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End Client
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Pipeline Inspection Report
ROV Pipeline Inspection Survey Field Name Field
Offshore United Arab Emirates
For
END CLIENT
PIPE NAME
Inspection Date: Month YYYY
Document No.: XXX-RP-OP-XXX
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Contractor
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PROJECT LOCATION FIELD LAYOUT
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Figure 1: Pipeline Name Pipeline As-Found – Plan View
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Document Prepared by MCS Free Zone (MCS)
Prepared by XXXXXX
Company MCS Free Zone
Address 5 Atef Khattab St.,
Laselky Division,
Maadi, Cairo
11435, Egypt
Tel +20225171790 / +20225171791
Fax +20225171794
Web Address www.mcsoil.com
Document Issued by Contractor Company Name
Issued by XXXXXXX
Company
Address
Tel
Fax
Web Address
Document Issued to End Client Name
Issued to XXXXXXXXX
Company
Address End Client Address
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Contractor
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Quality Control
MCS Report No.
XXXX-XXXX-RP-XX-XX-XXX
Revision No. Description Issue Date
Prepared By
Reviewed By
Approved By
R0 Draft – Issued to client for approval
dd/mm/yy XXXXXX XXXXXX XXXXXX
Service Warranty
The data presented within the report and associated charts/drawings have been acquired and processed to meet the requirements of the contract as agreed by End Client and Contractor. Any unauthorized use of the information presented within this report and charts/drawings is prohibited. Contractor will not accept any liability if the data is used for purposes other than those agreed in the contract.
Subsea cables and thin pipelines can be very difficult to detect due to their small diameter. Unless their existence and approximate location is made known prior to the commencement of the survey work, there is a possibility that they may not be represented in these documents and the user should take the necessary precautions.
The information presented in this report and associated charts/drawings are based on the interpretation of the external visual inspection and will not provide accurate details of any features which are not entirely and/or clearly visible.
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Table of Contents
Page
1. INTRODUCTION ............................................................................................................................................................... 6
1.1. Definition ............................................................................................................................................................................. 6
1.2. Project Scope of Work ........................................................................................................................................................ 6
1.2.1. Pipeline Survey .............................................................................................................................................................. 6
1.2.2. Platform Inspection......................................................................................................................................................... 6
1.2.3. Optional Work................................................................................................................................................................. 7
1.3. Client Provided Information ................................................................................................................................................ 8
2. INSPECTION SUMMARY ................................................................................................................................................ 9
2.1. ROV Inspection Notes ...................................................................................................................................................... 10
3. INSPECTION RESULTS ................................................................................................................................................ 11
3.1. Anomaly Summary ........................................................................................................................................................... 11
3.2. Anodes .............................................................................................................................................................................. 12
3.3. Pipe Exposures ................................................................................................................................................................ 12
3.4. Pipe Damages .................................................................................................................................................................. 13
3.5. Debris ................................................................................................................................................................................ 13
3.6. Engineering Features ....................................................................................................................................................... 14
3.7. Seabed Features .............................................................................................................................................................. 14
3.8. Field Joints ........................................................................................................................................................................ 15
3.9. Free spans ........................................................................................................................................................................ 15
3.10. Supports ............................................................................................................................................................................ 16
