Page 20: of Marine Technology Magazine (April 2015)

Tech File

Table 1

Summary of the Main Subsea Requirements per type of Application

Req. Applications Ocean Oil & Mining ROVs/ Infra- Natural Energy Gas AUVs structure Science

Water Depth X X X X X XShallow Water: <= 1,000 ft. (corrosion, sea life) X X X X XDeep Water: >1,000 ft.

(water pressure, distance to shore, full remote operation, sea currents) X X X X X

Ultra-Deep Water: > 6,000 ft (very high water pressure, extreme sea conditions, distances, large equipment)

Safety Signi? cant risk of Low Very high High Low High Low injury to people or environment

Reliability/ Cost of downtime High Very high High Medium High Low

Availability due to unexpected ? eld failures

Maintainability Ability to repair system Varying Continuous Varying Intermittent Continuous Intermittent on location or on sea production production production production usage usage surface (scheduled downtime)

Figure 2:

Pressure Compensation

System

April 2015 20 MTR

MTR #3 (18-33).indd 20 MTR #3 (18-33).indd 20 4/6/2015 10:32:05 AM4/6/2015 10:32:05 AM