Nitrogen gas generators; nitrogen generation equipment and components and structural and replacement parts therefor; high volume, high purity, high pressure nitrogen generating systems designed specifically for heavy duty offshore and onshore use for applications where injection of nitrogen at high pressures is a critical part of the process; self-contained nitrogen generating systems featuring nitrogen membranes, filters and buffer vessels, high pressure compressors, diesel engines, high pressure storage buffer vessels, flow control panels to control nitrogen flow and purity, external connections for feed air, nitrogen and fuel, integrated control systems, buffer diesel fuel reservoirs and purpose built heavy duty containers, sold as a unit; nitrogen gas generators, nitrogen generation equipment and nitrogen generating systems for offshore and onshore oil and gas industry applications