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Report on
INDUSTRIAL TRAINING
at
NTPC Ltd,
SIMHADRI TPP, VISAKHAPATNAM,
ANDHRA PRADESH.
By
D. SASI TEJA (07985 A0 203)
G. RAVI KUMAR (06981 A0 226)
Under the guidance of
Sri B.Bala Krishna, Superintend (EM), NTPC Ltd, Simhadri.
BACHELOR O TECH!OLOG"I!
ELECTRICAL # ELECTRO!ICS E!GI!EERI!G
D$%&'$* +, E-$'/&- #E-$'+*/ E*/*$$'/*
RAGHU ENGINEERING COLLEGED&&&''/ V/&4&%&*&.
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CERTIFICATE
This is to certify that the mini project report entitled
INDUSTRIAL TRAINING
was carried out by Mr.D.Sasi TejaRegd. No. 07985 A0 203in
partial fulfillment to the award of degree in B.Tech in Electrical &
Electronics engineering during the academic year 2!"2# from
$ thjune %# to #thjuly%# in NT' (imhadri.
Sri B. Bala Krishna Prof. P.S Rao
Superintend (EM), Head of the Department,
Simhadri NTC !TD, EEE Department,
"i#a$hapatnam% Ra&hu En&&% Co''e&e,
% "i#a$hapatnam%
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ACKNOWLEDGEENT
We ou'd 'i$e to e*pre## our profound appre+iation to our &uide
r.B.BalaKrishna, Superintend (EM) for e*tendin& the offi+ia' #upport for the
pro&ram of the proe+t%
Our #in+ere than$# to r. P. APPA RAO! Senior A##t% En&ineer "E'e+tri+a'
Maintenan+e), NTC Simhadri for hi# -a'ua.'e &uidan+e and time'/ #u&&e#tion# and
modifi+ation in fina'i0in& the proe+t or$ and a'#o en+oura&in& at e-er/ #tep
We a'#o e*pre## our than$# to Prof. P.S.Rao! Head of E'e+tri+a' and
E'e+troni+# En&ineerin& Department ho had &i-en #u&&e#tion# and moti-ation
toard# our proe+t%
At 'a#t e +on-e/ our than$# to one and a'' that e*tend their he'p dire+t'/ or
indire+t'/ to +omp'etion of our proe+t in time%
PRO#ECT ASSOCIATES
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INTRODUCTION
$.$ THE EERGING NEW %ORCE ON INDIAS POWER HORI&ON
SETTING A NEW BENCHARK
Simhadri Therma' oer roe+t +ome# a'i-e on the poer map of the +ountr/
ith the #/n+hroni0ation of the fir#t 233MW 4nit% Ra+in& a&ain#t time in proe+t
imp'ementation, the Simhadri Therma' oer roe+t ha# #et a ne .en+hmar$ for
&reen5fie'd proe+t of thi# #i0e and earned the di#tin+tion of .ein& the on'/ poer
proe+t of thi# #i0e and earned the di#tin+tion of .ein& the on'/ poer proe+t in the
+ountr/ to +ommi##ion the 233MW unit in a re+ord time of 16 month# from the date of
main p'ant order, a feat that i'' pro.a.'/ remain un#urpa##ed% Spread o-er an area of
1,178 a+re# near ara-ada in "i#a$hapatnam Di#tri+t of Andhra rade#h, the 9333MW
Simhadri Therma' oer roe+t ha# to unit# of 233MW +apa+it/ ea+h% The entire
poer &enerated from thi# #tation i'' .e #upp'ied to Andhra rade#h% The er#thi'e
Andhra rade#h State E'e+tri+it/ :oard had #i&ned a oer ur+ha#e A&reement ithNTC on ;e.ruar/ 8, 966 Another 9333MW ( * 233) under +on#tru+tion%
$.' UNI(UE %EATURES
SIHADRI THERAL POWER PRO#ECT HAS AN) %IRSTS
The Simhadri oer roe+t i# the fir#t +oa#ta' +oa' fired therma' poer
proe+t of NTC%
The .i&&e#t inta$e e'' in the +ountr/ ha# .een in#ta''ed in#ide the :a/ of
:en&a' to dra #ea ater for u#e in CW #/#tem a# ma$e up ater%
To natura' draft +oo'in& toer# of 9?2 metre hei&ht ea+h are the .i&&e#t in
A#ia and #i*th .i&&e#t in or'd%
;ir#t +oa' @ .a#ed proe+t of NTC from hi+h entire poer i# a''o+ated to
