OPERATIONS & MAINTENANCE


integrity management system that provides remote, continuous online corrosion and erosion monitoring, enabling operators to track localised corrosion and ensure cost-effective pipeline health even in challenging environments. The Roxar FSM Log 48 - with 48


E


referring to the number of pins in the sensing pin matrix - is a large-area, real-time remote pipeline monitoring solution capable of distinguishing between localised and generalised corrosion, a feature that helps reduce the need for pigging and other costlier inspection methods. It has a total cost of ownership of just one typical smart PIG run of up to 10km (this can vary according to the PIG technology). “Localised corrosion, when


undetected, can cause pipeline failures


that lead to reduced transportation availability and fines or penalties - not to mention repair costs,” said Chuck Miller, director, Global Midstream at Emerson Automation Solutions. “The Roxar FSM Log 48 reduces these risks while delivering accurate corrosion detection in remote and hard-to-reach places, making it possible to monitor a larger area of pipeline and increasing capacity.”


NEW CORROSION MONITORING SOLUTION for remote pipelines The new tool continuously


merson has launched the Roxar FSM Log 48 area corrosion monitor, a new pipeline


monitors corrosion in remote areas using WLAN and cellular data transfer protocols and built-in solar power options that reduce maintenance and personnel requirements. Armed with comprehensive, real-time pipeline health information, operators can make better decisions about when and where to conduct pig runs, integrity digs and hydrostatic pressure tests, which helps to increase pipeline availability and transportation capacity. The system is designed to work for both uncovered and buried pipelines. It can be retrofitted to existing uncovered or buried pipelines and several units can be located over a pipeline, minimising the need for pigging to assess pipeline integrity and increasing transportation capacity. 


For more information visit www.emerson.com


THE ADVANTAGES of PROGRESSING CAVITY PUMPS


efficiency regardless of viscosity. What is particularly important in the oil sector, however – even more important than efficiency – is the flexibility that displacement pumps provide when it comes to the viscosity of the medium. Whilst centrifugal pumps


W


have fixed operating points and their efficiency drops rapidly as viscosity increases, Notos multi-screw pumps also operate with excellent rates of efficiency across the entire range of viscosity up to 50,000 cSt, as they operate on the principle of displacement. The pumping principle is based on the interaction between the spindles and the housing


hat makes progressing cavity pumps so attractive? The short answer is: high


to form chambers, which continuously convey the medium at stable pressure from the suction to the discharge side, almost entirely independent of consistency or viscosity. The flow rate is determined by the rotational speed, the screw diameter and the thread pitch. It is therefore directly proportional to the speed, which can be flexibly adjusted.


And what is more: the pump speed and the viscosity of the medium affect the NPSHr value, which determines the intake behaviour. As Notos pumps can be regulated flexibly,


they can keep NPSHr values


suitably low to match conditions so that the medium is sucked in without interruptions and tanks can be drained fully, even with viscous


crude oil derivatives. At a Brazilian terminal, this is used for transferring polyols: the versatile oil product used to produce plastics and flavourings has a viscosity of up to 3,000 cSt. The oil can still be pumped at normal ambient temperatures of 25 to 28°C at a rate of 50m³/h without leaving any appreciable residue in the storage tank thanks to the special technology.


Another advantage of low NPSHr values is that all Notos multi-screw pumps can usually be operated beside the tanks. Depending on the design of the pipework, the pumps reliably take in the medium. For highly viscous media or deep tanks that can only be accessed from above, the pumps can also be submerged to guarantee high flow rates even when tank fill levels are low. 


For more information visit www.netzsch.com


www.engineerlive.com 21


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