ISO 14118-2017 PDF

Full title and description

ISO 14118:2017 — Safety of machinery — Prevention of unexpected start-up. This International Standard specifies design measures and provisions aimed at preventing unexpected machine start-up so that people can intervene safely in danger zones. It covers prevention of start-up from power supplies, stored energy and external influences, and identifies available means to prevent unexpected start-up without prescribing performance levels for control-system safety parts.

Abstract

ISO 14118:2017 provides requirements for designed-in measures to prevent unexpected machine start-up (including from electrical, hydraulic, pneumatic power supplies, stored energy such as gravity or springs, and external influences such as wind). The standard is intended to support safe human interventions in danger zones; it does not itself specify performance levels or safety integrity levels for safety-related control components, nor does it mandate specific measures for particular machines (those are determined by risk assessment or by type‑C standards).

General information

• Status: Published (current edition confirmed).
• Publication date: December 2017.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.110 (Safety of machinery).
• Edition / version: Edition 2 (ISO 14118:2017).
• Number of pages: 11 pages (ISO published PDF length).

(General information above based on the ISO bibliographic record for ISO 14118:2017.)

Scope

ISO 14118:2017 applies to designed-in means intended to prevent unexpected start-up of machinery so that safe human intervention in danger zones is possible. It applies to unexpected start-up originating from any energy source (electrical, hydraulic, pneumatic, stored mechanical energy, external influences, etc.). The standard identifies available means of prevention but does not set performance levels (PL) or safety integrity levels (SIL) for safety-related control parts; selection and specification of measures for particular machines should follow a risk assessment or applicable type‑C standards.

Key topics and requirements

• Definitions and terminology related to unexpected start-up and human interventions in danger zones.
• Design measures to prevent unexpected start-up from all types of energy sources (isolation, locking, discharge of stored energy, guarding against external influences).
• Requirements for control of energy sources and mechanical restraints to prevent involuntary movement during interventions.
• Identification of available preventive measures (mechanical, electrical, procedural) while not prescribing PL/SIL values.
• Guidance on when a type‑C standard or risk assessment should define machine-specific prevention measures.
• Information, marking and instructions necessary for safe intervention and for maintenance activities.

(Summary based on ISO 14118:2017 content and scope statements.)

Typical use and users

Used by machine designers, OEMs, safety engineers, installation and maintenance personnel, conformity assessors and testing laboratories. It is applied during machine design, risk assessment and documentation to define and implement measures that prevent unexpected start-up during maintenance, adjustment and other human interventions. Regulators and certification bodies may reference it when assessing machine safety against recognized good practice.

Related standards

Standards commonly used alongside ISO 14118 include ISO 12100 (general principles for risk assessment and risk reduction), ISO 13849 (safety-related parts of control systems), IEC 62061 (safety of machinery — functional safety of safety-related electrical, electronic and programmable electronic control systems), ISO 14119 (interlocking devices associated with guards), ISO 14120 (guards — general requirements for the design and construction of fixed and movable guards) and IEC 60204-1 (electrical equipment of machines). ISO 14118 is published identically as EN ISO 14118:2018 in the European system and has superseded earlier EN/ISO documents addressing unexpected start-up.

Keywords

prevention of unexpected start-up, machine safety, isolation of energy, stored energy, safe intervention, risk assessment, guards, interlocks, maintenance safety.

FAQ

Q: What is this standard?

A: ISO 14118:2017 is an International Standard titled "Safety of machinery — Prevention of unexpected start-up" that provides requirements and guidance on designed-in measures to prevent machines from starting unexpectedly during human interventions.

Q: What does it cover?

A: It covers measures to prevent unexpected start-up from any energy source (electrical, hydraulic, pneumatic, stored mechanical energy, external influences) and identifies prevention means (mechanical, electrical, procedural). It does not set performance levels or safety integrity levels for control-system components and does not prescribe machine-specific solutions — those come from risk assessment or type‑C standards.

Q: Who typically uses it?

A: Machine designers, OEMs, safety and maintenance personnel, risk assessors, conformity assessors and test laboratories use ISO 14118 when designing, modifying or assessing machinery to ensure safe intervention procedures and to reduce the risk of unexpected start-up.

Q: Is it current or superseded?

A: The 2017 edition (Edition 2) is the current ISO edition published December 2017; it replaced ISO 14118:2000. The text is published as ISO 14118:2017 and is implemented in regional/adopted forms such as EN ISO 14118:2018. Users should check their national standards body for any more recent confirmations or revisions.

Q: Is it part of a series?

A: It is part of the machinery safety family of standards and is commonly used together with series standards on risk assessment and safety-related control systems (for example ISO 12100, ISO 13849, IEC 62061) and with standards on guards and interlocking (ISO 14119, ISO 14120).

Q: What are the key keywords?

A: Prevention of unexpected start-up; machine safety; isolation; stored energy; maintenance safety; risk reduction; guards; interlocks; safe human intervention.