Abstract: A method for monitoring a control of a parameter of one or more devices or systems in an oil or gas production site includes receiving process data, the process data being a result of the control of the parameter of the one or more devices or systems in the production site; smoothing the process data using a polynomial filter while preserving features of the process data to obtain smoothed data; and applying a pattern recognition algorithm to the smoothed data to determine whether there is a malfunction condition in the one or more devices or systems.

Abstract: A device for trimming around sprinkler heads which is engageable with a line trimmer. The device has a predetermined size and comprises a cylindrical dome shaped member having a substantially flat upper surface portion for engagement with such line trimmer. Such cylindrical dome shaped member has a plurality of grooves, which have a predetermined shape, formed in a wall portion which extends from the flat upper surface portion of such cylindrical dome shaped member for a predetermined distance and a means engageable with the device for securing the cylindrical dome shaped member to such line trimmer.