Dep 31.10.03.10 - Symbols and Identification System - Mechanical
Dep 31.10.03.10 - Symbols and Identification System - Mechanical
Dep 31.10.03.10 - Symbols and Identification System - Mechanical
DEP 31.10.03.10-Gen.
February 2012
PREFACE
DEP (Design and Engineering Practice) publications reflect the views, at the time of publication, of Shell Global Solutions
International B.V. (Shell GSI) and, in some cases, of other Shell Companies.
These views are based on the experience acquired during involvement with the design, construction, operation and
maintenance of processing units and facilities. Where deemed appropriate DEPs are based on, or reference international,
regional, national and industry standards.
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achieve maximum technical and economic benefit from standardization.
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quality of their work and the attainment of the required design and engineering standards. In particular, for those
requirements not specifically covered, the Principal will typically expect them to follow those design and engineering
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DEP 31.10.03.10-Gen.
February 2012
Page 3
TABLE OF CONTENTS
1. INTRODUCTION ........................................................................................................4
1.1 SCOPE........................................................................................................................4
1.2 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS .........4
1.3 DEFINITIONS AND ABBREVIATIONS ......................................................................4
1.4 CROSS-REFERENCES .............................................................................................5
1.5 SUMMARY OF MAIN CHANGES...............................................................................5
1.6 COMMENTS ON THIS DEP .......................................................................................5
2. GENERAL...................................................................................................................6
3. IDENTIFICATION OF EQUIPMENT...........................................................................7
3.1 GENERAL ...................................................................................................................7
3.2 EQUIPMENT FUNCTION CODE "AA".......................................................................7
3.3 PROCESS UNIT Number "XXX" ................................................................................7
3.4 SEQUENCE NUMBER "YY".......................................................................................7
3.5 IDENTICAL EQUIPMENT CODE "Z" .........................................................................7
3.6 EXAMPLES OF EQUIPMENT NUMBERS .................................................................7
3.7 EXAMPLES OF THE LETTER CODES OF TABLE 1 ..............................................10
3.8 EQUIPMENT NUMBERING OF PARALLEL TRAINS..............................................10
3.9 EQUIPMENT NUMBERING OF PACKAGE UNITS .................................................10
3.10 SPECIAL PIPING ITEMS..........................................................................................10
4. IDENTIFICATION OF PIPING ..................................................................................11
4.1 GENERAL .................................................................................................................11
4.2 LINE NUMBERING ...................................................................................................11
4.3 INSULATION CODES...............................................................................................13
4.4 EXAMPLES OF LINE NUMBERS ............................................................................14
5. REFERENCES .........................................................................................................15
DEP 31.10.03.10-Gen.
February 2012
Page 4
1. INTRODUCTION
1.1 SCOPE
This DEP specifies requirements and gives recommendations for:
• Symbols for the graphical presentation of equipment and piping in Process Flow
Schemes (PFS), Utility Flow Schemes (UFS) Process Engineering Flow Schemes
(PEFS) and Utility Engineering Flow Schemes (UEFS).
• Identification numbering system for equipment and piping in PFS, UFS, PEFS, UEFS
and other documents.
This is a revision of the DEP of the same number dated December 2007; a summary of the
main changes is given in (1.5).
Term Definition
Very toxic (substances) substances that are very hazardous for the environment
or human health, as specified in DEP 01.00.01.30-Gen.
(which also identifies "toxic" substances by reference to
chemical substances databases).
DEP 31.10.03.10-Gen.
February 2012
Page 5
1.3.3 Abbreviations
Term Definition
PEFS Process Engineering Flow Scheme
PFS Process Flow Scheme
UEFS Utility Engineering Flow Scheme
UFS Utility Flow Scheme
1.4 CROSS-REFERENCES
Where cross-references to other parts of this DEP are made, the referenced section
number is shown in brackets. Other documents referenced by this DEP are listed in (5).
- 3.10 Numbering system for special piping items has been added.
2. GENERAL
Mechanical symbols in PFS, UFS, PEFS and UEFS shall be in accordance with Standard
Drawing S 02.002. These symbols may also be used in other documents where required.
Standard Drawing S 02.002 is produced so that the symbols can easily be copied in
electronic form. For equipment symbols not shown in this DEP, a simple outline should be
drawn, together with a short description of its function. For very complicated equipment
hook-ups a rectangle (dot-and-dash line) should be drawn with a reference to a separate
scheme.
Certain basic symbols have been included for use only in PFS. The other symbols may be
applied in all documents mentioned above.
