Amendment no. 1 to Tender Documents for:
NPWR/2015/06
TENDER FOR THE SUPPLY OF GROUND MEASUREMENT
STATIONS AND SERVICES FOR A CSP ROAD MAP AND THE
ESTABLISHMENT OF COMMERCIAL CSP PLANTS IN NAMIBIA
Volume A1: Instructions to Tender
1. Volume A1, section “1.9 Timeline for the Tender Process”
Update Table 1 to read:
Table 1: Timeline for Tender Process
ACTIVITY
DATE
Process up to submission of Technical Proposal
Tender published in the market
22 January 2015
Compulsory Tender clarification meeting
10 February 2015 at 10h00 at
Hotel Safari Conference Centre
Mandatory site visits
11 to 13 February 2015
Deadline for Clarification Requests
Tender Closing Date minus 14
days
Deadline for Amendments to Tender Documents
Tender Closing Date minus 7
days
Tender Closing Date: Stage one: Submission of
Technical Proposal
13 March 2015 at 12h00.
Process after the submission of Technical Proposal to Contract Award
Evaluation of Technical Proposals including Clarification
on Technical Proposals
Approx. 4 weeks
Update of Technical Proposals by Tenderers
Approx.1 week
Invitation to technically compliant companies to
participate in Stage two
Estimated date 3 April 2015
Tender Closing Date: Stage Two: Submission of
Financial Proposal and NEEEP information
2 weeks from invitation,
Estimated date 17 April 2015
Evaluation of Financial Proposal and NEEEP
information, including Clarification of Financial Proposal
and NEEEP information
Approx.2 weeks
Internal Approval
Approx. 2 to 8 weeks
(dependant on levels of
authority)
Shortlisting of Tenderers
Approx. 1 week
Negotiation
Approx. 1 to 2 weeks
Contract Award
Approx. 1 week
Volume A2: Particular Conditions and Schedule of Amendments
2. Volume A2, section “2 PARTICULAR CONDITIONS”
Update the Table to read:
SUBCLAUSE*
SUBJECT
DATA
1.1.11
Time for
Completion
Period for completion is 5 years from the
Commencement Date
Time for Completion is after five (5) years of
complete measurement data and reporting.
3. Volume A2, section “3 SCHEDULE OF AMENDMENTS TO THE GENERAL
CONDITIONS”
Update the Table to read:
CLAUSE
*
TITLE
AMENDMENT
3.4
Clients Property
3.4.2
Add new Sub-Clause:
Title in and ownership of the equipment supplied under this Contract
shall transfer to the Client at whichever is the earliest to occur of the
following times, free from liens and other encumbrances:
(a)
when it is delivered to the Site; or
(b) when the Consultant is entitled to payment of the value of the
relevant equipment pursuant to the Contract.
Regardless of any ownership or title transfer from the Consultant to the
Client under this Sub-Clause, the Consultant shall continue to bear the
risk of loss or damage for, to be obligated to insure to the extent
provided for in the Contract and to be otherwise responsible for the
equipment until the Time for Completion.
Volume B1: Specification for Solar Resource Measurement
1. Volume B1, section “8.2.1 Solar irradiance measurements”
Update Table 1 to read:
Table 2: DNI, GHI, GHI and GTI Measurements
Measured value
Unit
Instrument
Direct Normal Irradiance
(DNI)
W/m²
ISO first class pyrheliometer mounted on a solar
tracker and expected daily uncertainty of ±1%**
Global Horizontal
Irradiance (GHI)
W/m²
ISO secondary standard (thermopile) pyranometers
with expected daily uncertainty of ±2%**
Diffuse Horizontal
Irradiance (DHI)
W/m²
ISO secondary standard (thermopile) pyranometers
with shading disk and expected daily uncertainty of
±2%**
Global Tilted Irradiance
(GTI)*
W/m²
ISO secondary standard (thermopile) pyranometers
with shading disk and expected daily uncertainty of
±2%**
2. Volume B1, section “7 LOCATION OF MEASUREMENT SITES”
Update the table as follows:
Site name
GPS coordinate
Nearest town
Auas Site
S22° 35.358' E17° 21.872'
Dorabis / Windhoek
Power supply connection point
S22° 12.792' E15° 00.864'
Kokerboom site
S26° 25.550' E18° 17.297'
Keetmanshoop
Power supply connection point
S26° 25.419' E18° 17.251'
Arandis site
S22° 21.910' E15° 02.863'
Arandis town
3. Volume B1, section “8.5.6 Security and fencing”
Delete this section and replace the contents with the following:
If the ground measurement station is not located within a secure area, such as a
NamPower substation; the Consultant will provide a security fence around the
ground measurement station. The security fence shall:
•
be a 2m 6m fence, topped with barbed wire and locked gates
•
be sturdy enough to withstand the weight of a large animal which may rub
against the fence.
•
in no way shade the radiometer from DNI, GHI or GHI.
If the ground measurement station is not located within a secure area, the
Consultant will provide a security fence around the ground measurement
station. The security fence shall:
•
be a 2m 6m electrical fence with locked gates
•
be sturdy enough to withstand the weight of a large animal which may
rub against the fence.
•
in no way shade the radiometer from DNI, GHI or GHI.
4. Volume B1, section “8.7 Testing and Commissioning
Update paragraph 3 as follows:
As a minimum, a re-calibration/cross check of all pyrheliometer and pyranometers
shall be performed during commissioning of the ground measurement station with a
traveling station standard. A cross check in the field shall also be re-performed on
an bi-annual basis (every two years). The testing and commissioning report shall
include all sensor calibration coefficients.
5. Volume B1, section “9.2 Data accuracy requirements”
Add the paragraph below to section 9.2.
Any period of data loss will be added to the contract period. If the data loss
exceeds 3% on an annual basis, NamPower will review the contractual
conditions regarding the time to replace faulty equipment and the spare
keeping policy and the remedy thereof will be for the cost of the Consultant.
However, should the data loss exceed 5% of the total data collected on rolling
annual basis; this would be considered a material breach of the Contract.
6. Volume B1, section “17 END-OF-JOB REQUIREMENTS”
Delete this section and replace the contents with the following:
When testing and commissioning of the ground measurement station is complete, the
Consultant will provide the following:

