Why this chapter exists
An unsealed or incorrectly sealed penetration can create life-safety and compliance problems far beyond the network.
See the physical work before reading the details
Original Netcomtech training illustration. Product-specific termination geometry varies, so use the component manufacturer's instruction sheet on site.
13.1 Identify rated barriers before drilling
Do not assume every wall is the same. Confirm the barrier construction and rating from project/building information. Coordinate with the responsible firestop professional where required.
13.2 Use a tested/approved system
Firestop systems are designed and tested for specific wall/floor assemblies, opening sizes and penetrants. Generic expanding foam is not automatically a compliant firestop system.
Use manufacturer/system documentation that matches the actual penetration.
13.3 Plan for cable changes
Frequently changed telecommunications penetrations may use listed sleeves or re-enterable systems where appropriate. Future cable additions must not destroy the firestop system.
13.4 Inspect and document
Photograph the opening, installed firestop and identification label where project procedures require it. Record the system reference and location so later technicians know what may be changed.
Hilti's firestop resources emphasize inspection-ready documentation and approved system details.
Workshop exercise
Build a sample of this installation method on a training bench. Photograph the preparation before termination, the finished termination and the test result. Explain what would cause you to reject your own work.
Acceptance checklist
- The component matches the cable construction and category.
- The manufacturer's installation method was followed.
- No conductor, jacket, screen or fibre damage is visible.
- Pair twist, bend radius and strain relief are preserved.
- The correct test model and limit were used.
- The cable ID matches the drawing and test report.
Technical references
Manufacturer instructions and the project standard always override generic training examples.