If a symbol is not adequate to indicate the type or function of a piece of equipment,
additional notes should be located next to the symbol.
For symbols not shown in Standard Drawing S 02.002, the symbols in BS 1553-1 shall be
used. For coal handling and preparation plants, the symbols in ISO 561 shall be used.
For instrument symbols and identification, and valve actuating methods, reference is made
to DEP 32.10.03.10-Gen. and Standard Drawing S 37.000.
For electrical symbols, reference is made to IEC 60617 and Standard Drawing S 64.000.
DEP 31.10.03.10-Gen.
February 2012
Page 7
3. IDENTIFICATION OF EQUIPMENT
3.1 GENERAL
All equipment shall be identified by a tag number of the format:
AA-xxxYYz,
in which
"AA" is a one or two-letter code identifying the equipment function in accordance with
Table 1; see (3.2);
"XXX" is a one, two-digit or three-digit number used to identify the process unit; see (3.3);
"YY" is a two-digit sequence number; see (3.4) and
"Z" is a one-letter code applied only to denote identical equipment items used for the
same purpose. See (3.5).
NOTE: Refer to (3.8) for the equipment numbering of parallel trains.
Q Not assigned
R Pig Receivers
S Gravity and mechanical separators, e.g. thickeners, Shell, Fan Silencer
cyclones, expellers, centrifuges, filters, dust
collectors, sieves, hydrocyclones
T Atmospheric storage tanks, interceptors, neutralising Turbine
pits (steam or gas), Tube
U Not assigned
V Vessels, incl. pressure storage vessels, silos and
hoppers
W Weighing equipment, wellheads
X Stationary transport equipment, material handling
equipment, cranes, hoists
Y Special piping item
Z Bulk loading arms, Offloading buoys
NOTES: 1. Where a choice has to be made between two or more letters, the most important function of the
equipment shall prevail. If, for example, a jet is used for mixing purposes, M is preferred to J.
2. The letters I and O should not be used to avoid confusion with the numbers 1 and 0.
DEP 31.10.03.10-Gen.
February 2012
Page 10
4. IDENTIFICATION OF PIPING
4.1 GENERAL
All piping in PEFS, UEFS and piping drawings shall be identified by a line number
consisting of the following components (see 4.2).
Line number example:
100 P3001 - 31011- 4EN
NOTE: On offshore platforms, a location code may be inserted between the piping class identification and the
insulation code. If so applied, the Principal shall define the location codes.
Example 3 Example 4
100-G152125-61011-NAN 100-W8003-17061-NN
in which: in which:
100 = nominal pipe 100 = nominal pipe
diameter (DN) diameter (DN)
G = fluid code for gas, W = water, see (4.2)
see (4.2)
152 = unit identifier for 8 = unit identifier unit
process unit 15200, 600, see (3.3)
see (3.3)
125 = line sequence 003 = line sub-number
number
G150125 = line number W8003 = line number
5. REFERENCES
In this DEP, reference is made to the following publications:
NOTES: 1. Unless specifically designated by date, the latest edition of each publication shall be used,
together with any amendments/supplements/revisions thereto.
2. The DEPs and most referenced external standards are available to Shell staff on the SWW (Shell
Wide Web) at http://sww.shell.com/standards/.
SHELL STANDARDS
Definition of temperature, pressure and toxicity levels DEP 01.00.01.30-Gen.
Piping classes - Refining and chemicals DEP 31.38.01.12-Gen.
Piping classes - Exploration and production DEP 31.38.01.15-Gen.
Instrumentation symbols and identification on process DEP 32.10.03.10-Gen.
engineering flow schemes
STANDARD DRAWINGS
Mechanical symbols for use on flow schemes: S 02.002
sheet 1 pipe symbols and pipe indicators
sheet 2 general and valves
sheet 3 vessels and tanks
sheet 4 columns and internals
sheet 5 pumps, compressors, blowers and fans
sheet 6 separators and filters
sheet 7 mixers
sheet 8 heat transfer equipment
sheet 9 drying equipment
sheet 10 furnaces
sheet 11 miscellaneous equipment
sheet 12 data identification (SI units)
sheet 13 data identification (US Customary units)
PEFS legend for instrument symbols and identification – based S 37.000
on ISO:
sheets 1 - 5
Electrical symbols in addition to IEC 617 S 64.000
BRITISH STANDARD
Specification for graphical symbols for general
engineering – Part 1: Piping systems and plant BS 1553-1
INTERNATIONAL STANDARDS
Graphical symbols for diagrams IEC 60617
Coal preparation plant – Graphical symbols ISO 561