Filed under: Uncategorized  — shivajichoudhury @ 5:23 am Tags: !"T#!$ %&'$!(!%&)
15.4 SP+CI,IC CO!"O# S%S!+- "+/I"+-+!S
*5+,+* !"T#!$ %&'$!(%&) !F !A$ &A"-$'". %$A"T a+ The control / instrumentation shall be through micro0rocessor based %$ system 1or the
entire oal handling 0lant covering the total 1unctional reuirement o1 seuence control
interloc4 and 0rotection monitoring alarm data logging etc+
 b+ The design o1 the control system and related eui0ment shall adhere to the 0rinci0le o1 Fail sa1e o0eration o1 all system levels i+e the 1ailure o1 signal 1ailure o1 0oer or 1ailure o1 
any com0onent should not cause a hazardous condition and at the same time 0revent
occurrence o1 1alse tri0s and 0rovide reliable and e11icient o0eration o1 the 0lant under  dynamic conditions+
c+ The system shall 0rovide an integrated control / monitoring o1 coal handling 0lant eui0ment
1rom a 6ain &% ontrol #oom+ The control #oom o0erator shall be 0rovided ith color gra0hic dis0lays o1 the oal handling 0lant and ith su11icient details to allo
 0ro0er control and monitoring o1 the 0lant 1unction+
d+ The entire oal handling 0lant ill be controlled 1rom the 1olloing control 0oints+
i7 The overall o0eration and control o1 the entire oal &andling %lant ith acontrol des4 and suitable control 0anel ill be 0rovided at the 6ain &% ontrol #oom +
The main ontrol #oom o1 &% shall have control des4 in hich the o0erating station
along ith #T and 4eyboard ill be mounted and control 0anel shall have the &% mimic indicating lam0s 0ush buttons meters totalizer etc+ and the alarm 1ascia indos
at the to0+ &% main ontrol #oom ill house system cabinets in addition to control
des4+ The main sitchgear ill be housed in the main control room building 1or &% and
located near the crusher house the '8! cards and the relays 1or drives and the eui0ments
hich are around the crusher house shall be mounted in the system cabinets hich are
located in the main control room building+ ii7 The traveling Tri00ler and its associated drives shall be controlled 1rom local 0anel located
near the bun4er 1loor 6 room +The system cabinet 1or remote '8! cards relays and
inter1acing eui0ment etc+ 1or the Traveling Tri00ler drives and eui0ment shall be located in its 6 room to 0rovide status indication 8alarms 1or traveling Tri0ler 
 
o0eration in the main &% control room+ The system cabinets shall be suitable 1or 
 0rotection class '%95 +
iii7 (imilarly oal unloading o0eration 1or agon ra4es near trac4 ho00er area shall be controlled 1rom control 0anel located in the control room ith in building near trac4 
ho00er+ The !"8!FF o0eration o1 0addle 1eeders shall be controlled 1rom this 0anel a0art
1rom its local ontrol %anels+ The control room in this building shall be 0rovided ith glass 0anel to have 1ull vie o1 ra4es unloading o0eration
The integrated eigh bridges shall be 0rovided 1or the measurements o1 eight 1or each
agon at agon tri00ler com0le;+ <ach eighing bridge shall have built in diagnostic and eight measurements so1tare +The eigh bridges shall be controlled 1rom the 0anel
located in control room at Tri0ler com0le;++
The remote '8!s relays inter1acing eui0ment etc+ ill be located in system cabinets in
 building at Tri0ler com0le; to 0rovide status indication8alarm o1 the unloading o0eration in the main control room+
iv7 (tac4er #eclaimer shall be 0rovided ith %$ system+ The remote '8! and relays ill be
 0rovided on o0erator=s cabin o1 stac4er >re9claimer to indicate (tac4er re9claimer  o0eration in the main control room+
e+ Folloing <ui0ment ill come under seuential interloc4 scheme and can be started 8
sto00ed 1rom control des4 in the main &% control room ith indication on #T and mimic 0anel ith 1ault annunciation 1acility:
i+ All belt conveyors+
iv+ rushers
v+ Fla0 .ates+
The seuential control system shall 0rovide stream selection 1rom under ground conveyor  o1 trac4 ho00er 1rom crusher conveyor to stac4ing yard conveyor 1rom stac4er >re
claimer to sta4ing yard conveyor during reclaim mode etc+
&oever all the above mentioned eui0ment ill have its local control 0anels8 station 1or start 8 sto0 and 8or any other 1unction reuired ith suitable loc4able ty0e local 8
remote selector sitch shall be housed in local 0anel and 0laced near drives
1+ Folloing eui0ment ill not generally come under interloc4 scheme and can be started 8 sto00ed 8 controlled 1rom its local 0anels shall be 0rovided ith status indication and
alarms on mimic at control 0anel in main &% control room:
i+ elt eigher :
iv+ (tac4er8#eclaimer:
vii+ 6agnetic (e0arator in line+
viii+ ?entilation system i;+ -ust e;traction (ystem+
;+ -ust su00ression (ystem+
 
g+ Folloing eui0ment ill be o0erated 1rom its local 0anels ithout any indication in control
des4 and mimic+
iii+ (us0ended magnets
h+ All eui0ment systems and accessories su00lied shall be 1rom the latest 0roven 0roduct range o1 a manu1acturer+
!ne communication gateay shall be 0rovided 1or hoo4ing9u0 &%control system ith
--6'( control system located in central control room o1 0oer 0lant+
*5+,+2 !"T#!$ %&'$!(%&) !F A(& &A"-$'". ()(T<6+
*5+,+2+* ontrol %hiloso0hy+
The control / instrumentation shall be through micro0rocessor based %$ system 1or the
entire Ash handling 0lant covering the total 1unctional reuirement o1 seuence control interloc4 / 0rotection monitoring alarm data logging etc+
The %$ system shall be an integrated control and data acuisition system 1or 0roviding
control / monitoring o1 Ash handling 0lant 1rom a 6ain A&% ontrol #oom+ The control room o0erator shall be 0rovided ith colour gra0hic dis0lays o1 the Ash handling 0lant
and ith su11icient details to allo 0ro0er control / monitoring o1 the 0lant 1unction+ The
o0eration o1 ash handling 0lant ill be 0ossible in Auto 8 (emi9auto 8 manual mode + The entire Ash &andling 0lant ill be controlled 1rom the 1olloing control 0oints:
For overall o0eration and control o1 entire Ash &andling %lant ith 1ly ash system
 bottom ash system ash ater and slurry 0um0ing system and ash dis0osal system a
control des4 along ith control 0anels mimic ill be 0rovided at the 6ain A&% ontrol #oom+
i7 'n order to have ease o1 o0eration and maintenance the entral ontrol #oom o1 A&% shall
have control des4 in hich the o0erating station along ith #T and 4eyboard ill be mounted and the control 0anel shall have the A&% mimic indicating lam0s 0ush buttons
control sitches indicating instruments8recorders etc+ the alarm 1acia indos+ A&%
entral ontrol #oom ill house system cabinets in addition to control des4+ Folloing <ui0ment ill come under interloc4 scheme and can be started8sto00ed 1rom
control des4 ith indication on #T and mimic 0anel ith 1ault nnunciation 1acility:
a+ All %um0s8loers and om0ressors +  b+ ottom Ash system+
c+ Fly ash system com0rising o1 ash e;traction 1rom <(%=s / duct ho00er to bu11er
ho00er located near <(%=s and 1ly ash trans0ortation system 1rom bu11er ho00er to
storage silos+ d+ Ash slurry dis0osal system+
e+ ottom ash over 1lo system com0rising o1 bottom ash over 1lo ater storage tan4s
settling tan4 ash over 1lo ater 0um0s sludge 0um0s etc+ 1+ (ilo system+
g+ All 6otorized valves
 
