E2910GXMWPRManufacture of Chemicals and Chemical ProductsOfficial Source: eTendersSource-Backed TenderDocument-Backed
Manufacture, supply, delivery and off-loading of molten sulphur (liquid sulphur) to various ESKOM coal fired power stations on an “as and when” required basis for a period of 5 (five) years
Various power stations - Various power stations - Various power stations -
Organization Type
GOVERNMENT
Published
18 Jun 2026
OCDS Reference
ocds-9t57fa-159306
Summary
This tender is for the supply, delivery, and offloading of liquid sulphur to ESKOM coal-fired power stations over five years. The sulphur is required for flue gas conditioning to improve electrostatic precipitator performance and reduce particulate emissions. The contract is awarded on an 'as and when' required basis.
Key Requirements
• The tender is for a 5-year contract (FY2027-FY2031) to supply liquid sulphur to multiple ESKOM power stations on an 'as and when' basis. • Bidders must meet strict sulphur purity and impurity specifications, including purity ≥99.5% And limits for carbon, moisture, h2s, arsenic, selenium, tellurium, and fluorine. • Mandatory criteria include proof of sulphur purity compliance, an approved transport and emergency response procedure, and a valid iso 14001 certificate; failure on any results in disqualification. • Technical evaluation requires a minimum weighted score of 70%, with qualitative criteria covering specification compliance (50% weighting), transport capacity (30%), and technical assurance (20%). • Suppliers must maintain sulphur at ≥120°c during transport using heated tankers and provide evidence of delivery lead times, dedicated tanker numbers, and tanker cleaning procedures. • All supporting documents, including method statements, quality control manuals, and sample certificates, must be submitted with the tender or risk zero scores. • Anticipated monthly consumption per station is provided (e.g., 190 tons for kendal), with notes on potential station shutdowns and phased supply commencement.
Tender Description
Manufacture, supply, delivery and off-loading of molten sulphur (liquid sulphur) to various ESKOM coal fired power stations on an “as and when” required basis for a period of 5 (five) years
Briefing SessionCompulsory
Date & Time
Monday, 13 July 2026 - 10:00
Venue
null
Important: Attendance at this briefing session is mandatory. Bids from suppliers who do not attend may be disqualified.
Review in progress · 0 of 1 documents being finalised
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DocumentAnnexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdfReview complete
Description
Important Dates
18 Jun
2026
PUBLICATION
Tender Published
Tender was published
13 Jul
2026
DEADLINE
Closing Date
Tender closing date
Procurement Rules & Compliance ContextThis tender may be governed by South African public procurement rules covering fairness, transparency, preferential procurement, anti-corruption, administrative justice and access to information.
7 rules
These references help suppliers understand the public-procurement framework around this opportunity. They are generated from the tender category, issuing organisation type and procurement context.
Core procurement rules
These rules commonly apply to South African public-sector procurement.
7
Broad-Based Black Economic Empowerment Act (B-BBEE Act)
Act 53 of 2003
high
Provides the empowerment-compliance context often used in public-sector supplier evaluation.
Relevant because this is a South African public-sector procurement opportunity.
Constitution of the Republic of South Africa, 1996 – Section 217
Act 108 of 1996 (s217)
high
This is general procurement context, not legal advice. Always verify requirements in the official tender documents and issuing authority notices.
Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf
Eskom seeks a 5-year contract for the supply, delivery, and offloading of molten sulphur to multiple coal-fired power stations. The sulphur is used for flue gas conditioning to improve electrostatic precipitator performance and reduce particulate emissions. The tender includes strict technical specifications and a detailed evaluation strategy.
Bid-ready summary. The submission guidelines, evaluation criteria, technical, financial, and compliance sections are refined into professional, easy-to-scan prose. This is the final version you can rely on when preparing your bid or briefing your team.
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Document read
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Bid-ready summary
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf
This is a technical evaluation strategy for the supply, delivery and offloading of liquid sulphur to various Eskom power stations for the period FY2027 to FY2031.
The sulphur is used for flue gas conditioning (FGC) to improve electrostatic precipitator (ESP) performance, reducing particulate emissions.
South African coals used for power generation have low sulphur content (~1%) and high ash, requiring additional SO3 injection to reduce ash resistivity in ESPs.
The full scope includes procurement/manufacture, quality testing, temperature maintenance, transport in heated tankers, and offloading.
Contact Information
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf (unknown)
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf (unknown)
Mandatory: 1) Written confirmation of sulphur purity ≥99.5% compliance. 2) Approved company procedure for Transport and Emergency/Accident Response Preparedness. 3) Valid ISO 14001 certificate. A 'NO' to any mandatory criterion results in technical disqualification. Bidders must also achieve a minimum weighted final technical score of 70% based on qualitative criteria.
Technical Specifications
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf (unknown)
Scope: Supply, delivery and offloading of liquid sulphur to various Eskom coal-fired power stations on an 'as and when' required basis for 5 years (FY2027-FY2031).
Purpose: To improve electrostatic precipitator (ESP) performance via flue gas conditioning (FGC) to reduce particulate emissions.
