ESSO EXPLORATION &

PRODUCTION CHAD INC.

ECS 1-1-3

DRAWING STANDARDS
Page 1 of 33

Rev. 4 May 2010

SPECIFICATION

Rev. Prepared By Reviewed By Approved By

Date
No. Discipline Engineering Project
Engineer Manager Engineer / Manager
0 05 JAN 96 Illegible Signature
1 0CT 95 A.A. Moussallem B. Moore M. Menzies
2 Oct 2007 C. Stienbarger Matt Vines Robert S. McKenny
3 FEB 2009 C. Stienbarger Matt Vines David J. Slagle
4 May 2010 C. Stienbarger Pier Mane David J. Slagle

Revision 4 Memo
Changed 2.6.2 Added P for Miakeri
Oct\2007
FEB 2009 Changed 2.6.2 Added T for Timbre, Revised Table 2 – to align Manifold designations with
currently installed units.
May 2010 Changed Table 2 to add new manifolds
 ESSO EXPLORATION &
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ECS 1-1-3

DRAWING STANDARDS
Page 2 of 33

Rev. 4 May 2010

SPECIFICATION

TABLE OF CONTENTS
GENERAL...............................................................................................................................................3

ELECTRICAL DRAWINGS ....................................................................................................................13

INSTRUMENTATION AND AUTOMATION DRAWINGS......................................................................15

FACILITY LAYOUT AND PIPING DRAWINGS.....................................................................................16

CIVIL/STRUCTURAL AND ARCHITECTURAL DRAWINGS ...............................................................19

PIPELINE DRAWINGS...........................................................................................................................22

PROJECT ADDENDUM .........................................................................................................................33

LIST OF TABLES

TABLE 1 .................................................................................................................................................3

FIGURE 1................................................................................................................................................5

TABLE 2 .................................................................................................................................................7

TABLE 3 .................................................................................................................................................12

TABLE 4 .................................................................................................................................................14

ATTACHMENT 1 ....................................................................................................................................25

ATTACHMENT 2 ....................................................................................................................................26

ATTACHMENT 3 ....................................................................................................................................27

ATTACHMENT 4 ....................................................................................................................................28

ATTACHMENT 5 ....................................................................................................................................29

ATTACHMENT 6 ....................................................................................................................................31

ATTACHMENT 7 ....................................................................................................................................32

CHAD DOBA DEVELOPMENT..............................................................................................................33

 ESSO EXPLORATION &
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ECS 1-1-3

DRAWING STANDARDS
Page 3 of 33

Rev. 4 May 2010

SPECIFICATION

SCOPE

1.1 This specification covers mandatory requirements governing the minimum information
to be shown on drawings, drawing sizes and format of the following drawings for the
Chad Doba Development Project:

• Piping and Instrumentation Drawings (P&IDs).

• Electrical Drawings.
• Instrument and Automation Drawings.
• Facility Layout and Piping Drawings.
• Pipeline Drawings.
• Civil/Structural and Architectural Drawings.

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.

GENERAL

2.1 Table 1 lists the standards which shall be used with 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

ECS 1-1-1 Document Numbering
ECS 1-1-2 Equipment, Instrumentation and Line Designation
ECS 1-1-4 CADD Drafting Standards
ISA Standards
S5.1 Instrumentation Symbols and Identification
S5.2 Binary Logic Diagrams for Process Operations
S5.4 Instrument Loop Diagrams
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ECS 1-1-3

DRAWING STANDARDS
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Rev. 4 May 2010

SPECIFICATION

Drawing Sizes

2.3.1 The use of roll size drawings is not permitted.

2.3.2 The following drawing sizes are acceptable:

a. "A" size 8 1/2" x 11"

b. "B" size 11" x 17"
c. "C" size 17" x 22"
d. "D" size 22" x 34"

2.3.3 The "E" size drawings (34" x 44") are allowed only upon ESSO's approval.

2.3.4 Metric size drawings (A0, A1, A2, A3, A4 and B1) are allowed only upon ESSO's
approval.

2.3.5 The use of any non-standard sizes must be approved by ESSO.

Lettering

2.4.1 All lettering on a drawing shall be as follows:

a. Same style.
b. Uppercase letters (capitals).
c. Minimum 3.0 mm high (minimum 2.0 mm high for CADD drawings).

Title Block

2.5.1 The title block lettering shall be 5 or 6 mm high for board drawings and 4 mm high for
CADD drawings (D size). See Figure 1 for typical title block layout.
 ESSO EXPLORATION &
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ECS 1-1-3

DRAWING STANDARDS
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Rev. 4 May 2010

SPECIFICATION

ESSO EXPLORATION
AND DEVELOPMENTCHAD INC.
CHADDEVELOPMENT PROJECT
FIELDLOCATIONANDFACILITY DESCRIPTION
AREAORSYSTEMS DESCRIPTION
DRAWINGDESCRIPTION
SCALE EEPCDRAWINGNUMBER REV
CONTRACTOR’S NAME NTS

Do not use “CHAD DOBA DEVELOPMENT PROJECT” after January 2009

FIGURE 1
TYPICAL TITLE BLOCK LAYOUT
 ESSO EXPLORATION &
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ECS 1-1-3

DRAWING STANDARDS
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Rev. 4 May 2010