For local o0eration in the ottom Ash area one B*7 no+ ottom ash control 0anel8cubical
is 0rovided 1or each unit +this 0anel shall 0rovide control 1or clin4er grinders bottom ash
discharge valves jet 0um0s 1or ash slurry trans0ort etc+ ii7 A control 0anel8cubicle shall also be 0rovided in 6 room near silo area 1or 1ly ash
collection system+ The 0anel shall 0rovide control 1or dry 0neumatic ash e;traction
trans0ortation and unloading system iii7 The system cabinet associated ith various local controls shall be located near the local
control 0anels+ These cabinets shall accommodate '8! cards relays inter1acing
eui0ments etc+ To 0rovide status indication8 alarms etc+ 1or various drives8 valves 8eui0ments in main A&% control room+
iv7 The system cabinets associated ith other system8eui0ment being controlled 1rom main
control room shall be located in the main A&% control room+ The various local control
 0anels envisaged ill be located8installed in di11erent areas 1or ease o1 o0eration o1  di11erent sub systems+ (uitable alarm8annunciation system ill be 0rovided to arn o1 
any mal91unctioning g o1 the ash handling system+
v7 The control 0anel shall be 0rovided ith adeuate nos+ o1 1acia ty0e annunciation indos 1or  audio9visual summary 1ault annunciation 0ur0ose+
vi7 !ne communication gateay along ith suitable cables shall be 0rovided 1or hoo4ing u0 the
ash handling control system ith --6'( control system located in the central control room o1 the 0oer 0lant+
vii7 All instruments li4e vacuum80ressure sitches 0ressure gauges transmitter level ontrollers
level sitches8indicators level 0robes 1lo indicators and any other s0ecial instruments 1or remote measurements in the main control room shall be 0rovided by the contractors
*5+,+3 !"T#!$ %&'$!(%&) !F %$A"T AT<# ()(T<6+
The control / instrumentation shall be through micro0rocessor based %$ system 1or the
entire %lant ater system covering the total 1unctional reuirement o1 seuence control interloc4 / 0rotection monitoring alarm data logging etc+
The %$ system shall be an integrated control and data acuisition system 1or 0roviding
control / monitoring o1 %lant ater system 1rom a -6 0lant ontrol #oom+ The control room o0erator shall be 0rovided ith colour gra0hic dis0lays o1 the entire system ith
su11icient details to allo 0ro0er control / monitoring o1 the 0lant 1unction+ The
o0eration o1 0lant ater system ill be 0ossible in Auto 8 (emi9auto 8 manual mode The entire %lant ater system ill be controlled 1rom the 1olloing control 0oints:
For overall o0eration and control o1 entire %lant ater system i+e+#a ater system
hlorination 0lant 1or ra ater system and -6 0lant system a control des4 along ith
control 0anels mimic ill be 0rovided at the -6 0lant ontrol #oom+ i7 'n order to have ease o1 o0eration and maintenance the l ontrol #oom o1 -6 0lant shall
have control des4 in hich the o0erating station along ith #T and 4eyboard ill be
mounted and the control 0anel shall have the %lant ater system mimic indicating lam0s  0ush buttons control sitches indicating instruments8recorders etc+ the alarm 1acia
indos+ -6 ontrol #oom ill house system cabinets to accommodate '8! cards drive
cards controllers etc+ ith the associated system+
 
ii7 The 1olloing local control 0anels are envisaged +hich are located near their associated
system+
a7 #a ater system local control 0anel  b7 hlorination 0lant local control 0anel 1or ra ater treatment and ater treatment
c7 hlorination 0lant local control 0anel 1or 0otable ater system+
d7 treatment 0lant local control 0anel e7 Trans1er o1 acid8Al4ali local control 0anel 1or -6 0lant
17 Any other control recommended by contractor
iii7 The local control 0anel shall be 0rovided ith adeuate nos+ o1 1acia ty0e annunciation indos 1or audio9visual annunciation to arn o0erator 1or any mal 1unctioning+
iv7 All instruments li4e vacuum80ressure sitches 0ressure gauges transmitter level controllers
level sitches8indicators level 0robes 1lo indicators and any other s0ecial instruments
1or remote measurements in the main control room shall be 0rovided by the contractors v7 The system cabinet associated ith various local controls shall be located near the local
control 0anels+ These cabinets shall accommodate '8! cards relays inter1acing
eui0ments etc+ to 0rovide status indication8 alarms etc+ 1or various drives8 valves 8eui0ments in -6 %lant control room+
vi7 The 1olloing minimum sa1ety inter loc4s shall be 0rovided in the system 1or 0um0s and
drives+ a7 ater level in the sum0——> very lo
 b7 %ressure at 0um0 discharge due to accidental closure o1 valve——9 high
c7 inding tem0 o1 6otorB1or &T drives7——>high d7 Tem0erature o1 0um0s thrust bearing B&T drives only7———9&igh
e7 earing vibration B1or &T drives only7———9&igh
vii7 <mergency sto0 o1 drives has also been envisaged 1rom the local 0ush button Bloc4able stay
 0ut ty0e7 0rovided near the drive+ This local 0ush button ill be directly ired to (itchgear86+ To monitor the &T8$T drives 1olloing minimum signals shall be
e;changed beteen (itch gear86 and %$ system:
a+ -rive start8sto0 command+  b+ -rive status 1eedbac4 B!"8!FF7
c+ #eady to start+
d+ <lectrical tri0s B1rom (.#867+ viii7 -6 0lant %$ system shall be 0rovided ith suitable communication gateay 1or 
monitoring through --6'( in central control room
*5+,+3+* ()(T<6 -<(#'%T'!" :
A7 #A AT<# ()(T<6 !"T#!$+ i7 The 0re treatment 0lant is controlled 1rom %$ and the chemical dosing is envisaged only in
manual mode 1rom local+ The -osing 0um0s Tan4 agitator (ludge 0um0s and
clari1loculator bridge 0um0s can be o0erated 1rom remote Bie+%$7 as ell as local control 0anel+
ii7 -rives on the clari1ier bridge i+e+ ra4e mechanism drive motor and 1loculator agitator motor 
shall be o0erated 1rom local start8sto0 0ush buttons to be located near it+ iii7 The clari1ied ater storage sum0 level is controlled by ra ater inlet control valve ith
res0ect to the level in the clari1ied ater sum0 +
 
