Tender Specifications - Bansujara Madhya Pradesh

8/18/2019 Tender Specifications - Bansujara Madhya Pradesh

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TECHNICAL SPECIFICATION Ban Sujara Major Project

GOVERNMENT OF MADHYA PRADESH

WATER RESOURCES DEPARTMENT Page 0

Government of Madhya Pradesh

Water Resoures !e"artment

#ANS$%ARA MA%OR PRO%ECT

#ANS$%ARA PRESS$RI&E! CANAL S'STEM

!ISTRICT (TI)AMGARH *M+P+,

-OL$ME(III

TECHNICAL SPECIFICATIONS

Supplying of water by constructing Balancing reservoir/Distribution chamber at RD

30900 m of Bansujara Project left ban main canal an! !elivering at farmers fiel!through pressuri"e! pipeline system for micro irrigation in the #ulturable comman!

area of $%000 hectare out of &ross comman! area of 93'0( hectare )the entire

arable area from the initial reaches to tail en! of all mains shoul! be fully covere! an!

any arable area foun! in e*cess shoul! be !roppe! at the tail en! of mains +

in!icate! in the in!e* map, -t inclu!es all activities starting from survey. investigation.

!esigning. procurement. construction. laying. installing. energi"ing. etc of pumping

system .rising main . main line. branch lines. !istribution networ .controlling an!

regulation system etc for supply of water for irrigation un!er pressure,+


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VOLUME – III

INDEX

S.No. Description P!e No.

Section - &eneral (( Section -- Survey '3 Section --- 1an! 2cuisition 4' Section -5 6*cavation an! 6arth wor 7

% Section 5 #ement #oncrete 04 Section 5- Pumps 8 otors ($ Section 5-- )2+ Pipe line '9

)B+ 2ppurtenance wors 7% )#+ -nstrumentation. 2utomation 8

1ocal S#2D2 System

99

7 Section 5--- Steel 8 -ron wors 039 Section -: Roa! ;ors 0%

0 Section :< =ransmission 1ines 8 Switchyar! 0$ Section :- Specifications for buil!ing wors 07( Section :-- >uality #ontrol &ui!elines 03 Section :--- Design an! Drawings Parameter (

' Section :- 5 Reference -nformation 4% 2nne*ure


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SE"TION # I

GENERAL

Vo$%&e # III



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Section – I

GENERAL

=he specifications containe! un!er !ifferent sections in this !ocument are for

general gui!ance, -n case of !isagreement between the specification of the

!epartment an! stan!ar! practices being followe! an! specifications not provi!e!

specifically. then relevant specifications un!er -n!ian stan!ar!s. -n!ian roa!

congress. ?manual on water supply an! treatment@ publishe! by #entral Public

Aealth an! 6nvironmental 6ngineering rgani"ation )#PA66+. ministry of urban

!evelopment. government of -n!ia an! approve! manufacturer specifications shallprevail, =he e*act specification shall be got approve! by #hief 6ngineer as per

;RD anual or as per -S stan!ar!s to meet the reuirement un!er this ten!er, -n

absence of provisions in the P;RD manual/-S co!e. these will be approve!

base! on stan!ar! engineering !esign practices/calculations base! on ne*t

nearest technical parameters as may be use! in -S co!e for similar items,



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Section – II

SURVEY



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Vo$%&e III

Section # II

Survey and Pre"aratory Wor.

=he relevant specification for irrigation projects )Covember 99+ volume


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Section – III

LAND A"'UISITION

Vo$%&e III

SE"TION # III



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Ln( Ac)%isition

)2+ 2fter the alignment an! locations of the various wor components of the

project are finali"e! by the competent authority. the turney agency will

start the process of temporary lan! acuisition for un!ergroun! pipe lines.

rising mains. gravity mains. pipe! canals 8 !isnet system up to 0,4 to ,(

ha, cha an! permanent lan! acuisition for intae well / pump houses.

B,P, tans 8 resi!ential 8 non resi!ential buil!ings reuire!, =he wor

components reuiring permanent lan! acuisition shoul! preferably be

constructe! on govt, lan! available 8 permanent acuisition of the private

lan! shoul! be minimi"e!, Private lan!s shall be purchase! at the first

instant by the contractor for which he shall be reimburse! the cost as per

actual. subject to the ceilings impose! by lan! acuisition act/purchase

policy of the State &ovt, in force at that time if any, Such lan! shall be

han!e! over to the State &ovt ,un!er provisions of the P1R# after

completion of the wor along with other assets, -n case contractor fails to

procure lan! on his own. on his reuest the State &ovt woul! procure lan!

as per the prevailing provisions of the lan! acuisition act/purchase policy

of the State &ovt, but the !elay in this process if any shall not be

attributable to the State/;RD, =he cost for preparation of 1 2 cases

)permanent an! temporary+. the cost of temporary lan! acuisition an!payment for crop compensation. if any. etc, is to be borne by the turn ey

agency,

)B+ =he turn ey agency has to prepare the proposals for private /govt,/forest

lan! an! will be responsible to get the clearance in sche!ule! time from

the &o- or &oP as the case may be, =he !epartment will only help the

turney agency in getting the clearance from the competent authority, =he

!elay in clearance of the forest lan! or other lan! will be attributable to the

turney agency, #ost for compensatory afforestation will be borne by State

&overnment but cost of preparing case an! getting clearance will be borne

by the turn ey agency,



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Section – IV

EX"AVATION AND EARTH *OR+



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Vo$%&e III

Section # IV

E,c-tion n( Ert/or0



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SE"TION # V

"e&ent "oncrete



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Vo$%&e III

Section V"oncrete *or0s



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SE"TION # VI

PUMPS AND MOTORS



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VOLUME –III

Section#VI PUMPS AND MOTORS

1 2 V.T.PUMPS

6ach 5,=, pump )Self ;ater lubricate!+ shall be of approve! mae 34oti 5 +ir$os0r 5

X4$&5 *ILO or oter stn(r( &0e s &4 6e ppro-e( 64 "ie7 en!ineer an!

suitable to the approve! !uty con!itions an! operating con!itions,

/+/+ "rcteristic "%r-es2

System hea! curves shall be furnishe! by the ten!erer, =he ten!erer shall furnish

characteristic curves of bowl assembly an! also pump after !e!ucting column losses etc,=he ten!erer shall furnish along with his ten!er the characteristic curves superimpose!

on system hea! curves for single an! multi pump operation, =he pumps shall have

stable characteristics over the entire range of woring hea!, =he pump shall be suitable

for starting against close! sluice valve i,e, shut off con!ition, =he efficiency curve shall

be reasonably flatter between !esigne! hea! range,

/+0+ "o(es n( Stn(r(s2

=he !esign. manufacture an! performance of the 5,=, pumps shall comply with all

currently applicable statues. regulations an! safety co!es applicable in the locality here

the euipment will be installe!, =he euipment shall also confirm to the latest applicable

-n!ian Stan!ar!s, -n particular the euipment shall confirm to the latest revisions of the

followingF

• -S $0 < 5ertical turbine pump for clear col!. fresh water

• -S %(0 < =echnical reuirements for roto

;here the above stan!ar!s are in conflict with the stipulation of this specification. these

specifications will superse!e

1.8 Desi!n Re)%ire&ent2

=he euipment shall be capable of !eveloping the reuire! total hea! at rate! capacity

for continuous operation, =he total hea! !ischarge curve shall be continuously rising

towar!s the shut off with highest at shut off point, Pumps shall be i!entical an! shall be



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suitable for parallel operation with eual loa! !ivision, -mpellers shall preferably be of

non over< loa!ing type, Pumps shall run smooth without un!ue noise an! vibrations,

=he magnitu!e of pea to pea vibration at slip will be limite! to 00 microns at the

bearing housing, Pumps shall be S-C&16 S=2&6/ultistage vertical turbine type an!

suitable for the service con!ition stipulate!,

1.9 :o/$ Asse&6$42

2 pump bowl shall be flange! with machine! matching of faces, =he suction bell mouth

to bowl assembly. to column an! to !ischarge hea!. i,e,. all joints shall be flange joints,

=he bowl shall be capable of withstan!ing a hy!rostatic pressure eual to twice the !uty

hea! or ,% times shut off hea! whichever is greater,

1.; S%ction :e$$ &o%t < Striner2

2 cast iron / ,S, bell mouth shall be fitte! to the suction no""le to limit the velocity, =he

suction strainer shall be of S,S. net opening area in strainer shall not be less than 3

times of entrance area of bell mouth, =he shape an! curvature of the bell mouth shall be

!esigne! to streamline the flow of bowl suction, =he thicness of bell mouth shall not be

less than 0mm,

1.= I&pe$$er2

=he impellers shall be !ynamically balance! so as not to cause any vibrations !uring

operation, =he impellers shall be close! type an! shall be ma!e in one piece an!

securely fi*e! to the stainless steel shaft. to assure accurate a!justment of each

impeller, =he water passage will be finishe! smooth by han!, Balancing holes/ !evice for

re!ucing hy!raulic thrust shall not be provi!e!,

1.> *erin! Rin!s2

;earing rings shall be renewable type, =hese shall be hel! in place by screwing against

rotation. press fit or loce! with pins. flange! an! screwe!, ;earing rings shall be

provi!e! on both casing an! impeller,

Aar!ness of wearing rings shall be less by at least %0 BAC than the impeller,



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1.? S7t2

=he !esign of the shaft shall also tae into consi!eration the critical spee! of the shaft.

which shall be at least (0G above / below the operating spee!,

=he shaft shall be properly balance! so as not to cause any vibrations !uring operation,

=he pump shaft bearings i,e, bush bearings woul! be stainless steel. water lubricate!,

6*tra long bearing shall be provi!e! for suction an! !ischarge bowls, =he har!ness of

bush bearing shall be less by at least %0 BAC than that of shaft,

1.@ "o$%&n Pipe Asse&6$42

#olumn pipes shall be of ,S, Habricate! heavy weight. flange! type each in ( m length

or less so that after complete erection of the pump/s the bottom of strainer shall be at ,%

m an! length of strainer shall be a!juste! accor!ingly, =he total length of column

assembly. bowl assembly. bell mouth an! strainer shall be !eci!e! by the bi!!er base!

on the !ata given in the ten!er,

=he column assembly length )inclu!ing column pipes. bowl. assembly. bell mouth an!

strainer+ shall be a!juste! consi!ering the pump floor levels, 2 matching piece shall be

provi!e! if reuire!, =he stiffeners shall be provi!e! to all pipe flanges, =he !ischargehea!/ tee an! column pipe !ia shall be same, =he !ischarge hea! tee incorporate full

!iameter elbow,

1.1 Line S7t2

=he shafts shall be of soli! circular section. prepare! from stainless steel machine! an!

groun! thoroughly an! couple! with muff couplings, =he shaft sections shall be provi!e!

with non


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rotating assembly is brought from stan!


