Electrical Equipment in Hazardous Areas (EEHA)

All hazardous area equipment for use in flammable gas, vapour, mist or dust environments must be installed in accordance with AS/NZS 60019.14 and tested/inspected in accordance with AS/NZS 60019.17.

ELSE provides inspection and completion services for electrical equipment installed in hazardous areas (EEHA). We deliver EEHA field engineering services to surveillance of activities during construction, installation and commissioning stages, and contract highly trained and experiences inspectors to assure field installations meet the standard requirements. Our EEHA team are qualified in accordance with AS4761, and experienced in managing the inspection of Electrical Equipment in Hazardous Areas.

Our EEHA capability includes:

  • Hazardous area classification – flammable gas, vapor, mists and combustible dusts – various standards
  • Inspections – highly trained and experiences inspectors qualified in accordance with AS4761
  • Documentation – hazardous area compliance and verification dossier
  • Loop calculations (IS calculation) – intrinsic safety (Ex i) products – third party signoff
  • Maximum dissipated power (MDP) calculations – increased safety (Ex e) products – third party signoff
  • Conformity assessments (CADs) – ATEX and other foreign certified products
  • Commissioning – of Ex p and Ex v systems
  • Compliance assessment reports – Ex p and Ex v systems
  • AS1940 Compliance – flammable & combustible liquid installation inspections & reports
  • Factory acceptance test (FAT) Witnessing
  • Technical queries – resolution of technical queries for hazardous area installations


While the maximum inspection frequency quoted by AS/NZS 60079.17 is 4 years, it is not recommended that such a great inspection interval be adopted. Where corrosion is an issue (either from the process or due to the proximity to the ocean) a period of 1 year is recommended. In practice, periods should be set for all other place to 24 months at a maximum, particularly in harsh environments such as hot, remote areas subject to continual action of UV radiation and/or corrosion.