Teledyne HydroPACT 350 User manual

User Manual
HydroPACT 350
Subsea Cable Tracking System
500272 - HydroPACT 350 110V a.c. 3000m
500277 - HydroPACT 350 230V a.c. 3000m
500320 - HydroPACT 350 110V a.c. 6000m
500321 - HydroPACT 350 230V a.c. 6000m
© 2019 Teledyne Ltd.
The information in this manual is subject to change without notice and does not represent a
commitment on the part of Teledyne Ltd. All drawings, technical content and the intellectual
property associated with this manual is property of Teledyne Ltd.No content should be copied or
distributed in any way without the express permission of the company.
Document Part Number: 402197
Issue: 7.1
Date: January 2019
Teledyne Marine
International Avenue, ABZ Business Park,
Dyce, Aberdeen AB21 0BH UK
Tel: [phone]
Email: [email protected]

DPN 402197 Issue 7.1 © Teledyne Limited i
Contents
Contents ............................................................................................................................................ i
List of Figures................................................................................................................................. vi
List of tables ................................................................................................................................. viii
Revision History ............................................................................................................................. ix
Glossary ........................................................................................................................................... x
1 Introduction ............................................................................................................................... 1-1
1.1 Conventions used ............................................................................................................... 1-1
1.2 System Description ............................................................................................................. 1-1
1.3 Principle of Operation ......................................................................................................... 1-3
1.4 Warranty ............................................................................................................................. 1-3
1.5 Product Support ................................................................................................................. 1-4
2 Installation ................................................................................................................................. 2-1
2.1 Unpacking and Inspection ..................................................................................................2-1
2.1.1 Scope of Supply .........................................................................................................2-1
2.2 Physical Installation ............................................................................................................ 2-2
2.2.1 SEP ............................................................................................................................ 2-2
2.2.2 Coil Array .................................................................................................................... 2-3
2.2.2.1 Assembling the coil array .................................................................................... 2-4
2.2.2.2 Mounting the coil array ........................................................................................ 2-6
2.2.3 Altimeter Installation ................................................................................................. 2-10
2.2.4 Installation Checklist ................................................................................................. 2-11
2.3 Electrical Installation ......................................................................................................... 2-11
2.3.1 Ground Connections ................................................................................................ 2-13
2.3.2 Care of Subsea Connectors ..................................................................................... 2-13
2.3.3 Subsea Electronics Pod ........................................................................................... 2-14
2.3.3.1 Power requirement............................................................................................ 2-14
2.3.3.2 Alternative Communication Methods................................................................. 2-15
2.3.3.3 Changing communication settings in the SEP .................................................. 2-17
2.3.4 Sensing Coils ...........................................................................................................2-20
2.3.5 Subsea Altimeter ...................................................................................................... 2-21
2.3.5.1 Direct connection to the SEP ............................................................................ 2-21
2.3.5.2 Connection to the topside computer ................................................................. 2-21
3 Operating software ................................................................................................................... 3-1
3.1 Initialisation ......................................................................................................................... 3-1
3.2 Initial Configuration ............................................................................................................. 3-1
3.2.1 SEP type .................................................................................................................... 3-2
3.2.2 Communication ports ................................................................................................. 3-2

