This article is about Installation and Commissioning Cable Tray Firewall Barriers for commercial buildings, plants and refinery projects as per international codes and standards. This article explains to cable tray sealing system, cable tray fire barrier, cable tray sleeve in same context.
Cable Tray Firewall Barriers General Requirements
| Electrical materials shall be new and unused. |
| Electrical materials shall be in accordance with the Saudi Aramco-approved project-specific design drawings, diagrams, schedules, lists, databases, and associated documents. |
| Electrical materials shall be free of damage. |
| Electrical materials shall conform to all applicable requirements, standards, and specifications prior to release to be used as part of the work. |
| Electrical materials shall be identified by using tags, stamps, color coding, stencils or labels. The location and method of identification shall not affect the function or quality of the materials. |
| Electrical materials shall be traceable from the manufacturer and supplier through delivery, storage, fabrication, erection, installation, repair, modification and use. |
Cable Tray Firewall Barriers Installation Procedure and Requirements
| Electrical installations in hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially increased. (NEC 300.21) |
| Openings around electrical penetrations through fire-resistant-rated walls, partitions, floors, or ceilings shall be firestopped using approved methods to maintain the fire resistance rating. (NEC 300.21) |
| Firestops in substation buildings shall have a minimum 2 hour fire rating. |
| Materials used in firestop systems are to be installed in accordance with the manufacturer’s instructions provided with the materials. (NEC 300.21) |
| The side of the building adjacent to the transformer yard shall have a solid wall (fire-rating the same as the building wall) that separates the space from the transformer yard. |
International Codes & Standards
| 1. NFPA 70 – National Electrical Code (NEC) |
| 2. SAES-P-104 – Wiring Methods and Materials. |
| 3. SAES-P-119 – Onshore Substations. |
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