The standard SN EN ISO 14119:2025, titled "Safety of machinery - Interlocking devices associated with guards - Principles for design and selection (ISO 14119:2024)", provides essential guidelines for the design and selection of interlocking devices that are linked to guards in machinery. This standard is applicable to all machinery that employs interlocking devices, regardless of the energy source utilized in their operation.

=== SECTION 1 ===

What SN EN ISO 14119:2025 covers

SN EN ISO 14119:2025 outlines principles for the design and selection of interlocking devices associated with guards meant to enhance safety in machinery operations. It focuses on ensuring that these devices are effective in preventing unauthorized access to hazardous areas. The standard includes guidance on designing parts of guards that actuate interlocking devices and addresses trapped key interlocking devices and systems specifically tailored for machinery applications. Notably, it does not encompass the design requirements of the guards themselves, which are addressed in ISO 14120, nor does it delve into the specifics of signal processing from interlocking devices, which is covered by ISO 14118, ISO 13849-1, and IEC 62061.

=== SECTION 2 ===

Who needs to comply with SN EN ISO 14119:2025

The target audience for SN EN ISO 14119:2025 includes manufacturers, machine designers, safety engineers, and regulatory compliance professionals operating within the Environment, Health & Safety (EHS) sector. Organizations of all sizes that design, manufacture, or operate machinery equipped with interlocking devices must adhere to the standard to ensure the safety and reliability of their machinery. This standard is particularly relevant for industries such as manufacturing, construction, and any sector involving heavy machinery where mechanical hazards are a concern.

=== SECTION 3 ===

Key requirements

• Design principles: Establishes guidelines for the effective design of interlocking devices to ensure they function as intended.
• Selection criteria: Outlines criteria for choosing appropriate interlocking devices based on specific machinery applications and hazard assessments.
• Application with guards: Provides instructions on how interlocking devices should be integrated with guards to maximize safety.
• Mechanical hazards: Identifies measures to mitigate risks associated with mechanical hazards through proper interlocking device design.
• Key transfer systems: Discusses requirements for systems that utilize trapped keys to prevent accidental machine operation.
• Positioning and fastening: Specifies requirements for the correct positioning and secure fastening of interlocking devices to enhance their effectiveness.

These requirements are typically audited through safety assessments and compliance checks to ensure adherence to the standard's guidelines.

=== SECTION 4 ===

How to implement SN EN ISO 14119:2025

Implementing SN EN ISO 14119:2025 involves several critical steps to ensure compliance and enhance safety protocols. Initially, a gap analysis should be conducted to identify current practices against the standard's requirements. Following this, comprehensive documentation should be developed to outline processes and procedures that align with the standard. Training sessions for relevant personnel are essential to ensure understanding and proper application of the guidelines. An internal audit should then be performed to assess the implementation of the standard within the organization. Finally, a certification audit can be pursued to validate compliance with SN EN ISO 14119:2025, facilitating adherence to safety regulations and enhancing organizational reputation.

=== SECTION 5 ===

Related standards

• ISO 14120: Specifies general requirements for the design and construction of guards primarily aimed at protecting personnel from mechanical hazards.
• ISO 14118: Addresses the processing of signals from interlocking devices to prevent unintended machine start-up.
• ISO 13849-1: Provides guidelines for the safety-related parts of control systems, including the reliability of interlocking devices.
• IEC 62061: Focuses on functional safety in electrical, electronic, and programmable electronic safety-related systems, complementing the mechanical aspects covered by ISO 14119.

=== SECTION 6 ===

Why SN EN ISO 14119:2025 matters

SN EN ISO 14119:2025 is critical for organizations aiming to enhance machinery safety and comply with regulatory standards. By implementing the principles outlined in this standard, companies can gain a competitive advantage, ensure legal compliance, expand market access, and build customer trust through demonstrated commitment to safety. Explore training and purchase options below to fully leverage the benefits of adhering to this important standard.