volume ii_lot b

© Transmission Design Branch

CEYLON ELECTRICITY BOARD SRI LANKA

Power Sector Development Transmission Project (PSDTP) - Lot B

1. Construction of 132kV Transmission Lines from

Matugama GSS to Ambalangoda GSS

Polpithimukalana to Aniyakanda GSS

Maningala to Pannala GSS

2. Replacement of Steel Ground Wire with OPGW from

Biyagama GSS to Sapugaskanda PS

Kotugoda GSS to Kelaniya GSS

Kelaniya GSS to Kolonnnawa GSS

Chilaw GSS to Kotugoda GSS

Pannipitiya GSS to Paragastota In & Out

Panadura GSS to T – Off point

EMPLOYER’S REQUIREMENTS Part 1

VOLUME II

Transmission Division Ceylon Electricity Board, P.O. Box 540, Colombo 02, Sri Lanka. June 2004 Document – Revision 2

TABLE OF CONTENT

Pages

1 Scope of Works1.1 General Description of the project 1 61.2 Plant & Equipment Including Spare Parts 7 71.3 Civil works, installation and other services 7 7

2 Documents, Drawings and Informations to be submitted with the bid

2.1 Documents,Drawings and Information to be Submitted 8 92.2 Information to be Submitted 10 11

2.2.2 Guarantees and Factors of Safety 11 132.2.3 Technical Particulars 14 262.2.4 Site Organization 27 282.2.5 Contract Dates 28 302.2.6 Departures from the Specification 31 312.2.7 Tender's Experience (New Construction) 32 332.2.8

34 342.2.9

34 342.2.10 Schedule of Major Items of Constructional Plants 34 352.2.11 Schedule of Sub Contractors 36 362.2.12 Financial Standing of the Bidder 37 372.2.13 Current Litigation 38 382.2.14 Roles of Joint Venture Member 39 39

3 Technical Specifications (Refer separate volume - Technical Specification - Transmission Line)

EMPLOYER'S REQUIREMENTS - TRANSMISSION LINE

Volume of Construction Work in Each of the Last Five YearsDetails of Other Work in Hand & Contractual Commitments

Power Sector Development Transmission Project – Lot B – Rev 2 Employer’s Requirements

Transmission Line Scope of Works Page 1

1. SCOPE OF WORKS

1.1 GENERAL DESCRIPTION OF THE PROJECT

1.1.1 132 KV DOUBLE CIRCUIT TRANSMISSION LINES

(a) 132kV double circuit three phase transmission line of, single 400mm2 ZEBRA (61/3.18mm) ACSR with one galvanized ground wire and one optical fibre ground wire (OPGW):

(i) From Mathugama to Ambalangoda -:28 km

(ii) From Polpithimukalana to Aniyakanda including π-off connection to one circuit of the Kotugoda / Kelaniya 132 kV Transmission Line at tower No: 34 A; the T-OFF connection shall be as shown in the drawing no. TD/CE/1/44/TYP-06 and subjected to the approval of the Employer’s Representative. -: 5.5 km; however the final length of the line will be confirmed at the pre-bid meeting.

(iii) From Maningala to Pannala including π -off connection to one circuit of the Kotugoda / Puttlum 132 kV Transmission Line at tower No: 43 -: 14 km.

(b) Replacement of one galvanized steel ground wire with Optical Fiber Ground Wire (OPGW) in following existing transmission lines including erection of all necessary connectors, fittings and accessories for OPGW. Directional routing facility must be available at outdoor type Patch Panels to be located at all T-Off and π-off terminations as described below :-

(i) From Biyagama Grid Substation to Sapugaskanda Power Station-: 2 km

(ii) From Kotugoda Grid Substation to Kelaniya Grid Substation.-: 19.5 km

In order to facilitate connections to Aniyakanda Grid Substation, outdoor type Patch Panel should be provided at Polpithimukalana (tower No 34A).

(iii) From Kelaniya Grid Substation to Kolonnawa Grid Substation -: 6.5 km

(iv) From Chilaw Grid Substation to Kotugoda Grid Substation -: 49 km

In order to facilitate connections to Pannala Grid Substation and Bolawatta Grid Substation, outdoor Patch Panels should be provided at Maningala (tower No. 43) and Bolawatta (tower No. 55).



(v) From Pannipitiya Grid Substation to Tower No: 82 at Paragastota in Pannipitiya Matugama 132 kV Tr. Line -: 22 km

In order to facilitate connections to Panadura and Horana Grid Substations, outdoor Patch Panels shall be provided at T-off point at tower No:47A and π-off point at tower no. 82 respectively in Pannipitiya Matugama 132 k V Transmission Line.

