Repairs to wa16 ash conveyor head station at lethabo power station

The Eskom Supplier Integrity Pact applies to Eskom Holdings SOC Ltd and all wholly owned subsidiaries, and to all existing and potential suppliers. It requires suppliers to act ethically and with integrity, and to complete, sign and submit the Integrity Declaration Form for every Eskom procurement process. The pact supplements other Eskom commercial and ethics policies.

Ethics reporting:

• Email: [email protected]
• Email: [email protected]
• Toll-free hotline: 0800 11 27 22

Returnable documents:

• Integrity Declaration Form: must be completed, signed and submitted for every Eskom procurement process. It incorporates a Declaration of Fair Tendering Practices and requires disclosure of any interest or affiliation with Eskom employees/directors.

Suppliers must comply with the Eskom Supplier Integrity Pact. Contravention may lead to suspension from the Eskom Vendor Database and referral to National Treasury for inclusion on the List of Restricted Suppliers.

This document is the Eskom Supplier Integrity Pact, applicable to Eskom Holdings SOC Ltd and all wholly owned subsidiaries, and to all existing and potential suppliers. It prescribes ethical behaviour and integrity in all business dealings with Eskom.

Suppliers must:

• Maintain an impeachable standard of integrity and prevent dishonest, fraudulent, corrupt or illegal practices.
• Be familiar with Eskom's publicly available policies, procedures and codes, including the Standard Conditions of Tender.
• Not disclose confidential information without consent; a Non-Disclosure Agreement (NDA) is required.
• Not misrepresent information or submit false or forged documents.
• Disclose any interest or affiliation with Eskom employees/directors that may affect tender decisions.
• Not offer gifts or business courtesies exceeding R1 500 in value.
• Not collude with other tenderers or engage in bid rigging.
• Report any dishonest, fraudulent or inappropriate behaviour by Eskom employees/directors to the Eskom Ethics office or Forensic office.

Suppliers must not offer gifts or business courtesies exceeding R1 500 in value. Suppliers must avoid unethical or fraudulent dealings with Eskom employees/directors involved in evaluation, adjudication or negotiation. Suppliers must report any unethical behaviour by Eskom employees to the Eskom Ethics office ([email protected]), Forensic office ([email protected]), or the toll-free hotline 0800 11 27 22.

System support: contact the buyer responsible for the specific published tender (no central helpdesk details provided).

Automated submission notifications: sent from [email protected] (Eskom E-Tender Document Submission).

Submission method: electronic upload via Eskom eTendering portal (https://eTendering.eskom.co.za).

Registration prerequisite: suppliers must register on the portal using a valid email address, cellphone number (format +27...), and a CSD number; OTP verification is sent to both email and cellphone.

File upload: click "Create New Submission", then "Add file" for each document; assign a file name and select the correct category (Technical, Commercial, Finance, etc.).

File size limits: individual file ≤ 50 MB; total upload ≤ 900 MB.

Finalisation: after all required documents are uploaded, click "Finalize Submission", then "Finalise and Close Submission". A confirmation email with submission ID is sent automatically — retain it for future enquiries.

Profile maintenance: use "Edit Registration" to update name, organisation, CSD number or cellphone number.

Password reset: "Forgot your password" initiates an OTP-based reset to the registered email or cellphone.

Browser: compatible with most browsers; Microsoft Edge recommended.

Platform: Eskom eTendering system — a web-based portal that replaces physical tender submission at Eskom offices.

Access points:

• Tender Bulletin public site: https://tenderbulletin.eskom.co.za (view published tenders, link to eTendering).
• eTendering public site: https://eTendering.eskom.co.za (view tender information and submit documents).

Authentication: registered email, password, and OTP sent to registered cellphone and email.

Submission workflow: register → verify email → login → OTP verification → select tender reference → create submission → upload categorised files (Technical, Commercial, Finance, etc.) → finalise submission → receive confirmation email with submission ID.

File categories: Technical, Commercial, Finance, and other listed types.

File size limits: 50 MB per file, 900 MB total.

Closed tenders: a separate "add closed tenders" function allows invited suppliers to bid privately via an emailed link.

Submission workflow:

1. Register on the eTendering portal (complete all fields, cellphone in +27 format, pass CAPTCHA).
2. Verify email via link sent to registered address.
3. Login with verified email and password.
4. Enter OTP sent to registered cellphone and email; click "Verify OTP".
5. On landing page, select the required tender reference number.
6. Click "Create New Submission"; note disclaimers.
7. For each document: click "Add file", provide a file name, select the correct category (Technical, Commercial, Finance, etc.), choose the file, click "Upload".
8. Verify all required documents are uploaded under correct categories.
9. Click "Finalize Submission" (individual file ≤ 50 MB, total ≤ 900 MB).
10. Confirm via pop-up, then click "Finalise and Close Submission".
11. Confirmation email with submission ID and timestamp is sent automatically; retain for enquiries.
12. View past submissions via "My Submissions" → "View Submission".

Profile updates: use "Edit Registration" to modify name, organisation, CSD number, or cellphone number.

Password reset: "Forgot your password" → enter alternative email → follow reset link → enter new password → confirm via OTP.

Logout: click "Log out" on the user dropdown.

Mandatory: valid CSD (Central Supplier Database) number to register and access the eTendering portal.

Registration data: legal name, organisation, CSD number, cellphone number (international format +27...), email address.

No B-BBEE, CIDB, tax clearance, or other compliance certificates are mentioned in this manual — those are tender-specific and appear in individual tender documents.

For system difficulties with Tender Bulletin, eTendering, or OpenText: contact the buyer responsible for the specific published tender (no generic support contact provided).

Automated submission confirmation emails originate from: [email protected] (Eskom E-Tender Document Submission).

