ISO 14120:2015
Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards
ISO 14120:2015 specifies general requirements for the design, construction, and selection of guards provided to protect persons from mechanical hazards.
ISO 14120:2015 indicates other hazards that can influence the design and construction of guards.
ISO 14120:2015 applies to guards for machinery which will be manufactured after it is published.
The requirements are applicable if fixed and movable guards are used. This International Standard does not cover interlocking devices. These are covered in ISO 14119.
ISO 14120:2015 does not provide requirements for special systems relating specifically to mobility such as ROPS (rollover protective structures), FOPS (falling-object protective structures), and TOPS (tip over protective structures) or to the ability of machinery to lift loads.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Risk assessment
5 General requirements for the design and construction of guards
5.1 Machine aspects
5.1.1 General
5.1.2 Access to hazard zones
5.1.3 Containment of ejected parts and other impacts
5.1.4 Containment of hazardous substances
5.1.5 Noise
5.1.6 Radiation
5.1.7 Potentially explosive atmosphere
5.2 Human aspects
5.2.1 General
5.2.2 Safety distances
5.2.3 Control of access to the hazard zone
5.2.4 Viewing
5.2.5 Ergonomic aspects
5.2.6 Intended use
5.3 Guard design and construction aspects
5.3.1 General
5.3.2 Crushing or trapping points
5.3.3 Durability
5.3.4 Hygiene
5.3.5 Cleaning
5.3.6 Exclusion of contaminants
5.3.7 Sharp edges, etc.
5.3.8 Integrity of joints
5.3.9 Removal of fixed guards
5.3.10 Mounting of removable fixed guards
5.3.11 Adjustable guards
5.3.12 Movable guards
5.3.13 Closed position of movable guards
5.3.14 Interlocking guards with a start function (control guards)
5.4 Materials, rigidity, and impact requirements
5.4.1 General
5.4.2 Impact and ejection resistance
5.4.3 Rigidity
5.4.4 Secure fixing
5.4.5 Reliability of moving parts
5.5 Containment
5.6 Resistance to corrosion
5.7 Resistance to microorganisms
5.8 Non-toxicity
5.9 Machine viewing
5.10 Transparency
5.11 Shadows and stroboscopic effects
5.12 Electrostatic properties
5.13 Guards with electrically conductive parts
5.14 Thermal stability
5.15 Fire and flammability
5.16 Noise and vibration reduction
5.17 Radiation protection
5.18 Climbing
5.19 Retained fastenings
5.20 Vibration resistance
5.21 Warning signs
5.22 Colour
5.23 Appearance
6 Selection of types of guards
6.1 General
6.2 Combination of different guards or of guards with other devices
6.3 Selection of guards according to the number and size of the hazards
6.4 Selection of guards according to the nature and frequency of access required
6.4.1 General
6.4.2 Moving transmission parts
6.4.3 Where access is not required during use
6.4.4 Where access is required during use
7 Verification of the safety requirements for guards
7.1 General
7.2 Verification and validation methods
7.3 Required verification and validation
8 Information for use
8.1 General
8.2 Guard hazards
8.3 Installation
8.4 Operation
8.5 Removal of guards
8.6 Inspection and maintenance
Annex A (informative) Example of retained fastening
Annex B (informative) Example of projectile test method for mechanically testing guards
Annex C (informative) Example of pendulum test method for mechanically testing guards
Annex D (informative) Relationship between International Standards referenced in Clause 2 and corresponding European Standards
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Risk assessment
5 General requirements for the design and construction of guards
5.1 Machine aspects
5.1.1 General
5.1.2 Access to hazard zones
5.1.3 Containment of ejected parts and other impacts
5.1.4 Containment of hazardous substances
5.1.5 Noise
5.1.6 Radiation
5.1.7 Potentially explosive atmosphere
5.2 Human aspects
5.2.1 General
5.2.2 Safety distances
5.2.3 Control of access to the hazard zone
5.2.4 Viewing
5.2.5 Ergonomic aspects
5.2.6 Intended use
5.3 Guard design and construction aspects
5.3.1 General
5.3.2 Crushing or trapping points
5.3.3 Durability
5.3.4 Hygiene
5.3.5 Cleaning
5.3.6 Exclusion of contaminants
5.3.7 Sharp edges, etc.
5.3.8 Integrity of joints
5.3.9 Removal of fixed guards
5.3.10 Mounting of removable fixed guards
5.3.11 Adjustable guards
5.3.12 Movable guards
5.3.13 Closed position of movable guards
5.3.14 Interlocking guards with a start function (control guards)
5.4 Materials, rigidity, and impact requirements
5.4.1 General
5.4.2 Impact and ejection resistance
5.4.3 Rigidity
5.4.4 Secure fixing
5.4.5 Reliability of moving parts
5.5 Containment
5.6 Resistance to corrosion
5.7 Resistance to microorganisms
5.8 Non-toxicity
5.9 Machine viewing
5.10 Transparency
5.11 Shadows and stroboscopic effects
5.12 Electrostatic properties
5.13 Guards with electrically conductive parts
5.14 Thermal stability
5.15 Fire and flammability
5.16 Noise and vibration reduction
5.17 Radiation protection
5.18 Climbing
5.19 Retained fastenings
5.20 Vibration resistance
5.21 Warning signs
5.22 Colour
5.23 Appearance
6 Selection of types of guards
6.1 General
6.2 Combination of different guards or of guards with other devices
6.3 Selection of guards according to the number and size of the hazards
6.4 Selection of guards according to the nature and frequency of access required
6.4.1 General
6.4.2 Moving transmission parts
6.4.3 Where access is not required during use
6.4.4 Where access is required during use
7 Verification of the safety requirements for guards
7.1 General
7.2 Verification and validation methods
7.3 Required verification and validation
8 Information for use
8.1 General
8.2 Guard hazards
8.3 Installation
8.4 Operation
8.5 Removal of guards
8.6 Inspection and maintenance
Annex A (informative) Example of retained fastening
Annex B (informative) Example of projectile test method for mechanically testing guards
Annex C (informative) Example of pendulum test method for mechanically testing guards
Annex D (informative) Relationship between International Standards referenced in Clause 2 and corresponding European Standards
Bibliography