
Acoustic Leak Monitor
Co.L.Mar’s patent-pending Acoustic Leak Monitor (ALM) leverages the company’s cutting-edge Acoustic Leak Detector® (ALD) technology to identify fluid leaks within marine structures in precise and reliable manner.
Co.L.Mar is a specialist provider of acoustic subsea leak detection equipment and noise assessment services for underwater applications.
Co.L.Mar is a specialist provider of acoustic subsea leak detection equipment and noise assessment services for underwater applications.
The company has been operating in the marine industry since 1982 and is experienced in acoustic engineering, and geophysical investigations. Co.L.Mar is certified ISO 9000 – 2008.
Co.L.Mar. has released an acoustic subsea leak detection system ALD® (acoustic leak detector) which is able to locate very small leaks on the sea line even in extremely hard environmental conditions. The system and the relative service have been developed for many years and an international patent has been obtained.
It is currently one of the fastest, most accurate and reliable method for sea line leak inspection, especially when an emergency occurs. We are an international leader in this specialist area thanks to our decades of experience and history of delivering proven leak detection solutions.
In the many offshore inspection projects we have worked on worldwide, we have been able to detect leaks as small as 0.2lt/minute.
The ALD® underwater pipeline leak detection system features an underwater sensor that collects acoustic data as it scans the pipeline. The acoustic data is transferred online to an onboard receiver, then to a PC where is analysed, displayed and recorded by a proprietary software.
Compared with other leak detection techniques, ALD has the following advantages:
During years of development, different underwater leak detection and inspection techniques have been defined:
During hydrotest of subsea installation a leak contingency plan has to be put in place. This traditionally consists in injecting fluorescine or other kind of dye then proceeding with a visual inspection if required.
But in this case, very often the visual inspection fails because leaks on new installations are typically very small (FJ solder crack or leaking flange) and spotting any sign of dye became impossible. Not to mention if visibility is poor or some current or burial is present. As a consequence, we are often called out on a very urgent base after the failure of the hydrotest of the traditional visual inspection.
For this reason, many clients contract us to standby on-site during any hydrotest so that, with a small cost they can have the best leak detection service guaranteed in case of need.
Also dyes are pollutant and in many area of the world are interdicted, while ALD has zero environmental impact.
So we can provide a more effective and environmental-friendly leak contingency plan during pre-commissioning.
On the base of the experience gained in subsea leak inspection we have recently developed a system for permanent monitoring of the most critical areas of subsea installation: manifolds, wellhead, valves, etc.
The system is composed by one of more intelligent sensors to be installed subsea and of a surface station for settings and alarms generation. The subsea units are designed for 25-years life expectance with no maintenance and an operating depth of 2,500m.
Co.L.Mar offers underwater noise assessment services that are backed up by our proprietary acoustic equipment and software. We design and build in-house our own acquisition equipment, and have the ability to customise and enhance existing technology for specialised operations.
We are experienced in assessing the acoustic impact of a wide range of man-made structures, including:
Our equipment can be rapidly deployed on small support vessels by our acoustic engineers. Once at the assessment site, we take water column temperature and salinity measurements. This data helps us to position the hydrophones at the correct depth for assessment.
Co.L.Mar’s patent-pending Acoustic Leak Monitor (ALM) leverages the company’s cutting-edge Acoustic Leak Detector® (ALD) technology to identify fluid leaks within marine structures in precise and reliable manner.
Co.L.Mar’s DNV GL–certified Acoustic Leak Detector® (ALD) is an innovative solution designed to accurately and efficiently detect leaks in a wide variety of marine environments.
Co.L.Mar has been a leading provider of subsea leak inspection services for almost two decades, using an innovative acoustic leak detection (ALD) system that is continuously being upgraded to incorporate the latest research and technologies.
During last November, CO.L.MAR. has been present in two very important events.
Co.L.Mar discusses the techniques available for subsea inspection.
Co.L.Mar's La Spezia site features with a cutting-edge, 8m-deep indoor testing pool equipped with a 4t crane and acoustic calibration facilities.
In 2015, n°3 pipeline integrity inspection campaigns has been completed using the Saaberthooth AUV equipped with Colmar ALD sensor.
