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Proposed
Salang
Tunnel
Substation
September 2013
Presented by:
PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Outline of Presentation
• Background
• Objectives
• Field Investigation and Data Gathering
• Proposed Available Alternate Substation Sites
• Selected Substation Site
• Involved Parties
• Questions
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Background
• Tetra Tech (Tt) was requested by USAID to provide
technical sections for others to use as part of an EPC
package to build a primary substation near the
northern terminus of the Salang Tunnel in
Afghanistan.
• The services for this request was performed by Tt
under the Afghanistan Engineering Support Program
(AESP) for USAID.
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Objective
• Develop technical documents to extend work from
the existing 220kV transmission line between Pul-e-
Khumri SS and Chimtala SS to provide electrical
power to customers and MoPW facilities at Salang
Tunnel.
• USAID will deliver the technical documents to DABS
and fund the work.
• DABS will solicit bids for the work and select an EPC
contractor.
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Field Investigation & Data Gathering
• Olang O&M Base
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
• Gawar Sang O&M base
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
• Aftanor O&M Base
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
• Northern Salang Tunnel O&M Base
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Substation at Northern Salang
1. Lack of
enough land.
2. Area prone to
avalanches.
3. Not recommended
by MoPW.
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Proposed Available Alternate Substation Sites
Aftanor Site #1:
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Aftanor Site #2:
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Aftanor Site #3:
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Northern Tunnel Site #1:
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Northern Tunnel Site #2:
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Selected Substation Site
1. Flat location,
minimized
cut/fill
2. Accessibility
3. Constructability
4. Less apron to
avalanches
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Substation Site Layout
1. All existing
buildings will be
demolished by
MoPW
2. Building
demolish is part
of contract
3. One
construction
season
4. Rubble
dumping by
MoPW
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Substation General Arrangement-GA
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
220kV Transmission Line Tap
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Single Line Diagram
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
20kV Distribution
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Contractor laydown area
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Timeline for construction
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Involved Parties
1. MoPW
2. Da Afghanistan Breshna Sherkat-DABS
3. USAID
4. ISAF
Agreement needed from MoPW and DABS to proceed
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PRELIMINARY, FOR DISCUSSION PURPOSES ONLY
Thank You!
Questions?