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

Evaluate the centroid of an area, Evaluate the centroid of an area: De...

Evaluate the centroid of an area: Determine the centroid of an area shown in Figure (a). Solution This problem may be attempted in two ways as illustrated in Figu

Relativity of simultaneity, Relativity of simultaneity Two events occur...

Relativity of simultaneity Two events occurring at different space co-ordinates x 1  and x 2  in an inertial frame S, are said to be simultaneous, if they occur at the same tim

Find the magnitude and position , Q1. A short vertical column consists of ...

Q1. A short vertical column consists of a channel section with the dimensions shown in Figure 1(a). The column (part of a system used to support a machine) carries a compressive p

Drive the expression for critical pressure ratio, Drive the expression for ...

Drive the expression for critical pressure ratio for steam nozzle and illustrate critical pressure. Air flows in a 200cm 2 duct at a velocity of 180 m/s, a pressure of 119 KPa

Find out change in diameter, Find out change in diameter: A cylindrica...

Find out change in diameter: A cylindrical shell, 0.8 m in a diameter and 3 m long is along with 10 mm wall thickness. If the shell is subjected into an internal pressure of 2

Find out the velocity of the bullet, Find out the velocity of the bullet: ...

Find out the velocity of the bullet: A bullet of weight W 1   = 5 N is fired into a body B 2 of weight W 2   = 45 N suspended by a string of length L = 1 metres. Because of i

Water jet machining, Water jet machining is an advanced method for cutting ...

Water jet machining is an advanced method for cutting plates using a high-velocity water jet mixed with abrasive powder. The jet comes out of a nozzle A of diameter d and follows t

Cutting technology., can you explain about merchant circle,cutting forces

can you explain about merchant circle,cutting forces

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