SPECIFICATION

Drawing Numbering

2.6.1 The drawing number will take the following general format:
[Area]-[Subdivision]-][Discipline and Drawing Identifier]-[Serial Number]
2.6.2 The document code is defined as follows:

a. Area - 4 characters defining the operating area.

b. Subdivision - 4 characters, ABBB, consisting of the following:

• A - 1 character describing the location of the facilities as follows:

G General (Total Area)

K Kome Field
M Miandoum Field
B Bolobo Field
C Operations Center
D Moundouli
N Nya
P Poutouguem (Maikeri)
T Timbre Field

• BBB - 3 characters describing the type of facilities as follows:

(000 - 999)
000 General
100 Wellsites
150-199 Well Manifold & Testing Facilities
200 Infield Pipelines
250 Trunklines
300 Gathering Stations
330 Kome Produced Wwater Beneficial Reuse
350 Bolobo Pump Station BP-1
351 Kome Pump Station KP-1
352 Kome Pump Station KP-2
400 Central Treating Facilities
500 Power Generation
550 Power Distribution/Transmission
575 Crude Oil Topping Plant
600 Electrical Substations
650 Control Stations/Rooms
700 Housing/Community
750 Airfield
800 Roads
850 Utilities/Support Facilities
900 Communications Facilities
950 Temporary Facilities
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Rev. 4 May 2010

SPECIFICATION

• For each field Manifold Site, the designations listed in Table 2 shall be used
for BBB.

TABLE 2
Field Manifold Designation

Manifold Site Location

K151 Wellsite K41

K152 Wellsite K36
K153 Wellsite K222
K154 Wellsite K27
K155 Wellsite K19
K156 Wellsite K14
K157 Wellsite K9
K158 Wellsite K4
K159 Wellsite K304
K160 Wellsite K404
K161 Kome Gathering Station
Water Injection Manifold K162
K162
RSV Site K163 (002 & 003)
K163
RSV Site K152 (002, 003, 004, 005) RSV Site K153
K164
(007)
Water Injection Manifold K165
K165
Water Injection Manifold K166
K166
Water Injection Manifold K167
K167
K168 Polymer Pilot Manifold K168
K169 South East Water Injection K169
K170 New manifold for additional wells
Bolobo Well Site B34
B151
Bolobo Well Site B10
B152
Bolobo Gathering Station
B153
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SPECIFICATION

D151 Moundouli Site

Miandoum Wellsite M033
M151
Miandoum Wellsite M059
M152
Miandoum Gathering Station
M153
M154 Miandoum Well Site M060
M155 Miandoum Water Injection Manifold
N151 NYA Site

P151 Poutouguem (Maikeri) Site

c. Discipline and Document Identifier - 4 characters, CCDD, consisting of the

following:

• CC 2 characters identifying the engineering discipline/area per the

following list:
00 General
03 Right of Way
10 Facility Layouts
20 Civil
25 Environmental
30 Architectural
40 Pipeline
50 Process
60 Piping
70 Mechanical/Equipment Details
80 Instrumentation & Automation
85 Communications
86 Safety
90 Electrical
• DD 2 characters identifying the nature of the document, for example:
DS Specification Sheet
EC Design Criteria
ED Data Sheet
EG Engineering General
EL Equipment list
EM Design Basis Memorandum/Document
IL Instrument List
II Instrument Index
LL Line List
ML Motor List
RP Report
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Rev. 4 May 2010

SPECIFICATION

d. Serial Number - 4 characters allocating a sequential serial number to all

documents starting with 0001. Document control will issue a specific set of
numbers for each specific project.

2.6.3 Any changes to the Subdivision code must be approved by ESSO.

2.6.4 Additional values of DD for the Discipline and Document Identifier shall be added as
required following approval by ESSO.

Revision Numbering

2.7.1 The Contractor shall develop a drawing revision numbering procedure suitable for the
project, to be approved by ESSO.

CADD Standards

2.8.1 ECS 1-1-4 describes the formats and general structure that must be used in preparing
all CADD drawings.

PIPING AND INSTRUMENTATION DIAGRAM (P&IDS)

3.1 P&IDS are to be laid out using the "D" size format. The bottom zone is reserved for
rotating equipment and their respective identification information. The middle portion
contains all of the other equipment as well as their associated lines. The top zone is
reserved for the identification information of all the equipment located in the middle zone
of the P&ID. The middle zone of the drawing is the "pipe alley" containing lines which
enter and leave the sheet, plus lines running between rotating equipment and other
pieces of equipment on the drawings.

3.2 The left and right margins of the drawings will have arrows at the end of the pipe alleys
for match line drawing number identification, in which the connecting drawing number
will be indicated.

3.3 Notes that apply to a P&ID are located in the upper right hand corner of the P&ID sheet;
this area is to be left open for this purpose.

3.4 On all Utility Distribution P&IDs, the header and sub-headers shall follow the layout of
pipe racks. This layout (not to scale) shall indicate all areas, equipment and individual
branches in their relative geographic locations.

