Minimum design metal temperature, Mechanical Engineering

Assignment Help:

Q. Minimum Design Metal Temperature?

The MDMT and coincident pressure shall be selected in consideration of the operating phases. Reliable administrative procedures to control the pressure/coincident temperatures during transient operations (e.g. startup and shutdown), are often appropriate from a materials of construction selection point of view.  For example, when considering the effects of auto-refrigeration on carbon and low alloy steels, such procedures make it appropriate to consider operations below the minimum design metal temperature (MDMT) stamped on the nameplate.

When atmospheric temperatures govern the metal temperatures during startup or normal operations, the lowest one-day mean atmospheric temperature at the installation site should be considered. Fig 2-2 from API Standard 650 or NBC of Canada may be used to establish the lowest one-day mean temperatures, insofar as applicable, or obtained from the Design Questionnaire. The mean metal temperature during shop and future field pressure testing shall also be considered during the vessel design stage.  The temperature during the pressure test of the pressure resisting components and attachments judged to be essential to the structural integrity, shall be at least 30oF (16oC) warmer than the minimum design metal temperature to be stamped on the nameplate, but shall not exceed 120oF (49oC).


Related Discussions:- Minimum design metal temperature

Explain concept of drill, Explain concept of Drill Power feed of the sp...

Explain concept of Drill Power feed of the spindle is a common feature. Also coolant system is a ordinary feature of the radial drilling machine. Radial drilling machines ca

Example of support reaction, Example of support reaction: A fixed cra...

Example of support reaction: A fixed crane of 1000Kg mass is to lift 2400Kg crates. It is held in place by pin at point A and a rocker at point B . the C . G . is located

Find kinematic viscosity, A pump is used to deliver discharge of 0.05 ...

A pump is used to deliver discharge of 0.05 m 3 /s from a river to a storage reservoir. The system consists of 500 m of 0.15 m cast iron pipe with a 90 o bend with a rad

Choke in motorcycle, Choke: This is incorporated in the main air passage a...

Choke: This is incorporated in the main air passage and used to control the air quantity to supply rich mixture. While starting an engine, the choke shuts off the air supply to th

The ordinate dimension command-autocad, The Ordinate Dimension Command ...

The Ordinate Dimension Command We can use The Ordinate command to annotate co-ordinate points with X or Y values. This might be useful for setting-out on site plans.

Reciprocatin compressor - , Reciprocatin Compressor. It is taken in use to...

Reciprocatin Compressor. It is taken in use to compressor gases. ( kE 2  - kE 1) = 0, ( pE 2  - pE 1) = 0 q 1-2  - w 1-2 = ( h 2  - h 1 ) + 0 + 0 - q 1-2  - (- w

What is hopper unit, What is Hopper unit Two hydraulically operated fol...

What is Hopper unit Two hydraulically operated folding type hoppers are provided on the front side of the machine. The capacity of the hopper is 4.25 CM.

Give the basic concept of heat engine, (a) Can you explain the limitations ...

(a) Can you explain the limitations of 1 s t law of thermodynamics ? Describe thermal energy Reservoir, heat sink and heat source. (b) Give the basic concept of Heat Engine, Ref

Physics Question, Hello to whom it may concern. I am currently having much...

Hello to whom it may concern. I am currently having much trouble with a physics problem. I have an inverted L beam lying on a table. At the end of the flat piece laying on the t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd