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

Calculate a quarterly delivery schedule, Gibson Ltd operates sportswear sto...

Gibson Ltd operates sportswear stores in Dublin and Cork and has set the following quarterly sales target for international and provlncial rugby shirts for 2013 per the attached sc

Selection of metallic materials, Q. Selection of metallic materials? Th...

Q. Selection of metallic materials? This Engineering Practice has been written to assist those involved in the construction of new equipment and for the maintenance of existing

What is tantalum, Q. What is Tantalum? Tantalum is one of the most corr...

Q. What is Tantalum? Tantalum is one of the most corrosion-resistant metals known. However, the high cost of tantalum has limited its commercial use as an all-purpose corrosio

Calculate the minimum required cross-sectional area, A lifting shackle in a...

A lifting shackle in a glass-making factory is made from a special high-temperature stainless steel. It is expected that the shackle will experience a tensile load of 5kN and th

Cermets-alloys for cutting tools, Cermets Such are the variation of ce...

Cermets Such are the variation of cemented carbides while the carbides of W and Ti are solidified in the softer matrix of Co and Nickel to get high hardness, resistance to hig

Bell coleman cycle, Derive a formula for a bell coleman efficiency

Derive a formula for a bell coleman efficiency

MECHNICS, FIND THE RESULTANT OF THE SYSTEM OF FORCES AND THE POINTS WHERE T...

FIND THE RESULTANT OF THE SYSTEM OF FORCES AND THE POINTS WHERE THEY CUT THE OX AND OY AXIS.

Ceramic tools-alloys for cutting tools, Ceramic Tools Aluminium oxide ...

Ceramic Tools Aluminium oxide or Al 2 O 3 is pressed and sintered in a powder metallurgy method in various shapes of cutting edges that are fastened to mechanical shanks. The

Plastics-reinforced plastics and adhesives, Plastics, Reinforced Plastics A...

Plastics, Reinforced Plastics And Adhesives Introduction Organic materials particularly that occur in nature like wood and leather have been employed for engineering caus

Calculate the actual machining time, Calculate the Actual Machining Time ...

Calculate the Actual Machining Time Estimate the actual machining time required for the component of diameter 42 mm and length 120 mm. The available speeds are 70, 110, 176, 2

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