Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p56
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 144330–147300

clamping, soldering, riveting, brazing and crimping or equivalent means.
Where armoured cables are joined, care should be taken to continue the conductive bond between the armouring of the cables by bridging the junction boxes.
All conductors and apparatus that may be exposed to a flammable or explosive atmosphere should be constructed to prevent ignition of the vapour or explosive dust. Reference should be made to the International Electrotechnical Commission (IEC) 60079 series of explosive atmosphere standards.
The supply voltage to portable tools and appliances should generally not exceed 240V.
A hand lamp or other portable lamp should be of an approved type with effective protection for the bulb and with a suitable cover of glass or other transparent material. Such equipment should be dust and water proof and, where necessary, gas proof.
When using portable equipment or portable lamps, ensure that any flexible cables passing through doors, hatches or other openings are protected and that their insulation is not damaged by the closing of doors, covers or lids.
A sufficient number of well-placed socket outlets should be provided so that permanent extension leads are not needed.

12.2              High-voltage systems
A high voltage apparatus is any apparatus, equipment or conductors normally operated at a voltage higher than 1000 volts alternating current (1000 V a.c.) or 1500 volts direct current (1500 V d.c).
High-voltage systems are very dangerous and therefore only competent persons should work on them. Additional precautions are necessary to ensure safety when work is to be undertaken on high voltage equipment / installations.
Manufacturer's instruction manuals should be provided for all high-voltage equipment and be closely followed.
All high-voltage equipment should be enclosed or protected. Access should be only obtained by authorised persons using a special tool or key that is retained by the responsible engineer officer, unless the equipment is designed in a way to ensure that any attempt at access will automatically isolate and render it safe.
Work on high voltage equipment should not be carried out unless an agreed switching plan has been developed and implemented so that the equipment /installations are isolated. A switching plan is a plan or programme, developed by the authorised person, which details the intended sequence of switching, isolation and earthing operations required to be carried out to isolate and make dead, or reinstate and make live, high voltage equipment or installation.
The switching plan must be agreed between the authorised and the competent persons undertaking the task prior to executing the plan. If contractors are involved, then their agreement is also required.

12.3              Rectifiers and electronic equipment
Working near charged capacitors associated with rectification circuits is hazardous.
Maintenance or repair work should not be attempted until the equipment has been