(vi) From Panadura Grid Substation to T-off point at Tower No:47A of Pannipitiya Matugama 132 kV Tr. Line -: 5 km.

The existing transmission lines where the ground wires to be replaced with OPGW , will be at energized (full hot line) state throughout the contract period and the Contractor will be expected to carry out the Works under live line condition (full hot line). The removed galvanized steel ground wire shall be neatly bundled and shall be delivered to the asset management stores along with the removed accessories as instructed by the Employer.

1.1.2 CLIMATE

The climatic data given are for the standard period for 1945-1975. This data has to be up dated with the latest available data.

The climate is that of a tropical region and the following meteorological information is set out for guidance only.

(A) AIR TEMPERATURES –

Records are available for the monthly mean daily maximum and daily minimum temperatures with offset from average. The averages are taken for the standard period 30 years and all shown in Table 1.1 and 1.2.



Table 1.1 – Mean Daily Maximum Temperature Month Mean daily Max. temp. / 0C Colombo Galle Katunayaka Rathmalana Kurunegala Jan. 30.9 29.0 32.1 31.1 30.8 Feb. 31.2 29.9 32.5 31.2 33.1 Mar. 31.7 30.6 32.7 31.8 34.4 Apr. 31.8 30.6 32.4 32.0 33.5 May 31.1 29.8 31.4 31.3 32.3 Jun. 30.4 29.0 30.7 30.5 31.0 Jul. 30.0 28.6 30.4 30.2 30.8 Aug. 30.0 28.4 30.5 30.1 31.0 Sep. 30.2 28.5 30.6 30.2 31.4 Oct. 30.0 28.7 30.5 30.1 31.2 Nov. 30.1 29.0 30.9 30.4 30.9 Dec. 30.3 29.1 31.2 30.6 31.1 Year Average 30.6 29.3 31.3 30.8 31.8

Table 1.2 - Mean Daily Miniimum Temperature

Month Mean daily Min. temp. / 0C Colombo Galle Katunayaka Ratmalana Kurunegala Jan. 22.3 22.8 21.6 21.7 20.7 Feb. 22.6 23.0 21.9 22.2 20.9 Mar. 23.7 23.9 23.1 23.2 22.4 Apr. 24.6 24.8 24.1 24.1 23.6 May 25.5 25.5 25.1 25.1 24.4 Jun. 25.5 25.2 25.1 25.2 24.3 Jul. 25.2 24.8 24.9 24.9 23.9 Aug. 25.1 24.7 24.8 24.9 23.8 Sep. 24.8 24.7 24.3 24.5 23.5 Oct. 24.0 24.1 23.5 23.7 22.8 Nov. 23.2 23.5 22.8 22.9 22.1 Dec. 22.8 23.1 22.4 22.4 21.7 Year Average

24.1 24.2 23.6 23.7 22.8



(B) RELATIVE HUMIDITY

Records are available giving the following.

(i) Monthly mean maximum and minimum wet bulb temperatures with offsets from average.

(ii) Extreme wet bulb temperature in each month.

(iii) Monthly means of the relative humidity obtained from dry and wet bulb readings at day and night (state I & II respectively) with offsets from average.

(iv) Monthly means of the relative humidity obtained from the minimum dry and maximum wet bulb readings with offsets from average.

The averages are taken for the standard period of 1945-1975 and are shown in table 1.3



Table 1.3 - % Relative Humidity Month % Relative Humidity

Colombo Galle Katunayaka Ratmalana Kurunegala Jan. I II

68 85

76 63 84

79 69

65

Feb. I II

69 87

73 65 86

80 69

59

Mar. I II

71 89

73 68 89

80 89

60

Apr. I II

75 91

76 71 89

80 73

69

May I II

78 88

80 76 87

81 76

73

Jun. I II

78 88

82 76 85

80 77

74

Jul. I II

78 87

82 76 85

80 76

73

Aug. I II

77 87

83 74 85

80 76

71

Sep. I II

77 87

81 75 87

81 76

71

Oct. I II

78 91

81 76 90

82 77

74

Nov. I II

77 92

79 73 91

82 77

74

Dec. I II

73 90

78 70 88

81 74

72

Year I Average II

75 86

79 72 87

81 76

70



(C) BAROMETRIC PRESSURES

Records are available for monthly means of the air pressure taken at 08.30 and 17.30 hours as mean sea level pressure. The averages are taken for the standard period of 1945 - 1975 and varies from 1007.1 mB to 1013.1mB.

(D) RAINFALL

The rainfall figures given in Table 1.4 are based on average rainfall.

