An employer must ensure that -
- every danger building is protected against lightning;
- every lightning protection system is examined and tested by a person with sufficient knowledge, training and experience in lightning protection;
- the examination and testing is carried out at least every 12 months in the month of September for summer rainfall areas and in January for winter rainfall areas;
- the results of every examination and testing contemplated in are recorded in a register and are made available on the premises for inspection by an inspector; and
- all danger buildings with metal walls or roofs, and all plant and machinery in such buildings, are adequately earthed and bonded .