Re-heater protection
Source : All governor valves closed, HP bypass valve < 2% open with
a. at least one feeder running from remote or
b. More than 8 out of 12 oil guns in operation
Implication: Damage to tubes that can result from firing in excess of safe limit which will cause overheating of re-heater tubes due to absence of a steam flow through it.
Action: MFT
MFT conditions