One of our regular customers, a supplier of safety systems for the oil and gas sector, required a custom designed load measuring pin to replace an existing shackle pin. The load shackle was for sub-sea use to monitor the mooring tension of a single point mooring buoy to protect its mooring line by alerting operators to any instances of approaching overload. Any such occurrence could cause the mooring line to break, potentially allowing the tanker to drift. This is particularly critical during oil transfer operations due to the increased risk of oil spillage.
Rated to 250 tonnes, the load pin was designed to include a cage assembly to protect the cable from damage and was supplied with a sub-sea 4 way connector. This made the load pin suitable for long term use in water depths of up to 200m. A bespoke anti rotation arm was also designed to fit the specific shackle model specified by the customer. Because it would be used in an oil and gas application, ABS witnessing of proof load and calibration was required, along with a certificate of conformity, 3.1 materials certificate and manufacturers certificate of origin.
The customer free issued an Intrinsically Safe amplifier for calibration with the load pin, as the larger system they were supplying had to be approved for hazardous area use. This gave a 4-20mA output for simple integration into the PLC.
Our customer was very happy with the load pin performance, and have subsequently placed orders for many more high capacity submersible load shackle pins.
The main criteria for the project were as follows:
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These high capacity submersible load shackles were supplied with a unique custom designed cage to protect the cable from damage, and anti-rotation arm to fit the customers load shackle. Because it was being used in an oil & gas application, ABS witnessing of both the proof load and final calibration was required.
Many of our customers require 3rd party witnessing, and we regularly have representitves from DNV, Lloyds, ABS etc at our premises, so this is a routine procedure for use here at LCM Systems and something we can easily accomodate when required.
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