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=he pump shall be provi!e! with non reversible ratchet to prevent them from rotation in

reverse !irection, Pressure gauge to each pump an! manifol! pipe shall be provi!e!,

Pressure gauge shall be %0 mm !ial si"e an! least count shall be 0,0%. each pressure

gauge shall be fitte! with restrictor no""le of brass an! &,-, Pipe an! I tube, Pressure

gauge on manifol! shall also be provi!e!, 2ll pressure gauges shall be installe! in pumphouse on wall with necessary &,-, pipe connections from manifol! to pump house, =he

pressure gauges shall be installe! at suitable height so that the rea!ing can be taen

accurately,

1.18 So$e P$te2

=he ,S, sole plate arrangement shall be provi!e! un!er the !ischarge hea! for precise

hori"ontal an! vertical alignment, =hicness of sole plate shall not be less than $0 mm,

-t shall be in!epen!ent of base plate integral with the !ischarge hea!, =he contact

surfaces of the sole plate arrangement as un!er shall be machine! for precise leveling

an! shall ensure vibration free operation of the pump,

#orner plates an! sole frame

Sole frame an! sole plate

Sole plate an! !ischarge hea!

2ll joints between machine! contact surfaces shall be with nut bolts/ tappe! stu!s/ bolts,

=he opening in the sole


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1.1; *ter L%6riction Tn0 n( Oter Accessories2

-n or!er to lubricate line shaft bearing of the pump. lubrication arrangement comprising

the following shall be provi!e!,

1ubrication tans ( Cos, interconnecte! with each other common for all pumps,

6ach lubrication tan shall be euippe! with the followingF<

• ; 1 sight gauge

• verflow lea! to sump

• Drain valve lea! o sump

&,-, pipe connection with isolating valve an! non< return valve to each pump column

assembly for lubrication, =he valve shall be locate! near the tan, =he si"e of in!ivi!ual

pipe an! valve to pump shall be '0 mm !iameter -nlet connection with solenoi! operate!valve an! suitable removable strainer by suitable tapping from common hea!er,

Hloat valve in the tan for control of overflow,

2ny other item necessarily reuire! for proper functioning,

2ll accessories reuire! for proper an! safe operation. !ismantling an! erection an!

pump shall be supplie! with heavy !uty clamps for column an! line shafts. one pair for

each pump,

1.1= Mteri$ o7 "onstr%ction2

a+ Discharge an! suction case. Bowls F #,-, -,S, (0 &r, H& (00

b+ Discharge hea!. Bell mouth F ,S, Habricate!

an! motor stool

c+ -mpeller F #H7 / #a4C

!+ -mpeller shaft F Aigh gra!e carbon steel/ stainless

steel 2-S- '0/'4

e+ #olumn pipes F heavy !uty fabricate!

f+ Shaft Sleeve F Stainless steel 2-S- '0/'4

g+ 1ine shaft F Stainless steel 2-S- '0/'4

h+ Cut bolt an! washer F Stainless Steel 2-S- '0

i+ ;earing ring F Stainless Steel

j+ 1ine shaft bearing F #utlass har! rubber / Ceoprene



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1.1> Testin! 2

2ll the pumps shall be subject to factory test in presence of 6ngineer


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3+ Strip -nspectionF

2ll the pumps after completion of its performance test an! as selecte! by the

6ngineer or -nspector at ran!om will be offere! for strip inspection an!

!imensional checing, =he manufacturer/ contactor shall submit all reuire!

!imensional !rawings of strip inspection, inimum points as un!er shall bechece!,

#on!ition of all components particularly bushes. bearings an! wearing rings

to e*amine un!ue rubbing. wear etc,

Aar!ness of cut less rubber bearing

Dynamic balancing of

)a+ -mpellers

)b+ Hle*ible coupling

#learance an! tolerances between

(a) ;earing rings

(b) -mpeller shaft an! bearings

(c) -mpeller shaft an! ey

(d) Shaft an! fle*ible coupling

(e) ey an! eyway on shaft at )!+

B) MATERIAL TEST CERTIFICATE:

aterial =est #ertificate of the various pump components shall be furnishe! by

contractor,

C) FIELD PERFORMANCE TEST:

=he test shall be carrie! out as per -SF 93$ co!e of acceptance test of pump #lass<

#. in general an! as starte! below in particular,

=he purpose of the fiel! test is not to ensure whether pump performance as regar!s

parameter i,e, hea!. !ischarge an! power etc, within acceptance limit as per -SF

93$, =he purpose is to ensure that the pump performance is generally acceptable or

otherwise, Hinal acceptance shall be as per following criteria,

i) 2s regar!s A characteristic for acceptance it shall be chece! whether

motor is not getting overloa!e! within the specifie! hea! range,



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ii+ Iltrasonic measurement shall be taen for flow, =he flow meter to be provi!e! by

contractor,

iii+ =he hea! shall be measure with calibrate! pressure gauge of accuracy G or

better ,2t least 3 pressure gauges shall be got calibrate! from two !ifferent

institutions with prior approval of the 6ngineer< in


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0+ In(%ction Motor

B.1. Desi!n Re)%ire&ents

(,,, =he motors shall generally conform to -SF 3(% or relevant euivalent internationally

approve! stan!ar!s, 2!!itionally the specific reuirements mentione! in the

following clauses shall also be met,B.B. Per7or&nce n( "rcteristics

(,(,, otors shall be capable of giving rate! output without re!uction in the e*pecte! life

span when operate! continuously un!er the following supply con!itionsF

a+5ariation in supply voltage L 0G

b+5ariation in supply freuency L %G

c+#ombine! voltage an! freuency variation ±0G

(,(,(, 15 motors shall be suitable for star< !elta starting,

B.8. Ins%$tion

(,3,, 2ny joints in the motor insulation such as at coil connections or between slot

an! win!ing sections. shall have strength euivalent to that of slot sections of

the coil, =he insulation shall be given tropical an! fungici!al treatment for

successful operation of the motor in hot. humi! an! tropical climate, =he motors

shall be provi!e! with class H insulation with temperature rise limite! to that of

class B insulation,

(,3,(, otors shall be given power house treatment, =his comprises an a!!itional

treatment to the win!ing over an! above the normal specifie! treatment, 2fter

the coils are place! in slots an! all connections have been ma!e. the entire

motor assembly shall be impregnate! by completely submerging in suitable

insulating compoun! or varnish followe! by proper baing, 2t least three such

submersions an! baing shall be applie! to the assembly,

B.9. "onstr%ction$ Fet%res

(,',, =he motor construction shall be suitable for easy !isassembly an! reassembly,

=he enclosure shall be stur!y an! shall permit easy removal of any part of the

motor for inspection an! repair,

(,',(, otors weighing more than (% g shall be provi!e! with eyebolts. lugs or other

means to facilitate safe lifting,



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(,',3, =he rotor bars shall not be insulate! in the slot portion between the iron core

laminations for suirrel cage motors,

B.;. Ter&in$ :o,

(,%,, =erminal bo*es shall be of weather proof construction !esigne! for out!oor

service, =o eliminate entry to !ust an! water. gasets of neoprene or approve!

euivalent shall be provi!e! at cover joints an! between bo* an! motor frame, -t

shall be suitable for bottom entry of cables, -t shall be capable of being turne!

through 340 !egrees in steps of 90 !egrees,

(,%,(, =he terminals shall be of the stu! type with necessary plain washers. spring

washers an! chec


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TECHNICAL SPECIFICATION Ban Sujara Major Project TE"HNI"AL DATA SHEET FOR INDU"TION MOTOR AT RA* *ATER INTA+E PUMPING

STATION

Sr. No. Description Prtic%$rs

,0 2pplication 5ertical turbine Pump 8 thers

(,0 =ype of motor Suirrel cage in!uction

3,0 ae 2s per approve! mae

',0 Co, of units,

%,0 Supply system fault level, (%0 52

4,0 Supply neutral Resistance earthe!

$,0 Co, of Phases 8 freuency 3 Phase 8 %0 A",

7,0 Supply con!ition M 0G voltage variation

M %G freuency variation

M 0G combine! voltage an! freuency

variation

9,0 Duty con!ition as per -S 3(% or

euivalent

S suitable for continuous operation

0,0 etho! of starting D1,0 6fficiency

a+ Duty point

b) Hull 1oa!

c) 0,$% 1oa!

d) 0,%0 1oa!

