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Hi, Can anyone recommend what material to use for pipework carrying seawater? I was considering going to a glass fibre reinforced plastic system. Is there a recommended plastic to use? Pipe sizes range from 10inch to 20 inch. Pressure is only a few bar. Our existing piping is internally painted...

Hi, I am looking for recommendations for ball valves for isolation of natural gas fuel supply to our power station in the UK. Sizes range from 8inch to 12 inch ASA 300. Our existing valves are PTFE seated and have suffered from scoring due to dirt in the pipeline. Even the valves downstream of...

We also have 9FA and had lots of cross fire tube leaks. Did the replacement of your cross fire tube gaskets solve your vibration problem?

You're right its quick. We have tried different grades of brushes and tried extending interval. We only change maximum of a quarter of the brushes at any one time so the new ones get a chance to bed in.

Hi, Does anyone have an Elin (Austria) 9A5 Type generator at their plant? We have a 140MW generator but must carry out brushgear replacement every 6 weeks which has to be done with the machine on turning gear. We want to upgrade to allow us to do the brushgear change onload. Elin have proposed...

Brilliant. Cheers.

What does Ø160c7 mean on a shaft diameter. It is a clearance fit. Unfortunately I don't have a limits and fits table and the ones if found on the web don;t have c7.

I look after the maintenance of a HVAC system for an office block. We have a neighbouring business (meat processor) that a certain times of the day lets out an awful odour. Our HVAC system sucks in the the odour and stinks out the building. It is that bad that some people have almost hurled at...

Hi, I need some help to source a pipe fitting for my power station. If someone has one or can give me details of good reputable suppliers please. We would be willing to buy or replace it as soon as my usual supplier delivers to us (he is currently quoting 4 weeks!). The fitting needed is:-...

Hi, We have 6 Beaudrey bandscreens filtering sea water on the cooling water intake to our power station. We are having problems with debris getting past the screens. We have checked all the obvious and not so obvious points:- - Screen tension - Side clearances - Damaged panels - ete. Beaudrey...

Definately need more info, but I have seen similar problems with my GT when we've had problems with our gas fuel supply -eg loss of performance heating or even a dodgy input into our gas chromatograph throws out the Wobbe index correction which deloads the GT. Send some more information.

Hi, My UK based company owns/operates a liquid CO2 system for fire fighting purposes. MAOP is 22 Barg. The liquid CO2 is distributed by various sizes of pipes the largest being 100mm to the different areas. We have no technical documentation on the pipework - no material certs, welding records...

You could most probably add the waste oil to the fuel oil, but I doubt if this mix would comply with the OEM fuel spec for the machine. And if the machine is under warranty or some sort of long term service agreement then you could find yourself out a lot of money if something goes wrong and...

We have a frame 9F GT followed by HRSG. During commissioning it was found that there was a lot of vibration of the HRSG tubes (vertically hung). There was a lot of damage caused to the tube restraints and these had to be repaired and replaced with a much heavier support. What do you mean by...

ReyesLeon, We have a Taprogge system installed at the power station I work at. It is used in a 150MW condenser with sea water as the cooling medium. We used to have many problems with loosing the balls but I now think this was due to the cleanliness of the seawater -the ball strainer would get...

I work on a power station which uses the KKS labelling system(Kraftwerk-Kennzeichen-System). This is a European standard which means the numbering is consistent across many plants, eg. the boiler feed pump on my plant will in theory have the same identifier as one in Germany. This way everyone...

Hello, Need some help finding the cause of a failure of a copper tube bend on a small HVAC split unit. The 6mm copper pipe carries R422 refrigerant and has failed at least 3 times now on the inside of the bend. The bend was made using a pipe bender. The failure appears to be a pin hole failure...

I carboblasting still common? I know the carbo blast system on my plant was decommissioned quite some time ago. We now use a liquid detergent injected into the turbine inlet.

Hi, Does anyone know of any requirement in the UK for pipefitters / maintenance personnel to have formal training to work on onshore industrial natural gas pipework installations? We employ qualified and competent fitters to work on our power station and they are required at times to work on...

ANother water treatment company is Betz Dearborne - http://www.gewater.com/index.jsp In my experience I have seen cooling towers taken out of service every two years for inspection and disinfection - I don't know if the disinfecition was a legal requirement to deal with potential for...