Navigare, я не возил ... пока-что Из литературы IGC Code Isoprene 1 - Special requirements: 14.4.3, 17.8, 17.10, 17.12 | | | | 17.8 Inhibition Care should be taken to ensure that the cargo is sufficiently inhibited to prevent polymerization at all times during the voyage. Ships should be provided with a certificate from the manufacturer stating : .1 name and amount of inhibitor added ; .2 date inhibitor was added and the normally expected duration of its effectiveness ; .3 any temperature limitations affecting the inhibitor ; .4 the action to be taken should the length of the voyage exceed the effective lifetime of the inhibitors. 17.10 Flame screens on vent outlets Cargo tank vent outlets should be provided with readily renewable and effective flame screens or safety heads of an approved type when carrying a cargo referenced to this section. Due attention should be paid in the design of flame screens and vent heads to the possibility of the blockage of these devices by the freezing of cargo vapour or by icing up in adverse weather conditions. Ordinary protection screens should be fitted after removal of the flame screens. 18.1.2 Products required to be inhibited should be refused if the certificate required by 17.8 is not supplied. | | | | | 1 This cargo is also covered by the IBC Code. Liquefied Gas Handling Principles On Ships and in Terminals Page 20, Table 2.2 Ингибитор нужен! Liquefied Gas Handling Principles On Ships and in Terminals Page 24 - 25 | | | | Moisture in inert gas can condense and in so doing hydrates can form in cargoes and inerted spaces can suffer from severe corrosion. When cold cargo is to be loaded, it is therefore important that the inert gas in cargo tanks has a sufficiently low dew point to avoid any water vapour freezing out and other operational difficulties. Furthermore, moisture can create difficulties particularly with butadiene, isoprene, ammonia and chlorine cargoes. Oxygen even in the small percentages found in shipboard produced inert gas is incompatible with butadiene, isoprene, vinyl chloride and ethylene oxide. In contact with oxygen, these cargoes may combine to form peroxides and polymers. | | | | |
Азотирование судовой установкой или с берега, наверняка меньше 0.2% О2 и низкий дью поинт. По идее, презентэйшен должен быть в задании. | | | | насколько я понял гассинг ап не нужен потому как почти не испаряется | | | | |
А азот куда? А какое давление будет в танках при предполагаемом кол-ве груза? Если возврат на факел дадут, то один сценарий, а если нет, то другой... В Корее зимой холодный бутадиен или бутен-1 тоже не хочет испарятся Приходится гонять насосом на топ спрэй для газинг апа... После выгрузки опять азотирование с содержанием О2 не более 1.5%, а далее в зависимости от следующего груза и спец условий фрактователя. Как-то так я себе это представляю. Добавлено спустя 13 минут 11 секунд:Не забыть сделать необходимые записи в Cargo Record Book for Ships Carrying NLS in Bulk.
Самое приятное в работе - собираться домой.
|