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Amended
Background Information Document
Proposed construction of the Xaris Gas Fired Power Plant and Gas Supply Facility in Walvis Bay
P u r p o s e o f t h i s d o c u m e n t :
This is the second version of the previous document circulated on
the 26th of February 2015. Its purpose is to elaborate on
amendments made to the project scope:
Enviro Dynamics has now been appointed to undertake an
Environmental Impact Assessment (EIA) process that is to
Equator Principles (EP) as well as the International Finance
Corporation (IFC) Standards.
Three separate EIA studies will be undertaken to assess the:
o Berthing area of the FSRU and transport of the gas from
the ship along a trestle jetty to the port premises
(including associated dredging activities);
o Overland pipeline from the port premises to the power
plant (including the port premises);
o Power plant including a purification plant to supply
process water from Birds Paradise.
The following components have been eliminated from the
project scope:
o The desalination plant is no longer the preferred
alternative for supplying water to the power plant.
o The FSRU ship supplier will conduct their own EIA for
the ship based processes including process water
discharge.
O v e r v i e w
Xaris Energy Namibia (Pty) Ltd proposes to import liquefied
natural gas (LNG) into the Walvis Bay area. It will be regasified
for use at a power plant that will be constructed approximately
10 km east of Walvis Bay. The development will consist of the
following components:
Floating Storage Regasification Unit (FSRU)
Light trestle and overland pipelines for transporting
the gas
Open cycle gas turbine power plant and water
purification plant.
Enviro Dynamics has now been appointed to re-do the
Environmental process so that it complies with the requirements
of the Equator Principles (EP) as well as the International Finance
Corporation (IFC) Standards.
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N e e d f o r t h e d e v e l o p m e n t
Electricity demand continues to grow and due to Namibia’s reliance
on procurement of power from other countries facing shortages
themselves, a supply deficit is expected over the short-medium
term (Key contracts expire in June 2016). To that end, NamPower
has appointed Xaris Energy (Pty) Ltd to develop a 300MW power
plant. The Proposed Project could potentially:
assist in ensuring security of power supply,
reduce Namibia’s reliance on electricity imports,
contribute through the development of gas infrastructure
from which various industries can leverage off, and
result in secondary spin-off benefits such as job creation in
construction and operation of the power plant.
have economic benefits to Namibia in that the electricity can
be sold to neighbouring countries.
P r o j e c t L o c a l i t y
The proposed locations of each of the project components are
illustrated in Figure 1. It includes in-land, coastal and marine
habitats of Walvis Bay in the Erongo Region of Namibia:
Liquefied Natural Gas (LNG) would be imported on an LNG
Carrier, transferred to a permanently moored FSRU located
approximately 2.4 km from the shore within the Walvis Bay
North harbour.
From the FSRU it is regasified and redistributed via a 2.4 km-
long trestle pipeline and 12.5 km over-land pipeline to the
power plant
The power plant is located on 40 hectares of land within the
proposed heavy industrial zone of the Walvis Bay Municipality
(Farm 58), just east of Dune 7.
What is Liquefied Natural Gas (LNG)?
It is natural gas (predominantly methane, CH4) that has been
converted to liquid form for ease of storage or transport. It is
odourless, colourless, non-toxic and non-corrosive. It is stored in
liquid form due to the reduced space that is required.
What is a Floating Storage Regasification Unit (FSRU)?
It is the vessel that is used for the storage and regasification of
natural gas by heating up LNG to its original gaseous state. The FSRU
will be permanently moored and will receive LNG via.
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nclude a map indicating the five
Figure 1: Project components and the location of each.
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1 . F l o a t i n g S t o r a g e R e g a s i f i c a t i o n
U n i t ( F S R U )
LNG is supplied from a LNG carrier (LNGC) that is moored
alongside the FSRU for the period of regasification.
The FSRU (Figure 3) is fitted with two 30cm high pressure gas
connections (one on either side) for delivery of high pressure
gas. Cooled LNG is transferred to the FSRU from the LNGC
via cryogenic (operated under low temperatures) flexible
hoses at flow rates up to 6,000 m3/h.
LNG is regasified on the FSRU through a process that
includes heating and compressing of LNG to 70 to 100 Barg.
