Nitrogen purging services at petrosa gtl refinery, mossel bay (enquiry aht0000026954)

Nitrogen purging services for PetroSA GTL refinery, Mossel Bay, for unit 51 LPG HP Tank Farm. Two phases: Phase 1 purging 2 x 211 m³ bullets, Phase 2 purging 2 x 2205 m³ spheres. Purpose is to remove oxygen to below PetroSA's required level to provide an inert atmosphere. Supplier to provide all supervision, labour, equipment, and nitrogen. Estimated durations: Phase 1 - 4 days, Phase 2 - 6 days. Nitrogen requirements: Phase 1 - 12 tons, Phase 2 - 126 tons.

Closing date: 4 September 2026 at 13:00. No briefing session or site visit dates are stated in the document.

Enquiry number: AHT0000026954. No named contacts, emails, or submission address are provided in the document.

Returnable documents: completed and signed SBD forms as per the tender pack, including SBD 4 (Declaration of Interest) and SBD 9 (Certificate of Independent Bid Determination). Proof of CSD registration and valid tax compliance status PIN required. Bids must be submitted before the closing time; late submissions are disqualified.

Evaluation criteria not specified in the scope of work document.

Scope: Nitrogen purging services at PetroSA GTL Refinery, Mossel Bay, for unit 51 LPG HP Tank Farm.

Phase 1: Purge 2 x 211 m³ bullets (vessels 51VD165A and B) to reduce oxygen to below required level (target 0.5 vol%). Estimated duration 4 days, nitrogen requirement 12 tons.

Phase 2: Purge 2 x 2205 m³ spheres (51VS161A and 51VS164) to reduce oxygen to below required level. Estimated duration 6 days, nitrogen requirement 126 tons.

Method: Pressure cycle purging, pressurising with nitrogen between 50 kPa and 1200 kPa, venting, repeating until oxygen content reduced from 21 vol% to 0.5 vol%.

Supplier to provide all supervision, labour, equipment, and nitrogen. Must supply a 16-ton LIN (21,000 litre) portable ISO liquid nitrogen storage tank.

Minimum crew: 2 supervisors and 2 technicians (total 4), with 1 supervisor and 1 technician per 12-hour shift. PetroSA pays for minimum crew regardless of work.

Technical deliverables: PFD showing equipment from ISOTAINER to injection point; confirm vapourisation rate control method and expected flowrate; indicate design pressures (1725 kPa for all vessels); provide relief valve set pressures (N2 supply pressure setpoint 500 kPa); supply pressure test certificates with expiry dates; after site visit, provide marked-up plot plan and viable path for articulated N2 truck.

Procedures: Develop comprehensive Nitrogen Purging Procedure, submitted for approval by PetroSA's Blending and Storage Operations before work.

Working hours: 24 hours per day until purging complete.

Site power supply: 220V and 525V.

PetroSA supplies area for equipment setup, consumables, and any additional safety equipment required. Supplier provides all other materials, plant, equipment, tools, and transport.

Supplier must obtain permits to work, submit proof of calibration/certification of all equipment, and obtain written approval for any subcontractors.

Supplier must confirm in writing that staff are trained in equipment operation and safe nitrogen handling.

Supplier must keep a material register of all nitrogen purging machines and materials on site.

Clean up after completion is part of the job; payment may be withheld if not done.

Damage to PetroSA equipment due to negligence is for supplier's account.

Supplier must protect surrounding equipment during services.

Inclement weather: PetroSA pays for crews on site for minimum 4 hours or actual hours ordered to stand down.

Changes to scope: PetroSA may change scope by written notification; extra services charged at normal or agreed rates.

Method: Pressure cycle purging method - vessel pressurised with nitrogen, then vented, repeated until required oxygen concentration achieved. Number of cycles and mass of N2 calculated for pressure range 50 kPa to 1200 kPa. Phase 1: 24 hours per bullet, 1 day setup, 1 day demobilisation, total 4 days. Phase 2: 48 hours per sphere, 1 day setup, 1 day demobilisation, total 6 days. Supplier to provide project pre-engineering, method statements, design of N2 purging packs, and execution plan.

Supplier must have necessary skill, experience and knowledge of all nitrogen purging techniques and procedures. Personnel must be trained in operation of all equipment and safe handling of nitrogen. Supplier to provide full details of supervisors and technicians, including CVs.

Quality assurance: Services, workmanship, products, materials, documentation, tools and equipment must comply with ISO 9001:2015 and ISO 45001:2018.

Quality control plan: Supplier's QCP must cover all tasks and identify all witness hold points for PetroSA interventions. QCPs requested regularly. QCP issued to PetroSA as complete work pack for final acceptance before work commences.

Pricing schedule not specified in the scope of work. Invoices submitted against purchase order. Extra services charged at normal or agreed rates.

Pricing format not specified in the scope of work. Invoices submitted against a purchase order issued at commencement of agreement. Works Order / Job Card number must be reflected on invoices. Any extra services due to scope changes charged at normal or agreed rates. Rework due to supplier negligence is for supplier's account including materials, labour, consumables, and certification.

ISO 9001:2015 and ISO 45001:2018 compliance required for services, workmanship, products, materials, documentation, tools and equipment.

Safety equipment must bear SABS mark and be approved by PetroSA Safety Department.

