part i tender procedures section 1 introduction - tender summary.… · transformation journey,...

Supply, Delivery, Installation, and Commissioning of ADSS Fibre

Optic Cable (With 25KV Anti-Tracking) for Kemantan 275KV to

Paradom 33kV Substation (Kemantan - Oya 275kV Transmission

Line)

TENDER DOCUMENTS: SARAWAK ENERGY REF. NO. TCOMM 02/17

PART I – TENDER PROCEDURES

SECTION 1 – INTRODUCTION

This Introduction should be read in conjunction with Tender Appendix A [Description /

Specification of Goods] set out in Part II, Section 2 of the Tender Documents.

Part I, Section 1 – Introduction

Tender for Supply, Delivery, Installation, Testing and Commissioning of ADSS Fibre Optic Cable for Kemantan

275KV substation to Paradom 33kV substation (Kem-Oya 275kV Transmission Line) (Sarawak Energy Ref.

No.TCOMM 02/17) 1

INTRODUCTION

SARAWAK ENERGY IS WHOLLY-OWNED BY THE STATE GOVERNMENT OF SARAWAK AND IS

RESPONSIBLE FOR THE GENERATION, TRANSMISSION AND DISTRIBUTION OF ELECTRICITY TO

INDUSTRIAL AND RESIDENTIAL CUSTOMERS WITHIN SARAWAK.

SARAWAK ENERGY HAS A PROUD HISTORY OF MORE THAN 70 YEARS OF SERVICE TO THE

SARAWAK COMMUNITY AND NOW PROVIDES ELECTRICITY TO MORE THAN 500,000 ACCOUNT

HOLDERS.

IN RECENT YEARS, SARAWAK ENERGY HAS MADE STRONG PROGRESS ON AN EXCITING

TRANSFORMATION JOURNEY, FOCUSED ON HARNESSING THE STATE’S ABUNDANT ENERGY

RESOURCES IN HYDROPOWER, NATURAL GAS AND COAL TO CREATE NEW OPPORTUNITIES FOR THE

SARAWAK COMMUNITY. WITH FIRM PLANS FOR FURTHER RAPID GROWTH, SARAWAK ENERGY IS

ON TRACK TO BECOME THE LEADING PRODUCER OF RENEWABLE ENERGY IN SOUTH EAST ASIA.

BY SUPPORTING THE STATE GOVERNMENT’S SARAWAK CORRIDOR OF RENEWABLE

ENERGY OR SCORE PROGRAM, SARAWAK ENERGY IS HELPING OUR COMMUNITY REACH THE

GOAL OF BECOMING A HIGH-INCOME STATE BY 2020.




No.TCOMM 02/17)

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DESCRIPTION/SCOPE OF WORK

1.0 GENERAL

This section specifies Syarikat SESCo Berhad’s requirements for Supply, Delivery,

Installation, and Commissioning of 24 Cores ADSS Fibre Optic Cable (With 25KV Anti-

Tracking) for Kemantan 275KV substation to Paradom 33kV substation (Kemantan-Oya

275kV Transmission line) in accordance with specification and to the satisfaction of the

Engineer.

The Overhead fibre optic cable shall be laid/install on overhead Transmission Tower from

Kemantan 275KV substation to Paradom 33kV substation.

The optical fibre for the cables shall be conventional single mode fibre for use at 1310nm

and 1550nm wavelengths. In addition, the ADSS cable shall have anti-tracking properties

up to 25KV.

The fibre optic cables used shall be 24 cores ADSS cable (gantry to gantry) and OPUG

Corrugated Steel Tape Armoured Cable (gantry to termination box at both substations).

The fibre optic cable shall have an expected life span of twenty-five (25) years and

warranted for a period of twenty-four (24) months from the date of Completion of Works.

During warranty, any replacement/repair against any defective material or bad

workmanship, all materials and labour cost for the said replacement and maintenance costs

shall be borne by successful tenderer.

Estimated distance for fibre optic cable need to be confirmed by contractor during site

survey.

All the wayleave expenses incurred shall be included in this tender when carry out the

works.

The Tenderer shall propose according to the quantities required for all necessary accessories

such as connectors, weatherproof optical fibre splice enclosure, termination/connection

box, clamps and mounting hardware, etc.

The Optical Termination Box (OTB wall mounted type) which is suitable for incoming and

outgoing fibre optic cables shall be installed at Kemantan 275kV Substation and Paradom

33kV Substation and shall be located nearby Communication Fibre Optic Equipment area.

They should be installed at a height of 4 feet from floor level to ensure easy access for

connection and maintenance.