iv7 All the chemical dosing8solution tan4 shall be 0rovided ith local level indicator and lo
level sitch hich shall be interloc4ed ith res0ective dosing 0um0s i+e the 0um0 shall
tri0 in case o1 the lo level in the res0ective tan4+ v7 The sludge sum0 shall be 0rovided ith lo and high level sitch and selected 0um0
hichever in auto shall start automatically hen sludge sum0 level is high and sto0
automatically hen sum0 level is lo+ 7 &$!#'"AT'!" %$A"T !"T#!$+
B control 1or ater treatment #a ater treatment7
i7 The chlorination 0lant shall be controlled manually 1rom local control 0anel located in chlorination system main control building+ The control o1 all the drives and au;iliaries
shall be im0lemented 1rom this 0anel+ The control 0anel shall have o0erators inter1ace
devices as selector sitches indicating lam0s 0ush buttons and other reuired indicators+
ii7 The control 0anel shall also 0rovided control 1or absor0tion system to be located in main chlorination building+
iii7 %rovision shall also be given 1or local o0eration o1 0um08drives 1rom control o;+
<mergency tri0 0ush buttons shall be 0rovided 1or all such drives hich needs immediate sto00ing due to any mal9 1unctioning o1 eui0ment or due to health8o0erator hazards+
%rovision shall be made to o0erate the booster 0um0s through selector sitch+
iv7 $ocal starting shall be 0ossible through remote8local selector sitch on control 0anel or in 6+ Tri00ing o1 8 emergency sto0 o1 dries motors locally shall be 0ermissible
irres0ective o1 0osition o1 remote8local selector sitch+ 0rovision 1or loc4ing the local
sto0 0ush buttons a1ter tri00ing the motors 1rom local 0ush buttons shall be 0rovided+ v7 A indo based annunciator system shall be 0rovided in local control 0anel 1or all major 
alarms8tri0 conditions+ The annunciation system shall also include alarms 1or abnormal
level conditions in caustic solutions 0re0aration cum recirculation tan4s
vi7 The chlorination o1 0otable ater system shall be se0arately carried out through chlorine cylinder +This arrangements is located near by -6 0lant building +The o0eration
/control is similar to above and o0erated through a local control 0anel located there+
7 -+6+ %$A"T !"T#!$+ i7 The o0eration and control o1 -ematerializing %lant shall be through a %$ in Auto8semi auto
mode+ &oever there shall be 0rovision to changeover to manual o0eration+ The control
o0eration 0hiloso0hy shall include seuential control li4e semi9auto8remote9 manual8manual 1acility li4e ste0 numbering ste0 time ela0sed time hold8release 0ush
 button through #T 1lo o1 control logic Bseuence o1 various ste0s7 1or smooth
o0eration o1 the entire 0lant +
ii7 -6 0lant control system shall be designed so that com0lete !0eration ontrol / monitoring interloc4s logic etc+ o1 #a ater system and associated clari1ied sum0 0um0s #a
ater chlorination system service ater 0um0s T ma4e u0 0um0s %otable ater 
 0um0s control -6 1eed 0um0s etc+shall be 0rovided 1rom -6 0lant control room iii7 The o0erator ill initiate the o0eration o1 regeneration8rinsing8bac4ashing o1 a 0articular 
ion9e;change unit81ilter based on the criteria described belo but the change 1rom one
ste0 o1 the seuence to the ne;t ill be automatic+ The system ill em0loy a logical system hich ill lin4 the various ste0s such as closing8o0ening o1 di11erent valves
starting8sto00ing o1 various 0um0s hich ma4e a seuence+
iv7 Filters8lon e;change units ill be automatically isolated 1rom the system as 1ollos:
 
-i11erential 0ressure across the 1ilter bed+
Activated arbon Filter : !n 0assing 0redetermined volume o1 ater or on reaching
 0reset residual chlorine level o1 high -i11erential 0ressure across the 1ilter bed+
ation : !n reaching high sodium lea4age or on 0assing o1
%redetermined volume o1 1iltered ater hichever  !ccurs 1irst+
Anion Unit : !n reaching higher conductivity / (ilica at
!utlet or on 0assing o1 0redetermined volume o1  -ecationised ater hichever occurs 1ist+
6i;ed ed Unit : !n reaching higher conductivity 0& at outlet or 
!n 0assing o1 0redetermined volume o1 deionised
ater or on reaching 0reset silica level hichever  !ccurs 1irst+
v7 As state above the isolation o1 the e;changer unit 1rom the system ill be dis0layed on #T+
The o0erator ill then select the 0articular vessel to be regenerated through o0tion and selected 1or regeneration+ !n selecting the o0tion the regeneration cycle shall start
automatically+ -uring regeneration the 0rogress o1 di11erent seuence8sub90rocess shall
 be dis0layed to the o0erator in the 1orm o1 ste0 number as ell as ste0 descri0tion hich is in 0rogress the set time 1or that+
vi7 The 0rogress o1 the seuence shall be dis0layed to the o0erator through suitable means+ The
system ill incor0orate the necessary sa1ety systems loc4ing systems and manual emergency system+ !n 1ailure o1 logic system in beteen the 1ailure shall be
annunciated to the o0erator and all the valves corres0onding to that unit being
regenerated shall close automatically+
vii7 A gra0hic de0icting the com0lete 0lant 0rocess o0erations shall be designed 0ro0erly and be available on #T+ The gra0hic shall indicate the di11erent 1ilters e;changer units
measuring tan4s o0ening8closing o1 all valves Bmotorized and solenoid o0erated7 !" 8
!FF o1 di11erent 0um0s and bloers etc+ olor coding shall be used to di11erentiate lines 1or di11erent services such as normal ater lines bac4ash lines Acid 8 Al4ali lines etc+
viii7 (e0arate conductivity measurement silica mesurement and 0& measurements shall be
em0loyed 1or ensuring the various 0arameters in the e11luent and in the rinse line o1  caution anion and mi;ed bed e;changer units 1or normal and rinsing o0eration+ The
conductivity cell in the rinsing line shall be automatically isolated during the 1irst hal1 o1 
the rinsing cycle and shall be connected automatically during the second hal1 o1 rinsing
cycle hen the conductivity is less than *CC micromhos8cm e;cess over the rinse ater  conductivity+
i;7 -ischarge valves o1 all 0um0s o1 the entire 0lant connected ith semi9auto8remote manual
o0eration shall be 0neumatically o0erated: and all 0um0s 0neumatically o0erated valves drive motors o1 all the other eui0ment and other accessories 0neumatic on9o11 valves
etc+ shall be com0letely suitable 1or remote manual o0eration 1rom o0erating
console80anel+ All drive motor shall also be 0rovided ith arrangement o1 local sto00ing+ Tri00ing o1 drive motors 1rom local 0anel shall be 0ermissible irres0ective o1 the 0osition
o1 local9remote selection o0tion+ $ocal sto0 0ush9button shall be loc4ed a1ter tri00ing the
motor 1rom local+
 
