Engineering & Turbine Specialists
It is known that leaking valves represent a major safety risk and are a major source of lost profits. Find leaking valves quickly and easily with Score's MIDAS Meter® Acoustic Emission Leak Detector long before detection by conventional methods or instrumentation!
Completely portable and easy to use, the MIDAS Meter® uses an acoustic emission (AE) sensor which finds and quantifies valve leakages by examining the very high frequency noise a leaking fluid generates. Not only does this valve leak detection tool quickly find leaking isolation valves, control valves, check valves, PSVs and steam taps, it also allows personnel to benchmark valve performance during commissioning and provides data storage, analysis and reporting in the field via a PDA.
This state of the art valve condition and performance solution takes you from reactive to proactive maintenance by engaging in condition based monitoring and predictive maintenance activities. MIDAS Meter® valve leak detection equipment therefore helps focus budget expenditure and actions on valves where maximum benefits can be delivered.
The unique benefits of this step-change technology are:
MIDAS Meter® delivers a proven valve monitoring technology with a track record of over 20 years and is used by major companies in the oil & gas, petrochemical, utility, energy and process industries throughout the world.
MIDAS Meter® can be deployed in support of:
The PDA software allows the storage of readings, results and valve information with the most powerful aspect of the software being its ability to analyse the readings and convert them to an actual leakage rate instantly, whilst in the field. MIDAS Meter® Core Software also now has a new built-in RBI (Risk Based Inspection) Calculator which assists users in identifying when to complete surveys on each valve asset, according to its Probability and Consequences of Failure. RFID (Radio Frequency Identification) capability has also been added as an option to positively and automatically identify valve assets "hands-free" in the field, enhancing the reliability and speed of surveys and hence their effectiveness. The PDA can be easily connected to a PC/laptop, using the included docking station. The MIDAS Meter® Communicator Application imports all of the information gathered during the valve survey, offering the opportunity for data back-up, licensing controls and the generation of standard results graphs and reports, indicating valve condition. These reports are designed to provide evidence of current valve condition, which Asset Integrity and Maintenance Teams can then use to prioritise and target maintenance resources and interventions on valves where maximum benefits and returns can be delivered.
The MIDAS Meter® Core Software allows direct input and storage of valve readings, results and valve information on the hand-held field device (PDA). The most powerful aspect of the software is its ability to receive the AE readings directly (via Bluetooth connectivity) from the MIDAS Meter® Handset and convert them to a calculated leakage rate instantly, in mass or volumetric leak rate units. On calculation of the leak rate, the software then additionally displays a comparison against a pre-set "allowable" leak rate and presents this data along with a "traffic light" indication, guiding the operator on whether (or not) the leak should be actioned with a maintenance intervention.
Each valve survey (test) performed has a specific time and date stamp attached, so that trending graphs of degradation in sealing performance over time can then be plotted, using the Communicator™ software application. (Through-Seat Leakage). According to their preferences, users may also select the option to display a bar chart which offers a visual indication of the certainty of the calculated leak rate, as seen below.
All above features come as part of our standard software, which we have been able to continuously improve, based on global user’s feedback, since its launch in 2010.
The MIDAS Meter® Communicator Application is a PC / Laptop based application which allows communication between the PDA and PC / Laptop. It is used to perform the following functions: Import Valve Data This allows users to pre-load valve population details onto the PDA before performing the physical survey in the field. Backup This allows a backup of the current PDA database and latest / historical survey results to be saved. Generate Reports This provides the functionality for producing survey results reports in "standard" portable formats, quickly, easily and allows trending.
To support the very latest developments and strategies in Asset Integrity Management (AIM) and specifically Reliability Centred Maintenance (RCM) planning and implementation, Score Diagnostics have enhanced the MIDAS Meter® Core and Communicator™ software to now include new functionality and guidance on Risk Based Inspection (RBI) for valves. The RBI calculator offers users the capability to schedule MIDAS Meter® Surveys on their valve population, dependent upon each individual valve's assessed criticality and risk. Selectable parameters such as "probability" and "consequence" of valve failure are provided to help owners easily assess risk and gain guidance on when each valve in the installed population should optimally be surveyed.
This market-leading development helps owners move their valve maintenance activities away from the traditional CMMS driven "calendar based approach" and alternatively towards a "value based approach" to valve management. Risk reduction, cost savings and improved reliability / operating efficiency will result. Users are able to produce standard look ahead and overdue reports using the MIDAS Meter® Communicator™ software. These reports can detail which valves in the installed population are due to be tested, as well as highlighting any valves that are already overdue for test.
To support the very latest developments and strategies in Valve Asset Tracking and to assist with compliance to ISO 55,000, MIDAS Meter® core software now has optional functionality to interface with RFID tags. This functionality enables fast, automated and positive identification of your valve assets every time, ensuring your survey data is always traceable and associated with exactly the correct valve asset every time. When fitted with the RFID reader attachment, a simple sweep of your PDA past the RFID identification tag on your valve automatically pulls up your valve record and all its historical test data, making it even faster to survey your valves in the field and even easier to manage your survey data and "actionable evidence" gathered during surveys.
To provide delegates with the knowledge, understanding, capability and confidence to safely and effectively use MIDAS Meter® in operational process plants to detect, quantify and trend through-valve leakage (i.e. to complete valve surveys). To train the delegates in the correct process and procedures of uploading and downloading of all required data to / from MIDAS Meter®. To assist delegates in understanding the survey results / outputs and thus gain maximum benefits from ownership of the MIDAS Meter® Kit (such as cost and risk reduction as well as efficiency maximisation). For more information, download our training flyer.