Table 1.4 - Rainfall Month Rainfall (mm) Colombo Galle Katunayaka Ratmalana Kurunegala Jan. 58.2 85.1 45.8 69.3 56.4 Feb 72.8 70.5 79.8 77.3 98.8 Mar. 128.0 111.3 132.9 141.5 139.1 Apr. 245.6 206.8 241.4 246.5 264.3 May 392.4 290.4 317.6 360.6 188.3 Jun. 184.9 188.2 177.2 198.4 153.0 Jul. 121.9 163.2 99.2 132.7 111.2 Aug. 119.5 185.9 117.6 139.3 98.0 Sep. 245.4 255.8 224.1 254.9 165.3 Oct. 365.4 322.7 389.7 371.4 354.4 Nov. 314.4 321.0 313.7 314.7 318.6 Dec. 175.3 176.9 129.7 177.8 149.0 Year Average

202 198 189 207 175

(E) WIND

One to three second gusts at 145 km per hour have been recorded with a mean speed of 27km per hour over 24 hours.

(F) STORMS

The frequency of thunder-storms is high, the isokeraunic level being approximately 60 days per annum on average for the island.



1.2 PLANT & EQUIPMENT INCLUDING SPARE PARTS

Refer Plant & Equipment including Mandatory Spare Parts from outside the Employers country and Plant & Equipment including Mandatory Spare Parts from within the Employers country in Schedules. (Section 7 of the Tender)

1.3 CIVIL WORKS , INSTALLATION AND OTHER SERVICES

1.3.1 CIVIL WORKS

Refer Civil works in Schedules. (Section 7 of the Tender). 1.3.2 INSTALLATION & OTHER SERVICES

Refer installation & other services in Schedules. Employer’s Representative Accommodation Employer’s Representative Accommodation as per third para of clause 1.6 (i) of Technical Specifications Transmission Lines with three bed rooms and telephone facility shall be available within one month from the contract commencement date for following transmission lines in the locations as specified by the Employer’s Representative.

1. Matugama - Ambalangoda 132 kV Transmission Line 2. Maningala – Pannala 132 kV Transmission Line

Transport for Employer’s Representative personnel Transport for Employer’s Representative personnel should be provided as per clause 1.6 (v) of Technical Specification -Transmission Line.

- 01 No: Sedan / Saloon - 04 Nos Off Road Vehicles

Communication Facilities for Employer’s Representative Personnel Communication facilities for Employer’s Representative personnel should be provided as per clause 1.6 (viii) of Technical Specification -Transmission Line.

- Six sets


Transmission Line Documents, Drawings & Information To be Submitted with Bid Page 8

2. DOCUMENTS, DRAWINGS AND INFORMATION TO BE SUBMITTED

2.1 DOCUMENT & DRAWINGS

2.1.1 The following drawings which are of a sufficient standard to indicate clearly all manufacturing and structural details must be prepared by Contractor and accompany each Tender:-

- Outline and general arrangement for all basic types of towers or supports, with main dimensions, steel qualities, design spans, body and leg extensions. Wire clearance diagrams for each tower type, for specified swing angle.

- Details of types of foundations for the above.

- Layout of one tower earthing system.

- Conductor dead-end assembly with jumper terminals.

- Earthwire dead-end assembly with jumper terminals.

- Conductor mid-span joints.

- Earthwire mid-span joints.

- Conductor repair sleeves.

- Earthwire repair sleeves.

- Suspension insulator strings and clamps with all fittings.

- Tension insulator strings and clamps with all fittings.

- Earthwire suspension clamps and general arrangement.

- Vibration dampers.

- Conductor spacers. (Not applicable)

- Conductor final tension charts.

- All fittings of OPGW

- Earthwire /OPGW final tension charts.



- Drawings and/or other data indicating the method of tension stringing to be adopted.

Drawings need have leading dimensions only. Tower and support drawings should have provisional dimensions of main members and should indicate the necessary clearance dimensions for structures for still air and maximum swing of insulator and jumpers called for in this Specification.

The conductor and earthwire tension charts are to show final sags and tensions for a range of equivalent spans between approximately 50 % and 200 % of the basic span in still air at maximum, everyday, and minimum temperature, and the tension at minimum temperature under full wind.

The successful Contractor will be required at the time of the letting of the Contract to supply additional copies of such drawings submitted with his Tender as may be selected by the Employer’s Representative. These drawings together with copies of the drawings originally issued with the Tender documents will then be bound up either in the Contract document or in a separate folder and will be signed both by the Employer and the Contractor for purposes of identification.

2.1.2 Independent type test certificates from a Internationally recognized testing authority for,

- Conductor, Earth wire, OPGW & Accessories.

- Insulators & Fittings.

