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Electrical & Electronics/Marine Automation/
Cargo Pump Temperature Monitoring System (VALCOM, VL 29)
 
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  Short Description
  Exceeds the latest IMO resolution MSC.99 (73) (SOLAS Chapter II-2/4.5.10) Cargo pump room provisions and comply with the OCIMF recommendation
at no additional cost.

 
 
 
 
  Detail Description
  Exceeds the latest IMO resolution MSC.99 (73) (SOLAS Chapter II-2/4.5.10) Cargo pump room provisions and comply with the OCIMF recommendation
at no additional cost.

Design Features

Simple installation
The main central cabinet is installed in the Cargo Control Room. It comprises of a main RTU module linked to the expansion I/O, gateway and receiver modules with just a 10cm local bus cable. These modules are compact and sturdy in construction and are designed for mounting on standard din rail.
In pumproom, all the temperature sensors are connected to the certified Ex I/O modules and the signal is routed back to the CCR via a twisted pair 0.75mm2 cable.
Similarly in the engine room, the temperature sensors are connected to a slave module with I/Os and the signal is routed back to the CCR also via a twisted pair 0.75mm2 cable.
One Operator dialogue terminal is located in the Cargo Control room to display the temperature reading. This panel can be console mounted or housed inside a cabinet.

Low cabling cost
Unlike most other systems, which require laying of multi-core cables, cables trays, hot work, etc from the pumproom to the COC. Valcom VL29 requires only two twisted pair 0.75mm2 cable to be laid to the COC for remote indication and alarm. The twisted pair cable can be laid onto the existing cable trays. It uses RS 485 standard and is widely recognized for its noise immunity.

Plug & Play features
The plug and play features enable replacement or upgrading of I/O modules without disturbing the system wiring. Expansion to include more I/Os is done easily by plugging on additional expansion modules. These modules are built with intelligent features, such as Hot-swappable plug and play with auto configuration.

Quick faults diagnosis & Maintenance
All modules have individual LEDs to show the input/output status. LEDs are provided for quick fault diagnosis of system and I/O. Replacement of expansion module is simple. It does not require programming or setting of dipswitches or links.

2 set point per sensor
OCIMF recommends for prelimary and primary alarm for each measuring point, Valcom VL29 includes as a standard, the primary alarm for cargo pump shutdown.

Reference

The following is a summary of the decisions made by IMO's Maritime Safety Committee (MSC)

Cargo Pump Room Monitoring. MSC-99 (73) issued a safety circular stipulating measures to take to prevent explosions in oil tanker cargo pump rooms. Included are provisions to provide for: (1) temperature sensing to pump shafting, bearings and casings; (2) an interlock for ventilation prior to activating the pump room's main lighting; (3) the continuous monitoring of hydrocarbon gas concentration with audible and visual alarms when concentration exceeds a preset level which is not to exceed 10% of the lower flammable limit; and (4) bilge level monitoring and alarm.

For existing ships, the requirements of temperature sensing devices and bilge level monitoring devices are to be complied with by the first scheduled dry-docking after 1 July 2002 but not later than 1 July 2005.

Other Products

VDR, Voyage Data Recorder
ECDIS, Electronic Chart Display System
VALCOM VL28, Cargo Tank Pressure Monitoring System


 
 
 
 
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