Principles of naval engineering - Historic Naval Ships Association

-I—Chapter 9-MACHINERY ARRANGEMENT AND PLANT LAYOUTMAIN FUEL OILVALVES (ONE TOEACKBOILER )TOOTHERBOILERSUPERHEATERSIDE BUHNERMANIFOLDRECIRCULATINGVALVETO OVERBOARD OROIL SETTLING TANK^^-^^ ^SATURATEO-SIDRECIRCULATING/^^ BURNER MANIFOVALVEi^RECIRCULATINGLINEDUPLEXSTRAINER^-03FHEATERS^ -I'-CKH,*-CXHHEATER BYPASS VALVEREMOTE -OPERATEDQUICK -CLOSING VALVEFSERVICE-CHECK PUMP,?< VALVETO FILLING AND DISCHARGEDECK CONNECTIONV9»—ixiFUEL OIL SERVICETANKFigure 9-21.— Fuel oil service system on ship with double furnace boilershaving straight-through-flow atomizers.38.63Suction and discharge valves allow the pumpsto be lined up for the delivery of fuel oil. Theremote-operated quick- closing valve in the supplymain on the discharge side of the fuel oilservice pump provides a means for rapidlyshutting off the fuel oil from a remote location.The remote operating gear for this valve isarranged so that the valve may be operatedfrom two places; (1) from the fuel oil pumpitself, and (2) from the fireroom escape trunkor from the deck above and near the accessto the space. Fuel oil meter and meter bypassvalves allow the fuel oil meter to be used orto be bypassed, as the situation requires; thefuel oil meter is bypassed when oil is beingrecirculated. A fuel oil heater bypass valve223