What action must be taken for non-standard boilers at the initial inspection?

For non-standard boilers at the initial inspection, ultrasonic scanning is a critical action that must be taken. Ultrasonic scanning employs sound waves to detect internal flaws or material thickness deviations that could compromise the boiler's integrity. This method is particularly important for non-standard boilers, which may not adhere to traditional construction codes or standards, making it essential to assess their condition thoroughly and ensure they operate safely.

While visual inspection is an important first step in identifying obvious defects or visible deterioration, it does not provide the depth of analysis needed for internal issues that could lead to failures. Pressure testing is also essential in many scenarios, but it typically comes after the initial inspection has verified that the boiler is structurally sound. A fire safety audit is more related to operational safety protocols rather than the structural integrity of the boiler itself.

In conclusion, ultrasonic scanning provides a non-intrusive method to assess the internal condition of non-standard boilers at their initial inspection, ensuring that any hidden issues are identified to maintain safety and compliance.