;7 Although the basic demineralising 0rocess is semi9automatic in nature 1olloing o0erations
shall be 0er1ormed manually+
Unloading and Trans1er o1 Acid+ a+ &ydrochloric acid ill be unloaded 1rom the road tan49cars by o0erating any one o1 the acid
unloading 0um0s+ !0earation shall be controlled 1rom local 0anel+
 b+ &ydrochloric acid stored in over ground tan4s ill be led remote manually by gravity to the acid measuring tan4s 1or cation mi;ed bed units to 1ill u0 to the desired level+
(ubseuent trans1er o1 acid 1rom the measuring tan4s to the ion9e;changer units as
reuired in regeneration o0eration is hoever automatic+ Unloading %re0aration and Trans1er o1 Al4ali+
a+ austic solution ill be unloaded 1rom the road tan49cars by o0erating any one o1 the austic
unloading 0um0s+ !0eration shall be controlled manually 1rom local 0anel+
 b+ austic solution stored in over ground tan4s ill be led remote manually by gravity to the caustic measuring tan4s 1or anion mi;ed bed units to 1ill u0 to the desired level+
(ubseuent trans1er o1 caustic 1rom the measuring tan4s to the ion9e;changer units as
reuired in regeneration o0eration is hoever automatic+ c+ All o0erations in items Ba7 and Bb7 ill be controlled manually 1rom the local 0anel+
d+ Trans1er o1 al4ali to the res0ective measuring tan4s 1or anion and mi;ed bed e;changer units
ill be done remote manually+ &oever subseuent trans1er o1 al4ali to res0ective ion e;changer units ill be automatic+
 "eutralization o1 aste 1rom -6 %lant+
a+ A1ter com0letion o1 regeneration o1 one cation and one anion e;changer the aste generated during regenerations ill be thoroughly recirculated in the neutralizing 0it and i1 
necessary acid8al4ali solution ill be added to ma4e the aste slightly al4aline+
 b+ hen reuired 0& o1 aste solution has been reached the aste solution ill be 0um0ed to
the e11luent treatment 0lant area and the e11luent shall con1orm to '(92,DC+ The 0um0 ill automatically be tri00ed hen the level in neutralization 0it reaches very lo+
c+ %riming o1 0um0s o0erating under suction li1t and o0erations as in Ba7 and Bb7 ill be done
manually+ All 0um0 o0eration shall be controlled 1rom the local 0anel+ -7 T#<AT6<"T %$A"T !"T#!$
B1or ma4e u0 to condenser7
The o0eration and control 0hiloso0hy o1 circulating ater treatment 0lant shall be as  belo:
i7 (ul0huric acid shall be unloaded by to no+ unloading 0um0s into over ground acid storage
tan4s+ Acid shall be subseuently trans1erred to acid dosing tan4s by using above
unloading 0um0s+ ii7 The sul0huric acid dosing 0um0s o0eration shall be auto and manual 1rom local control 0anel+
'n the auto mode the rate o1 acid dosing shall be controlled by auto adjusting o1 the
stro4e o1 the 0um0s by sensing o1 0h o1 circulating ater+ &oever the starting and tri00ing o1 the dosing 0um0s shall be controlled by the level sitches o1 the dosing tan4s+
iii7 -uring normal o0eration sul0huric acid dosing 0um0s shall o0erate in the auto mode and
inject sul0huric acid to maintain the 0h o1 circulating ater at desired level so that al4alinity remains ith in desired limits+
iv7 The o0eration o1 other chemical dosing 0um0s li4e anti scalant dosing 0um0s anti corrosion
 
