CONSTRUCTION OF SOCIAL APARTMENTS

PROJECT

ELECTRICAL WORKS PROCEDURE

DOC No: KON-8.2-QA-PRO-0021

REVISION & APPROVAL STATUS:

C1 Approved for Construction A.Salmanov

A1 Issued for internal comment A.Salmanov

PREPARED CHECKED APPROVED

REV. DATE DESCRIPTION
by by by
ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

CONTENTS

1.0 Purpose....................................................................................................................... 3

2.0 Scope.......................................................................................................................... 3

3.0 Definitions.................................................................................................................... 3

4.0 Responsibilities............................................................................................................ 3

5.0 Process........................................................................................................................ 4

5.1 Description of Existing Electrical Power System.........................................................4

5.2 Work Scope................................................................................................................. 4

5.3 Cable Installation......................................................................................................... 5

5.4 Cable Marking Termination..........................................................................................6

5.5 Earthing and Lightning................................................................................................6

5.6 Lighting........................................................................................................................ 7

5.7 Fire Detection and Alarm System................................................................................9

5.8 Telephone System & Data Communication System....................................................9

5.9 Examinations, Tests and Reporting...........................................................................10

List of Forms......................................................................................................................... 10

List of Attachments................................................................................................................ 10

Associated Procedures......................................................................................................... 10

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

1.0 Purpose

This procedure defines the electrical works activities that are performed to ensure the
specification and procedural quality requirements are met.

2.0 Scope
The procedure applies to all electrical works activities performed for “KONTINENT Inshaat”
construction of social apartments Project in Khatai district.

3.0 Definitions

Project: “KONTINENT Inshaat” construction of social apartments Project in

Khatai district.
Contractor: “KONTINENT Inshaat”
Company: “KONTINENT Inshaat” Main Office
Standards: All technical standards or codes referenced in Project QMS Documents.
Drawing &Specifictions: Technical specifications and drawings issued by “KONTINENT
Inshaat” or third party
Approved: The revision of the related Contractor’s Procedure, Plan, or other
documents, which were approved by Construction Director.
AFC: Approved For Construction
LV: Low Voltage (<1kV)
MV: Medium Voltage (≥1kV)
IT&T: Information Technologies and Telecommunication
OH/L: Over Head Line
CCTV: Closed Circuit Television System
UPS: Uninterrupted Power Supply
MCB: Miniature Circuit Breaker
μs: Micro Second
HP: High Pressure
IP: Ingress Protection

4.0 Responsibilities

Contractor’s Senior Electrical Engineer is responsible for all electrical works activities.

QC Inspector is responsible for ensuring that all requirements of the ITP are met.

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

5.0 Process

5.1 Description of Existing Electrical Power System

Main power is provided from the local existing 20/6.3kV Substation of

BakiElektrikShebeke (BES) near the ATA yard. Refer to Attachment 1 for Principal Single
Line Diagram of ATA Yard. The energy is transmitted via two independent 6.3kV
underground lines: first underground line approximately 480 meters to the first
transformer station, (TR-18A) which is placed near the accommodation buildings; second
underground line approximately 760 meters to the third substation, (TR-18C) which is
placed near to the existing fabrication shop. The second substation (TR-18B) is placed in
deck fabrication area. The underground lines between the three transformer stations
make a ring. This gives an opportunity for, energy supply in the case of a failure from any
lines.

Measuring and protection of incoming lines was done at existing Azerenergy &
BakiElektrikShebeke (BES) Substation. The incomer of the switchgears at transformer
station is protected against over-current, short-circuit, earth leakage and under voltage.
Tripping or closing manually is possible whenever is required. Transformer feeders is
protected against over-current, short-circuit and earth-leakage, additional protection has
not been foreseen. These outgoing circuit breakers are tripped when a command is
received from the Bucholz and thermal relays. Tripping or closing manually is possible
whenever required.

For the final set-up values of the protection relays and other switching procedures was
adopted based on the instructions of the local electrical authority (Azerenergy &
BakiElektrikShebeke).

The first Transformer (TR-18A)-1000kVA 6.3 / 0.4kV for the offices, second Transformer
(TR-18B)-1000 kVA 6.3 / 0.4 kV for the deck area and third Transformer (TR-18C)-1250
kVA 6.3 / 0.4kV for existing Fabrication shops was erected accordingly and connected to
that substation by laying 6.3 / 10 kV underground cables.