ii © Teledyne Limited DPN 402197 Issue 7.1
3.2.3 System Parameters .................................................................................................... 3-4
3.2.3.1 Tone frequency ................................................................................................... 3-4
3.2.3.2 Tone frequency reminder interval........................................................................ 3-5
3.2.3.3 Threshold ............................................................................................................ 3-5
3.2.3.4 Coil separation .................................................................................................... 3-6
3.2.3.5 Coil calibration constants .................................................................................... 3-6
3.2.4 Print Configuration ...................................................................................................... 3-6
3.3 Operating DeepView .......................................................................................................... 3-7
3.3.1 Menu commands ........................................................................................................ 3-8
3.3.2 View Menu ................................................................................................................ 3-11
3.3.2.1 Run Window...................................................................................................... 3-11
3.3.2.2 Forward Search Window................................................................................... 3-14
3.3.2.3 Scope and Spectrum Analyser Window ............................................................ 3-15
3.3.2.4 System Errors Window...................................................................................... 3-17
3.3.2.5 Terminal Window............................................................................................... 3-18
3.3.2.6 Video Overlay Enable ....................................................................................... 3-19
3.3.3 Configuration Menu .................................................................................................. 3-19
3.3.3.1 System parameters ........................................................................................... 3-19
3.3.3.2 Altimeter ............................................................................................................ 3-19
3.3.3.3 External data logging ........................................................................................ 3-22
3.3.3.4 Load factory defaults......................................................................................... 3-22
3.3.3.5 Video overlay setup........................................................................................... 3-23
3.3.4 Toolbars ................................................................................................................... 3-24
3.3.5 Function Keys ...........................................................................................................3-26
3.4 Replaying a Log File ......................................................................................................... 3-27
3.5 Quality Control .................................................................................................................. 3-27
3.6 Reinstall DeepView Procedure ......................................................................................... 3-28
4 Operating Procedure ................................................................................................................ 4-1
4.1 Pre-Survey Preparation ...................................................................................................... 4-1
4.1.1 Training ...................................................................................................................... 4-1
4.1.2 Tone Frequency ......................................................................................................... 4-1
4.1.3 Survey Requirements ................................................................................................. 4-2
4.1.4 Installation Requirements ........................................................................................... 4-2
4.2 Pre-dive Checks ................................................................................................................. 4-2
4.3 During the survey ............................................................................................................... 4-3
4.3.1 Data Logging .............................................................................................................. 4-4
4.3.2 Replay Logged Data ................................................................................................... 4-4
4.4 After the Dive ...................................................................................................................... 4-5
4.5 Data Formats ...................................................................................................................... 4-6
4.5.1 External Logging Format ............................................................................................ 4-6
4.5.1.1 Co-ordinates and Signals Format........................................................................ 4-6

DPN 402197 Issue 7.1 © Teledyne Limited iii
4.5.1.2 Forward Search mode......................................................................................... 4-8
4.5.2 Internal Logging Format ............................................................................................. 4-9
4.6 Altimeter Data Format ...................................................................................................... 4-12
4.6.1 Benthos PSA 916 ..................................................................................................... 4-12
4.6.2 Datasonics PSA 900 and PSA 9000 ........................................................................ 4-13
4.6.3 Ulvertech Bathymetric System ................................................................................. 4-13
4.6.4 Simrad UK90 ............................................................................................................ 4-14
4.6.5 OSEL Bathymetric System ....................................................................................... 4-14
4.6.6 Tritech SeaKing Bathy 704 ....................................................................................... 4-15
5 Operational Considerations .................................................................................................... 5-1
5.1 Operating Performance ...................................................................................................... 5-1
5.2 Sources of Error ................................................................................................................. 5-1
5.2.1 ROV Handling ............................................................................................................5-1
5.2.1.1 ROV position over the target ............................................................................... 5-2
5.2.1.2 The effects of roll, pitch and skew....................................................................... 5-3
5.2.1.3 Slope ................................................................................................................... 5-4
5.2.2 Electrical Interference .................................................................................................5-5
5.2.2.1 The ROV ............................................................................................................. 5-5
5.2.2.2 Vibration ..............................................................................................................5-5
5.2.2.3 Power-carrying cables......................................................................................... 5-6
5.2.2.4 Impressed-current cathodic protection ................................................................ 5-6
5.2.2.5 Operating over ferrous rock dumps..................................................................... 5-6
5.2.2.6 Earth return path ................................................................................................. 5-6
5.2.2.7 Curved target course........................................................................................... 5-7
5.3 ROVs .................................................................................................................................. 5-7
5.3.1 Speed of Operation .................................................................................................... 5-7
5.3.2 Altitude above the Seabed ......................................................................................... 5-7
5.3.3 Tracked ROV .............................................................................................................. 5-8
6 Maintenance .............................................................................................................................. 6-1
6.1 System Description ............................................................................................................. 6-1
6.2 Coil Cable Continuity .......................................................................................................... 6-2
6.3 Fault Identification .............................................................................................................. 6-2
6.3.1 Fault on a Single Channel .......................................................................................... 6-4
6.3.2 Communications Failure ............................................................................................. 6-5
6.3.3 Poor Tracking Performance ....................................................................................... 6-6
6.3.4 Altimeter Failure ......................................................................................................... 6-7
6.4 Spares ................................................................................................................................ 6-8
6.4.1 Coils ........................................................................................................................... 6-8
6.4.2 Subsea pods .............................................................................................................. 6-8
6.4.3 Housings .................................................................................................................... 6-8

