Define maximum allowable working pressure, Mechanical Engineering

Assignment Help:

Q. Define Maximum Allowable Working Pressure?

The MAWP to be marked on the Section VIII nameplate is defined as the maximum gauge pressure permissible at the top of a completed vessel in its normal operating position at the designated coincident metal temperature for that pressure. This MAWP may be determined from the design pressure or from calculations, based on the specified nominal component thicknesses, reduced by the specified corrosion allowances.

The maximum permissible set-to-operate pressure of a single safety relief device cannot be higher than the MAWP.

A suitable margin consistent with the uncertainties with which the true maximum mean-metal temperature can be determined should be included. The design temperature for vessels shall be the maximum temperature for which a reduction in maximum allowable stress is not required (6500F (3430C) for carbon steel). If there is a limiting appurtenance, vessel design metal temperature shall be the maximum temperature allowed for that appurtenance at design pressure.


Related Discussions:- Define maximum allowable working pressure

Hardenability of steel, The hardened layer depth is the measure of harden-a...

The hardened layer depth is the measure of harden-ability. A good harden-ability will sense even thicker sections are uniformly hardened. Conversely a poor harden-ability will gene

Compound pendulum, Initial difference in radii at the junction of a compoun...

Initial difference in radii at the junction of a compound cylinder

Determine the percentage increase in power possible, An open belt connects ...

An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of Cap are 160 o and 210 o . The smaller pulley runs at 200 r.p.

Stress analysis, Figure shows rough sketch of a selected representative cri...

Figure shows rough sketch of a selected representative critical part of a "Quick Coupler" (of an earth moving equipment) made with cast steel.  You need to perform FEA analysis to

Alignment of a railway line - railways, Alignment of a Railway Line: ...

Alignment of a Railway Line: Selection of Alignment The following points must be considered in selecting the alignment of a railway line : (a) It should be as direct

Explain interference between two mating gears, What do you understand by in...

What do you understand by interference between two mating gears ? if interference between two involutes gears is to be avoided then show that the maximum length of arc of contact w

Illustrate about the three authors of iges, Illustrate about the three auth...

Illustrate about the three authors of IGES In 1977, the three authors of The Initial Graphics Exchange Specification were recognized collectively for their contributions to the

Quenching and tempering, Quenching and Tempering Cast iron pearlite st...

Quenching and Tempering Cast iron pearlite structure might be heated to lower critical temperature and after that quenched to effect extremely rapid cooling. This treatment re

Moments and forces, 3. A string of length l is fastened to two point A and ...

3. A string of length l is fastened to two point A and B at the same level at a distance ‘a’ apart. A ring of weight W can slide on the string and a horizontal force P is applied s

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