What are the standard sizes for nozzle thickness in pressure vessel design?

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Discussion Overview

The discussion revolves around the standard sizes for nozzle thickness in pressure vessel design, focusing on specifications related to pipe sizes and their corresponding wall thicknesses. Participants explore the requirements and considerations for designing nozzles within the context of pressure vessels.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the standard thickness of plates used to form nozzles, suggesting a need for specific dimensions.
  • Another participant asks for clarification on the type of nozzle being referenced, indicating that different nozzles may have different requirements.
  • Further clarification is sought regarding the specifications, particularly mentioning "4”-600# flanged" pipe and its relevance to the discussion.
  • Some participants note that the specification mentions using 4" and 6" pipes for nozzles but lacks additional details, emphasizing the importance of accompanying drawings for accurate cost estimation.
  • There is mention of using Schedule 80 pipe sizes, with a reference to a standard pipe size chart for wall thickness information.
  • A participant raises a question about estimating the minimum required shell thickness for the pressure vessel, expressing uncertainty about the appropriate value for R_design and how to validate a guess.
  • Another participant highlights the necessity of adhering to ASME codes for the design of nozzles and other components in pressure vessels.

Areas of Agreement / Disagreement

Participants express varying degrees of uncertainty regarding the specifics of nozzle design and the necessary standards. There is no consensus on the exact requirements or methods for estimating dimensions, indicating that multiple competing views remain.

Contextual Notes

Limitations include a lack of detailed specifications and drawings that are typically required for accurate design and cost estimation. The discussion also reflects uncertainty about the appropriate values for design parameters like R_design.

Who May Find This Useful

Individuals involved in pressure vessel design, engineering students working on related homework, and professionals seeking to understand nozzle specifications and ASME code requirements may find this discussion relevant.

minoroctave
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Homework Statement


If I'm looking for standard sizes of nozzle thickness.

Homework Equations

The Attempt at a Solution


Should I be searching for the standard thickness of plates that are used to form the nozzle?
 
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What kind of nozzle?
 
SteamKing said:
What kind of nozzle?

it says " 4”-600# flanged" pipe
 
(1) What is background to this question ?

(2) Any pictures, drawings or links to manufacturers website that you can post ?
 
Nidum said:
(1) What is background to this question ?

(2) Any pictures, drawings or links to manufacturers website that you can post ?
 

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The specification talks about using 4" pipe and 6" pipe for "nozzles", but provides no other details.

Usually, a drawing accompanies such a specification to provide the necessary details from which a cost estimate can be prepared.

Both pipe sizes are given as Schedule 80, the wall thickness of which can be obtained from a standard pipe size chart:

http://www.engineersedge.com/pipe_schedules.htm
 
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Likes   Reactions: minoroctave
SteamKing said:
The specification talks about using 4" pipe and 6" pipe for "nozzles", but provides no other details.

Usually, a drawing accompanies such a specification to provide the necessary details from which a cost estimate can be prepared.

Both pipe sizes are given as Schedule 80, the wall thickness of which can be obtained from a standard pipe size chart:

http://www.engineersedge.com/pipe_schedules.htm
thanks, I also have a question about the shell design. I have an equation for the minimum required shell thickness
##\frac{P(R_{design}+corrosion)}{SE-0.6P}##

but I'm not given R_design. should I guess an R_design? what should I look at to check if the guess is a good estimate?
 
This is a pressure vessel so you will need to design shell , nozzles and other components to appropriate ASME codes .
 

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