iv © Teledyne Limited DPN 402197 Issue 7.1
6.4.4 End caps .................................................................................................................... 6-8
6.4.5 Electronics .................................................................................................................. 6-9
6.4.6 Topside computer ....................................................................................................... 6-9
6.4.7 Altimeter ..................................................................................................................... 6-9
6.4.8 Cables ........................................................................................................................ 6-9
6.4.9 Other .......................................................................................................................... 6-9
7 System Specifications ............................................................................................................. 7-1
7.1 Specifications ..................................................................................................................... 7-1
7.1.1 Subsea Electronics Pod ............................................................................................. 7-1
7.1.2 Search Coil ................................................................................................................. 7-1
7.2 Performance ....................................................................................................................... 7-2
7.3 System Trials ...................................................................................................................... 7-3
7.3.1 Trials Configuration and Procedure ............................................................................ 7-3
7.3.2 Results ....................................................................................................................... 7-4
7.3.2.1 Accuracy ............................................................................................................. 7-4
7.4 Update Rate ....................................................................................................................... 7-6
A Operating Theory ..................................................................................................................... A-1
A.1 Electromagnetic Fields....................................................................................................... A-1
A.2 Field Detection ................................................................................................................... A-1
A.3 Signal Isolation................................................................................................................... A-2
A.4 Calculation ......................................................................................................................... A-2
B Options ..................................................................................................................................... B-1
B.1 Systems ............................................................................................................................. B-1
B.1.1 Coils ........................................................................................................................... B-1
B.1.2 Subsea pods .............................................................................................................. B-1
B.1.3 Topside computer ...................................................................................................... B-1
B.1.4 Altimeter..................................................................................................................... B-1
B.1.5 Cables........................................................................................................................ B-1
B.1.6 Other .......................................................................................................................... B-2
B.2 Dualtrack System ............................................................................................................... B-2
B.2.1 The Equipment........................................................................................................... B-2
B.2.2 The Differences.......................................................................................................... B-3
B.2.3 Scope of Delivery....................................................................................................... B-5
B.2.4 Physical Installation ................................................................................................... B-6
B.2.4.1 Search-coils ....................................................................................................... B-6
B.2.4.2 Subsea Pods ..................................................................................................... B-6
B.2.5 Electrical Connection ................................................................................................. B-7
B.2.5.1 System Configuration ........................................................................................ B-9
B.2.5.2 System Operation .............................................................................................. B-9
B.2.6 Power Supply Requirement ..................................................................................... B-10

DPN 402197 Issue 7.1 © Teledyne Limited v
B.3 Training ............................................................................................................................ B-10
C Cables and Tones .................................................................................................................... C-1
C.1 Tone Injection .................................................................................................................... C-1
C.1.1 Frequency Selection .................................................................................................. C-1
C.1.2 Connection to the cable ............................................................................................. C-2
C.1.2.1 Short cables....................................................................................................... C-2
C.1.2.2 Long cables ....................................................................................................... C-2
C.1.2.3 Fibre-optic cables .............................................................................................. C-3
C.1.2.4 General connection requirements...................................................................... C-3
C.1.3 Seawater Return Path ............................................................................................... C-3
D Coil Tester ................................................................................................................................ D-1
D.1 Pre-Operation .................................................................................................................... D-1
D.1.1 Coil Calibration Constants ......................................................................................... D-1
D.2 Operation ........................................................................................................................... D-2
D.2.1 Frequency Selection .................................................................................................. D-4
D.3 Fault Identification.............................................................................................................. D-5
D.4 Battery Replacement ......................................................................................................... D-5
D.5 Maintenance ...................................................................................................................... D-6
D.6 Specification ...................................................................................................................... D-6
E Reference.................................................................................................................................. E-1
E.1 Survey Details .................................................................................................................... E-2
E.2 System Configuration Details............................................................................................. E-2
F Index .......................................................................................................................................... F-1