Two main LV distribution boards are installed in transformer buildings for providing
separate feeds in order to maintain continuous electrical supply. In the event of failure in
the main network, diesel driven generators shall be operated automatically. One is
located in the office area, rated 635kVA, the second is located in TR-18B for deck area
fabrication, rated 810kVA and the third is located in TR-18C for existing Fabrication
shops, rated 500 kVA.

A battery powered UPS system with autonomy of 30 minutes is provided to prevent

damage to computer servers. The system consist of two separate panels;
1 each 60kVA dedicated for ATA office
1 each 3kVA dedicated for IT Building
Each office desk within the ATA offices has 2UPS socket outlet (1 for PC, 1 for monitor).
Additionally, main server and related equipment are also been fed from UPS system.

To protect the computers and other electronic devices against fluctuation, an individual
UPS will be used where necessary.

5.2 Work Scope

Below listed electrical activities will be conducted within the Scope:

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

 Construction of new 20/11 kV substation and 11/0.4kV substation for the electrical
supply of new fabrication shops.

Two off new 20kV underground cables will be installed from Substation 109 to the new
substation TR-18D. The existing 20kV and 11 kV switchgear currently installed in
Substation TR-18C will be transferred to TR-18D together with the existing 15MVA
20/11kV transformer. A new 0.4kV switchboard and a new 500kW diesel driven generator
will be installed in TR-18D. Additionally a new 1MVA 11/0.4kV Transformer will be
installed in TR-18D. The new 0.4kV Switchboard will be normally supplied from the
11/0.4kV transformer, but there will also be a secondary supply derived from a new 0.4kV
cable which will be installed between TR-18C and TR-18D.

A new 11kV cable will be installed from TR-18D to the Junction boxes located at the
south end of the skid-way.

 Installation of MV/LV cable trench within ATA yard

11kV and 0.4kV cables will be installed within the yard. These cables are installed inside
PVC pipes. In some areas PVC pipes will be covered by concrete.

 Electrical works related to Site Office (supply from TR-18B) and Dress Changing
Room (supply from TR-18A) re-location

 Electrical supply from TR-18D and complete electrical installation within the new
Fabrication shop

 Electrical supply from TR-18A and complete electrical installation within the new
AIOC building

 60 kVA UPS for the existing and new AIOC buildings will be installed in existing AIOC
building

 Site Lighting System re-installation

Requirements addressed in the following sections shall be followed during the electrical
works identified on above scope.

5.3 Cable Installation

General

Cables under different voltage and services must be segregated to prevent possible
interference. Segregation distance cannot be lower than 30cm between power, and
telecommunication, data or control cables, etc unless specified otherwise on the
drawings. If MV and LV cables are laid in the same trench, they must be segregated by
brick or concrete slabs and at least 20cm distance, unless specified otherwise on the
drawings.

All cable routes shall conform to the relevant Drawings and accurately measured prior to
cutting any cable.

Manufacturers’ recommendations shall be used for the minimum bending radius of any
cable and wires.

Cables shall be laid as continuous lengths from the source to consumer point without

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

joints except where designated specifically on the relevant drawings.

When the ambient temperature is at 0ºC or below, laying or pulling of thermoplastic

cables shall not be carried out, due to the danger of damaging the insulation sheaths.

Cables shall be laid in smooth parallel formations. Twists, crossings or intertwining of

cables shall be prevented.

Cables run underground shall be buried directly in to cable trench in accordance with
contractor supplied installation drawings approved by Design Company.

Cables shall be laid by hand using cable rollers.

HV/LV cables shall be laid on 100 mm of sand bed and covered with 100mm of sand.
The sand shall be screened to remove sharp objects and compacted to eliminate voids.
Warning tape and /or protection slabs shall be installed over the cables as indicated on
the relevant drawings.

The minimum depth of cable trenches shall be as follows:

a) For power and control cables up to 1000V, 700 mm
b) For street lighting and telephone cables, 700 mm
c) Power cables above 1000V, 800mm
d) Road crossings, 1000mm.
5.4 Cable Marking Termination

Cable identification labels shall be used at both ends of cables, cable trench markers
shall be located both side of road crossings and at regular intervals along the main cable
routes.

Cable core identification shall be provided for all type of cables by means of color coded,
numbered or lettered ferrules. All ferrules shall be positioned so that they are easily
readable.

All cable terminations over 2.5mm² shall be made by compression type cable lugs, using
appropriate compressions tools, unless the equipment is connected to its own clamp type
terminals.

