Testing the sealing system
The focus of the test is the sealing system around the penetration — not the pipe or cable itself.
The sealing must prevent:
- Flames from passing through the penetration
- Excessive temperature rise on the unexposed side
- Loss of integrity in the fire-rated division
The fire performance is evaluated based on the complete penetration configuration and how the sealing system behaves during fire exposure.
Defining test scope and documentation
Penetration systems are tested in fire-rated bulkheads or decks exposed to standardised fire conditions according to the FTP Code.
At DBI, temperatures around the penetration are measured while specialists observe whether flames or hot gases pass through the sealing system during the test. A single test setup may contain multiple penetration configurations tested simultaneously.
Each penetration is evaluated individually.
DBI helps manufacturers define relevant test scope and documentation for maritime penetration systems by:
- Planning efficient test programmes
- Identifying relevant worst-case configurations
- Documenting fire test results in accredited test reports
Technical assessments
DBI also makes technical assessments based on the fire test results.
This can be used when manufacturers need to document variations of a tested penetration system without repeating full-scale testing for every configuration.The assessment is based on practical evaluation of how installation details, insulation layouts or penetration arrangements influence the fire performance.
Technical assessments are regularly used as supporting documentation in certification processes and dialogue with classification societies.