Lines

3.5.1 Primary lines shall be drawn "heavy" and secondary lines shall be drawn "light".
Secondary lines shall be broken to cross primary lines. Horizontal lines shall be broken
to cross vertical lines of equivalent weight. Instrument lines shall be broken when
crossing piping. The P&ID shall be logically arranged to minimize crossed lines.
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SPECIFICATION

3.5.2 Generally, all process lines entering and leaving the diagram shall terminate at the left-
hand or right-hand end of the pipe alley with an arrow box. The connecting drawing
number shall be shown in the arrow box. Whenever possible, a line should appear at
the same position in the pipe alley on adjoining diagrams.

3.5.3 The full line number will be shown on top of the line entering or leaving a drawing. The
service (stream) description and origin/destination will be shown on top of the arrow
boxes entering or leaving the drawing. If the origin/destination is an equipment or
instrument item, show the equipment or instrument number and name. If the
origin/destination is a line, only the process/utility designation, unit designation and
numerical identification need be shown. Line numbering shall be as per ECS 1-1-2.

3.5.4 All utility lines entering or leaving the P&ID shall terminate at any convenient location on
the diagram with a utility service diamond. The utility code is to be indicated outside the
diamond and the connecting utility distribution diagram number is to be inside the
diamond.

Equipment

3.6.1 Equipment shall be drawn in good overall proportion even though they are not
drawn to a fixed scale. P&IDs shall have no more than three major pieces of equipment
per drawing sheet, unless approved by ESSO.

3.6.2 Rotating equipment item numbers and names appear below the equipment base line
with the item number duplicated on or near the equipment at its location on the diagram.
Indicate train designation within each unit (i.e. A, B, C).

3.6.3 Other equipment item numbers and names appear across the top of the diagram with
the item number duplicated on or near the equipment at its location on the diagram.
Indicate train designation with each unit (i.e. A, B, C).

Instrumentation

3.7.1 Instrument interconnection from sheet to sheet shall terminate at any convenient location
with the continuation description and drawing number indicated.

Mandatory Information Required on P&IDs

3.8.1 The P&IDs shall include the information per Table 3, as the minimum requirement.

Standard Legends for P&IDs

3.9.1 All Legends and Symbols are in accordance with the P&ID Standard Legend Drawings
shown below:

Drawing No. 7400-G000-50D2-0101 "Piping Symbols" (See Attachment 2)

Drawing No. 7400-G000-50D2-0103 "Equipment Symbols" (See Attachment 3)

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Rev. 4 May 2010

SPECIFICATION

Drawing No. 7400-G000-50D2-0102 "Instrument Symbols" (See Attachment 4)

Drawing No. 7400-G000-50D2-0100 "General Notes" (See Attachment 5)

Drawing No. 7400-G000-50D2-0104 "Piping Class Designation" (See Attachment 5)

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Rev. 4 May 2010

SPECIFICATION

TABLE 3

Information To Be Included On Piping And Instrumentation Diagram

EQUIPMENT PRIMARY IDENTIFICATION DETAILS
Vessels 1. Size (overall dimensions). 1. Elevation of bottom tangent line above grade.
2. Design temperature and pressure. 2. Vessel internals:
a) Number of trays in towers.
b) Packing of catalyst bed.
3. Show liquid levels if known.
Heat Exchangers 1. Surface area. 1. For condensers and reboilers, show elevation above grade.
and Air Coolers 2. Design temperature and pressure (both 2. Show true numbers of units and flow description.
sides)
3. Rated Duty
4. Number of fans with horsepower of drivers.
Furnaces and 1. Size. 1. Furnace outline and process flow including process instruments.
Process Heaters 2. Rated duty. 2. Utilities to be shown on separate flow sheet, including non-process
3. Coil design temperature and pressure. instruments.
4. Pass arrangement.
Boilers 1. Size. 1. Prepare a separate flow diagram for utility boilers.
2. Steam capacity.
3. Design pressure and temperature.
4. Super heater outlet temperature.
Cooling Towers 1. Waterside throughout. 1. Show number of cells when known.
2. Design inlet and outlet water temperature.
Tankage 1. Size (diameter x height) 1. Number, type and heat duty of heaters.
2. Net capacity. 2. Number and type of agitators or other mixing devices.
3. Type (floating roof, cone roof, etc.) 3. When a multiple number of tanks are involved, tank data should
preferably be shown in table form.
Pumps 1. Rated capacity and power. 1. Warm-up service (or cool down) piping.
2. Delta pressure. 2. Temporary strainers.
3. Type of driver.
4. Actual shutoff pressure.
Steam Turbines 1. Steam inlet and exhaust temperature and 1. Warm-up piping and equivalent special requirements.
pressure. 2. Strainers, traps, and drains.
2. Horsepower. 3. Lube and seal oil systems.
Compressors 1. m3 (ACFM) at inlet conditions. 1. Strainers.
2. Discharge pressure. 2. Warm-up piping and equivalent special requirements.
3. Type of driver. 3. Lube and seal oil systems.
4. Power rating.
Instrumentation 1. Type of instrument-flow, pressure, level, etc. 1. Symbols indicate whether instruments are local or transmitted; if
2. Measuring device-i.e. thermocouple or RTD transmission is pneumatic, analogue electric or digital electric; and
for temperature. general type of control system employed.
3. Local or transmitted readout. 2. Block valve and bypass piping.
4. Method of transmission.
5. Control System.
Control Valves 1. Valve body type-2 way or 3 way etc. 1. Position on failure of motive power.
2. Type of actuator-diaphragm, piston, 2. Position on failure of control signal.
solenoid, etc. 3. Actuator to be reverse or direct acting (if not piston operated).
3. Size (body x port). 4. Block and bypass valves.
4. Delta pressure. 5. Shutdown trip valves-usually solenoids.
Pressure Relief 1. Size and orifice size. 1. Inlet and discharge piping.
Valves 2. Set pressure . 2. Snuffing steam and discharge (if required).
3. Basis for sizing (fire, power failure, etc.) 3. Car sealed valves
Block Valves 1. Valve type. 1. Normally open or closed.
2. Valve code number. 2. Car sealed open or closed.
3. Type of internal coating or liner.
General 1. Line Identification. 1. Bleeds associated with valves or between double block valves.
2. Valve size of other than line size. 2. Chemical cleaning, flushing and sample connections (indicate
3. Line classification changes. type).
4. Tie-in identification, where applicable. 3. Process drain and vent system.
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SPECIFICATION