3.11. Stabilizations ..................................................................................................................................................................... 16
3.12. Crossings .......................................................................................................................................................................... 17
3.13. Video Images .................................................................................................................................................................... 18
APPENDICES
APPENDIX A – SURVEY PARAMETERS I
APPENDIX B – EVENT CODE DEFINITIONS IV
APPENDIX D – COMPLETE EVENT LISTING VII
APPENDIX E – PIPELINE COORDINATE LISTING IX
APPENDIX G – INSPECTION ALIGNMENT CHARTS XI
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List of Tables
Table 1: Pipeline Name Pipeline – Pipeline Characteristics 8
Table 2: Pipeline Name Pipeline – Inspection Summary 9
Table 3: Pipeline Name Pipeline – Anomalies Listing 11
Table 4: Pipeline Name Pipeline – Anodes Listing 12
Table 5: Pipeline Name Pipeline – Exposures Listing 12
Table 6: Pipeline Name Pipeline – Damages Listing 13
Table 7: Pipeline Name Pipeline – Debris Listing 13
Table 8: Pipeline Name Pipeline – Engineering Features Listing 14
Table 9: Pipeline Name Pipeline – Seabed Features Listing 14
Table 10: Pipeline Name Pipeline – Field Joints Listing 15
Table 11: Pipeline Name Pipeline – Free spans Listing 15
Table 12: Pipeline Name Pipeline – Supports Listing 16
Table 13: Pipeline Name Pipeline – Stabilizations Listing 16
Table 14: Pipeline Name Pipeline – Crossings Listing 17
Table 15: GPS Satellite System Geodetic Parameters II
Table 16: Project Geodetic Parameters II
Table 17: Survey Units III
Table 18: Event Dimension Definitions III
Table 19: Anode Depletion Grades III
Table 20: Event Code Definitions VI
Table 21: Pipeline Name Pipeline – Complete Event Listing VIII
Table 22: Pipeline Name Pipeline – Pipeline Coordinate Listing X
Table 23: Pipeline Name Pipeline – Associated Charts XII
List of Figures
Figure 1: Pipeline Name Pipeline As-Found – Plan View ii
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GLOSSARY OF ABBREVIATIONS
BOSIET Basic Offshore Safety Induction and Emergency Training
DPR Daily Project Report
CD Chart Datum
CM Central Meridian
CP Cathodic Protection
CRP Common Reference Point
CTDS Conductivity, Temperature, Depth and Salinity (to compute VOS)
DGPS Differential Global Positioning System
DP Dynamic Positioning
GMT Greenwich Mean Time
GPS Global Positioning System
GVI General Visual Inspection
HSE Health, Safety & Environment
INS Inertial Navigation System
KP Kilometer Post
LAT Lowest Astronomical Tide
LIM Line Insulation Monitor
MCS MCS Free Zone
MPI Magnetic Particle Inspection
M/s Meter per Second
MV Marine Vessel
mV Millivolts
NDT Non-Destructive Testing
QC Quality Control
ROV Remotely Operated Vehicle
SOW Scope of Work
TBA To Be Announced
TBC To Be Confirmed
UAE United Arab Emirates
USBL Ultra Short Base-Line (Underwater Acoustic Positioning System)
UTC Coordinated Universal Time
UTM Universal Transverse Mercator
VOS Velocity of Sound in Seawater
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1. INTRODUCTION
Contractor Company Name was contracted by End Client to provide ROV survey services for the
inspection of existing subsea pipelines in the Field Name field, offshore United Arab Emirates.
This document provides the detailed results of the ROV survey undertaken along the pipelines.
Inspection operations were undertaken from the Vessel Name.
All survey related works were carried out in accordance with End Client Name’s requirements/
Contractor’s and standing work practices.
1.1. Definition
PROJECT ROV Inspection of Subsea Pipelines/Cable/Structure
COMPANY End Client
CONTRACTOR Contractor Company Name
SURVEY SUB-CONTRACTOR Contractor Company Name
ROV SUB-CONTRACTOR Contractor Company Name
LOGGING, PROCESSING, AND MCS Free Zone
REPORTING SUB-CONTRACTOR
CP SUB-CONTRACTOR XXXXX
1.2. Project Scope of Work
The scope of work to be carried out by contractor under this contract was to undertake ROV pipeline
inspection offshore the United Arab Emirates. The scope of required services can be summarized as
follows:
1.2.1. Pipeline Survey
The scope of work to be carried out by contractor under this section of the contract was to conduct
inspection surveys of existing pipeline infrastructure in the Field Name field, offshore United Arab
Emirates. The scope of required services can be summarized as follows
ROV inspection survey of No of surveyed pipes subsea pipelines (approximately Total Length
of pipes/cables Km).
The purpose of the pipeline survey was the visual assessment of the basic properties (presence /
absence, overall integrity, obvious damage, surface condition, etc.) of the pipeline and associated
attachments.
1.2.2. Platform Inspection
The scope of work to be carried out by contractor under this section of the contract is to conduct
external inspection surveys of designated platforms in Field Name, as part of the End Client Name
routine platform inspection project.
The scope of required services can be summarized as follows:
General Visual Inspection (GVI):
Cathodic Protection and Anode Survey:
Riser Survey:
Riser Clamp Survey:
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1.2.3. Optional Work
The client had informed contractor that upon completion of the pipeline survey/platform inspection
addition survey operations may be required to be undertaken by the ROV, these being:
Seabed survey.
Spud can survey.
The client confirmed all optional work prior to the completion of pipeline survey/platform inspection
operations
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1.3. Client Provided Information
The below table presents characteristics of the pipeline were provided by the client.
