MBC Activation examples - Gall Thomson

MBC Activation examples

Gall Thomson Marine Breakaway Coupling activation examples

gallthomson activation examples
Photos from a typical incident in 2015. Post activation shows Gall Thomson Petal Valve.

Note: Client confidentially requires that names and precise locations are not published.


Somalia June 2017

Event: Activation.
Cause: Tanker breakout due to tanker mis-manoeuvring.
Result: Gall Thomson Flip-Flap MBC performed as designed.

Background

Gall Thomson MBC activated in response to CBM tanker breakout. A wrong manoeuvre during offloading operation caused the rupture of the mooring hawser.

The MBC closed instantaneously the upstream and downstream Flip-Flap valves. No damage was caused to marine hoses and no pollution was reported.

The MBC was sent to Gall Thomson for a fast track refurbishment operation and the MBC is now back in service. The end user is considering the procurement of a spare MBC in order to keep the terminal in operation and fully protected after an MBC activation.

The Gall Thomson MBC performed at the precise moment and in response to the circumstances for which it was designed and in accordance with its pre-set parting load.


India June 2017

Event: Activation.
Cause: Excessive weather conditions provoked tanker breakout.
Result: Gall Thomson Petal Valve MBCs performed as designed.

Background

Wind speeds in excess of 75 knots caused an oil tanker to break its moorings. The resulting tensile load transferred from the hoses to the Marine Breakaway Couplings (MBCs). Two Gall Thomson Petal Valve MBCs activated and closed the upstream and downstream flow of crude oil within the transfer system. Separation of the hose strings then took place.

No damage was caused to the marine hoses and no pollution was reported.

The Gall Thomson MBCs performed at the precise moment and in response to the circumstances for which they were designed and in accordance with their pre-set parting loads.


Indonesia March 2017

Event: Activation.
Cause: Pressure surge in hose transfer system.
Result: Gall Thomson Petal Valve MBC performed as designed.

Background

Unexpected and uncontrolled pressure surge of media within the hose transfer system. The event would have caused asset damage and spill but for the designed activation of the fitted Gall Thomson MBC.

The Gall Thomson Petal Valve MBC activated and closed the upstream and downstream flow of media. Separation of the hose strings then took place.

No damage was caused to transfer assets and marine hoses and no pollution was reported.

The Gall Thomson MBC performed at the precise moment and in response to the circumstances for which it was designed and in accordance with its pre-set parting loads.


Ghana 2017

Event: Two activations on two separate occasions.
Cause: Tanker breakouts.
Result: Gall Thomson Petal Valve MBCs performed as designed.

Background

Gall Thomson MBCs activated due to CBM tanker breakouts. Each MBC closed the upstream and downstream flow of media. Separation of the hose strings then took place.

No damage was caused to marine hoses and no pollution was reported.

The Gall Thomson MBCs performed at the precise moment and in response to the circumstances for which they were designed and in accordance with each pre-set parting load.


Nigeria 2017

Event: Activation.
Cause: Tanker breakout.
Result: Gall Thomson Petal Valve MBC performed as designed.

Background

Gall Thomson MBC activated in response to CBM tanker breakout. The MBC closed the upstream and downstream flow of media. Separation of the hose strings then took place.

No damage was caused to marine hoses and no pollution was reported.

The Gall Thomson MBC performed at the precise moment and in response to the circumstances for which it was designed and in accordance with its pre-set parting load.


Points to note

Each MBC is manufactured with a tailored set of parameters for a specific terminal, therefore MBCs cannot be interchanged.

Following the MBC activation, the customer utilised the Gall Thomson MBC4 service.

13 MBCs have successfully activated and delivered protection from asset damage and pollution in India since 1986. All were caused by tanker breakouts or extreme pressure surge events.

Information and data from all known activations are assessed and processed into the Gall Thomson’s continuous Research and Development program.