· Web viewinformation for the works/goods/services as stated in the table. This RFI is a stand-alone information-gathering and market-testing exercise, intended only to inform and

Request for Information (RFI)

Unique Identifier240-72663051

Revision Rev. 1

Revision Date Aug 2019Group Technology and

Commercial

EOI / RFI no PS(M)2017/AG/02

PART AFOR INFORMATION(RFI)

Description of the works/goods/services

Interested parties are invited to participate in an RFI process for the purposes of providing information on possible Advanced Oxidation Process, specifically, but not limited to, Catalysed Hydrogen Peroxide/Ultraviolet (UV) organic removal systems on raw water for Medupi Power Station

Deadline for submission 15 January 2018 At (South African Standard Time)

14:00

Tender Office address Matimba Power Station Main Gate, Nelson Mandela/Stockpoort Road, Lephalale.

Eskom Holdings SOC Ltd (“Eskom”) invites you to submit a:

Request for information (RFI) to submit information for the works/goods/services as stated in the table. This RFI is a stand-alone information-gathering and market-testing exercise, intended only to inform and assist Eskom’s further deliberation and development of a strategy for the Procurement and Installation of an Advanced Oxidation Process(AOP; preferably Catalysed Hydrogen Peroxide/Ultraviolet (UV), but alternatives will be considered, excluding organic scavenging resins) organic removal system at Medupi Power Station.

1 INTRODUCTIONMedupi Power Station will be required to receive and treat raw water with elevated organic concentrations. The raw feed water is initially treated to potable water standards, and thereafter the major portion will be further treated to high purity demineralised water quality for steam/water process requirements on supercritical boiler units. The water treatment plant consists of clarification, ultrafiltration, membrane demineralisation (in the form of a double pass {permeate staged} reverse osmosis process), gas transfer membranes and continuous electro-deionisation (CEDI) (as polishing of the demineralised water).

The membranes utilised throughout the treatment process have low tolerance to organics (specifically humic acids and biopolymers) necessitating the inclusion of an organics removal system in the Water Treatment process. A request is therefore being made for information on solutions for organic removal in natural raw water from the Crocodile West water system, noting the seasonal variations in the loading.

240-72663051 EOI/RFI CONFIDENTIAL TE – Group Technology & Commercial

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2 BACKGROUND

2.1 OBJECTIVE

The aim of this Request for Information (RFI) is to determine whether there are suppliers/contractors in the market that are capable of providing a solution to the delivery and construction of an Advanced Oxidation Process, preferably based on Catalysed Hydrogen Peroxide/Ultraviolet oxidation system (but alternatives may be proposed) , with the necessary ancillary equipment, together with the estimated costing.

The location of the system, post clarification prior to Ultrafiltration vs post ultrafiltration, depends on the capability of the proposed organic removal process.

2.2 SCOPE

The requirements for the organics removal system are as follows:

1) A detailed raw water statistical analysis is provided in appendix A. (sampled monthly)2) The characterization of the organics is provided in Appendix B.3) Approximately 20% of the Humic acids (about 44% of TOC) are expected to be

removed across the clarifiers. 4) The organic removal system is required to remove as much of the remaining humics

as possible to an absolute outlet maximum of 5ppm TOC, as well as 100% of the biopolymers. The Contractor shall indicate thequality of the outlet stream following the organic treatment process as per the characterization indicated in the table in Appendix B

5) The contractor is expected to propose the best suitable location for the organic removal technology. A process flow diagram of the currently installed Medupi Water Treatment Plant is attached: Appendix B. It shall be noted that it was the Employers initial intent to install organic scavengers downstream of the UF, however alternative locations that will suit the entire water treatment process shall be considered.

6) The feed flowrate requirements are as follows: UF inlet is 1500m3/hr, UF outlet is 795m3/hr

7) Provide information on turndown capacity of the system8) Provide information on the estimated volumes and quality of waste streams

generated9) Provide a process flow diagram of the system clearly defining the battery limits10) Provide a process description with high level operating philosophy of the system11) Highlight any process constraints / limits that impact the operation of the system. 12) Indicate utility requirements (chemicals, power, water, air, etc.)13) Indicate if the proposed system will be compatible with Alstom software programs14) Provide details of the footprint / civil requirements


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15) Provide case studies and information on reference plant where the technology has been employed with process information showing plant performance

16) Provide a budget capital cost for installation (mechanical, civil, and electrical work must be included).

