The published reference
The supplied manufacturer brochure describes the development of a dual-mode (swimming and crawling) underwater inspection robot for China Yangtze Power, for inspection of submerged hydropower structures.
The task
Reach submerged dam and hydropower structures through flowing water, hold position on the surface and record defects for assessment.
The system to verify
A-400 dual-mode vehicle with cameras, positioning and protective systems as described by the manufacturer. The supplied sensors, adhesion method and data outputs need to be checked against the original project record.
The reported outcome
For this development project, the manufacturer reports switching from a swimming approach to stable crawling on the structure surface, and high-definition inspection and assessment of submerged structures. These are manufacturer statements about a development project, not guaranteed specifications. The manufacturer’s timeline: purchase contract in September 2021, delivery in June 2022, and in-water testing with operator training in July 2022.
Evidence for a comparable project
- Structure type, surface material and fouling condition
- Flow conditions at the inspected surface during operation
- Defect types detected, positioning method and data samples
- Launch and recovery arrangement, operating time and acceptance record
What this reference establishes
The brochure identifies a relevant manufacturer application. It offers a starting point for asking about the technical approach and original evidence.
The available summary does not establish performance limits, defect-recognition accuracy or suitability for every dam or intake. Transfer to a new site requires the underlying project records and a site review.
Read the application guide