Technical English language

15. Rules of gas transportation by car
Transportation of liquefied gases by road provides a professional and responsible approach. This is due to the high risk of transit. Raw materials are too susceptible to ignition and explosions, leading to the application of certain precautionary measures. At the same time, responsible specialists envisage all sorts of situations on the highway and the possibilities of their prevention.
The transit of liquefied gas by machines takes place strictly according to the rules of delivery. Therefore, it is allowed exclusively to the filling complex. But used cars only to transport a small amount of raw materials for short distances. This is due to the fact that such transit over long distances is ineffective and inappropriate from an economic point of view. The condition of the vehicles for delivery must meet all current requirements.
All cars are equipped with warning signs to inform other drivers about dangerous goods. Therefore, on the back of the vehicle placed certain identification marks. Preparation for transportation and the transit operation itself must be strictly regulated by responsible specialists and the organization of cargo transportation.

16. Oil storage and tank classification
There are laboratories that cooperate with different SSS (State Standard Sample), a sample of a substance or material, the chemical composition and physical properties of which are typical for a particular group of substances or materials and have certified values ​​of values. They are used to ensure the uniformity of measurements.) Oil and petroleum products and often come into contact with options with a shelf life of more than 3 years. There are such manufacturers of SSS, who believe that the long shelf life of their products is their unique special feature.
SSS with a long shelf life is most often produced on a natural basis, in places where crude oil is produced. Oil is a substance that contains a mixture based on the sum of many components, such as hydrocarbon compounds with atoms of sulfur, nitrogen, oxygen, organic acids and heavy metals. In general, there is very little chance of maintaining the properties of such a mixture over a long period. It is important to understand that a lot of different factors affect the quality of a SSS:
• starting composition of components;
• transportation, its features;
• conditions and methods of storage, etc.
Packaging plays an important role, because it is extremely difficult to make perfect and perfect storage conditions in order to remove all possibilities of air penetration when using a container with a screw cap.
It is impossible to ensure complete tightness for a long period of storage. The shelf life of crude oil may be extended. It happens that the storage process becomes even worse due to the fact that manufacturers often issue to their customers the relevant documents for a “fake” extension of the shelf life of the SSS. Therefore, as a result, the laboratory can work more fully even with a sample of 15 years old, whose properties are significantly different from those indicated in the passport.