A fluid containment apparatus with a floor and a side wall is provided. A wall support is included that supports the side wall and can be moved between a supporting position and a collapsed position. The side wall is movable from a containment position to a collapsed state to allow access for vehicles or other objects to the floor. The wall support and side wall are subsequently movable back to their containment and supporting positions.

In some examples, a drain pan comprises a composite material forming a reservoir and a drain. The composite material comprises a polymeric resin and a reinforcing fiber. The reservoir is to catch a liquid from an engine and to support a step load. The drain is to drain the liquid from the reservoir. In some examples, a method comprises attaching a drain pan to an aircraft proximate an engine. The drain pan comprises a composite material forming a reservoir and a drain. The method further comprises catching a liquid from the engine in the reservoir of the drain pan and draining the liquid from the reservoir through the drain. In addition, the method comprises supporting a step load on the reservoir of the drain pan.

Provided is a bearing arrangement for a wind turbine including a bearing housing and a drive shaft, whereby the drive shaft is arranged within the bearing housing in an axial direction along a longitudinal axis of the bearing housing. The bearing arrangement further includes a downwind bearing and an upwind bearing, whereby the downwind bearing and the upwind bearing are arranged between the bearing housing and the drive shaft. The bearing housing includes a drain outlet arranged in a bottom part of the bearing housing, the bottom part of the bearing housing being located underneath the drive shaft in a direction of gravity, whereby at least one inner side of the bottom part of the bearing housing is arranged so as to form a funnel, whereby the drain outlet is an opening of the formed funnel.

The crude oil container has a first container and a second container securely fastened around the exterior of a surface casing of a conventional surface oil well. The crude oil container has a left container and a right container, each having a bottom and walls forming a volume for storage of leaked crude oil. The left and right containers each has a well side with a well receiver surface located between mounting surfaces. The mounting surfaces of the left container are sized to mount flush against the mounting surfaces of the right container. Once so mounted, the surface casing of the oil well is held firmly within the well receiver surface of the left container and the right container such that any crude leaked from the oil well will drip into the left container storage volume and/or right container storage volume of the crude oil container.

Methods for protecting a ground surface from exposure to material that may be spilled from or leak from one or more containers, which includes setting up a portable spill containment system that includes at least one grate for supporting the one or more containers. The grate includes a plurality of drain holes. The portable spill containment system includes a flexible bag configured to contain spills or leakage from the one or more containers that pass through the drain holes of the grate. In one embodiment, the portable spill containment system includes a plurality of pedestals that support the at least one grate. In another embodiment, the portable spill containment system includes an interconnected grid structure formed of separate and distinct spaced apart beams.

A bearing housing structure (101) comprises a support section (102) for supporting a bearing (117), a reception interface (103) for receiving lubrication grease, and grease channels (104-106) for conducting the lubrication grease to both sides of the bearing which are mutually opposite in the axial direction of the bearing. The bearing housing structure comprises exit conduits (107, 108) for allowing the lubrication grease to exit the bearing from the both sides of the bearing and a grease reservoir (109) for storing the lubrication grease exiting the bearing via one or more of the exit conduits. The bearing housing structure is capable of operating in different positions so that the axial direction of the bearing can be horizontal, vertical, or slanting.

A bearing housing structure (101) comprises a support section (102) for supporting a bearing (117), a reception interface (103) for receiving lubrication grease, and grease channels (104-106) for conducting the lubrication grease to both sides of the bearing which are mutually opposite in the axial direction of the bearing. The bearing housing structure comprises exit conduits (107, 108) for allowing the lubrication grease to exit the bearing from the both sides of the bearing and a grease reservoir (109) for storing the lubrication grease exiting the bearing via one or more of the exit conduits. The bearing housing structure is capable of operating in different positions so that the axial direction of the bearing can be horizontal, vertical, or slanting.

A bearing housing includes a hollow shell with opposite ends having coaxial openings for at least one bearing element at each end thereof. The shell between the openings has, when assembled in position for use, a bottom with a bottom surface, the bottom having an oil outlet and the bottom surface having an oil outlet opening. The cavity for impurities is arranged below the bottom surface of the shell, and the cavity is arranged in flow communication with the oil outlet and the oil outlet opening.

A bearing housing includes a hollow shell with opposite ends having coaxial openings for at least one bearing element at each end thereof. The shell between the openings has, when assembled in position for use, a bottom with a bottom surface, the bottom having an oil outlet and the bottom surface having an oil outlet opening. The cavity for impurities is arranged below the bottom surface of the shell, and the cavity is arranged in flow communication with the oil outlet and the oil outlet opening.

An oil storage and filtration system for an engine unit includes an on/off valve that defines an operating phase when receiving supply air and in an on position and a standby phase when in an off position or not receiving the supply air. The system also includes a fill/drain valve that defines a drain state and a fill state which respectively correspond to emptying and filling oil from/into the engine unit. The system also includes a control valve, a pressure/vacuum valve, and a storage tank. The storage tank stores oil in a pressurized condition during the fill state, a vacuum condition during the drain state, and an atmospheric condition during the standby phase. The also includes a vacuum generator in fluid communication with the storage tank during the drain state and fluidly isolated from the storage tank during the fill state.