9% G )minimum+

9% G

9',%G

93,'G

(,0 Power Hactor

a) Hull 1oa!

b) 0,$% 1oa!

c) 0,%0 1oa!

0,74 G

0,7( G

0,$( G

3,0 Starting torue

G of full loa! torue

Sufficient starting torue to start the pump with

!elivery valve close! an! when other pumps are

running,

',0 Pull out torue

G of full loa! torue

Sufficient to bring the motor to normal spee! in

minimum time

%,0 #lass of insulation 8 temp, rise

by thermometer

#lass ?H@ but =emperature rise restricte! to that

of class ?B@ i,e, 4%N c, / $%N c,

7,0 2mbient temperature '4N c,

9,0 1ocation -n!oor

(0,0 Aa"ar!ous area !ivision C,2,

(,0 2tmosphere Aumi!. Dusty at a time

((,0 a+ =ype of #ooling

c+ Degree of protection

#2#2

-P %%

(3,0 =erminal bo* Phase segregate! terminal bo* for line an!

neutral si!e, 2n! shall be suitable for termination

of heat shrinable termination it or push on type

termination it,

(',0 6*ternal cable !etails,

a+ Co, of cores,

b+ Si"e

3

2s per single line !iagram

(%,0 Shaft orientation,

Aori"ontal / 5ertical / Aollow shaft 5ertical soli! shaft(4,0 =ype of #ouplings Hle*ible



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Sr. No. Description Prtic%$rs

($,0 =ype of bearings 2ntifriction Ball /Roller Bearing

(7,0 #olour sha!e of paint if special &rey sha!e 43( as per -S %

(9,0 Space heater for motors reuire! ('0 5. Ph,. %0A",. 2,#, for win!ing heating

30,0 =hermisters / R=DOs / reuire! for

win!ing an! bearings

Hor trip. alarming an! in!icating

3,0 Bearing temp, Detectors Reuire! for alarm / trip,

3(,0 ;in!ing connections 4 =erminals

33,0 Stan!ar! to be followe! -S 3(%. 7((%. '779. '$$(. '0(9. '49 an! other

relevant -n!ian Stan!ar! or euivalent BSS or

3E" 8>

B.> Inspection 2

=he inspection of the motor at factory site will be carrie! at by the the employer

an! or inspection agency appointe! by the employer. in the manufactureKs wor

shop, 2ll the tests as reuire! as per -S shall be carrie! out in presence of

inspecting agency, =he motor shall be !ispatche! only after issue of test

certificate by the inspecting agency for satisfactory performance of test motor, =he

inspection charges for such tests shall be born by the turn ey agency,

0+/ MATERIAL TESTING OF E'UIPMENT

=he #ontractor shall furnish the material composition certificates for all theimportant components of pump an! motors, Ran!om test certificates for raw stoc

materials an! typical test certificates for special stoc items lie bearing metaletc,. use! for the manufacture of the several components shall also be furnishe!,

0+0 'UALITY ASSURAN"E PLAN

=he uality assurance plan for all the components of the pump.controller/governor an! associate! euipments shall be furnishe! for the approvalof wner in!icating the tests at factory with customer witness points, =he sameshall be generally accor!ing to the >uality assurance Plan ,

0+1 MODEL TESTS

GENERALBefore commencement of manufacture of prototype pumps the #ontractor shallperform mo!el tests to !emonstrate that the efficiency an! other guarantees aswell as reuirements of the specifications for the performance of the pumps will bemet,

=he test shall comply with the international co!e for mo!el acceptance of hy!raulic pump -6# publication no, 93

=he place where mo!el tests woul! be con!ucte! shall be in!icate! by the Bi!!er in his Bi!, 2 team of wners 6ngineers shall be !epute! to the manufacturerOswors where the mo!el test is propose! to be con!ucte! for witnessing the mo!el

tests, =he #ontractor shall e*ten! all facilities to witness the tests,



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0+2 MODEL PUMP

2fter the awar! of contract. the #ontractor shall buil! a mo!el of the pump, =hewater passages of the mo!el shall be fully homologous with those of the prototypefrom the upstream !raft tube termination point of the pump to the !elivery valve,=he !raft tube shall be transparent to permit observation an! for taing

photographs of the verte* flow pattern an! cavitation phenomenon, =he#ontractor shall submit to the wner. !rawings. !escription covering !etails of thepropose! mo!el. testing euipment. instrumentation. an! test proce!ures for in!ivi!ual tests. metho! of interpretation an! computation of test results for approval of wner,

0+3 TESTS ON PUMP MODEL

=he final mo!el test series shall inclu!e the following tests FPump performance)efficiency+ tests un!er various con!itions, #avitation tests ,Runaway spee! test,Pressure fluctuation tests, Ay!raulic thrust test, ;icet gate/ torue test,

=he mo!el test shall simulate all possible normal operating con!itions of theprototype for the entire range of reservoir an! !elivery levels. wicet gateopenings etc,

0+4 STEP#UP FORMULA

-n !eriving proto type pump from mo!el tests !ata. step


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0+6 "HARGES FOR MODEL TEST

=he charges for the o!el test shall be !eeme! to be inclu!e! in the 6P#contract price,

0+7 MODEL A""EPTAN"E

=he #ontractor shall notify to the wner. at least one month in a!vance. therea!iness of the mo!el for witnessing the test an! to carry out the !imensionalchecs of the mo!el,

Shoul! the mo!el fail to meet the guarantees an! reuirements. it shall beoptional for the wner to con!itionally accept the mo!el an! !irect the #ontractor to mo!ify the mo!el unit to comply with the reuirements, 2ll e*penses involve!for the mo!ifications an! subseuent mo!el tests shall be borne by the#ontractor,

=he wner reserves the right to get the mo!el teste! in an in!epen!ent laboratory

or suggest the laboratory where the mo!el testing is to be con!ucte! from amongthe pre


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=he wner/Purchaser reserves the right to carry out further test to chec theperformance an! efficiency of the plant at the en! of one year, 2!justments to theplant as may be consi!ere! part of normal operating routine shall be carrie! outprior to these tests,

Shoul! the results of such repeat tests carrie! out by the wner/Purchaser in!icate that performance values !eviate from &uarantee! value or the Power

consumption e*cee!s ,0G of the guarantee! value. then the contractor shall begiven an opportunity to tae corrective measures an! carry out further test. all athis own e*pense, Shoul! the test in!icate performance an! Power consumptionvalues below the guarantee! value then a re!uction in the contract price may beissue! by the wner,

0+/1 "RITI"AL PLANT SIGMA AND PUMP HILL "HART

5alue of =homaKs #o


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contractor shall be entitle! for joint inspection to mae sure that cavitation!amage is not cause! or aggravate! by local !efects of pump shape as well as torepair !amages that might have been cause! an! tae steps to prevent futurecavitation, -f the inspection reveals that cavitation guarantee is not sustaine!. the#ontractor shall supply a full set of new impeller an! throat ring free of charge!elivere! an! installe! at site,

0+/4 TEST AT *OR+S

=he test to be con!ucte! at wors shall inclu!e the followingF

)+ 2ll the static parts of the pump shall be completely assemble! in themanufacturerKs shop an! properly match mare! an! !owele! to ensure correctassembly an! alignment at site, Dowels reuire! for insertion after erection at

site shall also be supplie!,)(+ 2ssembly of &ui!e apparatus. measurement of &ui!e vane clearances an!

recor!ings,

)3+ &ui!e vane servomotorF Pressure test. functional test. measurement of stroe.chec function of the loc in open an! close! position,

)'+ S7t Se$2 2ssembly of ring with static seal, #hec function of the static seal,)%+ Static balancing of impeller,)4+ 2ll pipes. fittings. pressure tans an! other components of the

controlling/governing system shall be teste! un!er a pressure eual to %0G of the ma*imum operating pressure maintaine! for not less than half an hour an!

the euipment shall withstan! this pressure without any signs of leaage.!istortion. an! failure,

)$+ 2ssembly of gui!e bearing housing with top cover an! !ummy shaft an!!imensional checs etc,.

)7+ Hunctional tests of all euipments wherever applicable,

)9+ -n a!!ition to the above. each mechanical an! electrical subassembly shall beteste! for proper functioning an! continuity of electrical circuits,

)0+ echanical ver spee! DeviceF #alibration of over spee! !evice,

)+ =esting of au*iliaries inclu!ing cooling water system. air compressor system.!ewatering an! !rainage system. oil pressure system. etc,

)(+ =esting of controllers/governors. both hy!ro mechanical an! electrical cubicle jointly for functional checs,

)3+ -nspection of flow metering euipment at wors for calibration. performance an!!ischarge measurement, =he wner reserves the right to be present !uring theabove tests an! also for the inspection of the euipment at the#ontractor/manufacturerOs wors/subuality 2ssurance Plan,



31/154


=he #ontractor shall furnish inspection reports in respect of assembly of mainpump an! other associate! euipments !uly mentioning the ey points. such aslimits of tolerance etc,. or such information for use/ gui!ance !uring erection/maintenance at site,

2ny other tests an! inspection that the wner consi!ers necessary to satisfyitself that the pump conforms to these specifications in performance.

wormanship. !esign an! uality of materials,

0+/5 FIELD A""EPTAN"E TESTSFie$( cceptnce tests o7 p%&p CE77icienc4 n( o%tp%t tests

=he #ontractor shall furnish in !etail the metho! propose! by him to !o the fiel!efficiency test on the pumping unit,

