Scheduling transshipment operations in maritime chemical transportation

Master'sMASTER OF ENGINEERIN

Tramp Ship Scheduling Problem with Berth Allocation Considerations and Time-dependent Constraints

This work presents a model for the Tramp Ship Scheduling problem including berth allocation considerations, motivated by a real case of a shipping company. The aim is to determine the travel schedule for each vessel considering multiple docking and multiple time windows at the berths. This work is innovative due to the consideration of both spatial and temporal attributes during the scheduling process. The resulting model is formulated as a mixed-integer linear programming problem, and a heuristic method to deal with multiple vessel schedules is also presented. Numerical experimentation is performed to highlight the benefits of the proposed approach and the applicability of the heuristic. Conclusions and recommendations for further research are provided.Comment: 16 pages, 3 figures, 5 tables, proceedings paper of Mexican International Conference on Artificial Intelligence (MICAI) 201

Effecting a framework for a national oil spill contingency plan for the Kingdom of Cambodia

Constant increase in an annual oil consumption world-wide from 880,632 million gallons in 1983 to 1,004,268 million gallons in 1993 demonstrates the grgmng v \u27 mr 1 n n iilii iltn in \u27 ‘ of 0j]_SQl_USinto the coastal and marine .....\u27 ‘ The most catastrophic oil spills reportedly took place in 1979 when about 193 million gallons ofoilweredischargedintotheseas.Withnoexception, \u27.I A threats of oil nnllntinn \u27 since the nation araduallv involves with ma_u\u271imetransnort and oil and gas ‘ ‘ ‘ When introduced into the seas, an oil spill presents two kinds of negative impacts: ecological impact, including impact on biological processes, marine plankton, fish and shellfish, marine mammals, birds communities and ecosystems, human health, and on shore vegetation, and economic impact, including impact on fishing industry, tourism industry, shipping sectors and on other industrial uses. Toprevent,mitigateandminimisethreatsofoil pollutioninCambodia, C . Plan(NCPlis Jtoensureatimelyand effective response to oil pollution incidents by pre-designating the responsible organisation and providing adequate resources. The plan addresses issues, including emergency notification, incident evaluation and plan activation, response strategies, sensitive area identification, and communication system. To be effective, the plan should be supported by legislation. Various levels of emergency response should be provided beginning with local plans and expanding to national and regional plans

Ship Routing with Pickup and Delivery for a Maritime Oil Transportation System: MIP Modeland Heuristics

This paper examines a ship routing problem with pickup and delivery and time windows for maritime oil transportation, motivated by the production and logistics activities of an oil company operating in the Brazilian coast. The transportation costs from offshore platforms to coastal terminals are an important issue in the search for operational excellence in the oil industry, involving operations that demand agile and effective decision support systems. This paper presents an optimization approach to address this problem, based on a mixed integer programming (MIP) model and a novel and exploratory application of two tailor-made MIP heuristics, based on relax-and-fix and time decomposition procedures. The model minimizes fuel costs of a heterogeneous fleet of oil tankers and costs related to freighting contracts. The model also considers company-specific constraints for offshore oil transportation. Computational experiments based on the mathematical models and the related MIP heuristics are presented for a set of real data provided by the company, which confirm the potential of optimization-based methods to find good solutions for problems of moderate sizes

How Different Materials are Carried on the Routes of India in Supply Chain.

In this research , it was presented that how there are different kind of materials which can be transported by commercial vehicle, various category of heavy vehicles, weight segments for carrying distinct product with safety, emission standard for vehicles and numerous challenges faced while transporting the goods. This study focusses on five category material, commercial vehicles, weight, new emission norms and challenges. For analysing this paper descriptive coding was used so that data can easily be divided into these categories. The result shows that for loading and unloading of materials documents, workforce, equipment and safety kit are needed, different type of commercial vehicle is needed for carrying distinct material like liquid in tankers, parcel in container and generic product in trailers, safety measures like plastic covers and straps for open body vehicles, SS tank for chemical products and wooden or cardboard sheets in containers, the new norms has improved the engines, vehicles produce less pollution, better safety equipment, only improvement is done but no major changes has been noticed. Finally, the challenges faced in transit are theft, less margin, low infrastructure, harassment and corruption