What should be avoided while a tank is under pressure?

When a tank is under pressure, special precautions are necessary to ensure safety and integrity. Tank ends and man-ways should be avoided during pressurized conditions because these areas are critical points where the pressure is contained. Opening these points while the tank is under pressure can lead to dangerous situations, including the risk of explosive decompression, gas release, or injury to personnel.

In contrast, while leaking valves are indeed problematic, they are not something that can or should be 'avoided' in the same way as interacting with tank ends and man-ways. Measuring temperature can be a critical part of monitoring tank conditions while under pressure, provided it is done safely. Similarly, visual inspections may be conducted with appropriate safety measures, though caution is always necessary to prevent accidents.

Thus, the focus on avoiding tank ends and man-ways directly relates to preventing unsafe conditions associated with pressure release and ensuring personnel safety.