Which area is NOT specifically noted for inspection for corrosion?

The area identified as not specifically noted for inspection for corrosion is internal pressure zones. This designation is correct because internal pressure zones typically experience conditions where the pressure within the piping system helps prevent external corrosion by inhibiting moisture ingress and providing an environment less conducive to corrosion.

In contrast, pipe supports, splash zones, and areas under insulation are more susceptible to corrosion due to their exposure to moisture, environmental elements, or inadequate drainage. Pipe supports can trap moisture which can lead to corrosion at the support points. Splash zones are areas where water exposure occurs, enhancing the potential for corrosion. Areas under insulation may trap moisture against the pipe surface, especially if the insulation is damaged or improperly installed.

Therefore, internal pressure zones do not typically require the same focus on corrosion inspection as these other areas that are more vulnerable to deterioration from moisture and environmental conditions.