Liquefied Gases Handling

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.

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.

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.

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..

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.

A good training officially provided by SIGTTO for those involved in maritime transportation of liquid gases. The students, who have successfully completed the lesson, should be considered as having enough knowledge of the common types of hazards associated with such activity, including flammability, toxicity, low pressure and temperatures, chemical burns and others. The first in the list, flammability, is treated as the most dangerous one.

That is the reason why the ship designers pay so much of their attention to arrange for the most effective containment of the transported cargoes in order to limit the amount of gases that escape to the atmosphere. In addition to that, the vessels and ports are in possession of the relevant design specifications for the electrical arrangements ensuring elimination of any ignition sources in the hazardous areas.

All gases that are carried in bulk on board gas carriers, except for the chlorine, are of flammable nature, and the vapors are easily ignited. This does not relate to the ammonia requiring higher energy of ignition. The fires that normally follow the leakage of ammonia are less likely… The lesson will provide all essential information that shall be possessed by everyone dealing with marine gas transportation in a safe manner.

The present document was developed and officially released by SIGTTO in order to offer readers, including the operators and designers of the vessels engages in marine transportation of the liquid natural gases, the professional guidelines on the general requirements that are applicable. Note that we also have the similar publication dealing with selection of the valves for the LPG, or liquid petroleum gas, application.

The valves used in such services will be designed for the operating temperature range from 80 to minus 180 degrees Celsius. The content of the document will be of particular use for the storage of the LNG products and their transportation; however, it will be equally useful to the representatives of the other industries involving LNG. There are specific requirements applying to the design of the valves to make sure that they will work safely and efficiently in the cryogenic systems.

The authors of the publication intended to explain the essentials of the design and subsequent testing of the valves for cryogenic applications, with the technical requirements paid due attention. All of the major and commonly referred standards and technical codes have been listed at the end of the document. Though very compact, the booklet will still be of great assistance.

The LPG carriers are ships intended for marine transportation of the gases in the liquid form of substance which would otherwise be a gas, should the ambient conditions be normal (temperature and atmospheric pressure). The subject gases can be toxic, flammable or both toxic and flammable, so they shall be paid ultimate attention and dealt with caution.

In addition to their toxicity and flammability, the main hazards associated with the carriage of the liquid gases are normally the vapor release and the effect that the low temperatures have on the ship structure and personnel on board. This introductory document was prepared by the professional and experienced captain willing to share his practical experience. It is absolutely recommended to all crew members working on board vessels carrying such cargoes.

Starting with the general information about the characteristics of the liquid gases based on the API approach, the publication then tells you about the relevant regulatory framework, the IGC Code in the first turn. All classes of the liquid gas carriers have been covered in the document, with the attention paid to the advantages and disadvantages of each class of vessels. Numerous photographs supplement the text wherever it is required to provide visual aids.