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7/30/2019 2 Turbine and Accessories
1/18
GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
2. TURBINE AND ACCESSORIES
2.1. Guaranteed Technical Particulars
ITEM DESIGNATION UNITS VALUE REMARKS
1. General
1.1 Manufacturer/ Type designation - Voith Hydro
Pvt. Ltd. India.
1.2 Place of manufacture - India/Austria
1.3 Applicable standards - IS, DIN, BS,ASTM, ISO,
Voith Norms
Main data
2. Turbine output
2.1 Turbine rated output at rated net
head of 396.2 m 395.96 m, at rated
speed
kW 51020
2.2 Continuous overload output under
conditions at rated net head of 396.2
m 395.96 m, rated speed and less
than 100% nozzle opening.
KW 56122
2.3 Minimum output at the following
heads and at rated speed
Maximum net head of 400.70 m
400.46 m
kW 8500
Minimum net head of 387.20 m
386.96 m
kW 8500
2.4 Rated speed rpm 375
2.5 Maximum runaway speed at
following net head
at maximum net head of 400.70 m
400.46 m
rpm 657
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
at minimum net head of 387.20 m
386.96 m
rpm 636
2.6 Water discharge under rated turbine
output as per 2.1 above
m/s 14.38
2.7 Maximum leakage through needles
at maximum static head of 400.70 m
414.1 m
L/s 0.00033 At maximum static
head
2.8.1 Maximum hydraulic axial thrust
under 2 jet /4 jet/multiple 6 jet
operation
kN 10/20/30
(approx)
Non Transient
2.8.2 Maximum total load on thrust
bearing generated from turbine
kN 150 (approx)
2.9 Axial thrust at 110 % rated load
rejection
kN 34 (approx) Transient
2.10 Fly wheel effect of turbine rotating
parts
kgm 6400 Polar moment of
inertia, J
2.11 Fly wheel effect required from thegenerator kg m 203600 Polar moment of inertia, J
3. Efficiency
3.1 Turbine efficiency at rated net head
of 396.20 m 395.96 m and rated
speed
at 110 % continuous rated output % 91.10*
at 100 % continuous rated output % 91.50*
at 80 % continuous rated output % 91.66*
at 60 % continuous rated output % 91.63*
3.2 Weighted average efficiency
(according to the particular technical
specification)
% 91.50 Weighted average
efficiency is
guaranteed at water
temperature of
10C.
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
3.3 Turbine efficiency at maximum net
head of 400.70 m 400.46 m and atrated speed and at 100% continuous
rated output
% 91.51*
3.4 Turbine efficiency at minimum net
head of 387.20m 386.96 m and rated
speed and at 100 % continuous rated
output
% 91.41*
3.5Specific speed per jet of unit at rated
net head of 396.2 395.96 m with
100% nozzle opening & 110 %power
Rpm in
(m-KW)
20.533
3.6 Guaranteed minimum factor of
safety and name of the part under
worst conditions based on minimum
yield point of material
- 1.5, Runner.
3.7 Speed rise at a rated net head of
396.2 m 395.96 m
110% full load to zero % Less than 25%
Full load to zero % Less than 25%.
75% full load to zero %Less than 25%
50% full load to zero %Less than 25%
25% full load to zero %Less than 25%
3.8 Maximum water hammer pressure
rise when all 2 units at 110 % full
load simultaneously rejecting load
%Less than 15 %
of Maximum
static head
3.9 Critical speed of turbine power unit rpm822
4 Cavitation guarantee (Based on 24
months or 8000 hrs of operation)
kg0.95 kg As per page 2-5 of
Vol. 3 PART -I
(PTS)
d5. Maximum noise level at a distance
of 1 m at rated operation in turbine
pit
dB(A)90
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
6.0 Weight of finished-machined runner
complete
Kg 8300(Approx)
a) Weight and designation of
heaviest part or assembly of the
turbine as prepared for shipment
kg 10000 (approx)
Distribution
pipe segment
Heaviest turbine assembly to be
handled by powerhouse crane
during installation
kg Same as above
7.0 Dimensions
Turbine shaft diameter
Turbine shaft Length
mm
mm
560mm
3500mm
(approx)
*Single point efficiencies & corresponding needle openings and discharges are not
guaranteed. The guaranteed weighted average efficiency is hydraulic efficiency of turbine.
