Rechargeable subsea force generating device and method

A method to reset a low pressure in a low pressure recipient that is part of a reset module, the low pressure recipient being connected to a subsea pressure control device for providing the low pressure, the method comprising:

• receiving a hydraulic liquid at a first high pressure in the low pressure recipient, the low pressure recipient being configured to have first and second chambers separated by a first piston, the first chamber being configured to receive the hydraulic liquid and the second chamber being configured to include a gas at a low pressure, wherein the first chamber is further configured to have a port via which the hydraulic liquid enters and exits the first chamber, and wherein the second chamber is sealed such that no hydraulic liquid enters or exits via a port;
• compressing the gas in the second chamber such that the first piston moves to expand the first chamber;
• receiving a second high pressure in a reset recipient, which is configured to have third and fourth chambers separated by a piston assembly, wherein the third chamber is separated by the second chamber of the low pressure recipient by a wall, and the second high pressure makes the piston assembly to move to expand the fourth chamber and to squeeze the third chamber;
• and
• moving the first piston along a given direction, under a direct action of a first extension element of the piston assembly of the reset recipient, such that the second chamber is reestablished and the first chamber is squeezed,
• wherein the first extension element is configured to move along an opposite direction independent of the first piston.