ISO 14120:2015 Safety Protection Device Requirements Explained
ISO 14120:2015 "Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards" is a key technical specification in the crane industry. As an international standard governing the design and selection of guards in machinery safety, it applies to both fixed and movable guards on equipment such as cranes. The standard defines requirements for safety distances, opening sizes, and interlocking systems.
It provides a unified technical basis for design personnel, inspection bodies, and users. Kelude strictly adheres to the technical requirements of this standard throughout its product development and manufacturing processes, ensuring compliance and reliability of its equipment.
Scope of Application and Positioning
ISO 14120:2015 specifies the technical requirements and safety indicators related to crane machinery safety. It applies to all types of lifting appliances with a rated lifting capacity above 0.5t.
Core Technical Parameter Framework
Under the technical provisions of ISO 14120:2015, the design and manufacturing of machinery safety guards must satisfy a stringent set of parameter requirements. The parameter cards below summarize the standard's core technical indicators:
Comparative Analysis of Key Technical Parameters
| Item | technical requirements | Description |
|---|---|---|
| safety distance | Per ISO 13857/EN 349 | Upper Limb≥850mm/Lower Limb≥200mm |
| Opening Restriction | Finger≤6mm/Palm≤20mm | Andsafety distance Used in Conjunction With |
| Guard Color | RAL 1003Yellow | Yellow Paint for Movable Guards |
| Interlocking Device | Limit switch+mechanical lock Fixed Dualredundancy | Power Cut-off When Opened+Locking |
| Fixing Guard | Removal Requires Tools | Bolt Or Special Wrench Fixing |
| Warning sign | Yellow-Black Stripe Angle45° | Width40mm Alternating |
Inspection Requirements and Intervals
| Item | technical requirements | Description |
|---|---|---|
| Guard Integrity | Deformation/Looseness/Corrosion | Monthly+Intact and Functional |
| Interlock Function | Power Cut-off When Door Open | Monthly+Fixed Dualredundancy Testing |
| safety distance | Measure Opening to Hazard Zone | Annual+≥ISO 13857 |
| Clear Marking | Yellow-Black Paint/Warning Sign | Annual+Repaint When Faded |
Safe Operation and Management Requirements
Under ISO 14120:2015, safe operation and routine management play a critical role in workplace safety. The standard places strong emphasis on operator qualification and training, requiring that all operators complete specialized training and obtain the necessary certifications before being permitted to work.
FAQ: Guarding and Safety Compliance
Q: What are the safety distance requirements for guards under ISO 14120?
A: Upper limbs: ≥850 mm; lower limbs: ≥200 mm. For mesh guards: finger protection requires openings ≤6 mm with a safety distance of ≥5 mm; hand protection requires openings ≤20 mm with a safety distance of ≥120 mm.
Q: What are the technical requirements for interlocking movable guards?
A: Opening the guard must cut off all power sources and prevent machine start-up. A redundant design is required, combining a limit switch with a mechanical locking mechanism.
Q: What color coding is specified for guards?
A: Movable guards must be painted yellow (RAL 1003). Rotating parts must feature alternating yellow-and-black stripes at a 45° angle with a stripe width of 40 mm.
Q: How should guards be inspected during maintenance?
A: Monthly inspections must verify guard integrity and test interlock functionality. Annual inspections must confirm safety distances and legibility of warning markings.
Kelude — specializing in crane design and manufacturing, fully compliant with the ISO 14120:2015 standard system, offering lifecycle service from concept design and manufacturing and installation to after-sales maintenance.