Information To Be Included On Piping And Instrumentation Diagram

EQUIPMENT PRIMARY IDENTIFICATION DETAILS
5. Each drawing shall include: 4. Temporary strainer.
a) Description of process or utility media 5. A separate geographical flow diagram will be required for utility
entering and leaving. stations, safety showers, etc.
6. Location of spectacle, hammer, or other permanent blinds.
b) Continuation reference to subsequent 7. Line slope.
drawings. 8. Car sealed valves.
9. Battery limit where applicable.
10. Specification breaks.
11. Fabricated package boundaries.

ELECTRICAL DRAWINGS

4.1 All Legends and Symbols are in accordance with the Electrical Standard Legend
Drawings shown below:

Drawing No. 7400-G000-90D0-0001 "Single Line and Control Schematic"

(See Attachment 6)

Drawing No. 7400-G000-90D0-0002 "Plot Plan and Layout Symbols" (See Attachment 7)

4.2 All abbreviations, symbols and device designations not covered by Standard Legend
Drawings shall be as per IEEE.

Drawing Numbers

4.3.1 Drawing numbering shall be as per par. 2.6.1 to 2.6.4. The serial number series shall be
as follows:

0000 - Serial for 66 kV SLDs

0100 - Serial for 11 kV SLDs
0200 - Serial for 6.6 kV SLDs
0300 - Serial for 3.3 kV SLDs
0400 - Serial for 0.4 kV SLDs
0500 - Serial for 110 V DC SLDs
1100 - Series for 35 kV and 66 kV SLD
1200 - Series for 6.6 kV SLD 60 Hz
1300 - Series for .48 kV SLD 60 Hz
1400 - Series for Misc. (UPS, etc.)
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SPECIFICATION

Single Line Diagrams

4.4.1 Single line diagrams shall include information as shown on Table 4 as a minimum
requirement.

TABLE 4
Information To Be Included On Single Line Diagrams
Equipment/Device Identification Information Details Example
Generators GE TAG Number. D500-GE-001
Rating (MVA). 15 MVA
Voltage (kV). 11 kV
Power factor (PF). 0.8 PF
Transformers TNS Tag Number. D500-TNS-001
ONAN/ONAF Rating (MVA). Primary/Secondary 15/20 MVA
Voltage (kV). Impedance (%). 66/11 kV
Z = 6%
Circuit Breakers BKR Tag Number. D500-BKR-001
(Power) Continuous Current Rating (A). 1600 A
Short Circuit Interrupting (kA). 40 kA
Circuit Breakers BKR Tag Number. D500-BKR-002
(Molded Case) Trip Setting Percentage of Continuous Current 250 AT
Rating (AT).
Frame Size (AF). 250 AF
Switchgears SGR Tag Number. D500-SGR-001
Continuous Current Rating (A). 1600 A
Voltage Rating (kV). 11 kV
Phases. Three phase
Frequency (Hz). 50 Hz
Short Circuit Interrupting Rating (kA). 25 kA
Motor Control MCC Tag Number. D500-MCC-001
Centers Continuous Current Rating (A). 2000 A
Voltage (V). 400 V
Phases. Three phase
Frequency. 50 Hz
Short Circuit Interrupting Rating (kA). 40 kA
Motors M Motor Size (kW) in Motor Symbol., 15 kW
Tag Number. D500-PM-001
Service Description. Crude Transfer Pump Motor
Potential PT Tag Number. D500-PT-001
Transformers Primary/Secondary Voltage (V). 11000-230 V
Quantity Required. (2)
Current CT Tag Numbers. D500-CT-001
Transformers Winding Ratio. Ratio 100:1
Quantity Required. (3)
Controllers Continuous Current Rating. 630 A
Medium voltage)
Motor Starters IEC/NEMA/EEMAC Size. Size 1
(Low voltage)
Grounding Resistors R Tag Number. D500-R-001
Continuous Current Rating (A). 100 A
Time Interval Rating. for 10 seconds
Grounding TNS Tag Number. D500-TNS-001
Transformers Primary/Secondary Voltage (V). 11000-230 V
(Distribution Type) Rating (kVA). 15 kVA
Lighting Panels LP Tag Number. D500-LP-001
Number Circuits. 24 CCT
Panel Description. Lighting Panel
Batteries BAT Tag Number. D500-BAT-001
Voltage Rating (V). 125 V
Ampere-hour Rating (AH) for 8 hours. 400 AH
Battery Chargers BC Tag Number. D500-BC-001
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SPECIFICATION

