Use of Fireproof Modules for Cable Trays

Fire-rated modules, also known as fire-blocking sections or firestop packs, are used to provide fireproof protection for cable trays.

Overview

Fireproof modules for cable trays are designed to prevent the spread of fire along cable installations and ensure the safety of electrical systems. They are commonly referred to as fire-rated modules, fire-blocking sections, fire sections, or fire partitions depending on the application and industry standards. These modules are installed at intervals along cable trays or at penetration points through walls and slabs to isolate potential fire zones.

Types and MaterialsFire-rated Modules: These are modular units made from multiple organic substances that expand when exposed to fire, releasing non-toxic gases. They are suitable for temporary or permanent sealing of cable bundles and trays, and can accommodate metal pipelines with or without insulation. They are moisture-resistant, corrosion-resistant, and designed to withstand rodent damage.

Fire-blocking Sections / Fire Partitions: These are installed along cable trays to isolate fires and prevent propagation. Materials used include fireproof boards, fireproof coatings, fireproof bags, and fireproof mud. Each material has advantages such as ease of installation, good fire resistance, and durability, while some may require maintenance or occupy more space.

Firestop Packs and Sealants: For cable penetrations through walls or slabs, firestop packs, firestop mastic, and mineral wool are used to seal gaps tightly, ensuring a reliable fire barrier. These can be combined with backing plates for larger openings.

Applications

Industrial and power facilities: To protect cable systems in substations, power plants, and control rooms. High-rise and public buildings: To prevent fire spread in sensitive areas like hospitals, airports, and production facilities. Temporary or permanent installations: Fire-rated modules can be adapted for both short-term and long-term fireproofing needs.

Installation Considerations

Modules should be aligned and packed tightly to avoid gaps. Gaps between modules and cables are often sealed with expansion-type fire-resistant sealants. For large openings, a fire-resistant backing plate may be installed before sealing.

Identification stickers can be added for maintenance and inspection purposes. In summary, fire-rated modules, fire-blocking sections, and firestop packs are the primary fireproof solutions for cable trays, providing effective fire isolation and compliance with safety standards in industrial and commercial installations.