FSRU would remain connected to the GasPort in the Single
Berth or Buoy configuration
Parameter LNG carrier FSRU
Cargo Capacity (m3) 173,400 151,000
Maximum Delivery: 589,935m3/h
The FSRU do not require any services to be provided and
operate independently from the port.
1.1. Jetty
The jetty will consist of:
o “Sea island” including Breasting Dolphins, Mooring
Dolphins, Loading Platform, Walkways, Quick Release
Hooks, Fenders, Navigational Aids, Utilities, Gangway
o Trestle & related pipelines from FSRU to Port Station
via a light trestle (Figure 2)
Will be a fixed structure of reinforced concrete deck on
piles.
1.2. Berthing and mooring systems
The Berthing Management System (BMS) will provide the
facilities for the vessel to dock, and will include functions
for met-ocean monitoring (weather forecasting, climate
studies, operations & safety, resource assessment,
maritime safety and marine domain awareness, among
others).
1.3. High pressure gas loading arm
Mounted at the FSRU berth.
Used to convey high pressure re-gasified LNG from the
FSRU to the jetty gas delivery point.
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1.4. Port premises
Houses the FSRU gas control room.
Footprint of approximately 110m x 120m to allow for back
pressure control equipment.
1.5. FSRU Safety and Exclusion Zone
200 m safety radius offset from other vessels in transit.
500 m safety radius between LNG vessels and other marine
infrastructure.
1.6. Dredging
The dredging scope for this project includes:
o Widening of the planned entrance channel to 230m
from entrance to the LNG berthing terminal.
o Dredging of a 265m radius turning circle for the LNG
ships.
o Dredging for the LNG berthing pocket.
o The entrance channel, the berthing pocket as well as
the turning basin have a minimum MLLW (mean lower
low water) depth requirement of 16.5m.
2 . P i p e l i n e s f o r t r a n s p o r t i n g L N G
Regasified LNG from the FSRU is distributed into a high-
pressure manifold linked to the high pressure loading arm,
which convey the gas into the gas pipelines transported via
the trestle to the port premises.
Parameter Trestle pipeline Overland
Location From the manifold to an
onshore metering terminal
at the port station
From the port premises to
the power plant
Description 2.4 km long carbon steel
pipeline along a trestle
structure (which will
accommodate the
electrical and instrument
cables.)
12.5 km long trenched,
carbon steel pipeline in
existing municipal
servitude, with a way leave.
Pressure 70 – 100 bar (gauge
pressure)
70 to 100 bar (gauge
pressure)
Flow rate 814,109.34m3/h 814,109.34m
3/h
Parameters minimum 15 cm in size 61 cm in size (provision for
future expansion)
A Safety Shutoff Valve (SSV) will be provided at the Power
Plant site boundary.
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3 . O p e n C y c l e G a s T u r b i n e P o w e r
P l a n t
3.1 Plant Layout
Footprint area of 40 ha in the proposed noxious and heavy
industrial zone of Walvis Bay.
6 gas turbine bays with 6 gas turbines (GTs) (General Electric
LM6000PC SPRINT machines) operating in open-cycle (heat
content of the exhaust gases exiting the turbine is discarded
instead of reusing it in a heat exchanger to preheat the
combustion air entering the combustor) generating 11.5kV
power.
Designed for an operational life of 25 years from the date of
commencement of commercial operation.
3.2 Plant Operations
Piped gas is supplied to the Plant’s gas receiving and
metering station.
42.2 – 49.4 MW of electrical power generated per turbine –
SPRINT Air-cooled technology used to cool the turbines and
keep temperature at 15°C.
Water injection is used for Nitrous Oxide (NOx) emission
control and evaporative cooling.
3.3 Power Generation and Distribution
Generated power to be distributed via a high voltage
220 kV substation located within the site boundary.
Two emergency diesel generators will be provided for
safe shutdown of Power station. The units shall consist of
a diesel engine directly coupled to a generator, mounted
on a common steel base with a fuel tank and a self-
contained enclosure. In case of failure of normal power
supply the diesel generators shall start automatically to
supply power to the essential loads of the power station
for a safe shutdown.
The power station shall be designed to allow operation
for limited periods in island mode (island mode operation
is defined as operation with the power station isolated
from the Namibian network, supplying its own auxiliary
equipment). This islanded mode would be sustained for at
least 20 minutes without tripping.