Information To Be Included On Single Line Diagrams

Equipment/Device Identification Information Details Example
Voltage Output Rating (V). 24 Volt
Current Output Ampere Rating (A). 5 Amp
Uninterruptable UPS Tag Number. D500-UPS-001
Power Supplies Power Output (VA/W). 650 VA/455 W
Output Voltage (V). 120 VAC
Space Heaters HTR Power Rating (W). 500 W
Voltage Rating (V). 230 V
Power Cables P Cable Type. P-K-001
Service (required for) Sequential Number. Power Cable for Compressor
Control Cables C Cable Type. C-PM-001
Service (required for) Sequential Number. Control Cable for Pump Motor
Composite Cables M Cable Type. M-PM-001
Service (required for) Sequential Number Composite cable for Pump Motor
Power & Control
Instrumentation I Cable Type. I-C-001
Cables Service (required for) Sequential Number Instrumentation Cable for CT Signal

Layout Drawings

4.5.1 Plot Plans shall be used as a base for all Electrical Layout Drawings and shall have
scales identified in par. 6.12.

4.5.2 The Electrical Layout Drawings shall include:

a. Electrical equipment number and associated process equipment number.

b. Contents identified within par. 6.1.3.

c. Drawings shall include North Arrow, elevations when required, dimensions when
required, key plan on a small scale with shading identifying area of the drawing.

4.5.3 Area Classification Drawings shall be drawn as overlays to the Equipment Location
Plans (see par. 6.2.1 and 6.2.2).

INSTRUMENTATION AND AUTOMATION DRAWINGS

Cause and Effect Drawings

5.1.1 Cause and Effect Drawings (Shutdown keys) shall follow the format indicated in
ECS 1-1-4.
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SPECIFICATION

Logic Drawings

5.2.1 Logic Drawings shall follow ISA S5.2.

Standards

5.3.1 Instrumentation/Automation Drawing Standards shall be supplied by ESSO.

FACILITY LAYOUT AND PIPING DRAWINGS

Plot Plans

6.1.1 Plot plans shall be drawn to scale as required to include an entire facility on one "E" size
or "D" size drawing.

6.1.2 Scales shall be:

a. 1:30
b. 1:50
c. 1:100
d. 1:200
e. 1:300
f. 1:500
g. 1:750
h. 1:1000

6.1.3 Plot Plan drawings shall show:

a. Each piece of equipment contained within the area with equipment identification
number. Packaged equipment will be identified by package number only.

b. Coordinates of match lines, fence lines, major equipment, etc., as required.

c. Areas reserved for future expansion.

d. Roads and fences.

e. Equipment list with equipment numbers and service.

Equipment Location Plans

6.2.1 Equipment Location Plans shall be drawn in 1:200, 1:100 or 1:50 scale. Scale bars shall
be included in all drawings drawn to scale.
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SPECIFICATION

6.2.2 Equipment Location Plans, in addition to points above, shall show:

a. All stairways, walkways and maintenance accessways (filter element removal,

heat exchanger tube pulling area, tower tray dropdown area, compressor
maintenance area, etc.).

b. Utility hose stations, emergency shower and eyewash facilities, fire hydrants and
monitors.

c. Coordinates of all equipment, piperack column row roads, buildings and

structures, etc.

d. Packaged equipment shall show and identify by equipment number each

individual piece of equipment within the package.

e. Elevations shall be given for high point of grade, top of piperack steel, top of
dikes, centerline of elevated equipment, etc.

North Arrow

6.3.1 Facility North Arrow will be drawn in upper left corner with reference to True North, and
the deviation between Facility North and True North shall be given. Prevailing wind
direction shall also be shown. In equipment location plans, only the Facility North Arrow
shall be drawn. The Facility North Arrow shall point up or to the left.

Coordinate System

6.4.1 A coordinate system for each facility shall be established. A point shall be designated
as N 0.000 and E 0.000. This point shall be 30 m south and 30 m west of the south-
western intersection of the north-south and east-west fence line of the facility. All
coordinates are referenced to facility north and east, and not to True north. Reference to
UTM coordinates shall be given.

Elevations

6.5.1 Facility elevation EL 100.000 shall be established as the Top of Benchmark at N 0.000
and E 0.000. Reference to mean sea level shall be stated.