OTB termination connection (patch panel) shall be suitable for single mode fibre connection

with FC/PC connectors.

Trenching, laying and backfilling inclusive road reinstatement of paved and unpaved area if

any must be carried out according to Syarikat Sesco Berhad Standard Cable Trench.




No.TCOMM 02/17)

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The armoured loose tube direct buried fibre optic cable shall be direct buried and protected

by bricks in unpaved area.

Splicing shall be carried out to for the followings:-

· ADSS–ADSS splicing inclusive of splice enclosure and accessories at the 275kV

Transmission Towers

· ADSS–OPUG inclusive of splice enclosure and accessories at the Switchyard Kemantan

275kV substation and Paradom 33kV Substation.

· OPUG–Optical termination box at Kemantan 275kV Substation and Paradom 33kV

Substation shall be spliced up to the Optical Distribution Box at the Communication

room at the 275kV Substations.

Suitable length cable looping shall be required for future purposes.

2.0 The Scope of Work shall comprise of the following:-

i) To Supply, Delivery, Trenching, Laying, Installation, Backfilling, Mounting, &

Commissioning of 24 Cores Fibre Optic Cable (with 25KV Anti-Tracking) for Kemantan

275KV Substation to Paradom 33KV Substation.

· Approximate Overall Distance: 400m OPUG Corrugated Steel Tape Armoured Cable –

From gantry (Kemantan 275kV s/s) to termination box at Kemantan 275kV S/S

Communication Room.

· Approximate Overall Distance: 27.0km ADSS Cable – From new EHV Tower No.1

(Kemantan 275KV sub) to EHV Tower No. 076 (new) towards Paradom 33kV

substation.

· Approximate Overall Distance: 1.5km OPUG Corrugated Steel Tape Armoured Cable –

from EHV Tower No.076 (new) to termination box at Paradom 33KV S/S

Communication Room and include planting of poles from LT Pole No.2 to substation.

Estimated distance for fibre optic cable need to be confirmed by contractor during site

survey.

ii) Supply and Delivery of 1 drum 4km length of 24 cores ADSS cable (suitable for all tower

span length for spare) and 1 drum 3km length of 24 cores OPUG Corrugated Steel Tape

Armoured Cable (the balance of the cable shall be returned to SEB store as spare)

iii) Inclusive Factory Acceptance Test (FAT) for two (2) Sarawak Energy Berhad’s

Representative for the Fibre Optic Cable at the manufacturing base (exclusive of air fares

and accommodation).

Please refer to Part II, Section 3- Appendix 3




No.TCOMM 02/17)

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iv) Carry out works on splicing for ADSS – ADSS cable inclusive of supply of splice

enclosure and accessories at the 275kV towers between Kemantan 275KV Substation to

Paradom 275kV Substation.

v) Fibre Optic Cable (OPUG Corrugated Steel Tape Armoured Cable) shall be terminated to

the Optical Distribution Box at the Communication rooms for Kemantan 275KV sub and

Paradom 33KV sub. The terminal shall be suitable for the FC type connectors.

2.1 Contractor Responsibility

The Contractor shall provide the detail works schedule at least 2 weeks before commencing

the project.

The Contractor shall use the following cables throughout the works:-

(a) ADSS Fibre Optic Cable shall be used for Overhead (O/H) installation.

(b) ADSS Fibre Optic Cable should be suitable for all type of tower span length (up to 500m,

Please refer to Appendix 2)

(c) OPUG Corrugated Steel Tape Armoured Cable shall be used for Underground (U/G)

installation, between termination tower/gantry to Kemantan 275kV Substation and

termination tower/Gantry to Paradom 33kV Substation.

The above mentioned cable drums shall be tested on-site before any installations to be

carried out.

The above cable shall be laid and installed within the cable route plan or any proposal by

Engineer In-charge mainly laying cable inside substation area such as install support angel,

cable tray, tied to existing cable tray and etc., if necessary.

The Supplier shall be required to perform a periodic check (every 6 Months) on the

performance of the fibre optic cable within the warranty period.

Supplier must provide test report from the cable manufactures done by independent party

or recognized test labs eg.KEMA, regarding the testing of the 25KV Anti-Tracking

properties with reports and certifications. A copy of the test results shall be submitted

with the tender submission.




No.TCOMM 02/17)

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3.0 DESIGN AND CONSTRUCTION OF ALL DIELECTRIC SELF-SUPPORTING CABLE

General

The self-supporting optical fibre cable must be in accordance with IEEE P1222 Standard for

All Dielectric Self-Supporting Fibre Optic Cable (ADSS) for use on overhead utility lines.

