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TOPIC: precaution of power plant design

11 years 8 months ago #7281

  • sandiip
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Hello,
Can you tell me what precautions do I take to design Power Plant piping?
Such as:
1. How to route steam pipe ?
2. Where to use drain plug ?
3. Flange use


BR
Sandiip

Sandiip, Your post is very interesting. I 11 years 8 months ago #4490

  • Jop
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Sandiip,
Your post is very interesting.
I will try to give you some answers to your three questions.
1. How to route steam pipe ?
To route a pipe you must determine where the starting point is and where the ending point is. Then you must look at the primary pipe support locations and determine which pipe rack your line needs to use. Then you must know the operating temperature of the line and understand what that temperature will do to the line including the amount of expansion, displacement, stress and force. You need to know and understand the proper selection of anchors and guides along with the proper placement. You need to know and understand the valving (shown on the P&ID) that will be included in the line along with the proper placement for proper operation. You also need to know and understand the instrumentation and controls so you can place them in their proper place. You need to consider the impact of proper or improper placement of objects when maintenance is required. You also need to recognize that this plant needs to be constructed, don't make it impossible to build.

2. Where to use drain plug ?
A drain plug must be installed in every threaded drain valve. You do this so someone does not inadvertently open a drain valve and get hurt.

3. Flange use?
Flanges are commonly used on 3" and larger piping systems for most commodities including low and medium pressure Steam in a Power Plant. There are exceptions to this sometimes for toxic services or for very high pressure steam. With these systems the use of flanges is held to an absolute minimum by using welded joints at equipment connections and welded end valves. The reason for this is that in these extreme services any leakage at a flanged joint could be fatal.

I hope this will be of help for you.

Now please tell us about you and your background.
Where are you?
What is your education?
How old are you?
What is your job title?
What is your role and responsibility relative to this Power Plant?

With this information I will be better able to phrase my answers to give you the best results.

I also recommend that you read all the articles in the "Training", "Tools" and "Tips" section of this website. I think you will learn a lot.
Do it once and Do it Right

how to select flanges 11 years 8 months ago #4491

  • sandiip
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Dear Jop,
Thankx for u r precious reply, & I hopefully Implement it in my knoledge.
Second think about myself


please
tell me about urself


again I have query


1. How to choose 150,200,300lb... range of flanges just give calculation(formula)


Br
Sandiip

Re: how to select flanges 11 years 8 months ago #4492

  • gpsvn
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again I have query


1. How to choose 150,200,300lb... range of flanges just give calculation(formula)


Br
Sandiip

Don't you have documents called piping specifications ? Each piping specification is applicable for several services at a range of pressure and temperature. And each piping specification tells you what flanges, pipes, fittings to be used.

Maybe you already have that, but you want to know the reason behind it. Then you should look up the ASME B16.5, which tells you the pressure - temperature range for each flange rating and each group of material.

Hope that helps

Sandiip, Please check your "Private Messages" 11 years 8 months ago #4493

  • Jop
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Sandiip,
Please check your "Private Messages" click on the "PM" button at the bottom of this message.

Jop
Do it once and Do it Right

Back to the top 11 years 8 months ago #4530

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