vi © Teledyne Limited DPN 402197 Issue 7.1
List of Figures
Figure 1-1: Components of the HydroPACT 350 system ............................................................... 1-2
Figure 2-1: SEP mounting arrangement......................................................................................... 2-3
Figure 2-2: The coil array reference line......................................................................................... 2-4
Figure 2-3: Construction of the starboard coil triad ........................................................................ 2-5
Figure 2-4: Coil array mounting bar................................................................................................ 2-7
Figure 2-5: Coil separation reference marks .................................................................................. 2-8
Figure 2-6: 350 installation drawing................................................................................................ 2-9
Figure 2-7: Effects of altimeter horizontal offset ........................................................................... 2-10
Figure 2-8: System interconnection diagram................................................................................ 2-12
Figure 2-9: Simplified schematic of the current-loop .................................................................... 2-17
Figure 2-10: Link location on the SEP processor board ............................................................... 2-18
Figure 2-11: Link detail shown using the same orientation as in Figure 2-10 .............................. 2-19
Figure 3-1: System Configuration Wizard....................................................................................... 3-2
Figure 3-2: System Configuration Wizard - Summary .................................................................... 3-4
Figure 3-3: Threshold does not apply to vertical coils .................................................................... 3-5
Figure 3-4: Print Configuration ....................................................................................................... 3-7
Figure 3-5: DeepView - Run Window ........................................................................................... 3-11
Figure 3-6: DeepView - Forward Search Window ........................................................................ 3-14
Figure 3-7: Scope Window ........................................................................................................... 3-16
Figure 3-8: Spectrum Analyser Window ....................................................................................... 3-16
Figure 3-9: System Errors Window...............................................................................................3-17
Figure 3-10: Terminal Window ..................................................................................................... 3-18
Figure 3-11: Altimeter Configuration............................................................................................. 3-20
Figure 3-12: Altimeter Test ........................................................................................................... 3-21
Figure 3-13: External Output Configuration and Serial Port menu............................................... 3-22
Figure 3-14: Video Overlay Setup ................................................................................................ 3-23
Figure 3-15: Video Overlay Signal................................................................................................ 3-24
Figure 3-16: Video Overlay Enable/Disable button ...................................................................... 3-24
Figure 3-17: DeepView function keys........................................................................................... 3-26
Figure 3-18: Replay toolbar keys.................................................................................................. 3-27
Figure 4-1: Using the forward search mode ................................................................................... 4-3
Figure 5-2: ROV positioning errors................................................................................................. 5-2
Figure 5-3: ROV roll errors ............................................................................................................. 5-3
Figure 5-4: Sloping target ............................................................................................................... 5-4
Figure 5-5: Curved target ............................................................................................................... 5-7
Figure 6-1: Components of the 350 system ................................................................................... 6-1
Figure 6-2: Single channel failure................................................................................................... 6-4
Figure 6-3: Communications failure................................................................................................ 6-5
Figure 6-4: Poor tracking performance........................................................................................... 6-6

DPN 402197 Issue 7.1 © Teledyne Limited vii
Figure 6-5: Altimeter failure ............................................................................................................ 6-7
Figure 7-1: Vertical range measurement accuracy......................................................................... 7-2
Figure 7-2: Trials site...................................................................................................................... 7-4
Figure A-1: Lines of magnetic flux .................................................................................................. A-1
Figure A-2: Frequency ‘windows’ ................................................................................................... A-2
Figure B-1: Sub-sea components of the Teledyne TSS 350 System ............................................. B-5
Figure B-2: Sub-sea components of the Teledyne TSS 440 System ............................................. B-6
Figure B-3: Electrical interconnection of subsea components........................................................ B-7
Figure C-1: Tone injection – Short cables ......................................................................................C-2
Figure C-2: Tone injection – Long cables.......................................................................................C-2
Figure D-1: 350 System Parameters Configuration screen............................................................D-2