2.2. Informative data
ITEM DESIGNATION UNITS VALUE REMARKS
1. Turbine water discharge quantities
under rated output at rated head m/s 14.38
under maximum overload operation
at rated net head
m/s 15.88
at maximum runaway condition at
maximum net head
m/s 2.88 per nozzle
(approx)
at no-load at rated net head & rated
speed
m/s 1 (approx)
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
2. Nozzle opening
at rated speed for no- load condition
at rated head of 396.20 395.96 m
% 22 % (for 1
nozzle)
at full- load condition at net head of
396.20 395.96 m
% 67 % (approx)
at 110% load condition at net head of
396.20 395.96 m
% 81 % (approx)
at 110% load condition at maximum
net head of 396.20 400.46 m
% 78 % (approx)
3. Turbine runner
inner wheel diameter mm During detailed
engg.
outer wheel diameter mm 2762 Outer most dia of
runner
pitch circle diameter mm 2169
peripheral velocity m/sec. 42.6 (approx) At pitch circle.
number of buckets Nos. 20
width of buckets mm 645 Inner width.
material & composition and
conforming standard
- EN-10250
X3CrNiMo13-4
or equivalent
+
EN-10283
GX4CrNiMo13-
4 or equivalent
Weight Kg 8300(approx)
Preventive coating against hydro
abrasion
- Hard HVOF
coating
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
Lowering and runner removal
arrangement
- Lowering by
EOT craneRemoving with
trolly through
separate hatch.
Whether statically/dynamically
balanced in the shop
- Statically
4. Turbine Shaft
i) Material composition and
conforming standard
- ASTM A 668,
Grade-D
ii) Diameter
a) Shaft mm 560
iii) Length mm 3500(approx)
iv) Weight Tonnes 7.0(approx)
v) Type of coupling with generator
shaft and turbine runner
- Friction
Coupling
vi) No. and diameter of flange bolts No.
/mm
Friction
Coupling
vii) Material of coupling bolts, nuts,
washers at its end flanges
- 34CrNiMo6/
Equivalent
viii) Type of bolts - Suitable for
friction coupling.
ix) Provision made for shaft andrunner lifting
- During detailedengg.
Yes, Provision willbe made
5. Distributor
Type - Spiral
Material & composition and
conforming standard
- S355
J2G3/equivalent
Only for parts
under water
pressure like
segments, sickle
and flanges.
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
internal diameter of inlet mm 1200
Material thickness mm During detailed
engg.
Number of prefabricated sections of
distributor
Nos. During detailed
engg.
Quadrant dimensions of the
distributor (Outline dimensions)
mm 10500 x 11000
(Approx)
Maximum design working pressure Kg/cm2 48
Test pressure Kg/cm2 72
Velocity of water at rated conditions m/sec 12.71
Size of manhole Mm x
mm
Dia. 600
Total weight of distributor Tonnes ~23
Weight of heaviest section Tonnes ~10
Method of embedding distributor in
concrete and details of flexible
packing/ wrapping material
- During detailed
engg.
Size of man door provided in the first
section
mm X
mm
Given under
manhole above
6. Nozzle
Inlet/outlet diameter mm
/mm
700/250
Material of Spear tip and conforming
standard
- X3CrNiMo13-4
EN10250/
Equivalent
Material of Nozzle tip and
conforming standard
- EN 10250 X 3
CrNi 13 4
+QT /Equivalent
Number of jets Nos. 6
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
Range of Movement of Needle from
full close to full open
mm ~165
6.1 Brake jet
Material of brake jet and conforming
standard
- E355/iquivalent
Number Nos. 1
Diameter mm During detailed
engg.
Brake jet will be
applied at speed % 120
removed at speed % 20
7. Turbine housing
a) Top cover Outer Housing
Material and construction - IS2062 Gr. B/Equivalent
Dimension of head cover Outer
Housing
mm x
mm x
mm
Dia.7100 x
Hight. 3300
(Approx)
Thickness mm 20
Nos. of sections Nos. During detailed
engg.
Total weight Kg Approx. 15000
Means of handling top cover in the
pit
- During detailed
engg.
Elevation of highest and lowest point mm Highest -
1339.21m ,
Lowest - 1336.36
m.
Aeration pipes
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
Material - Carbon Steel
Size mm DN 900
(Approx)
Size of main pipe
connected to the
tailrace
b)Turbine pit liner
Inside diameter mm 7039
Material of construction and
conforming standard
- IS 2062 Gr. B /
Equivalent
Material thickness mm 10
Elevation of
highest point mm During detailed
engg.
lowest point mm EL 1332.27 m
8. Guide bearing
Type - Segmented - Self
Pump
No. of pads No.s 8
Diameter mm 790
Height mm ~225 Pad height
Material of bearing pads and
conforming standard
Babitted Metal,
ASTM B23Alloy 2 lining on
S235 JRG2/
Equivalent
Type, number and location of:
a) Embedded temperature
detectors4
b) Dial type thermometer2
c) Thermostats 2
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
Cooling arrangementExternal Oil
Cooler
No. of coolersNos 1
Maximum safe working pressureKg/cm2 ~6
Material of construction and
conforming standard- During detailed
engg.
