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VOLUME I (KTPS-V Stage) :
UNIT OPERATING PROCEDURE
Boile !e"#i$tio%:Natural circulation,
Single drum,
Radiant reheat,
Balanced draft boiler with
Tangential tilt type burners.
Remote controlled HEA High Energy Arc! igniters, air cooled oil
guns.
"SSS # "urnace safeguard super$isory systemRAH # Regenerati$e
Air Heater % & Nos.
"' fans # & Nos A(ial reaction
)A fans # & Nos A(ial reaction
*' fans # & Nos Radial 'ouble Suction
ES)s # + Nos.
DO":
A) Pe$aatio% o& lig'ti%g $:
. -hec and remo$e any foreign material from boiler. Ensure
all
manholes and others should be closed.
&. Remo$e any restriction obstructing the boiler
e(pansion.
/. Ensure "urnace hopper water sealing.
+. Ensure a$ailability of compressed air, power, chemicals,
cooling
water etc.
0. 1eep all $ents and drains as per the $al$e operating
diagram.
2. Burner tilt in hori3ontal position.4. Ensure 5il system and
firing e6uipment is ready.
7. Ensure all interlocs and protections.
8. -hec up the wind bo( for proper damper positioning.
9. -hec the functioning of all instruments.
. 1eep all dampers in air : ;as side in start up condition.
&. -hec the correct functioning of furnace probe.
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/. -hec all the e6uipments are properly lubricated and ept ready
for
start up.
+. "ill the boiler up to normal le$el.
0. -lose all de%super heating control $al$es.
B) I%itial ii%g:
. -hec that no boiler trip condition e(ists.
&. Air flow is ust the au( air or total air flow.4. -hec for
rotation of burners for uniform heating.
7. -hec the e(pansion of furnace and record it.
8. "iring rate should be with in limits.
9. ?aintain the drum le$el nearer to normal.
. -hec and control Boiler water, "eed water and steam conditions
as
per the recommended.
&. "re6uent soot blowing of RAHs.
/. )ut S-A)H Steam coiled air )re%heater! into ser$ice during
fuel oil
firing.
C) No*al Loa!i%g:
. *ncrease the boiler load as per start up cur$e.
&. Start coal firing if sufficient ignition energy is
a$ailable.
/. )ut all automatics in ser$ice.
+. -hec and record SH : RH metal temp.
0. ?aintain windbo( pressures e6ual on all sides.
2. Ensure the following#
a! "lue gas analysisb! @uality of "eed water, Boiler water :
Steam
c! )ul$erised coal fineness.
4. "re6uent soot blowing of RAHs to a$oid fire.
7. 1eep S-A)H into ser$ice upto the recommended cold end temps
are
reached.
&
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D) No*al Re!#tio% o& Loa!:
. Reduce the load as per the recommendations.
&. Ad>ust the 'ESH spray.
/. Tae the controls into manual where e$er re6uired for better
control.
E) No*al "'t !o+% to #ol!:
. Reduce the load gradually.
&. ?aintain normal drum le$el.
/. Enough purging after tripping the fuel.
+. "ill drum to 09mm during bo(ing up.
0. -hec and maintain drum le$el till it cools sufficiently.
2. Run *' : "' fans : RAH till the inlet "; temp drops down
to
&999-.
DON,T":
A) I%itial ii%g:
. 'o not continue firing if drum le$el is $ery low.
&. "urnace 5C temp should not be more than 0+99- if there is
no flow
in RH./. 'o not light up or continue if RAH is not running.
+. 'o not eep furnace probe inside the furnace if ".; temp
e(ceeds
0+99-.
B) No*al Loa!i%g:
. 'o not put mill into ser$ice until sufficient ignition energy
is
a$ailable.
&. 'o not operate at higher )r. : Temp.
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COLD START UP
. Air flow is
