I see that on thread 794-330216 davefitz was involved in replacing a dissimilar material weld for Alstom's HP OTC with flanges. I have been asked to look at the same issue. Has a solution been found?
Thanks,
Jack
Description of Unit.
The machine is a base loaded 250 MW 2400/1000/1000 unit with a GE turbine and a CE boiler. Water chemistry consist of Equilibrium Phosphate Treatment and conforms with EPRI recommended guidelines.
Problem:
Prior to the current outage the unit was suffering a 20 MW load...
Description of Unit.
The machine is a base loaded 250 MW 2400/1000/1000 unit with a GE turbine and a CE boiler. Water chemistry consist of Equilibrium Phosphate Treatment and conforms with EPRI recommended guidelines.
Problem:
Prior to the current outage the unit was suffering a 20 MW load...
I'm trying to get a handle on the installed cost of a package boiler with the following specs:
output 150,000 lb/hr
Pres 200psig
temp 600F
fuel no 2 oil/gas
low NOx firing system.
I know it is a real guess but I want to know if it is $5, $20 or $50 million dollars.
Any help would be appreciated.
Generator is a 170 MVA, GE, 3600 RPM machine commissioned in 1957. Retorqued Generator Core Compression Flange Nuts in 2000. Generator lead box recently opened and a nut with a piece of the stud was found. End bells off and one of the 24 keybar nuts is gone!
Is there any similar condition that...
I'm looking for a rational explanation of the orifice sizing for the operating vent of feedwater heaters. I have seen sizing criteria stated as 0.5 to 1.5 % of extraction steam flow but I don't know where it comes from. HEI doesn't have a criteria that I could find.
We have an 8" turbine meter measuring natural gas. Because the meter was calibrated at a temperature of 60 deg F and will be operated at 180 deg F, a question has been raised about the need to correct the meter factor for temperature effects.
It is standard practice to correct for thermal...
Here is one of the downsides of deregulation. I'm a steam guy that needs to provide data to our Independant System Operator on GSU Transformers. There used to be a whole department of knowledgeable electrical engineers across the hall, but with FERC 888 and 889, we can't talk.
Here is my...
