Liquefied Gases Handling


The present document prepared by the specialists of one of the most authoritative entities in the world of maritime shipping has been released with the specific aim to provide required technical guidance to the crew members of the vessels engaged in marine transportation of the natural liquefied gas. The material contained in the book draws on the remarkable experience of the authors, all of them being recognized members and experts of the gas industry.

Their collaboration has eventually resulted in this guidebook explaining the established best practices for the proper management of the shipping operations in the ports. The authors have also illuminated the profile of the risks commonly associated with the gas operations - this information will be useful to the persons administering the ports and providing the essential services.

The publication shall definitely be treated as a very essential guidance for all people dealing with the design, construction and subsequent operation and maintenance of the LNG terminals in the ports as the information contained in its pages can be used when conducting the reassessment of the risks that are subject to frequent changes taking into account the nature of the operations.

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This training booklet was prepared and released by the leading maritime training provider. It is accompanies with the video for better understanding of the subject. Do not, however, get confused as we have another book coming under same title which is not a part of this set but is also very useful. This second edition of the booklet is intended to be used for training all crew members up to and including Master, to get them duly familiarized with the hazards associated with transportation of the liquefied gases.

The book will provide them with a good technical knowledge of the fire hazards and explain what shall be done in order to prevent such fires. They will also get to know the fundamental principles of the fire hazard management. In addition, the author of the book are demonstrating the firefighting equipment that shall be used and explain the procedures to be followed in case of fire.

This training set has already been proven very useful and gained popularity in all parts of the world. Several case studies have been included in the booklet. There is also a concise yet quite informative glossary of terms. The assessment questions and answers are there as well for tracking the learning progress.

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This publication developed by the professionals of the SIGTTO organization was intended to advise the people engaged in the works on board gas carriers on the proper procedures relating to the technical maintenance of the PRVs, standing for the pressure relief valves, address various operation problems, possible faults and emergency closure.

The idea of the authors was to provide some general guidance to the crew members of the vessels - note that the volume is not expected to replace any of the instructions or manuals provided by the manufacturers of the equipment in question.

Opening with some introduction, the content of the volume covers the general requirements that are applicable to the PRVs including requirements to their design and installation on board. The types of the PRVs are addressed in detail, covering both spring operated and pilot operated pressure relief valves. The emergency closure of the PRVs is considered particularly important and is therefore dealt with in a separate chapter.

The publication also covers the in-service testing of the valves. Five appendices provide additional information including extracts from the IMO IGC Code, pressure levels, terminology and definitions used etc.

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The content of the present handbook is providing the result of the cooperative work of the group of experts. Their intention was to create a book that would facilitate better understanding to be shared between the government officials and the companies of the various economic, commercial and technical aspects.

Note that the authors of the volume did not intend to deal with promotion of any particular business model; their idea was rather help stakeholders better understand their aims in developing the LNG projects and opening future LNG trade markets. The volume provides a good framework for evaluation of the LNG projects considered important, and this is applicable to both importers and exporters of the natural gas.

The authors hope that the information provided in this volume together with any following dialogues that this volume engenders, will eventually improve the existing flow of information and help erect the human capacity accelerating the development of the natural gas, make the generation of the power cleaner, and promote energy security and further economic growth. The publication will be interesting to the people involved in the development of the natural gas and any related projects.

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This officially released SIGTTO publication is intended to provide required guidance to the cargo strainer installations on board tankers carrying LPG cargoes. For many years, these strainers have not been in use since until now they have not been considered necessary equipment.

The reason for that was that the LNG cargo used to be treated as the "clean" one with the filtration commonly limited to the strainers fitted in the loading line at the time of the new construction, i.e. at the shipyard. The contamination on board the vessel was provided by good housekeeping combined with the regular visual checks during the installation and commissioning of the line, together with the post-delivery inspections at regular intervals.

However, the installation of the strainers is now a requirement to be complied with, noting the significant role they can play in preventing the pollution and maintaining the clean transfer of cargo - this is one of the most important parts of the process that is a key element in preventing damage to the terminal equipment as well as any serious contamination.

This document will provide readers with the recommendations that have been developed on the basis of the practical experience related to the different types of strainers, their location and performance..

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The vetting of the vessels by the charterers, sellers, buyers and all others involved is one of the integral parts of the ship operation. The shipboard incidents such as the fires and collisions, ship grounding, pollution of the marine environment and others, can all have very serious consequences for the owners, operators, ship charterers, owners of the cargo and many others. It shall be noted that the ship owner is considered responsible for the management and quality of the vessel.

But, when using a third-party ship, the charterers, ship buyers/sellers and operators of the terminals get exposed to the certain risks. The present publication was developed and released by SIGTTO in order to explain the ship vetting process and also to cover the specific aspects of vetting on the liquid natural gas carriers. The authors have supplemented the book with the several valuable practices taken from the real shipping companies.

The proper knowledge of all of this information is absolutely necessary for all people engaged in operating the vessel of the LNG type, considering all specifics of the construction and operation. All of the best practices have been covered and duly explained by the recognized industry professionals.

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This is the official SIGTTO publication covering one of the most important aspects of the marine transportation of the liquefied gases; their nature requires that same is carried out in closed containers, considering the temperatures and pressures involved. It is therefore critical to properly quantify the transported cargo and this, in turn, will require complex procedures and considerations.

Another item to consider and to add to the complexity is the number of different calculation procedures, each for the specific accuracy level and value. It is essential to have a thorough understanding of the differences between above stated procedure in order to clearly get the values of the loaded and discharged cargo. Recognizing the necessity for a good guidance on these matters, the SIGTTO organization developed and released this second edition of the monograph.

The contents of this book have been fully updated and revised by the recognized experts in the field. The info contained in the monograph will serve as a background to the people working in the shipping organizations, and whose day to day activities involve dealing with the LNG custody transfer. However, it will be equally interested and useful for self-education.

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At the INTERTANKO meeting held back in 2015, the Council of the Organization made a decision to expand their services so that they cover the demands of the constantly growing involvement of the Members with the interest of the liquid gas industry. The first meeting of the newly founded Gas Tanker Committee was held in the following year.

At that time, the Members shared their concerns and ideas relating to the commingling/blending of the subject cargoes when carried on board their vessels, considering the information gap and lack of the proper guidance experienced today. The present publication contains the results for the working group activity, starting with the examination of the legality of conducting blending of the LPG on board ship, as per the applicable SOLAS regulation.

The main reasons for blending cargo has been addressed together with the identification of the principles of blending and hazards commonly involved with the process. The book provides valuable guidance which shall be referred to every time the blending/commingling is carried out. Moreover, the commercial implications have also been dealt with, taking into account their ever growing importance.

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