the home #tate i%e% Andhra rade#h%
Simhadri proe+t ha# +reated a ne .en+hmar$ of e*+e''en+e ./+ommi##ionin& the 233MW 4nit in 16 month#%
Simhadri Therma' oer roe+t a+hie-ed the .oi'er 'i&ht up of 233MW 4nit
in 129 month#, hi+h i# a nationa' re+ord%
The mo#t modern proe+t in India ha-in& the #tate of the art +ontro' and
in#trumentation #/#tem%
$.* PRO#ECT LOCATION
WHERE PAST GLOR) TURNS INTO A POWER%UL %UTURE
ara-ada manda' in "i#a$hapatnam Di#tri+t ha# the pride of .ein& the 'o+ation
for Simhadri Therma' oer roe+t% The proe+t i# appro*imate'/ 83$m from
"i#a$hapatnam Cit/ and i# approa+ha.'e ./ NH 52 -ia E'aman+hi'i5"i#a$hapatnam
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road and further from ara-ada to "ada+heepurupa''i ./ road% The neare#t rai'a/
#tation i# Du--ada on the Horah5Chennai main 'ine%
$.+ GENESIS
DOWN EOR) LANE
The roe+t name BSimhadri +ome# from Simha+ha'am, the hi'' top temp'e of
!ord "araha !a$#hminara#imha Sam/, hi+h i# 9?$m from "i#a$hapatnam% The
proe+t a# ori&ina''/ +on+ei-ed ./ the er#thi'e Andhra rade#h State E'e+tri+it/
:oard, hi+h #u.mitted a fea#i.i'it/ report to the CEA in Mar+h 9668% Su.#e=uent'/,
the Go-ernment of Andhra rade#h entru#ted the proe+t to NTC% After +omp'etin&
the topo&raphi+a' #ur-e/, &eo5te+hni+a' in-e#ti&ation, demo&raph/ and #o+io5
e+onomi+ #ur-e/#, NTC o.tained te+hno5e+onomi+ +'earan+e from the CEA in
Septem.er 966?% The u.'i+ In-e#tment :oard of Go-ernment of India &a-e it#appro-a' in ;e.ruar/ 966
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ater% A
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or$in& and one #tand./) to meet the ma$e up ater re=uirement for 233MW
unit# ha-e .een in#ta''ed% Thi# i# the .i&&e#t inta$e e'' in the +ountr/, hi+h i#
+on#tru+ted u#in& the uni=ue Cai#ion We'' #in$in& te+hno'o&/% A
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1.11 PROJECT PROFILE (STAGE-1)
Appro-ed +apa+it/ > 9333MW (233MW)
!o+ation > araada Manda', "i#a$hapatnam, A%%
roe+t +o#t > R# 1,?23% :IC !oan and interna' re#our+e#%
;ue' Re=uirement > 2%38 Mi''ion Tonne# of +oa' per annum
Mode of Tran#portation > :/ rai'
Seet Water Re=uirement > ?33 +u.i+ metre# per hour
Sour+e > Fe'eru
Sea ater Re=uirement > 6,933 +u.i+ metre# per hour
Sour+e > :a/ of :en&a'
Main 'ant Turn$e/ pa+$a&e > Aarded to :HE! on No-em.er 1rd, 9667%
E-a+uation > Throu&h 833$- #/#tem of ATRANSCO
833$- Dou.'e +ir+uit "i0a&5"ema&iri5Nunna 'ine% 833$- Dou.'e +ir+uit "i0a&5hammam 'ine
833$- Dou.'e +ir+uit hammam5H/dera.ad%
833$- Dou.'e +ir+uit "i0a&5Gaua$a(GCI!)
!ine%
Commi##ionin& S+hedu'e > 233MW unit59 Mar+h 33 S/n+hroni#ed on
;e.ruar/ , 33 ahead of #+hedu'e%
> 233MW unit599 @De+em.er 33
:enefi+iar/ State > Andhra rade#h%
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$.$' EH/ S5s6e7 8 +44K/ SWITCH)ARD AT SIHADRI
Sit+h /ard i# one and ha'f .rea$er arran&ement #/#tem% 1 .a/# (to main
.a/# and one tie .a/) ere u#ed for +ir+uit#% E*i#tin& #it+h/ard i# ha-in& four
out&oin& 'ine#, to &enerator +ir+uit# and one #tand./ tran#former +ir+uit% Ea+h .a/
ha-in& i#o'ator#, Earth #it+he# CT# and .rea$er% To #et# of #o'id .u#5.ar# u#ed and
Capa+iti-e "o'ta&e Tran#former# and Sur&e Arre#ter# +onne+ted to .u#%
I#o'ator# are +entre .rea$ i#o'ator# (identified a# 76), +ir+uit .rea$er# are S;?