Plant will initially be sized to yield 300 MW of base load
power to the national grid of Namibia.
11.5 kV power generated per gas turbine is reticulated
using 11 kV single core cables in trefoil on racks to the
Generator Circuit Breaker and GSU.
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4 . W a t e r p u r i f i c a t i o n p l a n t
The construction of a desalination plant no longer forms
part of the project description.
Excess water from Birds Paradise will be pumped through
pipelines (approximately 10km) to the power plant.
A water purification plant will be constructed at the
power plant site treating the semi-purified water from
Birds Paradise to a quality required for the power plant.
Power plant water consumption: 500,000 m3/annum
The water from the purification plant will be used to
provide for service water demands and fire fighting.
5 . O t h e r s i t e i n f r a s t r u c t u r e
The Power Station will generate its own power, water
purification and a sewage plant will be constructed on
site.
During construction:
o Power will be provided by Xaris through generators or
by connecting to the Erongo RED supply.
o Water will be provided by Xaris via containers or by
connecting to the Walvis Bay council supply.
During operations the following will apply:
o Sewage will be a temporary facility supplied by the
Contractor (EPC)
o Temporary roads will be supplied by the Contractor
during construction
Water Reticulation network:
o Utility water for own use will be obtained from Bird’s
Paradise, purified and stored in utility water and fire
water tanks.
o Potable water shall be delivered on site by pipeline
from the municipal water supply authority. It shall be
piped to standpipes and buildings as required. Potable
water piping shall be HDPE, mechanically protected
where installed on pipe-racks.
Sewer network:
o Gas Turbine waste wash water and oily residue from
the oily water separator collected for removal and
disposal by a specialised contractor.
o Sewage to be treated on site using a packaged sewage
treatment plant.
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o Solid and construction wastes shall be collected,
stored and transported in accordance with the
applicable regulations and local authority’s
requirements.
Road network:
o Current access is available via M44 to the Power Plant
site. New roads for the industrial area are not
expected to be available in time.
o Permanent roads will have to be supplied through
Roads Authority (RA) or Council (or NamPort for port
premises) as required.
o NamPort Access roads are available for interim
period.
Figure 3: The FSRU vessel.
Figure 2: The light trestle jetty structure.
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I s s u e s i d e n t i f i e d
Potential environmental impacts on the inland and marine
environment affected by the construction and operation of the LNG
facilities include:
Potential Inland Impacts:
Air pollution associated with the construction and operation
of all facilities particularly the FSRU and power plant.
Noise and pollution from construction and operation
activities particularly during the operation of the FSRU.
The effects of leaks or ruptures in the gas pipelines.
Effect on the Walvis Bay airport due to electromagnetic
interference from the turbines at the power station and the
height of the structures.
Water balance and quality of water from Birds Paradise.
Potential Marine impacts:
The intake of water from the bay by the LNG Carriers and
FSRU.
Increased vessel traffic in the Walvis Bay Port area.
Disturbance of seabed communities during the construction
of the berths and trestle jetty.
Impacts associated with dredging activities e.g, Removal of
the bottom sediment and associated communities, increased
suspended sediment concentrations and turbidity during
construction and dredging.
Potential impacts on fisheries (e.g. mariculture, recreational
fisheries, through the movement of vessels and operation of
power-generation barges). Fish recruitment, migrations and
community health
Mariculture – both established and potential growth areas
based on current leased water areas in the bay.
Localised commercial fisheries and the large-scale fisheries in
the Walvis Bay area and the movement of fisher vessels
associated with these establishments.
Fish recruitment, migrations and community health. This
would apply to all fisheries resources exploited in the
proximity
E n v i r o n m e n t a l P r o c e s s
An Environmental Impact Assessment (EIA) study was completed by
an external consultant in 2014. However, the EIA has been
withdrawn by the client.
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Enviro Dynamics has subsequently been appointed to undertake
and environmental process that satisfies the requirements of the
Environmental Management Act (Act No. 7 of 2007) and its
regulations (2012) and complies with the requirements of the
Equator Principles as well as the International Finance Corporation
(IFC) Standards.
