INGENIEUR
Figure 10 : ROV system on a raised platform .
take multiple additional sensors with various data signal types i . e ., RS-232 , RS-485 , or ethernet .
The removed telemetry line is replaced with a hard wire instead of a fibre optical ( FO ) cable . This is only true for a work class ROV as it normally carries only one FO cable . For the heavy work class , there is no need for a FO cable as it normally carries extra FO lines as a contingency . Note that hard wire telemetry cables are only suitable for the work class ROVs due to the length of the umbilical .
For multiple sensor attachments , the client is informed that the contractor and tool rental company may need extra days to install the system interface and bench testing it with the ROV ’ s system .
Examples of additional ROV tooling include a torque tool , a soft line cutter , a wire cutter , a water jetting unit , a dredge pump , and an underwater welding unit .
Once a contract is awarded , the ROV contractor team members have to start immediately on the following tasks .
1 . Project / operation engineer / manager : a . Checks the ROV matrix for the required certification of the ROV system . b . Provides project mobilisation milestones to the client . c . Informs the tool rental companies of the mobilisation date .
68 VOL 90 APRIL-JUNE 2022