2.1.3 General bar chart of the design, manufacturing, shipping, erection and commissioning schedule clearly showing the transmission line outages.

2.1.4 Evidence of Bidder’s experience in works similar to this.

2.1.5 Evidence of Bidder’s subcontractor’s experience in works similar to those subcontracted.

2.1.6 Certificates issued by an independent International Organization to ensure compliance with the ISO 9001 : 2000 standards by Bidder and manufacturers.

2.1.7 List of standards the Bidder intends to follow, for the electrical and for the civil works.

2.1.8 Evidence of Manufacturer’s experience in manufacturing comparable type of equipment or equivalent as offered under this contract.



2.2 INFORMATION TO BE SUBMITTED

2.2.1 MANUFACTURERS AND PLACES OF MANUFACTURE, TESTING AND INSPECTION

Item Manufacturer Place of Manufacture/ Inspection

LINE CONDUCTORS Aluminium Wires - 400mm2 ACSR, Zebra

Stranding Steel Wires

- 400mm2 ACSR, Zebra

Stranding (Complete conductor)

- 400mm2 ACSR, Zebra

LINE CONDUCTOR FITTINGS Mid-Span Joints - Conductor

Repair Sleeves

Vibration Dampers

EARTH CONDUCTORS Steel Wires 7/3.25mm

Stranding Steel Wires 7/3.25mm

EARTH CONDUCTOR FITTINGS

Clamps

Tension Clamps

Mid-span Joints

OPGW / OFAC Steel wires

Optic Fiber

Complete OPGW

Optical Fiber Approach Cable (OFAC)

Fittings & Accessories



INSULATORS AND FITTINGS

132 kV Line - 400mm2 ACSR

Suspension Insulator Discs, 120kN

Jumper Suspension Insulator Discs, 70kN

Suspension Insulator Hardware

Tension Insulator Discs, 160kN

Tension Insulator Hardware

Suspension Clamps - Conductor

Tension Clamps – Conductor

STEEL TOWERS

Steel Sections

Fabrications

Galvanising

Nuts and bolts

TESTING

Insulator string

Tower

ACSR Conductors

Earth wire

OPGW

Note : Only one manufacturer should be indicated. against each item



2.2.2 GUARANTEES AND FACTORS OF SAFETY

2.2.2.1 GUARANTEES

2.2.2.1.1 CONDUCTORS AND EARTHWIRES

Conductors Units 400mm2 ZEBRA, ACSR

Ultimate Tensile Strength N

Max. AC Resistance per km at 20oC ohms

Max. DC Resistance per km at 20oC ohms

Conductor weight per km kg

Galvanised Steel Earthwire 7/3.25mm

Ultimate Tensile Strength N

Max Resistance per km at 20oC ohms

Optical Fibre Ground Wire (OPGW)

Ultimate Tensile Strength

Max Resistance per km at 20oC

2.2.2.1.2 INSULATORS AND FITTINGS

Minimum Failing Load for Complete - 400mm2 ACSR

Normal Suspension Sets

Heavy Suspension sets

Normal Tension Sets

Light duty Tension Sets

kN

kN

kN

kN

Positive Wave Impulse Withstand Voltage for-

Normal Suspension Sets

Heavy Suspension sets

Normal Tension Sets

Light duty Tension Sets

kV peak

kV peak

kV peak

kV peak



2.2.2.2 MINIMUM FACTORS OF SAFETY

Description

Factor of Safety

Conductors, Earthwires and OPGW at Maximum Working Tension based on Ultimate Strength

2.5

Conductors and Earthwires at Everyday Temperature still Air Tension, based on Ultimate Strength

4.5

Anchor Clamps and Mid-span Joints, based on Ultimate Strength of Conductor and Earthwire

0.95

Insulator Strings and Fittings at Maximum Working Tension based on Failing Load

3.0

Straight Line Supports and Foundations under Normal Working Loads

2.0

Angle, Section and Terminal Supports and Foundations under Normal Working Loads

2.5

Towers under Broken Wire Loads 1.25

Foundations under Broken Wire Loads 1.5

Crossarms of straight line support under broken wire condition 2.0

Crossarms of angle, section and terminal support under broken wire condition

2.5


Transmission Line Documents, Drawings and Information To be submitted with Bid Page 14

2.2.3 Technical Particulars

2.2.3.1 Conductors and Earthwires The bidder is required to fill the spaces in this schedule Description Unit Earthwire Conductor

