Piping - Class 1

The statement is true because a union is a type of pipe fitting that allows for easy assembly and disassembly of pipes without having to manipulate or manipulate the pipes themselves. Couplings, on the other hand, require the pipes to be manipulated and connected together. Therefore, the union is a more convenient option for assembly and disassembly purposes.

The two most common pipe materials in our units are carbon steel and stainless steel. Carbon steel is commonly used for its high strength and durability, making it suitable for various applications. Stainless steel, on the other hand, is known for its corrosion resistance and hygienic properties, making it ideal for industries that require sanitary conditions.

The Grayloc coupling is designed to provide a "zero" leakage solution for various applications. It can effectively handle a wide range of pressures, from full vacuum to 420 MPa, and temperatures ranging from -220C to 925C. This indicates that the coupling is capable of maintaining a tight seal and preventing any leakage, making the statement true.

The welding neck flange is the one used in high pressure and temperature systems. This type of flange has a long tapered hub, which provides reinforcement and strength to the flange. The welding neck flange also has a smooth transition from the flange to the pipe, reducing turbulence and maximizing flow efficiency. Due to its design and strength, it is commonly used in applications where high pressure and temperature conditions are present.

Standard length is 22 feet.

The schedule number in this context refers to the pipe schedule, which is a standardized system used to specify the wall thickness of pipes. It is a numerical value that indicates the thickness of the pipe's walls, with higher numbers indicating thicker walls. Therefore, the schedule number does indeed specify the wall thickness of the pipe.

All of the above materials (PVC, ABS, Polybutylene, and Polyethylene) can be used for low pressure, low temperature systems handling corrosives. These materials are known for their resistance to corrosion and can withstand the harsh conditions of such systems. They are commonly used in industries where corrosive substances are handled, ensuring the durability and longevity of the system.

From NPS 14 and up, the nominal size corresponds with the OD of the pipe. This means that for pipes with a nominal size of 14 inches or larger, the outer diameter of the pipe will be equal to the nominal size.

Pipe is specified by Nominal Pipe Size and Schedule Number. The Nominal Pipe Size refers to the approximate inner diameter of the pipe, while the Schedule Number indicates the thickness of the pipe walls. Together, these two factors determine the overall dimensions and strength of the pipe, making them essential for proper pipe specification and installation.

Stainless steel is used on condenser tubes to avoid copper and zinc discharge to the lake. This is because stainless steel is highly resistant to corrosion, making it a suitable material for applications where contact with water or other corrosive substances is involved. By using stainless steel, the risk of copper and zinc discharge into the lake is minimized, ensuring environmental protection and compliance with regulations.

Schedule No.80 is referred to as "extra strong". No. 160 is referred to as "double extra strong".

Schedule No.40 is the "standard".

The two most common tubing materials in our units are stainless steel and copper. Stainless steel is a popular choice due to its durability, corrosion resistance, and high temperature resistance. It is commonly used in applications where strength and longevity are important. Copper is another commonly used material due to its excellent heat transfer properties and corrosion resistance. It is often used in plumbing and HVAC systems.

Nominal pipe size refers to the standardized size designation of pipes, which is based on the internal diameter (ID) of the pipe. It is a convenient way to identify and classify pipes for various applications. The answer "None of the above" is correct because it indicates that nominal pipe size is not determined by the ID, OD, or wall thickness of the pipe, but rather by a standardized size designation system.

The joint consists of two flanges, each welded to a pipe and a gasket put in between them. The two flanges are bolted together with the gasket to seal the joint.

Victaulic fittings/couplings use a flexible shaped gasket to seal the pipe joint. The gasket is made of a flexible material that can conform to the shape of the joint, creating a tight and secure seal. This type of fitting is commonly used in piping systems where there is a need for flexibility and movement, such as in HVAC systems or fire protection systems. The Victaulic fitting's design allows for easy installation and maintenance, making it a popular choice in various industries.

Swagelok fittings/couplings use two ferrules in series to seal the joint. The two ferrules, known as the front ferrule and the back ferrule, work together to create a reliable and leak-tight connection. The front ferrule forms a seal against the fitting body, while the back ferrule provides support and ensures proper alignment. When the fitting is tightened, the two ferrules compress onto the tubing, creating a strong and secure joint. This design allows Swagelok fittings to provide excellent sealing performance in various high-pressure and high-temperature applications.

PVC or ABS is actually commonly used in sewage systems. However in the nuclear plant cast iron is a much better substitute for the following reasons:
-Longevity
-Strength
-Non-combustible (prevents the spread of fire!)

Dismountable tube fittings can be grouped into three major groups, flare, compression, and ferrule. A ferrule is a small, usually metal, ring or cap used to form a seal or connection between two parts. In the context of tube fittings, a ferrule is used to provide a secure and leak-proof connection between the tube and the fitting. It is typically made of materials like brass or stainless steel and is designed to grip the tube tightly when compressed, ensuring a reliable connection.

The tube is specified by its Outer Diameter (OD) and wall thickness. These two parameters determine the size and strength of the tube. The OD refers to the outer measurement of the tube, while the wall thickness indicates the thickness of the tube's walls. Together, these specifications provide important information about the tube's dimensions and suitability for various applications.

The victaulic coupling has the process fluid pushing the gasked against the pipe. As a result, higher pressure of the process system results in the higher sealing pressure.