Self-supporting optical cables should be of non-metallic construction suitable for installation

on 33kV and 275kV towers. The cable shall be of loose buffer tube design. The tensile

strength of the cable shall be solely borne by the cable strength member and shall be

adequate to meet the tensions expected during installation and normal everyday conditions.

Allowance for creep shall be given consideration when determining the sag and tension of

the cable. Tenderers are required to specify the maximum self-supporting span length the

offered optical fibre cable can be erected without compromise on the ground clearance and

strain requirement.

Each fibre shall be identified by a color code scheme, which shall be permanent and not

degrade under normal operational environment.

3.1.1 Cable length

Recommend cable length per cable drum is 4.000km.

The outer protective sheath for non-metallic optical fibre cables shall be made of flexible

dielectric material, which is non-tracking when subjected to electrical stress and long-term

environmental pollution.

The optical fibre cable sheath shall be resistant to attacks by birds, squirrels and rodents.

The cable sheath shall not be brightly colored. Black of dark gray colored sheath is

recommended. The sheath shall also be shotgun resistant.

The outer sheath of the optical fibre optic shall be able to withstand long exposure to UV

radiation and resistant to fungus growth. It shall conform to IEEE P1222.

The cable shall be embossed with Syarikat SESCo Berhad name inclusive cable length

marking.

Cable length distance marker for every 2 meters.




No.TCOMM 02/17)

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3.1.2 Temperature

In order to give the optical fibres adequate heat resistance, the inner and outer layer of

optical fibre shall be coated with heatproof materials.

Under cyclic temperature test in accordance to IEC 794-1-F1, the fibre shall maintain

mechanical and optical integrity with the attenuation increase not more than 0.01 dB/km.

3.1.3 Resistance to Water Penetration

The core interstices shall be compound or jelly filled to prevent ingress of water and

molecular hydrogen permeation. Resistance to water penetration shall be performed in

accordance with IEEE P1222.

3.1.4 Tensile Strength

The tensile strength of the cable shall be such that the safety factor on the Ultimate Tensile

Strength shall not be less than two and half (2.5) times over the Maximum Working Tension.

There shall be no fibre strain when the cable is tensioned up to its Maximum Working

Tension.

3.1.5 Repeated Bending

The cable parts including the fibre shall bear no physical damage when subjected to multiple

bending at its minimum bending radius with an axial tension equal to its Maximum Working

Tension.

3.1.6 Aeolian Vibration

The optical cable when tested in accordance to the Aeolian vibration test defined by IEEE

P1222 shall show no substantial signs of wear at the end of the test period. The maximum

permissible variation in the attenuation shall not exceed +0.1 dB/km.

3.1.7 Cable Diameter

The Contractor shall specify the overall diameter for 24 cores fibre.




No.TCOMM 02/17)

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3.1.8 Cross-Sectional Diagram of the Cable

The Contractor shall provide a cross-sectional for cable size indicating the various elements,

which form the complete cable with dimensions. Cable masses (kg/km) and its maximum

pulling force during installation for each cable size shall also be indicated.

3.1.9 Electrical Tests

Electrical tests shall be performed in compliance with IEEE P1222. The cable shall be tested

for tracking and erosion under combined mechanical and electrical stress in salt fog

conditions.

3.2.0 Span Length

The Tenderer shall offer suitable span length. The Tenderer shall specify the medium and

maximum span length of the ADSS cable offered.

4.0 DESIGN AND CONSTRUCTION OF OPUG FIBRE CABLE

Standards and Regulations

4.1.1 Performance Standards

The OPUG optic fibre cables shall be in accordance with ITU-T Recommendation G.652

unless stated otherwise.

4.1.2 Alternative Standards

If the Contractor wishes to base his Tender on standards or codes other than those specified

e.g. such alternative standards appropriated to the country of manufacture, tenderer may

do so provided that he submits with his Tender complete with data about the standards or

codes applied and confirms in his Tender that such standards or codes meet, as a minimum,

the requirements of the designated standards. The Contractor shall submit with and as a

part of his tender a tabulated list of the differences between the standards or codes applied

and those designated herein.

The decision to accept such alternative standards or codes shall rest with the Engineer.

4.1.3 Measurement and Weight System

The intentional SI-System of measures and weights shall be used for documents,

correspondence and drawings.

On drawings and lists of printed pamphlets where other units have been used, the metric

equivalent shall be marked in addition.

