ESSO EXPLORATION &
PRODUCTION CHAD INC.
ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 1 of 14
SPECIFICATION Rev. 4 JAN 2002
Rev. Prepared By Reviewed By Approved By
Date
No. Discipline Engineering Project
Engineer Manager Engineer / Manager
1 15 JAN 96 P. CRIPPS M. MENZIES T. KEHOE
2 30 SEP 97 C. KABIRI P.R. SCHELTON M.A. JONES
3 11 MAY 01 G. HASNESS DB for MAJ
4 07 JAN 02 G. HASNESS DB DB for JAM
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 2 of 14
SPECIFICATION Rev. 4 JAN 2002
TABLE OF CONTENTS
SCOPE ....................................................................................................................................................3
SUMMARY OF ADDITIONAL REQUIREMENTS...................................................................................3
NOMENCLATURE ..................................................................................................................................4
PIPING CLASS LIST...............................................................................................................................8
GENERAL NOTES ON PIPING CLASS .................................................................................................13
LIST OF TABLES
TABLE 1..................................................................................................................................................3
TABLE 2..................................................................................................................................................9
TABLE 3..................................................................................................................................................13
Revision 4 Memo
JAN\2002 Revised Table 2 to incorporate piping classes and services created for this project and
delete those class designations not required.
ESSO EXPLORATION &
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 3 of 14
SPECIFICATION Rev. 4 JAN 2002
SCOPE
1.1 This specification outlines the mandatory requirements for the system of standard
piping/pipeline classes and shall be used with the whole of ECS Section 3, Piping.
1.2 An asterisk (*) indicates that additional information is provided by ESSO in an
addendum to this specification.
1.3 A pound sign (#) indicates that ESSO review/approval is required before design is
finalized or equipment is purchased.
SUMMARY OF ADDITIONAL REQUIREMENTS
2.1 The following specifications, codes and standards listed in Table 1 form a part of this
specification.
2.2 The equipment and materials used shall conform to the latest editions, revisions and
addenda of the codes, standards and regulations listed in Table 1.
TABLE 1
ESSO Chad Specifications
1-1-2 Equipment, Instrumentation and Line Designation
3-30-3 Standard Piping Classes Tables
3-30-200 Pipe Wall Thickness Tables
3-30-201 Branch Connection Table
API
API 602 Compact Steel Gate Valves - Flanged, Threaded, Welding and
Extended - Body Ends.
ASME Codes and Standards
B16.34 Valves - Flanged Threaded and Welding End
AWWA
C207 Steel Pipe Flanges For Waterworks Service - Sizes 4 in.
Through 144 in.
# 2.3 The standard piping classes cover the commonly encountered conditions in the oil
production, gas production and produced water treatment facilities. Other classes can
be developed for services not already covered by the standard classes, but approval by
ESSO is required.
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 4 of 14
SPECIFICATION Rev. 4 JAN 2002
NOMENCLATURE
3.1 The following is a typical line identification system, which shall be used to identify a line.
4 - CAAG1C - NG - 01 - 25 - H - E
Tracer Type
Insulation Type
Insulation Thickness (mm)
Line number
Line Service Designation
Piping Class
Nominal Pipe Size (NPS)
Refer to ECS 1-1-2 and Article 3.2 below for detailed information.
3.2 A typical piping class designation appears as:
C A AG 1 SC
Additional Requirements
Corrosion Allowance
Material
Temperature Range
Flange Rating
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 5 of 14
SPECIFICATION Rev. 4 JAN 2002
R4 3.3 The flange rating is represented by a character as follows:
0 Special R 2500 RF
A 125 FF S 2500 RJ
B 125 LW (Note 1) T 2000 API
C 150 RF U 3000 API
E 250 RF V 5000 API
F 300 RF W 10 000 API
H 400 RF X 15 000 API
K 600 RF Y 20 000 API
N 900 RF Z Tubing (No flanges)
Q 1500 RF
Notes:
1. 125 light weight flange conforms to AWWA Standard C207, Class D.
R4
3.4 The temperature range is represented by a character given below (temperature range
represents design limits for materials). Some materials, i.e. PVC or galvanized pipe,
may be restricted to a temperature limit within the specified range as noted on the
Piping Class Tables).