*5+,+, !"T#!$ %&'$!(%&) F!# !6%#<((<- A'# ()(T<6
*5+,+,+* !"T#!$ %&'$!(!%&)+ i7 om0lete automation o1 the om0ressed Air (ystem and Air drying %lant shall be based on
dedicated micro0rocessor based %$ ontrol (ystem+ The ontrol (ystem shall be
com0rising a %rocessor Unit 'n0ut+8!ut0ut modules $- screen dis0lay The %$ l ill
 be housed in local control 0anel located in com0ressor room8com0artment+ + ii7 The local control 0anel shall house %$ hardare B0rocessors '8! cards relays cables etc7
$- screen Alarm annunciators con1igured in %$+ 'ndication lam0s itches
(tart8(to0 0ush buttons Au;iliary relays 6otor current etc+through the local control  0anel local manual and automatic o0eration o1 the com0ressed air system shall be
carried out 1or local o0eration o1 the system
iii7 <ach com0ressor shall be suitable 1or individual and 8 or 0arallel o0eration ith other  com0ressors at any demand rate 1rom zero to ma;imum ca0acity + <ach com0ressor shall
 be suitable 1or start u0 and o0eration o1 a second or third o0erating ith the 1irst
com0ressor in o0eration at all load ith no instability in 0er1ormance+ iv7 The o0erating com0ressor 1or units shall be on automatic mode +both service air / instrument
air is is 1ed 1rom the same and common com0ressor+ The com0ressors shall be utilized 1or 
!n9o118load control as decided by the o0erator+ All necessary instruments 8controller and
interloc4 80rotection 8monitoring and seuential logics controls shall be 0rovided 1or  im0lementation andare achieved by %$+
v7 <ach air dryer shall be 0rovided ith inde0endent micro0rocessor %$ heater set o1 absorber 
+ ith a selector sitch the 0articular air dryer is selected and then the o0eration is 1ully automatic+ (tart u0 and shut don 0ermissive interloc4s 1or com0ressor and air drying
 0lant shall be 0rovided 1or sa1e o0eration o1 the eui0ment+
vi7 &oo4ing u0 ith central control room --6'( ill be done through 0ro0er gateay and communication cables+
vii7 All 0rocess connection and 0i0ing materials including 0i0es valves mani1olds and 1ittings as
reuired 1or connecting all 1ield instruments shall be 0rovided+
*5+,+5 !"T#!$ %&'$!(!%&) !F FU<$ !'$ (T!#A.< A"- &A"-$'". ()(T<6 i7 To no control 0anels B$ocal control 0anel9* / $ocal control 0anel927 are envisaged 1or 
control and o0eration 1or 1uel oil unloading storage / trans1er system+ $ocal control
 0anel9* shall be 0laced at 1uel oil 0um0 house 1or control and o0eration o1 &F!8$(&( / $-!unloading storage and trans1er o0eration+ / $ocal control 0anel92 shall be located
in Fuel oil 0ressuring and heating building 1or control and o0eration o1 &F!8$(&( /
$-!day storage tan4+ ii7 hen the unloading header / the 0i0ing at the 0um0 suction becomes 1illed ith oil and the
steady su00ly is ensured at the suction 0i0e the unloading 0um0s shall be started manually
1rom 0ush buttons in the local control 0anel9E located in the 1uel oil unloading 0um0 house+
These 0um0s shallhoever tri0 automatically in the event o1 high level in the res0ective oil B$-! or &F!8$(&(7 storage tan4+ (tandby 0um0 shall start automatically henever 
 
 0ressure lo+ The di11erential 0ressure across the suction du0le; strainer high initiates
alarms to change the du0le; strainer 0osition+
iii7 The trans1er 0um0s to day tan4 shall be started manually 1rom 0ush buttons in the above local control 0anel9*+ These 0um0s tri0 automatically hen the level in the source storage tan4 
goes lo or the level o1 res0ective day oil tan4 goes high+ These 0um0s ill also be
 0revented 1rom starting in case o1 lo level in the res0ective source storage tan4 or high level in res0ective day oil tan4 or high 0ressure dro0 across the res0ective suction strainer+
(tand9by 0um0 shall start automatically henever any o0erating 0um0 tri0s due to any
1ault Bmechanical8electrical7 or discharge header 0ressure goes lo+ iv7 The drain oil 0um0 ill start8sto0 automatically on high8lo level initiation+ Further there
should be 0rovision 1or alarm also+ The standby 0um0 shall also o0erated automatically
in case the o0erating 0um0s tri0+
v7 $ocal emergency sto0 0ush button shall be 0rovided 1or all electrical drives+ vi7 (team 1lo to &F!8$(&( storage and day tan4 1loor coil heater shall be controlled by
 0neumatically o0erated control valve B!"9!FF ty0e7 to maintain the desired oil
tem0erature+ vii7 (team 1lo to suction heater o1 &F!8$(&( day tan4s shall be regulated through
 0neumatically o0erated control valve on the steam su00ly line to the suction heater and
the same shall be actuated 1rom heater outlet oil tem0erature+ viii7 The $ocal control 0anel9* / $ocal control 0anel92 0anel shall include start8sto0 buttons 1or 
all drives status indication etc+ and shall also include com0lete annunciations Balarm /
indication7 ith T<(T8A"!$<-.<8#<(<T 0ush buttons+ i;7 !ne communication gateay shall be 0rovided by hoo4ing u0 the system ith --6'( 1or
monitoring 1rom central control room
;7 All the instruments shall be su00lied as reuired ith all necessary accessories 1or sa1e and
e11icient running o1 the 0lant+
omments B*7
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-iled under #ncategori/ed 0 shia2ichoudhur3 4 1+1, am
 !ags instrumentation cable
15.9 INSTRUMENTS AND CONTROL CABLES
15.9.1 All interconnecting cabling reuired 6or '7I s3stems8euipment* interpanel
cabling* power suppl3 cabling etc.: shall be included in the scope o6 this
speci;cation. !he cables supplied shall include but not be limited to the
6ollowing
i: 'ontrol cables <1.1 =>* multicore* 1.5 s. mm: stranded copper conductor* P>'
insulated* steel wire armoured and P>' sheathed* ?ame retardant low smo=e.
ii: Instrumentation cables
iii: Pre6abricated cables
i: All special cables i.e. screened* twisted pair coa@ial* heat resistant* etc. reuired
6or '7I s3stem.
: Power suppl3 cables. !hese shall be "ed* ellow* Blue* Blac= coloured 6or three
phase with neutral s3stem. -or &' these shall be coloured "ed 7 Blac=.
i: 'ompensation cable 6or !hermocouples.
ii: An3 other reuired 6or '7I s3stems not speci;call3 brought out aboe.
15.9.) (a3ing* termination and 6erruling o6 all cables coered in this speci;cation
shall be included in the tenderers scope. "euisite wiring schedules and
cable schedules shall be prepared b3 the success6ul bidder and shall be
sub2ect to approal b3 purchaser. All cables shall be terminated with proper
lugs. At e@ternal terminals inside the panel* there should be suCcient space
so as to ensure eas3 replacement and ;@ation o6 e@ternal cables.
15.9.D !he cables in hot /one shall be ;re and heat resistant t3pe and be laid in
insulated heat proo6 conduits upto 2unction bo@es located 6ar awa3 6rom hot
 
