What is EN ISO 14151-2:2021?

EN ISO 14151-2:2021 is a technical standard that provides guidelines for the design and implementation of safety-related control systems on machinery. This standard, titled "Safety of machinery - Prevention of unexpected start-up," aims to ensure the safe operation of machinery by preventing accidental or unintended starting. In this article, we will explore the key aspects of EN ISO 14151-2:2021 and its importance in promoting workplace safety.

Scope and Purpose

The scope of EN ISO 14151-2:2021 encompasses a wide range of machinery used in various industrial sectors. It applies to both new machinery and existing machines that undergo modifications or upgrades. The standard focuses on the prevention of unexpected start-up, which can occur during maintenance, repair, cleaning, or other activities carried out on machinery. Its purpose is to minimize the risk of accidents caused by unintentional activation of machinery and safeguard the well-being of operators and maintenance personnel.

Key Requirements

EN ISO 14151-2:2021 lays down specific requirements that must be met while designing safety-related control systems. These requirements aim to eliminate or reduce hazards associated with unexpected start-up and ensure that machinery can only be started under authorized conditions. The standard emphasizes the use of reliable and fail-safe methods to control energy sources, such as electrical, hydraulic, pneumatic, or mechanical. It also provides guidance on the selection of appropriate safeguarding measures, such as interlocks, lockout devices, and emergency stop systems.

Benefits and Implementation

Implementing EN ISO 14151-2:2021 has numerous benefits for both manufacturers and end-users of machinery. Adhering to this standard helps manufacturers design safer machines that comply with legal requirements and meet customer expectations. For end-users, it ensures a higher level of safety when operating or maintaining machinery, reducing the risk of accidents and injuries. Compliance with EN ISO 14151-2:2021 also strengthens an organization's overall safety culture and demonstrates a commitment to employee well-being.