Cooling water requirementlpm ~103
8.1 Maximum temperature rise abovecooling medium, measured by
embedded temperature detectors
at maximum continuous rated
operation
oC During detailed
Engineering
at most unfavourable operating
conditions as specified
oC During detailed
Engineering
8.2 Losses in the bearing at rated
operating conditions
kW 15 to 20
8.3 Oil specification grade and make - ISO VG46,
Reputed
8.4 Capability to withstand for
runaway speed with cooling water Min.15
rated speed without cooling water Min.15
runaway speed without cooling water Min 2
8.5 Capacity of bearing oil reservoir L During detailed
Engineering
9. Servomotors(deflector)
9.1 Number of servomotors Nos. 6
9.2 Full stroke mm ~130
9.3 Bore of cylinders mm ~125
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
9.4 Active volume cm3 ~1600 per
servomotor
9.5 Maximum operating pressure bar
Kg/cm2120
9.6 Minimum operating pressure bar
Kg/cm280
9.7 Max. operating energy per
servomotor
kNm 97.2-Open
115.2-Close
Approx
9.8 Min. operating energy per
servomotor
kNm 64.8-Open
76.8-Close
Approx
9.9 Material of cylinder and piston and
Conforming standard
During detailed
Engineering
9.10 Arrangement details of Lock at
servomotor
During detailed
Engineering
9.11 Type of installation Mounted onNozzle
10. Servomotor (Nozzle)
10.1 Number of servomotors Nos. As per nozzle Internal
servomotor
10.2 Full stroke mm ~165
10.3 Bore of cylinders mm ~170
10.4 Active volume cm3 ~3600 per
servomotor
10.5 Maximum operating pressure Kg/cm2 120
10.6 Minimum operating pressure Kg/cm2 80
10.7 Max. operating energy per
servomotor
kNm 216-Open
259.2-Close
Approx
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
10.8 Min. operating energy per
servomotor
kNm 144-Open
172.8-Close
Approx
10.9 Arrangement for selection of 3/4/5/6
jet operation
Yes/No Yes Shall be decided
for optimum
performance.
10.10 Material of cylinder and piston and
Conforming standard
During detailed
Engineering
10.11 Type of installation Inside the nozzle.
11. Load on thrust bearing
i) Due to turbine rotating parts Tonnes ~15
ii) Due to maximum hydraulic thrust Tonnes
a) under 3 jet operation Tonnes 1.5
b) under 4 jet operation Tonnes 2.0
c) under 5 jet operation Tonnes 2.5
d) under 6 jet operation Tonnes 3.0
12. Maximum unbalanced hydraulic
thrust during worst operating
condition(specify condition also)
Tonnes 3.4, Transient
condition
13. Turbine discharge flow-meter
i) Type Ultrasonic
ii) Make During detailed
engg.
iii) Range of flow measurement m3 /sec 0-20
iv) Accuracy % 2 to 3
14. Centralised grease lubrication system
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
i) Capacity & Rating of equipment n/a
ii) Rating of pump kW n/a
iii) Type and make of pump & C.G.L
system
n/a
iv) Capacity of grease reservoir n/a
15. Lubricating Oil
i) Grade & conforming standard ISO VG46
ii) Make IOC/Casrtol/Mob
il /Reputed
iii) Equivalent -
iv) Quantity L During Detailed
Engineering
16. Inspection Platform Runner
a) Elevation m. During Detailed
Engineering
b) Material Structural Plate
Steel
(Galvanized)
17. Hydraulic Elevator and Trolley for
Runner
Please refer S no 3
also.
i) Make and type As per Voith
design
ii) Lift m During Detailed
Engineering
iii) Height of Runner and Trolley mm During Detailed
Engineering
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
18. Instrumentation
(Following details for each type ofinstrument to be furnished)
Please refer
Control systemGTP
a) Make
b) Details of sensor
i) Make & type
ii) Principle of operation
d) Details of Indicatinginstrument/Controller
i) Make & type
ii) Analogue or Digital or LED
iii) Level switches for control
iv)Auxiliary Level Switch for
alarm
v) Output for Data acquisition
system
vi)Input voltage
Volt
vii) Special cables
Type
No. of cores Nos.
Size mm
Screening
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
e) Vibration detector
i) Make
ii) Type
iii) Locations
B&K/Mc-
monitoring
Proximity sensor
Bearing
19 Time taken
i) To load the unit from zero
to rated output
ii) To reach runaway speed
from normal speed in case
of failure of governing
system
Sec.
Sec.
