Design, procure, supply and install effluent neutralisation sump temporary bypass at lethabo power station (18-Month contract)

The project involves the design, procurement, supply and installation of an effluent neutralisation sump temporary bypass at Lethabo Power Station, for a period of 18 months. The contractor will be the main contractor and is responsible for all OHS compliance for itself and any appointed subcontractors.

Closing date: 30 November 2026 at 08:00.

No briefing session or site visit dates are stated in the provided document.

No contact details are stated in the provided document.

Project address: Lethabo Power Station, Deneysville / Viljoensdrift Road, Private Bag X415, Vereeniging, 1930 SA.

Returnable documents:

• Completed and signed SBD forms as listed in the tender pack (SBD 1, SBD 4, SBD 6.1, SBD 8, SBD 9, etc.).
• Signed Section 37(2) agreement (OHS Act) with Eskom.
• Valid Letter of Good Standing (COID).
• OHS file and OHS plan.
• Method statements and risk assessments.
• SHEQ policy signed by CEO or Section 16(2) appointee.
• Proof of statutory appointments.
• B-BBEE certificate or affidavit (minimum level 2).
• CSD registration and tax compliance status.

Submission method: Not stated in the provided document.

Closing time: 08:00 (from tender record).

Evaluation stages and scoring split are not stated in the provided document.

Mandatory compliance requirements:

• Registration with the Compensation Commissioner and a valid Letter of Good Standing.
• Signed Section 37(2) agreement.
• Compliance with Eskom's OHS specification and all applicable legislation.
• Statutory appointments under the OHS Act.
• SHEQ policy signed by CEO or Section 16(2) appointee.
• B-BBEE minimum level 2 (per currentAnalysis).

Scope: Design, procure, supply and installation of an effluent neutralisation sump temporary bypass at Lethabo Power Station.

Contract period: 18 months.

Key OHS requirements:

• Contractor must develop an OHS plan meeting Eskom's minimum requirements and all applicable legislation.
• Contractor remains accountable for health and safety of its employees and appointed contractors.
• Must comply with Eskom Life-Saving Rules (open, isolate, test, earth, bond, and/or insulate before touching plant above 1000 V; hook up at heights).
• Must conduct baseline risk assessments and task risk assessments.
• Must provide method statements and safe work procedures.
• Must have a full-time safety officer with a National Diploma in Safety Management and 3 years' related experience.
• Must appoint competent persons for statutory roles (e.g., risk assessor, incident investigator, first aiders, fall protection plan preparer).
• Must ensure all employees are trained and familiar with relevant Eskom OHS documentation.
• Must comply with substance abuse procedure and Eskom's Covid-19 policy.
• Must have emergency response plans and equipment.
• Must conduct toolbox talks, pre-job meetings, and daily team talks.
• Must maintain an OHS file with all required documentation.
• Must comply with all relevant legislation including OHS Act, NEMA, National Water Act, COID Act, and SANS standards.
• Must have a valid Letter of Good Standing from the Compensation Commissioner.
• Must sign a Section 37(2) agreement with Eskom and with appointed contractors.
• Must have a SHEQ policy signed by CEO or Section 16(2) appointee.
• Must provide PPE and ensure proper use.
• Must manage site establishment, housekeeping, stacking, storage, signage, tools, ladders, scaffolding, and vehicle management per Eskom requirements.
• Must report and investigate incidents as per Eskom procedures.
• Must allow Eskom to audit compliance and stop work if non-conformance is found.
• Must itemise OHS costs (training, PPE, safety equipment) in the pricing.
• Must comply with working at heights procedures and have a fall protection plan.
• Must have a fire equipment maintenance programme and hot work permits for boiler making activities.
• Must have first aid equipment and trained first aiders.
• Must manage hazardous chemical substances and flammable liquids safely.
• Must control smoking and cell phone use on site.
• Must ensure occupational health, hygiene, and rehabilitation programmes are in place.
• Must have a medical surveillance programme for employees exposed to hazards.
• Must have a valid medical certificate of fitness for employees where required.
• Must comply with hours of work as per BCEA.
• Must have a contractor performance monitoring system.
• Eskom has the right to terminate the contract for non-compliance.

No specific financial requirements (bid security, bonds, guarantees, retention, payment terms, turnover) are stated in the provided document.

OHS costs must be itemised in the pricing.

B-BBEE: Minimum level 2 (per currentAnalysis).

• Valid B-BBEE certificate or affidavit required.

COID: Registration with Compensation Commissioner and valid Letter of Good Standing.

OHS Act: Compliance with all applicable sections and regulations.

