EPC 28 - Hazardous area Installation Requirements

Question 1

Which section of AS/NZS 3000 provides the scope for the selection of equipment and its safe
installation in Hazardous areas?

Answer 1

AS/NZS 3000 Clause 7.7 Hazardous Areas (Explosive Gas or Combustible Gas)

Question 2

Who has the responsibility for the classification of hazardous areas?

Answer 2

The responsibility rests with the persons or parties in control of the installation.
Clause 7.7.2.1

Question 3

What are the two classifications in AS/NZS 3000 for hazardous areas?

Answer 3

Hazardous Areas (gas or Vapour) Clause 7.7.2.2(a)

Hazardous Areas (dust) Clause 7.7.2.2(b).

Question 4

According to AS/NZS 3000 how are hazards reduced or eliminated in hazardous areas?

Answer 4

Hazards are reduced or eliminated through design and operation. Clause 7.7.2.3

Question 5

Which Australian Standard series specifies the requirements relating to the selection and installation of electrical equipment in hazardous areas?

Answer 5

The AS/NZS 60079.14 series

See AS/NZS 3000 Clause 7.7.2.4.1 and Appendix A.

Question 6

AS/NZS 3000 provides information relating to degrees of protection of enclosed equipment. What does IP56 mean?

Answer 6

IP56.
5 - Limited ingress of dust permitted.
6 - Protected against strong jets of water. (Figure G1).