IEEE 1844:2015 pdf free download

IEEE 1844:2015 pdf free download

IEEE 1844:2015 pdf free download.IEEE Standard Test Procedure for Determining Circuit Integrity Performance of Fire Resistive Cables in Nuclear Facilities.
1) Cable raceway
2) Supports
3) Splices.junction boxes
4) Connectors
5) Clamps
Only those support features representative of the field application where a fire resistive rating is required needs to be included in the cable test assembly.
The components of the cable test assembly constitute the “qualified assembly” provided that the acceptance criteria of this standard are met. The ‘qualified assembly” used for the tests shall he constructed with materials and configurations representative of in plant conditions and utilize rated components where possible.
The fire resistive cable is not to he closer than 305 mm (12.0 in) from the furnace edge.
The minimum distance between the point of entrance and point ofexit of the cable through the furnace shall be 3.0111 (9.X II).
The minimum cable length (in the furnace) tested should be greater than 3.05 m (10.0 fi). The cables shall be terminated at a maximum cable length of 3.05 m (10.0 It) beyond the exit point of the cable from the furnace exterior (sur1ice of uncxposcd side)
The minimum bend radius of the sample shall not exceed the manutlicturer’s specified minimum bend radius fur the sample tested. II a minimum bend radius other than the manufactLlrer’s specified mmimum bend radius is used, then any rating assigned to the cable test assembly shall be limited to the smallest bend radius tested.
All cable raceways shall be grounded to the same electrical ground as the circuit integrity monitoring equipment.
— Cable test assembly shall be tested in the vertical and horiiontal orientation. Figure 6 shows an example of vertical and horizonatal cable test assembly orientations.
A minimum of two identical cable test assemblies of the same design shall be tested and meet the conditions of acceptance to be qualified as described in (lause 6 of this standard. If a single cable test assembly fails to meet the conditions of acceptance. an additional cable test assembly may be tested.
For testing in cable trays. the cable sample shall be in physical contact with the tray.
Unless the rating is specified for a specific firestop construction, the firestop system for the opening in the structure made for passage of the cable shall be constructed using materials and techniques that provide an effective fire barrier without influencing the performance of the cable as a result of degradation. The fire stop system shall also, to the extent possible, prevent or limit the passage of air into the furnace which could cool the cable test assembly.