Substation Reliability Experts, Inc

Cable Joint Wraps

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Problem:
Cable joints and splicing are a prime location for fires to begin.

SRE Solution:

Cable Joint Wraps protect underlying cables in the event of fire exposure. This standard is used to apply a protective wrap to power cable joints and power cables in the vicinity of joints. The intent of this procedure is to reduce the effects of a joint or splice failure upon power distribution cables and to reduce the spread of fire after a “flash” event. The EP3990 wrap material is not designed to contain a joint failure. The intent of the wrap is to mitigate the impact of flame, hot gasses and molten materials upon surrounding power cables.

Before After

Cable connections (joints/splices) have the potential of overheating or exploding resulting in a chain reaction of fire damage to adjacent control cables. This event may lead to other power and control circuit failures. The Cable Joint Wrap solution involves wrapping the joints to contain fire explosions from spreading, ultimately preventing additional substation damage.

SRE Advantages:

Ability to remove fire wraps to update joints and re-route cables.
Before and after matrix aid in proper system selection. Also provides visual to compare completed work insuring correct installation.
Design drawings are assembled allowing each step of the process is able to be understood by a novice installer. Following each step in sequence insures a fire protection installation that will function in a fire/smoke event.
Ability for corrective maintenance to be performed 10, 20, even 30 years from now
System designs are installed by SRE’s trained and certified installers.
Ability to install while the unit is live.
Emit extremely low levels of smoke/toxic gas when subjected to fire
Flexible yet durable material
Joints closely located to each other may be wrapped as a group, or individually wrapped.

Material(s) Description:
EP-3990 Wrap