dou.'e .rea$ ith h/drau'i+ operation (identified a# 2), Current tran#former# (CT)
ha-in& 2 #e+ondar/ +ore# ith 9A ratin& and Capa+iti-e "o'ta&e Tran#former# (C"T)
1 #e+ondar/ +ore# ith 993"% The .a/# are identified it num.er# a#
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AIN PLANT
'.$ BOILER
Manufacturer @ :HE!, Type - Contro''ed Cir+u'ation With Rif'ed, Tu.in&, Dr/5:ottom,
Radiant Reheat, Sin&'e Drum, Top Supported, :a'an+ed Draft ;urna+e% T/pe of
;irin& 5 Ti'tin& Tan&entia'% arts of boiler)E+onomi0er, Water a''#, :oi'er
drum, Super heater#, Re5heater#, ;urna+e%
'.$$ Boiler A9:iliaries
(9) :oi'er Water Cir+u'atin& ump() Coa' ;irin& (1)Coa' ipin& :urner# (8) Oi' ;irin&(2) Sea' Air ;an(?) ID ;an (
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'.- GENERATOR
Manufa+turer> :HARAT HEA"F E!ECTRICA!S !TD
Capa+it/> MW 233, %;% 3%72 !AG, "A 277,333 H0 23 T/pe> TG5HW532335
Stator "o't# 9333, Amp# 9?33, Coo'ant H Water
R%%M 1333, In#u'% C'a## ;, ha#e 1, Conn% FF
Ga# re##ure 1%2 :ar
Spe+% IEC518
Rotor> Amp# 8383, "o't# 183, Coo'ant H
'.-$ De6ails of ,44W Genera6or
The to5po'e &enerator u#e# dire+t ater +oo'in& for the #tator indin&, pha#e
+onne+tor# and .u#hin and dire+t h/dro&en +oo'in& for the rotor indin&% The 'o##e# in the
remainin& &enerator +omponent#, #u+h a# iron 'o##e#, inda&e 'o##e# and #tra/ 'o##e#, are
a'#o di##ipated throu&h h/dro&en%
The &enerator frame i# pre##ure5re#i#tant and &a#ti&ht and e=uipped ith one #tator
end #hie'd on ea+h #ide% The h/dro&en +oo'er# are arran&ed -erti+a''/ in#ide the tur.ine end#tator end #hie'd%
The &enerator +on#i#t# of the fo''oin& +omponent#>
K Stator> Stator frame, End #hie'd#% Stator +ore, Stator indin&, H/dro&en +oo'er#
K Rotor> Rotor #haft, Rotor indin&, Rotor retainin& rin, ;ie'd +onne+tion#, K :earin
Shaft #ea'#
The fo''oin& additiona' au*i'iarie# are there for &enerator operation>
K Oi' #/#tem K Ga# #/#tem K rimar/ ater #/#tem K E*+itation #/#tem
'.-' Po=er Cir>9i6 De6ails of ,44W Genera6or?$
The &enerated poer at 9$" +onne+ted to Generator Tran#former (GT, 1 * 33MW,983$", De'taStar, O;A;) and a'#o taped to to num.er# of 4nit Tran#former# (identified
a# 9:A5T39 9::5T39 of 23M"A, 999%2$", Star5Star) to +ater the need# of au*i'iarie# of
the parti+u'ar unit throu&h Generator Cir+uit :rea$er (GC:)% 833$" of GT59 +onne+ted to
Grid throu&h of 833$" Sit+h/ard, Simhadri a# #hon.a/ no%6 in ;i&%
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HT SITCHGEARS
*.$ De6ails of HT S=i6>h@ears in NTPC Si7hari.
