ISO 9557:2024
(Main)Ships and marine technology - Wire rope lifting platform for inspection
Ships and marine technology - Wire rope lifting platform for inspection
This document specifies the classification, design requirements and test methods of wire rope lifting platform for inspection (hereinafter called as “wire lift platform” throughout this document) as an alternative means of access for close-up inspections of under-deck structures of ships and offshore structures.
Titre manque
General Information
- Status
- Published
- Publication Date
- 24-Jan-2024
- Technical Committee
- ISO/TC 8/SC 8 - Ship design
- Drafting Committee
- ISO/TC 8/SC 8 - Ship design
- Current Stage
- 6060 - International Standard published
- Start Date
- 25-Jan-2024
- Due Date
- 09-Dec-2024
- Completion Date
- 25-Jan-2024
Overview - ISO 9557:2024 (Wire rope lifting platform for inspection)
ISO 9557:2024 specifies the classification, design requirements and test methods for wire rope lifting platforms (referred to as “wire lift platform”) used as an alternative means of access for close-up inspections of under‑deck structures on ships and offshore structures. The standard addresses mechanical design, safety systems, operational testing and required documentation to ensure safe, repeatable inspection access.
Key topics and technical requirements
- Scope & classification
- Applies to portable/movable wire rope lifting platforms for under‑deck inspection.
- Drive types allowed: manual, pneumatic, electrical.
- Rated working load
- Standard rated working load: 240 kg (designed for two persons).
- Main platform structure
- Double‑man platform dimensions: 600 mm × 1 200 mm.
- Maximum bottom deflection under rated load: ≤ 6 mm.
- Guardrail minimum height: 1 000 mm; intermediate crossbar and max gaps specified (max clear spacing 100 mm, free spaces between rails ≤ 500 mm).
- Baseboard min height 100 mm; bottom plate non‑skid and must not allow a 15 mm ball to fall through.
- Inner clear width ≥ 500 mm; operating area per person ≥ 0.25 m².
- Hoisting and fastening
- Sheave-to-wire‑rope diameter ratio: ≥ 20.
- Hoisting brake torque: > 1.5 × rated hoisting torque.
- Fastening devices must withstand platform deadweight, rated load and rope weight; hull contact should be lined (e.g., rubber) to avoid paint damage.
- Safety devices
- Brake must stop platform within ≤ 100 mm braking distance.
- Overload protection and upper stroke limiter required.
- Fall arrest device: automatic locking when falling speed exceeds set limit; rated ≥ 120 kg per person and able to be manually hoisted/lowered. Must hold 120 kg for 15 minutes without slip.
- Test methods
- Prototype and production tests include no‑load and loaded cycles (three lifts/lowerings, stroke ≥ 5 m), eccentric load tests, brake slippage (15 min), emergency stop (measure slip on power loss) and emergency lowering (manual lowering ≥ 2 m).
- Marking & documentation
- Platform must carry manufacturer, model, technical parameters, serial/date. Delivery documents include operation/maintenance instructions, manufacturer certificate, spare parts list.
Applications and who uses this standard
ISO 9557:2024 is used by:
- Shipbuilders and ship designers for specifying and integrating inspection access equipment.
- Manufacturers of wire rope lifting platforms for design validation and type approval.
- Classification societies, flag administrations and surveyors for certification and acceptance.
- Ship operators, maintenance crews and offshore inspection contractors for safe inspection procedures and procurement.
- Safety officers and procurement teams requiring compliance with marine inspection access rules.
Related standards
- IMO Resolution MSC.158(78) - technical provisions for means of access for inspections (referenced in the bibliography).
- Prepared under ISO/TC 8 (Ships and marine technology), useful when coordinating with other marine design and safety standards.
Frequently Asked Questions
ISO 9557:2024 is a standard published by the International Organization for Standardization (ISO). Its full title is "Ships and marine technology - Wire rope lifting platform for inspection". This standard covers: This document specifies the classification, design requirements and test methods of wire rope lifting platform for inspection (hereinafter called as “wire lift platform” throughout this document) as an alternative means of access for close-up inspections of under-deck structures of ships and offshore structures.
This document specifies the classification, design requirements and test methods of wire rope lifting platform for inspection (hereinafter called as “wire lift platform” throughout this document) as an alternative means of access for close-up inspections of under-deck structures of ships and offshore structures.
ISO 9557:2024 is classified under the following ICS (International Classification for Standards) categories: 47.020.40 - Lifting and cargo handling equipment; 47.020.50 - Deck equipment and installations. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 9557:2024 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
International
Standard
ISO 9557
First edition
Ships and marine technology —
2024-01
Wire rope lifting platform for
inspection
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 2
4.1 Drive type .2
4.2 Rated working load .2
5 Design requirements . 2
5.1 General requirements .2
5.2 Safety requirements .3
5.3 Main platform structure .3
5.4 Hoisting device .3
5.5 Fastening device .4
5.6 Fall arrest device .4
6 Test methods . 4
6.1 Prototype test .4
6.2 Operation under no load .4
6.3 Operation under rated load .4
6.4 Brake performance test .4
6.4.1 Slippage measurement .4
6.4.2 Emergency stop test .4
6.4.3 Emergency lowering test .5
7 Designation . 5
8 Documentation . 5
Bibliography . 6
iii
Foreword
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This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee
SC 8, Ship design.
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iv
International Standard ISO 9557:2024(en)
Ships and marine technology — Wire rope lifting platform for
inspection
1 Scope
This document specifies the classification, design requirements and t
...
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