Piping Plans

6.6.1 Piping plans shall be drawn in scale using CADD. Drawing size shall be "D" size
(preferred) or "E" size.
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SPECIFICATION

Piping Plans shall show as a minimum:

a. Plan, elevation and section details of all piping NPS 3/4 in. and larger sizes.
Piping NPS 3/4 in. to NPS 12 in. shall be drawn using single line method, piping
NPS 14 in. and larger shall be drawn double line.

b. Each item of connected equipment, including its item number.

c. Each item of flow-through type instrumentation, or instruments mounted to piping

or equipment with piping materials.

d. Line identification on each line. (Line number, flow arrow, insulation symbol and
thickness, tracing and slope).

e. Pipe supports, shoes, guides, etc. (shown by symbol and support standard
number if required).

f. Valve identification on each valve.

g. All specialty items, with tag numbers.

h. All specification breaks.

i. Bottom of Pipe (B.O.P.) or centerline of all aboveground pipe, and inverted

elevations of underground piping.

j. Dimensions of centerline of all pipe in relation to adjacent pipe, equipment and

structures. Fitting to fitting dimensions and standard valve dimensions are not to
be shown.

k. Top of support elevations, top of concrete, top of platforms, etc.

l. Drawing number of adjacent area plan views and other related views and typical
drawings.

m. Scale (1:30) and graphic scale.

n. Coordinate system reference for equipment, buildings, structures, etc.

o. Foundations appearing above grade curbs and structures.

p. Electrical trays and boxes.

q. Key plan in small scale, with area of drawing shaded.

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SPECIFICATION

Piping Isometrics

6.7.1 Piping isometrics shall be drawn when and where necessary to facilitate field or shop
fabrication. Isometric drawings are to be "B" size and include a bill of materials. A
project master material description and number code list may be used, so that an item
"202", for example, represents the same material on all isometric drawings. Isometric
drawings shall be single line. Gasket thicknesses shall be included in dimensions. Each
isometric drawing shall show north arrow, one elevation, and two coordinates. Insulation
shall be shown. Hydrostatic test vents and drains shall be indicated.

CIVIL/STRUCTURAL AND ARCHITECTURAL DRAWINGS

7.1 The drawings covered in this section include, but are not limited to, grading and surface
drainage drawings; underground piping, (water, sanitary sewer) layout drawings;
foundation location plans; foundation detail drawings; structural steel layout and detail
drawings; architectural drawings (floor plans, elevations, section and details) including
finish, door and window schedules; fence details drawings; roadway drawings (alignment
sheets, profiles and cross-sections), etc.

Grading Drawings

7.2.1 Grading drawings shall show the whole site on one sheet, if possible, and be consistent
with maintaining legibility. Where the site grading cannot be contained on one sheet, the
total grading plan shall be shown on multiple sheets referenced to each other by
appropriate match lines.

7.2.2 Grading drawings shall show:

a. Survey monument(s) and bench mark(s).

b. Desired elevations at any point of the site area.

c. Surface drains (ditches and swales) with their invert elevations and cross-
sections, if necessary.

d. Perimeter drains with invert elevations, slopes and type(s) of erosion protection, if any.

e. The general slope of any portion of the site.

f. Building outlines and outlines of other major structures, equipment and facilities,
with top of foundation concrete elevations.

g. Roads with center line elevations and direction of cross-slope, side outlets to
ditches, type(s) of pavement, and radii of pavement.

h. Paved areas, with area limits, elevations, slopes and type(s) of pavement.

i. Areas with impermeable, sealing layers (extent, thickness and other details).
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SPECIFICATION

j. Gravelled areas with area limits, elevations and type(s) of gravel.

k. Grassed areas with elevations and slopes.

l. Fence locations and type(s) of fencing, with vehicle and man gates.

Utilities Drawings

7.3.1 Underground utilities may be shown on separate utility drawings or may be incorporated
into the grading drawings if legibility permits or the extent of underground utilities is
minimal. Otherwise the following shall be as shown on separate underground utility
drawings:

a. Underground pipes for potable and utility water, with appropriate entry locations
into buildings and other tie-ins, with pipe diameter(s) and material description.

b. Sanitary sewer pipes, with manhole locations, invert elevations at inlets and
outlet of manholes, slope(s), diameter(s) and material description, as well as exit
locations from buildings, other tie-in points and entries into sewage treatment
facilities (mechanical/biological packages, septic tanks etc.).

c. Subsurface infiltration tile fields (leach fields) or other effluent disposal facilities,
with all necessary details.

d. Surface water drain pipes with catch basins, floor drains and manhole locations,
invert elevations at inlets and outlets of catch basins and manholes, slope(s),
diameter(s) and material description, as well as exit locations from buildings,
foundations and structures, other tie-in points and entries into oily water
separators.

e. Incoming and outgoing pipelines at the site.

Foundation Drawings

7.4.1 Foundation location plans and detail drawings shall show all foundations for buildings,
equipment and any structure. This includes, but is not limited to the following:

a. Piles with direction of batter, if any, and pile caps.

b. Ground floor slabs.
c. Spread footings.
d. Strip footings.
e. Grade beams.
f. Deadmen and associated earthwork.
g. Concrete embedded steel.
h. Tank foundation earth pads and concrete ring walls (if any).
i. Reinforcing bar details and schedules.
j. Anchor bolt details and schedules.
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SPECIFICATION

Structural Drawings

7.5.1 Layout and location plans and structural detail drawings shall show all steel and
reinforced concrete structures. Structural drawings shall cover the following:

a. Pipe racks and supports.

b. Bridges.
c. Platforms.
d. Ladders.
e. Stairs and stiles.
f. Walkways.
g. Building and packaged equipment skids.
h. Conduit and cable tray supports.
i. Building frames.
j. Roof trusses.
k. Cranes, monorails and hoists, as well as their supports.
l. Equipment supports such as vessel cradles (saddles) and skirts, and aerial
cooler legs.