A from -29ºC to +260ºC
B from -29ºC to +399ºC
C from -29ºC to +482ºC
D from -29ºC to +649ºC
E from -45ºC to +260ºC
F from -101ºC to +260ºC
G from -184ºC to +260ºC
H from -45ºC to +399ºC
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 6 of 14
SPECIFICATION Rev. 4 JAN 2002
3.5 The material is identified by a combination of two characters. The first designates the
material group and the second designates a particular material in that group. If an
additional material is selected, the next two character combination is assigned to the
appropriate group.
a. The carbon steel/iron group is identified by the letter "A" and by a second letter
in alphabetical sequence.
AA Cast Iron
AB Cast Iron/mechanical joint
AC Ductile Iron/mechanical joint
AD Galvanized steel
AJ ASTM A53 Gr B, ERW
AG ASTM A106 Gr. B, Seamless
AK ASTM A333 6, seamless
AL ASTM A179 seamless tubing
AM ASTM A334 6, seamless tubing
AN API 5L ERW
AP API 5L SAW
b. The alloy steel group is identified by the letter "B" and by a second letter in
alphabetical sequence.
BA ASTM A335 P1 (C-1/2 Mo)
BB ASTM A335 P11 (1-1/4 Cr, 1/2 Mo)
BC ASTM A335 P22 (2-1/4 Cr, 1 Mo)
BD ASTM A335 P5 (5 Cr, 1/2 Mo)
BE ASTM A335 P9 (9 Cr, 1 Mo)
BF ASTM A333 3 (3-1/2 Ni)
BG ASTM A334 3 (3-1/2 Ni) seamless tubing
BH ASTM A333 T5 (5cr, 1/2 Mo) seamless tubing
BJ ASTM A333 8 (9 Ni)
c. The stainless steel group is identified by the letter "C" and by a second letter in
alphabetical sequence.
CA ASTM A312 TP304L
CB ASTM A312 TP316L
CC ASTM A312 TP347
CD ASTM A268 TP410, seamless tubing
CE ASTM A269 TP304L, seamless tubing
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STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 7 of 14
SPECIFICATION Rev. 4 JAN 2002
CF ASTM A213 TP304L, seamless tubing, heat exchanger or boiler
service
CG ASTM A312 TP304L with A352 - LC3 (3-1/2 Ni) valves
CH ASTM A790 UNS 31803, Duplex stainless steel pipe
CJ ASTM A269 TP316, seamless tubing
d. The non-ferrous metal group is identified by the letter "D" and by a second letter
in alphabetical sequence.
DA aluminum ASTM B241
DB brass ASTM B283
DC copper ASTM B42
DD Monel ASTM B165
DE Inconel ASTM B167
DF Incoloy ASTM B407
DG aluminum ASTM B210, seamless tubing
DH copper ASTM B75, seamless tubing
DN Hastelloy ASTM B619
e. The non-metallic pipe group is identified by the letter "F" and by a second letter
in alphabetical sequence.
FA-PVC ASTM D1785
FB-RTRP (Fibreglass) ASTM D2517 or API 15 HR
FC-PE (Polyethylene) ASTM D2447
FD-ABS ASTM D1527
FE-CPVC ASTM F441
FF-PE Tubing ASTM D2737
FG-PVC Tubing ASTM D2740
FH-nylon Tubing ASTM D2740
FJ-plastic-lined steel ASTM F491 (Poly-vinylidene Fluoride) or
ASTM F492
FK-RTRP with Resin Lining ASTM D2517
(Fibreglass)
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 8 of 14
SPECIFICATION Rev. 4 JAN 2002
3.6 The corrosion allowance is represented by a single number as follows:
Symbol Corrosion Allowance
0- 0 mm
1- 1.5 mm
2- 3.0 mm
3- 4.5 mm
4- 6.0 mm
PIPING CLASS LIST
4.1 The piping classes are listed in Table 2.
4.2 The class listed with each service is a standard minimum requirement which shall be
upgraded to the necessary flange rating (first character) as detailed in Article 3.3,
temperature rating (second character) as detailed in Article 3.4 and corrosion allowance
(fifth character) as detailed in Article 3.6, as required by the design conditions.
# 4.3 Upgrade of materials is acceptable with ESSO approval (e.g. impact tested material in
lieu of standard material).
