Page 280 - Ship Construction.DJ Eyres 6Ed
P. 280

Ch23-H8070.fm  Page 269  Wednesday, October 18, 2006  7:38 AM
                                         Liquefied Gas Carriers                  269
                           Weather protective
                           cover                                  External
                                                                  insulation





                                       Vertical
                             conditionพื่อการศึกษาเท่านั้น---
                                       tubular
                                       support for
                                       piping and
                          งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
                                       access





                                Water                            Ballast

                                                           Drip tray for small
                                                           leak detection
                                                          ึ

                                       Warm condition

                      --- ใช้เ                                             9% Nickel
                             Cold

                                                                           steel
                                                                           equatorial
                                                                           ring



                        Method of absorbing
                        expansion/contraction



                                  FIGURE 23.3 Kvaerner-Moss spherical tank


                                                                             2
                 are normally designed for working pressures up to 17.5 kg/cm  which
                 corresponds to the vapour pressure of propane at 45 °C, the maximum
                 ambient temperature the vessel is likely to operate in. The tanks can be
                 constructed from ordinary grades of steel, are mounted in cradle-shaped
                 foundations, and if below deck are fitted with domes protruding through
                 the deck to which are fitted all connections. Wash bulkheads are fitted in
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