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A shutdown valve (also referred to as SDV or emergency shutdown valve, ESV, ESD, or ESDV; or safety shutoff valve) is an actuated valve designed to stop the flow of a hazardous fluid upon the detection of a dangerous event. This provides protection against possible harm to people, equipment or the environment.
After Selfless became Clearview Records, Rocket to Russia was reissued on compact disc in 1998 with the catalog number CRVW 28. [7] Reviewing this version of the album for Allmusic, Stewart Mason rated it 2 stars out of 5, saying that of the albums in the series it was "probably the most faithful to the original. This is not at all surprising ...
Two clear view screens on the navigation bridge of a tugboat A clear view screen or clearview screen is a glass disk mounted in a window that rotates to disperse rain, spray, and snow. A clear view screen is typically driven by an electric motor at the center of the disk, and is often heated to prevent condensation or icing.
There are four 'shots'. The first is placed on the fore-and-aft axis, 40 feet (12 m) from the barge. Shots 2, 3, and 4 are placed athwart ship at distances of 30, 25 and 20 feet (9.1, 7.6 and 6.1 m). The distance refers to the near side of the floating platform. [2]
Shock chlorination is a process used in many swimming pools, water wells, springs, and other water sources to reduce the bacterial and algal residue in the water. Shock chlorination is performed by mixing a large amount of sodium hypochlorite , which can be in the form of a powder or a liquid such as chlorine bleach , into the water.
When any of these pool chemicals are used, it is very important to keep the pH of the pool in the range 7.2 to 7.8 – according to the Langelier Saturation Index, or 7.8 to 8.2 – according to the Hamilton Index; higher pH drastically reduces the sanitizing power of the chlorine due to reduced oxidation-reduction potential (ORP), while lower ...
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