15.9. E Special earthing reuirements o6 the s3stem* earthing details etc. should be
brought out b3 the bidder 6or the euipment being supplied. All earthing shall
be done with green coloured leads to hae proper distinction. !wo copper
earth bases o6 F5G5 mm should be proided in each panel.
15.9.5 !he philosoph3 o6 termination o6 arious t3pe o6 ;led instruments8designs
shall be submitted in adance 6or the approal o6 the owner.
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15.11 Plant 'ommunication S3stem
-iled under #ncategori/ed 0 shia2ichoudhur3 4 1+15 am
 !ags Plant communication s3stem
15.11 PLANT COMMUINICATION SYSTEM
15.11.1 !he s3stem shall consists o6 electronic priate automatic branch e@change
<%PABH :* public address 6or the complete power plant including switch3ard*
coal handling areas* ash handling areas* 'W and other o site areas.
%lectronic Priate Automatic Branch %@change <%PABH:
Plant communication s3stem shall include a priate telephone e@change. !he
telephone e@change shall be D) bit microprocessor base %lectronic Pt.
Branch e@change <%PABH: 6or industrial telephone communication s3stem.
 !he e@change shall hae 6acilit3 to connect &.O.! 8 truc= lines
 !he %PABH shall be o6 approed technolog3 o6 department o6 
telecommunication* oernment o6 India. It shall hae 6ull3 non bloc=ing
architectural.
%PABH shall hae K1 no. )++ lines* e@pandable to )5L lines including , P7!
and digital lines.
15.11.) !he e@change shall be suitable 6or high speed digital data and oice
communication and shall hae the 6acilities to connect data terminals 6rom
6a@ machine and personal computers along with telephone serices.
 
15.11.D !he batter3 and batter3 chargers combination shall be such as to ensure
continuit3 o6 &.'. suppl3 to %PABH s3stem at all times without een
momentar3 interruption o6 sericed.
15.11.E !he 6acilit3 to be proided b3 %PBAH s3stem shall include but not limited to
the 6ollowing
ii. Shuttle on enuir3 calls.
iii. 'all store and retriee.
i. Wait on bus3
@ii. line loc= out.
@iii. Mowler tone alert.
15.11.5 Operator 'onsole.
 !he operator console shall hae P' base maintenance N cumoperation 8
Administration 6acilities along with necessar3 displa3 <>&#:* =e3 board printer
etc. and include but not limited to the 6ollowing 6eatures
i. Subscriber calling.
ii. 'all hold.
i. Serial calls.
i@. Abbreiated dialing.
@i. Waiting call displa3.
@ii. S3stem alarm displa3
@@i. &epartmental calls.
@@i. &irect station selection.
 !he telephone sets shall be o6 the 6ollowing t3pes
&es=top push button operated decadic t3pe with tone dialing <ordinar3: N
 !3pe A.
&es=top push button operated decadic t3pe with tone dialing and 1+ nos.
memor3 storage t3pe QBR
Same as t3pe A but wall mounted t3pe instruments t3pe Q'R
-lamproo6 telephone instruments t3pe Q&R.
 
15.11.F !elephone cables.
 !elephone cable shall be +.5 mm dia annealed electrolitic copper conductor
both inner and outer sheet P>' insulated* color coaded twisted pair* laid up *
taped galani/ed round 8 ?at wire armoured con6orming to IS155E.
'able si/es shall be standardi/ed in terms o6 the no. o6 pairs * which shall be
1++ pairs* 5+ pairs* )+ pairs* 1+ pairs* and 5 pairs.
15.11., Junction bo@es.
 !he telephone 2unction bo@es shall be o6 $S steel 8 ;bre haing IP5) degree
o6 protection 6or outdoor dut3 and IPE) 6or indoor dut3. It will be complete
with 2umper * terminal bloc=* earthing * studs suitable 6or terminating O"
looping telephone cables.
15.11.9 Public Address <PA: S3stem.
&istributed PA s3stem shall be supplied 6or the main plant* osite areas and
'MP areas. PA s3stem shall be microprocessor based and user
programmable. !he s3stem shall comprise o6 6our <E: subgroups* namel3
Subgroup1 6or #nit o.1. Sub group) 6or #nit o.) * SubgroupD 6or
'ommon Areas li=e Switch3ard and Osets* SubgroupE 6or 'MP area. (ist o6 
distribution o6 PA s3stem -ield 'all Station <''S: is gien in Anne@ureB.
15.11.1+ !he s3stem shall hae 6our <E: channel part3 and page s3stem with 6acilit3
o6 inter connection among the subgroups through $aster 'all Station <$'S:.
 !he s3stem shall be operatie without interruption een on station A' suppl3
6ailure. Incoming suppl3 shall be 6ed 6rom main plant #PS.
15.11.11 !he PA s3stem 6or coal handling plant area* shall be suitable 6or heail3
dust3 atmosphere. !his s3stem shall aoid use o6 handsets* as these are
susceptible to pil6erage in such areas.
15.11.1) S3stem details
a: PA s3stem shall hae 6our <E: channels part3 8 channel page s3stem.
-ollowing communication modes are possible
i. Between -ield 'all Station <-'S: in the same subgroup without the help o6 $aster
'all Station <$'S:.
ii. Between $aster 'ontrol Station and an3 -ield 'all Station <-'S:*
iii. Between an %PABH subscriber with the -ield 'all Station <-'S: through %PABH
inter6ace.
 
Indiidual s3stem shall be e@pandable with ma@imum number o6 sets per
s3stem limited to 1++ nos.
b: each group shall consist o6 the 6ollowing main euipment.
i. Indoor8Outdoor* column8wall8des=mounted -ield 'all Stations <-'S: with built Nin
ampli;ers o6 adeuate output capacit3. %@tension ampli;ers shall be proided
6or des=top mounted handset station whereer needed.
ii. Morn t3pe loudspea=ers.
iii. Indoor cone t3pe loudspea=ers.
i. $ain 2unction bo@es 7 distribution boards and 2unction bo@es 6or handset station
and 6or loudspea=ers etc.
. Weatherproo6 canop3 8 bo@ 6or outdoor handset stations.
i. Acoustic hoods.
i@. 'entral 'ontrol %@change.
@. One des= mounted t3pe $aster 'all Station <$'S:.
c: &es= mounted MS 6or unit control rooms shall hae snap action sel6 return micro
switches 6or dierent 6unctions such as PA%* (O#&SP%A%" $#!% and
SI"%* (%& indicating lights* a builtinloud spea=er and d3namic* noise
canceling microphone.
d:. &es= mounted $aster 'ontrol Station <$'S: shall hae a multi6unction =e3
board* a bac=lit displa3* a press to page switch* a goosenec= microphone with
d3namic noisecanceling and a built in spea=er. !he communication 6rom $'S
to an3 ;eld station is a hands6ree oice switch duple@ communication
without reuiring number dialing.
e: Outdoor8Indoor -'S shall be proided at arious locations o6 the plant and
au@iliar3 buildings. In some areas 6or nois3 areas such as turbine hall* mills
etc. MSs shall be proided with acoustic hoods to cut down the ambient noise
6or proper communication.
6: Where cable tra3s are not aailable cables shall be laid directl3 along the wall.
g: !he outdoor (S shall be o6 weather proo6 die cast aluminum construction.
 
