TS-130
The Advanced Aframax Tanker Engine Room Design Analysis
Stipe BELAK*
ABSTRACT
The paper analyzes the engine room as an energetical center of the Aframax type tanker. The engine room is designed to meet the Lloyd Register 98 (Provisional Rules for Enhanced Availability of Engineering Systems for Propulsion and Steering) requirements. It is the basis for FMEA (Failure Mode and Effect Analysis) performance.
The engine room system design is based on the two prime movers application and single emergency prime mover. Two prime movers are considered as complete energetical source for propulsion, for cargo and balast system, for steering and for the reserve propulsion.
The system enables 50% power reserve availability. The system meets the R2-SA+ design requirements of American Bureau of Shipping, and could be reduced to R1-S and R1 design requirements. R1-A design of the system enables also resrve propulsion and reserve steering.
Key Words: Engine Room, Reserve Propulsion, Reserve Steering, Tanker, Design Analysis
1. INTRODUCTION
To design the Aframax tanker engine room in the way to meet the Lloyd Register Provisional Rules for Enhanced Availability of Engineering Systems for Propulsion and Steering or to meet the R2-SA+ requirements of the American Bureau of Shipping considering the usual engine room design, as shown in the Fig. 1, is not particularly significant problem, but neither the aim of this paper.
This paper is aimed to investigate the ultimate consequences of the possible engine room design considering the synthesis of the project solution ensuring the propulsion and steering elements unification. The results can be, from the present state of technique (shipbuilding practice), considered a little bit bizarrely ones, but in any case they represent the ultimate consequence that can be reached according to the given requests.
The complete analysis and the solution synthesis are based on the papers Belak [2] and Belak S. and Covo P. [3] in which the segments of this problem are anaiyzed. The solution synthesis method is presented in the paper Belak [1].
The design solution synthesis is done on the R2-SA+ requirements analysis and the additional requests to the solution. The additional requests are done to enable the project solution development and to form the basis for research of the ultimate solutions whether the solution is, from the present shipbuilding and maritime practice, acceptable or not.
The additional requests are defined to enable solutions that introduce the unattended engine room design, to unify the energy sources, to initiate the research of the jet and other types of propulsions particularly the efficiency of such devices.
Fig. 1 The Tanker Engine Room and Pump Room Outline Scheme
