A system includes a reservoir comprising a top and a bottom and a first pump assembly comprising a first sump portion extending downwardly through a top opening at least partially into the reservoir and having a first sump end for submerging below a surface of a first fluid in the reservoir. The system further includes a first skirt extending around the first sump portion downwardly from the top to define a skirt volume within the reservoir, the first skirt having a skirt lower portion for submerging below the surface of the first fluid in the reservoir and spaced away from the bottom of the reservoir to permit a flow of the first fluid to the first sump end and having a skirt upper portion forming a seal with the top to limit a flow of a second fluid disposed above the first fluid from entering the skirt volume.

An automated sealing process (100) for sealing a casing, the casing comprising a first casing portion (107) having a first sealing surface (115), and a second casing portion having a second sealing surface configured to engage the first sealing surface (115), the first casing portion (107) being assembled from at least two components such that the first sealing surface (115) comprises a joint (100) between the components, the process (100) comprising: applying a surface treatment to the joint (117) of the first sealing surface (115) using an automated treatment apparatus (101); and applying a sealant to at least one of the first sealing surface (115) and the second sealing surface prior to bringing the first and second sealing surfaces into engagement.

An oil sump assembly comprises an oil reservoir with a flange. A framework interconnects the flange and the engine mounting surface, and comprises a first frame part that provides an interface between the flange and the engine mounting surface, and a second frame part that is removably fixated to the first frame part by an internal fixation arrangement. A recess is formed between the first and second frame part. The flange extends into the recess and is sandwiched between sidewalls of the recess by a first gasket that covers the first and second side of the flange. The flange and the first gasket are clamped onto each other by the internal fixation arrangement between the first and second frame part. A second gasket is arranged for sealing a connection between the first frame part and the engine mounting surface.