• Section 37(2) agreement signed with Eskom.
• Statutory appointments made (Section 16.2, GAR 9(2), Section 19(3), Section 17, GMR 2(1), PER 11 & 12, GSR 3(4), Section 8, Section 9(1), CR 8(5), CR 10(1)(a), CR 23(1)(d)(i)-(ii)).

SHEQ: Policy signed by CEO or Section 16(2) appointee.

CSD: Registration required (implied by standard Eskom practice, but not explicitly stated in the provided document).

Tax: Valid tax compliance status required (implied, not explicitly stated).

No CIDB grading or turnover threshold stated.

The provided document does not specify the evaluation scoring split or minimum qualifying scores. Mandatory compliance requirements include COID registration, Section 37(2) agreement, OHS compliance, and B-BBEE level 2.

The works comprise the design, procurement, supply and installation of a temporary bypass system for the Effluent Neutralisation Sump (ENS) at Lethabo Power Station. The ENS is part of the Water Treatment Plant and collects dirty regen effluents from demineralised and condensate polishing regeneration plants for neutralisation. The sump has deteriorated and requires repairs, but cannot be taken out of service for an extended period. The temporary bypass will allow the ENS to be taken offline for assessment and repair while maintaining plant operations. The contract is an NEC3 Engineering and Construction Contract (Option A – priced contract with activity schedule) between Eskom Holdings SOC Ltd and the Contractor.

Completion date for the whole of the works: 30 December 2027.

Key dates (conditions to be met):

• Submission of Design: to be agreed upon.
• FAT (Factory Acceptance Test): to be agreed upon.
• Delivery: to be agreed upon.
• Installation: per outage schedule.

Starting date: to be confirmed.

Access dates: to be confirmed.

Defects date: 52 weeks after completion of each section of the works.

Defect correction period: 2 weeks.

No closing date, briefing, or site visit dates are stated in the extracted document.

Project Manager:

• Address: Lethabo Power Station, Deneysville Rd, Viljoensdrift
• Telephone: not stated
• Email: not stated

Supervisor:

• Address: Lethabo Power Station, Deneysville Rd, Viljoensdrift
• Telephone: not stated
• Email: not stated

Employer: Eskom Holdings SOC Ltd, registered office at Megawatt Park, Maxwell Drive, Sandton, Johannesburg.

No other contacts are stated in the extracted document.

Submission method: not stated in the extracted document.

Returnable documents (from the tender pack):

• Form of Offer and Acceptance (Part C1.1): the signed offer, including the Schedule of Deviations if any.
• Pricing Data (Part C2): completed activity schedule and pricing assumptions.
• Contract Data Part 2 (C1.2b): contractor's details, key persons, fee percentages, programme, and other data.
• CIDB registration number (if applicable) must be provided.
• The offer must remain valid for the period stated in the Tender Data.
• Any deviations from the tender documents must be listed in the Schedule of Deviations; otherwise they are not valid.

Evaluation is in two stages: technical (functionality) then price.

Technical evaluation criteria (from the evaluation strategy):

• CVs must show a minimum of 4 years of relevant working experience for key personnel.
• Qualitative criteria are assessed on the bidder's understanding of the scope, tailored approach, and compliance with standards.

Unacceptable technical risks that may disqualify:

• Non-compliance or deviation from the scope of work or standards without adequate explanation or alternatives.
• Exclusions of scope specified in the Works.
• Generic approach not tailored to the project's specific objectives and constraints.
• Lack of full understanding of the scope of work.
• Insufficient experience of the contractor for such works.
• Changing subcontractors after award without written consent.
• Submitting operating manuals instead of specification documents.
• Deviations to any part of the technical specifications without providing alternate solutions.

Preference points system: not stated in the extracted document.

Scope of works (design, procure, supply and install):

• Design and construct a temporary effluent neutralisation sump (ENS) bypass system at Lethabo Power Station.
• The ENS is a reinforced concrete underground sump, approximately 21,500 mm (length) x 16,700 mm (width) x 7,400 mm (height), with a 600 mm thick floor slab, 450 mm thick sidewalls, and a 200 mm thick roof slab.
• The bypass must allow for detailed condition assessments and repairs of the ENS without taking the sumps out of service for an extended period.

Specific works include:

• Design and construction of the temporary sump, including emergency overflow to the medium conductivity sump.
• Design, construction and testing of a temporary pumping system from the temporary sump to the effluent brine tank.
• Re-design, modification, construction and testing of the inlet pipe to the temporary sump.
• Blanking off and redirecting other normal inflows (CIP reject and chemical drain) to the temporary sump.
• Blanking off all overflows to the ENS (to be re-instated when needed).
• Design, manufacture and installation of an impulse line for the pH analyser on the level probe outlet flange/pipe.
• Re-instate the overflow pipeline from the brine effluent tank to the ash conditioning sump (ACS).
• Perform a HAZOP study in line with client requirements.
• Procure and supply all materials, tools, equipment and resources required.