Performance standards
In order to qualify for these international standards, criteria are
prescribed in terms of social and environmental compliance. The
following Equator principles may apply to this project:
PS1 - Assessment and Management of Environmental and
Social Risks and Impacts
PS2 - Labour and Working Conditions
PS3 - Resource Efficiency and Pollution Prevention
PS4 - Community Health, Safety and Security
PS6 - Biodiversity Conservation and Sustainable Management
of Living Natural Resources
Environmental Assessment (EA) process
Due to time constraints and changed circumstances the proponent
has opted to treat the three major components of the project as
separate EIAs, with a combined public participation process and
separate Environmental Management Plans for each component:
Berthing area of the FSRU and transport of the gas from the
ship along a trestle jetty to the port premises (including
associated dredging activities);
Overland pipeline from the port premises to the power plant
(including the port premises);
Power plant including a purification plant for the refinement
of water from Birds Paradise.
The SFRU ship supplier will conduct their own EIA for the ship based
processes including process water discharge.
The approach with these EIA studies is to:
Undertake combined public consultation for the project as a
whole;
Establish the environmental risk of each project component,
its alternatives and various components based on the findings
of the specialist studies;
Prepare three separate EIA reports and EMPs;
Public review of the EIAs and EMPs;
Prepare and submit final documents to Directorate of
Environmental Affairs (DEA) and finance corporations for a
decision;
Communicate the decision to I&APs;
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Specialist Studies
Based on the required performance standards the following
specialist inputs have been initiated for the various project
components (separate EIAs):
EIA component Specialist input Specialist consultant
Berthing area of the FSRU and transport of the gas from the ship along a trestle jetty to the port premises (including associated dredging activities);
Evaluating sediment dynamics model for dredging of the FSRU berth and the trestle jetty foundations.
PRDW Consulting Port and Coastal Engineers
Evaluating marine ecology for the FSRU berth and trestle jetty.
Pisces Environmental Services
Air pollution dispersal models at the FSRU and OCGTPP Rayten Engineering Solutions
Overland pipeline from the port premises to the power plant (including the port premises);
Air pollution dispersal models at the FSRU and OCGTPP Rayten Engineering Solutions
Power plant including a purification plant for the refinement of water from Birds Paradise.
Air pollution dispersal models at the FSRU and OCGTPP Rayten Engineering Solutions
Noise pollution and dispersal model at the OCGTPP. Safetech
Water balance and quality of water from Birds Paradise Geo Business Pollutions
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P u b l i c p a r t i c i p a t i o n
All parties who may be affected directly or indirectly, or those who
are interested in the project, including those members that have
previously been registered, must be consulted about this proposed
development. Matters so raised will, amongst others, be addressed
as part of this Environmental process.
Your registration as an I&AP is a key component of the process.
Through your participation you actively take responsibility for the
utilisation of our legislation, as well as contributing to ensuring
responsible environmental management and decision making.
Registration will ensure that you are kept up to date with
developments in the process, and that you are invited to the
relevant meetings.
A public meeting is scheduled to which you are invited:
Date: Thursday, 12 March 2015,
Time: 18h00
Venue: Immanuel Ruiters Primary School, Kuisebmond,
Walvis Bay
If you have an interest in the project, you are invited to attend this
meeting. Additional meetings with the relevant authorities will
also be held in Walvis Bay and Windhoek.
Your role as a stakeholder/Interested & Affected Party (I&AP):
Attend meetings and obtain information about the proposed
project;
Raise any issues that you have in respect of the proposed
project;
Provide the proponents with additional information which
needs to be considered in the project design; process of
evaluating the impacts; and the decision making process; and
Review and comment on the draft reports prepared during this
Environmental process.
You can become involved:
by registering as an I&AP (this is necessary to ensure your
name is added to the contact list);
by submitting your comments or requests for information to
the stakeholder public participation team in Windhoek (see
registration form);
by attending consultation meetings; and
by reviewing the draft documents as they are circulated for
comment.
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Eloise Carstens
Tel: 061-223 336
Fax: 061-307 437
Email: eloise@envirod.com
Once you have registered you will be added to our stakeholders list
and included in all further communication regarding the project.
To register:
Fax or e-mail your request to Enviro Dynamics or inform the
consultant at the consultation meetings.
Contact us to express your interest in this project before the
19th of March 2015.
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