“Liten seilbåt” + “dykker” til 80+ meters dybde(dobbelte av det som er nødvendig for trykk kammer) + forårsaker eksplosjon under vann(høyt trykk) der fragmentene fra røret ligger 50(!?) meter fra detonasjonen…
*skeptisk
Depth of Nord Stream 2A. Source: North Stream AG Let’s consider the bathymetric characteristics of the position of the Nord Stream 1 and 2 pipes (Figures 2 -4). The total thickness of the polymer coating is about 4.2 mm. The pipeline sections passing in the deepest areas are equipped with bend protectors, so-called deformation dampers, directly welded into the pipe and made of the same alloy, steel as the main pipes, but with a thicker wall and more delicate machining at the ends in order to match the main pipes. Let’s consider the bathymetric characteristics of the position of the Nord Stream 1 and 2 pipes (Figures 2 -4). Given the coordinates of the incident points, we can say that in the case of the North Stream 1 string A, the pipeline failure occurred at a depth of -85 m. In the case of string B, the pipeline rupture occurred at a depth of -84 m. In the case of Nord Stream 2 A, the pipeline breakdown occurred at a depth of -87 m and -73 m. As for the peculiarities of Nord Stream pipeline design, it should be noted that apart from primary corrosion protection, it has secondary protection, which is provided by anodes made of galvanic material (Chen et al., 2022). This protection represents a separate (independent) system, the effect of which is aimed at pipeline protection in case of damage of external pipe coating. Anode alloys for preserving pipeline integrity for the calculated operation time have been determined by tests, the results of which showed that zinc alloy is appropriate for the sections with low and medium mineralization, for the remaining sections the use of indium-activated aluminum has been declared (Aulia et al., 2021).
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40 meters/130 feet
The main reason why the recreational diving depth limit is 40 meters/130 feet is safety. Yes, you can exceed this point, but you need technical diving skills to do that. Beyond 40 meters/130 feet, it is necessary to make decompression stops and even use different gas mixtures, depending on the depth you reached.16. okt. 2020
