Final answer:
The appropriate test pressure for piping systems cannot be determined without specific reference to the applicable engineering codes or standards. Various factors such as material, design specifications, and safety requirements must be considered.
Step-by-step explanation:
The question deals with the test pressure required for piping systems before the attachment of system components. In engineering standards, there is a specification for minimum test pressures that must be applied to ensure the integrity of the system. However, the test pressure can vary depending on the materials involved, the design specifications, and the safety margins required by the engineering codes and standards. Therefore, without specific reference to a particular standard or code, it is not possible to provide a definitive answer to the question. Standards such as the ASME B31 Code for Pressure Piping provide guidelines for various types of systems and may dictate a certain test pressure based on system size, pressure class, and fluid service. Usually, test pressures are higher than the system's maximum operating pressure to ensure safety and reliability, but the exact value would need to be referenced from the relevant engineering codes or standards. If this is for a specific application, it is advisable to consult the relevant documentation or a professional engineer familiar with the system design and applicable standards.