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

The progressive liberalization , The progressive liberalization of the nor...

The progressive liberalization of the norms for foreign investment and import of technology appear to have benefited the automobile sector with production of total vehicles increa

What are combined footings, What are combined footings? COMBINED FOOTIN...

What are combined footings? COMBINED FOOTINGS: When a footing supports two or more columns in the same line, it is called a combined footing. The combined footing which supp

Determine the maximum permissible axial load, Determine the maximum permiss...

Determine the maximum permissible axial load: In an open coiled spring of 10 coils the stresses because of bending and twisting are 120 N/mm 2 and 150 N/mm 2 respectively wh

Linear problen, A paper mill produces two grades of paper viz. , X and Y. B...

A paper mill produces two grades of paper viz. , X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper

Stiffness properties in composite materials , There are five elastic proper...

There are five elastic properties needed to represent the elastic behaviour of a unidirectional laminate under in-plane loading, but only four of these are independent. The five

Hot working of metals, advantages and disadvantages of hot working of metal...

advantages and disadvantages of hot working of metals

Explain the working of radial drilling machine, Normal 0 false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Determine the smallest increment of strain hat, A 16-bit A/D board is arran...

A 16-bit A/D board is arranged to accept voltage signals ranging from -5V to +5V.  The A/D board is used to monitor the output from the Wheatstone bridge shown below.  The strain g

#power plant, Components of power plant &it''s functions

Components of power plant &it''s functions

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