i: -or areas where 6alse ceiling will be proided* cone t3pe spea=ers shall be suitable
6or 6alse ceiling mounting.
 2: All outdoor t3pe handsets and spea=ers shall be proided with dust and weather
proo6* pil6er proo6 enclosure with loc=ing 6acilities.
15.11.1D Wal=3 !al=3 S3stem
Wal=3 !al=3 S3stem shall be a twowa3 radio communication s3stem with an
eectie reach o6 5 =m. "adius. !he s3stem shall comprise o6 repeater* a >M-
antenna and )+ os. tal=bac= transreceiers.
"epeaters are special rela3 station which retransmit one users transmission
to another. I6 comprises o6 receie* transmitter* inter6ace controller* power
suppl3 and duple@er.
As soon as repeater receies a alid signal its transmitter turns on. !he receies
audio is 6ed into the transmitter* which then retransmits the same.
"etransmission usuall3 happens on a dierent 6reuenc3 so that it does not
load the receier and create a loop. !he duple@er proides additional isolation
o6 +1+++ dB.
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Tags: *5+2+C .eneral #euirements
15.).' eneral "euirements 
*5+2+* The ontractor shall 0rovide ontrol / 'nstrumentation systems %$ based control systems 1or station au;iliaries eui0ment mounted8local instruments and transmitters
including sensing elements as reuired $ocal instrument enclosures8rac4s $ocal gauge
 boards8rac4s %rocess onnection and %i0ing (am0le lines <lectric %oer (u00ly
(ystem Actuators 1or valves 'nstrumentation ables etc+ as identi1ied in the s0eci1ication+
*5+2+2 The ontractor shall 0rovide all material eui0ment and services so as to ma4e a totally
integrated 'nstrumentation and ontrol (ystem together ith all accessories au;iliaries
and associated eui0ments ensuring o0erability maintainability and reliability+ The or4 shall be consistent ith modern 0oer 0lant 0ractices and shall be in com0liance ith all
a00licable codes standards guides statutory regulations and sa1ety reuirements in
1orce+
*5+2+3 The ontractor shall include in his 0ro0osal all instruments and devices hich are needed 1or the com0leteness o1 the system+ (ame shall be subject to a00roval o1 the 0urchaser
during detailed engineering+ All instruments and control eui0ments li4e 0rimary and
secondary instruments etc+ shall meet the 1unctional reuirements + 'n addition all
electrical instrument solenoid valves hich are located in the 1ield8hazardous locations shall be 0rovided ith e;0losion 0roo1 enclosure suitable 1or hazardous areas described
in "ational <lectric ode BU(A7 Article 5CC lass9' -ivision9'+ All 1ield iring should
 be through conduits+ All 1ittings cable glands etc +shall be strictly as 0er "< recommendation article 5CC to 5C3+
*5+2+, All instrumentation and control eui0ment instruments instrumentation su00ort steel
or4 1or gauge board cabinet local remote instruments and 0i0e or4 shall be suitable
1or guaranteed 0er1ormance at the ambient humid dusty and corrosive conditions  0revailing at site and s0eci1ied elsehere+ <nvironmental test 1or all electronic items shall
 be carried out as 0er '(: 2*C or euivalent standard acce0table to the oner+ All indoor
eui0ment shall be suitable 1or continuous sa1e o0eration at ambient o1 5C degree centigrade and also during 0eriods o1 air conditioning 1ailure ithout any loss o1
1unction or de0arture 1rom the s0eci1ication reuirements covered under this
s0eci1ication+ The 0anels8des48cubicles located in air conditioned area and indoor shall
com0ly ith the reuirement o1 0rotection class '%9,2 and 0anels located in outdoor areas
shall be '%95 as 0er '(: 2*,N+ All outdoor instruments and control devices shall be suitable 1or ambient o1 GC -egree centigrade and humidity o1 D5O+ -egree o1 0rotection
1or outdoor eui0ment shall be minimum '%95 as 0er '(: 2*,N+
*5+2+5 The eui0ment o11ered shall be o1 0roven ma4e and design ensuring reliability sa1ety
e11iciency and long continuous trouble91ree service ith high economy and lo maintenance costs+ The /' system o11ered shall meet the o0eration reuirements in all
regimes control 0hiloso0hy design conce0ts sizing and design criteria as indicated in
various sections o1 this s0eci1ication+ The eui0ments8devices o11ered shall be suitable 1or  satis1actory o0eration at ambient tem0erature s0eci1ied ith dusty humid and corrosive
conditions 1aced in thatl area and their design 0rinci0les shall ta4e into account but not be
limited to the 1olloing :9
a7 'nterchangeability and e;0andability
e7 (hort circuit 0roo1ing 17 !ver9voltage 0rotection
g7 <asy access to all com0onents
h7 &ighest class or4manshi0 general 1inish i7 Adeuate s0ace availability 1or connecting e;ternal cables+
 j7 "oise immunity including immunity against radio 1reuency inter1erence and
electromagnetic inter1erence to be 0rovided ith o0to8galvanic isolation+
47 Avoidance o1 overheating o1 electronic com0onents l7 Fail sa1e o0eration: 't shall be ensured by the bidder that 1ailure o1 any sensor
transmitter controller 1inal control element 0oer or control su00ly shall not
cause a hazardous condition+ Further such a 1ailure should 0rovide audio and visual alarms+
m7 (urge 0rotection 1or electronic com0onents as 0er '<<<9,N2+
n7 (election o1 high uality eui0ments8material+ *5+2+ All eui0ment8systems covered under the s0eci1ication shall be subject to ins0ection and
tests as 0er the relevant standards including any additional tests considered necessary by
the 0urchaser during manu1acture erection and on com0letion o1 the or4+ The a00roval o1 the 0urchaser on 0assing o1 such ins0ection o1 test ill not hoever 0rejudice the
right o1 0urchaser to reject the eui0ment i1 it does not com0ly ith s0eci1ication
reuirements hen erected or does not give satis1actory 0er1ormance in service+
*5+2+N The res0onsibility 1or sa1e e11icient and reliable o0eration o1 the eui0ment8system su00lied shall rest ith the bidder+ A00roval o1 the draings by 0urchaser8consultant
shall not in any ay relieve the bidder o1 his obligation8res0onsibility in this res0ect+
*5+2+G ontractor shall include in his bid a detailed ill o1 6aterial B!67 1or each o1 the systems+
*5+2+D All 0anels des4s cabinets shall be 0rovided ith a continuous bare co00er ground bus+
 
