The document outlines the importance of line breaking in piping engineering, detailing its purpose and key considerations for implementation. It provides guidelines on when and where to apply line breaks based on pipe class changes and line number variations, along with the benefits of proper line breaking in 3D modeling. Additionally, it emphasizes how accurate line breaking leads to effective project execution and minimizes errors.

1. LINE BREAKING
PHILOSOPHY
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2. PURPOSE OF THIS SLIDE
To educate the upcoming Piping
engineers, Designers, Process
Engineers
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3. INDEX SHEET
SR.
NO.
CONTENTS NO. OF
SLIDES
1 Title slide 1
2 Purpose of the slide 1
3 Index sheets 2
4 Abbreviations 1
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4. INDEX SHEET
SR.
NO.
CONTENTS NO. OF
SLIDES
5 Where to consider the
line break?
4
6 Benefits of line breaking 2
7 Thanks Page 1
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5. ABBREVIATIONS
 PMS : PIPING MATERIAL SPECIFICATION
 P&ID : PROCESS AND INSTRUMENTATION
DIAGRAM
 BDEP : BASIC DESIGN AND ENGINEERING
PACKAGE
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6. WHERE TO CONSIDER THE LINE BREAK?
Line breaking in P&ID shall be considered as
follows:
(1) In case of pipe class change, line break shall
be considered at this breaking point. Obviously,
service & Line number shall be different from
this breaking point. Usually this break is at the
valve or Flange.
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7. WHERE TO CONSIDER THE LINE BREAK?
(2) In case of 2 different line numbers having
same pipe class and line sizes, then the break
shall usually be considered at the branch fitting
weld point.
(3) In case of 2 different line numbers with
different sizes and having same pipe class, then
the line break shall usually be considered at the
line size change.
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8. WHERE TO CONSIDER THE LINE BREAK?
Please do not confuse with number of
isometrics generation with this line breaking.
Number of isometrics generation for a single
line is a next step after considering Line
breaking as stated above.
Sample line breaking is explained in the next
slide. “Y” is indicating line break.
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9. WHERE TO CONSIDER THE LINE BREAK?
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10. BENEFITS OF LINE BREAKING
3D modelling done with proper understanding
of line breaking philosophy are having
following benefits:
 Logically & conceptually correct modelling
 Ease of understanding within the groups
 No confusions during modelling, checking
 Eliminate the chances of MTO problems
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11. BENEFITS OF LINE BREAKING
 Gives the accurate count of lines for
controlling and monitoring model progress.
 No PMS error in 3D modelling.
 Eliminates confusions during project
execution.
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