Occupational Health and Safety Act, 1993 (Act No. 85 of 1993)Code of PracticeNational Code of Practice for Electrical Machinery in Hazardous LocationsRegulatory requirements for explosion-protected apparatus7. Apparatus marking |
| 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. |
| 7.3 | Test for durability |
| 7.3.1 | Rub the marking lightly for 15 s with a piece of cloth soaked with water. |
| 7.3.2 | After 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.