Surge Analysis
Surge analysis involves the computer simulation of pressures
and flows in liquids caused by transient operations of pumps
and valves. Unchecked it can result in cracked pump
casings, pipe leakage, contamination and environmental
damage.
Surge analysis is a routine tool used in the design of new cross-country
pipelines when large volumes of liquid are being transferred
or in shorter systems when the liquid is particularly hazardous. On
new systems we can help clients choose between pipe material
options, for example between polyethylene and carbon steel in
water systems. Where there is evidence of existing problems
having arisen, we can set up a model and use it to confirm causes
and develop possible solutions.
Spectrum Fluid Dynamics uses Flowmaster software for example
in considering surge arising during solution
mining. Flowmaster
is one of the most widely used packages and is also used by some
of Spectrum's clients. Initial surge analysis models built up by ourselves
can be handed over to our clients to allow them to simulate future
plant conditions.
Other projects include:
- Cooling water and LNG loading systems, Yemen LNG Co, for Technip
- Preliminary analysis of rising main, Thetford water treatment works, for AWG
- Butane Network modifications, Wilton, UK for Huntsman Petrochemicals
- Water metering system analysis, Nottingham UK, for Smartmeter Ltd
- Diesel distribution systems, Ipswich, UK for Vopak
 Surge Projects
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ESD
Valve |
This surge analysis image shows a typical flow and
pressure characteristic of 15 second closure on an emergency
shut down (ESD) valve. The transient pressure is small
in this example at only 10% of line pressure. In some
extreme cases transient pressures can temporarily rise to
200% of line pressure.
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