Pipeline systems and technologies

Underwater corrosion rate control

CMS-PST-MetriCorr®-M

Startup and commissioning  at the Dzhubga–Lazarevskoye–Sochi gas line Startup and commissioning at the Dzhubga–Lazarevskoye–Sochi gas line

Basic technical characteristics 
of the CMS-PST-MetriCorr®-M

Parameter Value
Corrosion rate, 2 channels 0,001…50 mm/year
OFF potential of the structure 0… ±3 V
ON potential of the structure relative to the reference electrode 0… ±30 V
AC voltage on the structure relative to the reference electrode 0… 100 V
AC / DC "structure - coupon" 0…50 mА
Local protector’s current, up to 2 channels 0…±1 А
Self-contained operation period of the underwater controller 5 years
Installation scheme of CMS-PST-MetriCorr-M Installation scheme of CMS-PST-MetriCorr-M

CMS-PST-MetriCorr®-M

The CMS-PST-MetriCorr®-M corrosion monitoring system (co-development with «Gazprom VNIIGAZ» LLC and «KATOD» CJSC) is designed for remote monitoring of corrosion parameters on the underwater steel pipelines via wireless communication channels (hydroacoustic and GSM).

CMS-PST-MetriCorr®-M general view CMS-PST-MetriCorr®-M general view

Принцип действия

An underwater controller reads the monitored parameters from sensors, probes, and electrodes connected thereto to save them in the non-volatile memory according to a preset measurement schedule. After that, according to a preset data-transmission schedule, the underwater controller transmits accumulated data via hydroacoustic modems to a controller located aboard ship or on a buoy. Then, this controller relays the received data via a GSM channel to a MCS-PST monitoring and control server.