In the current economic climate in the oil & gas industry, the non-availability of free capital to invest in innovative technology that has the potential to deliver high returns is a challenge for operating companies and their teams. Buying cycles can be significantly extended accordingly and the immediate returns which are available are consequently not immediately realised.
Looking to the operating companies’ OPEX budgets however, it is very often the case that if a smaller more manageable investment can be made, operating companies can still realise the immediately available benefits of deploying the latest innovative technology.
One way in which Score Diagnostics Limited have opened up the opportunity to operating companies to engage with the latest technology for valve condition and performance monitoring is to supply risk-based inspections as a service. Rather than simply supplying the MIDAS Meter® product, alternatively, a Score Engineer is deployed to complete valve surveys at a fraction of the cost of ownership of the product.
Click here for more information on Midas Meter® Surveys as a Service, or complete the form below to receive a quotation.
In this case study, we explain why Acoustic Emissions (AE) Sensor Technology should be your start point, when it comes to valve condition monitoring and through-seat leak detection. Quick, easy and conclusive valve condition monitoring results can really drive your condition (value) based maintenance programmes. Contact us now to set up a demonstration or for valve survey assistance.
This case study highlights how you too could save over $2Million every time you need to verify the performance of your critical isolation valves such as RESDVs (Riser Emergency Shutdown Valves). WARNING : The four and a half minutes it takes to watch this case study may change the way you test your critical valves in situ – forever! Click to watch it now… then start saving!
In this case study, we focus on how our customer was able to reduce flaring emissions, minimise maintenance spend (at no additional risk) and turn a relatively small investment back into significant recovered profits. Please take a look at the video now, to see just how easy that was for them - and you - to achieve.
This case study describes how an Acoustic Emissions (AE) Survey with MIDAS Meter®, completed in advance of a planned shutdown, was able to reduce the turnaround scope, duration and costs associated with valve maintenance. You too can make these savings at your next turnaround. View the video now to see how.
In this case study, we highlight how an acoustic emissions (AE) survey was performed to guide our customer through a challenging through seat leak sealing procedure, on an 18" bore ball valve. Without the evidence generated by the MIDAS Meter®, the customer advised that they may not have proceeded with the work, as there was no guarantee that they would have been able to achieve a successful outcome.
This MIDAS Meter® case study will be of interest to you if you are working in a nuclear power production plant and carrying out Appendix J testing. View the video now to see how you can save downtime, reduce testing costs and simplify the testing programme...
Please view the case study videos above.
The MIDAS Meter® has been designed to be very user friendly. It can be easily used for leak detection by an operator after just 30 seconds of training. The PDA that comes with the handset requires additional training and this, along with the survey results downloading software on the PC forms the basis of most of the training course. Once the valve details are programmed into the PDA, it is incredibly easy to operate and a complete survey can be completed in 2-3 minutes per valve. My experience is that following the training course completion all technicians are comfortable using it to quickly and easily identify and quantify through-valve leaks.
Training courses are available from Score Group. For further information please see our training course flyer here : Click Here or contact us.
Valve sizes from ½" to 50" NB can be surveyed
All types of valves which have an isolating function capability can be tested, including :-
The traffic light system built into the PDA is designed to act as a performance indicator as follows:
Green – Valve performing within end users chosen acceptable limits – No action required
Amber – Leakage noted, but not yet exceeding end-user's chosen "allowable leak rate" – Monitor closely
Red – Leak rate approaching or beyond end users chosen acceptable limits - Immediate action required
Note: Users set "acceptable limits / thresholds" (i.e. it these are user dependant/selectable) and Score Group accept no responsibility for the limits set by any end user.
See Technical Specifications
No – there is a threshold of leak detection. Very small leaks (less than 0.1 litres / min) may not be detected, because they do not make enough noise.
Note: All leak detection methods (such as pressure build up tests or looking for visible leakage) have a threshold of detection and uncertainty attached to the result.
When performing a test, the user needs to distinguish if the test is on gas, liquid or steam. Once known, this allows the correct fluid type to be selected in the PDA, to facilitate the automated leak rate calculation. Gas type or liquid density has a small effect on leakage quantification.
A valve must be in the closed position to carry out an AE leak detection survey. When the valve is closed, there will be no fluid flow, therefore the valve and piping will act as a separator. From the valve orientation, it can be determined if any leakage could be on gas or liquid.
The valve being tested must have isolating capability, it must be in the fully closed position and a differential pressure must exist across the seat to seal interface. The Acoustic Emissions (AE) Sensor on the front of the MIDAS Meter® handset must be brought into direct contact with the valve's metallic surface and that of the adjoining pipework, upstream and downsteam of the valve. The technique relies on finding the highest stable AE reading on the valve body so safe access for personnel is required. Lagging, if installed, must be removed for access in localised areas.
Yes. If the leakage is turbulent, it is possible to detect leakages with a differential pressure down to 1 bar or less. However this makes the leakage quantification more uncertain. Differential pressures of 10 bar and over produce more favourable results.
Battery life is typically 4 – 6 hours continuous use. With the built-in "Auto-off" function, this is more than enough to ensure the battery will last throughout a typical full working day The “Auto-off” function is set at 10 minutes, when no activity is detected by the device.
MIDAS Meter® detects acoustic emissions in the frequency range 60kHz to 600kHz. The human hearing range only extends up to 20kHz, so when you can hear noise, then you should have no worries about this interfering with your measured results, as it is in a different frequency range. MIDAS Meter® does not detect noise below 60 KHz. Concerns about background noise levels usually come from experiences of using lower frequency ultrasonic devices which have been seen in the past to give inconclusive results, since they pick up all low frequency noise (such as vibration and rotating equipment like pumps, bearings etc.), thus masking the high frequency signal that is generated by the leak path.