A subsea pump system is adapted to close a hydraulic ram of a blowout preventer. A cylinder cable of controlled rotation applies a web-securing force to the web under the laser beam to secure the web so that the web does not flutter or shift during laser processing. Each of the at least two modules of the component portion can comprise at least one connection element and can be removably secured to one or more other of the at least two modules via the connection elements. If any of the install modules is verified as having the possibility of performing the malicious operations, any another one of the install modules that is verified as not having the possibility revokes the any install module verified as having the possibility. An impeller within the housing is shaped to transfer fluid tangentially and upwardly within the housing to co-operate with the upward angle of the outlets. The method relates to electrophoretic deposition of nanotubes, and allows a control of the number of deposited nanotubes and positioning within a defined region.