awareness and support integration with New Zealand’s Coordinated Incident Management System.

Rapid-reference tools and duty cards help turn the plan into actions. They do not replace judgement or technical expertise. They give each role a reliable starting point, make handovers clearer and reduce dependence on one person’s memory.

Every role needs usable actions

Test low before going live

New Zealand’s hazardous-substances requirements state that an emergency response plan, where required, must be tested at least every 12 months. The test must demonstrate that every procedure and action in the plan is workable and effective. Relevant changes to the people, procedures or actions in the plan require testing within three months.

That test should be more than a familiar evacuation. Start with low-level desktop scenarios that let people practise decisions without operational risk. Introduce failed communications, unavailable personnel, changing wind, casualties and uncertain plant conditions. Record what people knew, what they did, what delayed them and what resources were missing.

Use the results to improve duty cards, equipment, training and escalation thresholds. Then progress to practical exercises and, where appropriate, coordinated exercises with contractors and emergency services. The exercise is successful when it reveals the true capability of the site, not when everyone follows a comfortable script.

Adapted and updated from Pádraic Durham’s original LinkedIn article. Read the original on LinkedIn ↗