Hinali"ation of measurement section an! location of installing various instrumentsshall be !one after obtaining the permission of the wner,

=he layout .scheme an! !etails of the tappings etc, .Stainless steel tubing alongwith the valves an! fittings for various tappings. which are to be embe!!e! shallbe inclu!e! in the scope of supply,

=he calibration of instruments. arrangement of all reuire! instruments.arrangement of personnel for testing. supervision of fiel! tests at site etc, shall bethe responsibility of the #ontractor

2fter complete installation of the pumping units at site the units shall be teste! inaccor!ance with -6# stan!ar!,

0+/6 DRA*INGS=he contractor shall furnish 4 sets of assembly !rawings. wiring !iagrams. etc,. for approval, =he !rawings shall inclu!e but not be limite! toF)a+ 1ayout !rawings in!icating the location of various euipments,)b+ Detaile! foun!ation !rawings to withstan! hy!raulic thrust. magnitu!e of

forces !ue to unbalance! rotating parts. mass of rotating parts. etc,. in acomplete manner,

)c+ 1oa!s on foun!ation for civil structure !esigns,

)!+ Drawings showing !ucts. openings. pipe routings. etc,

)e+ Drawings showing embe!ment of pipes an! foun!ation parts,

)f+ 2ssembly an! sub


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l+ Drawings in!icating lifting arrangement of important components/ assemblieswith crane clearances,

m+ Part list of all the components with !etails vi", part numbers. uantity.reference !rawing numbers. pacing list. weight an! !imensions etc,

n+ =he assembly/sub assembly !rawings of Pump gui!e bearing. shaft glan!.-mpeller. volute casing. !raft tube. air valve. test euipmentOs for -mpeller.

metallic volute etc,.

o+ Drawing of the main cross


33/154


lubricating bearings without any e*ternal greasing at both en!s where theshaft is hori"ontally in contact, =he bearings shall be provi!e! with necessarypacing cup seals insi!e to prevent inflow of san! or other foreign matter containe! in the water an! also at the outsi!e en! to prevent water leaing,=he trunnion bearings shall be !esigne! to tae full loa! e*erte! because of ma*imum hy!raulic pressure inclu!ing the full weight of the valve !isc an!trunnion an! smooth opening/closing operations, =he bearings shall be self<lubricate! without e*ternal greasing,

=he bo!y shall be provi!e! with wel! !eposite! or separately fi*e! an!accurately bore!/ machine! stainless steel seating/contacting ring while the!isc shall be fitte! with rubber ring to have !rop tight sealing un!er all woringcon!itions,

=he valve bo!y shall incorporate the bracet feet supports suitable for anchoring against ma*imum servomotor an! hy!raulic forces, 2ll necessaryfoun!ation plates an! anchor bolts shall be provi!e!,

9, DOOR5DIS" *ITH SEALING DEVI"E2

1attice/Bi


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mil! steel fabricate! construction using reuire! thicness plates )-S (04(+,=he pipeline shall be complete with reuire! specials )5i", manholes. ben!s.connections etc,. as per reuirement+ fabricate! an! erecte! by thecontractor, Sufficient Co, of manholes 8 air valves shall be provi!e! by thebi!!er along the raising main at locations to be !eci!e! after awar! of contract,

Pipes shall be provi!e! with stiffener rings at regular intervals of every 3meters to retain the shape of pipes after fabrication, Pipes shall also beprovi!e! with anchor ro!s. thermal e*pansion joints. etc,. by the bi!!er as per the reuirement,

1ow hy!rogen electro!es conforming to 2;S


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)!+ Hor emergency closing. the oil pressure in the cylin!er shall be release!

through a solenoi! operate! valve an! !ue to the action of hy!raulic torue

an! torue acting !ue to the counter weight. the valve !isc shall close, =he

movement of the !isc shall be retar!e! by the servomotor which functions as

!ash pot thus giving total security to the installation, =he valve shall be

!esigne! to close against the ma*imum velocity attaine! by pump ,=he

operation of the valve may be carrie! out using the pressure oil systemcontemplate! for opening an! closing of gui!e vanes, Ho/e-er pre7er6$4

te 6i((er so%$( pro-i(e seprte 4(r%$ic po/er pc0 7or opertion

o7 te -$-es,

)e+ Ay!raulic power pacF =he hy!raulic power pac system shall consist of

main an! stan!by electrically !riven high pressure oil pump of vane type,

=he pump shall have sufficient capacity to supply the entire pressure oil

reuirement of the BH 5alve servomotor etc, =he pump shall be of continuous

!uty. self prime! un!er the ma*imum oil pressure, Cecessary sump tan.

control valves. non


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6. -n!ication an! alarm for valve ut of #ontrolO when oil leaage ise*cessive an! the valve !isc moves by more than % !eg, from the openposition in the closing !irection,

c. -n!ication an! alarm for valve ver velocity tripO when it acts to close the5alve,

(. 2ny abnormal con!ition,

=he limit switches shall be hermetically seale! an! shall be of repute! mae,

2ll in!ications an! alarm shall be provi!e! on the control cubicles to beinstalle! near the valve an! at control room, =he control !evices. in!icatingan! alarm !evices. starters for motors etc, shall be mounte! on the controlcubicles,

0+/7+3 PAINTING2

=he water passage shall be shot or san! blaste! an! painte! with two coatsof "inc rich epo*y primer an! three coats of epo*y paints before !ispatch,6ach coat of primer shall be of thicness not less than '0 microns an! that of

epo*y not less than 00 microns, =he outsi!e shall be provi!e! with suitablepaints,

8. STATI" EX"ITATION SYSTEM

A STATI" EX"ITAION E'UIPMENT AND AUTOMATI" VOLTAGE REGULATOR

S"OPE2

=his section covers the technical specification for provi!ing microprocessor base!e*citation system with thyristor control for Pump motors,

8.1 DES"RIPTION OF THE EX"ITATION SYSTEM

icroprocessor base! e*citation system with thyristor control shall be provi!e! tosuit the motor characteristics for each unit, =he 2# power reuire! for thee*citation shall be tappe! from the motor terminal. steppe! !own by means of rectifier transformers an! rectifie! by fully controlle! thyristor bri!ges an! then fe!to the motor fiel! thereby controlling the motor voltage input, 2ny change in themotor terminal voltage shall be sense! by an error !etector an! cause the voltageregulator to a!vance or retar! the firing angle of the thyristors thereby controllingthe fiel! e*citation of the motor, =he e*citation system for each unit shall consist of the followingF

1 Dry type e*citation transformer2 2 Set of thyristor converters of suitable numbers such that even in case of C6

bri!ge failure. the remaining bri!ges shall cater to the ma*imum continuous an!ceiling current reuirements,

3 2rrangement for initial e*citation start up4 Hiel! breaer an! fiel! !ischarge an! suppression euipments5 2utomatic voltage regulator with auto an! manual channels with all stan!ar!

limiter functions,6 Heatures for motor !ry out with the stator terminals short circuite!,7 Static energy meter in the primary circuit of e*citation transformer for

measurement of ;. 52R. a* !eman! etc,8 -nterfacing euipments for !ata communication,



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8.B EX"ITATION TRANSFORMER

=he e*citation transformer shall be three phase !ry cast resin coil typetransformer connecte! to motor terminals by segregate! phase Bus !ucts, =hetransformer shall be !esigne! an! manufacture! in accor!ance with relevantlatest stan!ar! an! shall be house! in a cubicle,

=he transformer shall be si"e! such that it supplies rate! e*citation current atrate! voltage continuously an! shall be capable of supplying ceiling current at theceiling e*citation for a short perio!, =he rate! fiel! current an! fiel! voltage shallsuit the reuirement of the otor, =he transformer shall be self coole! in!oor enclose! !ry type, Since the high voltage win!ing is connecte! !irectly to themotor terminals. full !esign consi!eration shall be given to the freuency increaserate. voltage buil! up rate. motor fault level an! insulation co


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2n R# networ shall be provi!e! across each thyristor for protection against over voltages, 2n airflow monitor relay to monitor the airflow shall be provi!e!, =hethyristor shall be of silicon controlle! type an! shall have a P-5 rating of not lessthan four times the ma*imum RS voltage of the input, During !e e*citationthyristors shall be !riven to invertor mo!e before tripping the fiel! breaer, =herate! continuous output of the e*citation system shall suit the rate! continuousinput to the otor rotor, eans shall be provi!e! to euali"e the reverse voltage,5oltage spie protection shall be provi!e!, -t shall be possible to isolate any=hyristorbri!ge while unit is in operation for any reuire! replacement for which-solators on both 2# 8 D# si!e shall be provi!e!,

8.9 FIELD FLASHING

Cecessary arrangement for initial buil!ing up of voltage shall be ma!e by usingsupply from start up euipment,

2s soon as the motor is synchroni"e! the e*citation reuirement shall be met bythe supply tappe! from the bus !uly isolating the initial start up supply,

8.; FIELD :REA+ER

2 !irect current circuit breaer shall be provi!e! in the fiel! circuit for ensuring!efinite !isconnection from the supply source an! subseuent !ischarge of energy in the fiel! circuit in the event of a fault or !isturbance,

=he fiel! breaer shall be suitable for provi!ing protection by isolating the D,#source from the fiel! in the event of severe internal fault or three


39/154


more than %G above the voltage being hel! before loa! rejection followingany loa! rejection up to %G of the rate! loa! an! shall maintain the voltagewithin this limit throughout the perio! of the motor over spee!,

c+ In!er stea!y state con!itions. for any over spee! up to %0G of normal.maintain motor voltage within plus or minus % percent of the value that thevoltage regulators were hol!ing before over spee!, 2lso un!er stea!y state

con!itions for an over spee! between %0 percent an! ma*imum permissibleover spee!. maintain motor voltage within plus or minus 0G of the value. thevoltage regulator was hol!ing before over spee!,

