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Nozzle Loads for Air Cooler 1
- Thread starter farzam
- Start date
farzam (Mechanical)
API 661, Engineering Tool's for this work is 661/PRO is currently in development and will be available with the next PRG software release.
lst
API 661, Engineering Tool's for this work is 661/PRO is currently in development and will be available with the next PRG software release.
lst
- Thread starter
- #3
farzam,
I do not see the problem in case of nozzle can withstand 2 (or 3 times) of allowable load from API 661. The problem may be higher cost of construction.
What is the specific reason to use 2 or 3 times of nozzle load? Is this the problem from piping design?
I do not see the problem in case of nozzle can withstand 2 (or 3 times) of allowable load from API 661. The problem may be higher cost of construction.
What is the specific reason to use 2 or 3 times of nozzle load? Is this the problem from piping design?
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1
- #5
Farzam,
I would suspect that you will have problems if you design your piping system to hit the nozzles with 2-3x API-661 allowables and they are only designed for 1x. At the very least, you are going to have to submit those loads to your vendor for approval. At a minimum, there will probably be a cost adder to beef up the nozzles.
In general, we call for 2x API-661 as a part of all our purchase specs for air coolers as the 1x are typically too low to be useable for multibank arrangements. For a single bay cooler, I find I can usually make 1x 661 work out.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
I would suspect that you will have problems if you design your piping system to hit the nozzles with 2-3x API-661 allowables and they are only designed for 1x. At the very least, you are going to have to submit those loads to your vendor for approval. At a minimum, there will probably be a cost adder to beef up the nozzles.
In general, we call for 2x API-661 as a part of all our purchase specs for air coolers as the 1x are typically too low to be useable for multibank arrangements. For a single bay cooler, I find I can usually make 1x 661 work out.
Edward L. Klein
Pipe Stress Engineer
Houston, Texas
"All the world is a Spring"
All opinions expressed here are my own and not my company's.
gr2vessels
Mechanical
Farzam,
You most likely to encounter problems for 1xAPI loads, as they are typically too low. 2x or 3x would usually increase the cost of exchanger, however, is far less expensive than a complex piping design, particularly for a compact, modulised system, increasingly popular in the modern petrochemical industry.
You most likely to encounter problems for 1xAPI loads, as they are typically too low. 2x or 3x would usually increase the cost of exchanger, however, is far less expensive than a complex piping design, particularly for a compact, modulised system, increasingly popular in the modern petrochemical industry.
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