17) Provide a budget operating cost for the system18) Provide information on the expected maintenance requirements regarding lifespan of

consumable items, etc. where applicable. 19) Indicate the estimated lead time for the delivery of the equipment.20) Indicate any exclusions from Contractor’s supply

2.3 SITE INFORMATION

It must be noted that Medupi is a construction as well as an operating site, i.e. there are certain systems in service. The Water Treatment Plant is one of the plants in operation. The expectation is the AOP system must be designed and constructed with minimal requirements for tie-in (limited downtime on the water plant). The site conditions are provided under Appendix B.Any site information not provided but required for the design and operation of the system shall be evaluated and/or obtained by the supplier.

3 SUBMISSION OF INFORMATION

To ensure the receipt of communication with regard to this Request for Information process, kindly complete Appendix A - Acknowledgement form.

3.1 METHOD OF DELIVERYEskom Tender Office:

Matimba Power Station Main Gate,

Nelson Mandela/Stockpoort Road, Lephalale.

All RFI responses must be clearly marked as follows:

Ref number: PS(M)2017/AG/02

Closing date: 15 January 2018

Closing time: 14h00.

Respondent’s return address on a label outside the submission


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PLEASE NOTE: NO LATE SUBMISSIONS WILL BE ACCEPTED.

3.2 FORMAT OF SUBMISSION;Each RFI response shall be supplied in printed and in electronic format. All printed and electronic copies of each submission shall be identical to the original submission identified as follows:

1 x “Original RFI”

1 x “Copy RFI1”

1 x “Original RFI- electronic copy”

PLEASE NOTE: ANY SUBMISSION NOT CONTAINING THE REQUESTED COPIES WILL BE DISQUALIFIED.

3.3 IMPORTANT NOTES

(i) Due to the specific need that this RFI process has to fulfil, Eskom wishes to clarify that this request is not intended to impede, amend or replace any current or future procurement process that Eskom has engaged in or will engage in.

(ii) Eskom reserves the right, in its absolute discretion, at any stage and without notice, to terminate further participation in the process by any Party, to select or disqualify any interested participant from further engagement, to amend and/or terminate this RFI process or any future process pursuant to this process.

(iii) This RFI is a stand-alone information-gathering and market-testing exercise, intended only to inform and assist Eskom in an investigation currently being carried out for an existing project. All respondents, participates herein on the basis that it is providing information voluntarily to strengthen a potentially beneficial process for all stakeholders.

(iv) Any and/or all information submitted by any and/or all respondents may be used in the development of this intended solution, without the necessity of


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acknowledging the source, and without such entity gaining any rights in respect of such a solution, including but not limited to any intellectual property rights.

(v) No portion of any of the information submitted will be treated as confidential and respondents should NOT submit sensitive or confidential, market or commercial information. The intention is to gather broad and general information to inform the way forward on more concrete processes.

(vi) Any information provided pursuant to this RFI process and any subsequent processes and/or engagement is not confidential but Eskom will use the information only in the course of its process of carrying out an investigation for an existing project. Through making a submission a respondent accept the terms and conditions which governs this process.

(vii) If any clarification is required on the information submitted by the respondent, all clarification answers and comments will be published on the Eskom tender bulletin web-site and the National Treasury e-tendering web-site.

(viii) All participants responding to this RFI process need to ensure that they have received all information and remain solely responsible for satisfying themselves as to the information required in responding hereto and are fully responsible for all costs incurred in relation hereto and under no circumstances will any resultant cost be borne by Eskom.

Eskom has delegated the responsibility for this RFI to the signatory of this document, whose details can be found below.

We look forward to receipt of your response.

Yours faithfullyName Designation Signature DateAnsie Gous Senior

Procurement Advisor

1 December 2017

Telephone number

014 762 2489 Fax and/or e-mail address

[email protected]


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PART BRESPONSE SHEET IN TERMS OF A REQUEST FOR A REQUEST FOR INFORMATION

To be completed by the supplier

To Eskom Holdings SOC Ltd Date [insert today’s date]

Attention [insert name of Procurement Practitioner as it appears in Part A]

Tel no [insert your tel number] Fax no and /or e-mail address

[insert your fax number and/or e-mail address]

From [insert the registered full legal name of the company]

Address [

Address insert the physical address of the company]

Sender [insert the full name of the sender at the company]

Description of the works/goods/services

Interested parties are invited to participate in an RFI process for the purposes of providing information on possible Advanced Oxidation Process, specifically, but not limited to, Catalysed Hydrogen Peroxide/Ultraviolet (UV) organic removal systems on raw water for Medupi Power Station

Please find below our response to Eskom’s questions:

No. Question Please indicate your response in this column

1. [your contact name and contact details]

2. [Company registration number]

3. [brief description of previous experience and Description of the solution that you can offer]

4. Process flow diagram5. Process description6. 1) Indicate utility requirements (chemicals,


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power, water, air, etc.)