!+ Permit continuous stable operation of the motor un!er the control of voltageregulators. while meeting the line charging reuirements,

=he 25R shall be !esigne! with highly stable elements so that variation inambient temperature !oes not cause any !rift or change in the output level,

=he 25R shall consist of the followingF

1 5oltage an! current measuring an! !igiti"ing of signals,

2 #entral processing unit,

3 Digital firing an! control mo!ules

4 anual control with follow up facility for bump less transfer from auto to

manual mo!e 8 vice versa,

5 Pulse amplifier an! final pulse stage

6 Rotor temperature measurement

7 icro terminal

8 onitoring

1. Vo$t!e < "%rrent Mes%rin! < Di!itiin! O7 Si!n$s

=he electrical measure! values such as motor voltage. motor currentetc, shall be fe! to these mo!ules from P=s 8 #=s, Aere the values haveto be converte! to filtere! stan!ar! values,

=hese signals shall be rectifie! wherever necessary filtere! an!converte! to pulse signal for active an! reactive measurement, =hesesignals have to be !igiti"e! using analog !igital converters,

=he 25R shall also have built in freuency !epen!ent circuit. so thatwhen the motor freuency lies outsi!e a certain freuency range either !uring run up or after trip. the pulse shall be given from internal pulsemotor, Hurther when the machine is running below a particular freuencythe regulate! voltage shoul! be proportionally re!uce! with freuency,=he circuit shall be ma!e to respon! proportionally to voltage above aparticular freuency, =he freuency shall be settable between '0 an! 40AJ,

B. "ENTRAL PRO"ESSING UNIT

=he central processing unit shall accept the !igiti"e! input signals.compare with the set values an! parameters an! shall calculate on

output variable correspon!ing to fiel! voltage,8. DIGITAL FIRING AND "ONTROL MODULES



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=hese mo!ules shall convert the !igital values receive! from the centralprocessing unit to a gate pulse train, =hese pulses shall be synchroni"e!to the 2# input voltage of the thyristor converter,

9. MANUAL "HANNEL

2 separate manual control channel operating as a fiel! current regulator is to be provi!e!, =he control output shall be converte! into a stan!ar!value an! then fe! to !igital firing an! pulse generation mo!ule wheregate pulse trains are pro!uce!, =hese gate pulse trains shall be insynchronism with the input supply of thyristor converter,

=o ensure bump less transfer from automatic to manual control an! viceversa the position of pulses in both channels shoul! be i!entical, 2 pulsecomparison unit to !etect any !ifference in the position of the pulses an!to a!just the reference to eliminate any !ifference shall be provi!e!, 2balance voltmeter shall be provi!e! to ascertain bump less transfer,

2 change over between auto to manual channel an! vice versa shall beeffecte! by blocing or releasing the pulses of the correspon!ing intersme!iate pulse stage,

;. PULSE AMPLIFIER < PULSE FINAL STAGE

utput pulses from the !igital firing mo!ules )auto 8 manual+ shall beamplifie! in interme!iate pulse stage, utput of interme!iate pulse stageshall be parallele! an! fe! to pulse final stage, =here shall be separatepulse final stage for each converter, =he output of the same shall be fe!to gate circuit of thyristor via pulse transformer to provi!e galvanicisolation between power circuit an! control circuit,

2 pulse supervision unit shall !etect spurious pulses or loss of pulse onthe bus bar an! transfer control from 2I=2=-# channel to 2CI21channel,

6ach thyristor bri!ge shall have its own final pulse stage, Pulses shall bebloce! to respective bri!ges in case of

a, Hailure of one or more thyristor fuses

b, Hailure of power supply of the final stage

c, Hailure of convertor cooling fan

!, pening of input / output isolators

= ROTOR TEMERATURE MEASUREMENT

Rotor temperature measurement shall be !one through microprocessor.the stan!ar! signals of fiel! current an! fiel! voltage being obtaine!using trans!ucers an! fe! to processing unit for rotor temperaturemeasurement, =he measurement shall tae into account the brush !ropto calculate the rotor temperature, =he output shall be connecte! torecor!er an! also to the remote System,

> MI"RO TERMINAL5 MAN MA"HINE INTERFA"E

-t shall be possible to rea! the !ata/ parameters fe! to themicroprocessor using the micro terminal, Hurther the plant !epen!ant



41/154


parameters shall be ma!e accessible to the purchaser, =his shall worlie tool in trouble shooting by verifying the level of signal flow,

?. MONITORING

-t shall be possible to monitor the following,

a, 2ctual value of otor an! fiel! currents/voltages,

b, Program seuence checs

c,, 2/D 8 D/2 converters Digital input an! output mo!ules Pulse outputchecs for short circuits utput voltages of power supply mo!ules,

8.> VOLTAGE REGULATOR FEATURES

=he voltage regulator shall also be provi!e! with the following featuresF

a, "ONTROL OF MOTOR VOLTAGE

otor voltage reference value shall be set by giving logic signals,1imitations of motor voltage shall be eyboar! configurable, D5R has togive processe! signal to firing circuit to maintain the motor voltage at theset value, Reference value of the motor voltage can be set byF a, 2!justingthe voltage set point in auto channel, b, 2!justing the internal referencevalue in manual channel for soft start, c, 2!justing the fiel! current inmanual channel,

9, LOAD ANGLE LIMITER CMINIMUM EX"ITATION LIMIT+ 2n a!justable minimum e*citation limit !evice shall be e*cite! from

potential an! current transformers an! shall automatically limit the!ecrease in synchronous motor e*citation below that value which mayresult in pull out of the motor when operating un!er any specifie! operatingcon!itions, =he characteristics of the minimum e*citation limiter shallclosely match the motor capability curves,

, ROTOR "URRENT LIMITER

2n a!justable ma*imum e*citation limit function shall automatically limit thee*citation of the motor to safe value with the e*citation un!er control of theregulator, =he !evice shall have an a!justable time !elay features to permitshort time operation )subject to thermal limitation+ with ceiling e*citation,

d, STATOR "URRENT LIMITER

2n a!justable ma* stator current limit function shall automatically limitmotor stator current to its rate! value,

e, LIMITATION OF VOLTS5HERT

=his function shall prevent over flu*ing of the motor r transformer,

f, PO*ER SYSTEM STA:ILISER

Slip stabili"ation for !amping the oscillations an! improving the !ynamic

stability shall be provi!e!, -t shall be possible to cut in or cutout thisfeature,



42/154


:, SOFT STARTHacility for smooth buil! up of motor voltage to prevent overshoots of themachine terminal voltage !uring e*citation buil! up shall be provi!e!,

h, LINE DROP "OMPENSATION

Provision shall be ma!e for inclusion of transformer an! line !rop

compensation function, -t shall be a!justable over a range of 0 to %G,

;, :LO"+ING OF PULSES IN D" SHORT "IR"UIT

=he fiel! current shall be maintaine! such that when it reaches a certaina!justable threshol! value. the pulses shall be bloce! to avoi! failure of thyristors an! fuses. flashover at slip ring etc,. in case of slip ring shortcircuit,


43/154


converters shall be use!,

=he e*citation system shall be complete inclu!ing its power supply transformer connecte! to the motor terminals. circuit breaer an! all necessary !evices for in!ication. protection. alarm an! control of the euipment,

8.1B PT FUSE FAILURE DETE"TION

2 trip to manual control shall be initiate! by the !etection of failure of any of the 25R P= fuses or loss of pre


44/154


Te 7in$ p%$se to te 6ri(!e s$$ 6e 6$oc0e( on 7o$$o/in! con(itions

, =hyristor fuse fail

( 1oss of cooling,

3 2#/D# isolators open

', Power supply pulse final stage fails,

8.1; "ontro$ s$$ cn!e o-er 7ro& %to to &n%$ on 7o$$o/in!

2uto channel failure,

( Power supply to auto channel fail

3 25R P= fuses fail )motor voltage actual value failure+

8.1= "URRENT TRANSFORMERS

ne set of current transformers for / # relay in the primary si!e of the e*citationtransformer shall be provi!e! to trip the unit, ne set of #=OS shall also beprovi!e! for energy meter in the primary circuit of S66 transformer to measure the;. 52 etc,

8.1> "ONTROL INDI"ATION AND ANNUN"IATION

8.1? "ONTROLS AND INDI"ATIONS

=he following controls an! in!ications shall be provi!e! by illuminate! pushbuttons

1 5oltage raise/ lower in manual with ma* 8 min position in!ication,2 5oltage raise/ lower in auto with ma* an! min position in!ication,3 Hiel! breaer close/ open4 2uto/ anual channel C5 1ocal/ Remote selection6 Provision shall be ma!e for taing analog/ !igital signals to the remote system for

remote operations/ graphic !isplay,

8.1@ ANNUN"IATIONS

=he following annunciations shall be provi!e! with provision to tae it to remote6ither as an in!ivi!ual or as a group alarm,

• =hyristor bri!ge failure

• 2uto channel failure

• Protective changeover to manual

• Regulator power supply fail

• Hiel! flashing !elaye!

