Submarine blowing tanks-

An emergency main ballast tank blow is a procedure used aboard a submarine that forces high-pressure air into its main ballast tanks. The high-pressure air forces ballast water from the tanks, quickly lightening the ship so it can rapidly rise to the surface. That accident resulted in substantial redesign of submarine emergency blow systems by the United States Navy: "Part of this initiative was to end the practice of brazing smaller pipes, and to instead start welding and doing X-ray inspection of joints to verify their integrity. From Wikipedia, the free encyclopedia. December

Submarine blowing tanks

Submarine blowing tanks

Submarine blowing tanks

Submarine blowing tanks

Submarine blowing tanks

London: Arms and Armour Press. The piping mounted directly above the manifold connects the MBT blowing Hormey pussy with the high-pressure air manifold, through two hammer valves. The sentinel valve is set to blow at a pressure of psi. The pound MBT blow manifold. From there it is directed by the blow valves into the blow lines connecting with the main ballast tanks. In railway practice this would have been a " pannier tank ", but for submarines the "saddle" label remained. In other projects Wikimedia Commons. When the tanks are to be blown separately, the individual tank blow valves, the corresponding group stop check valve or valves, and the hammer valve are opened in the order given. Saddle tanks are not fitted to Submarine blowing tanks naval submarine designs, as external fittings are discouraged in order to improve underwater Submarine blowing tanks and reduce hydrodynamic noise detectable by an enemy's passive sonar. When the ship is rigged for diving, all individual tank blow valves on the pound MBT blow manifold, as well as the two group stop check valves, are open.

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As the CO warmed up to his tirade, his mustache began its famous bristling movements and the toilet paper began waving in the breeze of his fervent exhalations directed at the petrified Aux of the Watch. Submarine blowing tanks in Physics, Mechanical Engineering, Submarines. From there it is directed by the blow Submairne into the blow lines connecting with the main ballast tanks. With the tanks full of water the submarine was stable, but when emptied, this large buoyant volume low down led to excessive rolling. Air Submarine blowing tanks bank pressure to psi passes through two manually operated hammer valves and two group Submarine blowing tanks check valves to the pound MBT blowing manifold. This manual is designed to teach the importance of the air systems on a submarine, the many and indispensable forms of work performed by each system, and the methods of operating each system for specific tasks. This chapter deals with the first of these, the pound MBT main ballast tank blowing system. Asked in Submarines What advantages does a submarine have over other warships? Whenever he was angry which Nudist beaches pefkos a dozen times a day his face used to clench up in Submarnie squinty-eyed glare with a clenched out-thrust jaw that made you instinctively take a step back out of karate range. It is located on the starboard side of the control room with its Afterglow inxs feat sona gage next to it. Knowledge there is free, and you can use the post to check facts and learn more. From his waist to the Submarone of his ball cap he was covered in, well, a serious coating of sanitary-tank discharge.

The main ballast tanks are normally filled with sea water when the submarine is submerged.

  • Submarines have ballast tanks.
  • The main ballast tanks are normally filled with sea water when the submarine is submerged.
  • I may have forgotten a name or two in the ensuing years, but let me just mention up front that the commanding officer at that time was a legendary yet extremely forceful and somewhat intimidating character with a fiercely bristling mustache.

An emergency main ballast tank blow is a procedure used aboard a submarine that forces high-pressure air into its main ballast tanks. The high-pressure air forces ballast water from the tanks, quickly lightening the ship so it can rapidly rise to the surface. That accident resulted in substantial redesign of submarine emergency blow systems by the United States Navy: "Part of this initiative was to end the practice of brazing smaller pipes, and to instead start welding and doing X-ray inspection of joints to verify their integrity.

From Wikipedia, the free encyclopedia. December Retrieved 23 December Categories : Submarines. Hidden categories: Commons category link is on Wikidata. Namespaces Article Talk. Views Read Edit View history. In other projects Wikimedia Commons. Languages Deutsch Edit links. By using this site, you agree to the Terms of Use and Privacy Policy. Wikimedia Commons has media related to Emergency surfacing.

Thanks, Rob, I hope those were tears of laughter! Hottest Questions. Asked in Example Sentences Use the word submerge in a sentence? To supply air to the pound MBT blowing system, one of the hammer valves is opened. Ballast tanks are utilzed for this purpose. A firehose team mustered topside to wash off the sail— and everything else that had been downwind of the sanitary discharge piping. On the other hand immerse, sink, drown and dip are a few synonyms to submerge.

Submarine blowing tanks

Submarine blowing tanks. Diving and Surfacing

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The main ballast tanks are normally filled with sea water when the submarine is submerged. These tanks cannot be pumped; therefore, when the submarine is surfacing, compressed air must be used to blow the water out through the flood ports to the sea. Two separate systems are provided to blow the main ballast tanks. This chapter deals with the first of these, the pound MBT main ballast tank blowing system.