7/3.25 mm ACSR 400 mm2

Nominal Aluminum Area of Conductor mm2 400

Actual Aluminum Area of Conductor mm2

Number and Diameter of Aluminum Wires mm2 54/3.18

Lay of Aluminum Wires - Inner Layer mm

- Middle Layer mm

- Outer Layer mm

Number and Diameter of Steel Wires 7/3.25 7/3.18

Lay of Outer Steel Wires mm

Overall Diameter mm

Cross-Sectional area (for stress calculation) mm2

Standard Mass per km kg

Greased Mass per km kg

Final Maximum Tension at Minimum Temperature with Maximum Wind Load

kN

Earthwire U.T.S. kN

Quality of Earthwire (Grade-BS183) 1000

Final Tension of Conductor at Everyday Temp.(Still Air)

kN

Description Equivalent Modules of Elasticity GPa

Equivalent Coefficient of Linear Expansion oC

Final Stress in Aluminum Wires at Everyday Temp.

kN

Final Stress in Steel Wires at Everyday Temp. kN

Maximum Length of Conductor on Drum m



Conductors and Earthwires (Continued....)

Description Unit Earthwire Conductor

7/3.25 mm ACSR 400 mm2

Maximum mass of greased conductor plus drum

kg

Assumed Maximum Continuous Load Current

A

Minimum drop point Temp. of inter-strand grease

oC

Maximum calculated resistance per km at 20oC

Ω

Individual Wires before stranding

Aluminum - Tensile Breaking Stress kN

Aluminum - Elongation on 250mm Length on breaking

mm

Steel - Tensile Breaking Stress kN

Steel - Elongation of 600mm Length on Breaking

mm

Elastic Limit of Material as % of Breaking strength

%



Conductors and Earthwires (Continued....)

Description Unit Earthwire Conductor

7/3.25 mm ACSR 400 mm2

Joints, Clamps, Compressors & Vibration dampers

Earthwire/Conductor Mid-Span Joint Type Number

Conductor Repair Sleeve Type Number

Earthwire/Conductor Dead End Clamp Type Number

Conductor Jumper Lug Type Number

Vibration Damper Type Number

Distance from mouth of Suspension or Tension Clamp to Vibration Damper

Distance between subsequent Vibration Dampers

Details and Type Number of Compression tools

Identification Numbers of Compressor Dies to be Supplied

Aluminum part - Conductor

Steel part - Conductor

Jumper Terminal - Conductor

Repair Sleeve - Conductor

Galvanized Steel - Earthwire



2.2.3.2 OPGW The bidder is required to fill the spaces in this schedule Description Unit Offered

Type of OPGW Conforming to standard (specify standard) Construction of OPGW 1) Overall

- Number of tubes - Tube diameter - Tube material - Number of fiber/tube - Length of each fiber per km of OPGW (km) - Filling compound - Central strength member - Heat resistant barrier - Material of fiber

2) Inner layer - Material - Number of wires - Diameter of wires - Cross-section - Lay ratio

3) Outer layer - Material - Number of wires - Diameter of wires - Cross-section - Lay ratio



Description Unit Offered

Total cross sectional area mm2

Rated outer diameter mm

Nominal weight kg/km

Minimum ultimate tensile strength kN

Maximum tensile strength for normal operation kN

DC resistance at 20 degree C ohm/km

Modulus of elasticity

- Initial kg/mm2

- Final kg/mm2

Coefficient of linear expansion /Deg. C

Method of creep compensation

Minimum bending radius

- Short term mm

- Long term mm

Strain margin

- Nominal %

- Maximum allowance %

Maximum allowable temperature and corresponding current

- continuous Deg. C/kA

- for short circuit Deg. C/kA

- for lightning stroke Deg. C/kA



A- Optical Wave Guides

Description Unit Qty

1) Number of optical fibers in OPGW no 2) Mode 3) Optimised wave length nm 4) Cut off wave length at; 5) Maximum attenuation per km at 1,550nm 6) Chromatic Dispersion at

Zero dispersion wave length: Dispersion slope (So-at o) Dispersion D ( ) in the operation window from 1,300nm to 1,575nm

7) Nominal zero dispersion wavelength nm 8) Refractive index

Core Cladding

9) Material used in Core Cladding Primary coating Jacket Coating

10) Optical attenuation corresponding to crush test impact test bend test sheave test

11) Mode field diameter and % deviation % 12) Mode field non-circularity




13) Outside (clad) diameter µm

14) Tolerance in outside (clad) diameter µm

15) Core cladding concentricity error %

16) Cladding non-circularity (%) %

17) Screening level/tensile proof test

18) Loose buffer design or Tight buffer design

19) Temporary change in attenuation at 20 degree C due to

Temperature cycling dB/km

Lightning stroke dB/km

Short circuit current dB/km

20) Splicing loss dB/splice

21) Detail of color coding for fiber identification

22) Expected life time without degradation of characteristics

years

23) Maximum allowable short time temperature of fiber

Deg.C for sec.