Pipeline Name Pipeline – Pipeline Characteristics
Date Laid YYYY
Outside Steel Pipe
Diameter (mm) X.XX
Wall Thickness
(mm) XX.X
Material XXXXXX
First Layer: Anti-
Corrosion Coating
(mm)
XXXXXX
Concrete Coating
Thickness (mm) XX.X
Table 1: Pipeline Name Pipeline – Pipeline Characteristics
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2. INSPECTION SUMMARY
Pipeline Name Pipeline – Inspection Summary
Criteria Description
Pipeline Pipeline Name
Field Field Name Field
Inspection Date dd/mm/yyyy
Pipeline Start Location Start Location “E,N”
Pipeline End Location End Location “E,N”
Pipeline Start KP xx.xxx
Pipeline End KP xx.xxx
Water Depth xx.xxx m
General Condition The pipeline in serviceable condition with no areas of pipe damage
and no areas of weight coat loss.
Anomalies
XXX Anomalies were found during the survey, consisting of:
XX Anodes
XX Free spans
…. Etc.
Anodes XX Anodes were observed during survey.
None OR XX found to be anomalous.
Exposures XX Exposures were observed during survey.
None OR XX found to be anomalous.
Damages XX Damages were observed during survey.
None OR XX found to be anomalous.
Debris XX Debris was observed during survey.
None OR XX found to be anomalous.
Engineering Features XX Engineering features were observed during survey.
None OR XX found to be anomalous.
Seabed Features XX Seabed features were observed during survey.
None OR XX found to be anomalous.
Field Joints XX Field joints were observed during survey.
None OR XX found to be anomalous.
Free spans XX Free spans were observed during survey.
None OR XX found to be anomalous.
Supports XX Supports were observed during survey.
None OR XX found to be anomalous.
Stabilizations XX Stabilizations were observed during survey.
None OR XX found to be anomalous.
Crossings XX Crossings were observed during survey.
None OR XX found to be anomalous.
Table 2: Pipeline Name Pipeline – Inspection Summary
Note:
This report is to be read in-conjunction with the supplied MCS digital viewer, which presents the
complete video along with processed sensor and event information recorded at the time of the survey.
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2.1. ROV Inspection Notes
All times stated within the report are GMT + 4Hrs. (UAE Local time).
Video data was recorded at the time of the survey. KP values displayed on the video overlays are
raw and were derived by using the client supplied databases. KP values stated in the report
document are generated from the processed track of the ROV thus; a variation may occur between
the raw KP values displayed on the video overlays and the KP values stated within this report
document.
Events visually observed both during the initial survey and post review are presented within this
report document. Events that were obscured from view of the cameras (i.e. an event covered with
sufficient marine growth to hide its appearance) were not recorded and are not presented within
this report document.
No “Fitness for Purpose” comments or conclusions are present within this report document.
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3. INSPECTION RESULTS
3.1. Anomaly Summary
Pipeline Name Pipeline – Anomalies Listing
Event
ID Date/Time
Event
Code KP
Easting
(m)
Northing
(m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 3: Pipeline Name Pipeline – Anomalies Listing
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3.2. Anodes
XX (Number in letters) anodes were observed during the survey, XX (Number in letters) were considered anomalous. The most negative value recorded was
-XXXXmV at KPX.XXX and the least negative value recorded was -XXXXmV at KPX.XXX. The potentials indicate that the pipeline is being effectively
protected throughout its entire length by its cathodic protection system. Details of the anodes are presented below:
Pipeline Name Pipeline – Anodes Listing
Event
ID Date/Time
Event
Code KP
Easting
(m)
Northing
(m)
Top of Pipe
Depth (m)
CP Reading
(-mV)
Depletion
Grades Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 4: Pipeline Name Pipeline – Anodes Listing
3.3. Pipe Exposures
XX (Number in letters) areas of burial were observed during the survey, XX (Number in letters) were considered anomalous. Details of the burials are
presented below:
Pipeline Name Pipeline – Pipe Exposure Listing
Event
ID Date/Time Event Code KP Easting (m) Northing (m) Length (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 5: Pipeline Name Pipeline – Exposures Listing
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3.4. Pipe Damages
XX (Number in letters) areas of damage observed during the survey, which considered anomalous. Details of the items of damages are presented below:
Pipeline Name Pipeline – Damages Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 6: Pipeline Name Pipeline – Damages Listing