4.1.4 Fibre Optic Cable Core

The fibre optic cable core shall be made up of coated glass optical fibres housed to protect

the fibres from mechanical, environmental, and electrical stresses. Materials used within




No.TCOMM 02/17)

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the core shall be compatible with one another, shall not degrade under the electrical

stresses to which they may be exposed, and shall not evolve hydrogen sufficient to degrade

optical performance of fibres within the cable.

4.1.5 Fibre strain Allowances

This cable core shall be designed such that fibre strain does not exceed the limit allowed by

the cable manufacturer under the operational design limits of the cable. Maximum

allowable fibre strain will generally be a function of the proof test level and strength and

fatigue parameters of the coated fibre.

4.1.6 Central Structural Element

If a central structural element is necessary, it shall be of reinforced plastic, epoxy glass, or

other dielectric material. If required, this element shall provide the necessary tensile

strength to limit axial stress on the fibres and minimize fibre buckling due to cable

contraction at low temperatures.

4.1.7 Buffer Tube Filling Compound

Loose buffer tubes shall be filled with a suitable compound compatible with the tubing

material, fibre coating, and coloring to protect the optical fibres and prevent moisture

ingress.

4.1.8 Cable Core Filling/Flooding Compound

The design of the cable may include a suitable filling/flooding compound in the interstices to

prohibit water migration along the fibre optic cable core. The filling compound shall be

compatible with all components with which it may come in contact.

4.1.9 Binder/Tape

A binder yarn(s) and/or a layer(s) of overlapping non-hygroscopes tape(s) may be used to

hold the cable core elements in place during application of the jacket.

4.2.0 Inner Jacket

A protective inner jacket or jackets of a suitable material may be applied over the fibre optic

cable core, isolating the cable core from any external strength elements and the cable outer

jacket.

4.2.1 Optical Fibre

The core and the cladding shall consist of glass that is predominantly silica (SiO2). The

coating which is usually made from one or more plastic materials or composition, shall be

provided to protect the fibre during manufacture, handling, and use.

4.2.2 Buffer Construction

A buffer for protection may surround the individually coated fibre(s) or fibre ribbon(s) from

physical damage during fabrication, installation, and performance of the OPUG. Loose

buffer or tight buffer construction is two types of protection that may be used to isolate the

fibres. The fibre coating and buffer shall be strippable for splicing and termination.




No.TCOMM 02/17)

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4.2.3 Loose Buffer

Loose buffer construction shall consist of a tube or channel that surrounds each fibre or fibre

group. The inside of the tube or channel shall be filled with a filling compound.

4.2.4 Tight Buffer Construction

Tight buffer construction shall consist of a suitable material that comes in contact with the

coated fibre.

4.2.5 Color Coding

Color-coding is essential for identifying individual optical fibres and groups of optical fibres.

The colors shall be in accordance with TIA/EIA 598-A-1995 [B43].

4.2.6 Outer Jacket

The outer jacket shall be designed to house and protect the inner elements of the cable from

damage due to moisture, sunlight, environmental, thermal, mechanical, and electrical

stresses. The minimum thickness at any point shall not less than 1.3mm.

· The jacket material shall be dielectric, non-nutrient to fungus, and meet the

requirements of electrical tests according to IEEE Single Mode Fibre standard. The

jacket material may consist of a polyethylene that shall contain carbon black and an

antioxidant.

· The jacket shall be extruded over the underlying element and shall be of uniform

diameter to properly fit support hardware. The extruded surface shall be smooth for

minimal ice buildup.

The outer jacket shall incorporate a mixture of anti-termite compound so that it is termite

proof when laid in the ground. The anti-termite compound used shall be subjected to the

approval of the relevant local authorities and the Company.

The cable shall be embossed with Syarikat SESCo Berhad name inclusive cable length

marking.

4.2.7 Armour

The armour shall consist of corrugated steel tape with a zinc coating applied by the hot-dip

process. The nominal armour diameter shall be not less than 0.15mm.

4.2.8 Cable Length

Recommend cable length per cable drum is 2.000km.




No.TCOMM 02/17)

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5.0 SPLICING/JOINTING OF OPTICAL FIBRE CABLE

In order to maintain the characteristics of the optical fibre after installation, the

splicing/jointing of the optical fibre shall be performed using fusion arc splicing equipment.

Prior to splicing/jointing procedure, the Contractor shall measure the loss of the optical fibre

in each section and then proceed to test the fibre splice/joint using two-point measurement

technique. The optical loss shall not exceed the following requirements:

(a) Mean Splice Loss of 0.1 dB.

(b) Terminating Loss of 1.0 dB per Connection.