• Hiel! breaer trip coil faulty

•1imiters in action

• =hyristor fuse failure



45/154


• =hyristor cooling fan failure

• 6*citation transformer temperature high

• 6*citation transformer temperature very high

• 6*citation transformer over current !elaye!/ instantaneous,

• Rotor over voltage

• D# short circuit

• Parameters change

• Han supply change over

• Power supply to final stage failure

• 25R in test

• 2#/D# isolators open

• otor voltage actual value failure )in 2uto mo!e+

• Hiel! current actual value failure )in anual mo!e+

• #hannel


46/154


1 #hecing of !imensions 8 &2

2 easurement of win!ing resistance A5 8 15

3 Ratio tests

4 Polarity 8 vector group tests -R measurement 8 A5 tests

a, A5 3% 5 for one minute

b 15 3 5 for one minute

c, -n!uce! over voltage tests as per relevant stan!ar!s, easurement of no loa!

loss 8 full loa! loss 8impe!ance volts =ests on #=s 8 temperature !etectors.

thermistors mounte! on transformer =ests on #=s 8 temperature !etectors.

thermistors mounte! on transformer Partial !ischarge test 8 temperature rise test

on transformer,

TESTS ON AVR FIELD :REA+ER < THYRISTOR "U:I"LES

1 Dimensional checs as per approve! &2 8 mechanical assembly 8 mounting of all components

2 #hecing of wiring

3 2ll functional checs as per approve! schematics 8 functional checs of regulation 1imiters etc,

4 peration of fiel! circuit breaer at L0 G 8 < % G control voltage 8measurement of closing 8 opening times

5 -R 8 A5 tests

a, D# / 2# bus bars < 3 5 for one minute

b, '% 5 2# circuit < (,% 5 for one minute

c, ((0 5 D#. P= 8 #= circuits ,% 5 for one minute

!, 2ll other control voltage circuits 0,% 5 for one minute

6 Aeat run test of thyristor cubicles by passing rate! current 8 measurement of temperature at heat sins 8 joints

7 1ight loa! test on thyristor bri!ges,

DRA*INGS AND DATA

=he bi!!er shall furnish the following along with the bi!,

1 &eneral arrangement !rawings of S66 panels. 6*citation =ransformer

2 =ransformer 52 8 voltage ratio calculations

3 =hyristor rating calculations

4 2 brief write up of S66 8 =ransformers Hollowing !rawings an! literaturesshall be submitte! after awar! of contract,

5 Detaile! general arrangement !rawings 8 foun!ation !etails of all panels.

transformers etc,

6 Schematic !rawings of S66



47/154


7 -nter panel wiring !etails. internal wiring !etails. e*ternal cable connection!etails etc,

8 Detaile! !rawing of each mo!ule

9 Signal flow 8 logic !iagrams

10 perating an! maintenance instruction manual,

11 =est reports,

12 Scheme !rawing of protective relay with write


48/154


Aigh Aea!. high !ischarge Pumps yoti / irlosar / :ylem/;-1

Pump motors T=-/-R1S2R/BA61/2BB

Power =ransformers 2BB / #rompton / 6mco / Siemens

Sluice 5alves / Scour 5alves irlosar / -5# / 52&

Con


49/154


8fuchs. Rittmeyer. #irprotec

-nstruments 8 #ontrol #ables Delton. 2sian. Servel. =#1. =hermopa!

Receiver -n!icator/Digital panel meter asibus. Toogawa. 1ectrote. C-SA.Sai=ech. =1 -CS=S

-ntercom system Betel. Samsung. =ata. Panasonic. atri*

#on!uctivity level switchPune techtrol. SB6. rohne arshall. 6LA.C-5

Printer 6PSC. AP. #2CCC. ;-PR

ultifunction power monitor 2S-BIS. 18=. 6C6R#C. S#6#A.S6#IR6. D26

=emperature Scanner Sai=ech. asibus. Cisho. 1ectrote

2nalog Signal ultiplier 2S-BIS. Sai =ech. =1 -CS=S. C-SA

Portable vibration measuring euipment Shren 6very. -RD. S= -nstrument. =-6

Portable soun! measuring euipment #6C=6R. 6#RD. #TC&6=

2ir con!itioning 5oltas. Samsung. #arrier. Aitachi

Hurniture &o!rej. 6rgo. Heatherlite

2nti 5acuum valves -5# or euivalent

Note(

*/, In add;t;on to a9ove other re"uted vendors may a=so 9e "erm;tted >;th the a""rova=

of Ch;ef En:;neer "rov;ded the same onf;rm to the re=evant IS standards+

*0, It shou=d 9e ert;f;ed 9y the a9ove vendors that the s"ares of a== the a9ove ma.es

shou=d 9e eas;=y ava;=a9=e ;n Ind;a for re:u=ar ma;ntenane+



50/154


SE"TION # VII

Prt#A Pipe Lines

Prt#: App%rtennce /or0s

Prt#" Instr%&enttion

A%to&tion n( Loc$

S"ADA S4ste&



51/154


VOLUME#III

Section#VII

PART#A PIPE LINES

=he pipelines to be use! in !ifferent parts of this Project such as Rising ains. &ravity mains.pipe! ain canals an! Disnet shall be as mentione! in !esign criteria, 2ll pipes shoul! -Smare! only,

=he pipeline shall be !ivi!e! into sections by valves to avoi! the necessity of emptying thewhole pipeline in case of repair (in compliance with Clause No.6.16.14 of the CPH!manual), 6ach section being provi!e! with an air valve an! scouring facilities, =he nee! for scour shoul! be particularly borne in min! when layout of the pipeline an! siting of the valvesis finali"e!. as they cannot always be arrange! in the best position !ue to liely !ifficulty in!isposing of the !ischarge, =hey are necessary for scouring the mains an! hence shoul! be inproportion to the si"e of the main,

1. Mn%7ct%re n( s%pp$4 o7 M. S. Pipes 2 =he complete !esign for rising mains. gravity

main an! surge analysis shoul! be weighte! by -n!ian -nstitute of Science Bangalore or anyof the --=,

The thickness of MS/ DI Pipes in Rising mains shall e consi!e"e! onl# as pe" the

follo$ing tale %Ref IS &'()*

As per Clause 11.1 table 5 diameter of thickness of pipes

Outer Diameter

In MM

Thickness

In MM+,(-&. -,+)-+. -,0& &-,&&-) 1&''-, 11..-, 11'0 1'.( ',+. '-(

0++-. ,-&(+& 0-+)+1 (-.+.+, (-(+.,0 (-(+++( (-(++) +.+1 +-'+,, +1-+() +1-.& +,&' +0-''1. .-.



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For M.S. pipes in Gr-it4 &ins pipe tic0nesses s$$ 6e s speci7ie( 6e$o/ in te t6$e 2

For Gr-it4 Mins te tic0ness o7 MS pipes s$$ 6e c$c%$te( s per te (esi!n

re)%ire&ents n( $$o/nces stte( in IS2;?BB n( in A**A CA&ericn *ter *or0s

Assocition Mn%$ M11# For stee$ pipes. In no cse te 7in$ tic0ness rri-e( cn 6e $ess

tn s &entione( in 6o-e t6$e.

Note : 1. The thickness for intermediate diameter pipe not pro!ided in I"

code shall be interpolated bet#een the immediatel$ lo#er % hi&her

cate&or$.

'. The thickness pro!ided shall also be sub(ect to up#ard re!ision in

sur&e anal$sis and as per site conditions re)uirement. No do#n#ard

re!ision is permissible. No ne&ati!e tolerance #ill be permissible.


".N

O

.

M" pipeinner dia

*mm+

MinimumThicknessre)uired

*mm+

+ ,.. +&-.

'.. +&-.

& 1.. +&-.

1 &.. +-.

' .. +-.

, +.. +-.

0 ... ++-.

( +).. ++-.

) +(.. +.-.

+. +0.. +.-.

++ +,.. )-.

+ +'.. )-.

+& +1.. (-.

+1 +&.. (-.

+' +.. 0-.

+, ++.. ,-.

+0 +... '-.

+( ).. '-.

+) (.. 1-.. 0.. 1-.

+ ,.. &-.

'.. &-.

& 1.. &-.


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1.1. App$ic6$e stn(r(s 5 co(es

Hollowing stan!ar!s shall be referre! for manufacture of , S, pipes using Str%ct%r$Stee$ Seets, -n all cases. latest revision of the stan!ar!s / co!es shall be referre! to,-f reuirements of this specifications conflict with the reuirements of the stan!ar!s /co!es. this specification shall govern,

-SF 3%79F Seamless / electrically wel!e! steel pipes for water. gas.Sewage < specification,

-S 94 F Steel cylin!er pipe with concrete lining an! coating

-S %7(( F 1aying of electrically wel!e! steel pipes for water supply

-SF '7%3 F Recommen!e! practice for Ra!iographic inspection of fusion

wel!e! butt joints in steel pipes,

-SF '(40 F Recommen!e! practice for ultrasonic butt wel! in ferric steel,

-SF 3400 F etho!s of testing fusion wel!e! joints an! wel! mains in steelF

)Part


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1.8. E$ectro(es

=he electro!es use! for wel!ing of steel plates shall confirm to -SF 7'

1.9. "erti7icte 7or Stee$ P$tes

Steel plates shoul! confirme! to -SF $30. Dimensions for Steel Plates. Sheets. Stripsan! Hlats for &eneral 6ngineer


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TECHNICAL SPECIFICATION Ban Sujara Major Project 1.11. S&p$in! n( testin!