Required liquid sulphur specification:
Purity: 99.5-99.9% by mass
Carbon content: ≤0.3% by mass
Moisture (H2O): ≤0.5% by mass
H2S: ≤10 mg/kg
Arsenic: ≤1 mg/kg
Selenium: ≤1 mg/kg
Tellurium: ≤1 mg/kg
Fluorine: ≤1 mg/kg
Minimum scope includes:
Procurement/manufacture of sulphur.
Testing of sulphur quality.
Maintaining a minimum sulphur temperature of 120°C to keep it liquid.
Transport and delivery in suitable heated tankers.
Offloading at various sites.
Anticipated consumption (monthly, at 70% confidence level) per power station:
Duvha: 83 tons
Kendal: 190 tons
Kriel: 124 tons
Lethabo: 182 tons
Matla: 226 tons
Matimba: 184 tons
Tutuka: 185 tons
Notes:
Tutuka supply anticipated to commence from August 2027 (TBC), increasing as SO3 Plant retrofit completes.
Kriel may commence shutting down units between May 2027 and March 2030.
Experience & Qualifications
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf
The Technical Evaluation Team (TET) members are delegated engineers/technical specialists responsible for reviewing and evaluating technical aspects of the tender.
Quality Management
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf
The scope requires testing of sulphur quality.
References include ISO 9001 Quality Management Systems.
For technical assurance, bidders must provide method statements and quality control manuals as evidence.
Proof of product conformity requires a sample certificate showing analysis and quality control manuals detailing how conformity is managed.
Compliance Requirements
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf (unknown)
Mandatory: Provide a valid certificate of compliance or accreditation to ISO 14001 (Environmental Management System).
The Preferential Procurement Policy Framework Act (PPPFA) is referenced.
Technical Evaluation Team (TET) members are responsible for reviewing and evaluating technical aspects.
Health & Safety
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf
The mandatory criteria require an approved company compliance procedure for Transport and Emergency/Accident Response Preparedness to ensure safe and sustainable transport.
Environmental
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf
The tender supports flue gas conditioning (FGC) to improve electrostatic precipitator (ESP) performance, resulting in lower particulate emissions.
A mandatory requirement is a valid certificate of compliance or accreditation to ISO 14001 (Environmental Management System).
Requirements
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf (unknown)
Mandatory Technical Evaluation Criteria:
Provide written confirmation or proof of compliance that sulphur purity is ≥99.5%.
Provide an approved company compliance procedure for Transport and Emergency/Accident Response Preparedness.
Provide a valid certificate of compliance or accreditation to ISO 14001.
TET Member Responsibilities:
All TET members evaluate compliance to specification, transport/emergency preparedness, and delivery tanker sulphur temperatures (>120°C).
All TET members evaluate qualitative criteria: compliance to Eskom specification, transport capacity and capability, and technical assurance.
Acceptable/Unacceptable Risks:
Unacceptable technical risks include product not according to specification and delivery schedule not being met.
Section
Source: Annexure L_ 474-13867 Technical Evaluation Strategy for Liquid Sulphur to Various Power Stations for Period FY2026 To FY2031 (Rev 1) Signed.pdf
The minimum weighted final technical score required to pass is 70%.
Mandatory criteria (failure on any results in disqualification):
Provide written confirmation or proof of compliance that sulphur purity is ≥99.5%.
Provide an approved company compliance procedure for Transport and Emergency/Accident Response Preparedness.
Provide a valid certificate of compliance or accreditation to ISO 14001.
Qualitative criteria (weighted scoring):
Compliance to Eskom Specification (50% weighting): Score based on meeting all eight purity and impurity limits (Purity ≥99.5%, Carbon ≤0.3%, Moisture ≤0.5%, H2S ≤10 mg/kg, Arsenic ≤1 mg/kg, Selenium ≤1 mg/kg, Tellurium ≤1 mg/kg, Fluorine ≤1 mg/kg). Provide a specification sheet or confirmation letter as evidence.
Transport Capacity and Capability (30% weighting):
Lead time (50% sub-weight): Score based on delivery lead time (<3 days=100%, 3-6 days=80%, >6 days=40%, no lead time=0%). Provide evidence of previous/current monthly deliveries.
Number of dedicated tankers (10% sub-weight): Score based on number of tankers (5 tankers=100%, 4=80%, 3=40%, <3=0%). Provide evidence of previous/current dedicated tankers.
Product temperature maintenance ≥120°C (40% sub-weight): Yes/No score. Provide tanker details including heating mechanism.
Technical Assurance (20% weighting):
Assurance that all tankers are cleaned prior to loading (60% sub-weight): Score based on dedicated tankers (100%), washing facilities at depot (80%), or neither (0%). Provide a method statement.
Proof of product conformity with deliveries (40% sub-weight): Yes/No score. Provide a sample certificate showing analysis and include quality control manuals.
Note: All method statements and quality control manuals must be submitted as evidence. Failure to submit results in a zero score for that criterion.
Sets the constitutional standard for fair, equitable, transparent, competitive and cost-effective public procurement.
Relevant because this is a South African public-sector procurement opportunity.
Various power stations - Various power stations - Various power stations -
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