NST PM2 hatch cover

January 1970

Mainstream were initially engaged to carry out an initial design/layout of an opening mechanism for a 3.5m x 9m hatch cover door. Following this we were asked to complete detail design and supply of construction drawings of the door itself to allow NST staff to arrange its construction and installation.  NST had identified the basics of what they wanted and how they wanted it to work, leaving Mainstream to develop and detail a solution. The door was installed in November with feedback from the engineering and operations teams being very positive. The design was very economic to manufacture by local contractors, “looks the part” and is reliably functional.