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Fähren und RoRo-Schiffe

Drenching Fire Protection Systems on Ro-Ro

Under the SOLAS regulations, all passenger vessels require to have drenching systems by 2010. The drencher room is where the valves for isolating zones are located. The drencher pump is generally in another position - usually not in the engine room. The pump is started either locally, from the drencher room, or in some cases from the bridge. However, the valves are generally manually operated. SIRON have carried out Dry Deluge Testing to numerous drencher systems on Ro-Ro vessels across the world. In cases of badly corroded or blocked pipe SIRON can offer a descaling and corrosion inhibition treatment that works out far more commercially viable than traditional pipe replacement options, due to it being less time consuming and labour intensive, as it uses the existing pipework and can be carried out with the pipe in position.

Ferry fire protection systems use seawater as a medium to extinguish fires by means of an onboard fire pump. In a real emergency then using seawater is a very effective and efficient means of fighting a fire. However, using seawater during routine annual wet function testing of the fire protection systems will over time cause the system distribution pipe work to corrode. The corrosion builds up and will become detached, falling into the flow path of the firewater. This will ultimately cause blockages at the deluge nozzles and when the corrosion gets bad enough, it can cause blockages to the actual pipe work itself. Even with proper clean up and maintenance requirements met, salt water, will also cause corrosion to the vessel infrastructure and deck.

The ability to use vapor instead of salt water for at least some of the required annual sprinkler tests will considerably extend the life of a vessel, the onboard equipment and deluge piping by reducing the spray of corrosive seawater.

Similar systems are already being used in various locales with similar special deluge fire protection systems such as nuclear power stations, offshore oil rigs and other waste treatment and refinery operations.

Siron Dry Deluge Testing uses a non-toxic, environmentally friendly vapor which is pumped through the system downstream of the deluge valve. This eliminates the requirement to utilize water as a testing medium for routine testing. By implementing a Dry Deluge Testing protocol entire fire protection systems can be tested from the deluge valves to the most remote nozzle. Dry Deluge Testing can detect blocked or partially blocked nozzles, blocked or partially blocked pipe work and also damaged deluge nozzles. Dry Deluge Testing meets NFPA, NORSOK, UK HSE testing criteria and has been 3rd party independently attested for use by Bureau Veritas. SIRON Dry Deluge Testing has been accepted as a recognized method of testing in the United States by the US Coast Guard where clients can extend periods between wet deluge testing.

Rauch tuts auch: WSF testet wasserfreie Sprinklerprüfung

Durch heftige oder fehlende Rauchentwicklung kommt die Betriebsfeuerwehr des Fährenbetreibers Washington State Ferries Bränden auf die Spur.

Zum Artikel auf Bain Bridge Review

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