Compliance requirements

OHS standards and legislation

• Eskom contractor Health and Safety requirements standard 32-136
• Project-specific OHS specification/requirements
• Occupational Health and Safety Act (Act 85 of 1993)
• Compensation for Occupational Diseases and Illnesses Act (Act 130 of 1993)

Post-award alignment

• The contractor must align its processes to Eskom's OHS requirements (policies, procedures, standards) after contract award.

Penalties

• Penalties will be enforced on the main supplier for any non-conformance to Eskom or statutory OHS requirements, including non-conformances by subcontractors.

Induction

• All employees, contractors and suppliers must undergo the relevant Eskom induction.

Contractor management

• The main contractor must demonstrate to Eskom the process and selection criteria used when appointing contractors and suppliers.
• The main contractor must notify Eskom before appointing any contractor or supplier for commencement of work.
• The main contractor must ensure contractors/suppliers have adequate resources and competencies.
• The main contractor is accountable for ensuring its contractors/suppliers comply with applicable legal and Eskom OHS requirements.
• The main contractor must monitor contractors/suppliers through audits and assessments for OHS compliance.
• The main contractor must define grounds for termination of work by contractors/suppliers.
• All non-conformances by contractors/suppliers (all tiers) are dealt with directly with the main contractor through performance and penalty processes.
• Eskom reserves the right to verify compliance and may request testimonials/references and contact details of previous clients (including Eskom) for similar work.

Acknowledgement form

• The acknowledgement form (Annexure B) must be completed with the company/supplier name and signed by an authorised person (CEO, Director or Managing Director) with two witnesses, at a stated place and date.

Health and safety requirements

Applicable standards and legislation

• Eskom contractor Health and Safety requirements standard 32-136
• Project-specific OHS specification/requirements
• Occupational Health and Safety Act (Act 85 of 1993)
• Compensation for Occupational Diseases and Illnesses Act (Act 130 of 1993)

Post-award obligation

• After contract award, the contractor must fully align its processes to Eskom's OHS requirements (policies, procedures, standards).

Penalties

• Penalties will be enforced on the main supplier for non-conformances to Eskom or statutory OHS requirements, including those by its contractors or suppliers.

Induction

• All employees, contractors and suppliers must undergo the relevant Eskom induction.

Contractual terms – contractor management

• The main contractor must demonstrate to Eskom the process and selection criteria applied when appointing contractors and suppliers.
• The main contractor must notify Eskom prior to the appointment of contractors or suppliers for commencement of work.
• The main contractor must ensure contractors/suppliers have adequate resources and competencies.
• The main contractor is accountable for the management of its contractors/suppliers to ensure compliance with applicable legal and Eskom requirements during contract execution.
• The main contractor must monitor contractors/suppliers through audits and assessments regarding OHS compliance during work execution.
• The main contractor must provide grounds for termination of work done by contractors/suppliers.
• All non-conformances/non-compliance by contractors/suppliers (all tiers) will be dealt with directly with the main contractor in terms of performance and penalty processes.
• Eskom reserves the right to verify compliance and may instruct the contractor to provide copies of testimonials/references and contact details of clients (including Eskom) for whom the company has done previous similar work.

Scope: Ash conveyor WA16 head station repairs for Lethabo Power Station.

Quality requirements aligned to ISO 9001:2015 clauses 6 (Planning), 7 (Support), 8 (Operation).

Documented control of nonconforming outputs and customer complaints per clause 8.7.

Eskom representative: Risk and Assurance (name not provided).

Date issued: 31 July 2025.

No SCM or technical contact names, emails, telephone numbers, submission address or service/delivery address are stated in the provided text.

Returnable documents required:

• Form A: completed and signed.
• Quality management evidence: either valid ISO 9001 certification (Option 1) or documented QMS complying with ISO 9001:2015 (Option 2).
• Documented QMS in operation: organisation chart with responsibility matrix including quality management function; documented control of externally provided processes, products and services (evaluation, selection, monitoring, re-evaluation); records of management review meetings (minutes, attendance registers, presentations).
• Draft Contract Quality Plan specific to the scope of work (ref ISO 10005).
• Draft/example Inspection and Test Plan (ITP) or Quality Control Plan (QCP) for similar/previous work.
• Product/Service Risk Register listing all risks associated with delivering the scope and mitigation actions.
• Verifiable proof of successful execution of similar-sized projects in an industrial environment within the last 2 years, including lessons learnt.
• Verifiable proof of documented customer satisfaction survey records from a similar project (not a template).

Submission method, closing time, number of copies and packaging details are not stated in the provided text.

Quality evaluation scored across five sections (maximum 11 points):

• Section A (QMS): Option 1 — valid ISO 9001 certification from an accredited body with relevant scope, authorised certification authority, recognised international accreditation, valid expiry date = 4 points. Option 2 — documented QMS complying with ISO 9001:2015 clauses 6, 7, 8 and documented control of nonconforming outputs/clause 8.7 = 2 points.
• Section B (QMS in operation): organisation chart with responsibility matrix including quality function = 1 point; documented control of externally provided processes/products/services per clause 8.4 = 1 point; management review meeting records = 1 point. Total = 3 points.
• Section C (Contract Quality Plan): draft Contract/Project Quality Plan specific to scope (ref ISO 10005) = 1 point.
• Section D (Quality Control Plan): draft/example ITP or QCP for similar/previous work = 1 point.
• Section E (Additional): Form A completed and signed = 1 point; verifiable proof of similar industrial project execution within 2 years with lessons learnt = 1 point; Product/Service Risk Register = 1 point; verifiable customer satisfaction survey records = 1 point. Total = 4 points.

No minimum qualifying score, price/preference split, or PPPFA 80/20 or 90/10 details are stated in the provided text.

