DAT 09g

DAT 09g

DAT 09g

Product catalog summary
Overview
The VentSafe Cargo Tank Pressure Monitoring and Alarm System is designed to detect over or under pressure conditions in cargo tanks, triggering alarms to prevent deformation due to primary pressure release valve failure. It complies with SOLAS regulations and is suitable for vessels transporting flammable cargoes.

Key Features
  • Detects pressure anomalies and triggers alarms.
  • Complies with SOLAS II-2/59.1 and subsequent amendments.
  • Meets ExxonMobil MESQAC, OCIMF, and SIRE standards.
  • Cost-effective for new builds and retrofits.
  • Simple operation with marine-approved components.

Regulatory Compliance
The system adheres to SOLAS regulations requiring secondary venting means or pressure sensors for cargo tanks. It is applicable to vessels with flammable cargoes or inert gas systems.

System Components
  • PSM ict 1000 Pressure Transmitter: Durable, overload-protected, and suitable for hazardous areas with safety barriers.
  • MTU Display Unit: Located in the cargo control room, it provides monitoring and alarm status for each tank.
  • Modbus Communication: Connects up to 127 transmitters, reducing installation complexity and costs.

Functionality
Upon detecting pressure excursions, the system triggers visual and audible alarms. The MTU unit allows for alarm acknowledgment and reset.

Design and Construction
The ict 1000 transmitter features a robust ceramic capacitive measurement cell and stainless steel body, ensuring durability and reliability. It is ATEX certified for hazardous areas and approved by major classification societies.

MTU Central Monitor, Control, and Alarm Panel
The MTU is a user-friendly central unit with a 7” HMI panel, pre-configured for each installation. It displays operational status and triggers alarms, with optional relay outputs for remote alarm control.

Conclusion
The VentSafe system offers a comprehensive, compliant, and cost-effective solution for cargo tank pressure monitoring, ensuring safety and regulatory adherence in marine applications.
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Catalog excerpts

DAT 09g-1

VentSafe: Cargo Tank Pressure Monitoring and Alarm System • Detects over or under (vacuum) pressure conditions in a cargo tank and triggers an alarm to prevent deformation in case of primary pressure release valve failure Complies with SOLAS 11-2/59.1 regulations by providing an alternative to the secondary venting of cargo • Also complies with subsequent Meets the ExxonMobil MESQAC guide for affiliate vessel vetting as well as OCIMF and SIRE best practices • Cost effective to install in new builds or as a retrofit to existing ships • Simple to operate and reliable based on marine approved components Part of the ComplianceSystems product group PSM Instrumentation Ltd, Unit3 Burrell Road, Haywards Heath, West Sussex, RH16 1TW. UK Subject to change without notice

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DAT 09g-2

Cargo Tank Pressure Monitoring and Alarm System SOLAS II-2/59.1 regulation effective July 1998, and subsequent SOLAS II-2/4.5.3.2.2, II-2/11.6.3.2 and IACS UI SC 140 regulations effective July 2013, requires that a secondary means of allowing full flow of vapour, air or inert gas is provided in the event that the primary pressure relief valve arrangement fails. This ensures that the cargo tank is operated within its design limits and is not mechanically damaged by over or under (vacuum) pressure. Alternatively, and more cost effectively (especially where retrofit is required), the regulation...

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DAT 09g-3

MTU Central Monitor, Control and Alarm Panel The MTU is a powerful yet simple to use central monitoring, control and alarm unit. Designed, constructed and approved for marine applications such as inert gas tank blanket pressure measurement Comprising a 7” IP65 HMI unit panel mounted into an optional epoxy coated steel enclosure it is suitable for marine applications and installations. The MTU is supplied pre-configured according each installation with the tank details and descriptions, as well as the four alarm setpoints required by the regulations. Input is a Modbus loop is used for connection...

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DAT 09g-4

Typical system components MTU Central Monitor, Control and Alarm Panel mounted in cargo control room Optional relay outputs for remote mounted audible and visual alarms RFM-ISR zener barrier module Required for hazardous area installation Ict 1000 pressure transmitters Mounted on top of tank or vent pipe Ship’s tanks or gas vent pipes © PSM INSTRUMENTATION LTD Data Sheet Ref: DAT 09g 28/02/2013 PSM Instrumentation Ltd, Unit 3 Burrell Road, Haywards Heath, West Sussex, RH16 1TW. UK Subject to change without notice

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.