FUNCTIONAL SPECIFICATIONS OF HVAC TRANSMISSION LINE

1 F FUNCTIONAL SPECIFICATIONS OF hvac TRANSMISSION line Final Feasibility Update Report CASA-1000 Update i 020913-4 SRP-0300-01 TABLE OF CONTENTS F. FUNCTIONAL SPECIFICATIONS OF hvac TRANSMISSION line .. F-2 Scope .. F-2 Introduction .. F-2 Project Area Weather Conditions .. F-3 Codes and Standards .. F-4 System Conditions .. F-6 Drawings .. F-6 Design and Material .. F-6 Survey Guidelines .. F-7 line design and layout .. F-7 Towers .. F-8 General .. F-8 Tower Types .. F-8 Material .. F-9 Galvanizing.

2 F-10 Tower loads .. F-10 Insulator swing .. F-12 Tower tests .. F-12 Drawings .. F-13 PLS-Tower model .. F-13 Phase Conductor .. F-13 Optical Ground-wire (OPGW) .. F-13 Overhead Shield-wire (OHSW) .. F-14 Insulators, Hardware and Accessories .. F-14 Tower Foundations .. F-15 Tower Grounding .. F-16 Security and Restoration Requirements .. F-16 Security Requirements during construction .. F-16 Security and Restoration Requirements during Operation and Maintenance .. F-16 Final Feasibility Update Report CASA-1000 Update F-2 020913-4 SRP-0300-01 F.

3 FUNCTIONAL SPECIFICATIONS OF hvac TRANSMISSION line Scope The Governments of Afghanistan, the Kyrgyz Republic, Pakistan and Tajikistan plan to implement the CASA 1000 TRANSMISSION Project under the Central and South Asian Regional Electricity Market (CASAREM) initiative. The aim of the Project is to supply surplus power to Pakistan and to Afghanistan. As an important component of the CASA-1000 project, it was felt necessary to develop the hvac TRANSMISSION interconnection between the Kyrgyz Republic and Tajikistan in order to transfer the surplus energy from the Kyrgyz Republic to Tajikistan for onward TRANSMISSION to Pakistan and Afghanistan.

4 This document describes the FUNCTIONAL SPECIFICATIONS governing Design and Materials for the proposed 500kV AC TRANSMISSION line between Tajikistan and The Kyrgyz Republic. The FUNCTIONAL SPECIFICATIONS for the converter stations and substations are included in Appendix G of the report. It is to be noted that these are FUNCTIONAL SPECIFICATIONS only to define the general parameters of the line . The SPECIFICATIONS will be reviewed and further detailed prior to issuance for bid purposes. The substation works at Datka and Khoudjand are not included in this consultancy mandate.

5 The necessary additional work inside the substations required to terminate the line shall be specified and furnished by others. Introduction The proposed TRANSMISSION line will be 500kV hvac , installed on self-supporting lattice steel towers, and wherever required M-type guyed structures will also be utilized. The line will originate from the proposed 500 kV substation Datka near Jalalabad in The Kyrgyz Republic and terminate at the 500kV substation at Khoudjand in Tajikistan. The approximate total length of the line is 450km.

6 The approximate lengths in each of the two countries The Kyrgyz Republic and Tajikistan are given in the table below. Country Length (km) The Kyrgyz Republic 430 Tajikistan 20 Total Length 450 In the Kyrgyz Republic, about 40% of the route runs within 2000 meters above sea level (masl) altitude. The remaining line route ranges between 2000-2300masl. In Tajikistan, the line route runs at an altitude ranging from 500 masl to about 900 masl.

7 About one fourth of the route generally follows close and parallel to the existing roads. There are a number of asphalt road crossings along the route as well as secondary motor-able roads/tracks from the main roads which cross the route. The terrain is mostly mountainous reaching an altitude of 2300 masl, with the exception of some sections near Jalalabad, few other small sections of the line in the Kyrgyz Republic, and the segment in Tajikistan are in relatively flat land. The soil varies from sierozem to fractured rock to dried river bed sandy like and in some places at high altitudes, hard rock.

8 The right-of-way width is 100m. This Final Feasibility Update Report CASA-1000 Update F-3 020913-4 SRP-0300-01 description is provided as an introduction only. The prospective contractors are expected to make their own evaluation based upon site visit. Project Area Weather Conditions Khoujand (Tajikistan) Main parameters of weather conditions are provided below: Maximum air temperature of the year 46 C Minimum air temperature of the year -26 C Average air temperature of the year C Maximum air pressure of the year 992 hpa Minimum air pressure of the year hpa Average air pressure of the year 967 hpa Annual maximum precipitation in the form of rain mm Annual average precipitation in the form of rain 167 mm Annual relative humidity 55% Annual average thickness of

9 Drift 5cm Annual maximum thickness of drift 47cm Annual maximum thickness of frozen earth Average number of days of thunderstorm/year 12 days Average number of days of simoom/year 7 days Annual average wind speed m/sec Annual duration of frost-free period 234 days Thickness of cables icing 10mm Direction of annual prevailing wind SW According to data of Tajik weather station the following data was obtained by making use of the two methods.

10 Maximum average wind speed at altitude 10m during 10 minutes in case by using data of 50 years is (USSR District Wind Zone III). Following the Tajik s data the maximum wind speed during 50 years is 37 m/sec. According to the field reconnaissance by the Tajik team maximum wind speed was 32 m/sec during 20 days. Taking into account above mentioned it is recommended to use average maximum speed during 50 years at 10masl for 10 minutes as 30 m/sec. Jalalabad, near Datka substation (the Kyrgyz Republic) Monthly meteorological data from the Meteorological Centre of the Jalalabad oblast is provided in the following table.