Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p42
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 108503–111175

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 machine and familiar with its controls.
No control or light switch should be in such a position that the user is required to lean over the machinery to reach it.
A machine in use should never be left unattended and should always be stopped when it is not in use.
Before a drill or lathe is started, the chuck key should be removed and the machine operator should ensure that other people are clear of the machine.
Work pieces for drilling and milling should be securely held at all times by a machine vice or clamp.

8.3              Abrasive wheels
Abrasive wheels should be selected, mounted and used only in accordance with the manufacturer's instructions and by a competent person. They are relatively fragile and should be stored and handled with care.
A wheel should be closely inspected for damage and brushed clean before it is mounted.
The clamping nut should be tightened only enough to hold the wheel firmly.
A strong guard should be provided and kept in position at every abrasive wheel both to contain the parts in the event of the wheel bursting and to prevent the user from coming into contact with the wheel.
The speed of the spindle should not exceed the stated maximum speed of the wheel and should be periodically checked.
When dry grind operations are being carried out or an abrasive wheel is being trued or dressed, suitable transparent screens should be fitted in front of the exposed part of the wheel and users must wear properly fitting suitable eye protection.

8.4              Compressed gas cylinders
The labelling, stowage and carriage of compressed gas cylinders are governed by the IMDG code. Cylinders should always be handled with care, whether full or empty.
Cylinders should be properly secured and kept upright but must be capable of quick release. Oxygen and fuel gas cylinders (such as acetylene) should be kept in separate, well-ventilated compartments that are not subject to extremes of temperature. The space should have no electrical fittings or other sources of ignition. "No smoking" signs should be displayed at the entrance and within the space.
Protective caps over the valve should be screwed in place when cylinders are not in use or are being moved. Valves should be closed when the cylinder is empty.
Cylinder valves controls and associated fittings should be kept free from oil, grease and paint. Controls should not be operated with oily hands.
Gas cylinders should be clearly marked with