bulk carrier safety against water ingress
Approved Water Ingress Detection Alarm & Monitoring  System 
for Bulk Carrier safety

 

In Accordance with Solas Chapter XII Regulation 12 and IACS unified requirement UR S24
IMO DE 46/18/1 & DE 46/18/2

Approval Certification ~ operation ~ alarms ~ compliance ~ support ~ mechanical ~ further comprehensive details

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Benefits

Water ingress alarm for cargo holds insensitive to product type or build – up.

 

Constant self-checking of detection sensors and ‘live zero’ alarm 
signal confirms system operational health.

 

Simple menu driven/push button operation with full functional checks 
available at any time from the bridge (holds empty or filled.)

 

Approved Water Ingress Alarm System for bulk carrier safey
water detection hydrostatic sensorBulksafe’ water Ingress detection monitoring & alarm System draws upon almost 30 years of PSM’s experience in supplying monitoring and alarm systems in shipboard liquid levels to provide a robust, reliable, simple to install and operate solution for this critical water ingress detection in cargo application for bulk carrier safety.
 

To cover all applications a choice of sensors fittings are offered. All  are solid state devices with no float or other mechanisms to fail, or in-built filters requiring regular cleaning, they provide a 4-20mA  2 wire output which gives 4mA when the cargo hold is empty. This ‘live zero’ signal provides an immediate indication of sensor health, a feature not available to simple switch devices. Any water ingress which is detected while the tanker is underway will immediately cause this output signal to rise triggering an alarm condition.  

Bulksafe systems require only one sensor per hold to detect both pre and main alarm conditions, sensor and system operation may be checked at any time irrespective of hold status by using a simple test mechanism built into the deck termination enclosure. No additional compressed air or water services are needed to effect this test.  

 

Installation / retrofit is simple, the sensor is supplied with the required length of cable and simply mounts within a shipyard supplied pipe, clamped to the inside of the tank, or externally flange mounted. Where holds have a lower stool and or a keel duct alternative installations are possible PSM provide a full range of support fittings and tank penetrations to suit any requirement and will be happy to supply suggested installation drawings.alarm system LCD display

Operation

Simplicity of operation is a key feature. The user is guided by a full menu structure and all messages and prompts are provided in plain English on a backlit LCD display. Dedicated function buttons provide immediate ‘shortcuts’ to auto-calibrate and system tests, and dedicated visual annunciations provide immediate identification of ‘all clear’, “Alarm, active”, “system fault” and “power-fail” conditions.

Alarms

Water ingress detection in cargo alarm conditions also trigger an internal relay which may be used to drive external remote mounted audible and visual annunciations. If required repeater displays are available for remote locations These communicate with the primary display via a 2 wire RS485 serial link and provides an overview of the entire system status. This remote display can also be used to acknowledge alarm conditions. Multiple remote displays can be connected if required.Back to top

Bulksafe system schematic

Complianceback to top

In accordance with the Regulations individual sensors may be disabled if a tank is to be used for Ballast on a particular voyage.  Upon emptying of the tank the alarm monitoring is automatically re-enabled.

In the event of a primary power source fail, the central monitor will automatically switch to the ships emergency back-up supply and dedicated buttons and menu routines provide a complete operational health check without the need to enter the hold.

Support

PSM will be pleased to discuss your particular application requirements and provide a detailed proposal.

The system is designed for simple installation & commissioning by Shipyard personnel, but if required PSM can offer full Installation & Commissioning services.

Mechanical

Central Monitor

 
Model: PSM Series IWT 4200
Enclosure: Surface mount epoxy coated mild steel to IP65
Primary supply: 110 /220 V AC or 24 V DC (to be specified at time of order)
Back-up supply: In the event of a primary supply failure the system will automatically switch to operate on the Ships emergency supply.
Dedicated lamps indicate supply integrity or failure.
Display: Integral 8 line x 30 character LCD with switchable backlight
Operation: Menu driven via integral keypad.
Inputs: Up to 40 No 4-20mA signals from water ingress sensors.

 

Bulksafe Sensor

 
PSM Series 260
Signal output: Variable 4-20mA dependant upon water level
Construction: Cast 316 Stainless Steel body
Protection: Fully submersible to IP 68
Cable: Fully potted-in 4 core cable with Marine grade Hytrel LSOH sheathing Supplied to required length
Remote amplifier module to IP 67 located in the Deck termination enclosure
Mounting: Suspended within stilling pipe or pole mounted via integral BSP thread. Optionally clamped to hold wall.
Type tested in accordance with the relevant conditions of IEC 60092-504 for robustness and suitability, and to IP68 in accordance with IEC60529.
Certified I.S. to relevant ATEX standards for use in hazardous zones
 
Intrinsically Safe Barrier

Each 4-20mA loop is protected using a Zener Barrier.

Additionally, the MODBUS loop on RF systems is protected by a galvanic isolator.

Deck Penetration Gland

Body material: carbon steel (stainless steel available as an option)

 Deck Termination Enclosure

Carbon steel construction. With integral test point in the case of Hydrostatic sensors.

Filter Assemblies

With fixing kits suitable for pipe end or stool wall mounting

Remote sounder

Type 1:  for inside use
Type 2:  Deck Klaxon (Intrinsically Safe)

Remote beacon

Type 1: For inside use
Type 2: Deck use- rotating beacon (Intrinsically Safe)

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[ISO9000 2000 accredited company]  
PSM Instrumentation Ltd - the home of process control instrumentationPSM Instrumentation Limited Burrell Road, Haywards Heath, W Sussex RH16 1TW 
Tel +44(0)1444 410040  Fax +44(0)1444 410121 

Bulksafe water ingress detection alarm system

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Last modified: June 18, 2009