PD 5304:2005

Committees responsible
Foreword
Introduction by Dr Paul Davies (Chief Scientist and Engineer
of the Health and Safety Executive)
Section 1 - General
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
Section 2 - Application and strategy for selecting protective
            measures
2.1 Application and objective of the guidance
2.2 Strategy for selecting safety measures
Section 3 - Risk assessment
3.1 General
3.2 Probability of occurrence of harm
3.3 Severity of harm
3.4 Risk evaluation
Section 4 - Identification of hazards
4.1 Hazards from machinery
4.2 Mechanical hazards
4.3 Non-mechanical hazards
Section 5 - Aspects of machine design to eliminate or reduce
            risks
5.1 Checks by user
5.2 Further considerations for safeguards
5.3 Controls
5.4 Indicators
5.5 Unexpected/unintended start-up
5.6 Measures for the escape and rescue of trapped persons
5.7 Clutches
5.8 Braking systems
5.9 Safety catches, overrun, runback and fall-back protection
     devices
5.10 Counterweights and similar devices
5.11 Rotating shafts, spindles and couplings
5.12 Feeding and take-off devices
5.13 Hydraulic and pneumatic systems
5.14 Electrical systems
5.15 Workholding devices
5.16 Lifting, handling and transport
5.17 Lubrication
5.18 Stability
5.19 Lighting
5.20 Hygiene and guard design
5.21 Safety markings, signs (pictograms), written warnings
5.22 Access
5.23 Programmable systems
Section 6 - Selection of safeguards
6.1 General
6.2 Where access to the danger zone is not required
     during normal operation
6.3 Where access to the danger zone is required during
     normal operation
Section 7 - Guard design and construction
7.1 General
7.2 Types of guard
7.3 Guard construction
7.4 Anthropometric considerations
Section 8 - Protective devices
8.1 General
8.2 Trip devices
8.3 Pressure sensitive cables
8.4 Hold-to-run control
8.5 Enabling device
8.6 Two-hand control device
8.7 Limiting and limited movement control devices
8.8 Mechanical restraint device
8.9 Emergency operation - emergency stop and emergency
     switching off
Section 9 - Interlocking considerations
9.1 Functions of an interlock
9.2 Interlocking media
9.3 Interlocking methods for power interruption
9.4 Interlocking methods incorporating braking, purging, etc.
     and/or guard locking
9.5 Security of interlocking
9.6 Electrical interlocking devices
9.7 Mechanical interlocking devices
9.8 Pneumatic interlocking devices
9.9 Hydraulic interlocking devices
Section 10 - Safety-related control systems
10.1 General
10.2 Interlocking control systems and architectural
     considerations
10.3 Safety-related control systems
Section 11 - Installation considerations
11.1 Layout of machinery and plant
11.2 Moving parts of machinery
11.3 Services
Section 12 - Maintenance and safe working practices
12.1 General
12.2 Operational maintenance
12.3 Safe working practices
12.4 Supervisory control
12.5 Information and training
Annex A (normative) - Ergonomic data
Annex B (informative) - Use and selection of interlocking systems
Annex C (informative) - Essentials of a permit-to-work form
Bibliography

Gives guidance for users on: a) machinery designed to and manufactured in accordance with harmonized European machinery safety standards insofar as it is necessary, when following the instructions supplied for use; and b) basic principles of safeguarding, with reference to current harmonized European machinery safety standards.