ISO 14122-3-2016 PDF

Full title and description

St ISO 14122-3-2016 — Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders and guard-rails. This second edition (published June 2016) specifies minimum safety requirements for non‑powered stairs, stepladders and guard‑rails that form part of a stationary machine, including non‑powered adjustable or movable parts (for example foldable or slidable elements).

Abstract

ISO 14122-3:2016 gives requirements for non‑powered stairs, stepladders and guard‑rails used as permanent means of access to machinery. It defines terms, dimensional and construction requirements, strength and stability tests, handrail and guarding provisions, and constraints on applicability (for example it is not applicable to powered means of access such as lifts or escalators, nor to machinery manufactured before publication). The part is intended to be used together with ISO 14122‑1.

General information

• Status: Published (second edition, current following 2021 confirmation review).
• Publication date: June 2016 (2016-06).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.110 (Safety of machinery).
• Edition / version: Edition 2, 2016.
• Number of pages: 22 pages.

Key bibliographic and lifecycle information (status, edition, page count and confirmation review) is recorded in the ISO bibliographic entry for ISO 14122-3:2016.

Scope

This part of ISO 14122 applies to fixed, non‑powered means of access that are part of machinery (stairs, stepladders and guard‑rails), and to non‑powered adjustable or movable elements of those means of access. It may also be applied to building or civil‑construction elements where their main function is to provide access to the machine. It does not apply to powered means of access (lifts/escalators) and is not intended to be applied retroactively to machinery manufactured before its date of publication.

Key topics and requirements

• Definitions and terminology for stairs, steps, nosing, pitch line, handrail, knee rail, toe‑plate, landing, flight and related elements to ensure consistent design language.
• Dimensional design requirements (angles of pitch, rise and going/tread dimensions, headroom, widths and clearances) consistent with ergonomic and safe passage criteria.
• Construction, materials and attachment requirements to ensure strength, durability and avoidance of new hazards from moving parts or edges.
• Load and strength testing of steps and landings (minimum test/load conditions and deflection limits) to verify performance under foreseeable pedestrian and loaded conditions.
• Handrail, guard‑rail and toe‑board requirements (heights, continuous gripping, openings limits) to protect against falls and falling objects.
• Requirements for gates, access openings, stairs with movable or folding elements and means to prevent unintentional displacement.
• Instruction, marking and information requirements aimed at safe use and maintenance of permanent access means.

Technical details and test values are provided in the standard text (including mandatory tests and minimum load values for steps and landings).

Typical use and users

Used by machine designers, manufacturers, factory and equipment safety engineers, plant maintainers, conformity assessment bodies and occupational safety regulators to design, verify and confirm safe permanent access to machines. Also used by standards committees and consultants when specifying access arrangements in machine‑installation and integration projects.

Related standards

ISO 14122‑3 is part of the ISO 14122 series (Parts 1–4: Part 1 — Choice of fixed means of access and general requirements; Part 2 — Working platforms and walkways; Part 3 — Stairs, stepladders and guard‑rails; Part 4 — Fixed ladders). It is intended to be used together with ISO 14122‑1 and with general machinery safety standards such as ISO 12100 (risk assessment and risk reduction).

Keywords

permanent means of access, stairs, stepladders, guard‑rails, handrail, toe‑board, landing, step dimensions, load testing, machinery safety, ISO 14122

FAQ

Q: What is this standard?

A: ISO 14122-3:2016 is an international standard specifying safety requirements for non‑powered stairs, stepladders and guard‑rails that are part of machinery, covering dimensions, construction, tests and guarding provisions.

Q: What does it cover?

A: It covers fixed and non‑powered adjustable access elements (stairs, step ladders, guard‑rails, gates, foldable/slidable elements), their definitions, dimensional requirements, construction and materials, load and strength tests, handrail and guard requirements, and information for safe use. It excludes powered access systems and machinery made before publication.

Q: Who typically uses it?

A: Machine designers and manufacturers, plant safety and maintenance personnel, conformity assessors, standards bodies and safety consultants use it to design and verify safe permanent access to machinery.

Q: Is it current or superseded?

A: ISO 14122-3:2016 is the second edition (published June 2016). The ISO bibliographic record shows the document was reviewed and confirmed in 2021 and remains the current edition (the 2001 edition was withdrawn and replaced by the 2016 edition).

Q: Is it part of a series?

A: Yes — it is Part 3 of the ISO 14122 series on permanent means of access to machinery (Parts 1–4). It is intended to be used in conjunction with ISO 14122‑1 and other parts of the series.

Q: What are the key keywords?

A: Stairs, stepladders, guard‑rails, permanent means of access, handrail, landing, step dimensions, load testing, machine access, ISO 14122.