Sampling an! conformity criteria for various tests shall be as given in -SF '$, =he testsamples shall be cut from pipes in the final con!ition of supply, =ests for tensilestrength. percentage elongation. gui!e! ben! test. shall be carrie! out an! the testvalues shall be in conformity with those specifie! in -SF '$,

1.1B. Inspection

=he pipes rea!y in the manufacturerOs wor yar! shall be inspecte! an! teste! before!ispatch. by the employer an! or inspecting agency appointe! by the employer, 2ll thetests inclu!ing hy!raulic test shall be carrie! out on specifie! number of samples fromeach lot as specifie! in -SF '$. in presence of the inspecting agency, =he internalcement mortar lining shall be applie! to the pipes only after the inspecting agency issatisfie! regar!ing the test results. which shall be in conformity with the limitsspecifie! in -SF '$, =he contractor shall pro!uce the test certificate issue! by theinspecting agency charges for such inspection shall be born by the turn ey agency,

B. "e&ent &ortr cotin! C!%nitin! 7or e,tern$ s%r7ce o7 MS

pipes

B.1 Gener$=he outsi!e surface of the S pipes an! ben!s shall be provi!e! with reinforce!cement mortar coating for 30 mm thicness. F3 proportions. applie! by mechanical /pneumatic placement,

B.B Mteri$Rein7orce&ent=he reinforcement shall consist of BR# fabric of si"e 00 mm * 00 mm, * 3 mm,Reinforcement shall be free of oil. grease an! other contaminants that may re!uce thea!herence between the coating an! reinforcement, =he BR# fabric shall be place! inthe mi!!le thir! of the coating, ortar cover blocs shall be provi!e! to place the BR#fabric properly, Splicing for fabric reinforcement. if reuire!. shall have minimum 00

mm overlap,

B.8 "e&ent

Portlan! cement shall confirm to -S (49 / -S 70' / -S '79 an! -S 7(,

B.9 Sn(San! shall consist of inert materials having har!. strong. !urable uncoate! grainsconfirming to the reuirements of -S (4,

B.; *ter =he water use! for guniting shall be clean. colour less. an! free from injurious uantities

of organic matter. alali an! salt, =he ma*imum water cement ratio shall not e*cee!0,'%F,

B.= "e&ent &ortr =he mortar applie! by mechanical or pneumatic process shall consist 3 parts of san!an! part of cement by weight, =he water in the mi*ture shall be carefully controlle! sothat the mortar will not run. sag or segregate, =he soluble chlori!e S%r7ce preprtion



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TECHNICAL SPECIFICATION Ban Sujara Major Project =he outer surface shall be cleane! for oil grease etc, =he outer coating of re! o*i!eshall be remove! by san! blasting, =he !ust shall be remove! by compresse! air or vacuum cleaner before placement of reinforcement, =he BR# fabric reinforcement shallthen be place! with reuire! cover on the pipe surface,

B.? App$iction

=he pipe shall be supporte! on woo!en logs at the en!s to eep bottom clearance an!to facilitate easy rotation while applying the coating, =he mortar coating shall be applie!in one or more continuous applications for achieving reuire! thicness, -f applie! inmore than one course. the interval between the first an! last course shall not be morethan ( hours, =he mortar shall be projecte! at high velocity against the e*terior surfacesof the pipe with a pressure of (, to (,7 g / cm ( to pro!uce a har!. tight a!heringcoating of specifie! thicness, =he coating shall not be applie! on en!s of pipes for 00mm length, 6n!s of coating shall be uniform an! suare to the longitu!inal a*is of thepipe, =he reboun! material unuse! shall be !ispose! off within a lea! of %0m,

B.@ P$ce&ent te&pert%re=he temperature of the cement mortar mi* shall not be less than ' 0 #. nor shall the

surface temperature of the S pipe be greater than 3%0 # at the time of placement,

B.1 "%rin! 2fter the initial set of the cement mortar coating has taen place. the mortar coatingshall be cure! by the moist curing metho!, =he coating shall be ept continuously moistby intermittent or continuous spraying of water for a perio! of at least $ !ays,

B.11 De7ecti-e cotin!-f any san! pocets or porous spots occur. they shall be completely cut out an! replace!by mechanical / pneumatic placement or han! application of mortar in proportion of (parts of san! an! part of cement. by weight,

B.1B "otin! crc0s#are shall be taen to minimise the occurrence of cracs in the mortar coating,Aowever. hairline cracs nee! not be repaire!, =he cracs. if !evelope!. shall berepaire! by brushing or wiping of neat cement in to the cracs. or painting of the cracswith epo*y coating or a combination of these metho!s shall be a!opte!,

8. Trnsporttion o7 pipes 7or $4in!Aan!ling of the mortar coate! pipes while transporting those from guniting yar!. for laying an! jointing purpose. shall be !one very carefully to avoi! any !amage or !evelopment of cracs to the mortar coating, 2ny !amage! portion shall be cutout an!replace!, =he pipes shall be lai! in the trenches as early as possible after the curing

perio! is over to avoi! hair cracs in the coating !ue to temperature variations, =hee*ecution shall be programme! in such a way that the coate! pipes are lai! in thetrenches within a perio! of ma*imum month after cutting perio! is over,

9. "otin! 7or /e$(e( Joint portion

2fter the wel!ing an! testing of the wel!e! joints of S pipeline. the BR# fabricreinforcement shall be provi!e! over the joint, #ement mortar use! for the joints shall becompose! of one part of cement to not more than two parts of san!. by weight.thoroughly mi*e! with water to the consistency of thic cream, San! shall be gra!e!confirming to the reuirements of 2S= #33. e*cept that 00G shall pass a ISstan!ar! sieve number 4,



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TECHNICAL SPECIFICATION Ban Sujara Major Project utsi!e fiel! joints shall be coate! with cement mortar. retaine! by suitable water<impermeable ban!s or !iapers to bri!ge the joint an! retain the cement mortar withoutleaage, Before filling. the cement mortar space shall be flushe! with water so that thesurface of the joint to be in contact with the cement mortar will be moistene! when thecement mortar is poure!, =he joint shall be fille! with cement mortar by pouring fromone si!e only until the cement mortar reaches at least the pipe spring line on theopposite si!e. an! shall be ro!!e! with a wire or other fle*ible ro!. or vibrate! so that

the cement mortar completely fills the joint recess by moving !own one si!e of the pipe.aroun! the bottom of the pipe. an! up the opposite si!e, Pouring an! ro!!ing thecement mortar shall be continue! to allow completion of the filling of the entire jointrecess in one operation, #are shall be taen to leave no unfille! space, =he e*pose!portion of the grout at the top of the pipe shall be coate! with a sealing compoun! or covere! with burlap or moist earth for curing

8 LPE "otin! 7or e,tern$ s%r7ce o7 MS pipes

In cse te contrctor pro-i(es 8 LPE cotin! on o%ter s%r7ce o7 pipeste speci7ictions 7or tt so%$( 6e s per KAnne,%re 1 ttce( t

p!e no 1B= to 1;8 o7 tis -o$%&e.



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TECHNICAL SPECIFICATION Bansujara Major Irrigation Project

;. Testin!

;.1 A(sorption test;ater a!sorption tests shall be performe! on samples of cure! cement mortar coatingtaen from each woring shift, =he samples shall have been cure! in the same manner as the pipe, 2 test value shall consist of the average of a minimum of three samplestaen on the same !ay from the same wor shift, =he test metho! shall be inaccor!ance with 2S= #'9$. metho! 2, =he average a!sorption value for any tenconsecutive tests from a woring shift shall not e*cee! 0G an! no in!ivi!ual sampleshall have an a!sorption value e*cee!ing (G,

=ests for each woring shift shall be performe! on a !aily basis until conformance to thea!sorption reuirements has been establishe! by 0 consecutive test values note*cee!ing 0G. at which time testing may be performe! on a weely basis for eachworing shift, Daily testing shall be resume! for each woring shift whenever ana!sorption test result e*cee!s 0G, Daily testing shall be maintaine! until conformanceto the a!sorption reuirements is reestablishe! by 0 consecutive test values note*cee!ing 0 percent,

=he contractor shall maintain the recor! of the a!sorption tests an! shall submit thesame to the 6ngineer


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=.; A6rsi-e 6$st c$enin!=he surface shall be abrasive blast cleane! to achieve a white metal surface, Prior toblast cleaning. any sharp protuberances. surface laminations. wel! spatter. etc shall beremove! by through cleaning an! grin!ing, =he abrasive use! shoul! be capable of pro!ucing a minimum profile of %0.9 Preetin!=he temperature of mi*e! coating an! that of the pipe at the time of application shall not

be lower than 00

#, Preheating of the coating material. the use of inline heaters to heatthe coating materialV or heating of the pipe. fittings or specials may be use! to facilitatethe application, Aeating shall confirm to the recommen!ations of the coating materialmanufacturer,

>.; To%c %p n( repir proce(%re=he finishe! coating shall be inspecte! for !amage or re!uce! thicness, 2ny suchareas shall be repaire! by thoroughly !egreasing the surface an! abra!ing using 70gra!e abrasive papers. the abra!e! areas shall e*ten! from the e!ge of the !amage for %0$% mm on to surroun!ing soun! coating, =he prepare! surface can then be re<coate!,

>.= Fin$ c%rin!Sufficient curing perio! shall be allowe! after application of the coating as per stan!ar!s for the coating to gain reuire! strength, =he epo*y applie! pipesVspecials shall be store! for curing in accor!ance with the !urations given in thefollowing =able,

2mbient =emperature. )!eg #+ '% '0 3% 30 (% (0 % 0 $W

inimum number of!ays storage

( ' % $ $ ((

Winimum possible cure temperature

>.> E$ectric$ inspection 7or contin%it4 2fter curing. the coating shall be teste! for holi!ays accor!ing to the proce!ures an!using the voltage settings, 2ny holi!ays in!icate! by the !etector shall be got repaire!,