During Detailed
Engineering
During Detailed
Engineering
20. Weights
20.1 Total weight of complete turbine
a) Stationary parts
b) Rotating parts
Kg
Kg
During DetailedEngineering
~ 15000
20.2 Heaviest pieces for erection
distributor Kg ~10000
Distribution pipe
segment
21. Dimensions
21.1 Maximum diameter, length and
designation of turbine part to be
removed through generator stator
bore.
mm ~Dia. 1700
Bearing Outer
Hoursing
21.2 Minimum distance between
centrelines of adjacent units
mm ~14700
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
ITEM DESIGNATION UNITS VALUE REMARKS
21.3 Recommended setting elevation m 1337.90
2.2.1. Specification of Material of Turbine
Sl. No. Component Material &
Composition
Conforming
Standards
1. Spiral Distributor S355 J2G3
/Equivalent
DIN EN 10025-3
/Equivalent
2. Runner X3CrNiMo13-4
/Equivalent +
GX4CrNiMo13-
4/Equivalent
EN 10250 /Equivalent
+ EN
10283/Equivalent
3. Nozzle Tip Insert X3CrNiMo13-4
/Equivalent
EN 10250 /Equivalent
4. Needles X3CrNiMo13-4
/Equivalent
EN 10250 /Equivalent
5. Jet Deflector G - X 4 CrNi 13 4
/Equivalent
DIN EN 10283
/Equivalent
6. Servomotor Outsourced from
reputed make
-
7. Shaft Grade D ASTM A 668
8. Linkages (for deflector kinematics) X3CrNiMo13-4
/Equivalent
EN 10250 /Equivalent
9. Pit Liner Structural Plate Steel IS 2062 Gr.B /
Equivalent
10. Bearing metal for guide bearing pads White metal lining on
Carbon steel
ASTM B23 - alloy2
lined on C10E
/Equivalent
11. Coolers
TubeTube plates
Cu-Ni 90/10 ASTM
3111 C706
ASTM/Equi
12. Any other item not given above
2.3. Recommended additional spare parts
List hereunder the spare parts which are recommended by the Bidder for purchase in
addition to the specified spare parts. The purchase of any or all of the recommended
spare parts will be at the option of HPPCL. The prices for recommended additional
spare parts for five (5) years shall therefore not be included in the bid prices.
ITEM DESCRIPTION UNIT PRICE/ UNIT
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
Note : Use additional sheet, if required
2.4. Information to be supplied together with the bid
At least the information listed hereunder shall be given by the Bidder. The Bidder
may support advantages in his design or of special technical features of his offer by
additional documents / descriptions
1. Compute pressure rise at turbine inlet under the most unfavourable conditions
(load acceptance and rejection) as requested in Technical specification.
Conditions considered as well as governor acting times to be clearly indicated in
the computations.
[Voith Reply:] See attached preliminary Transient Calculation report as
attached in bid section. 2.4.1
2. Compute turbine speed rise under conditions as above and for following load
rejection parameters.
from 110 % rated output to zero
from 100 % rated output to zero
from 75 % rated output to zero
from 50 % rated output to zero
from 25 % rated output to zero
[Voith Reply:] Detailed calculation report shall be submitted during
detailed engineering.
3. Expected flow characteristics during closing and opening of nozzles as function
of time.
[Voith Reply:] Shall be submitted during detailed engineering.
4. Expected performance curves for the maximum, rated and minimum net heads.
The curves shall also show the overload output at maximum possible nozzle
opening extending beyond the guarantee points.
[Voith Reply:] Shall be submitted during detailed engineering.
5. Provide dimensional drawing (cross section) of turbine and associated equipment
showing main dimensions.
[Voith Reply:] Please refer power unit cross section drawing attached.
6. Describe proposed shaft seal systems, preferably illustrated by schematic
diagram.
[Voith Reply:] Not applicable being Pelton turbine.
7. Applicable method and type of vibration monitoring system.
[Voith Reply:] Please refer Monitoring system write up bid clause 9.1.4.8
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GUARANTEED TECHNICAL PARTICULARS(SCHEDULE I)
8. Provide information on model or field performance tests performed on a turbine
which is hydraulically similar to the proposed turbine. Indicate at least the
following:
place of model or field testsyear of model or field tests
designed rated turbine output
rated net head
rated speed
efficiency achieved
[Voith Reply:] Shall be informed during detailed engineering.
10. Calculation sheet for dimensions of turbine, generator and power house.
[Voith Reply:] Refer power house drawing for dimensions. Calculation sheet
shall be discussed during detailed engineering.
11. Calculation sheet of various heads like, rated net head, maximum net head and
minimum net head.
[Voith Reply:] Net head values given by the employer has been followed.
12. Drawings of cross-section of machine including turbine and complete power
house.
[Voith Reply:] Attached with Bid.
Complete details of tools in accordance of technical specifications.
[Voith Reply:] Please refer the scope of supply list.
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