Scope: Ash conveyor WA16 head station repairs for Lethabo Power Station.

Quality requirements aligned to ISO 9001:2015 clauses 6 (Planning), 7 (Support), 8 (Operation).

Documented control of nonconforming outputs and customer complaints per clause 8.7.

Organisation chart and responsibility matrix must include quality management function/role.

Control of externally provided processes, products and services per clause 8.4 including evaluation, selection, monitoring and re-evaluation criteria.

Management review meeting records required (minutes, attendance registers, presentations).

Draft Contract Quality Plan specific to scope (ref ISO 10005).

Draft/example Inspection and Test Plan (ITP) or Quality Control Plan (QCP) for similar/previous work.

Product/Service Risk Register covering all delivery risks and mitigation actions.

Verifiable proof of similar-sized industrial project execution within the last 2 years with lessons learnt.

Verifiable customer satisfaction survey records from a similar project (actual records, not templates).

Form A must be completed and signed.

Quality management compliance: either valid ISO 9001 certification (Option 1) or documented QMS meeting ISO 9001:2015 requirements (Option 2).

No CSD registration, tax clearance, B-BBEE level, CIDB grading, CIPC registration, professional body registration or local content requirements are stated in the provided text.

Quality evaluation scored across five sections (maximum 11 points):

• Section A (QMS): Option 1 — valid ISO 9001 certification from an accredited body with relevant scope, authorised certification authority, recognised international accreditation, valid expiry date = 4 points. Option 2 — documented QMS complying with ISO 9001:2015 clauses 6, 7, 8 and documented control of nonconforming outputs/clause 8.7 = 2 points.
• Section B (QMS in operation): organisation chart with responsibility matrix including quality function = 1 point; documented control of externally provided processes/products/services per clause 8.4 = 1 point; management review meeting records = 1 point. Total = 3 points.
• Section C (Contract Quality Plan): draft Contract/Project Quality Plan specific to scope (ref ISO 10005) = 1 point.
• Section D (Quality Control Plan): draft/example ITP or QCP for similar/previous work = 1 point.
• Section E (Additional): Form A completed and signed = 1 point; verifiable proof of similar industrial project execution within 2 years with lessons learnt = 1 point; Product/Service Risk Register = 1 point; verifiable customer satisfaction survey records = 1 point. Total = 4 points.

No minimum qualifying score, price/preference split, or PPPFA 80/20 or 90/10 details are stated in the provided text.

Ash conveyor WA16 head station repairs at Lethabo Power Station. Pre-contract award quality assessment Category 2 applies (clause 3.5 of specification 240-105658000). Only one category may be selected; site assessment applicability must be indicated. Main supplier and sub-supplier capability and capacity assessment is not selected.

Returnable documents:

• Form A (Category 2): Tenderer's quality representative must complete, date and sign the form to acknowledge and accept Eskom Supplier Quality Requirements per specification 240-105658000 and ISO 9001 standard. An unsigned or unreturned form does not meet the requirement.
• Only one pre-contract award quality category may be selected; Category 2 applies to this enquiry. Site assessment applicability must be indicated on the form.

Pre-contract award quality assessment: Category 2 of specification 240-105658000 applies. Post-contract award requirements include contract execution, supplier quality performance monitoring, Eskom rights of access and information, preservation, quality audit conditions, management of nonconformities, and special processes (all per clause 3.7 and 3.8 of 240-105658000). ISO 9001 clauses 4–10 and quality management principles 1–7 are applicable and will be assessed.

Scope: Ash conveyor WA16 head station repairs at Lethabo Power Station.

Applicable quality specification: 240-105658000 (authorised January 2022, review January 2027).

Pre-contract award quality category: Category 2 (clause 3.5 of 240-105658000).

Post-contract award requirements: contract execution (clause 3.7), supplier quality performance monitoring (clause 3.7), Eskom rights of access (clause 3.8), Eskom rights to information (clause 3.8), preservation (clause 3.8), quality audit conditions (clause 3.8), management of nonconformities and nonconforming outputs identified by Eskom (clause 3.8), special processes (clause 3.8).

ISO 9001:2015 clauses applicable: 4 (Context), 5 (Leadership), 6 (Planning), 7 (Support), 8 (Operation), 9 (Performance evaluation), 10 (Improvement).

ISO 9001 quality management principles applicable: 1 (Customer focus), 2 (Leadership), 3 (Engagement of people), 4 (Process approach), 5 (Improvement), 6 (Evidence-based decision making), 7 (Relationship management).

The tenderer must demonstrate compliance with ISO 9001:2015 clauses 4–10 and quality management principles 1–7. Execution methodology must address contract execution, supplier quality performance monitoring, Eskom rights of access and information, preservation, quality audit conditions, management of nonconformities and nonconforming outputs, and special processes as defined in clauses 3.7 and 3.8 of specification 240-105658000.

Quality management system requirements per specification 240-105658000 (authorised January 2022, review January 2027) and ISO 9001:2015.

Mandatory clauses: 4 (Context of the organisation), 5 (Leadership), 6 (Planning), 7 (Support), 8 (Operation), 9 (Performance evaluation), 10 (Improvement).

Mandatory principles: 1 (Customer focus), 2 (Leadership), 3 (Engagement of people), 4 (Process approach), 5 (Improvement), 6 (Evidence-based decision making), 7 (Relationship management).

Post-contract award: contract execution, supplier quality performance monitoring, Eskom rights of access, Eskom rights to information, preservation, quality audit conditions, management of nonconformities and nonconforming outputs, special processes (all per clause 3.7 and 3.8 of 240-105658000).

Tenderer's quality representative must complete and sign Form A to acknowledge and accept these requirements.

