ISO 4309:2017
Cranes — Wire ropes — Care and maintenance, inspection and discard
Cranes — Wire ropes — Care and maintenance, inspection and discard
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 65
- Дата публикации:
- 30 ноября 2017 г.
- Издание:
- ISO IS 4309 edition 5 version 1
- ICS:
- 53.020.30
ISO 4309:2017 establishes general principles for the care and maintenance, and inspection and discard of steel wire ropes used on cranes and hoists. In addition to guidance on storage, handling, installation and maintenance, this document provides discard criteria for those running ropes which are subjected to multi-layer spooling, where both field experience and testing demonstrate that deterioration is significantly greater at the crossover zones on the drum than at any other section of rope in the system. It also provides more realistic discard criteria covering decreases in rope diameter and corrosion, and gives a method for assessing the combined effect of deterioration at any position in the rope. ISO 4309:2017 is applicable to those ropes used on the following types of cranes, the majority of which are defined in ISO 4306‑1: a) cable and portal cable cranes; b) cantilever cranes (pillar jib, wall or walking); c) deck cranes; d) derrick and guy derrick cranes; e) derrick cranes with rigid bracing; f) floating cranes; g) mobile cranes; h) overhead travelling cranes; i) portal or semi-portal bridge cranes; j) portal or semi-portal cranes; k) railway cranes; l) tower cranes; m) offshore cranes, i.e. cranes mounted on a fixed structure supported by the sea bed or on a floating unit supported by buoyancy forces. ISO 4309:2017 applies to rope on cranes, winches and hoists used for hook, grabbing, magnet, ladle, excavator or stacking duties, whether operated manually, electrically or hydraulically. It also applies to rope used on hoists and hoist blocks. NOTE In view of the fact that the exclusive use of synthetic sheaves or metal sheaves incorporating synthetic linings is not recommended when single-layer spooling at the drum, due to the inevitability of wire breaks occurring internally in large numbers before there is any visible evidence of any wire breaks or signs of substantial wear on the periphery of the rope, no discard criteria are given for this combination.
Abstract
Overview
ISO 4309:2017 (identical to ISO 4309:2017) sets out general principles for the care, maintenance, inspection and discard of steel wire ropes used on cranes and hoists. The standard covers storage, handling, installation, running‑in, maintenance and both daily and periodic inspection procedures. It also provides discard criteria that reflect real‑world deterioration modes such as multi‑layer spooling crossover wear, diameter loss and corrosion, and introduces magnetic rope testing (MRT) for internal condition assessment.
Key topics and technical requirements
- Care and maintenance: Guidance on offloading, storing, installing and running‑in new ropes to maximize service life and safety.
- Inspection regimes: Differentiates daily visual inspections and periodic inspections, and specifies the extent of inspections including around terminations and related crane components.
- Discard criteria: Practical criteria for removing ropes from service based on:
- Visible broken wires (with procedures and rope category considerations)
- Decrease in rope diameter and local diameter loss
- Corrosion and combined deterioration effects
- Deformation and damage (kinks, basket deformation, protrusions, heat/electrical damage)
- Magnetic Rope Test (MRT): Introduced in this edition as a method and discard‑criteria aid for detecting internal wire breaks and corrosion; guidance on when and how to use MRT and how to combine MRT results with visual inspection.
- Special cases: Discard guidance for ropes subject to multi‑layer spooling (notably crossover zone deterioration). Note: exclusive use of synthetic sheaves for single‑layer spooling is not recommended and no discard criteria are provided for that combination.
- Assessment tools: Methods for combined effect assessment of rope condition (informative annexes) and examples of inspection records.
Practical applications
- Ensures safe, auditable rope management on cranes, winches and hoists used for hooks, grabs, magnets, ladles, excavators and stacking duties.
- Helps maintenance teams identify when to repair, monitor or permanently discard ropes to prevent failures.
- Supports asset management programs by standardizing inspection records, MRT reporting and discard decision‑making.
- Informs procurement and installation best practices to extend rope life and reduce downtime.
Who should use this standard
- Crane and hoist operators, maintenance engineers and safety officers
- Lifting equipment inspectors and third‑party certifiers
- OEMs, rope manufacturers and facility asset managers
- Regulatory bodies and plant managers responsible for lifting safety
Related standards
- ISO 4306‑1 (crane types and vocabulary)
- ISO 4301‑1 (crane classification)
- ISO 17893 (steel wire ropes - vocabulary and classification)
Keywords: ISO 4309:2017, ISO 4309:2017, cranes wire ropes, care and maintenance, inspection and discard, magnetic rope test (MRT), discard criteria, multi-layer spooling, rope inspection.
Технические детали
- Технический комитет
- ISO/TC 96/SC 3 - Selection of ropes
- SKU
- ISO 4309:2017
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