NEED OF TSESTEADY STATE NO CHANGE IN TEMP STARTUP,S/D,LOAD SWINGS - OPERATION WITH UTMOST CARE

NEED OF TSEFREE THERMAL EXPANSION - ALLOWED IN THE DESIGN FOR NORMAL OPERATION

CONSTRAINED THERMAL EXPANSION - THERMAL STRESSING OF COMPONENTS NOT ALLOWED

TSEADMISSION 2 CHANNELS HP SV &CV

TURBINE 3 CHANNELS HPS ,HPC ,IPS

TSEHPSV ( L ) - MEASURING POINTS I & m DUAL THERMO COUPLE

HPCV ( L ) - MEASURING POINTS I & mDUAL THERMO COUPLE

TSE I - INNER TEMP 100% depth m -MEAN INTEGRAL TEMP

AVERAGE TEMP IN THE REST OF THE MATERIALMEASURED AT 50 % THICKNESS OF THE MATERIAL

TSEHP SHAFT - NO DIRECT MEASUREMENT

SIMILAR AREA IS MEASURED

FOR ANY ROTATING ELEMENT , IDENTICAL STEAM TEMP , IDENTICAL CHANGE IN STEAM TEMP , IDENTICAL COOLING DOWN BEHAVIOUR IDENTICAL HEAT TRANSFER CHARACTERISTIC

TSEFOR HP SHAFT

m -COMPUTED VALUE

I - AT ADMISSION PIPE ( LEFT )

TSEHP CASING - TOP OF ADMISSION ( R )

DUAL THERMO COUPLE

TSETSEFOR IP SHAFT

I - AT IP INNER CASING ( 3 ELEMENT )

m -COMPUTED VALUE

TSEMS TEMP BEFORE STRAINER ( L )HRH TEMP BEFORE STRAINER ( L ) HP STOP VALVE I HP STOP VALVE m HP CONTROL VALVE I HP CONTROL VALVE m

TSEHP SHAFT I HP SHAFT m HP CASING I HP CASING m IP SHAFT I IP SHAFT m

TSE MARGIN30 k - UPPER MARGIN

MAX RATE OF LOADING - 25 MW/min

0 k - MARGIN LRL O/P IS FROZEN

- 30 k - MARGIN O/P OF LRL IS DECREASED AT A RATE OF 25 MW /min

TSE MARGINSPEED LOOP TSE INFLUENCES RATE OF CHANGE OF SPEED SET POINT THROUGH SPEED REF LIMITER BASED ON UPPER MARGIN

TSE MARGINLOAD CONTROL TSE CHANGES RATE OF LOADING / UNLOADING ACCORDING TO AVILABLE UPPER MARGIN / LOWER MARGIN

TSE MARGINPRESSURE LOOP & MHGINFLUENCE OF TSE CAN NOT BE THERETSE GUIDES THE OPERATING ENGINEER THROUGH DISPLAY