Boiler reheater protection to avoid reheater tube starvation.

1. BOILER REHEATER PROTECTION
TO PREVENT REHEATER TUBES FROM STARVATION

2. HPBP 1
HPBP 2
HPT IPT LPT
Condenser
HOTWEL
LPBP 2
LPBP 1
REHEATER
MAIN STEAM REHEAT STEAM
HRH
CRH
HPSV 1 HPCV 1 IPCV 1
IPSV 1
HPSV 2 HPCV 2 IPCV 2
IPSV 2
CRH NRV

3. REHEATER PROTECTION ENABLING:-
A
N
D
REHEATER PROTECTION ENABLED
DRUM PRESSURE > 30KSC
ANY HPBP OPENS>2%
ANY LPBP STOP V/V AND
CORRESPODING C/V OPEN >2%
ANY FEEDER ON OR BOILER FIRING ON
No MFT

4. A
N
D
O
R
REHEATER PROTECTION ENABLED
TURBINE IP V/VS AND LPBP CLOSED
TURBINE HPV/VS AND HPBP CLOSED
A
N
D
O
R
GENERATOR CB OPEN
BOTH LPBP CLOSED
Both HPBP CLOSED
O
R
REHEATER PROTECTION LOSS
REHEATER PROTECTION LOSS

5. THANKS