ESSO EXPLORATION &
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 9 of 14
SPECIFICATION Rev. 4 JAN 2002
TABLE 2
R4
PIPING CLASS LIST
Service Temp. °C Class Material Notes
Air-Instrument 10 to 49 CAAD0 A106-B Galvanized
Air-Utility 10 to 260 CAAG0 A106-B
Chemical Injection 10 to 260 ZACJ0 316 SS Tubing
ZACJ0A
Corrosive Services 10 to 260 CACB5 316L SS
FACB5
Crude Oil 10 to 260 CAAG1 A106-B
10 to 72 CAAG14 A106-B
10 to 260 CAAG2 A106-B
10 to 260 FAAG2 A106-B
10 to 370 FAAG2A A106-B
10 to 79 FAAN14 API 5L – X
10 to 79 FAAN18 API 5L – X
10 to 79 FAAN2 API 5L – X
10 to 79 FAAN24 API 5L – X
10 to 79 FAAN28 API 5L – X
10 to 71 FAAP04 API 5L – X
10 to 96 KAAN14 API 5L – X
10 to 96 KAAN18 API 5L – X
10 to 96 KAAN2 API 5L – X
10 to 96 KAAN24 API 5L – X
10 to 96 KAAN24A API 5L – X
10 to 96 KAAN28 API 5L – X
10 to 96 NAAN2 API 5L – X
10 to 79 NAAN24 API 5L – X
10 to 96 NAAN28 API 5L – X
Crude Oil Pipeline 10 to 77 KAAP04 API 5L – X
10 to 77 KAAP14
10 to 77 NAAP04
Deluge & Foam 10 to 46 0AAG2F A106-B Galvanized
Diesel 10 to 260 CAAG1 A106-B
Engine/Turbine 10 to 480 0AAG24 A106-B
Exhaust
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 10 of 14
SPECIFICATION Rev. 4 JAN 2002
PIPING CLASS LIST
Service Temp. °C Class Material Notes
Gas 10 to 96 KAAN28 API 5L – X
NAAN2
NAAN28
Gas – Fuel 10 to 260 CAAG1 A106-B
Gas – Purge 10 to 260 CAAG0 A106-B
Hydrocarbon 10 to 260 CAAG1 A106-B
Liquids
CAAG2
FAAG1
FAAG2
KAAG1
KAAG2
Hydrocarbon Vapor 10 to 260 CAAG1 A106-B
CAAG2
FAAG1
FAAG2
KAAG1
KAAG2
Nitrogen 10 to 260 CAAG2 A106-B
Oil-Fuel 10 to 260 CAAG1 A106-B
10 to 77 KAAP14 API 5L-X
Oil-Hot 10 to 316 FAAG1H A106-B
Oil-Lube 10 to 93 CACA0 304L SS
FACA0
Pump Station Flare 10 to 399 CAAG2A A106-B
Water - Fire 10 to 46 0AAG2 A106-B
Water – Potable 10 to 149 CAAD0 A106-B Galvanized
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 11 of 14
SPECIFICATION Rev. 4 JAN 2002
PIPING CLASS LIST
Service Temp. °C Class Material Notes
Water – Produced 10 to 260 CAAG1 A106-B
10 to 72 CAAG14 A106-B
10 to 260 CAAG2 A106-B
10 to 260 FAAG2 A106-B
10 to 79 FAAN2 API 5L – X
10 to 79 FAAN24 API 5L – X
10 to 96 NAAN2 API 5L – X
10 to 79 NAAN24 API 5L – X
10 to 96 NAAN28 API 5L – X
Water – Raw 10 to 46 0AFB0A RTRP
Water – Soft 10 to 149 CAAD0 A106-B Galvanized
U/G Brine 10 to 121 0AFB0 RTRP
U/G Closed Drains 10 to 93 CAAG2U A106-B
U/G Crude Oil 10 to 93 CAAG2U A106-B
10 to 79 FAAG2U A106-B
10 to 79 FAAN18U API 5L – X
10 to 79 FAAN24U API 5L – X
10 to 79 FAAN28U API 5L – X
10 to 79 FAAN28UA API 5L – X
10 to 96 KAAN18U API 5L – X
10 to 96 KAAN24U API 5L – X
10 to 96 KAAN24UA API 5L – X
10 to 96 KAAN28U API 5L – X
10 to 96 KAAN28UA API 5L – X
10 to 77 KAAP04U API 5L – X
10 TO 96 NAAN2U API 5L – X
10 to 96 NAAN28U API 5L – X
10 to 96 NAAN28UA API 5L – X
U/G Crude Oil 10 to 79 FAAG2U A106-B
w/Water
FAFB08U RTRP – API
15HR
U/G Firewater 10 to 46 0AAC0 Ductile Iron Cement Lined
U/G Firewater 10 to 50 0AFC0U HDPE
Construction Corp
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 12 of 14