Quality compliance:

• Tenderer must acknowledge and accept Eskom Supplier Quality Requirements per specification 240-105658000 and ISO 9001 standard by completing and signing Form A.
• Category 2 pre-contract award quality assessment applies.
• All listed post-contract award quality clauses and ISO 9001 clauses/principles are mandatory.

Evaluation includes pre-contract award quality assessment (Category 2) and post-contract award quality requirements: contract execution, supplier quality performance monitoring, Eskom rights of access and information, preservation, quality audit conditions, management of nonconformities, and special processes (clauses 3.7 and 3.8 of 240-105658000). ISO 9001 clauses 4–10 and quality management principles 1–7 are applicable and will be assessed.

Eskom OHS Representative (signs the evaluation form)

Development Team: Diane Maunatlala

Returnable documents (all must be submitted):

• Annexure B: signed acknowledgement of Eskom's OHS legal and other requirements.
• Health and Safety Plan addressing project/scope OHS risks, aligned with the health and safety specification.
• Detailed OHS costing (broken down, not lump sum).
• Baseline OHS Risk Assessment (BRA) with methodology.
• Valid Letter of Good Standing (COIDA or equivalent).
• OHS policy signed by CEO, complying with OHS Act Section 7.
• OHS competency evidence: CVs and qualifications/certificates for required competencies.
• Additional OHS returnables applicable to the scope must be populated and evaluated before contract award.

Additional OHS tender returnables applicable to the scope of work must be populated and evaluated prior to contract award; this section is to be deleted if not applicable.

Mandatory OHS returnables are evaluated for this high-risk tender. Each item is marked Y (Yes), N (No), or N/A (Not applicable). The overall recommendation is 'Recommended' or 'Not Recommended'. Bidders must satisfy all mandatory OHS returnables to be recommended.

Scope of work: Ash conveyor WA16 head station repairs for Lethabo Power Station. The OHS requirements are high-risk and must be addressed in the Health and Safety Plan and Baseline Risk Assessment.

OHS competency must be demonstrated considering the scope of work, risks, OHS plan and applicability. Submit CVs and qualifications/certificates listing the competencies required.

OHS costing must be broken down, not provided as a lump sum, and based on the overall scope of work/service to be performed. The scope of work and risk assessment may serve as a guideline.

OHS costing must be broken down (not a lump sum) and based on the overall scope of work/service to be performed. The scope of work and risk assessment may serve as a guideline.

Mandatory OHS compliance:

• Signed acknowledgement of Eskom's OHS legal and other requirements (Annexure B).
• Health and Safety Plan aligned with the health and safety specification.
• Baseline OHS Risk Assessment (BRA) with methodology.
• Valid Letter of Good Standing (COIDA or equivalent).
• OHS policy signed by CEO, complying with OHS Act Section 7.
• OHS competency evidence (CVs and qualifications/certificates).
• Explanatory notes for OHS requirements are in Annexure A: Supplier Risk Category (document 240-77433139).

The submitted OHS policy must comply with OHS Act Section 7.

Explanatory notes for OHS requirements are referenced in Annexure A: Supplier Risk Category (document 240-77433139).

The OHS Tender Evaluation Template (Annexure C1, High risk) is used to evaluate mandatory OHS returnables. Each item is marked Y/N/N/A and the overall recommendation is 'Recommended' or 'Not Recommended'.

Complete the relevant evaluation pack (Pack A for companies/CCs/trusts, Pack B for individuals). Answer all questions, sign the summary sheet, and sign the applicable affidavits and declarations (Appendices). If you have already signed Appendix 7 on Questions 4 or 5, mark Code 3616 on Appendix 7. If not, sign Appendix 8.

Lethabo Power Station: 3708 MW coal-fired, built 1980, fully operational 1990. Conveyor WA16 head station damaged by fire 17 June 2025. Tender for repairs to old KOCH Head Station with all electrical and control equipment. Scope defined in LET08SOW001. Evaluation strategy defines mandatory and qualitative criteria for technical evaluation.

Closing date: 7 October 2026 at 10:00

No compulsory briefing or site visit dates stated in the document.

Technical evaluation threshold: minimum combined weighted final score of 70% required.

Mandatory technical evaluation criteria (all must be met):

• Proof of ISO 3834 Elementary certificate; if welding is subcontracted, a signed letter of intent from both parties must accompany the certificate. An email indicating application for accreditation is not accepted.
• Proof of ISO 9001 certification.
• Signed letter confirming all supplied equipment is compatible with the existing WA16 conveyor (backstop, coupling, gearbox).

Qualitative technical evaluation criteria (total 100% weighting):

General (25%):

• Organogram with CVs and qualifications for all roles (Project Manager, Mechanical artisan, Electrical artisan, Civil Engineer (Pr Eng/Pr Tech), Site Supervisor, C&I artisan) – 20% sub-weighting. Minimum 5 years' relevant experience per individual.
• Method statement for project execution from site establishment to commissioning – 25% sub-weighting.
• Project schedule (Level 3) with activity breakdown, key dates, critical path – 20% sub-weighting.
• Letter of warranty for major equipment per scope of work – 10% sub-weighting.
• Relevant experience: minimum 5 projects covering full scope (manufacturing/installation of conveyor equipment ≥600T/hr, commissioning) with 3 verified references – 25% sub-weighting.

Mechanical (20%):

• Compliance with mechanical scope, risk assessment of deviations – 50% sub-weighting.
• Data sheets for pulleys, bearings (A Brand only), hydraulic nuts, laser alignment equipment – 50% sub-weighting.

Civil (15%):

• High-level technical proposal covering plant/equipment, tests/repair materials, shot blasting/repainting, risks/deviations, temporary works – 60% sub-weighting.
• Civil resource professionally registered with ECSA as Civil Engineer or Civil Engineering Technologist; valid certificate required. If not directly employed, signed letter of intent or employment contract – 40% sub-weighting.