6.0 SPECIFICATION FOR JOINTING MATERIALS INCLUDING SPLICING ENCLOSURES

The Tenderer shall provide full detail list on the proposed jointing kits and joint enclosures

necessary to complete the installation and future maintenance of both type of fibre optic

cables.

Joint enclosure for ADSS fibre optic cables:-

The joint enclosure shall be of mechanical type, fibre reinforced plastic or equivalent and

shall have dimension not exceeding 590mm x 160mm x 130mm (L x W x H), and shall be

equipped with the fibre organizers of sufficient capacity to hold the fibre contained within

the various types of cables and the surplus length of fibre after splicing.

The Contractor shall state the maximum capacity of each joint enclosure offered to satisfy

the different capacity requirements.

The joint enclosure provided shall be within the strain relief bars for connection to the FRP

strength members to prevent cable pull out. The enclosure design shall facilitate easy

installation and re-enterable at a very low cost.

The joint enclosure shall be flame and corrosion resistant, airtight and complete with water-

tight sealed doors for protection against water penetration.

After jointing the cables, the joint box and excess length have to be properly fixed to the

tower pole, as high as possible (recommendatory). The excess length has to be looped into

the tower construction or in the top of the pole in such a way that, when necessary, the joint

box can be removed from the tower or pole and brought down to ground level for opening

in order to facilitate repair and testing of the optical fibre.

Joint enclosure for OPUG fibre optic cables:-

The joint enclosure shall be suitable for direct buried conditions.

The enclosure materials shall be chemically suitable with the entire cable component and

shall resistance to petroleum distillates, soil and fungus.




No.TCOMM 02/17)

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The joint enclosure shall be flame and corrosion resistant, airtight and complete with water-

tight sealed doors for protection against water penetration.

For the termination of the optical fibre in buildings, the Optical Termination Box (OTB) is

used. In the OT each fibre of the fibre optic cable will be spliced onto connection cords

(pigtails) to which an optical connector is attached. These connectors have to be mounted

on an optical patch panel. On the other side of the patch, a single fibre patch cord can be

connected via the selected coupling to the optical equipment. The recommended optical

patch panel shall be FC type.

7.0 TERMINATION BOX

The Tenderer shall provide detail of the proposed in the building Optical Termination Box

(OTB wall mounted type) which is suitable for incoming and outgoing fibre optic cables.

8.0 FIBRE CORDS CONNECTION

OTB termination connection (patch panel) shall be suitable for single mode fibre connection

with FC/PC connectors.

9.0 CABLE ACCESSORIES AND HARDWARE

The Tenderer shall provide full detail list on the proposed cable accessories and hardware

and accessories for mounting/laying of the cable such as clamps, dampers and etc. shall be

made from industry standard materials suitable and acceptable for the intended use.

9.1.1 SUSPENSION CLAMPS

Only helical or preformed armour rod suspension clamps shall be employed. The armour

rods shall be smooth and rounded at the end to prevent electric field buildup. The cable

seat shall be smooth and free from burrs and shall be flared to avoid sharp bends to the

optical fibre cable at the clamps mouths. Neoprene rubber inserts shall be used in the

clamps. The suspension clamps shall be capable of holding the optical fibre cable with

armour rods installed without slipping under unbalanced tension of 25 percent of the rated

ultimate strength of the cable and shall have a rating of not less than the ultimate tensile

strength of the optical fibre cable. Tightening torque of bolts shall be in accordance with the

manufacturer’s recommendations.

9.1.2 TENSION CLAMPS

Tension clamps offered shall be of the bolted type and suitable of holding the self-

supporting optical fibre cable. Only helical or preformed armour rod tension clamps shall be

employed. The armour rods shall be smooth and rounded at the ends to prevent electric

field buildup. The tension clamps shall be capable of holding the optical fibre cable with

preformed armour rods installed without slipping or damaging the optical fibre cables when

the cable is under tension of 85% of its ultimate tensile strength. The ultimate strength of




No.TCOMM 02/17)

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the tension clamp shall not be less than that of the optical fibre cable. Tightening torque of

bolts shall be in accordance with the manufacturer’s recommendations.

9.1.3 DOWNLOAD CLAMPS

Vibration dampers suitable for installation on the self-supporting optical fibre cable shall be

supplied and installed as per cable manufacturer recommendation. The Tenderer shall

provide complete installation instructions for the dampers. Dampers, the preformed helical

type is recommended.

10.0 TRANSMISSION LINE

Double circuit energized transmission lines operating at 275kV would be installed with ADSS

cable. The line traverses through level, undulating and hilly jungle terrain, crosses rivers,

roads and forest are.