7. Provide information on the expected maintenance requirements regarding lifespan of consumable items, etc. where applicable.

8. Indicate the estimated lead time for the delivery of the equipment.

9. Provide details of the footprint / civil requirements10. Provide case studies and information on

reference plant where the technology has been employed with process information showing plant performance

11. Provide a budget operating cost for the system12. Indicate any exclusions from Contractor’s supply13. Provide a budget capital cost for installation

(mechanical, civil, and electrical work must be included).

14. Indicate if the proposed system will be compatible with Alstom Control programs

Yours faithfully

Name Designation Signature Date[insert your full name/s] [Insert your full

designation]Telephone number Fax and/or e-mail

address


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StatisticpH EC mS/m Ca mg/l Mg mg/l Na mg/l K mg/l MALK mg/l Cl mg/l SO4 mg/l NO3N mg/l F mg/l COD mg/l

Nbr. of observations 31 31 31 31 31 31 31 31 31 31 31 31

Minimum 7.360 47.800 15.000 12.000 43.000 7.000 128.000 0.005 50.810 0.020 0.070 3.000

Maximum 10.180 98.500 59.000 37.000 87.000 13.000 224.000 130.000 99.770 2.660 0.390 52.000

1st Quartile 7.715 70.950 37.500 24.000 61.000 8.200 175.750 73.540 71.870 0.440 0.170 12.000

Median 8.150 75.100 44.000 26.400 67.000 8.900 207.500 84.480 78.200 1.320 0.255 21.000

3rd Quartile 8.465 84.450 52.000 30.500 70.000 10.000 212.250 95.810 87.185 1.698 0.325 27.500

Mean 8.253 76.110 43.045 26.690 65.967 9.068 194.500 79.714 79.369 1.179 0.253 22.037

Standard deviation (n-1) 0.744 13.101 11.262 5.646 8.857 1.339 28.133 33.721 11.937 0.798 0.096 13.518

Statistic Fe(total) mg/l

Mn mg/l Cr mg/l Ca Hardness mg/l

Mg Hardness mg/l

Total Hardness

Al mg/l Zn mg/l NO2(N) mg/l

PO4mg/l Ba Bmg/l

Nbr. of observations 31 31 31 31 31 31 31 31 31 31 31 31

Minimum 0.030 0.010 0.010 37.460 49.390 86.840 0.010 0.010 0.060 0.100 0.010 0.030

Maximum 2.100 0.560 0.010 147.350 152.260 292.120 2.800 0.100 0.660 0.400 0.290 0.440

1st Quartile 0.048 0.023 0.010 93.660 98.770 193.235 0.055 0.013 0.220 0.125 0.078 0.060

Median 0.220 0.065 0.010 109.890 108.640 221.890 0.200 0.020 0.285 0.200 0.090 0.080

3rd Quartile 0.315 0.210 0.010 129.870 125.515 256.635 0.310 0.030 0.365 0.300 0.100 0.100

Mean 0.328 0.144 0.010 107.841 110.368 218.195 0.397 0.031 0.313 0.228 0.091 0.097

Standard deviation (n-1) 0.498 0.161 0.000 28.482 24.116 51.162 0.716 0.029 0.202 0.102 0.048 0.083


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Statistic Reactive silica as SiO2

SiO2 Turbidity TSS Alkalinity Total

Nickel as Ni

Cu Co TOC TDS

Nbr. of observations 31 31 31 31 31 31 31 31 31 31

Minimum 0.094 0.160 0.619 14.730 73.800 0.005 0.005 0.010 4.290 101.700

Maximum 15.460 16.000 127.000 4922.100 224.000 0.010 0.060 0.010 17.800 700.500

1st Quartile 3.745 3.900 4.805 32.890 172.000 0.005 0.010 0.010 7.490 403.700

Median 8.220 9.300 13.700 57.590 207.000 0.005 0.010 0.010 9.010 446.900

3rd Quartile 10.210 13.000 28.500 104.535 212.000 0.008 0.020 0.010 11.000 503.000

