WinGD X72DF - Page 19

Marine Installation Manual 2021-08 xi
List of Figures
X72DF
4-27 An LNG sub-cooler within an integrated tank . . . . . . . . . . . . . . . . . . . . . 4-46
4-28 Design fuel gas supply pressure requirements . . . . . . . . . . . . . . . . . . . 4-48
4-29 Fuel gas supply pressure control at the engine inlet (engines
with iGPR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
4-30 Fuel gas supply pressure control at the GVU inlet (engines
with GVU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51
4-31 Fuel gas pressure level definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51
4-32 Fuel gas supply system with the iGPR . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
4-33 The GVU-OD™ from Wärtsilä . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-54
4-34 The GVU-ED™ from Wärtsilä . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
4-35 Gas leak test sequence (engines with iGPR) . . . . . . . . . . . . . . . . . . . . . 4-60
4-36 Gas leak test sequence (engines with GVU) . . . . . . . . . . . . . . . . . . . . . . 4-60
4-37 Pilot fuel oil system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
4-38 Pilot fuel high-pressure system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-62
4-39 Fuel oil system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
4-40 Mixing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67
4-41 Mesh size difference between absolute and nominal. . . . . . . . . . . . . . . 4-70
4-42 Fuel oil filter arrangement ‘A’ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-71
4-43 Fuel oil filter arrangement ‘B’ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75
4-44 Fuel oil system — Arrangement with only MDO/MGO or MGO . . . . . . . 4-76
4-45 Fuel oil viscosity-temperature diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4-81
4-46 Air supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82
4-47 Design proposal of WinGD’s sludge oil trap . . . . . . . . . . . . . . . . . . . . . . 4-87
4-48 Design proposal of a manually bottom-drained sludge oil trap . . . . . . 4-88
4-49 Design proposal of an automatically bottom-drained sludge oil trap . 4-90
4-50 Arrangement of automatic water drain . . . . . . . . . . . . . . . . . . . . . . . . . . 4-91
4-51 Determination of exhaust pipe diameter . . . . . . . . . . . . . . . . . . . . . . . . . 4-92
4-52 Ventilation system arrangement 1 — Engine room ventilation
system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-95
4-53 Ventilation system arrangement 2 — Direct engine ventilation
system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-96