The correct size of lug and crimping tool shall be used to ensure good conducting
properties and mechanical strength.

Cable entry to any board or device shall be carried out using the appropriate type of
cable glands.

5.5 Earthing and Lightning

The earthing and lightning protection shall be carried out in accordance with the relevant
drawings and standards.

50mm² stranded copper conductor and 20 mm dia. steel cored copper grounding rods
shall be used for the main earthing system.

All non-current carrying metal parts of electrical equipment shall be effectively bonded to
the earth network.

1x16mm² PVC insulated copper cable (yellow/green outer sheath) shall be used for

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

equipment-structure grounding

Earthing wires and cables shall be laid in the same trench together with other cables
where possible.

Vessels and tanks shall be bonded utilizing the earthing bosses supplied with the
equipment.

Insulated earth wires and cables have green/yellow colored sheaths.

It shall be verified that the electrical earthing system does not have resistance more than
2 ohm in accordance to ANSI-IEE guide for safety in AC substation grounding standard
80. For the MV substation, this earthing resistance will be <= 1 ohm. These values will be
sufficient for the MCB ratings.

Underground connections to main earth conductor shall be done by using clamps.

3 off active type lightning arresters (early streamer emission starter precedence 20/40/60
μs) was mounted on the poles, 10 meters height for lightning protection of both camp and
office areas. One more lightening arrester shall be mounted new substation TR-18D.

Lightning arrester shall be connected to the site earthing network.

5.6 Lighting

Indoor Lighting

Each building or unit terminates in separate distribution panels, protection class mainly
IP40, but they have features IP20 when their doors are open. Distribution panels have a
separate earthing bus bar, connected directly to main earthing network.

All related equipment or components of the panels such as circuit breakers, busbars,
terminals, etc, incorporating residual current protection 30mA relays on socket lines at
wet areas and machinery sockets, shall be provided according to international standards
to protect personnel from electrical shocks.

Lighting and socket outputs shall be protected with MCBs. All MCBs shall have 6/10kA
short circuit breaking capacity. Independent outputs (MCBs) shall be provided for the
mechanical equipment such as heaters, fan coils, laundry machines, etc.

The electrical panels, located at electrical rooms shall be with cover protection class IP40
and lighting fixtures shall be selected mainly metal halide/sodium vapor 250W/400W type
as IP20/IP55 together with suitable cable glands.

Lighting intensity shall be selected to provide appropriate required lighting levels to meet
operational needs. Illumination levels shall be as follows:

Office areas: 400-500 Lux (at 100cm above from the floor level)

General Areas: 300-400 Lux (at 100cm above from the floor level)

Circulation areas and toilets 100-150 Lux (at 100cm above from the floor level)

To meet above illumination levels, fluorescent lighting fixtures, 4x18W prismatic and/or
parabolic type shall generally be used depending on the specialty of building rooms or
units.

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

E60 and /or C60 type incandescent fixtures shall be used for lighting entrances of the
buildings or units. For emergency cases, EXIT armatures shall be used to show external
doors backed up with batteries. Their capacity shall be enough for one hour safe
operation duration.

In the case of power failure in the building, a circuit of fluorescent lamp 1x36W feed from
Generator Panel bus-bar for emergency lighting is provided.

In Plants, some circuits of lighting 250W/400W metal halide or sodium vapor or mercury
vapor, HDK/Eurobay type armatures directly feed from Generator bus-bar for emergency
lighting.

Electrical cabling and wiring shall conform to the international standards. Cables shall be
laid in PVC cable channel with cover mounted on the wall surfaces or inside the cable
protection pipes, mounted between wall panels.

All cable ends and cores shall be identified and numbered by using identification labels
and ferrules before termination.

External Lighting

An external lighting system is provided to all roads, storage areas, walkways and building
entrances, which shall operate from the main electricity supply. In the case of failure
some circuit of lighting directly feed from Generator Bus bar for emergency lighting.

 150W/250W Fixtures, HP mercury vapor lamp on the steel painted lighting

pole/galvanized pole; 9/13 meters height shall be used for road lighting. Some of
these fixtures directly feed from generator bus-bar in the case of network failure
for emergency lighting.

 1000W/2000W flood lights shall be used on the same type poles, height 10/24/25
meters. Some of these fixtures directly feed from generator bus-bar in the case
of network failure for emergency lighting.

 150W HP Sodium vapor lamp shall be used for security fence lighting on the
camp area. Some of these fixtures directly feed from generator bus-bar in the
case of network failure for emergency lighting.

