Scuba tanks is pieces of equipment that are used to hold the compressed air that divers use while diving. Choosing the correct scuba tank for diving activities are an important step in preparing for a dive. Scuba tanks are made of different material, and each of those different materials have different characteristics regarding the way that the scuba tank will become buoyant when filled with compressed air.
For instance, aluminum scuba tanks and steel scuba tanks are the two most most common types of scuba tanks that diving divers use. Aluminum scuba tanks are often used for dive rental equipment because aluminum scuba tanks are more light to carry when the divers are on land, and because aluminum scuba tanks exhibit positive buoyancy when the tank is completely empty of compressed air. A positive buoyancy allows for the divers to not rapidly sink to the ocean floor while using an aluminum scuba tank.
How to Choose a Scuba Tank and Stay Safe
By contrast, steel scuba tanks are denser than aluminum tanks, yet hold more gas within that tank. Additionally, the divers breathes out the air within the tank, the steel scuba tanks become increasingly heavy. Buoyancy is the scientific term that indicates the ability of an object to either sink or to float within a specified liquid.
The type of scuba tank that a person utilize during a dive affects buoyancy. For instance, the more that the divers consume the air within the tank, aluminum scuba tanks become more buoyant; divers must account for this by adding air to their Buoyancy Control Device (BCD). Additionally, individuals that use steel scuba tanks find that the tanks become less buoyant as they breathes out the air within the tank.
If an individual puts too much lead weight on there equipment and utilizes an aluminum scuba tank, they may struggle to counteract the downward drift of their body within the water. In contrast, if an individual utilizes too little lead weight with a steel scuba tank, they may struggle to descend to the ocean floor. In each of these scenarios, the individual should of test the scuba tank in shallow water to ensure that the scuba tank and lead weight are balanced properly.
The size of the scuba tank and the pressure within the tank will determine the amount of air that is available for dives. The pressure within the scuba tank is measured in pounds per square inch (PSI); the higher the PSI of the scuba tank, the more air that can be contained within the tank. The higher the PSI of the scuba tank, the longer that a person can remain underwater.
Additionally, the larger the size of the scuba tank, the more air that will be available for long dive activities. Small scuba tanks, like pony bottles, are used to provide emergency or backup air for divers. Pony bottles are small in size and weigh little when divers carry them.
However, large scuba tanks hold more air for longer dives, yet their size makes them more difficult for divers to carry underwater. In order to remain safe while utilizing scuba tanks, there are certain requirement for the scuba tanks. For aluminum scuba tanks, the tanks must undergo a hydrostatic test every five years to ensure that the tank is safe for use by divers.
Additionally, the steel scuba tanks must undergo visual inspection to determine the condition of the steel tank. If any dent are detected in the tank that are deeper than a pencil eraser, a professional should inspect the scuba tank for the safety of the divers. Additionally, divers should always rinse the scuba tanks with fresh water after each dive to prevent the buildup of corrosive elements in the saltwater tank.
Finally, divers should avoid leaving their scuba tanks pressurized for prolonged period (over many months). Gas planning is another process that is required for divers to properly execute dives. Gas planning requires that an individual calculate the amount of air that an individual will use during the dive.
In order to plan their dive correctly, divers must know their air consumption rate at the surface. Additionally, divers can utilize the rule of thirds to assist in planning the gas consumption for their dive. The rule of thirds indicates that divers should plan to use one-third of their scuba tank for the descent and the portion of the dive at the bottom, one-third of the tank for ascending to the ocean’s surface, and save one-third of the tank for emergency use.
By utilizing the rule of thirds, divers ensure that they have enough gas to safely return to the surface after their dive. Furthermore, gas planning is an essential part of diving that ensure that divers dont run out of air while they are diving underwater.