10.1.1 TOWER DESIGN

Double circuit self-supporting lattice tower are used for supporting the conductor. The type

and design are given in Appendix 2.

10.1.2 GENERAL PRECAUTIONS

For general precaution during the implementation of the above, please refer to SESCo

Electrical Safety Rules (revised January 1999) as per attached mainly for the following

conditions:-

a) E24 Work in substation containing exposed Live High Voltage conductors.

b) E26 Work on towers, poles or structures supporting High voltage overhead lines other

than Live line work

c) E27 Work on Live High Voltage overhead lines.

10.1.3 MINIMUM SAFE WORKING CLEARANCE

The safe working clearances for work on towers, poles and supporting structures carrying

Live High Voltage conductors shall be as follows:-

Rated Voltage Minimum Clearance

Exceeding 33kV but not exceeding 132kV 2.4m


No Person shall extend beyond position in which it is possible for him to bring any part of his

body or any working tool within specified safe working clearances.

10.1.4 MINIMUM SAFETY CLEARANCES TO LIVE CONDUCTORS

The minimum safety clearance from the nearest exposed Live conductors to the ground level

or platform or access way which must be maintained for work according to the rated Voltage

shall be:-




No.TCOMM 02/17)

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Rated Voltage Minimum Clearance



If the work cannot be carried without leaving ground level or such platform or access ways,

the above minimum clearance shall be obtained from the nearest exposed Live High Voltage

conductor to the points from which work is carried out.

11.0 CABLE MOUNTING

Self-supporting optical fibre cables shall be mounted at appropriate points under the

existing fibre cable on existing transmission line support structures where the electrical

stress on the cable is minimum whilst meeting the ground clearance requirement of 7.01m

(for 275kV & 132kV).

Tenderers are required to submit detailed calculations, drawings, and relevant information

on the establishment of the point of support of the optical fibre cables on the support

structures. Drawings submitted shall include details of cable to live conductor clearances

and cable swing angles at every day and worst case conditions.

Cable support assemblies and accessories, support structure reinforcements and details of

attachment of the cable support assemblies on the support structures shall be included in

the Tender submission.

No drilling allowed on any transmission tower.

12.0 STRINGING PLAN

The contractor shall submit the stringing plan in your survey report. The plan shall describe

the work schedule, cable and reel schedule together with fibre splicing schedule, method of

stringing, temporary guying, scaffolding, cable accessories installation, personnel required in

performing the work and list of tools and equipment to be employed together with printed

instruction.

Stringing of the cable and related operation shall be performed during daylight hours.

Particular care shall be taken at all time to ensure that the cable is not kinked, twisted or

abraded in any manner. Optical cable shall not be dragged over the ground, water, rock,

fence wire or any object which may damage the cable. Where it would be impossible to

keep the optical cable from coming into contact with objects which may injure it, suitable

guards or sheaves or running wood rollers shall be used to protect the cable from damage.




No.TCOMM 02/17)

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If the optical fibre cable is damaged by the Contractor’s operations, the Contractor shall

repair or replace the whole damaged tower to tower sections, including furnishing necessary

additional material, in a satisfactory manner and at no additional cost to the Purchaser. All

sections of the cable damaged during stringing work shall be repaired or replaced before

cable is sagged in place. During stringing work, the following cautions shall also be taken

into account:

(1) Minimum Bending Radius

During stringing work, minimum bending radius shall not be less than the repeated

minimum bending radius specified by the cable manufacturer.

(2) Prevention of Twist

During stringing work, optical fibres contained in the cables will be affected and

damaged by excessive twisting action. Therefore, one or two counter weights

together with a swivel shall be attached at the pulling rope/cable end joint to

prevent the cable from twisting. Care must be taken to ensure that the counter

weights are removed from its attachment before the cable end passes through the

stringing sheaves and then reattached once the cable end has passed through the

stringing sheaves. Counter weights used shall preferably be of the flexible braided

type or of similar construction so that the counterweights can pass through the

stringing sheaves without being removed and reattached from the cable end

assembly.

(3) Prevention of Impact

The optical cable should be strung and tensioned with minimal mechanical impact,

otherwise potential damage to optical fibre may occur.

It is recommended that a protection sleeve be inserted around cable for a length of 5

metres, where counter weights are positioned on cable, in order to eliminate mechanical

impact when counter weights approach stringing sheaves.

12.1.1 RUNNING-BLOCKS

Running blocks shall be designed especially for stringing the optical cable and shall have

grooves of shape and size in accordance with the manufacturer’s printed instructions for the

cable size used. The sheaves shall be equipped with high quality ball or roller bearings and

lined with bonded neoprene, urethane, or equivalent material. The sheaves shall have free

and easy movement in the blocks and shall not cause any damage to the optical cable.

