Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p41
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 106006–108730

tool is released from the hand. Portable electrical tools and appliances should not be used in a potentially flammable, oxygen enriched or explosive atmosphere, unless they are certified for use in such an atmosphere and the action is authorised by a responsible officer.
The risk of electric shock is increased by perspiration and locations which are damp, humid or have large conductive surfaces. In such conditions power tools should be operated from low voltage supplies (e.g. no more than 50 volts AC with a maximum of 30 volts to earth or 50 volts DC).
Where it is not practicable to use low voltages, other precautions such as a local isolating transformer supplying one appliance only or a high sensitivity earth leakage circuit breaker (also known as a residual current device) should be used.
Hand-held tools manufactured with non-metallic cases are called double-insulated. Although this design reduces the risk of grounding deficiencies, a shock hazard can still exist. Double insulated tools are not recommended for use on ships because water can provide a contact between live parts and the casing, increasing the risk of a fatal shock. An earth leakage circuit breaker may also fail to operate when used with such tools as there may be no earth wire in the power supply cable fitted to the tool.
Ensure that electrical leads and hydraulic/pneumatic tool hoses are kept clear of anything that might damage them and that they do not obstruct safe passage. Where they pass through doorways, the doors should be secured open.
Power tools should be switched off and disconnected from the power source when not in use. Tool pieces, such as drills or bits, must be secured in the tool and should not be fixed or replaced while the tool is connected to a power source.

8.2              Workshop and bench machines
Permanent signs should be fitted above workshop and bench machines alerting users to any necessary precautions appropriate to the machine, such as the wearing of eye protection.
All dangerous parts of machines, for example revolving shafts, gearing and belt drives, must be properly guarded. Before use, the operator should check that:
       guards and safety devices are in position and operative
       all tool pieces (e.g. drill bits and cutting blades) are in good condition, and
       the work area is adequately lit and free from clutter. This includes ensuring that machine residues such as metal turnings and swarf do not build up excessively, and are disposed of safely.
If any defect is identified, the machine should be isolated from its source of power, tagged and/or locked out until it has been repaired by a competent person.
Machine operators should be competent in the use of the