Pillar service

Hazardous Area Inspections & Surveys

The complete path to a compliant explosive-atmosphere installation — survey, classification, upgrade and independent inspection, all from one specialist team.

What we do

Six deliverables, one accountable partner.

Combine them into a full compliance programme, or drop one in to close a specific gap.

01

Hazardous-area surveys & classification

We walk down your plant, identify every release source of flammable gas or combustible dust, and produce hazardous-area classification diagrams that define your zones to AS/NZS 60079.

  • Gas and dust release-source identification
  • Zone 0/1/2 and Zone 20/21/22 determination
  • Hazardous-area classification (dossier) drawings
02

Ammonia system compliance & detection

Compliance assessment and gas-detection design for ammonia refrigeration and coolstore plant — the highest-demand area of hazardous-area work in New Zealand right now.

  • Ammonia detection system design & installation
  • Refrigeration plant compliance review
  • See our dedicated ammonia page →
03

System design & design-build

Ex-rated electrical design and design-build for ammonia, refrigerant, bitumen and methanol environments — new installations engineered compliant from day one.

  • Ex-rated electrical design
  • Intrinsically-safe (Ex i) circuit design
  • Design-build for new hazardous-area plant
04

Equipment upgrade, rewiring & barriers

Bring non-compliant installations up to standard — Ex equipment replacement, rewiring, gland and seal remediation, and intrinsically-safe barrier installation.

  • Ex equipment replacement & upgrade
  • Cable, gland and seal remediation
  • IS barrier installation
05

Independent EEHA inspection

Detailed and close inspection of installed Ex equipment by inspectors competent in Electrical Equipment in Hazardous Areas — the check that confirms your installation matches its classification.

  • Initial, periodic and sample inspection
  • Non-conformance register with priorities
  • Mapped to AS/NZS 60079.17 inspection regime
06

Verification dossier & sign-off

We compile the verification dossier — classification, equipment schedules, inspection records and compliance evidence — and issue final sign-off you can hand to an insurer, auditor or council.

Standards

Everything mapped to recognised standards.

AS/NZS 60079EEHAIECExExWorkSafe NZPECPR
Where are you on compliance?

Start with a survey.

Whether you're building new, upgrading, or just need to know where you stand — a hazardous-area survey is the first step. Let's scope it.

Book an assessment 03 548 5871