Two full-scale fire experiments on PVC cables used in
nuclear power plants were carried out, one with cables in
vertical position and one with cables in horizontal
position. The vertical cable bundle, 3 m high, 300 mm
wide and 30 mm thick, was attached to a steel cable
ladder. The vertical bundle experiment was carried out in
nearly free space with three walls near the cable ladder
guiding air flow in order to stabilise flames.
The horizontal cable experiment was carried out in a
small room with five cable bundles attached to steel
cable ladders. Three of the 2 m long cable bundles were
located in an array, equally spaced above each other near
one long side of the room and two correspondingly near
the opposite long side.
The vertical cable bundle was ignited with a small
propane gas burner beneath the lower edge of the bundle.
The horizontal cable bundles were ignited with a small
propane burner beneath the lowest bundle in an array of
Rate of heat release by means of oxygen consumption
calorimetry, mass change, C02, CO and smoke production
rate and gas, wall and cable surface temperatures were
measured as a function of time, as well as time to
sprinkler operation and failure of test voltage in
cables. Additionally, the minimum rate of heat release
needed to ignite the bundle was determined.
This paper concentrates on describing and recording the
experimental set-up and the data obtained.
|Place of Publication||Espoo|
|Publisher||VTT Technical Research Centre of Finland|
|Number of pages||108|
|Publication status||Published - 1997|
|MoE publication type||Not Eligible|
- fire tests
- fire prevention
- burning velocity