Sheaves which do not run freely or which hinder the stringing operation shall be

immediately replaced.

12.1.2 REEL STANDS

Reel stands shall be heavily constructed and provisions shall be made for braking the reels

when spinning on the stands.




No.TCOMM 02/17)

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12.1.3 RUNNING LINES

Running lines shall be made of Manila hemp or nylon or other dielectric material. Steel or

metallic running lines are prohibited. The running line shall be strong enough for the

stringing work and shall be attached to the optical fibre cable with a mesh stocking grip or

preformed armor rod or by other approved methods. To reduce torsional rotation, the

optical fibre cable shall be attached to the running line by means of a swivel and

counterweight.

12.1.4 POWERED PULLER

The powered puller shall have capacity of not less than the maximum stringing tension of

the cable. The puller shall have powered winch with transmission gear for changing speed

during stringing work.

12.1.5 SCAFFOLDING

The Contractor shall be responsible for acquiring permission to execute the work from

administrators of facilities over which the optical fibre cable is to pass, such as roads,

railways, communication lines and power distribution lines. In addition, the Contractor shall

be responsible for all necessary procedures involved, including the application for the

permission.

The Contractor shall, at his expenses, provide suitable scaffolding at the places where his

work may cause injury or damage to persons, livestock or property of value of a third party.

The scaffolding shall be of sufficient strength to withstand wind pressure, vertical loads and

all other loads which may be anticipated, and shall be of such structure as to prevent the

cable from coming within 5 metres from railroad tracks and roads; and 1.2 metres from

telecommunication lines and 33kV or less distribution lines during unreeling of the cable.

The scaffolding itself shall also have the aforementioned clearance. In case metal scaffolding

is used for optical cable crossing, efficient temporary grounding shall be installed.

13.0 CABLE LAYING

The cable shall be laid from gantry towards substation termination box using proposed or

existing cable ducts/trenches in the Substations. The Contractor shall submit the plan

before commencing installation work for approval. The plan shall describe the works

schedule, method of laying, termination box and installation, personnel required in

performing the work and list of tools and equipment to be employed together with printed

instruction.

Particular care shall be taken at all times to ensure that cables shall not be dragged over the

ground, rock, fence wire or any sharp object which may damage the cable.

If the cable is damaged by the Contractor’s operations, the Contractor shall repair or replace

the entire including furnishing necessary additional materials, in satisfactory manner and at

no additional cost to Syarikat SESCo Berhad.

During cable laying, the following precautions shall also be taken into account:




No.TCOMM 02/17)

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i) Minimum bending radius: the minimum bending radius shall not be less

than the repeated minimum bending radius specified by the cable

manufacturer.

ii) Prevention of twist: During cable laying works, the optical fibre contained in

the cables shall not be affected or damaged by excessive twisting action.

14.0 MISCELLANEOUS MATERIALS

Is and/or accessories not specifically or specially mentioned herein or by detailed

specification shall be of industry standard suitable for the intended use.

15.0 TESTING AND COMMISSIONING RESULT

15.1.1 The Contractor shall conduct the following:-

(a) The OTDR tests on site for each cabel drum prior to installation.

(b) The OTDR test shall be carried out for each spliced joint.

(c) The OTDR and Power Test shall be carried out for the complete link from end to end

termination box patch panel.

15.1.2 The result shall include where applicable:-

(a) Date of the test;

(b) Optical wavelength used;

(c) OTDR and Power Meter Test Result on all fibre;

(d) OTDR and Power Meter Manufacture and Model numbers;

(e) Name/s of test personnel and witness;

The result shall pass to the satisfaction of the Engineer. If not, may be rejected forthwith.

16.0 FACTORY ACCEPTANCE TEST (FAT)

The FAT shall be included but not limited to the following tests:

a) OTDR Test (Measuring Fibre attenuation)

b) Water Immersion Test

c) Measuring a thickness of jacket

d) Measuring cable diameter

e) Checking cable structure visibly (eg. Checking colour code of tube, characters of cable

marking on a cable)

f) Impact test

g) Compressive Strength Test

h) Cable Twist Test

i) Flex Test

j) Tensile and Bend Test

For more detail, please refer to the Part II, Section 3- Appendix 3.




No.TCOMM 02/17)

17

17.0 DOCUMENTATION

FINAL DOCUMENT

After successful commissioning, contractor shall give final documentation to the Engineer for

the certification of the completion of the above works. The final documentation shall

comprise as follows:-

(a) Item 15.15.1

(b) Item 15.15.2

(c) All information, manual and drawing of the material used in the project.

