Full steam ahead - Scottish distillery with Grundfos
There’s steam and there’s high-quality steam. There are pump solutions and intelligent pump solution...
If you think of your plant as a human body, then steam is the blood. So the last thing you want is for it to be leaking away, or be watered-down by condensate that leads to water hammer: the steam system equivalent of high blood pressure.
Yet on many sites, people ignore signs of trouble – whether it’s the hiss of steam escaping where it shouldn’t, or the banging of water hammer.
One leads to loss of steam, loss of pressure, inefficiency and higher energy costs. The other can create pressure peaks of over 120 bars, in systems generally designed for 10 bars only. That can wear seals, create more leaks, and in the worst cases cause valves or pipes to rupture with a catastrophic – and potentially life-threatening – escape of high-pressure steam.
It’s to prevent the inefficiency, waste, cost and potential danger of a poorly-functioning steam system that premium steam equipment supplier TLV has developed the Steam System Optimisation Program (SSOP).
Analysis of TLV’s SSOP in over 100 hydrocarbon and chemical plants worldwide has shown substantial energy savings. Before the program was implemented, the plants had a leakage rate of 20-40%. After the program’s successful implementation, the rate had dropped to under 5%.
SSOP involves three phases, and typically runs for five years. However, importantly for the wide variety of plants which use steam, it’s a highly flexible program which can be adapted to many different requirements.
In general, the three phases are:
As well as increasing efficiency, and reducing costs through cutting energy use, the SSOP program now includes a risk-based element too.
Decisions taken within the process industry sector regarding maintenance actions, inspection frequency and change management are increasingly risk-based. But until now this approach has not been available for steam systems.
Now a risk-based solution methodology has been developed by TLV, in co-operation with the TWI research institute and Dr. Brian Cane, to help engineers optimise steam system assets. The methodology – which is compliant with the latest API RP 581 guideline – uses a formal, systematic risk-management approach. It enables quantitative assessments of risk of failure for applications which use steam, and the selection and scheduling of risk mitigation recommendations.
So now engineers who employ the SSOP can expect to see not only cost- and energy-savings and efficiency gains, but also risk reductions.
The success of the program has been proved in more ways than one. In addition to failure rate reductions across more than 100 customers’ sites, the TLV Steam System Optimisation Program has also been given two energy efficiency awards.
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There’s steam and there’s high-quality steam. There are pump solutions and intelligent pump solution...
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