Abstract: Embodiments conveyed herein seek to disclose an apparatus, system, and method to protect an epithelial layer from surface contaminants. The apparatus can include a portable enclosure that includes an internal space(s). At least one deployable covering can be affixed to a surface of one of the internal spaces. The apparatus can have a deployed state and a closed state. The deployable covering may extend distal to the portable enclosure in the “deployed” state and may be positioned within the internal space in the closed state. The system can include a bench having at least one functional surface and the apparatus can be positioned proximate to functional surfaces. Deployable coverings may be positioned adjacent to and coplanar with functional surfaces. The method can include converting the apparatus from closed to deployed and positioning the deployable covering(s) adjacent to and coplanar with at least one functional surface.

Abstract: A process for scavenging hydrogen sulphide from a mixed phase system, in particular a hydrocarbon fluid having a liquid phase and a gaseous phase, is described. The hydrocarbon fluid contains a high level of hydrogen sulphide, which can be above 5000 ppm by weight in the gaseous phase of the fluid prior to treatment. Formaldehyde, preferably water, with is added to the fluid. The process is particularly useful for in-line scavenging of hydrogen sulphide from sour crude oil containing very high hydrogen sulphide levels. The hydrogen sulphide content of the crude oil that is delivered to the platform is reduced to safe and commercially acceptable levels and solid by-product formation is insignificant.