Control & Instrumentation (20%):

• Proof of conveyor protection system integrator status or subcontractor proof with signed letter of intent – 40% sub-weighting.
• Method statement for repair and integration of refurbished head station protection equipment – 30% sub-weighting.
• Data sheets for junction boxes, radios, trunking & racking – 10% sub-weighting.
• Data sheets for conveyor protection systems (ETR, block chute detector, misalignment/RIP devices, load cell, proximity sensor) – 10% sub-weighting.
• Data sheets for instrument cabling (UV and copper/ethernet) – 10% sub-weighting.

Electrical (20%):

• Completion of Schedule B (Cable Schedule Appendix A&B, Motor Technical Schedule B, New MV Motor Technical Schedule AB) without deviations – 40% sub-weighting.
• Technical methodology and execution plan for electrical installation, commissioning, handover (cabling assessment, motor compliance, earthing/bonding, junction box datasheets) – 60% sub-weighting.

Scoring scale: 5 = fully compliant, 4 = compliant with minor gaps, 2 = partial/acceptable with conditions, 0 = non-compliant/nothing submitted.

Unacceptable technical risks (automatic disqualification): non-compliance to scope, no execution method statement, incorrect assumptions, unacceptable deviations, failure to adhere to Eskom standards, no warranty on major equipment, no civil qualification for civil engineer, key personnel missing required qualifications/experience, no proof of ISO 3834 rev 2.

Acceptable exception: main tenderer may use subcontractor references with signed letter defining relationship.

Unacceptable exceptions: delays >2 weeks beyond committed timeline, constructability issues affecting plant operation, negative reference feedback, work not similar in type/complexity, deviations crucial to execution.

Scope: Repairs to the old KOCH Head Station of conveyor WA16 at Lethabo Power Station, including all electrical and control equipment, following a fire on 17 June 2025.

Lethabo Power Station: coal-fired, 3708 MW capacity, operational since December 1990. Dual-line conveyor system removes ash from power island to ash dump.

Applicable documents: LET08SOW001 (Scope of Work for WA16 Head Station Repair) and 240-48929482 (Tender Technical Evaluation Procedure).

Work covers mechanical, civil, control & instrumentation, and electrical disciplines.

Key equipment: backstop, coupling, gearbox, pulleys, bearings (A Brand only), hydraulic nuts, laser alignment equipment, conveyor protection instrumentation (ETR system, block chute detector, misalignment/RIP devices, load cell, proximity sensor), junction boxes, radios, trunking, racking, instrument cabling (UV and copper/ethernet), MV motors, cable schedules.

Requirements: shot blasting and repainting, conditional visual inspection, temporary works, compliance with Eskom standards.

Method statement required for project execution covering site establishment to commissioning with details of how work will be done. Electrical methodology: narrative and supportive documentation including cabling assessment, motor compliance, earthing/bonding, junction box datasheets. Civil technical proposal: plant/equipment, tests/materials, shot blasting/repainting, risks/deviations, temporary works. C&I method statement for protection equipment integration. Project schedule Level 3 with activity breakdown, key dates, critical path.

Tenderer must demonstrate relevant experience: minimum 5 projects covering full scope (conveyor equipment ≥600T/hr manufacturing/installation and commissioning) with 3 verified references. Organogram with 6 key roles, each with ≥5 years' experience. Civil engineer/technologist must be ECSA registered; if subcontracted, letter of intent required. References must include project name, order number, description, dates, contact details.

ISO 3834 Elementary certificate required; letter of intent from both parties if welding subcontracted. Email application proof insufficient. ISO 9001 certification required. Quality control references: ITP, QCP, QMS, QC, NCR terminology used.

Mandatory certifications and registrations:

• ISO 3834 Elementary certificate (welding quality); if welding subcontracted, signed letter of intent from both parties required.
• ISO 9001 certification (quality management).
• ECSA registration for civil engineer/technologist (Pr Eng or Pr Tech); valid certificate must be submitted. If key resource not directly employed, signed letter of intent or employment contract required.
• Proof of conveyor protection system integrator status (or subcontractor proof with signed letter of intent).
• Equipment compatibility letter confirming all supplied equipment matches existing WA16 conveyor.
• Verifiable reference projects: minimum 5 projects covering manufacturing/installation of conveyor equipment ≥600T/hr and commissioning, with 3 verified references.
• Organogram with qualified personnel: Project Manager, Mechanical artisan, Electrical artisan, Civil Engineer (Pr Eng/Pr Tech), Site Supervisor, C&I artisan – each with ≥5 years' relevant experience.

No B-BBEE, CIDB, CIPC, or local content requirements mentioned in this document.

Unacceptable technical risks: non-compliance to scope, no method statement, incorrect assumptions, unacceptable deviations, failure to adhere to Eskom standards, no warranty on major equipment, no civil qualification, key personnel missing qualifications/experience, no ISO 3834 proof. Acceptable exception: subcontractor references with signed letter. Unacceptable exceptions: delays >2 weeks, constructability issues affecting plant, negative references, dissimilar work, crucial deviations. No acceptable risks listed.

Technical evaluation threshold 70%. Mandatory: ISO 3834 with letter of intent, ISO 9001, equipment compatibility letter. Qualitative weightings: General 25%, Mechanical 20%, Civil 15%, C&I 20%, Electrical 20%. Sub-criteria with weightings and scoring descriptors. Unacceptable risks and exceptions defined.

Returnable document

• Eskom Authorisation Form (240-15811258 Rev 2): the bidder ticks its organisation type — company, close corporation, partnership, joint venture, sole proprietor or trust — completes the matching certificate, and has its authorised representative sign the closing table.
• Certified proof of the authority relied on must be attached: a board resolution for a company, a members' resolution for a close corporation, a power of attorney for a joint venture, or a trustees' resolution for a trust.
• Partnership certificates must be signed by enough partners to commit the partnership; joint venture certificates by every member of the venture.

