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BS EN ISO 14120:2015 - TC Tracked Changes. Safety of machinery. Guards. General requirements for the design and construction of fixed and movable guards, 2019
- BS EN 953:1997+A1:2009ISO 14120:2015 BRITISH STANDARD
- Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards (ISO 14120:2015)
- ForewordEuropean foreword [Go to Page]
- Endorsement notice
- 3
- (informative)
- Foreword
- Introduction [Go to Page]
- 1 Scope
- 2 Normative references
- 3 DefinitionsTerms and definitions [Go to Page]
- 3.1
- 3.2
- 3.2.1
- Figure 1 — Example of an enclosing guard totally preventing access to transmission machinery
- Figure 2 — Example of a distance guard
- 3.3.1
- 3.3.2
- Figure 4 — Example of a self-closing guard
- 3.4.1
- Figure 5 — Example of an adjustable guard for a radial or pedestal drilling machine
- automatically adjustable guard
- Figure 6 — Example of interlocking hinged guards; these enclose the dangerhazard zone when closed
- Figure 8 — Example of safeguarding of drilling machine using fixed distance guards and interlocking guards with guard locking and fixed guards
- 3.8
- guard open
- a guard is open when it is not closed
- 3.103.8
- 3.113.9
- 4 Risk assessment
- 5 PrincipalGeneral requirements for the design and construction of guards [Go to Page]
- 5.1 Machine aspects [Go to Page]
- 5.1.1 General
- 5.1.2 Access to dangerhazard 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 Explosion Potentially explosive atmosphere
- 5.2 Human aspects [Go to Page]
- 5.2.1 General
- 5.2.2 Safety distances
- 5.2.3 Control of access to the dangerhazard zone
- 5.2.4 Viewing
- 5.2.5 Ergonomic aspects
- 5.2.5.12 Size and, weight, and design
- 5.2.5.23 Operating forces
- 5.2.5.4 Power operated guards
- 5.2.6 Intended use
- 5.3 Guard design and construction aspects [Go to Page]
- 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
- 5.4 Guard construction aspects [Go to Page]
- 5.4.13.7 Sharp edges, etc.
- 5.4.23.8 Integrity of joints
- 5.4.3.9 Removal only by toolof fixed guards
- 5.4.4 Positive location of removable guards
- 5.3.10 Mounting of removable fixed guards
- 5.4.5 Positive closing of movable guards
- 5.4.6 Self closing guards
- 5.4.7.3.11 Adjustable guards
- 5.4.7.2 Manually adjustable guard
- 5.4.7.3 Automatically adjustable guard
- 5.4.83.12 Movable guards
- 5.4.93.13 Control Closed position of movable guards
- 5.3.14 Interlocking guards with a start function (control guards)
- 5.54 Selection of materialsMaterials, rigidity, and impact requirements [Go to Page]
- 5.54.1 General
- 5.54.2 Impact and ejection resistance
- 5.54.3 Rigidity
- 5.5.4.4 Secure fixing
- 5.4.5.5 Reliability of moving parts
- 5.65 Containment
- 5.76 Resistance to corrosion
- 5.87 Resistance to micro-organismsmicroorganisms
- 5.98 Non-toxicity
- 5.109 Machine viewing
- 5.1110 Transparency
- 5.12 Stroboscopic effects
- 5.11 Shadows and stroboscopic effects
- 5.1312 Electrostatic properties
- 5.13 Guards with electrically conductive parts
- 5.14 Thermal stability
- 5.15 Flammability 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 [Go to Page]
- 6.1 General
- 6.2 Combination of different guards or of guards with other devices [Go to Page]
- Figure 9 — Example 1 of combination of different guards and guards with other protective devices
- Figure 10 – Example 2 of combination of different guards and guards with other protective devices
- 6.3 Selection of guards according to the number and locationsize of the hazards
- 6.4 Selection of guards according to the nature and frequency FORof access required [Go to Page]
- 6.4.1 General
- 6.4.12 Moving transmission parts
- 6.4.23 Where access is not required during use
- 6.4.34 Where access is required during use
- 6.4.34.2 Where access is required during the working cycle
- 6.4.4.3.3 Where, due to the nature of the operation, access to the dangerhazard zone cannot be totally prohibitedprevented
- 7 Additional design and construction considerations [Go to Page]
- 7.1 Climbing
- 7.2 Retained fastenings [Go to Page]
- Figure 11 – Example of a retained fastening
- 7.3 Vibration resistance
- 7.4 Warning signs
- 7.5 Colour
- 7.6 Aesthetics
- 87 Verification of the safety requirements for guards [Go to Page]
- 87.1 General
- 8.2 Impact strength
- 8.3 Safety distances
- 8.4 Containment
- 8.5 Noise
- 8.6 Guard operating forces
- 8.7 Visibility
- 7.2 Verification and validation methods
- 7.3 Required verification and validation
- 98 Information for use [Go to Page]
- 98.1 General
- 98.2 Guard hazards
- 98.3 Installation
- 98.4 Operation
- 98.5 Removal of guards
- 98.6 Inspection and maintenance
- Annex A [Go to Page]
- (normative)
- Annex B [Go to Page]
- (normative)
- Annex A [Go to Page]
- (informative) [Go to Page]
- Figure A.1 — Example of a retained fastening using captive screw
- B.2.1 General
- B.2.2 Test equipment [Go to Page]
- B.2.2.1 General
- B.2.2.2 Projectile
- Figure B.1 — Projectile
- B.2.2.4 Supporting the guard under test
- B.2.2.5 Gun
- Figure B.2 — Equipment for projectile test
- B.2.4 Results and test report [Go to Page]
- B.2.4.1 Results
- B.2.4.2 Test report
- Annex C [Go to Page]
- (informative) [Go to Page]
- C.1 General information
- C.2 Pendulum test [Go to Page]
- C.2.1 General
- C.2.2 Test equipment [Go to Page]
- C.2.2.1 General
- Figure C.1 — Principle of pendulum test
- C.2.2.2 Test object
- C.2.3 Test impact energies
- C.2.4 Supporting the guard under test
- C.2.5 Test method [Go to Page]
- C.2.5.1 Resistance of guards against impact from outside the hazard zone
- C.2.5.2 Resistance of guards against impacts from inside the hazard zone — Hard body
- Figure C.2 — Sample of hard bodies showing impact area
- C.2.6.2 Test report
- Annex D [Go to Page]
- (informative) [Go to Page]
- Table D.1 — Relationship between International and corresponding European Standards
- Annex ZA [Go to Page]
- (informative)
- Bibliography [Go to Page]
- European Standards
- Tracked_Changes_Cover_Markup.pdf [Go to Page]
- compares BS EN ISO 14120:2015 [Go to Page]
- Test example 1
- Version_Comparison.pdf [Go to Page]
- BS EN ISO 14120:2015 to BS EN 953:1997+A1:2009
- 30263768.pdf [Go to Page]
- Contents Page
- European foreword
- Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC
- 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
- Tracked_Changes_Cover_Markup_new.pdf [Go to Page]
- compares BS EN ISO 14120:2015 [Go to Page]
- TRACKED CHANGES
- Test example 1
- Version_Comparison.pdf [Go to Page]
- BS EN ISO 14120:2015 to BS EN 953:1997+A1:2009 [Go to Page]
