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b v rao
Power-User

Join Date: Feb 2009
Location: India
Posts: 155

Steam Turbines and NEMA Standards

06/08/2009 6:26 AM

The allowable forces on rotary equipment due to piping as per NEMA(National Electrical Manufacturer's Association) is a function of diameter only. What is the logic? The steam turbine weights vary very much from lowest MW capacity to higher MW capacities. It will enable higher resistance for pipe forces. Is it not?
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: turbine allowable forces

06/08/2009 6:34 AM

Something to do with pressure and the shell thickness, maybe?

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Ash.Bandy
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Join Date: Jan 2009
Location: Thailand
Posts: 42
#2

Re: Turbine Allowable Forces

06/08/2009 8:17 AM

Agree but there are several other factors to be considered like Diameter Support Design Type of Inward/ Outward Bearings Suction forced/ natural (for turbines only)

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