Dynamic calibration of so2 and nox analysers at ESKOM gourikwa air quality monitoring station, mossel bay

SAWS manages the Eskom Gourikwa air quality monitoring station on behalf of Eskom Holdings SOC. The station is located in Mossel Bay, Western Cape. The service involves dynamic on-site calibration of two analysers (SO2 and NOx) using a SANAS-accredited laboratory. The requirement arises from the need to meet SANAS Standard TR-07-03, requiring annual calibration.

Closing date and time: 02 November 2026 at 11:00

Briefing session: None (not applicable)

Enquiries:

Department: SCM Acquisition Department

Email: [email protected]

Submission:

Email: [email protected]

Organisation: South African Weather Service

Address: Private Bag X097, Pretoria, 0001

Submission channel: email only.

Submission email: [email protected]

Closing time: 02 November 2026 at 11:00

Bids must arrive before the closing date and time; late bids are not considered.

Bids must be submitted on the official forms provided, not re-typed.

Bidders should initial all pages of their bid.

The successful bidder will be required to sign the written contract form (SBD 7).

Returnable documents:

• Annexure A (Invitation to Bid): supplier details, B-BBEE status, foreign supplier questionnaire if applicable.
• Annexure C / SBD 4 (Bidder's Disclosure): declares any relationship with state employees; false disclosure disqualifies.
• Annexure F / SBD 6.1 (Preference Points Claim): claim B-BBEE points; must be signed if points are claimed.
• Annexure G / SBD 3.3 (Pricing Schedule): completed pricing schedule.
• Annexure I (POPIA Supplier Notice and Consent): consent to process personal information.

Disqualification risks:

• Incomplete or unsigned standard bidding documents.
• Pricing not in South African rand or not inclusive of VAT.
• Failure to provide proof of CSD registration.
• Tax affairs not in order with SARS.
• Any proven corrupt or fraudulent act in competing for the contract.

Evaluation is in four phases:

Phase 1 – SCM compliance: completeness and correctness of documentation.

Phase 2 – Mandatory requirements: SANAS accreditation (accreditation certificate required).

Phase 3 – Functional evaluation: Experience of bidder – up to 100 points based on number of reference projects provided (0 = none, 40 = one reference, 60 = two, 80 = three, 100 = four or more). References must be for calibrations performed after 2018 and must include client name, contact person, telephone number, and year of service; missing details score zero. SAWS may contact references to verify quality.

Minimum qualifying score in functional evaluation: 70%.

Phase 4 – Price and specific goals: 80/20 preference point system (price 80 points, specific goals 20 points). Award to the bidder scoring the highest total points.

Bidders must score at least 70% in functional evaluation to proceed to price and specific goals.

Scope: Dynamic multi-point calibration of two air quality monitoring analysers at the Eskom Gourikwa Air Quality Monitoring Station.

Instruments:

• Sulphur Dioxide (SO2) analyser – 1 unit
• Nitric Oxide (NOx) analyser – 1 unit

Location:

Garden Route District Municipality

Corner Marlin and Samson Street

Extension 23

Mossel Bay, South Africa

Method: Gas phase titration (GPT) method must be used for NOx analyser calibration.

Certification: A calibration certificate must be provided for each instrument calibrated.

Standard: Calibration must be done annually as required by SANAS Standard TR-07-03.

The bidder will schedule and conduct on-site calibrations of all listed instruments.

Bidders must provide contact details of clients for whom they have performed calibration of air quality monitoring instruments.

References must be for calibrations performed after 2018.

Contact details must include: client name, contact person, telephone number, year of service. Incomplete details result in zero score for the criterion.

SAWS may contact references to verify quality.

Calibration services must comply with SANAS Standard TR-07-03 for monitoring of ambient air pollutants.

A calibration certificate must be provided for each instrument calibrated.

The bidder's operational premises must be approved and have relevant accreditation; a due diligence site visit will be carried out before award.

Pricing schedule form: SBD 3.3 (Annexure G).

Prices must be inclusive of VAT.

A ceiling price must be indicated, based on total estimated time for completion of all phases and all expenses.

Break down the ceiling price into cost components.

Indicate period required for commencement after acceptance of bid.

Rates quoted must be firm for the full period; if not, state basis for adjustment (e.g. CPI).

Pricing format: SBD 3.3 Pricing Schedule for Services.

Prices must be in South African rand and inclusive of VAT.

Bidders must indicate a ceiling price based on the total estimated time for completion of all phases, including all expenses, inclusive of VAT.

Bidders must break down the cost components of the ceiling price.

Indicate period required for commencement after acceptance of bid.

Rates quoted must be firm for the full period of the project; if not, provide basis for adjustments (e.g. CPI).

Payment terms: payments settled within 30 days from receipt of invoice.

SAWS may request the latest audited financial statements before award to ascertain financial stability.

CSD registration: Mandatory. Bidders must be registered on the Central Supplier Database and provide their CSD number.

Tax compliance: SARS tax matters must be in order. Provide a TCS PIN or a printed TCS certificate; alternatively a CSD number if no TCS PIN. For JV/consortium/subcontractors, each party must submit a separate TCS PIN/certificate.

B-BBEE: A valid B-BBEE certificate or sworn affidavit (for EMEs and QSEs) must be submitted to claim preference points. Points awarded per B-BBEE level: Level 1 = 20, Level 2 = 18, Level 3 = 14, Level 4 = 12, Level 5 = 8, Level 6 = 6, Level 7 = 4, Level 8 = 2, Non-compliant = 0.

SANAS accreditation: Mandatory. The bidder must be a SANAS-accredited calibration laboratory for gas metrology and on-site calibration of point gas analysers; accreditation certificate must be submitted.

Foreign suppliers: Must complete the questionnaire on Annexure A; if recommended for award, SAWS will forward details to SARS.

State employees: Bids from persons in the service of the state, or companies/directors who are state employees, will not be considered.

Subcontracting: Proof of subcontracting arrangement must be submitted if applicable.

Joint ventures/consortiums: A signed teaming agreement must be submitted.

The contract will be subject to the General Conditions of Contract (GCC) and any Special Conditions of Contract.

The successful bidder must sign a written contract (SBD 7) and conclude a Service Level Agreement (SLA) with SAWS to measure and monitor service performance.

Bidders must indemnify SAWS against third-party claims of infringement of patent, trademark, or industrial design rights.

Non-performance or failure to meet SLA obligations may be assessed; the SLA is an integral part of the supply agreement.

Evaluation is in four phases: SCM compliance, mandatory requirements, functional evaluation, and price and specific goals.

Functional evaluation: Experience of bidder – 100 points maximum; scoring: 0 = no references, 40 = 1 reference, 60 = 2 references, 80 = 3 references, 100 = 4 or more references.

References must be for calibrations performed after 2018; incomplete contact details score zero.

Minimum functional score: 70% to proceed.

Phase 4 uses the 80/20 preference point system with price 80 points and specific goals (B-BBEE) 20 points.