GB24418-2020
Aids to navigation on the bridge over maritime navigable waters, China
中国海区可航行水域桥梁助航标志
GB 24418-2020 is a current mandatory Chinese national standard for Aids to navigation on the bridge over maritime navigable waters, China. It appears in the Machinery compliance cluster with a product safety focus and has an implementation date of Dec 1, 2021.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard specifies the types, functions, shapes, dimensions, colors, light characteristics, and naming rules for aids to navigation on bridges. It is mandatory for all bridges (including railways, roads, pipelines, and aqueducts) over maritime navigable waters, ports, and sea-entering estuaries in China. It is not applicable to inland river bridges.
Technical requirements
The standard outlines requirements for visual aids, radio aids, and audible aids. For visual aids, it defines specifications for best point of passage marks, left/right passage marks, prohibited navigation marks, and bridge pier warning marks, including their colors, shapes, and light rhythms. Radio aids include Radar beacons (Racons) and AIS beacons, while audible aids involve fog signals that must not interfere with bridge traffic. The standard also details setting rules, such as determining the best point of passage based on clearance height/width and water depth, and specific light ranges for different vessel tonnages. Manufacturers must ensure all dimensions and light characteristics strictly follow the specified tables.
Testing methods
The standard references visual inspection for dimensions and color patterns of daymarks as per Appendix B. Light characteristic verification involves checking the rhythm, period, and color of the navigation lights. Range testing ensures lights meet the required nautical mile visibility for the designated vessel class.
FAQs
What products are regulated under GB 24418-2020?
It regulates aids to navigation installed on bridges over maritime navigable waters in China, including visual marks, radio beacons, and audible signals.
Are there any updates from the previous version of GB 24418-2020?
Yes, it replaces GB 24418-2009, adding the 'best point of passage' mark, modifying requirements for radio and audible aids, and updating daymark dimension specifications.
Does GB 24418-2020 specify different requirements based on vessel size?
Yes, the standard specifies different minimum daymark dimensions and light ranges based on the navigable capacity of the bridge span, categorizing them for under 1000 tons, 1000-5000 tons, and over 5000 tons.
The summary above provides a high-level overview of GB 24418-2020. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 24418-2020 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- R63
- ICS
- 03.220.40
- Competent department
- Ministry of Transport
- Technical committee
- Ministry of Transport
Relationships
Replaces:GB 24418-2009