Unitor sample extraction smoke detection systems are designed to provide early detection of fires in cargo holds. The system can be used for continuous smoke monitoring in up to 48 cargo holds simultaneously.
Air samples are drawn from the cargo holds via a network of pipes and automatically monitored for smoke contamination. To minimise installation costs, the same pipe work as used for the CO2 fire extinguishing system is normally utilised.
The system complies with the requirements of SOLAS chapter II-2, FSS Code Chp 10 and is safeguarded against explosion according to IEC 79 and EN 50 020.
Features and benefits
- Complies with SOLAS Chapter 11-2 and the FSS Code Chapter10
- Type approved by all major Classification Societies including ABS, GL, LR, BN and DnV
- Compact and modular design saves cost
- Utilises existing CO2 pipework
- Automatic air sampling and monitoring of up to 48 cargo holds
- Repeater panels allow for monitoring from key locations on the vessel
- Completely automated and self-adjusting
- Explosion protected to IEC79 and EN 50 020
- One button control for simple testing and resetting
- Fans switch automatically every 24 hours to give even load on motors
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Technical Design
A typical smoke detection system consists of a smoke detection panel, repeater panels on the bridge or the fire control room (for remote display of alarms and warnings) and a fan unit for drawing the air from the cargo holds.
In Unitor Smoke Detection and Sampling Systems, the smoke sampling is conducted using the same pipes as for the CO2 system, using 3 way valves to determine system operation.
Air samples from each detection line flow through the detector panel, which has a built-in smoke detector assigned to the line. A pressure switch for monitoring the airflow is also attached to the detector box.
The smoke detection panel contains the control module, the power supply and a galvanic isolator for safeguarding against explosion. The panel also houses all appropriate terminals for external feeds.
The detectors automatically monitor the air for smoke. As the smoke increases, a fire warning is set off, alerting the ships crew to a potential fire hazard. Extension panels can be added for connecting additional detector lines. The connection between the panels utilises a 4-wire cable to minimise installation costs.