9% There are three 'e-e'# of HT -o'ta&e# u#ed in the Simhadri therma' poer p'ant apart
from the &eneratin& -o'ta&e 9"% The/ are> (9) 11" () 99" and (1) 1%1"%99$" #/#tem u#ed for di#tri.ution and #upp'/ of #ome H" au*i'iar/ e=uipment# of
.oi'er tur.ine% 1%1$" u#ed for on'/ #upp'/ of H" au*i'iar/ e=uipment# of .oi'er,
tur.ine and off5#ite area#% 11$" #/#tem u#ed for tran#mi##ion of poer to Seet ater
#/#tem, Sea ater #/#tem and Ton#hip%
% **K/ Sit+h&ear# of "o'ta# ma$e or$in& at Mi#+e''aneou# Ser-i+e Sit+h&ear,
Seet ater, Sea ater, a#h ater and re5+ir+u'ation #it+h&ear#% ;i&%
1% $$K/Sit+h&ear# of :HE!ma$e or$in& at 4nit59> O:A, 9:A, 9:: and 4nit5>
:A, :: and Siemen# ma$e at Sea Water #/#tem% ;i&%
8% *.*K/Sit+h&ear# of :HE! ma$e or$in& at 4nit59> 9CA 4nit5> CA,
A#h hand'in&> OCA and A:: ma$e at Coa' Hand'in& 'ant (CH) ;i&%
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INTRODUCTION
NTCS #uper'ati-e #a&a of poer, Simhadri Therma' oer roe+t +ome#a'i-e on the poer map of the +ountr/ ith the #/n+hroni0ation of the fir#t 233MW
4nit% Ra+in& a&ain#t
time in proe+timp'ementation, the
Simhadri Therma'
oer roe+t ha# #et
a ne .en+hmar$ for
&reen5fie'd proe+t of
thi# #i0e and earned
the di#tin+tion of
.ein& the on'/ poer
proe+t of thi# #i0e in
the +ountr/ to+ommi##ion the
233MW unit in a
re+ord time of 16
month# from the date
of main p'ant order, a
feat that i'' pro.a.'/
remain un#urpa##ed%Spread o-er an area of
1,178 a+re# near ara-ada in "i#a$hapatnam Di#tri+t of Andhra rade#h, the
9333MW Simhadri Therma' oer roe+t ha# to unit# of 233MW +apa+it/ ea+h to+ater the poer re=uirement of A #tate e*+'u#i-e'/ in the /ear 9667%
The entire poer &enerated from thi# #tation i'' .e #upp'ied to Andhra
rade#h% In thi# re&ard the er#thi'e Andhra rade#h State E'e+tri+it/ :oard had
#i&ned a oer ur+ha#e A&reement ith NTC on ;e.ruar/ 8 966
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;ir#t +oa' @ .a#ed proe+t of NTC from hi+h entire poer i# a''o+ated to the
home #tate i%e% Andhra rade#h%
The .i&&e#t inta$e e'' in the +ountr/ ha# .een in#ta''ed in#ide the :a/ of :en&a'
to dra #ea ater for of +onden#er +oo'in& and a#h di#po#a'
To natura' draft +oo'in& toer# of 9?2 metre hei&ht ea+h are the .i&&e#t in A#ia
and #i*th .i&&e#t in or'd
4#e of Monitor# and !ar&e "ideo S+reen#(!"S) a# Man Ma+hine
Interfa+e(MMI#) for operatin& the p'ant
The mo#t modern proe+t in India ha-in& the #tate of the art +ontro' and
in#trumentation #/#tem
4#e of nitro&en a# fire prote+tion #/#tem for the fir#t time in NTC
4#e of f'/ a#h .ri+$# in +on#tru+tion of a'' .ui'din
Project Profile:
Appro-ed Capa+it/ > 9333 MW ( J 233 MW)
!o+ation > ARA"ADA MANDA!, "ISAHAATNAM
DIST% A
;ue' Sour+e > MAHANANDI COA! ;IE!DS,
TA!CHER,
ORISSA
Appro-ed roe+t Co#t > R# 1?23% :IC !oan and Interna' Re#our+e#
;ue' Re=uirement > 2%38 MI!!ION TONNES ER ANN4M
DM Water Sour+e > WATER ;ROM FE!!4R4 CANA!
Seet Water Re=uirement > ?333 M1Hr
Coo'in& Water Sour+e > SEA WATER ;ROM :AF O; :ENGA!
