Siclick is correct and I should have indicated it is not required just good practice to follow as per the Gas Turbine Builders Association 'Code of Practice' A2.6 & A2.7 Remote Control and Emergency Fuel Shut-off Systems.

The JMA only suggest "It is strongly recommended that a manually operated shut-off device is fitted" Hey but look at the pictures here and YouTube videos of turbine fires to draw a conclusion that a cheap device that stops fuel instantly to a fire is worth it.

The point to make I hope is that with a pump islotator the pump is off instantly (and can be linked to failsafe). As suggested earlier a pump at full chat pumping against a closed valve has the potential for something to leak adding to the fire problem. Anyway I am sorry to see good models destroyed and for those guys loss.

Paul