- Author
-
Arvidson, M.
|
Persson, H.
- Title
- Koldioxids (CO2) paverkan pa elektronik - slackning med laga koncentrationer. [Carbon Dioxide Suppression Systems - Risk of Damage to Electrical Equipment.]
- Coporate
- Swedish National Testing and Research Inst., Boras, Sweden
- Report
-
SP Report 1993:20
1993
40 p.
- Keywords
-
carbon dioxide
|
suppression
|
electrical equipment
|
room fires
- Identifiers
- thermal shock; electrostatic effects
- Abstract
- [ABSTRACT IN ENGLISH] Discharge tests and a literature survey have been conducted to investigate the risk for damage on electrical equipment due to low temperatures and electrostatic charges when Carbon Dioxide (CO₂) fire protection systems are operated. The work was concentrated on total flooding systems. No indication of adverse effects from CO₂ on electrical equipment has been found. Fire tests in a 21,8 m³ room with a computer, electrical cables or waste paper respectively was performed to investigate the needed CO₂ concentration for extinction. At the lowest concentration tested, 26-28 vol-%, the fires in the computer and in the cables were extinguished satisfactorily. The fire in the paper reignited when the room was ventilated again.