The second system, the pound MBT blowing system, is used only when the ship is surfaced. It is discussed in Chapter 5. Figure shows the location of the lines and component parts of the pound MBT blowing system.

The system is inside the pressure hull and extends from the MBT blowing manifold in the control room fore and aft along the starboard side to the main ballast tanks and fuel ballast tanks.

It is located on the starboard side of the control room with its pressure gage next to it. The piping mounted directly above the manifold connects the MBT blowing manifold with the high-pressure air manifold, through two hammer valves. The maximum working pressure of the pound main ballast tank blowing system is psi. It is tested hydrostatically to a pressure of psi, or percent of the maximum working pressure.

Hammer valves. Air at bank pressure to psi passes through two manually operated hammer valves and two group stop check valves to the pound MBT blowing manifold. The flow of the air is regulated by the hammer valves so that it is delivered at the required pressure. Normally only one hammer valve is used for blowing; in case.

The group stop check valves permit the blowing of tanks by groups. The manifold is protected by a sentinel valve and two relief valves Figures and set to blow when the pressure in the pound system reaches psi.

The sentinel valve is set to blow at a pressure of psi. When the sentinel valve opens, it acts as a relief valve for comparatively small rises in pressure and gives notice of excess pressure in the system. To supply air to the pound MBT blowing system, one of the hammer valves is opened. The valve permits air from the pound manifold to enter the MBT blow manifold at a reduced pressure.

The pressure gage of the MBT blow manifold is closely watched, to guard against the pressure exceeding psi. The depth at which the submarine is operating will have a direct effect on the resistance offered to the air in blowing the main ballast tanks and therefore will build up the pressure within the system more rapidly at greater depths than it will on the surface.

Since the hammer valve regulates the volume of air entering the pound MBT blowing system, while the resistance offered to this air varies with submerged depth, it follows that when submerged at great depths, the hammer valve must be opened cautiously, otherwise the pressure within the system will build up rapidly and exceed the safe working pressure.

When the gage indicates that the pressure is dropping, the hammer valve is opened wider to maintain the required pressure. When blowing is finished, the hammer valve is shut. Blow lines extend from the forward section of the pound MBT blow manifold to tanks No.

Figure From the after section of the manifold, blow lines to tanks Nos. Any tank, or any combination of tanks, can be blown by opening the required individual tank valve, or valves, the group valves, and finally the hammer valves. When the submarine is rigged for diving, all the blow valves on the manifold, except the fuel ballast tank valves, are open, as are the two group stock check valves.

See Section 3B. The individual regulator valves at the main ballast tanks are open, while the MBT blow hammer valves on the pound manifold are shut. The two supply valves to. To operate the pound MBT blow system, the hammer valve is opened and air is admitted to the blow manifold, from which it is directed to the main ballast tanks by the lines of the system.

At the point where each blow line enters the tank, it is provided with a regulator valve. The regulator valve acts as a combination stop and check valve and is equipped for securing the stop in any position required to equalize the flow of air into the tanks. Detailed instructions for blowing specific tanks or combination of tanks are given in Chapter 8. It is located on the starboard side of the control room, adjacent to and aft of the low-pressure pound manifold, with the connecting piping directly above it see Figure The pound MBT blow manifold is made up of two parts, the forward section and the after section.

The upper half of Figure shows the construction of the forward section of the manifold. The after section is of similar construction lower half of Figure except that it contains one additional blow valve. The forward section has four blow valves and the after section of the manifold has five blow valves.

The blow valves and the two group stop check valves have no permanently attached handles, but are provided with square-ended stems. A double-handled socket wrench is supplied to fit these stems, and the valves are opened and shut by applying the valve wrench to one stem at a time.

This lessens the possibility of accidentally opening or shutting the wrong valve. The stems of the blow valves for the fuel ballast tanks are furnished with chain-attached locking caps and padlocks as a safe guard against accidental blowing of the tanks when they contain fuel oil. Both sections of the pound MBT blow manifold, as well as the lines carrying the pound air, are capable of withstanding depth pressure. From there it is directed by the blow valves into the blow lines connecting with the main ballast tanks.

When all the tanks are to be blown simultaneously, the tank blow valves on the manifold, the two group stop check valves, and a hammer valve are opened in the order given. When the tanks in either the forward or the after group are to be blown, the blow valves, the group stop check valve for that group, and the hammer valve are opened.

When the tanks are to be blown separately, the individual tank blow valves, the corresponding group stop check valve or valves, and the hammer valve are opened in the order given.

When the ship is rigged for diving, all individual tank blow valves on the pound MBT blow manifold, as well as the two group stop check valves, are open.

Detailed instructions for main ballast tank blowing operations are given in Chapter 8. They control air pressure only by regulating the volume of air admitted to the system. The pound MBT blow manifold. Previous Chapter. Sub Air Home Page. Next chapter.

Submarine blowing tanks

Submarine blowing tanks

Submarine blowing tanks