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29th June 2017, 10:48 AM
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Join Date: Aug 2012
Re: IIT Bombay Piping Notes

As you are looking for important notes for Certificate Course on Piping Engineering offering by IIT Bombay, so here I am providing important notes:

Certificate Course on Piping Engineering Important Notes

The vastness of the subject and limited duration of the course do not allow in-depth coverage of each and every topic. The topics which are covered in adequate details are as follows:

The topics which are covered inadequate details are as follows:
Scope of Piping Engineering
Codes and Standards
Mechanical Design Fundamentals
Pipe Hydraulics & Sizing
Development of Plot Plan
Process Piping Layout
Flexibility Analysis
Piping Elements & Specialties
Equipment Layout
Utility Piping Layout
Piping Drawing Basics
Selection of Supports & Expansion Joints

Exposure Level Lectures are delivered on some of the following topics.
Steam Engineering
Cryogenic Storage
Process Insulation
Instrumentation and Control
Transient Fluid Flow Analysis
Dynamic Analysis

INTRODUCTION
Pipes are the most delicate components in any process plant. They are also the busiestentities. They are subjected to almost all kinds of loads, intentional or unintentional. It is very important to take note of all potential loads that a piping system would encounterduring operation as well as during other stages in the life cycle of a process plant. Ignoring any such load while designing, erecting, hydro-testing, start-up shut-down,normal operation, maintenance etc. can lead to inadequate design and engineering of apiping system. The system may fail on the first occurrence of this overlooked load. Failure of a piping system may trigger a Domino effect and cause a major disaster.

Stress analysis and safe design normally require appreciation of several related concepts. An approximate list of the steps that would be involved is as follows.

1. Identify potential loads that would come on to the pipe or piping system during itsentire life.

2. Relate each one of these loads to the stresses and strains that would be developed inthe crystals/grains of the Material of Construction (MoC) of the piping system.

3. Decide the worst three dimensional stress state that the MoC can withstand withoutfailure

4. Get the cumulative effect of all the potential, loads on the 3-D stress scenario in thepiping system under consideration.

5. Alter piping system design to ensure that the stress pattern is within failure limits.

The goal of quantification and analysis of pipe stresses is to provide safe design throughthe above steps. There could be several designs that could be safe. A piping engineerwould have a lot of scope to choose from such alternatives, the one which is mosteconomical, or most suitable etc. Good piping system design is always a mixture of soundknowledge base in the basics and a lot of ingenuity.

OBJECTIVE AND SCOPE
With piping, as with other structures, the analysis of stresses may be carried to varyingdegrees of refinement. Manual systems allow for the analysis of simple systems, whereasthere are methods like chart solutions (for three-dimensional routings) and rules of thumb(for number and placement of supports) etc. involving long and tedious computations andhigh expense. But these methods have a scope and value that cannot be defined as theiraccuracy and reliability depends upon the experience and skill of the user. All suchmethods may be classified as follows:

1. Approximate methods dealing only with special piping configurations of two-, three- or four-member systems having two terminals with complete fixity and the pipinglayout usually restricted to square corners. Solutions are usually obtained from chartsor tables. The approximate methods falling into this category are limited in scope ofdirect application, but they are sometimes usable as a rough guide on more complexproblems by assuming subdivisions of the model into anchored sections fitting thecontours of the previously solved cases.

2. Methods restricted to square-corner, single-plane systems with two fixed ends, butwithout limit as to the number of members.

3. Methods adaptable to space configurations with square corners and two fixed ends.

4. Extensions of the previous methods to provide for the special properties of curved pipe by indirect means, usually a virtual length correction factor.

IIT BombayCertificate Course on Piping Engineering Important Notes




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