viii © Teledyne Limited DPN 402197 Issue 7.1
List of tables
Table 1-1: Components of the HydroPACT 350 system ................................................................ 1-2
Table 2-1: System interconnection diagram key .......................................................................... 2-12
Table 2-2: Power and communications cable............................................................................... 2-15
Table 2-3: Link settings for LK1 to LK5 ........................................................................................2-19
Table 2-4: RS232 connection to COM2........................................................................................ 2-22
Table 3-1: DeepView Menu Commands......................................................................................... 3-8
Table 3-2: System errors format................................................................................................... 3-18
Table 3-3: Terminal Window toolbar.............................................................................................3-19
Table 3-4: Altimeter configuration parameters ............................................................................. 3-20
Table 3-5: External Output Configuration ..................................................................................... 3-22
Table 3-6: Factory System Defaults .............................................................................................3-22
Table 3-7: DeepView Toolbar....................................................................................................... 3-24
Table 3-8: Run Window Toolbar................................................................................................... 3-25
Table 3-9: Replay toolbar function keys ....................................................................................... 3-27
Table 4-1: External Output format - Survey Mode.......................................................................... 4-6
Table 4-2: QC check code meaning – Survey mode...................................................................... 4-7
Table 4-3: External logging format – Forward search mode .......................................................... 4-8
Table 4-4: QC check code meaning – Forward Search mode ....................................................... 4-9
Table 4-5: Internal logging format – Survey co-ordinates............................................................... 4-9
Table 4-6: Internal logging format – Forward search mode.......................................................... 4-10
Table 4-7: Internal logging format – Signals packet ..................................................................... 4-11
Table 4-8: Altimeter output format – Benthos PSA 916................................................................ 4-12
Table 4-9: Altimeter output format – Teledyne TSS and Datasonics ........................................... 4-13
Table 4-10: Altimeter output format – Datasonics with pressure transducer................................ 4-13
Table 4-11: Altimeter output format – Ulvertech Bathymetric system .......................................... 4-14
Table 4-12: Altimeter output format – Simrad UK90..................................................................... 4-14
Table 4-13: Altimeter output format – OSEL bathymetric system ................................................ 4-15
Table 4-14: Tritech SeaKing Bathy format ................................................................................... 4-16
Table 6-1: Components of the 350 system..................................................................................... 6-1
Table 6-2: Connections to the coil cable ........................................................................................ 6-2
Table 7-1: Vertical measurement errors .........................................................................................7-5
Table 7-2: Lateral measurement errors ..........................................................................................7-6
Table B-1: Components of the Dualtrack system ........................................................................... B-5
Table C-1: Effects of tone frequency choice...................................................................................C-1
Table D-1: 350 System Subsea Parameters ..................................................................................D-3
Table D-2: 350 System Connector Cable Identification..................................................................D-3
Table D-3: 350 System Operating Parameters ..............................................................................D-4
Table D-4: Coil Tester Frequency settings and expected coil voltages..........................................D-5

DPN 402197 Issue 7.1 © Teledyne Limited ix
Revision History
Issue No. Date Details
7.1 January 2019 Service/support details and legal entity updated
7.0 November 2018 ECR 4535, plus scope of supply added.
6.0 July 2018 ECR 4529
5.1 March 2018 ECR 4512
5.0 December 2017 ECR 4507
4.0 October 2016 ECR 4438, plus updated DeepView screens.
3.5 February 2016 Minor update. SEP weight and dimensions updated. Figure 10-
12 updated.
3.4 June 2014 ECR 4242
3.3 November 2013 ECR 4187
3.2 October 2013 ECR 4172
3.1 June 2013 ECR 4108, and revised formatting
3.0 November 2012 ECR 3782.
2.6 June 2012 ECR 3762.
2.5 January 2010 ECR 3406.
2.4 15/01/2008 Added 350 Coil Tester section to Appendix E.
2.3 14/06/2007 Updated default comms to RS232.
2.2 16/02/2006 Corporate rebranding changes and SDC9 updates.
2.1 19/12/2003 Revised for latest software.
2.0 25/07/2000 First release to cover SDC8/DeepView/440.