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Written by Dominic Vieregge

Machine Safety in Mechanical Engineering: How to Avoid Dangerous Gaps

Machine safety protects employees, reduces liability risks, and supports CE marking compliance. Learn about the requirements of the new EU Machinery Regulation and how to identify and eliminate safety gaps before they become costly problems.

Machine Safety in Mechanical Engineering: How to Avoid Dangerous Gaps

Introduction

The requirements for machine safety continue to increase. New technologies, connected systems, and Industry 4.0 create enormous opportunities. At the same time, they introduce new risks that companies cannot afford to ignore.

Even minor safety gaps can have serious consequences. Production downtime, workplace injuries, or issues related to compliance and certification can result in significant costs and legal exposure.

Manufacturers in the mechanical engineering sector, in particular, face the challenge of balancing technological innovation with safety requirements. Companies that establish the right processes early on create the foundation for safe products and sustainable business success.

What Is Machine Safety?

Machine safety encompasses all technical, organizational, and design-related measures aimed at minimizing risks to people, the environment, and assets throughout the entire lifecycle of a machine.

The objective is to ensure the safe operation of machinery and compliance with essential safety requirements during development, operation, and maintenance.

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Why Machine Safety Is Essential for Businesses

Machine safety goes far beyond compliance with legal requirements. It helps companies protect their employees, investments, and reputation. Effective machine safety has a direct impact on reducing downtime, minimizing liability risks, and supporting product safety throughout the entire product lifecycle.

In addition, customers, regulatory authorities, and certification bodies increasingly expect proof that equipment complies with the current state of the art. Companies that address these requirements proactively can gain a significant competitive advantage.

What Regulations Currently Apply?

From the Machinery Directive to the Machinery Regulation

For many years, the Machinery Directive provided the legal framework for placing machinery on the European market. With the introduction of the Machinery Regulation, a fundamental shift is taking place. The new regulation replaces the previous directive and establishes uniform requirements across the European Union without the need for national implementation.

An Overview of the New EU Machinery Regulation

The new EU Machinery Regulation introduces numerous changes. Particular attention is given to digital technologies, connected systems, and artificial intelligence. It defines new health and safety requirements for manufacturers and other economic operators involved in the machinery supply chain.

Special focus is placed on the placement of machinery on the market and on determining when a substantial modification results in an operator being legally considered the manufacturer.

A transition period of 42 months has been established. Companies should use this time to adapt their processes and ensure compliance at an early stage. The Machinery Regulation aims to ensure that machinery continues to meet current requirements while reducing trade barriers across the European market.

Risk Assessment as the Foundation of Machine Safety

A risk assessment forms the basis of every safe machine design. DIN EN ISO 12100 provides a structured methodology for identifying, evaluating, and reducing hazards. At the same time, ISO 12100 is recognized as the fundamental standard for machine safety.

The standard defines a three-step risk reduction process:

  1. Inherently safe design measures
  2. Technical protective measures
  3. User information and warnings

DIN EN ISO 12100 helps companies systematically identify risks and implement appropriate measures to reduce them.

Implementing Technical Protective Measures Effectively

Once risks have been identified and evaluated, suitable protective measures must be implemented. Examples include fixed or movable guards, interlocking devices, and safety-related control functions. The specific type of protective device required depends on the results of the risk assessment and the hazards involved. The ultimate goal is always to develop a safe machine that maintains a high level of safety during normal operation and throughout its intended use.

Funktionale Sicherheit in der Praxis

Functional Safety in Practice

Functional safety deals with safety-related control functions. It concerns systems that detect hazardous conditions and react automatically. Examples include emergency stop functions, light curtains, or safe speed monitoring systems. Functional safety is becoming increasingly important, especially in modern machinery and equipment.

Important Standards for Functional Safety

Several standards play a central role in this field. ISO 13849 and EN ISO 13849 define requirements for safety-related parts of control systems. In addition, IEC 62061 exists and is based on international IEC standards. These standards support companies in designing safety functions in a verifiable and safety-related manner.

Which Standards Should Companies Know?

The Role of A, B, and C Standards

Anyone involved in machine safety will encounter numerous standards. The most important international standards can be divided into three groups:

  • Basic safety standards (A standards)
  • B standards
  • C standards

While basic safety standards define general requirements, specialized B standards address a specific safety aspect. C standards contain product-specific requirements and detailed safety requirements for specific types of machinery.

