19.6 ROV SYSTEMS 19.6.1
ROV systems and tooling shall be selected based on the environmental conditions that are to be
expected at the worksite during the planned and contingency intervention / observation tasks.
19.6.2
ROV downtime, both planned and possible/unforeseen should be taken into consideration when
establishing required weather window.
19.6.3
ROV-dependent operations shall be carried out only with vessels equipped with 2 or more ROVs.
ROV thrust capacity should be 30% more than that required for the current speeds given in the site
specific environmental reports.
19.6.4
ROV tooling shall be provided with sufficient spares and back-up tooling to allow the work to proceed
with minimum delay.
19.6.5
It is recommended that a tether management system (TMS) be used in deepwater sites to ease the
deployment of the ROV to the worksite. The tether shall be of sufficient length to allow the ROV to get
from the TMS to the worksite.
19.6.6
Grab bars to aid ROV positioning for manipulative or observation tasks should be provided where
critical path ROV operations are planned.
19.6.7
For operations requiring assistance of both ROV(s) and diver(s), any restrictions on simultaneous
working should be clarified and considered in advance.
19.6.8
Once installed the launch and recovery system (LARS) shall be load tested to a factor of safety of 2.0.
19.7 TESTING 19.7.1
System Integration Testing shall be carried out onshore to prove that the integration of all components
and tooling can be achieved. This may involve the manufacture of mock-ups. If mock-ups are used,
great care shall be taken to ensure that the mock-ups replicate the actual item.
19.7.2
Dry tests and FAT should be carried out for critical and complex systems, the failure of which would
result in significant and unacceptable schedule delay.
19.7.3
Wet testing shall be considered for the actual ROV system to be used.
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