 All fixtures shall be fed from the separate external lighting panel with an
automatic off hand lighting controlled (photocell controlled).

 Each lighting fixtures shall be protected against short circuit and /or over current
by using the 4A and/or 6A MCB (3kA, c-Type tripping curve);

 All lighting poles shall be grounded by using 10mm 2 bare copper stranded,
earthing wires which shall be connected to main earth wire and, additionally, the
last pole shall be grounded separately by grounded rod. The philosophy of this
application is as defined in BS7430 part 25 street lighting and other electrically
supplied street equipments paragraph 25.2 TN-S systems

5.7 Fire Detection and Alarm System

The fire detection and alarm system is provided on both accommodation buildings and
office area for detecting smoke/heat depending on the purpose of the building and
monitoring and controlling addressable system by main panels which shall be installed on
the main gate house.

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

Two types of system is installed. One of them is Conventional Fire Detection and alarm
system that is used in buildings as per system design and the other one is addressable
fire detection and alarm system that is used for monitoring all conventional panels,
addressable detectors and manual call stations.

The Conventional Fire Detection and Alarm system consists of mainly of the following:

a) 6, 4 and 2 zones Conventional Panels

b) Photoelectric Smoke Detectors
c) Heat Detectors
d) Manual call Points
e) Sounders
f) Strobes

The Addressable Fire Detection and Alarm system consists of mainly of the following:

a) Addressable Main Fire Alarm Panels

b) Addressable Smoke/Heat Detectors
c) Addressable Manual Call Stations
d) Addressable Sounder/Strobe
e) Monitor/Fault Modules
f) Gas detectors

The same system shall be installed for the new AIOC office building.

5.8 Telephone System & Data Communication System

Telephone System

There is two Hicom 150 telephone centre to serve offices and Plants. Users are able to
call each other without using public lines.

Wiring between buildings is copper. Copper wires is distributed from IT building to offices
and plants.

Data Communication System

Company and contractors require telephone and data access within the various site
offices. To accommodate this CAT 5e structured cabling is installed in all the office
locations and fibre optic cable is used to link these offices to the IT building.

The telecom system and data communication system shall be installed for the new AIOC
office building.

5.9 Examinations, Tests and Reporting

Electrical Installation shall be inspected and reported in accordance with the Inspection &
Test Plan Doc. No.: AZF-086-QA-PLN-0002.

List of Forms
AZF-086-QF-044 Inspection of Electric Cables

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

AZF-086-QF-045 HV Cable Test Certificate

AZF-086-QF-046 LV Cable Test Certificate

AZF-086-QF-047 Lighting & Small Power Distribution Test Certificate

AZF-086-QF-048 Report For Electrical Switchgear

AZF-086-QF-049 Inspection for Power Transformers

AZF-086-QF-050 Generator Test Certificate

AZF-086-QF-051 Report for Measurement of Total Grounding Resistance

AZF-086-QF-052 Inspection Report for UPS and Batteries

AZF-086-QF-073 Underground Services / Drainage Inspection Report

List of Attachments

Attachment 1 Principal Single Line Diagram of ATA Yard

Associated Procedures

AZF-086-QA-PLN-0001 Project Quality Plan

AZF-086-QA- PLN-0002 Inspection & Test Plan

IEC 364 Latest Edition Electrical Installation of Buildings,

IEC.909 Edition 1991 Short Circuit Current Calculation, in three phase AC.
systems

IEC.76 Edition 1980 Power Transformers General,

DIN 6280 Latest Edition Emergency Diesel Generator,

IEC.298 Latest Edition MV Switchgears, 35kv,

IEC.439, IEC529 Latest Edition LV Power Distribution Panels,

IEC.6802, VDE0276 Latest Edition Power Cables 0,6/1 Kv,

IEC Latest Edition Power Cables 20/36 Kv,

VDE0816 Latest Edition Telecom,

DIN5035 Latest Edition Artificial Lighting Interiors Lighting System,

EN60598 Latest Edition Lighting Fixtures,

BS7430 Edition 1991 Code of practice for Earthing,

NFC17-102 Latest Edition Lightning Arrester,

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ELECTRICAL WORKS PROCEDURE KON-8.2-QA-PRO-0021

NFPA70, NFPA101 Latest Edition Fire Detection & Alarm.

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Attachment 1 AZF-086-QA-PRO-0021

Principal Single Line Diagram of ATA Yard

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