Key design and construction requirements:

• Civil and structural: detailed design by a registered ECSA civil/structural engineer; 35MPa concrete in walls; smooth formwork; reinforcing steel; dowel bars; galvanised steel grating covers; waterproofing; screed to falls; epoxy coating; as-built drawings.
• Mechanical: detailed design by a registered ECSA mechanical engineer; inlet piping modification; 30 kW 316 stainless steel VFD submersible pump (160 m³/hr @ 6.6 m static head); HDPE discharge piping to brine tank (150NB); HDPE overflow piping to medium conductivity sump (250NB); valves (discharge, NRV, inlet butterfly, outlet isolation/selection); redirecting CIP and chemical drain HDPE pipework; 10NB 316 stainless steel impulse line for pH analyser; 250NB HDPE overflow; blank flange; testing and commissioning; as-built drawings.
• Electrical: decommissioning of existing effluent handling system; new temporary sump electrical requirements; VFD point of connection and location; LV cabling and cable racking; low voltage switchgear; motors; VFDs; earthing and lightning protection; control and instrumentation interface.
• C&I: VFD, low voltage control valves with actuators and splitter boxes, cabling, junction boxes, racking/trunking, field enclosures, pH analyser, Foxboro DCS interfaces.
• Contractor is the design authority and must ensure designs comply with Eskom standards and SANS standards.
• Contractor must submit a first programme within 2 weeks of the Contract Date; revised programmes at intervals no longer than 1 week.
• Training and technology transfer required.
• Plant and material supply as per the scope.

Pricing format: NEC3 Option A – Priced contract with activity schedule (lump sum per activity).

• The activity schedule is a pricing document only; no adjustment to lump sum prices if quantities differ, except through compensation events.
• Price adjustment for inflation (Option X1) applies, escalated at each payment certificate as a line item.
• Price adjustment factor proportions: 10% electrical transport engineering, 50% building & construction material purchases (whole industry), 25% mechanical engineering, remainder non-adjustable.
• Base date for indices: to be confirmed (month prior to issuing enquiry).

Payment terms:

• Assessment interval: first after design acceptance, second after receiving equipment, third after approval of SHE file and site establishment, final after installation and commissioning.
• Payment period: one calendar month.
• Interest rate: publicly quoted prime rate of Standard Bank of South Africa (for Rand amounts) or LIBOR (for other currencies).

Retention (Option X16):

• Retention free amount: R0.00.
• Retention percentage: 5% of every payment.

Delay damages (Option X7):

• 1% of the task order value of the delay per week, up to a maximum of 15%.

Limitation of liability (Option X18):

• Contractor's liability for indirect or consequential loss: R0.00.
• Contractor's total liability limited to the total of the Prices (excluding additional excluded matters).
• End of liability date: 7 years after defects date for latent defects, or prescription date for other matters.

Insurance:

• Employer provides insurance per "Format A" (for contract value ≤ R350M inclusive of VAT).
• Contractor must provide additional insurances as stated in the Insurance Table.
• Minimum limit of indemnity for death/bodily injury to employees: as prescribed by COIDA, plus common law liability with a limit of not less than R500,000.
• Contractor's liability for employer's insurance deductible limited to relevant deductibles.

Tax invoice:

• Contractor must provide a tax invoice within one week of receiving a payment certificate.
• Include Eskom's VAT number 4740101508 on each invoice.
• Late tax invoice extends payment period accordingly.

No bid security, bond, or guarantee amounts are stated in the extracted document.

B-bbee:

• Contractor must notify the Employer within 7 days of any change in B-BBEE status.
• Updated verification certificate and supporting documentation must be submitted within 30 days of notification.
• If B-BBEE status decreases, the Employer may re-negotiate or terminate the contract.
• Failure to notify may constitute a reason for termination.

Health, safety and environment:

• Contractor must comply with the Construction Regulations 2014 (under the OHS Act) and all applicable health, safety and environmental laws.
• The Employer may appoint the Contractor as Principal Contractor.
• The total of the Prices must include sufficient amount for proper compliance with health and safety requirements.
• A safety file is required (listed in the activity schedule).

Ethics:

• Any corrupt or illegal practice is grounds for termination.

Confidentiality:

• Contractor must not disclose contract information without consent; images of the works require prior written consent.

Joint ventures:

• If a joint venture, all parties are jointly and severally liable; key person with authority to bind must be notified within 2 weeks of Contract Date; composition cannot be altered without consent.

Cession and assignment:

• Contractor cannot cede, delegate or assign rights/obligations without written consent.

CIDB: registration number required if applicable; no minimum grade stated.

CSD, tax clearance, CIPC: not stated in the extracted document.