3.5. Debris
XX (Number in letters) debris observed during survey, XX (Number in letters) were considered anomalous. Details of the items of debris are presented
below:
Pipeline Name Pipeline – Debris Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 7: Pipeline Name Pipeline – Debris Listing
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3.6. Engineering Features
XX (Number in letters) engineering features observed during the survey, XX (Number in letters) were considered anomalous. Details of the features are
presented below:
Pipeline Name Pipeline – Engineering Feature Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 8: Pipeline Name Pipeline – Engineering Features Listing
3.7. Seabed Features
XX (Number in letters) seabed features observed during the survey, XX (Number in letters) were considered anomalous. Details of the features are
presented below:
Pipeline Name Pipeline – Engineering Feature Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 9: Pipeline Name Pipeline – Seabed Features Listing
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3.8. Field Joints
XX (Number in letters) field joints observed during the survey, XX (Number in letters) were considered anomalous. Details of the field joints are presented
below:
Pipeline Name Pipeline – Field Joints Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 10: Pipeline Name Pipeline – Field Joints Listing
3.9. Free spans
XX (Number in letters) areas of free span observed during the survey, XX (Number in letters) were considered anomalous; the allowable free span length
(X.XX m).The longest free span was X.XX m long at KPX.XXX. Details of the areas of free span are presented below:
Pipeline Name Pipeline – Free spans Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Length
(m)
Height
(m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 11: Pipeline Name Pipeline – Free spans Listing
Notes:
1) Number of free spans is considered with respect to free span start. 2) Touchdowns are considered when calculating free span lengths.
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3.10. Supports
XX (Number in letters) supports observed during the survey, XX (Number in letters) were considered anomalous. Details of the supports are presented
below:
Pipeline Name Pipeline – Supports Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 12: Pipeline Name Pipeline – Supports Listing
3.11. Stabilizations
XX (Number in letters) supports observed during the survey, XX (Number in letters) were considered anomalous. Details of the supports are presented
below:
Pipeline Name Pipeline – Stabilizations Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 13: Pipeline Name Pipeline – Stabilizations Listing
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3.12. Crossings
XX (Number in letters) crossings observed during the survey, XX (Number in letters) were considered anomalous. Details of the crossings are presented below:
Pipeline Name Pipeline – Crossings Listing
Event
ID Date/Time
Event
Code KP Easting (m) Northing (m)
Top of Pipe
Depth (m)
Seabed
Depth (m) Description
Spheroid: Clarke 1880, Datum: Nahrwan 1967, UTM Zone: 39N, CM: 51°E
Table 14: Pipeline Name Pipeline – Crossings Listing
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3.13. Video Images
Anomaly description Anomaly description
ID: KP: Code: ID: KP: Code:
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Appendix A – Survey Parameters
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GPS Satellite System Geodetic Parameters
The geodetic parameters for the WGS84 Spheroid and Datum are as follows:
GPS Satellite System Geodetic Parameters
Parameter Value
Spheroid XXXXX
Semi-Major Axis (a) XXXXX
Semi-Minor Axis (b) XXXXX
First Eccentricity Squared (e2) XXXXX
Inverse Flattening (1/f) XXXXX
Datum XXXXX
Source: XXXXX
Table 15: GPS Satellite System Geodetic Parameters
Project Geodetic Parameters
The following Spheroid, Projection and Transformation Parameters were utilized throughout the duration of the
survey and within this document.
Project Geodetic Parameters
Parameter Value
Spheroid XXXXX
Semi-Major Axis (a) XXXXX
Semi-Minor Axis (b) XXXXX
First Eccentricity Squared (e2) XXXXX
Inverse Flattening (1/f) XXXXX
Datum XXXXX
Projection XXXXX
Central Meridian (CM) XXXXX
Latitude of Origin XXXXX
False Easting XXXXX
False Northing XXXXX
Scale Factor on CM XXXXX
Transformation Parameters (ITRF 2000 – epoch 1997.0 to Nahrwan 1967)
Translation XXXXX XXXXX XXXXX
Rotation XXXXX XXXXX XXXXX
Scale Factor XXXXX XXXXX
Rotation Convention: Coordinate Frame Rotation (Right Handed Convention)
Source: XXXXX
Table 16: Project Geodetic Parameters
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Survey Units
The following survey units were used throughout the project and within this document.