Two (2) day training at engineer level for a maximum of twenty (20)
individuals to NamPower (and affiliates) on the ground measurement stations
including
(i)
selection, installation, configuration of sensors (applicable to all sensors
specified on this project)
(ii)
evaluation of precision and bias of each instrument
(iii)
interpretation of the measurements from each sensor
(iv)
selection, installation, configuration of the data loggers including the type of
data
loggers,
the
data
loggers
capabilities
and
communication
requirements
(v)
hands on training to obtain remote access to the ground measurement
station and to download the ground measurement station data
(vi)
calibration techniques for the ground measurement station and the
associated sensors
(vii)

testing and commissioning techniques for ground measurement stations
Two (2) day training at engineer level for a maximum of twenty(20) individuals
to NamPower (and affiliates) on the capturing, process and cleaning of the data
including:
(i)
quality control techniques
(ii)
data filing techniques
(iii)
soiling correction
(iv)
coherence testing
(v)
extrapolation and correlation techniques
(vi)
flagging techniques
(vii)
resource mapping (GIS Map production)
(viii) ground data versus satellite data relationship
(ix)
limitations of the data

operation and maintenance of ground measurement station

all documentation which was provided during the tender (see section 15)

sizing calculations, test certificates, layout and electrical schematic drawings and
data sheets of the ground measurement station including the power supply
arrangement
The general training on ground measurement stations shall be held in Windhoek where:

the venue of the training shall be arranged and paid for by NamPower

the travel and accommodation for Consultant’s staff shall be arranged and paid
for by the Consultant

the training manuals and training equipment required for the training
course shall be arranged and paid for by the Consultant
Three (3) hard copies and one (1) electronic copy of the end-of-job documentation
shall be provided to NamPower within 3 weeks of completion of testing and
commissioning of the ground measurement station.
7. Volume B1, section “20 ACCESS TO SITE”
Add new section and paragraph:
The Consultant may make use of the TransNamib service road to access the
ground measurement site at Arandis.
Note to Tender: NamPower will issue a further Amendment regarding the
Scope of Services involved in providing access to the ground measurement
site at Auas substation.