In July, CO.L.MAR. took part to an important project, by carrying out inspections of subsea pipes in the Mediterranean Sea.
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Zohr Gas field is located within the 3,752km² Shorouk Block, within the Egyptian Exclusive Economic Zone (EEZ), in the Mediterranean Sea.
Mafumeira Sul Project is the second-phase development of the Mafumeira Field located in Block 0, approximately 24km (15 miles) offshore Cabinda province, Angola, at a water depth of 60m.
Discovered in July 2000, Kashagan was described as the largest field found in the past 30 years, the largest outside of the Middle East, with a projected output close to that of the Ghawar field in Saudi Arabia.
The Siakap North-Petai (SNP) field is located in block K on the west coast of Sabah in Malaysia.
The Al Wasit Gas Program includes the development of Arabiyah and Hasbah gas fields located offshore Saudi Arabia in the Arabian Gulf. The project is being developed by Saudi Aramco and is scheduled to be commissioned in 2014.
The Liwan 3-1 gas field sits in licence block 29/26 in the South China Sea, 350km south-east of Hong Kong in the Pearl River Mouth Basin.
On the 14th of June 2021, Colmar has completed the acquisition of the Acoustic Calibration Pool facility.
30 June 2021Co.L.Mar is pleased to announce that its subsea acoustic leak detector (ALD®) system received formal certification from DNV GL in December 2017.
26 February 2018Colmar delivers the first ALD-AUV version to a major oil company.
16 November 2016One of our ALD® teams was recently called out in the Middle East for a leak inspection on new subsea installation, including a 16in line and a number of flanges protected by shorouds.
27 June 2016CO.L.MAR. exhibits at oceans15, in Genova, Italy, from Monday 18 to Thursday 21 May 2015.
14 April 2015After winning an international bid, acoustic subsea leak detection equipment provider Co.L.Mar has been awarded a two-year frame agreement contract with Saipem Spa for the provision of subsea leak inspection services.
17 April 2014Co.L.Mar, a provider of acoustic subsea leak detection equipment, has released a free white paper on Offshore Technology.
31 July 2013Colmar Srl has recently signed an agency agreement with Dovaheights Energy.
14 May 2013Co.L.Mar. and ExxonMobil confirmed its participation in the third Subsea and Artic Leak Detection Symposium (SALDS), which will be held in Houston, Texas, on November 8-9, 2011.
12 October 2011Having ALD® equipment and personnel on site during a hydrotest allows for leak inspection to start immediately if needed. The request for preventive leak detection is growing rapidly. In the first months of 2011 we have completed two projects: Co.L.Mar. has been contracted by BJ Servic
10 July 2011The ALD system in ROV and diver version is equipped with an additional channel which can now host a hydrocarbon detector: the Turner Design – Cyclope 7. The sensor detects crude oil with a minimum detection limit of 0.1ppm. It is now possible to run an acoustic and optical inspection of the pipel
31 December 2010ALD® has been recently optimised for use with divers. This technique is suitable when inspecting flanges, valves or short segments of pipelines. Two solutions are available: ALD DIVER: the diver handles the sensor and drives it around the flange to be inspected, data are sent by a soft
30 November 2010Co.L.Mar has won a new project for ALD: a new success for us and excellent business for our customer. A new, 20km pipeline was found to be leaking during the final hydrotest. After adding dye, the ROV visual survey gave no result. ALD was then mobilised ALD which detected the leak during the ver
30 September 2009A new project for ALD: a new success for us and an excellent business for our customer. A 60km pipeline from shore to 60mt was leaking. ALD in the towed fish configuration was mobilised and once the inspection started, the leak was detected within 12 hours. The position of th
31 October 2008On 9 October 2008 ALD was installed on a Seaeye Coguar ROV for inspecting a well head in the Adriatic Sea. The well head had already been inspected visually without results. In less then one hour ALD detected a leak signal and pinpointed the leak at the back of the control POD. The leak could the
30 September 2008Following a 3-year development period the new ALD digital version has been completed. The performance improvements exceed expectations: Data are immediately converted to digital format: noise on trasmission line (ROV) is minimised New software version introduces the “C
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