Authority to bind the bidder

• The signatory named on the bid must be authorised by the bidder's governing body, and a certified copy of that authority must accompany the bid.
• Joint ventures: a certified copy of the joint venture agreement is required, recording joint and several liability of all members, the lead member, and the ratios for dividing work and payment between members.

Ash conveyor WA16 head station repairs at Lethabo Power Station. Baseline risk assessment covering hazard identification and risk analysis for coal dust, noise, manual handling, toxic gases, suspended loads, working at heights, UV radiation, heat, night travel, walking hazards, and driving distractions. Controls specified per hazard.

Scope: Ash conveyor WA16 head station repairs at Lethabo Power Station.

Key activities and associated hazards:

• Coal dust exposure (lung disease): dust suppression systems, dust masks, medical surveillance.
• Noise from grinding/cutting (NIHL): hearing conservation programme, training, hearing protection devices.
• Manual handling and back trauma: buddy system, lifting equipment, training.
• Toxic gas/inhalation from welding, cutting, grinding: ventilation/extraction, permit to work (PTW), respiratory protection.
• Suspended loads/falling objects: guarding, barriers, rails.
• Working at heights: fall protection, approved scaffolding, barriers, rails.
• UV radiation from welding: eye protection, training/awareness.
• Heat exposure from cutting, grinding, welding: safe work procedures, full PPE.
• Night travel risks (fatigue, stray animals, bad roads, speeding, hijacking): driver assessments, vehicle inspections, training, road worthiness checks.
• Walking hazards (uneven/slippery surfaces, open manholes): inspections, training.
• Driving distractions: Bluetooth devices, vehicle cameras, focus protocols.

Risk ratings recorded (e.g., 4 3 II. F, 5 3 II. F). Controls categorised as Engineering, Administrative, PPE.

Occupational Health and Safety compliance per Eskom procedure 32-520.

Mandatory controls include:

• Permit to work (PTW) for high-risk activities (working at heights, hot work, confined spaces, toxic gas exposure).
• Task risk assessments before work commencement.
• Medical surveillance for noise, dust, and toxic gas exposure.
• Hearing conservation programme for noise-exposed personnel.
• Competent persons for splicing, cutting, rigging, and lifting operations.
• Full PPE required for all identified hazards (respiratory, hearing, eye, hand, fall protection).
• Vehicle roadworthiness and driver fitness for night travel.
• Training and awareness for all identified hazards.

Occupational Health and Safety Baseline Risk Assessment for Lethabo Power Station conveyor WA16 head station repairs per procedure 32-520.

Hazards and controls:

• Coal dust exposure (lung disease): Engineering - dust suppression; Administrative - task risk assessments, medical surveillance; PPE - dust masks.
• Noise from grinding/cutting (NIHL): Engineering - ventilation/extraction; Administrative - zoned noise areas, training/awareness, hearing conservation, medical surveillance; PPE - hearing protection devices.
• Manual handling/back trauma: Engineering - lifting equipment; Administrative - buddy system, training, person job specifications; PPE - gloves.
• Toxic gas/inhalation from welding, cutting, grinding: Engineering - ventilation/extraction; Administrative - PTW, local safe work procedures, training/awareness, medical surveillance, task risk assessment; PPE - full PPE (respiratory protection).
• Suspended loads/falling objects: Engineering - guarding/barriers/rails; Administrative - load inspection, person job specifications, training, task risk assessment; PPE - full PPE.
• Uneven floor surfaces (tripping/falling): Engineering - lifting equipment where possible; Administrative - toolbox talk, reporting unsafe conditions; PPE - full PPE.
• Sharp tools (splicing/cutting belts): Administrative - safe work methods, risk assessment, competent persons, care when using tools, PTW; PPE - full PPE.
• Working at heights: Engineering - guarding/barriers/rails, approved scaffolding; Administrative - training/awareness, medical surveillance, task risk assessment; PPE - fall protection.
• UV radiation from welding (arc eyes): Administrative - training/awareness; PPE - eye protection.
• Heat from cutting, grinding, welding (body burns): Administrative - PTW, local safe work procedures, task risk assessment; PPE - full PPE.
• Night travel (fatigue, stray animals, bad roads, speeding, hijacking): Engineering - vehicle lights, road worthiness; Administrative - rest period compliance, driver assessments, driver not to drive when exhausted, transport service provider, road training, vehicle inspection, driver permit, travelling risk assessment, training.
• Walking hazards (uneven/slippery surfaces, open manholes): Administrative - training, inspections.
• Driving distractions: Engineering - Bluetooth devices, vehicle cameras; Administrative - training/awareness, task risk assessment, driver focus protocols.

Risk ratings provided (e.g., 4 3 II. F, 5 3 II. F). Controls categorised as Engineering, Administrative, PPE.

Mandatory returnable: E-Tenderers E-Tendering Training Acknowledgement Form (Template ID: 240-9722574 Rev 1).

• Must be fully completed and submitted to Eskom within the prescribed period.
• Failure to submit renders the tenderer non-responsive and disqualified from the procurement process.
• The form acknowledges that the tenderer has undergone self-training via the e-Tendering Noddy Guide, video, or clarification meeting and confirms ability to operate the E-Tendering Solution.

Scope

• Repair of the WA16 head station on the ash conveyor system at Lethabo Power Station.
• Purpose: appoint a contractor to perform the required services.
• Applicability: Lethabo Power Station only.