control system+ The e;act grounding scheme shall be 1inalized during detailed
engineering+
*5+2+*C The control system and various eui0ment shall con1orm to the reuirements s0eci1ied in the section 9 o1 T. 0ac4age hich are not s0eci1ically covered herein
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Tags: *5+2+C .eneral #euirements
15.).' eneral "euirements 
*5+2+* The ontractor shall 0rovide ontrol / 'nstrumentation systems %$ based control
systems 1or station au;iliaries eui0ment mounted8local instruments and transmitters
including sensing elements as reuired $ocal instrument enclosures8rac4s $ocal gauge
 boards8rac4s %rocess onnection and %i0ing (am0le lines <lectric %oer (u00ly (ystem Actuators 1or valves 'nstrumentation ables etc+ as identi1ied in the
s0eci1ication+
*5+2+2 The ontractor shall 0rovide all material eui0ment and services so as to ma4e a totally
integrated 'nstrumentation and ontrol (ystem together ith all accessories au;iliaries and associated eui0ments ensuring o0erability maintainability and reliability+ The or4
shall be consistent ith modern 0oer 0lant 0ractices and shall be in com0liance ith all
subscribe 5293399 https://specinstr  
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a00licable codes standards guides statutory regulations and sa1ety reuirements in
1orce+
*5+2+3 The ontractor shall include in his 0ro0osal all instruments and devices hich are needed
1or the com0leteness o1 the system+ (ame shall be subject to a00roval o1 the 0urchaser during detailed engineering+ All instruments and control eui0ments li4e 0rimary and
secondary instruments etc+ shall meet the 1unctional reuirements + 'n addition all
electrical instrument solenoid valves hich are located in the 1ield8hazardous locations shall be 0rovided ith e;0losion 0roo1 enclosure suitable 1or hazardous areas described
in "ational <lectric ode BU(A7 Article 5CC lass9' -ivision9'+ All 1ield iring should
 be through conduits+ All 1ittings cable glands etc +shall be strictly as 0er "< recommendation article 5CC to 5C3+
*5+2+, All instrumentation and control eui0ment instruments instrumentation su00ort steel
or4 1or gauge board cabinet local remote instruments and 0i0e or4 shall be suitable
1or guaranteed 0er1ormance at the ambient humid dusty and corrosive conditions
 0revailing at site and s0eci1ied elsehere+ <nvironmental test 1or all electronic items shall  be carried out as 0er '(: 2*C or euivalent standard acce0table to the oner+ All indoor
eui0ment shall be suitable 1or continuous sa1e o0eration at ambient o1 5C degree
centigrade and also during 0eriods o1 air conditioning 1ailure ithout any loss o1 1unction or de0arture 1rom the s0eci1ication reuirements covered under this
s0eci1ication+ The 0anels8des48cubicles located in air conditioned area and indoor shall
com0ly ith the reuirement o1 0rotection class '%9,2 and 0anels located in outdoor areas shall be '%95 as 0er '(: 2*,N+ All outdoor instruments and control devices shall be
suitable 1or ambient o1 GC -egree centigrade and humidity o1 D5O+ -egree o1 0rotection
1or outdoor eui0ment shall be minimum '%95 as 0er '(: 2*,N+
*5+2+5 The eui0ment o11ered shall be o1 0roven ma4e and design ensuring reliability sa1ety
e11iciency and long continuous trouble91ree service ith high economy and lo maintenance costs+ The /' system o11ered shall meet the o0eration reuirements in all
regimes control 0hiloso0hy design conce0ts sizing and design criteria as indicated in
various sections o1 this s0eci1ication+ The eui0ments8devices o11ered shall be suitable 1or  satis1actory o0eration at ambient tem0erature s0eci1ied ith dusty humid and corrosive
conditions 1aced in thatl area and their design 0rinci0les shall ta4e into account but not be
limited to the 1olloing :9
a7 'nterchangeability and e;0andability  b7 6al1unction identi1ication
c7 6aintainability
e7 (hort circuit 0roo1ing 17 !ver9voltage 0rotection
g7 <asy access to all com0onents
h7 &ighest class or4manshi0 general 1inish i7 Adeuate s0ace availability 1or connecting e;ternal cables+
 j7 "oise immunity including immunity against radio 1reuency inter1erence and
electromagnetic inter1erence to be 0rovided ith o0to8galvanic isolation+ 47 Avoidance o1 overheating o1 electronic com0onents
 
l7 Fail sa1e o0eration: 't shall be ensured by the bidder that 1ailure o1 any sensor
transmitter controller 1inal control element 0oer or control su00ly shall not
cause a hazardous condition+ Further such a 1ailure should 0rovide audio and visual alarms+
m7 (urge 0rotection 1or electronic com0onents as 0er '<<<9,N2+
n7 (election o1 high uality eui0ments8material+ *5+2+ All eui0ment8systems covered under the s0eci1ication shall be subject to ins0ection and
tests as 0er the relevant standards including any additional tests considered necessary by
the 0urchaser during manu1acture erection and on com0letion o1 the or4+ The a00roval o1 the 0urchaser on 0assing o1 such ins0ection o1 test ill not hoever 0rejudice the
right o1 0urchaser to reject the eui0ment i1 it does not com0ly ith s0eci1ication
reuirements hen erected or does not give satis1actory 0er1ormance in service+
*5+2+N The res0onsibility 1or sa1e e11icient and reliable o0eration o1 the eui0ment8system su00lied shall rest ith the bidder+ A00roval o1 the draings by 0urchaser8consultant
shall not in any ay relieve the bidder o1 his obligation8res0onsibility in this res0ect+
*5+2+G ontractor shall include in his bid a detailed ill o1 6aterial B!67 1or each o1 the systems+
*5+2+D All 0anels des4s cabinets shall be 0rovided ith a continuous bare co00er ground bus+
The ground bus shall be bolted to the 0anel structure on bottom on both sides+ The contractor shall submit ith the o11er recommended grounding scheme reuired 1or 
control system+ The e;act grounding scheme shall be 1inalized during detailed
engineering+ *5+2+*C The control system and various eui0ment shall con1orm to the reuirements s0eci1ied in
the section 9 o1 T. 0ac4age hich are not s0eci1ically covered herein
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