Marine Installation Manual 2022-03 xi
List of Figures
X62DF-S2.0
4-19 Trace heating cable arrangement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
4-20 Dimensioning and filling process of lubricating oil drain tank . . . . . . . 4-33
4-21 Arrangement of vertical lubricating oil drains for 6-cylinder engines . 4-34
4-22 Lean burn with pilot ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
4-23 Lean-burn operation window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
4-24 Maximum achievable power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42
4-25 Section view of an integrated membrane tank . . . . . . . . . . . . . . . . . . . . 4-43
4-26 Section view of a free-standing Type A tank. . . . . . . . . . . . . . . . . . . . . . 4-44
4-27 Section view of a free-standing Type B tank of moss design . . . . . . . . 4-44
4-28 Section view of different free-standing Type C tanks installed below
the deck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
4-29 Type C tank on the deck of a vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
4-30 Pressurised Type C tank solution with NBOG handling by the
gensets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47
4-31 Pressurised Type C tank solution with NBOG handling by the
gensets and the main engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
4-32 Non-pressurised tank solution, drawn for an LNGC . . . . . . . . . . . . . . . 4-48
4-33 An LNG sub-cooler within an integrated tank . . . . . . . . . . . . . . . . . . . . . 4-50
4-34 Design fuel gas supply pressure requirements . . . . . . . . . . . . . . . . . . . 4-52
4-35 Fuel gas supply pressure control at the engine inlet (engines
with iGPR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-54
4-36 Fuel gas supply pressure control at the GVU inlet (engines
with GVU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
4-37 Fuel gas pressure level definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
4-38 Fuel gas supply system with the iGPR . . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
4-39 The GVU-OD™ from Wärtsilä . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58
4-40 The GVU-ED™ from Wärtsilä . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-59
4-41 Gas leak test sequence (engines with iGPR) . . . . . . . . . . . . . . . . . . . . . 4-64
4-42 Gas leak test sequence (engines with GVU) . . . . . . . . . . . . . . . . . . . . . . 4-64
4-43 Pilot fuel oil system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65
4-44 Pilot fuel high-pressure system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-66
4-45 Fuel oil system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-68
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