Architectural Drawings

7.6.1 Architectural drawings shall show layouts (floor plans) and details of all permanent
buildings above their foundations. This includes all permanently installed equipment and
systems such as:

a. Cranes.
b. Monorails.
c. Elevators.
d. Plumbing and sanitation.
e. Heating (if any), ventilation and air conditioning (HVAC).
f. Floor hoists.
g. Drive-over service pits for vehicle maintenance.

7.6.2 The drawings shall also show schedules for:

a. External and internal finishes.

b. Windows.
c. Doors.

7.6.3 Architectural drawings shall be laid out so that floor plans are drawn in the bottom half of
the sheet and elevations in the top half. For example, by assuming the North arrow
points up, the South Elevation would be directly above the plan, the North Elevation
directly blow the plan, the East Elevation to the right and the West Elevation to the left of
the South Elevation. Sections may be shown in the remaining space on the drawings
sheet or on a second sheet.
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SPECIFICATION

PIPELINE DRAWINGS

Field Maps

8.1.1 Field Maps show detailed geographical information for a given field or fields. These
maps including locations of all producing wells, reservoir boundaries, facilities, roads,
rivers, towns and villages, and major pipelines. In addition, the maps contain information
regarding topography and terrain, as well as location coordinates (UTM or latitude-
longitude).

8.1.2 The Field Map shall be laid out using a scale large enough to allow clear interpretation of
details. As such, non-standard paper sizes may be utilized as necessary and as
approved by ESSO.

Hydraulic Diagrams

8.2.1 A hydraulic diagram consists of a schematic representation of a particular pipeline

network, and is used to display hydraulic data (pressures, temperatures, flow rates) at
various locations within the system for various design cases, as well as to show physical
data such as pipeline lengths and diameters.

8.2.2 Hydraulic diagrams shall be laid out using the "B" size format (8.5 x 11 in.). The area to
the right of the drawing shall be reserved for a legend and for notes. The remainder of
the page, aside from the title block, shall be reserved for the main portion of the drawing.

8.2.3 The major element of all hydraulic diagrams shall be a system schematic, which is a
sketch of the pipeline system, not necessarily to scale, but approximately spacially
correct. The system schematic may also display major landmarks, such as roads or
rivers, which are relevant to the design of the pipeline system. All wells, facilities and
landmarks shown in the system schematic shall be properly labelled, and all symbols
used shall be identified in the drawing legend. Symbols should be consistent with those
used in the overall field maps.

8.2.4 In addition, any information which is regarded by the originator as being essential for
proper interpretation of the diagrams shall be included as notes on the right hand side of
the drawing.

8.2.5 All hydraulic diagrams shall be categorized in one of two standard formats, as described
below:

a. Type 1 Hydraulic Diagrams shall be employed when the number of separate

design cases to be displayed for a given pipeline system does not exceed five.
In this case, in addition to the common elements described above, the diagram
shall display at minimum, the following information:
• Physical data, including lengths and nominal diameters of all pipelines
• Hydraulic data, including flow rates (m3/h) in all pipeline segments, as well
as pressures (kPa(a)) and temperatures (oC) at all pipeline segment start
and end points.
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A Type 1 Hydraulic Diagram shall be used to represent only a single set of

design conditions. For a given pipeline system, a separate diagram must be
prepared for each set of conditions for which hydraulic calculations are
performed.

b. Type 2 Hydraulic Diagrams are more basic than Type 1 diagrams and shall be
employed when the number of separate design cases for a given pipeline system
exceeds five. Essentially, a Type 2 diagram contains only the common elements
described in par. 8.2.3 and 8.2.4. It shall not contain any physical or hydraulic
data. Physical and hydraulic data shall instead be summarized in a table in a
separate document. The table must contain a clear reference to the
corresponding hydraulic diagram, and vice versa. In this way, a single diagram
may correspond to several different hydraulic design cases.

Route Maps

8.3.1 Route Maps shall be produced using both the "B" and "D" size formats. The route maps
shall be linked together by a Key Index map for easy reference. Each route map shall
indicate the following:

a. A profile map.
b. A plan section map to a scale of 1:10000.
c. Centerline Right-of-Way chainage.
d. A land use strip based on information gained from the most current survey data.
e. A construction details strip indicating the pipeline right-of-way configuration, all
roads and water crossings, extents of buoyancy control and casings, etc.
f. A pipe specification strip which specifies the relevant information for the pipelines
within the right-of way.
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SPECIFICATION

Alignment Sheets

8.4.1 Alignment sheets shall be produced on paper of size appropriate for the scale chosen
and approved by ESSO. The alignment sheets shall be indexed and referenced easily by an
overall key map for the gathering system.

8.4.2 Alignment sheets shall contain the following elements:

a. Elevation profile.
b. Pipeline route plan.
c. Pipeline schematic (no scale).
d. Erosion, buoyancy and drainage control measures.
e. Land use.
f. Soil and terrain information.
g. Environmental mitigative control.
h. Construction details.
i. Pipe properties.
j. Other information (location plan, legend, notes, reference drawings).