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>.? "otin! o7 Joints 7ter /e$(in!=he joint portion shall be cleane! thoroughly as state! above an! coate! in reuire!coats for same thicness i,e, '00 micron DH=,

?. E,c-tion 7or Pipe Line Trences

?.1. E,c-tion 7or Pipe Line Trences=he e*cavation in har! roc will have to be carrie! out either by controlle! blasting or chiseling. we!ging or by mechanical means an! the ten!ere! rate is suppose! to cover all other means,

?.B. Site "$ernce=he pipe line alignment shall be cleare! of all bushes. shrubs. roots. grass. wee!s an! if reuire! trees. coming in the alignment of pipe line in the trench wi!th portion, =he ratesfor e*cavation shall cover all such site clearance wor an! no e*tra payment will beallowe! on this account,

?.8. A$i!n&ent &r0in! 2fter the wor site is cleare! as above. pipe line alignment with reuire! trench wi!thshall be mare! on the groun! with ape* points. curves etc. as shown on the !rawings or as !irecte! by the 6ngineer


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=he e*cavation shall be taen !own to such !epths as shown in !rawings, 6*cavationfor e*tra !epth eual to the thicness of propose! pipe be!!ing shall be !one belowpipe soffit level for provi!ing be!!ing below pipe line, =he trench bottom shall bee*cavate! to proper gra!e as shown on !rawings, =he contractor shall provi!e site railsan! leveling instruments reuire! for checing the gra!e !uring e*cavation. bottombe!!ing an! pipe laying Projections in roc e*cavation shall be remove! by chipping,

=he contractor shall carryout e*tra e*cavation at the pipeline joints to be wel!e!. asreuire! )minimum 0,4 m !eep an! 0,9 m lengthwise. all aroun! the pipe+. for facilitatingproper wel!ing of the bottom joint from out si!e,=he wor of trench e*cavation shoul! be commensurate with laying an! jointing of thepipe line, -t shoul! not be !ug in a!vance for a length greater than %00 m ahea! of worof laying an! jointing of pipeline unless otherwise permitte! by the 6ngineer


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?.1. Mintennce o7 tr77ic=he wor of e*cavation an! pipe laying shall be carrie! in such a manner that it causesthe least interruption to traffic an! the roa! / street may be close! in such a manner thatit causes the least interruption to the traffic, ;here it is necessary for traffic to cross

open trenches. suitable bri!ging arrangement shall be provi!e!, ;hen the street isclose! for traffic. suitable signs in!icating that street is close! shall be place! an!necessary !etour signs for proper maintenance of traffic shall be provi!e!,

?.11. Str%ct%re protection=emporary support. a!euate protection an! maintenance of all un!ergroun! an!surface structures. !rains. sewers an! other obstructions encountere! in the progress of wor shall be furnishe! un!er the !irection of the 6ngineer


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@. Moor%& 5 Sn( :e((in! 6e$o/ Pipe$ine

-n case of har! roc an! blac cotton soil. before lowering of the S pipes intrenches. a layer of selecte! moorum. shall be provi!e! below the S pipe lineto act as be!!ing, =he be!!ing shall be compacte! properly inclu!ingreuire! watering an! the thicness of well compacte! layer shall not be lessthan %0 mm, =he be!!ing shall be provi!e! for full trench wi!th with proper gra!e as shown on !rawings,

1. Re7i$$in! te trences

1.1. Use o7 se$ecte( e,c-te( &teri$Hilling of e*cavate! material in trenches shall be commence! as soon as the joints of pipes an! specials have been teste! an! passe!, =he bacfilling material shall beproperly consoli!ate! by watering an! ramming. taing !ue care that no !amage iscause! to the pipes an! the outer coating,

Selecte! surplus spoils from e*cavate! material shall be use! as bacfill, Hill materialshall be free from clo!s. salts. sulphate. organic or other foreign material, 2ll clo!s of earth shall be broen or remove!, ;here e*cavate! material is mostly roc. the

boul!ers shall be broen into pieces not larger than %0 mm si"e. mi*e! with properlygra!e! fine material consisting of murum or earth to fill up the voi!s an! the mi*tureuse! for filling,

1.B. :c0 Fi$$in!Hor the purpose of bac


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1.8. 2ll e*cavations shall be bacfille! to the level of the original groun! surfaces unlessotherwise shown on the !rawings or or!ere! by the 6ngineer


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socet an! spigot en!s. !eformation or ben!ing, Pipes shall not be !ragge! along thegroun! or the loa!ing be! of a vehicle, Pipes shall be transporte! on flat be!vehicles/trailers, =he be! shall be smooth an! free from any sharp objects, =he pipesshall rest uniformly on the vehicle be! in their entire length !uring transportation, Pipesshall be loa!e! an! unloa!e! by suitable mechanical means without causing any!amage to the stace! pipes,

=he transportation an! han!ling of pipes shall be ma!e as per -S ((77 an! -S %7((,Aan!ling instructions of the manufacturers of the pipes shall be followe!, 2ll precautionsset out shall be taen to prevent !amage to the protective coating. !amage of the jointing surfaces or the en!s of the pipes,

;hatever metho! an! means of transportation is use!. it is essential that the pipes arecarefully place! an! firmly secure! against uncontrolle! movement !uring transportationto the satisfaction of 6ngineer


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=he S pipe en!s shall be cleane! with special care to ensure that they are free from!irt an! unwarrante! projections, =he whole of the pipes shall be place! in positionsingly an! shall be lai! true to profile an! !irection of slope in!icate! on longitu!inalsections, =he pipes shall be lai! without !eflection in a straight alignment between

ben!s an! between high an! low points, =he alignment an! levels shall be chece! bythe contractor with theo!olite,

Before pipes are jointe! they shall be thoroughly cleane! of all earth lumps. stones. or any other objects that may have entere! the interior of the pipes,

Pipes an! the relate! specials shall be lai! accor!ing to the instructions of themanufacturers an! using the tools recommen!e! by them,

#utting of pipes shall be re!uce! to a minimum reuire! to conform to the !rawings,#utting has to be ma!e with suitable tools an! accor!ing to the recommen!ations of themanufacturer without !amage to the e*ternal coating an! internal lining, =he spigot en!has to be bevele! again at the same angle as the original bevele! en!, ;hileassembling the pipes the en!s shall be brought close enough to leave a uniform gap note*cee!ing 3 mm, arginal cutting shall be !one if foun! necessary. for which no e*trapayment shall be a!missible, =here shall be no lateral !isplacement between pipe facesto be jointe!, 2fter the pipes are properly assemble! an! chece! for the correct linean! level. tac wel!ing for the pipe joint shall be !one, Hinal wel!ing of the joint frominsi!e an! outsi!e shall be !one thereafter,

11.;.1.B. Strps;henever the pipe laying wor procee!s from two en!s an! if gap remaine! betweentwo faces is less than 30 cm. such gap shall be bri!ge! by provi!ing a strap, Strap shallalso be provi!e! !uring fi*ing of e*pansion joint for above groun! pipeline, Such strapshall be fabricate! on site by cutting a piece from the pipe, =his piece shall be splitlongitu!inally an! steppe! over the gap, 2 minimum overlap of 7 cm shall be provi!e!

on both the pipe en!s to be connecte!, =he strap shall be wel!e! with pipe en!s withreuire! number of fillet wells from insi!e an! outsi!e, =he gap between en!s of thestrap shall be butt wel!e! longitu!inally,

11.;.1.8. Distnce pieceDistance piece shall be provi!e! when the gap between pipe faces to be jointe! is more

than 30 cm, Distance pieces shall be cut from pipe pieces for reuire! length either on

site or in factory, Payment shall be as per the laying an! jointing of pipeline item,

2ll specials lie ben!s. tees etc, an! appurtenances lie sluice or butterfly valves etc,shall be lai! in synchroni"ation with the pipes, =he #ontractor has to ensure that thespecials an! accessories are rea!y in time to be installe! together with the pipes,

2t the en! of each woring !ay an! whenever wor is interrupte! for any perio! of time.the free en!s of lai! pipes shall be protecte! against the entry of !irt or other foreignmatter by means of approve! plugs or en! caps,

;hen pipe laying is not in progress. the open en!s of installe! pipe shall be close! byapprove! means to prevent entrance of trench water an! !irt into the line, Co pipe shallbe lai! in wet trench con!itions that preclu!e proper be!!ing. or when. in the opinion of the 6ngineer


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11.;.B. L4in! o7 pipes 6o-e !ro%n( # in 7orest re on$4

11.;.B.1 Gener$ 2bove groun! pipe line shall have epo*y coating on inner an! outer surfaces,1aying of pipeline shall be starte! only after sufficient number of chairs / pe!estals havebeen caste! as per !esign which shelle! not be less than 0,4 m in wi!th to reuire!level an! have achieve! their final strength inclu!ing fi*ing of the bearing plates an!roller bearings,

=he contractor shall lay the pipeline to the e*act line an! level as shown on the!rawings. or as !irecte! by the 6ngineer


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&auging shall be !one before rectification of any !efective wel!ing wherever necessaryan! as !irecte! by 6ngineer.8. Tree#pnne( p$%!s=ree


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11.>.9. Non#(estr%cti-e tests

Con

11.?. Proce(%re on 7i$%re o7 test speci&en-f the test specimen fails in either tensile or bent test or in both. two a!!itional testspecimens shall be taen out from the section an! shall be teste! again for both thetests, -f any one of them fails. e*tensive gouging an! repairing shall

Documents

Tender Specifications - Bansujara Madhya Pradesh