Development team

• Pieter Holtzhausen — Senior Technologist, Outside Plant Engineering
• Louis Nel — C&I Engineering
• Ntebaleng Maidi — Electrical Engineering

Authorisation

• Johan Brink — Manager, Outside Plant Engineering
• Thuli Njapha — Engineering Manager, Lethabo Power Station

Tender-phase deliverables

• Project name, client name and telephone contact details.
• Outline and description of the proposed approach, with diagrams, charts or an organogram.
• Governance documents referenced in the scope of work.
• High-level Method Statement demonstrating compliance with the full scope.
• Constructability Analysis Report based on the Method Statement.
• Level 3 schedule for the design scope, showing all activities and major milestones.
• Detailed Method Statement including the constructability analysis.
• Risk assessments.
• Project-specific safety file.
• Project Quality Control Plan.
• Inspection and Test Plans (ITPs) showing all intervention points.
• Quality Control Plans (QCPs).
• Organogram of key project staff, with CVs for the Construction Manager and artisans.
• Detailed CVs of all key staff proposed for the project.
• Condition assessment report from a detailed visual inspection of the head station.

Post-award deliverables

• Construction programme.
• Updated project-specific safety file.
• Temporary works designs signed by a professionally registered Structural Engineer or Technician.
• Updated detailed risk assessments.
• Monthly QA returnable.
• Laser alignment report for motor-to-gearbox alignment, radial and axial within 0.05 mm.

Scope

• Repair the fire-damaged old KOCH head station of ash conveyor WA16 at Lethabo Power Station, including all electrical and control equipment.
• Restore the head station to its original design capacity and functionality.
• The contractor is responsible for final commissioning; Lethabo performs the final installation at the desired position.
• Location: latitude 26°42'59.22"S, longitude 27°58'51.14"E.

Structural steel (old KOCH structure)

• Shot blast and re-paint the structure to standard 240-75655504.
• Replace all deck plates, all idler frames with idlers, and all handrails.
• Shot blast the sled and carry out thickness tests; replace the sled if required.
• Manufacture the missing portion of the take-up trolley.
• Replace all bolts and nuts on the structure.
• Supply a new tension cable and manufacture a new sheave arrangement for the tension system.
• Supply backstop FALK 1115 NRT.

Drive train

• Manufacture 2 drive bases complete with guards.
• Supply 2 fluid drive couplings with MSZ flanges (Voith 562TVVS).
• Supply 2 gearboxes (Hansen RLH 33, ratio 23.170:1).
• Supply 2 gearbox hubs, 2 motor hubs and 2 shrink disks for hollow shaft gearboxes.

Pulleys

• Replace all pulleys to drawing 0.63/26699.00.
• Drive pulley: ceramic lagging. Remaining pulleys: 10 mm plain rubber lagging.
• Supply pulleys with 'A-Brand' bearings; install all bearings with hydraulic nuts.

Discharge chute

• Shot blast and re-paint the chute.
• Manufacture a new bonnet/deflector plate with ceramic tiling.
• Remove all ceramic tiles, repair windows where required, and re-tile the complete chute.

Electrical

• Install new cable racks on the new moving head and secure all cables with steel ties.
• MV cables: replace or re-route cables for extendable conveyor drive motor 1 (00WA16D001), shiftable conveyor drive motor 1 (00WC28D001), shiftable conveyor drive motor 2 (00WC28D001), and from switchgear to the conveyor structure for 380 V ash stacker board 2 (61GC001); provide junction boxes and connect flexible cable to each motor.
• MV cable specification: 3.3 kV XLPE, single steel wire armouring, 3 core 70 mm² stranded copper, general PVC sheathed; length determined by the contractor.
• LV cables: replace cables supplying lights and fittings; replace or re-route cables for wrench (00A16D005), wrench (00A28D005) and brake (00WC28D003/4); supply and install new lights with supports to the original design.
• LV cable specification: 600/1000 V, general PVC sheathed and covered, single wire armoured, 3-core (4-core for lights), stranded copper, 16 mm²; length determined by the contractor.
• WA16 primary motor: 3.3 kV, 265 kW, 1 485 rpm, frame D355L, mounting B3, insulation class F, temperature rise B, IP66, service factor S1.
• Winch motor: 380 V, 12 kW, 2 900 rpm, type 2A6/100, flange mounting, insulation class F, temperature rise B, IP55, hoist motor AS7.

C&I equipment

• Stacker Proxim Tsunami Quickbridge 1000/1000L data radio: 2.
• Head end control unit MK8/2 (voltage to be confirmed): 1 (WC28) and 1 (WA16).
• CTS intelligent end unit: 1 (WC28) and 1 (WA16).
• CTS 1000 AVA (voltage to be confirmed): 1 (WC28) and 1 (WA16).
• CTS TK termination kits (set of two): 2 (WC28) and 2 (WA16).
• CTS PCC pull cable carriers: 150 (WC28) and 150 (WA16).
• CTS PC pull cable: 1 000.
• CTS SRBL striking roller misalignment left and right (set of 2), head and tail (set of 2): 1.
• CTS MRD mechanical rip detector head and tail: 1.
• CTS 348 PSW/DC intelligent conveyor trip switch: 4.
• Blocked chute detector, Hawk type Gladiator G3 microwave switch: 1.
• Tension unit load cell: 1.
• Tension unit position laser (0.2 to 10 m), IFM-01D100: 1.
• Speed sensor proximity, Perperl Fuchs: 1.
• Marshalling junction box, stainless: 1.
• Trunk cable UVG 16 ACV: 50.

Drawings issued by Eskom

• 0.63/20127, 0.63/20128 and 0.63/20129 (tension car, chassis and disposition), 0.63/20130 (ash handling plant tension car parts details), 0.63/20133 (conveyor 00-WC-17 head chute), 0.63/20134 (conveyor 00-WC-17 sheave arrangement), 0.63/20229 (disposition drive unit 00-WC-27), 0.63/26699 (conveyor equipment and pulley schedule), 0.63/55551_1 (in-pit ash dump stacking), 0.63/55551_2 (system pulleys shaft details).