Crossing Drawings

8.5.1 Crossing drawings shall generally be produced in the "D" size format. The following
elements shall be included as a minimum:

a. Profile indicated depths of cover for the entire crossing.

b. Separation between roads, power lines, utilities, etc.
c. Spacing between crossing lines.
d. Pipe protection (i.e. whether casings or concrete pads, etc.).
e. Reference to main drawings and survey pins.
f. General construction details.
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SPECIFICATION

NUMBERING ATTACHMENT 1

SYSTEM FOR DRAWINGS AND RELATED DOCUMENTS

Drawing 00 10 20 30 40 50 60 70 80 85 86 90
Group General Facility Civil/ Architectur Pipeline Process Piping Mechanical Instr. & Communicatio Safety Electrical
Drawing Layouts Structural al Automation ns Engineering
51
Code Dn
Materials
Selection

D0 Standard Plot/Site Site Prep. & Floor Plan Process Flow Process General Pressure Loop Standard Area Class Standard
Drawing Plans Grading Roof Plan Diagrams Flow Arrangement Vessels Diagrams drawing legends Drawings Drawing
Legends Elev. & Diagrams Drawings & indexes Legends &
Details Material Index
Select Diagr

D1 Drawing Equip. Beams & Door & Material 51 Piperack Storage Tanks Control Block Diagrams Fire Hazardous Single Line
Index Sheets Location Ditches Window Balance Material Arrangement Wiring Area Drawings Diagrams
Schedule Sheets Balance Drawings Schematics
Sheets

D2 Block Equipment Piling Lighting Plan Piping & 50 Isometric Heat Control Fire Protection
Diagrams Layout & Instr. Piping & Drawings Exchangers Wiring Equipment
Diagrams Instr. Termination Location Plans
Foundation Drawings
Locations Diagrams

D3 Drawing Key Building Foundation Air Cond. Hydraulic Spool Sheets Heaters & Equipment Fire & Gas Equipment
Plans Layout Plans & Ventilating & Diagrams Fired Cable Detection Layout &
Details Heating Equipment Schedules Layout & Details Location Plans Detail

D4 Topographic Roadways Structural Furnishings Route Maps Pipe Shoes & Pumps Logic & Block Grounding Overall Grounding
Surveys Plans, Elev. Layout & Restraints Diagrams Layouts & Fire Water Layout &
& Details Construct. Details Network Details
Drawings

D5 Sketches Sewage & Pipe Racks Finishing Alignment Stress Compressors Panels Cabling Logic & Block Lighting
Drainage & Misc. Schedule Sheets Sketches Drawings Diagrams Diagrams Layout &
Systems Supports Spring Detail Details

D6 Misc. U'ground Platforms, Color Crossing Tie-In Details Processing ESD & Power Layout & Power
Services Walkways & Schedule Drawings Equip. Shutdown Details Layout &
Ladders (River, Road (General) Keys Details
etc.)
D7 Fire Wellhead Material Vendor Instr. Schematic
Proofing Details Take-offs Drawings Installation Schematic & &
(Details) (Packaged Detail Interconnect Interconnect
Facilities) Drawings Drawings
D8 Misc. Demolition DCS Cable Cable,
Field Block Drawings System Cable conduit & Schedules Conduit &
Diagram Schematic Raceway Raceway
Schedules Schedules
D9 Maps Junction Box
(General) General Control Room Junction Box & & Connection
& Pipeline Arrangment Layout Connection Drawings
Roads U/G Piping Drawings

DA Heat
Typical Location Misc. Drawings Tracing &
Drawings Drawings Misc.
Drawings
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SPECIFICATION

ATTACHMENT 2
PIPING AND INSTRUMENTATION DIAGRAM STANDARD LEGEND
PIPING COMPONENT AND INSTRUMENT LINE SYMBOLOGY
DRAWING NO. 7400-G000-50D2-0101
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SPECIFICATION

ATTACHMENT 3
PIPING AND INSTRUMENTATION DIAGRAM STANDARD LEGEND
EQUIPMENT SYMBOLOGY
DRAWING NO. 7400-G000-50D2-0103
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SPECIFICATION

ATTACHMENT 4
PIPING AND INSTRUMENTATION DIAGRAM STANDARD LEGEND
INSTRUMENT DESIGNATIONS AND SYMBOLS FOR P&IDs
DRAWING NO. 7400-G000-50D2-0102
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SPECIFICATION

ATTACHMENT 5
PIPING AND INSTRUMENTATION DIAGRAM STANDARD LEGEND
EQUIPMENT ID LETTERS & LINE SERVICE DESIGNATIONS
DRAWING NO. 7400-G000-50D2-0100 & 0104
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SPECIFICATION

ATTACHMENT 6
ELECTRICAL STANDARD LEGEND
SINGLE LINE AND CONTROL SCHEMATIC SYMBOLS
DRAWING NO. 7400-G000-90D0-0001
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SPECIFICATION

ATTACHMENT 7
ELECTRICAL STANDARD LEGEND
PLOT PLAN AND LAYOUT SYMBOLS
DRAWING NO. 7400-G000-90D0-0002
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SPECIFICATION

CHAD DOBA DEVELOPMENT

PROJECT ADDENDUM

5.3.1 Instrumentation Standard Drawings are provided in the Automation System addendum
provided in the Job Specification.

8.3.1 d. Land use strips shall be based on information gained from the in-country
survey carried out in May 1995 and 1:26000 aerial photographs.