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2 TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2 2020

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The dynamic of oxidative changes in rapeseed oil during maritime transport determined by storage conditions

Ocieczek A., Kaizer A., Zischke A.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2020

Vol. 14, no. 1

107--113

In order to provide quality and safety of liquid cargo carried by sea, it is necessary to obey the rules of its protection. During maritime transport edible oils are prone to detrimental influence of many external factors such as supply of oxygen, of water, of metal ions and of pollution, as well as changes of temperature and mixing caused by ship movement. Due to them, they could undergo oxidation reactions, hydrolysis, polymerization and various types of physical transformation. On account of them the deterioration of nutritional, health and sensory qualities of fat could occur. The aim of the study was the assessment of the dynamic of changes with oxidative character (peroxide value and TBA index) which could appear in edible oils depending on their storage conditions. The analysis, which lasted 12 weeks, concerns rapeseed oil. Oxidative changes were registered every two week. The storage conditions in the atmospheric air induced danger connected with oxygen presence, whereas nitrogen blanketing eliminated this risk factor. The assessment also includes the influence of temperature of storage (indoor temperature 20˚C or refrigeration temperature 4˚C) and mixing of the fats. The results indicate that nitrogen blanketing, lowering the temperature and eliminating the mixing during storage of oil have highly positive impact on reduction of oxidative changes in fats.

Requirements regarding safety maritime transport of explosives materials

Chmieliński M.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2020

Vol. 14, no. 1

115--120

Author of this publication identifies safety requirements regarding maritime transport of dangerous goods class 1. Various modes of transport are used to hazardous materials that often include maritime transport of hazardous materials, such as explosives. Dangerous Goods’ refers to items that are potentially dangerous during transportation. The above paper is based of techniques in ship operations, as well as the desirability of having more comprehensive recommendations which included dangerous goods. Dangerous goods have special transport requirements to eliminate or minimize the risk of injuring people or damaging property and the environment. The Recommendations are aligned with relevant IMO codes and the IMDG Code in particular. The above article is based on the results of safety research on maritime transport of hazardous materials, as Sworn Expert of the Polish Chamber of Maritime Commerce.