CW Re=uirement > 6933 M1Hr
Main Contra+tor > MS :HE!
oer E-a+uation > A TRANSCO ("ia a'pa$a):enefi+iar/ State > ANDHRA RADESH
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Converion of C!e"ic#l Ener$% to Electric#l Ener$%&
Initia''/ the +oa' i# .rou&ht throu&h rai'a/ a&on# from Ta'+her Coa' ;ie'd#
and i# un'oaded at the Tra+$
Hopper in the +oa' hand'in& p'ant
here the add'e ;eeder hi+h
feed# the +oa' onto the +on-e/or
.e't% The +on-e/or .e't ta$e# the
+oa' throu&h meta' dete+tor# and
ma&neti+ #eparator# and to remo-e
an/ unanted materia' in the +oa'%
The +oa' then +ru#hed in the
+ru#her# to the #i0e of 3mm%
;rom there, the +oa' i# fed to the
+oa' .un$er# at the .oi'er#% There
are 97 #et# of +oa' .un$er# (Nine for ea+h .oi'er)%
;rom the .un$er#, +oa' i# pa##ed into +oa' mi''#, hi+h i# pu'-eri0ed +oa' i#
made into fine poer% ;rom here, +oa' i# mi*ed ith air and i# for+ed into the .oi'er
from four #ide# ith the he'p of for+ed drau&ht fan#% In#ide the :oi'er, the +oa' i#
fired and a .a'' of fire i# formed% Thi# i# a ater tu.e .oi'er #o de5minera'i0ed ater
f'o# throu&h e+onomi0er, .oi'er drum and &oe# to .ottom rin& header and there it i#
di-ided to a'' the four #ide# throu&h tu.e# in#ide the .oi'er to the furna+e and heat i#
tran#ferred +on-ertin& ater into #team% Thi# #team and ater mi*ture i# a&ain ta$en
to the .oi'er drum here the #team i# #eparated and pa##ed throu&h #uper heater and i#
fir#t pa##ed throu&h H Tur.ine and then after re5heatin&, it i# pa##ed throu&h I
Tur.ine and then ! Tur.ine% Water fo''o# the #ame path% A'' the tur.ine# are
mounted on the #ame #haft and are me+hani+a''/ +oup'ed to the &enerator% The
&enerator +on-ert# the me+hani+a' ener&/ to e'e+tri+it/%
The #team after pa##in& the ! Tur.ine i# fed to +onden#er here it i#
+onden#ed u#in& the #ea ater% The +onden#ate i# #tored in the Conden#ate Stora&e
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Tan$% The +onden#ed ater i# pa##ed throu&h e+onomi0er and fina''/ fed to the
.oi'er% The #ea ater i# u#ed for the +oo'in& purpo#e in +oo'in& toer#%
;'ue &a#e# from the furna+e are e*tra+ted ./ indu+ed draft fan% The f'ue &a#e#
emit their heat ener&/ to -ariou# #uper heater, air preheater#, and e+onomi0er and
fina''/ pa## throu&h the ES here the a#h parti+'e# are +o''e+ted and mi*ed ith
ater to form #'urr/ and i# pumped to a#h pond%
Thi# i# the pro+e## of +on-er#ion of therma' ener&/ into E'e+tri+a' Ener&/,
hi+h i# underta$en at NTC5Simhadri
The ho'e pro+e## of produ+tion of poer i# +'a##ified into>
9% Coa' Hand'in&
% Steam Generation
1% C/+'e#
8% Tur.o Generator
2% A#h Hand'in&
?% Tran#mi##ion
COAL HANDLIN'
Coa' Hand'in& Department o++upie# the maorit/ area at NTC%It# dut/ i# to
+o''e+t the +oa' from a&on# and de'i-er to the :oi'er #e+tion% The maor #upp'/ of
+oa' to the p'ant i# from Ta'+ her and I: "a''e/ +oa' mine# in Ori##a% Coa' i# a'#o
imported from Indone#ia a# and hen re=uired% The a-era&e +on#umption of +oa' i#
173 tone# per hr% per .oi'er of 233MW i%e%, appro*imate'/ 693 tone# per da/ per
.oi'er%
There are man/ au*i'iarie#, the/ are>
A% Tra+$ Hopper
:% add'e ;eeder
C% Meta' Dete+tor#
D% In5'ine Ma&neti+ Separator#(I!MS)
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E% Cru#her#
;% Sta+$er Re+'aimer
G% Tran#fer oint#
A% Tr#c( Ho))er& Tra+$ Hopper i# u#ed to +o''e+t +oa' from the Rai'a/
Wa&on# here% Here the
a&on# +ome dire+t'/ on to
the Tra+$ Hopper and the
+oa' i# +o''e+ted in the
hopper ./ openin& the
.ottom door# of the
a&on# ./ -a+uum re'ea#e
#/#tem% Thi# i# a -er/
effi+ient and redu+e# manpoer%
:% P#**le Fee*er&add'e ;eeder# are u#ed to 'oad the +oa' +o''e+ted in the
Tra+$ Hopper on the +on-e/or .e't% Thi# feeder +ontain# a rotatin& padd'e hee'
hi+h ./ rotatin& pu#he# the +oa' onto the .e't% Thi# i# a rotator/ rai' mounted
t/pe feeder ith a hee' diameter of 1% meter#% There are a tota' of 8 feeder#
ha-in& a tota' +apa+it/ of 933 THour.
