Occupational Health and Safety Act, 1993 (Act No. 85 of 1993)

Code of Practice

National Code of Practice for Electrical Machinery in Hazardous Locations

Regulatory requirements for explosion-protected apparatus

7. Apparatus marking

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7.1 General

 

Due to the potential disastrous consequences if the wrong equipment is used, all equipment shall be clearly labelled with information supporting the safe use of the equipment.

 

NOTE   Annex C gives information on the marking of explosion-protected equipment certified under different product certification schemes.

 

7.2 Marking

 

Marking shall be

(a)durable,
(b)visible in all installation configurations, and
(c)legible.

 

7.3Test for durability

 

7.3.1Rub the marking lightly for 15 s with a piece of cloth soaked with water.

 

7.3.2After drying, rub for a further 15 s with a piece of cloth soaked with white spirit.

 

NOTE  White spirit is also known as mineral spirits, mineral turpentine,turpentine substitute, petroleum spirits, and solvent naphtha (petroleum), and composed of a mixture of aliphatic and alicyclic C7 to C12 hydrocarbons with a maximum content of 25 %, by mass, of c7 to c12 aromatic hydrocarbons. This will not affect the marking.