Abstract

A method is disclosed herein for detecting cracks of a fluid storage tank due to breakage of a wall of the fluid storage tank. In an example embodiment, the method includes positioning an enclosed pressure-resistant jacket around an outer wall of the fluid storage tank, controlling a temperature of the fluid in the fluid storage tank by allowing a liquid cooling or heating medium to flow in the enclosed pressure-resistant jacket at a pressure lower than a pressure x applied within the fluid storage tank, maintaining the pressure in the pressure-resistant jacket lower than the pressure x, sampling the cooling or heating medium from an air pool provided in a passage of the cooling or heating medium, and analyzing components of the cooling or heating medium, while preventing contamination of the fluid in the fluid storage tank with the liquid cooling or heating medium.

IPC Classes  ?

• F16K 49/00 - Means in or on valves for heating or cooling
• B08B 17/00 - Methods preventing fouling
• B65D 88/74 - Large containers having means for heating, cooling, aerating or other conditioning of contents
• B65D 90/50 - Arrangements of indicating or measuring devices of leakage-indicating devices

Abstract

A method and a plant for preventing contamination of a fluid in a fluid storage tank with a liquid cooling or heating medium is provided. In a method of controlling a temperature of a fluid in a fluid storage tank under a predetermined pressure by allowing a liquid cooling or heating medium to flow in an enclosed pressure-resistant jacket provided around the outer wall of the fluid storage tank, said method comprises allowing the cooling or heating medium to flow in the enclosed pressure-resistant jacket at a pressure not higher than the pressure x (atm) applied within the fluid storage tank, preferably lower than x (atm), whereby preventing contamination of said fluid with said cooling or heating medium. A plant for the method is also provided.

IPC Classes  ?

• F16K 49/00 - Means in or on valves for heating or cooling
• B08B 17/00 - Methods preventing fouling
• B65D 88/74 - Large containers having means for heating, cooling, aerating or other conditioning of contents
• B65D 90/50 - Arrangements of indicating or measuring devices of leakage-indicating devices

Abstract

Disclosed are a method and a device for preventing contamination of a fluid by a cooling/heating medium in a fluid storage tank wherein the temperature is controlled by the cooling/heating medium. Provided are a method and a device for the method, wherein the temperature of a fluid storage tank (2) is controlled using a liquid cooling/heating medium by flowing the cooling/heating medium within a sealed pressure resistant jacket (4) provided on the outside of a wall surface of the fluid storage tank (2) placed under a constant pressure, and the cooling/heating medium flows in the sealed pressure resistant jacket (4) at a pressure equal to or lower than a pressure x (atm), and preferably lower than x (atm), of the inside of the fluid storage tank (2), so as to prevent contamination of the fluid by the cooling/heating medium in the storage tank (2).

IPC Classes  ?

• B65D 90/22 - Safety features
• B65D 88/74 - Large containers having means for heating, cooling, aerating or other conditioning of contents