SPECIFICATION Rev. 4 JAN 2002
PIPING CLASS LIST
Service Temp. °C Class Material Notes
U/G Gas 10 to 96 KAAN28U API 5L – X
KAAN28UA
NAAN28U
NAAN28UA
U/G Hydrocarbon 10 to 93 CAAG2U
Liquid A106-B
10 to 79 FAAG2U
U/G Hydrocarbon 10 to 93 CAAG2U
Vapor A106-B
10 to 79 FAAG2U
U/G Irrigation 10 to 46 0AFA0B PVC
Water
U/G Nitrogen 10 to 93 CAAG2U A106-B
U/G Open Drain 10 to 121 0AFB0 RTRP
U/G Potable Water 10 to 46 0AFE0 CPVC
U/G Pressure 10 to 38 0AFA0A PVC
Sanitary Sewer
U/G Produced 10 to 121 0AFB0 RTRP
Water
10 to 93 CAAG2U A106-B
10 to 79 FAAG2U A106-B
10 to 79 FAAN24U API 5L – X
10 to 79 FAFB04U RTRP API
15HR
API 5L – X
10 to 96 NAAN28U
API 5L – X
10 to 96 NAAN28UA
U/G Raw Water 10 to 46 0AAC0A Ductile Iron Cement Lined
U/G Sewage 10 to 30 0AFA0 PVC
0AFA0C PVC -
Perforated
U/G Sludge 10 to 121 0AFB0 RTRP
U/G Storm Drain 10 to 30 0AFA0 PVC
U/G Utility Water 10 to 46 0AFE0 CPVC
U/G Soft Water 10 to 46 0AFE0 CPVC
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ECS 3-30-1
STANDARD PIPING CLASSES
CLASSIFICATION AND USE Page 13 of 14
SPECIFICATION Rev. 4 JAN 2002
GENERAL NOTES ON PIPING CLASS TABLES
5.1 The standard piping classes are individual tables, indicating the specific requirements
for that class.
5.2 The Piping Class Table notes are documented in a separate section at the beginning of
ECS 3-30-3.
5.3 Pipe wall thickness calculations are documented separately in ECS 3-30-200, Pipe Wall
Thickness Tables.
5.4 Allowable branch connection types are tabulated in ECS 3-30-201, Branch Connection
Table.
5.5 Where it is not indicated otherwise, rating designation represents a "Pressure Class"
where rating is identical to ASME B16.34 or API 602 rating.
5.6 The abbreviations used in the piping and valve class sheets are shown in Table 3.
TABLE 3
ANSI American National Standards Institute
API American Petroleum Institute
ASB asbestos
ASTM American Society for Testing and Materials
BW butt weld
CA corrosion allowance
corr. corrugated
CTC Compression type connections
CWP cold working pressure or MOP at 38°C
EFW electric fusion welded
ERW electric resistance welded
FEP fluorinated ethylene-propylene
FF flat face
flex. flexible
Flg. flanged
hard. hardened
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ECS 3-30-1
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CLASSIFICATION AND USE Page 14 of 14
SPECIFICATION Rev. 4 JAN 2002
HB Brinnel hardness scale
HDPE high density polyethylene
HF hard-faced
HRC Rockwell "C" hardness scale
min. minimum
MOP maximum operating pressure
Nom. nominal
non-asb Nonasbestos
NPS nominal pipe size
OD outside diameter
OS&Y outside screw and yoke
PE polyethylene
PP polypropylene
PTFE teflon
PVC polyvinyl chloride
RF raised face
RJ ring joint
RTRP reinforced thermosetting resin pipe (fibreglass)
Sch. schedule
smls seamless
soc solvent weld connection (plastic pipe)
SS stainless steel
Std. standard
S.W. socket weld (valves use SW)
TH threaded
wt. weight
WT wall thickness
