Solutions to the machine reliability barrier
An expert in mechanical seal design has completed seminars in South Africa aimed at improving the reliability of pumps and other rotating machines.
The full-day seminars were attended by petroleum refinery managers, tasked with ensuring uninterrupted production and preventing the leakage of hazardous fluids to atmosphere. Topics covered included the general principles of mechanical seal function, piping plans approved and recommended by the American Petroleum Institute, and the use of barrier fluids as an aid to total machine sealing.
Delivering the seminars was Dr Chris Carmody, special products manager for dry gas seals and sealing systems at mechanical seals company AESSEAL. Dr Carmody is the named inventor of many of AESSEAL’s product designs.
A key subject at the seminars was the mutual interaction of the process fluid, the system, the pump, and industry’s erroneous view of the mechanical seal almost as an added extra. Dr Carmody covered the main causes of seal failures, emphasising the need for the correct system and piping plan to ensure effective sealing and longer mechanical seal life. He also addressed the frustration caused to plant managers by not attaining the anticipated results of the constant drive for reliability improvements – in other words the reliability barrier.
AESSEAL said, “A man of exceptional experience in the field of machine reliability, Dr Carmody began his career as a maintenance engineer in the chemical and process industry before joining AESSEAL as the company’s first full time seal designer and development engineer. He returned to academic studies to secure his masters degree in science (structural integrity) and a doctoral degree on the fluid structure interaction of bioprosthetic heart valves.
Re-joining industry as a consulting engineer, Carmody worked on such prestigious projects as the A380 Airbus, the award winning Falkirk Wheel and the new Wembley stadium before returning to AESSEAL as special products manager. He is today responsible for the development of high integrity sealing products including dry gas seals.”
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