Requirements for vessels with thickness, Mechanical Engineering

Q. Requirements for vessels with thickness?

The following additional requirements are applicable, as specified, to Carbon Steel and Low Alloy steel pressure vessels with main shell thicknesses greater than 50.8 mm:

Prior to release from the supplier, all plate materials shall be Ultrasonically Examined (UT) in accordance with SA-435 or SA-578.
The carbon content for Carbon Steel plates and forgings shall be limited to 0.30% max.
All vessel connections shall be flanged.
All nozzles shall be of the integrally forged, self-reinforcing type.
Reinforcing pads for opening reinforcement are not permitted.
Nozzle internal projections shall be flush with the contour of the vessel.
100% radiography (RT) shall be carried out on all category A, B, and C butt welds.
Radiography shall be carried out after PWHT.
100% UT shall be carried out on all forgings over 75 mm in thickness.
100% UT shall be carried out on all category D welds.
100% Magnetic particle examination (MT) shall be carried out on all cut edges of pressure containing parts including all nozzle openings.
100% MT shall be carried out after PWHT on all areas from which temporary attachment welds have been removed.

Related Discussions:- Requirements for vessels with thickness

Thermal properties-ceramics-refractory and abrasive material, Thermal Prope...

Thermal Properties Each solid expand on heating and convention on cooling. The thermal expansion of solids is due to basic structure whether atoms occupy mean position on a fi

co2 welding, CO2 Welding CO2 Welding is a variation of GMAW. Here the ...

CO2 Welding CO2 Welding is a variation of GMAW. Here the inert gas is replaced by gas mixtures or carbon dioxide, which are chemically active. The carbon dioxide decomposes in

Explain the concept of time dilation, Explain the concept of time dilation....

Explain the concept of time dilation. Describe experimental verification of time dilation. Explain: (i) Length contraction (ii) Time Dilation in STR What are proper length an

Determine ratio between mass flow rate to condensing steam, Determine ratio...

Determine ratio between mass flow rate to condensing steam: In steam power plant, the steam 0.1 bar and 0.95 dry enters condenser and leaves as saturated liquid at 0.1 bar an

Cell control and modeling, Cell Control And Modeling Various numbers...

Cell Control And Modeling Various numbers of modeling systems and cell control have been developed to date. Researchers have worked many on three broad regions: scheduling;

Setting-up an enterprise , SETTING-UP AN ENTERPRISE : Setting up an Enter...

SETTING-UP AN ENTERPRISE : Setting up an Enterprise begins with an idea but it happens after understanding detailed guidelines and manuals on how to start up an enterprise includ

Surveying.., what is the two purposes of surveying

what is the two purposes of surveying

Engineering thermodynamics, how to prove that heat and work is path functio...

how to prove that heat and work is path function

Dual combustion cycle, In an I.C. engine operating on the Dual combustion c...

In an I.C. engine operating on the Dual combustion cycle, the temperature of the working fluid (air) at the beginning of compression is 27ºC. The ratio of the maximum and minimum p

Resultant, procedure to find resultant of several forces acting at a point

procedure to find resultant of several forces acting at a point

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages