Clean Air Flow Test

8/18/2019 Clean Air Flow Test

1/13

PROCEDURE FOR CLEAN AIR FLOW TEST OF COAL PIPES

PROJECT:M/s RAMAGUNDAM

UNIT – 7 (500 MW )

BHARAT HEAVY ELECTRICALS LIMITED(A Government of India Undertaking

!o"er Se#tor $ So%t&ern Region'') Anna Sa*ai) +andanam) C&ennai $ ,-- -./0


2/13

!R12ECT M340 RAMAGU+DAM U+IT $ ) /-- M5

!R1CEDURE !R1CEDURE 61R CLEA+ AIR 6L15 TEST 16C1AL !I!ES

!UR!1SE 16D1CUME+T

61R E7ECUTI1+ 3 I+61RMATI1+

D1CUME+T +10 !S8TS789.8--8-.

COPY NO:

ISSUED TO:

-- :2 :!TM :B -'0-;0? Revie"ed >? A==roved >? Date

BHARAT HEAVY ELECTRICALS LIMITED(A Governen! o" In#$% Un#er!%&$n')

Poer Se!or – So*!+ern Re'$on,7,- Ann% S%.%$- N%n#%n%- C+enn%$ – /00 051


3/13

S!%!$on: NTPCRAMAGUNDAM

BHEL Ref No.PS-DC-202-500-0012

NTPC Ref no COS-COMM-RGM-Co!-PRO/011 S"ee# 1 of 10

P$%n# %&e%: BO'LER

PROCEDURE (OR CLEAN A'R (LO) TEST O( COAL P'PES

SLNO

210

310

10

,10

510

/10

710

410

10

2010

LIST OF CONTENTS

PLANT DETAILS

O6ECTI8E

PROPOSAL

SER8ICES RE9UIRED

SAFETY PERECAUTIONS

EMERGENCY PROCEDURE

STATE OF TE PLANT

METOD

COMPLETION CRITERIA

APPENDICES

LOG SEET


4/13




P$%n# %&e%: BO'LER


SL1NO

210

909

90<

90.

90'

PLANT DETAILS

T&ere are 9- (Ten mi**4 =rovided for ea#& Unit of /-- M5Ca=a#it?0 T&e4e mi**4 are of 7R! 9--. t?=e and are =rovided "it&individ%a* *%>@oi* 4?4tem0 T&e4e mi**4 are de4ignated a4

A)B)C)D)E)6)G)H) 2 and : "it& Unit +o0 a4 =refi0

T&ere are ' (fo%r #oa* =i=e4 emanating from ea#& mi** from mi**o%t*et =oint "it& individ%a* mi** di4#&arge va*ve (MDV and #oa*=i=e 4&%t@off gate near t&e #oa* >%mer a44em>*?0 T&e4e #oa*

=i=e4 are 4%>e#ted to #*ean air f*o" te4t to en4%re %niform f*o" ina** t&e #oa* =i=e40

T&e mi**4 are =re44%ried mi**4 "it& =rimar? air fan4 4%==*?ing t&eair f*o" and t&e &ead re%ired for over#oming mi**ing 4?4temre4i4tan#e0

To maintain t&e re%ired air f*o" t&ro%g& t&e mi**) a #ontro*4?4tem #om=ri4ing #o*d and &ot dam=er4 i4 =rovided) "&i#&mea4%re4 and #ontro*4 air f*o" to a 4=e#ified 4et =oint0

STATUS

S*!n%#+&es

NTPC BHEL


5/13



NTPC Ref no COS-COMM-RGM-Co!-PRO/011 S"ee# , of 10

P$%n# %&e%: BO'LER


SL1NO

90/

90,

Te#&ni#a* S=e#ifi#ation of Mi**4 and it4 *%>@oi* 4?4tem are given>e*o"0

7R! 9--. Mi**4

a0 T?=e 8 7R! 9-.

>0 Make +o0 8 BHEL F

#0 Ca=a#it? 8 ,,0. T!H

d0 Motor :5 8 /@oi* S?4tem

a0 !%m= Make3T?=e 8 A*ekton 3 S#re"

>0 Ca=a#it? 8 - L!M

#0 S=eed 8 F- R!M

d0 Re*ief Va*ve Setting 8 0- :SC

e0 Motor Rating 8 .0 :5

Sin#e) !rimar? Air 6an4 and mi**4 are avai*a>*e for t&i4 te4t) t&ere%ired =*ant item #om=*etion *i4t) for me#&ani#a*) E*e#tri#a* andC I to >e =re=ared at 4ite =rior to te4t0

STATUS

S*!n%#+&es

NTPC BHEL


6/13



NTPC Ref no COS-COMM-RGM-Co!-PRO/011 S"ee# of 10

P$%n# %&e%: BO'LER


SL1NO

310

10

.09

.0<

,10

'09

'0<

'0.

O6ECTI8E

C*ean Air f*o" te4t in mi**ing 4?4tem i4 #arried o%t toi0 #&e#k ve*o#it? variation >et"een t&e =%*veried #oa*

=i=e4 of a mi** i4 "it&in a**o"a>*e *imit and t&ere >? toen4%re t&at #orre#t 4ie orifi#e4 are in4ta**ed in #oa*=i=e4 for e%a*iing t&e Air f*o" and

ii0 t&ere i4 no foreign materia* =*%gged in4ide t&e=%*veri4ed #oa* =i=e40

PROPOSAL

C*ean Air f*o" te4t4 4&a** >e #ond%#ted in a** t&e mi**4 individ%a**?"it& Co*d Air0

T&e te4t "i** >e #ond%#ted >? r%nning =rimar? air fan and mi** andf*o" mea4%rement "i** >e taken at 4=e#ified *o#ation4( ref0 4 0 09- and en4%red t&at #om=*etion #riteria (Se#tion F0- i4a#&ieved >? =*a#ing re%ired 4ie4 of orifi#e =*ate4 in =0#0=i=e*ine40

+ote 8T&e #om=*ete re4=on4i>i*it? for #ond%#ting t&e te4t in a 4afe and4?4temati# manner fo**o"ing t&e a==roved =ro#ed%re a4 "e** a4making t&e 4?4tem read? are in t&e BHEL4 4#o=e0

SER8ICES RE9UIRED

Avai*a>i*it? of man =o"er "it& re%ired too*4 for attending to an?*eakage in t&e 4?4tem0

Avai*a>i*it? of o=erating =er4onna* to #oordinate t&e a#tivitie4

Avai*a>i*it? of *ig&ting arrangement4 and #omm%ni#ation in t&eo=erating f*oor0

STATUS

S*!n%#+&es

NTPC BHEL


7/13




P$%n# %&e%: BO'LER

PROCEDURE (OR CLEAN A'R (LO) TEST O( COAL P'PESSL1NO

'0'

'0/

'0,

'0

'0;

'0F

510

/09

/0<

/0.

/0'

/0/

/10

,09

Avai*a>i*it? of =orta>*e fire fig&ting e%i=ment near te4t area0

Avai*a>i*it? of a%i*iar? #oo*ing "ater for mi**4 fan40

Avai*a>i*it? of in4tr%ment air 4%==*?

Avai*a>i*it? of LT 4%==*?

Avai*a>i*it? of HT 4%==*?

!itot T%>e

SAFETY PRECAUTIONS

De>ri4 i4 and aro%nd mi**ing 4?4tem 4&a** >e removed0

A==roa#& 3 Stair#a4e 3 !*atform "&erever re%ired are madeavai*a>*e e4=e#ia**? near t&e =itot t%>e traver4ing *o#ation0

6ir4t aid kit avai*a>*e near te4t0

T&e te4t team 4&o%*d >e a"are of t&e =ro#ed%re ado=ted0

1t&er agen#ie4 "orking near t&e te4t area are informed 3 #*eareda4 =er re%irement0 SRCC "i** >e enfor#ed0

EMERGENCY PROCEDURE

T&e te4t team 4&o%*d >e a"are of t&e 4te=4 to >e taken to tri= t&e

r%nning e%i=ment in #a4e of an? emergen#? 3 a>norma*o>4ervation4 are notified to t&em0

STATUS

S*!n%#+&es

NTPC BHEL


8/13




P$%n# %&e%: BO'LER


SL1NO

,0<

,0.

710

09

0<

0.

0'

0/

0,

0

T&e te4t team 4&o%*d >e a"are of a#tion4 to >e taken in #a4e of in%r? to an? =er4onne*0

T&e te4t team 4&o%*d >e a"are of o=erating in4tr%#tion4 of =orta>*e fire eting%i4&er40

STATE OF TE PLANT

T&e tria* r%n of t&e mi** "&i#& i4 4e*e#ted for t&e te4t) i4 #om=*eted

and i4 read? for o=eration from remote in a** re4=e#t 0 T&e mi**ing4?4tem 4&o%*d >e #*ean and a** air *eakage =oint4 &ave >eenarre4ted0

Bot& 4et of ID) 6D !A fan i4 #ommi44ioned and read? for o=eration from remote a*ong "it& re4=e#tive air &eater4) gate dam=er40

T&e #orre4=onding ra" #oa* feeder i4 ere#ted and i4 >oed %==ro=ert? to avoid an? air e4#a=e from mi** t&ro%g& t&e4e feeder40

Mi** di4#&arge dam=er i4 #ommi44ioned and ke=t o=ened f%**?0

Mi** and Coa* =i=e4 4ea* air dam=er4 are #ommi44ioned and ke=tf%**? #*o4ed0

T&e Coa* !i=e4 i4o*ation gate near t&e >%rner end (in a** '#orner4 are ke=t o=ened f%**?0

T"o 4%ita>*e 4ie ta==ing =oint4 at F- degree4 a=art in t&e 4ame=*ane =rovided in t&e verti#a* 4traig&t =ortion of t&e a** t&e ' !0C0=i=ie4 of t&e mi**0 (Ta==ing =oint4 are =refera>*? *o#ated at a

di4tan#e of 9-@D and /@D a"a? from an? >end in t&e %=4treamand do"n 4tream re4=e#tive*?0 T&i4 i4 to 4%ita>*? de#ided at 4itegiving #on4ideration to a==roa#& to #oa* =i=e *a?@o%t and=er4onne* 4afet?0 D i4 t&e diameter of t&e #oa* =i=e

STATUS

S*!n%#+&es

NTPC BHEL


9/13




P$%n# %&e%: BO'LER


SL1NO

0;

0F

09-

099

09<

09.

09'

09/

410

;09

;0<

!ro=er a##e44 =*atform =rovided for taking =i*ot t%>e differentia*=re44%re mea4%rement0

!i*ot t%>e differentia* =re44%re ga%ge) T&ermometer (-@9-- Deg0C) =o*et&ene t%>e4 of 4%ffi#ient *engt&) are made avai*a>*e0

9- marking4 are made on t&e =i*ot t%>e at a di4tan#e4 of -0-'., R) -09./ R) -0*e0

T&e #*a44ifier a44em>*? i4 4ervi#ed t&oro%g&*? and a** t&e vane4are 4et %niform*? at de4ired =o4ition to fa#i*itate air f*o" re%iredfor #ond%#ting t&e te4t0

!itot T%>e to >e %4ed for #*ean air f*o" te4t i4 #a*i>rated one and

t&e #a*i>ration #ertifi#ate i4 avai*a>*e0

A** t&e re%ired in4tr%ment4 of ID) 6D and mi**ing 4?4tem4 are#ommi44ioned

METOD

Start ID) 6D !A fan4 a4 =er e%i=ment 1 M man%a*in4tr%#tion and e4ta>*i4& f%rna#e draft and air f*o" t&ro%g& t&e4e*e#ted mi**0

Under Mi** in off #ondition) 4tart 4ea* air fan and en4%re di4#&arge=re44%re more t&an t&e mi** in*et =re44%re >? 9-- mm "#*0 T&en4tart t&e mi** a4 =er 1 M man%a* in4tr%#tion and kee= it inr%nning #ondition0

STATUS

S*!n%#+&es

NTPC BHEL


10/13




P$%n# %&e%: BO'LER


SL1NO;0.

