Alignment of piping flanges, Mechanical Engineering

Assignment Help:

Q. Alignment of piping flanges?

Alignment of piping flanges shall be in accordance with ASME B16.5. This code specifies that:

• Flange centerline misalignment must be within 1/8 in (3 mm) maximum offset.

• Flange planar misalignment must be parallel within 1/16 in per foot (5 mm per meter) of diameter.

• Flange torsional misalignment must be within 1/8 in (3 mm) maximum rotational offset.

Install the gasket on the gasket seating surface and bring the mating flange in contact with the gasket.

Care shall be taken to insure the proper seating and centering of the gasket. Note that spiral wound and double jacketed gaskets are designed for one-time installation and shall not be reused.

Holding gaskets in place often presents a problem, and pipe fitters tend to use greases, pastes, or other substances to stick them to the flange face. This practice should be avoided if at all possible, since it tends to cause serious in-service leaks. If absolutely necessary to use something to hold the gasket in place, thin adhesive tapes may be used, but only along the outside edges of the gasket. Extensive care must be taken to ensure that it does not infringe on the seating surfaces. Tape on the seating surfaces will deform the gasket when made-up; it will then burn or melt out in operation and leakage will occur.


Related Discussions:- Alignment of piping flanges

Steam hot service insluation thicknesses, Q. Steam Hot Service Insluation T...

Q. Steam Hot Service Insluation Thicknesses? Steam Hot Service Insluation Thicknesses are specified based on the following design criteria: Average Annual Climatic Condi

Define the side rake angle, Define the Side Rake Angle? It measured the...

Define the Side Rake Angle? It measured the slope of top surface of the tool to the side in the direction perpendicular to longitudinal axis it also guides the direction of chi

Explain sand and moulding sands, Q. Explain Sand and moulding sands? Sa...

Q. Explain Sand and moulding sands? Sand according to the amount of clayey matter they contain, the moulding sands are classified as: • Silica sand: Up to 20% clay. •

Explain about the raft foundations, Explain about the Raft Foundations ...

Explain about the Raft Foundations The raft foundations are generally used for large loaded area on soils of low bearing capacity. They are of particular use when soils are of

Illustrate the specification of pddi, Illustrate the specification of PDDI ...

Illustrate the specification of PDDI (i)  The 3-D geometry of the product which is defined by a set of curves, surfaces and volumes. (ii) The topology which describes the se

Calculate the maximum stresses in the end plate, The end plate of a tube is...

The end plate of a tube is made from 4mm thick steel plate as seen in the figure below. If a 30mm diameter rod welded to the plate is subjected to a force of 10kN, what would be th

Processes , example on operation sheet?

example on operation sheet?

Scope of corrosion assessment design, Q. Scope of corrosion assessment desi...

Q. Scope of corrosion assessment design? The purpose of this guideline is to describe the common corrosion damaging modes and mitigation methods and provides recommended materi

Advantages of resistance welding, Advantages of resistance welding   ...

Advantages of resistance welding   1. Resistance welding is very fast compared to arc welding. 2. Almost any combination of metals can be resistance welded provided necessa

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