Applying Standards and Directives in Practice

Standards and directives support companies in implementing legal requirements. These are often European standards that reflect the current state of the art.

Directives, regulations, and recommendations together form the regulatory framework. Many regulations and recommendations in the form of harmonized standards facilitate the demonstration of conformity. Recommendations in the form of standards help companies develop products in compliance with directives and reliably meet the essential safety requirements.

Maschinensicherheit: Typische Sicherheitslücken

Common Safety Gaps

Errors in Design and Documentation

Many problems arise during the development phase. Incomplete design documentation, missing evidence, or outdated records can create significant risks. The operating instructions also play a crucial role. The same applies to digital operating instructions, which will receive greater attention in the future.

For CE marking, all required documentation must be complete and properly maintained. This includes, among other things, the EC Declaration of Conformity and all relevant technical documentation. For this reason, every design engineer should consider documentation requirements from the very beginning of the development process.

Risks in Hydraulic and Pneumatic Systems

Special attention is required for systems that are operated hydraulically or pneumatically. These systems often involve additional risks caused by pressure loss, leaks, or uncontrolled movements. Machine and plant manufacturers must therefore carefully consider product-specific requirements as well as applicable DIN and EN standards.

So unterstützt digitales Datenmanagement die Maschinensicherheit

How Digital Data Management Supports Machine Safety

Why Information Must Be Centrally Available

Machine safety does not end with the development phase. In daily operations, documents, inspection reports, certificates, and approvals must be available at all times. Especially during modifications or audits, decentralized storage quickly leads to problems.

Companies therefore need a central source of information that clearly documents compliance with the current state of the art. Work instructions, technical evidence, and safety-related documents should always be version-controlled and available in an audit-proof manner.

How PIM and DAM Simplify Compliance

Many manufacturers still manage technical documentation, certificates, images, and product information across network drives or multiple systems. This often leads to information silos, version conflicts, and unnecessary risks.

A centralized platform such as 4ALLPORTAL can help address these challenges. By combining Digital Asset Management (DAM) and Product Information Management (PIM), the platform enables the centralized management of product information, documents, and digital assets within a single source of truth.

As a result, companies maintain full visibility over approvals, technical documentation, and CE-relevant content. At the same time, data quality improves and collaboration between engineering, quality assurance, and sales teams becomes more efficient.

Key Takeaways

  • Machine safety begins during the development phase, not after a machine has been completed.
  • The new Machinery Regulation replaces the previous Machinery Directive and introduces updated requirements for modern technologies and connected systems.
  • A structured risk assessment conducted by machine safety experts forms the foundation of safe and compliant products.
  • Functional safety is governed by standards such as ISO 13849 and IEC 62061, which define requirements for safety-related control systems.
  • Centralized data platforms help companies efficiently manage documentation, compliance requirements, and CE-related records.

Frequently Asked Questions (FAQ)

Machine safety encompasses all measures designed to reduce or eliminate hazards associated with machinery. This includes design-related, technical, and organizational solutions that help protect operators, maintenance personnel, and other individuals throughout a machine’s lifecycle.

The previous Machinery Directive is being replaced by a regulation that applies directly across all EU member states. The new requirements place greater emphasis on digitalization, cybersecurity, connected systems, and emerging technologies used in modern machinery.

A risk assessment identifies potential hazards and defines appropriate measures to reduce or eliminate risks. It is a fundamental requirement for conformity assessment and serves as the basis for obtaining CE marking.

Functional safety refers to the reliable execution of safety-related functions within a control system. Its purpose is to automatically detect hazardous conditions and initiate appropriate actions to prevent accidents or reduce risks.

Among the most important standards are DIN EN ISO 12100, ISO 13849, and IEC 62061. Together, they provide the foundation for designing, evaluating, and validating safe machinery and safety-related control systems.

Conclusion

Machine safety is not a single project step but an ongoing process. Companies must continuously address technological developments, evolving regulatory requirements, and increasing safety expectations.

Organizations that assess risks early, consistently apply relevant standards, and centrally manage their documentation create the foundation for safe and compliant products.

Particularly in light of the new EU regulations and increasing digitalization, it is worth reviewing existing processes and aligning them with future requirements. Companies that invest today can reduce risks, improve compliance, and establish the foundation for maximum machine safety.

Dominic Vieregge

Director Service Operations

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