Mean 7.271 7.993 22.447 265.719 185.365 0.007 0.019 0.010 9.335 443.872

Standard deviation (n-1) 4.342 5.082 29.769 935.174 39.454 0.003 0.018 0.000 3.249 105.342


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Appendix B: Characterization of the Organics on Crocodile West Water

Crocodile WestDOC (ppm) 5.90Hydrophobic (%) 0.00Hydrophilic (%) 100Biopolymers (%) 16.8Humics substances (%) 50.5Building blocks (%) 17.6LMW neutrals (%) 15.1LMW acids (%) 0.00

SUVA 254 Lmg-1m-1 2.44



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C4: Site InformationGeneral

The Project Site for Medupi Power Station is situated approximately 15km west of the town of Lephalale which is located in the Limpopo province of South Africa. The approximate location and access routes are shown in the following figure.

Climate

Lephalale is situated in the summer rainfall area of the Waterberg. It has a climate of hot summers and fairly cool winters which is typical of that of the Limpopo province.

The climate of the area is semi-arid, with a mean annual rainfall at Lephalale of about 550 mm. Temperatures are high, with the mean daily maximum approaching 30°C and the absolute maximum exceeding 40°C.

The official Weather Bureau’s general description of the climate in the Limpopo Province is as follows: “The climate is semi-arid and hot in the Limpopo and Olifants River basins but more humid and somewhat cooler on the Waterberg plateau and Soutpansberg. Days are often very



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oppressive in summer, whereas winter nights can occasionally be decidedly cold. Frost is rare but occurs on the average during the months June to August.”

The nearest official weather station is situated at Marnitz, the climate of which is reasonably representative of the Lephalale area. Any further specific details of the local climate are obtainable from the Weather Bureau.

Barometric Pressure

The mean barometric pressure is approximately 896 to 899 hPa, which equates to + 900 metres above sea level.

Temperature and Humidity

The following is average temperature and humidity data was obtained from SA Weather Services: 1.5m level.

2005 data, 1.5 m AGLMax recorded temperature =41.5 C

Average temperature = 22.5C

0

100

200

300

400

500

600

0 5 10 15 20 25 30 35 40 45

Temperature

Hou

rs p

er a

nnum

0

10

20

30

40

50

60

70

80

90

Hum

idity

%

Rainfall

Average rainfall, mainly occurring as a result of thunder storms, ranges from 380mm in the north to just over 700mm on parts of the Waterberg.

The rainy season is generally from November to March with the peak season falling in January. Between 50 and 80 rain days per year can be expected. The rainfall is somewhat unreliable and



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rather severe drought conditions occur 12% of all the years

Prevailing Winds

Wind data obtained from the SA weather services for the periods 2002 – 2003 and 2004 – 2005 are shown in the following figures:

Day 2002-20036:00-21:00, Max average speed for 1 hour = 7 m/s

Calm = 18.15%

01

2

3

4

56

7

8

90

22.5

45

67.5

90

112.5

135

157.5

180

202.5

225

247.5

270

292.5

315

337.5

.5-2.5 m/s2.5-5 m/s5-7 m/s7-10 m/s

Night 2002-200322:00-5:00

Calm=46.59%

0

2

4

6

8

10

12

140

22.5

45

67.5

90

112.5

135

157.5

180

202.5

225

247.5

270

292.5

315

337.5

.5-2.5 m/s2.5-5 m/s5-7 m/s7-10 m/s



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2004-2005 dayMax speed recorded = 27 m/s

Calm 21.68

0123456789

0

22.5

45

67.5

90

112.5

135

157.5

180

202.5

225

247.5

270

292.5

315

337.5

.5-2.5 m/s2.5-5 m/s5-7 m/s

2004-2005 nightCalm = 55.32%

0123456789

100

22.5

45

67.5

90

112.5

135

157.5

180

202.5

225

247.5

270

292.5

315

337.5

.5-2.5 m/s2.5-5 m/s5-7 m/s

C4.1: Information about the site at time of tender which may affect the work in this contract

1. Access limitations

Arrangements must be made with Employer so that access can be gained without any restriction/ constraints to work onsite that may not be immediately apparent from an inspection of the site.

2. Ground conditions in areas affected by work in this contract



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N/A

3. Hidden and other services within the site

N/A

4. Details of existing buildings / facilities which Contractor is required to work on

N/A

Documents

· Web viewinformation for the works/goods/services as stated in the table. This RFI is a stand-alone information-gathering and market-testing exercise, intended only to inform and