C% Met#l Detector&The/ are u#ed to dete+t an/ meta' #u.#tan+e# in the +oa'
that i# +arried ./ the +on-e/or .e't% The/ are e'e+troni+ +oi' t/pe dete+tor# and
the/ dete+t ferrou# and non5ferrou# materia'#% There are a tota' of 8 dete+tor#%
D% In Line M#$netic Se)#r#tor +ILMS,& Thi# i# u#ed to #eparate an/
meta' #u.#tan+e pre#ent in the +oa'% There a tota' of 8 ma&neti+ #eparator#%
E% Cr-!er&The +ru#her# are a'#o +a''ed Rin& Granu'ator#% The/ are u#ed to
+ru#h the +oa' hi+h i# of irre&u'ar #i0e# to a #tandard #i0e i%e% the +oa' of 23mm
ran&e #i0e i# +ru#hed into 3mm#i0e% There are 8 +ru#her# of 9333 THour
+apa+it/% oer +on#umed i# a.out 2?3 W%There i# a rin& hammer of
dimen#ion# 983 * 6 * 113 mm made of Mn #tee'%
3
8/13/2019 Overall Proj
21/23
HIGH TENSION SWITCHGEAR
;% St#c(er Recl#i"er& The/ are u#ed hen it i# ne+e##ar/ to 'oad the +oa'
onto the +on-e/or dire+t'/ from the +oa' depo#it#% Thi# +on#i#t# of hu&e rotatin&
.u+$et t/pe hee' hi+h i# rotated ./ u#in& #=uirre' +a&e motor#% The/ are
unidire+tiona'% Ea+h #ta+$er ha# 7 .u+$et# ith a hee' diameter of
8/13/2019 Overall Proj
22/23
HIGH TENSION SWITCHGEAR
STEAM 'ENERATION
Steam &eneration +on#i#t# of the fo''oin& +omponent# a# fo''o# and it i#
.a#ed on Ran$ine +/+'e hi+h i# a'#o #hon .e'o%
R#n(ine C%cle&The fi& .e'o i# #e'f e*p'anator/ a# at ea+h and e-er/ point a'' are
mentioned%
A# the area under Ran$ine +/+'e in+rea#e# the or$ done in+rea#e# #o the
effi+ien+/ of the p'ant in+rea#e# .ut there i# a pra+ti+a' 'imit too
Criti+a' point i# rea+hed in +a#e of #uper +riti+a' .oi'er# here there i# no need
of drum for #team #eparation
8/13/2019 Overall Proj
23/23
HIGH TENSION SWITCHGEAR
In the fo''oin& #e+tion e i'' de#+ri.e the +omponent# in-o'-ed in the
produ+tion of #team main'/ :oi'er a# fo''o#%
A. /oiler &
A .oi'er i# a p'a+e here the heat produ+ed due to .urnin& of +oa' in the
furna+e i# u#ed to
+on-ert the feed ater
into #team% There are
different t/pe# of
.oi'er# that +an .e
u#ed dependin& on
the app'i+ation% In
NTC5 Simhadri,
there are to ater
tu.e .oi'er unit#
manufa+tured ./
:HE!%The/ furna+e
-o'ume i# a.out
9?88 C Meter# and
the temperature in#ide the .oi'er i# a.out 833LC%Water mu#t f'o throu&h the heat
a.#orption #urfa+e of the .oi'er in order that to .e e-aporated into #team% In drum t/pe
unit# the ater i# +ir+u'ated from the drum throu&h the &eneratin& +ir+uit# and .a+$ to
the drum throu&h don +omer# at a temperature #'i&ht'/ .e'o #aturation temperature%
The .oi'er i# di-ided into three 0one# name'/ Radiation 0one, +on-e+tion 0one and
+ondu+tion +on-e+tion 0one%
9% Radiation 0one > endent(;SH)
% +on-e+tion 0one > Reheater and 'atent #uper heater(;SH)
1% +ondu+tion +on-e+tion 0one > rimar/ #uper heater(!TSH)
E+onomi#er