;0'

;0/

;0,

;0

;0;

;0F

;09-

Ba4ed on t&e de4ign air f*o" of t&e mi**) #a*#%*ate de*ta ! to >e 4et

a#ro44 mi** in*et air f*o" mea4%rement devi#e

Air f*o" t&ro%g& t&e mi** i4 in#rea4ed >? o=ening &ot 3#o*d air dam=er and *oading !A fan a##ording*?0

!A &eader =re44%re 4&a** >e maintained at /-@;-- mm@"#*0

Se*e#t a Coa* !i=e of average *engt&) and in4ert t&e =i*ot t%>e to t&e#enter of t&e =i=e and ad%4t t&e air f*o" to =rod%#e t&e #a*#%*ated=i*ot t%>e differentia* =re44%re (a==roimete*? 99-J f*o"

Re#ord mi** air tem=erat%re) mi** air f*o" indi#ation mi** differentia*=re44%re) !A &eader =re44%re at #ontro* room0 If #ontro* roomindi#ation4 are not avai*a>*e for #ertain =arameter) t&an 4%ita>*emea4%ring arrangement4 to >e made at *o#a*0 (If >ot& are avai*a>*e)#ro44 #&e#k *o#a* and remote reading4

Ve*o#it? =rofi*e in ea#& Coa* !i=e 4&a** >e o>tained >? traver4ing t&e=itot t%>e at t&e 4ame =*ane in t"o dire#tion4 (A and B) F-- a=art att&e #enter of e%a* area40 (S%gge4ted *o#ation4 i4 a4 given in4e#tion 009-

Convert t&e =i*ot t%>e differentia* =re44%re reading (ve*o#it? &eadinto air ve*o#it? in4ide t&e Coa* !i=e >? %4ing t&e form%*a

V K -0


11/13




P$%n# %&e%: BO'LER


SL1NO

;099

;09<

;09.

;09'

10

F09

J Ma0 deviation K Ma0Ve*o#it? @ Ave0Ve*o#it?

9-- Ave0 Ve*o#it?

J Minim%m deviation K Ave0Ve*o#it? $ Min0Ve*o#it? 9-- Average Ve*o#it?

Re#ord air tem=erat%re and f*o" differentia* a#ro44 t&e mi** in*etair mea4%ring devi#e0 T&e4e va*%e4 are to >e fre%ent*? #&e#kedand maintained t&ro%g&o%t t&e te4t 0

Re=eat t&e a>ove te4t for t&e remaining mi**4 0

In #a4e t&e deviation i4 not "it&in t&e a**o"a>*e *imit) 4ie4 of t&eorifi#e4 =*ate4 "i** >e ad%4ted and t&e te4t "i** >e re=eated ti**deviation i4 "it&in t&e *imit0

Determine t&e 5eig&t f*o" =er min%te t&ro%g& ea#& #oa* =i=e%4ing t&e e%ation8 Air f*o" (:g3min K ( D


12/13

S+ee! 20 o" 20

2010 LOG SEET

DATE:

PROECT :

UNIT :ACTI8ITY :

S0+o

Corner 9 Corner < Corner . Corner '

A B A B A B A B

& V & V & V & V & V & V & V & V

9

<

.

'

/,

;

F

9-

99

Ave0Ve*(m34e#

Air

6*o"(T3Hr

De4ign Air f*o" 8J of Dam=er o=ening

90 Air Tem=erat%re 8


13/13

PROCEDURE (OR CLEAN A'R (LO) TEST

O( COAL P'PES

Documents

Clean Air Flow Test