24) Nominal optical attenuation at 20 degree C over a period of 25 years

25) Bit error rate

26) Optical cross talks

Filling compound of OPGW

Long term effect of protection tube material on optical

wave-guide fiber performance

OPGW weight kg/km

Maximum length of OPGW in a drum km

Weight of drum with maximum length of OPGW

kg



B. Optical Fiber Approach Cable


Cable type and model number

Conforming to standard

Nominal overall diameter mm

Optical wave-guide fibers similar to fibers in OPGW yes/no

If answer to item 4. above is no, details of fibers are provided

yes/no

Number of fibers in cable

Strength member materials kN

Tensile strength

Minimum bending radius

Short term mm

Long term mm

Outside jacket

Material mm

Thickness

Crush resistance (N/cm) at temperature deg. C

Method utilized to prevent water migration

Operating temperature range deg. C

Maximum variation in optical attenuation within operating temperature in range (item 13. above);

at 1,550nm dB/km

at 1,300nm dB/km

Cable life expectancy years

Atmospheric and sunlight degradation after Flexing over 100 cycle +/- 90 with bending radius of (mm) (yes

)

Torsional strength

Impact resistance at temperature of deg.C

Co-efficient of expansion per degree C degree/m

Suitable for laying in duct/direct burial/for both

Length markers on cable in unit length of m

Rodent attack additive provided yes/no



C: Splice Enclosure


Manufacturers Name and address

Manufacturers type designation and model number

Standards

Number of splices 24

Number of cables 2

Maximum diameter of cable mm 30

Maximum pull on cable kg 40

2.2.3.3 Insulators and Fittings The bidder is required to fill the spaces in this schedule

132 kV Line Unit

Nor

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Susp

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Nor

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Low

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Inve

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Insulator Disc

Designation Disc Material (Toughened Glass or Ceramic)

Classification

Ball

& so

cket

Ball

& so

cket

Ball

& so

cket

Ball

& so

cket

Ball

& so

cket

Ball

& so

cket

Unit Number Maker Maximum Working Load kN Minimum Electro-mechanical Failing Load

kN

Outside Diameter of Unit mm Diameter of Insulator Pin mm



132 kV Line Unit

Nor

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Nor

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Low

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Tens

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Inve

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Protected Creepage Distance per Unit

mm

Minimum nominal Creepage Distance per Unit

Mm

Minimum 50 Hz Puncture Voltage per Unit

kV

Fittings

Material of Clamp

Length of Clamp

Material of spacers

Elastic Limit of Fittings

Insulator String

Number of Units in String Nos

Spacing of Unit in String mm

Minimum Failing Load of Complete Insulator Set

kN

Total Creepage Distance mm

Total Protected Creepage Distance

mm

Overall Length of Complete Suspension Set from Bottom of Conductor to Support Attachment Point

mm

Length from Tension Set Jumper Lug to Support Att h t P i t

mm

Mass of Complete Set with all Fittings

kg

Lift of Arcing Horn over Line End Unit

mm

Arcing Distance between Line End Horn and Earth End Cap

H

mm



132 kV Line Unit

Nor

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Su

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.

Hea

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Susp

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Nor

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Susp

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Low

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Dry 1-minute 50 Hz Withstand of Normal Insulator Set Complete with all Fittings

Wet 1-minute 50 Hz Withstand of Normal Insulator Set Complete with all Fittings

Dry Impulse withstand Voltage (1.2/50) of Normal Insulator set complete with all fittings

Positive wave +kV peak

Negative Wave –kV peak

kV

kV

Dry Impulse withstand Voltage (1.2/50) of Normal Insulator set as above without Arc horns

Positive wave +kV peak

Negative Wave –kV peak

kV

kV



2.2.3.4 Support Steel The bidder is required to fill the spaces in this schedule.

Description Units Required Guaranteed

Steel to ISO 630 Grade E 275 :-

Minimum upper yield stress N/mm2 275

Ultimate stress in tension members N/mm2

Ultimate stress in compression members(express as a function of L/R)

N/mm2

Steel to ISO 630 Grade 50E 355 :-

Minimum upper yield stress N/mm2 355

Ultimate stress in tension members N/mm2

Ultimate stress in compression members (express as a function of L/R)

N/mm2

Ultimate shear stress on bolts N/mm2

Ultimate bearing stress in bolts N/mm2

Ultimate tensile strength of bolts N/mm2

Minimum proof stress N/mm2 640

2.2.3.5 Particulars of Towers ZEBRA

Basic Span Length m 300

Normal Minimum Ground Clearance of Line Conductor at Maximum Temperature (including 0.3m Allowance for Conductor Creep)

m

Approximate Final Sag of Line Conductor in Still Air at Maximum Temperature for Basic Span

m

Approximate Final Sag of Line in still Air at Everyday Temperature for Basic Span

m

Approximate Final Sag of Earth Conductor in Still Air at Everyday Temperature for Basic Span

m

Maximum working Tension of Line Conductor, for Tower Design Purposes

N

Maximum working Tension of Earth Conductor, for Tower Design Purposes

N



Particulars of Towers Cont.

