Cameron has introduced its new Mark IV system, featuring a redundant, three point-of-distribution (POD) design as an option for its subsea BOPs. Conventional subsea BOP control systems use a two-POD design, providing a single spare if the primary control POD becomes unavailable. The Mark IV system’s third POD provides additional redundancy, which eliminates the need to pull the stack if one POD fails.
It can also improve the subsea control system’s availability to as much as 98%, and reduce the likelihood of a POD-related stack pull by as much as 73%.
Simplified design increases reliability and functionality in a smaller footprint. The Mark IV system’s simple design increases the functionality of each POD in a smaller, lighter package. Designed with 50% fewer tubing connections, the potential for leak paths is reduced, and the addition of redundant solenoid pilot regulators means they are no longer a single point of failure within the POD.
Each POD has 33% more available functions (160) to accommodate eight cavity stacks. The new POD is also designed with pressure-compensated pilot accumulators that adjust automatically for water depth. This feature prevents the chance of human failure and reduces maintenance costs.
The Mark IV is 26% smaller than its predecessor, and weighs one-third less than competitors’ control PODs.
Additional features include sub-plate-mounted valves and tungsten carbide coating on small valves for improved reliability; and pressure-compensated regulator pilot accumulators that adjust automatically.
Dimensions: 46in. × 49in. × 14.5in.
Weight: 23,000 lb
Compliant with API 16D/53, DNV Drill, and ABS CDS requirements
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