Date post: | 13-Jul-2015 |
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Inter-M® Pulse – Introduction
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Past Mooring Traditions - connected by shackles, kenters, and “H-Link” long term connector
“H-Links”
- designed to connect chains/ropes of different sizes together
- installed in some of the harshest waters in the world for over 25 years
- As a stand alone connector, the H-Link is relatively rudimentary and it was logical that it could be enhanced in its design
- Far beyond the scope of “just” a chain connector
Inter-M® Pulse – Introduction• Using the knowledge and experience of “H-Link”
design and manufacture, the “H-Link” developed into a working component that could be used offshore to allow twist to be taken out of chain/wire systems.
• The Inter-M® Swivel was developed and has been used offshore in extreme environments as a “longer term” connector with all of the DESIGN/INTEGRITY requirements built in.
• Still in its basic form of an H-Link chain to chain connector, the Inter-M® swivel added functionality to its offshore requirements.
• Throughout the trials and offshore use of the swivel, the customer feedback and requests for an intelligent line monitoring connector lead to development of the Inter-M® PULSE.
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Inter-M® Pulse Sea TrialsTo ensure test the technology of the Inter-M® Pulse , a 76mm (800T MBL) unitwas installed on the Ocean Nomad Semisubmersible in the North Sea during thewinter of 2011/12 for a six month drilling campaign.
Mooring System- Chain and fibre makeup
- Installed at the fibre/shackle connection
Trial Location- Everest 22/10a
- Operator was BG
Conditions & Results- Sea-states of around 12m
- Inter-M® Pulse sent accurate line tensions and inclination readings to the control room
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Inter-M® Pulse Sea TrialsThe Inter-M® Pulse was installed over the stern roller of the Ocean Nomad.
The units are designed for MODU and/or FPSO installation.
After a successful installation, the unit was immediatelyoperational and feeding line tensions and inclination readings to the surface.
The readings have since been verified and documented.
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Acoustically linked / Hardwired
H-Link Chain Connection
Battery and load cellhousing
Inter-M® Pulse
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Graphical user interface:
• Raise alarm when a mooring line fails
• Monitor performance of mooring lines
• Monitor mooring cable creep
• Underwater cable free acoustic communication
• Ultra-low power design to extend the battery life and prolong service
Inter-M® Pulse
Acoustic Real-time Mooring Monitoring System
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Inter-M® Pulse
Key Benefits on a MODU or FPSO
• Full history of mooring line
• Acoustic data transmission
• On-demand data upload
• Traffic light alarm system
• Stern roller and/or ‘A’ Frame installation
• Suitable for moored FPSO and MODU
• Post-hurricane information system that saves inspection time and costs