What must be done to nonfactory tested, field erected equipment according to regulations?

Field-erected equipment that is not factory-tested is subject to specific requirements to ensure safety and functionality. Pressure testing is a critical step in this context because it verifies the integrity of the system and confirms that it can withstand the operational pressures it will encounter in service. This process helps to identify any leaks or weaknesses in the equipment that could lead to failures if left untested.

In the context of mechanical systems, ensuring that equipment can perform under expected conditions without risking failure is paramount. Regulations often stipulate that non-factory tested equipment undergo such rigorous evaluation as part of establishing a safe operational capacity. This aligns with broader safety standards designed to protect both personnel and equipment, thereby ensuring compliance with industry practices and local codes.

Although inspection, replacement, and monitoring are important aspects in different contexts, they do not specifically address the essential pressure testing requirement for ensuring the reliability and safety of untested, field-erected equipment.