(d) Summary of fixation material used in the project.

(e) As built drawing.

Three (3) copies of this final document shall be provided.

18.0 DAMAGE TO CROPS AND PROPERTY

The contractor shall be take all precaution to avoid damage to land, road, footpath and

pavement, property, crops, trees, plants, flowers, grass etc. and shall ensure that the works

is adequately supervised so that damage is reduced to the minimum. The contractor shall

responsible to reinstate (if requested by the Company Representative), restore and re-plant

after the installation to its original conditions to the satisfaction of the landowner and local

authorities etc. All surplus materials shall be removed after erection and the site shall be left

in clean and tidy condition, to the satisfaction of the Employer.

19.0 SAFETY REQUIREMENT

Every precaution shall be taken in the installation and interface design to prevent the high

voltage or other electrical hazards from the line to come in contact with optical fiber cables

and terminal equipment. Workmen are required to observe all safety requirements

according SESCo Electrical Safety Rules and OSH act, at all times whilst working on support

structures carrying live high voltage conductors or on the ground during cable erection work.

Work on the support structures can only be carried out with a valid “Permit to Work”

certificate issued by SESCo’s Authorized Person. Personnel involved in the installation of

optical fibre cables on transmission lines under live circuit conditions shall have adequate

knowledge and experience at high voltage level on how to avoid danger due to electrical

shock.

Special precautions shall be taken to ensure that under no circumstances personnel shall get

closer than the stipulated safety clearances published in the Sarawak Electricity Ordinance.

Protective clothing is recommended to be worn by the installation team during cable

installation on poles with the circuits.

Supply, Delivery, Installation, and Commissioning of ADSS Fibre

Optic Cable (With 25KV Anti-Tracking) for Kemantan 275KV to

Paradom 33kV Substation (Kemantan - Oya 275kV Transmission

Line)

TENDER DOCUMENTS: SARAWAK ENERGY REF. NO. TCOMM 02/17

PART I – TENDER PROCEDURES

SECTION 2 – TENDER PARTICULARS

These Tender Particulars specify matters particular to this tender process and should be

read in conjunction with the Instructions to Tenderers set out in of Part I, Section 3 of the

Tender Documents.

Tender Particulars

Tender for Supply, Delivery, Installation, and Commissioning of ADSS Fibre Optic Cable

(with 25KV Anti -Tracking) for Kemantan 275kV to Paradom 33kV Substation (Kemantan-

Oya 275kV Transmission Line)

No. Clause

Reference

Description Details

1. Clause

1.1(c)

Closing Date and Time 3:00 pm on 01.03.2017

2. Clause

1.1(h)

Eligibility Requirements Open Tender

- Bonafide

3. Clause

1.1(v) and

Clause 9

Sarawak Energy’s

Representative

Name and designation: Sharon Boon Khai

Yen (E1)

Contact details: [082-441188 ext.1345, Fax

082-448322,

[email protected]]

4. Clause

1.1(ee)

Tender Validity Period The period commencing from the Closing

Date and Time and expiring on the date

falling one hundred and twenty (120) days

from the Closing Date and Time

5. Clause 5.1 Tender Briefing Upon Request

6. Clause 6.1 Site Visit Upon Request

7. Clause 24.2 Pricing Method Fixed lump sum

8. Clause 28.1 Value of Tender

Security

Please refer to Instruction To Tenderer For

Supply of Material and Services - Clause 19

“Tender Bond”

9. Clause 31.1 Copies of Tender Offer The Tenderer shall prepare and submit:

(a) one (1) original version;

Tender Particulars

Tender for Supply, Delivery, Installation, and Commissioning of ADSS Fibre Optic Cable

(with 25KV Anti -Tracking) for Kemantan 275kV to Paradom 33kV Substation (Kemantan-

Oya 275kV Transmission Line)

of its Tender Offer

10. Clause

32.1(b) and

Clause 33.1

Address for submission

of Tender Offers

Delivery by hand or by courier to:

The Chief Executive Officer

Sarawak Energy Berhad

Tender for Supply, Delivery, Installation, and

Commissioning of ADSS Fibre Optic Cable

(with 25KV Anti-Tracking) for Kemantan

275kV and Paradom 33kV Substation

(Kemantan- Oya 275kV Transmission Line)

Tender Box,

Level 1 (Ground Floor) North Wing

Menara Sarawak Energy

No. 1 The Isthmus

93050 Kuching

Sarawak

Malaysia.