TPi July 2015

products & developments High performance testing with Minimac 55 Magnetic Analysis Corporation

at remote locations. The Track screen depicts the test product’s length, with data on line speed, end suppression, flaw tracking, piece count and alarm routing. Linear strip charts and complete test data, as well as an unlimited number of settings, can be stored, annotated and recalled from a library on the internal storage device or network. When networked, multiple instruments can share the same library to ensure correct settings in multiple test lines. Setup and monitoring can be handled through a computer network, and reports with customer, product information, defect location, time, amplitude and phase can be stored locally or on a network server for quick follow up and quality assurance. MAC’s broad range of encircling and sector test coils is available for use with the Minimac, which can also be configured for flaw or absolute mode, depending on the application.

short ID or OD defects. The Minimac 55 can also check continuity and locate welds in single- and multi-conductor insulated wire and cable and, using the MID model, detect magnetic inclusions such as iron filings in copper material. The Minimac 55 features MAC’s proprietary Multimac performance in a single-channel instrument, with software controls for all functions, including phasing, filtering and sensitivity, all while operating at speeds over 4,000fpm. The test results are displayed in full- colour polar and linear mode showing real-time, true waveform signals for easy review on a separate on-site monitor or

(MAC) will feature the new Minimac 55 eddy current tester at this year’s Tube Southeast Asia show in Bangkok, Thailand, in September. The company will be co-exhibiting with its Thai representative, Siam Charn Co, Ltd. The Minimac 55 brings high- performance eddy current testing to a broad range of production applications. It is the first eddy current tester to offer the robust capabilities of MAC’s top- of-the-line Multimac ® , in a powerful, compact design. The instrument is suitable for dedicated, continuous production line testing where simple setup, without the need for constant operator adjustment, is desirable. Once the optimum settings have been established, a lockout mode feature can be set to prevent unauthorised changes. Defects and conditions that can be readily detected by the Minimac 55 include finding short surface and some subsurface defects such as laps, slivers and cracks in tube, bar, wire and parts, and locating weld line faults, including

Magnetic Analysis Corp – USA info@mac-ndt.com www.mac-ndt.com

Magnetic Analysis Corporation’s Minimac 55 eddy current tester

Electro hydraulic trip throttle valve Dresser-Rand, a global supplier of rotating equipment solutions to the oil, gas, petrochemical and process industries, has launched the new Gimpel ® electro hydraulic trip throttle valve (EHTTV). They can be locally or remotely actuated and exercised. The valves maintain a five-year overhaul cycle with no lubricating requirement, and comply with API-612 standards. They can also be used to improve efficiency by saving steam.

and efficiency to the market and are performing very well for our clients,” said Maged Mikhail, vice president engineered solutions and Gimpel SBU for Dresser-Rand. “We have an installed base of more than 17,000 Gimpel valves and have an excellent track record, which is why we’re now the only trip throttle valve manufacturer with SIL-3 certification.” Dresser-Rand’s president and CEO, Vincent R Volpe, presented the Gimpel valve team with the Company President’s Award in the technology and innovation category during the Dresser-Rand Worldwide Management Meeting in March.

Designed to prevent the catastrophic failure of steam turbines, the EHTTV stops the flow of steam to the turbine in less than 0.3 seconds, a closing force that is four to ten times faster than typical latch-type valves. Additionally, the back-seated stem design prevents steam loss when the valve is in the fully open position. EHTTVs operate independently of the installed turbine oil system and only require electrical power to operate.

The valve underwent extensive testing at Dresser-Rand’s facility in Burlington, Iowa, USA, and performed as expected under designed conditions. EHTTVs were developed for steam turbines in a wide range of industries, including power, ethylene, ammonia, pulp and paper, petrochemical, steel, medical, education and refinery.

Dresser-Rand – USA www.dresser-rand.com

“Our new electro hydraulic trip throttle valves bring a new level of performance

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July 2015 Tube Products International