Type of Tower Unit TDL TD1 TD3 TD6 TDT

Approximate Height of Lowest conductor above ground at Support

m

Vertical Distance between Top and Bottom Line Conductors

m

Vertical Spacing Between Earth Conductor and Top Line Conductor

m

Approximate Total Height of Tower above Ground

m

Approximate Width of Tower Body at Attachment Level of Bottom Cross arm

m

Horizontal Distance of Insulator Attachment from Tower Centre line for each Cross arm

m

Top m

Middle m

Bottom m

Approximate Overall Dimensions of Tower Base at Ground Level

m

Transverse to line m

Parallel to line m

Approximate Mass of Complete Tower Steelwork (using Concrete Block Foundations)

kg

Approximate Extra Mass of Steel for

3m Extension kg

3m Extension kg

6m Extension kg

9m Extension kg

12m Extension kg

Total Ult. Transverse Overturning Moment at Ground level under Specified Maximum Normal Working Loads for Standard Tower

Nm

Approximate Ult. Longitudinal Overturning Moment at Ground Level under Broken Wire

Nm

Loading(Standard Tower)

Approximate Ultimate Compression Load per Leg

Approximate Ultimate Uplift Load per Leg


Transmission LineDocuments, Drawings and Information To be submitted with Bid Page 27

2.2.4 SITE ORGANIZATION

2.2.4.1 Field Staff Details

Number of Survey Parties

Estimated Total Route - km Surveyed per month

Expatriate Field Staff.

Supervising Engineers

Foremen and Other Grades

Maximum Local Labour Force

Estimated Number of Foundation Gangs

Estimated Peak Total Rate of Foundations Installed per Month

Estimated Number of Tower Erection Gangs

Estimated Peak Total Rate of Towers Erected per Month

Estimated Number of Stringing Gangs

Estimated Peak Total of Stringing Line-km per Month



2.2.4.2 Key Personnel’s Details

Designation Name of

(i) Nominee

(ii) Alternate

Summary of Qualification

Experience & Present Occupation

Year of Birth

Headquarters

Project Director

Project Manager

Engineering Design Staff

Other key Staff (Give Designation)

Site Office

Project Manager

Site Manager

Deputy Site Manager

Supervising Engineers

Construction Supervisors

Other Key Staff

The Tenderer shall list in this schedule the key personnel (including first nominee and the second choice alternate) he will employ from headquarters and from site office to direct and execute the works.

2.2.5 CONTRACT DATES

The Schedule shall be completed by the contractor and the times entered shall be binding on the contractor.

The latest date by which an order must be placed to permit completion by the specified dates shall be entered, together with the guaranteed periods in weeks from placing of order to the completion of the lines. The completion time of each of the new lines and lines of which Steel Ground Wire to be replaced with OPGW should be entered in separate sheets. Also all new lines and lines of which Steel Ground Wire to be replaced with OPGW should be considered progressing parallely.

All periods shall be in weeks, calculated from the latest date for placing the order. (In addition to the following table, Gantt chart should also be attached)



2.2.5.1 Construction of new Transmission Lines

PERIODS IN WEEKS after placing order Commence Complete Survey Works

Preliminary Survey

Profile Survey

Tower location finalization

Access for Commencement of erection

Steel Structures

Submission of Suspension Tower Design

Suspension Tower Test

Suspension Tower Manufacture

Submission of all other Tower Designs

Angle Tower Test

Angle Tower Manufacture

Conductors Manufacture

Earth Wires/OPGW Manufacture

Insulator Manufacture

Insulator and Conductor Hardware Manufacture

2.2.5.2 Replacement of Steel Ground Wire with OPGW

Period in Weeks after placing order Commence Complete

Access for Commencement of erection

OPGW Manufacturer

OPGW Hardware & accessories Manufacturer

Replacement and Stringing of OPGW

Final Sagging

Testing and Commissioning

Handing Over of removed Steel Earth Wire



PERIODS IN WEEKS after placing order Commence Complete Foundation works

Tower Erection works

Stringing of conductors and Earth wire

Final Sagging

Testing and Commissioning



2.2.6 DEPARTURES FROM THE SPECIFICATION

(To be completed by the contractor)

Clause No. Departures from the requirements of this specification with details of alternative



2.2.7 TENDERER'S EXPERIENCE (New Construction)

2.2.7.1 Construction of New 132 kV Lines

(If Tenderers wish to supply details of more than one Contract additional pages should be attached).