Survey Units
Type Unit
Time XXXXX
Linear units XXXXX
Velocity XXXXX
Angular units XXXXX
Table 17: Survey Units
Event Information
All events are described and dimensioned. All dimensions are in terms of the following:
Event Dimension Definitions
Type of Dimension Example
XXXXX XXXXX
XXXXX XXXXX
XXXXX XXXXX
XXXXX XXXXX
Table 18: Event Dimension Definitions
Anode Depletion Grades
Depletion Grades Depletion Percentage
XXXXX XXXXX
XXXXX XXXXX
XXXXX XXXXX
XXXXX XXXXX
Table 19: Anode Depletion Grades
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Appendix B – Event Code Definitions
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Event Code Definitions
Event Code Description Event Code Description
AN-AB Anode Bracelet EF-FCL Clamp
AN-AD Anode Damaged EF-FG Generic
AN-AF Anode Retrofit EF-FL Flange
AN-AR Anode Remote EF-FO Other Features
AN-SA Anode Sled EF-GN Goose Neck
BU-BE Burial End EF-PB Pipe Bend
BU-BIE Intermittent Burial End EF-PF Protection Frame
BU-BIS Intermittent Burial Start EF-PL PLEM
BU-BS Burial Start EF-RE Riser Elbow
C-CC Comment EF-TI Tie-In
DA-CMC Cracking EF-VL Valve
DA-DBE Bitumen Exposed Coating EF-WCC Weight Coat Change
DA-DCC Concrete Cracked Coating FJ-FD Field Joint Damaged
DA-DCR Concrete Removed Coating FJ-OK Field Joint
DA-DCR Concrete Removed Coating FS-SC Scour
DA-DME Bare Metal Exposed FS-SE Free span End
DA-DRE Concrete Removal End Coating FS-SIE Intermittent End Free span
DA-DRS Concrete Removal Start Coating FS-SIS Intermittent Start free span
DA-LK Pipeline Leak FS-SS Free Span Start
DA-PD Pipeline Damaged FS-TD Touchdown
DA-PK Pipeline Kink SF-MG Marine Growth
DA-PM Pipeline Movement SF-MGE Marine Growth End
DB-AC Anchor SF-MGS Marine Growth Start
DB-DAD Area Of Debris SF-OC Outcrop
DB-DC Chain SF-OSF Other Seabed Features
DB-DW Wire / Cable SF-RO Rock
DB-DFN Fishing Net SF-ROE Rocky Outcrop End
DB-DFT Fish Trap Basket / Fishing SF-ROS Rocky Outcrop Start
DB-DM Metallic S-CS Cylindrical support
DB-DN Non Metallic S-GB Grout Bag support
DB-DOH Other Hard Debris S-GH Gravel Heap
DB-DOS Other Soft Debris S-MS Mechanical support
DB-DSC Scaffold S-MT Mattress
DB-DSR Soft Rope S-MTE Mattress End
DB-DT Tire S-MTS Mattress Start
DB-PC Pipe Cut S-SB Sand Bag
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Event Code Definitions
Event Code Description Event Code Description
S-SL Sleeper U-E End of Survey
ST-BA Buckle Arrested U-S Start of Survey
ST-GB Grout bags VI-VNE No Visibility End
ST-IL Link Lock Mattress VI-VNS No Visibility Start
ST-IM Mattress VI-VPE Poor Visibility End
ST-MA Mechanical Anchor VI-VPS Poor Visibility Start
ST-ME Mattress End X-XCO Crossing Cable Over
ST-MS Mattress Start X-XCU Crossing Cable Under
ST-RDE Rock Dump End X-XPO Crossing Pipe Over
ST-RDS Rock Dump Start X-XPU Crossing Pipe Under
ST-SB Sand Bag
ST-SB Saddle Block
Table 20: Event Code Definitions
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Appendix D – Complete Event Listing
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Table 21: Pipeline Name Pipeline – Complete Event Listing
Pipeline Name Pipeline- Complete Event Listing
Event ID Event Code KP Easting (m) Northing (m) TOP Depth (m) Seabed Depth (m) Description
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Appendix E – Pipeline Coordinate Listing
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Table 22: Pipeline Name Pipeline – Pipeline Coordinate Listing
Pipeline Name Pipeline - Pipeline Coordinate Listing
KP Easting (m) Northing (m) TOP Depth (m)
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Appendix G – Inspection Alignment Charts
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The table below presents the charts which are associated with this report
Pipeline Name Pipeline - Associated Charts
Drawing Number Rev No. Description Scale
Table 23: Pipeline Name Pipeline – Associated Charts