Supplier must provide proof of calibration and certification of all equipment.

Supplier must confirm in writing that staff are trained in equipment operation and safe nitrogen handling.

Supplier must comply with PetroSA SHEQ requirements and environmental regulations.

Supplier must submit a Safety Plan specific to this agreement.

Supplier must submit a Quality Control Plan (QCP) covering all tasks and witness hold points.

Supplier must obtain necessary permits to work.

Subcontracting requires prior written approval from PetroSA.

Safety equipment: Supplier must provide all personnel with safety shoes, overall with long sleeves, hard hat, rain suit, safety gloves, hearing protectors, safety glasses, and harness for work on top of Isotainer. All safety equipment must bear SABS mark and be approved by PetroSA Safety Department. PetroSA supplies any other area-specific safety equipment free of charge; supplier replaces if damaged due to abuse.

Safety plan: Must be specific to this agreement and include standards and procedures for personnel safety, compliance with PetroSA SHEQ requirements, procedures for confined space entry, accountability of key personnel, responsibility of Safety Officers, safety indoctrination and meeting frequency, hazard identification through planning and monitoring, risk assessments, emergency procedures and first aid, housekeeping, basic PPE, accident/incident reporting, and compliance with PetroSA environmental regulations.

Minimum crew: 2 supervisors and 2 technicians (total 4), with 1 supervisor and 1 technician per 12-hour shift. PetroSA pays for minimum crew regardless of work. Additional crew requires prior written agreement.

Supplier responsibilities: provide required nitrogen, plant and equipment, small tools, manpower, supervision, transport.

Technical requirements: supply PFD, confirm vapourisation rate control, indicate design pressures, provide relief valve set pressures (500 kPa for N2 supply), supply pressure test certificates, provide marked up plot plan after site visits.

Procedures: develop and submit Nitrogen Purging Procedure for approval.

Normal operating conditions: purchase order, works order, no work without works order, no changes without authorisation.

Prerequisites: obtain permits to work, submit calibration/certification of equipment, no subcontractors without approval.

Site establishment: PetroSA provides area, supplier provides equipment and tools, no fuel from PetroSA, personnel qualifications confirmed in writing.

Materials: supplier supplies all materials except consumables (PetroSA supplies consumables), free issue materials remain PetroSA property, surplus returned, material register kept.

Identification: mark all material, plant, equipment, tools.

Safety equipment: as listed, SABS mark, approved by PetroSA Safety Department.

Utilities: PetroSA allocates area in contractor yard; supplier must apply for cell phone permits.

Working hours: 24 hours per day until purging complete.

General: clean up after job, damage to PetroSA equipment for supplier's account, protect surrounding equipment, power supply 220V and 500V.

Quality: ISO 9001:2015 and ISO 45001:2018 compliance.

Quality Control Plan: cover all tasks, witness hold points, issued as work pack.

Safety Plan: specific to agreement, include all required elements.

Changes: PetroSA may change scope, extra services charged at normal rates.

CSD National Support: 012 406 9222, [email protected]

PetroSA support (Phase 2 login issues): 012 663 8815, [email protected]

PetroSA (registration status or BEE vetting): 021 928 4731, advise the Tender Consultant (contact details on the online tender)

Bidders must register on the Central Supplier Database (CSD) at www.csd.gov.za (Phase 1) and then complete PetroSA's online supplier registration (Phase 2) via the provided portal. During Phase 2, bidders must complete a 7-step registration wizard, including providing BEE information (Step 6) and declaring any conflict of interest (Step 7). Required documents must be attached via the Manage Attachments function. Registration status is vetted by the Database Administrator; bidders should contact PetroSA if their status precludes online tendering.

No evaluation criteria are stated in the document. Bidders must be registered on the CSD and complete PetroSA's supplier registration to be eligible.

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Bidders must be registered on the Central Supplier Database (CSD) at www.csd.gov.za.

Bidders must complete PetroSA's online supplier registration (Phase 2) via the provided portal.

Local suppliers must provide BEE information and attach relevant BEE documents (e.g., BEE certificate) during registration.

Bidders must declare any conflict of interest during registration.

During Phase 2 registration, local suppliers must complete the required BEE information in Step 6 and attach relevant BEE documents (e.g., BEE certificate) via the Manage Attachments function.

Bidders must register on the Central Supplier Database (CSD) at www.csd.gov.za (Phase 1) and then complete PetroSA's online supplier registration (Phase 2) via the provided portal. Assistance contacts: CSD National Support 012 406 9222 / [email protected]; PetroSA support 012 663 8815 / [email protected].

For registration status or BEE vetting issues, contact PetroSA at 021 928 4731 and advise the Tender Consultant (contact details found on the online tender).

The tender is for nitrogen purging services at the PetroSA GTL refinery, Mossel Bay. The scope of supply and pricing requirements are contained in the Scope of Services Document (RFQ).

Closing date: 4 September 2026 at 13:00 (from the tender record). No other dates are stated in the document.

Technical enquiries: address to the buyer responsible for the quotation.

General enquiries (supplier queries, updating/completing supplier registration): Supplier Database Call Centre on 021 928 4731.

Quotations must be submitted electronically via the PetroSA E-Procurement Portal (www.procurement.petrosa.com, 'Login to Access Tenders/Quotes' tab). