Global acoustic leak Detector (alD)For subsea structures

wide area COVeraGeThe aLd provides leak detection within a radius of up to 500 meters from the sensor. Typically one aLd is used for a 4 slot template.

easy insTaLLaTiOninstallation is performed by rOV. Power and communication is via wet-mateable connector. interfaces with all common subsea control modules.

nO MainTenanCe requireMenTno maintenance is required during the 25 year design life of the aLd. Func-tional testing is recommended every second year.

FeaTuresnaxys™ GLObaL aCOusTiC Leak deTeCTOr (aLd) FOr subsea sTruCTures

Left: Graphical User Interface, FMC Pazflor project, with simulated leak detected in red sector.

below: ALD installed on the roof of a Template

The Naxys™ ALD is an ultra sensitive instrument that detects both liquid and gas leaks to the subsea environment.

The instrument comprises a 3-dimensional array of hydrophones and a sophisticated data processing and communication unit. Advanced signal processing avoids generation of false alarms and allows identification of leaks.

The ALD has a built in self diagnostic system and a rugged design that imposes minimum restrictionsto the installation operation.

Acoustic Leak Detector (ALD).

sPeCiFiCaTiOns

Detection capability

• Hydrocarbons (gas and liquid)

• Hydraulic fluid

• MEG

• Produced water

• Redundant sensor options

Size and weight

• Diameter 1 m

• Height 1.75 m

• Weight 200 – 250 kg in air

Material

• Titanium

• Galvanic insulated from CP-system

Qualification

• ISO 13628-6

• Operational depth 2 000 meters

• Design life 25 years

Communication

• Ethernet TCP/IP

• Modbus/TCP

• Modbus RS-422 (IWIS)

• Modbus RTU RS-485

• CAN-bus RS-232/RS-422

• Dual (redundant) options

Power

• 18 V DC to 30 V DC, 20 W

• ODI or Tronic wet mateable connector

• Dual (redundant) options

Accessories

• Docking base

• Simulator

• Topside service computer Subsea data processing module.

Hydrophones qualified for 25 years operation.

Naxys supplies the oil and gas industry with high-tech. leak & condition monitoring systems for subsea installations.  We focus on robust sensor design and non-intrusive technology. This minimizes interference with the subseasystem being monitored and does not impose any increasein failure modes. The monitoring systems are qualified for 25 years operation and no periodic maintenanceis required. Our products are easily deployed and recovered by ROV.

Several contract awards have confirmed our world-leading position with regard to technology and quality.

www.naxys.no

NS-EN ISO 9001:2008

Naxys AS Hegrenesveien 425042 BERGENT: + 47 55 36 48 80E: naxys-sales@naxys.no

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