Employer's drawings

• 0.63/55551_2 — system pulleys shaft details.
• 0.63/20130 — ash handling plant tension car parts details.

Key personnel

• An organogram showing project staff and lines of authority must be submitted within one month of contract date.
• Detailed CVs of all key staff assigned to the project must be supplied.
• Minimum personnel required: dedicated Project Manager; Contracts Manager (NEC); dedicated Health and Safety Manager; dedicated Health and Safety Officers; dedicated Quality Manager; dedicated Project Planner.

Quality assurance

• The contractor and all subcontractors must comply with Eskom's quality requirements, including Supplier Quality Management 240-105658000 (QM58).
• The contractor must use a Quality Management System across all project phases and provide evidence of a fully implemented QMS; Eskom may audit the contractor or subcontractor QMS.
• Certification to ISO 9001:2015 and ISO 10005:2018 is required, with documentation submitted at tender stage, within 30 days of contract date, during execution and on completion.
• A Contract Quality Plan must be submitted to the Project Manager within 30 days of contract date and before works start, aligned to ISO 10005:2018, QM58 and template 240-109253698.
• An Inspection and Test Plan or Quality Control Plan must be submitted 20 days before any works start, per template 240-109253302, showing each activity.
• The Project Manager sets intervention points (witness, hold, verification, surveillance, review) based on equipment risk; failure to allow an intervention point is a non-conformance.
• Bypassed intervention points without written waiver require the activity to be repeated at the contractor's cost and a non-conformance is issued.
• Operational documents to be submitted include the updated QCP register, inspection notifications and reports, non-conformance and defect registers, inspection schedules, FAT/SAT dates, inspection and test reports, weekly and monthly quality progress reports, and data books.
• All plant and materials must be tested against the agreed ITP/QCP before delivery.
• The contractor must give 5 working days' notice for local off-site inspections, 48 hours for local on-site inspections and 21 working days for foreign inspections, with copies of inspection reports.
• Non-conformances must be acknowledged within the reply period, with corrective and preventive actions and dates proposed; progress is reported weekly.
• Non-conformances not closed within 14 working days of issue attract a penalty of R20 000 per event; if still open after 14 days, an additional 5% is added to the compounded penalty for each day until the response is accepted.
• A monthly quality management report is due on the last working day of each month, covering NCRs, concessions, defects, the QCP/ITP register, the risk register, QA summary, inspection dates, audit findings and preservation.

Interface and programme risk

• The contractor must show how it manages interfaces with other contractors, site and time constraints.
• The plan must demonstrate how construction will be completed within the allowable timeframes and identify the risks to meeting them.
• Interface risks to be addressed include working near others, access to site and material storage.

Certifications and standards

• ISO 9001:2015 quality management certification required; ISO 10005:2018 for quality plans.
• ISO 3834 certificate (elementary minimum) required for welding on Eskom structures.
• Welding procedure specifications to BS 15614 and welder qualifications to BS.
• Compliance with Eskom Supplier Quality Management standard 240-105658000 (QM58).
• Corrosion protection to standard 240-75655504 for steel structures.
• Compliance with Eskom's Life Saving Rules and Lethabo Power Station site rules.
• Temporary works designs must be signed by a professionally registered Structural Engineer or Technician.
• B-BBEE minimum level 3.

Quality system

• The contractor must provide evidence of a fully implemented QMS; Eskom may audit the contractor's or subcontractor's QMS.
• A Contract Quality Plan is due within 30 days of contract date and before works start.
• An ITP or QCP is due 20 days before any works start.

Site safety rules

• The contractor must comply with Eskom's Life Saving Rules and Lethabo Power Station's site rules.
• Safe work procedures must be submitted to Eskom Engineering for review and acceptance.
• A project-specific safety file must be submitted and kept updated.
• SHE documentation is reviewed and accepted by the Employer as a programme activity.
• Plant safety clearances are issued by the Employer.

Personnel and risk

• A dedicated Health and Safety Manager and dedicated Health and Safety Officers must be appointed for the works.
• Detailed risk assessments listing project-specific risks and mitigations must be submitted and updated.
• Health, safety and quality control must be addressed for each activity in the method statement.

Contractor accountability

• The contractor carries full professional accountability and liability for the works.
• All design requirements, codes and regulations in the specification must be met.
• Any discrepancy or ambiguity in Eskom's requirements must be raised with the Project Manager immediately.
• Where extra information is needed to install components, the contractor must notify the Project Manager at least one week before continuing.
• Drawings and documentation supplied to Eskom become Eskom's property on completion, and Eskom may issue them to other contractors.

Condition assessment

• The contractor must visually inspect the whole area to establish the full extent of damage, including member connections (endplates, bolts, welds) and structural steel.
• Inspections follow Eskom standard 240-99527377 (Inspection Manual for Civil Works at Eskom's Power Stations).
• A detailed condition assessment report must be submitted to the Project Manager for review and acceptance.
• Material datasheets and documents must be accepted by the Project Manager before materials are used.

Temporary works

• The contractor designs, procures, manufactures, constructs and later dismantles all temporary works.
• Temporary works designs affecting existing infrastructure must be submitted for acceptance, with a design report containing calculations, inspection reports, survey data, design models, assumptions and drawings.
• Acceptance of designs does not transfer liability away from the contractor.

Plant, material and storage

• The contractor supplies all tools and equipment, and supplies, delivers, offloads and temporarily stores all materials.
• Damage caused to existing infrastructure is repaired at the contractor's cost.
• The contractor arranges its own storage and laydown areas, agreed with the Project Manager, within the site boundary.