BS ISO 9557:2024
Ships and marine technology. Wire rope lifting platform for inspection
- Standard No.
- BS ISO 9557:2024
- Release Date
- 2024
- Published By
- British Standards Institution (BSI) GB / BSI
- Latest
- BS ISO 9557:2024
- Introduction
Standard Overview and Technical Background
ISO 9557:2024, as an important standard in the field of ship and marine technology, specifies the technical requirements of wire rope lifting inspection platform for the first time. This standard originates from the mandatory provisions of IMO MSC.158(78) resolution on the inspection channel of hidden areas of ships, aiming to solve the problems of low efficiency and high risk of traditional scaffolding.
Core parameters and classification system
Classification dimensions Technical parameters Standard requirements Drive type Power source configuration Manual/pneumatic/electric three-choice Rated load Double platform load-bearing capacity 240kg (uniform distribution + eccentricity test) Platform size Working area 600×1200mm (≥0.25m² per person)
Analysis of key design specifications
5.1 Main platform structure
- Guardrail height≥1000mm, intermediate crossbar spacing ≤500mm
- Maximum deflection of base plate ≤6mm (under rated load)
- Preferred lightweight materials such as aluminum alloy
5.2 Safety device
Anti-fall device needs to be automatically locked when the speed exceeds the standard. A typical case shows that it needs to withstand a static load of 120kg for 15 minutes without slipping. The braking system must meet the following requirements:
- Braking distance after power failure ≤100mm
- Equipped with manual slow descent function
In-depth interpretation of test methods
Test type Conditions Qualification standard No-load operation 6-9m/min speed 3 lifts (single distance ≥5m) Rated load 240kg uniformly distributed + eccentric 3 tests under each working condition Braking performance 0.5m hovering 15 minutes without slipping
Recommendations for the implementation of the standard
- Material verification: Material certificates are required when purchasing aluminum alloy parts
- Test preparation: It is recommended to configure a 240kg standard test weight set
- Document management: Keep the factory inspection report for at least 10 years
- Maintenance points: Check the wear of the wire rope diameter every month (should be <7% of the nominal diameter)
Technology evolution analysis
Compared with the previous generation of temporary inspection platforms, the main innovations of this standard are:
- Introduction of the quick release brake technical indicator
- Clearly define the ratio of pulley diameter to wire rope diameter ≥20
- Add eccentric load test requirements
BS ISO 9557:2024 history
- 2024 BS ISO 9557:2024 Ships and marine technology. Wire rope lifting platform for inspection