Tenderers are to complete this schedule giving details of supply and erection of transmission lines of the same type which they have completed or which are in the course of completion by them.

1 Name and Address of Client

Contact Person

Telephone and Facsimile number

2 Country

3 Voltage and Length of the line

4 Brief description of terrain

5 No. of circuits and No. and size of conductors

6 Type of Ground Wire

Steel – km

OPGW - km

7 Type of construction (e.g. vertical formation self supporting etc.)

8 Technical co-ordination by

9 Steelwork supplier

10 Conductor supplier

11 Installation of foundations by

12 Tower erection by

13 Stringing by

14 Site supervision by

15 Max. No of expatriate supervisors

16 Max. No of local employees

17 Date of award



18 Target completion date

19 Actual completion date

20 Name & address of consultant (if any)

2.2.7.2 Replacement of Steel round wire with OPGW

1 Name and Address of Client

Contact Person

Telephone and Facsimile number

2 Country

3 Voltage and Length of the line

4 Brief description of terrain

5 No. of circuits and No. and size of conductors

6 Type of construction (e.g. vertical formation self supporting etc.)

7 Replacement of Ground Wire with OPGW under full hot condition

Single Earth – km

Double Earth - km

8 Technical co-ordination by

9 Steelwork supplier

10 Conductor supplier

11 Installation of foundations by

12 Tower erection by

13 Stringing by

14 Site supervision by

15 Max. No of expatriate supervisors

16 Max. No of local employees

17 Date of award

18 Target completion date

19 Actual completion date

20 Name & address of consultant (if any)



2.2.8 VOLUME OF CONSTRUCTION WORK IN EACH OF THE LAST FIVE YEARS

2.2.8.1 Construction of New 132 kV Transmission Line

Year Description of the Work Volume of construction

work in US $


Year Description of the Work Volume of construction

work in US $

2.2.9 DETAILS OF OTHER WORK IN HAND & CONTRACTUAL COMMITMENTS

2.2.9.1 Construction of New 132 kV Transmission Line

DESCRIPTION OF OTHER WORK IN HAND

CONTRACTUAL COMMITMENTS


DESCRIPTION OF OTHER WORK IN HAND

CONTRACTUAL COMMITMENTS



2.2.10 SCHEDULE OF MAJOR ITEMS OF CONSTRUCTIONAL PLANT

As stated in the conditions of contract(volume I of 4) - Customs, the Employer shall pay Custom Duties not only for materials and equipment which is to form part or Contractual Plant but also all transport, machinery, erection equipment and materials, testing equipment which are necessary to construct and commission the plant including intermediate Temporary works. To enable the Employer to assess value of custom duties for the cash-flow purpose and evaluation of the final contract cost to the Employer, the Contractor is requested to fill the following Schedule. The total value of all equipment, tools etc. as mentioned above, declared by the Contractor for custom purpose if exceed the value stated hereinafter shall be at the Contractor’s own expense with reference to the payable custom duties. The Contractor shall enter any other equipment not listed in the foregoing Schedules which no tools is necessary for construction or commissioning purpose. For those items which the Contractor intends to hire locally no value shall be stated.

Des

crip

tion

(Typ

e, M

odel

, M

ake)

No.

of

Eac

h

Year

of

M

anuf

actu

re

New

or

Use

d

Ow

ned

(O)

or

Leas

ed (L

)

CIF

Val

ue

Est.

Pow

er

Rat

ing

Cap

acity

T

or m

3



2.2.11 SCHEDULE OF SUB CONTRACTORS

Item Element Approximate Name and address of Statement of

of work Value in percentage Sub Contractor Similar Works executed

The tenderer shall enter in this schedule a list of the sections and appropriate value of the work for which the purposes to use sub contractors, together with the names and addresses of the proposed sub contractors. The tenderer shall also enter a statement of similar works previously executed by the proposed sub contractors, including description, location and value of works, year completed, and name and addresses of the Employer Notwithstanding such information the tenderer, if awarded the contract, shall remain entirely and solely responsible for the satisfactory completion of the Works.



2.2.12 FINANCIAL STANDING OF THE BIDDER



2.2.13 CURRENT LITIGATION



2.2.14 ROLES OF THE JOINT VENTURE MEMBER

Name of the JV Member Role in this Contract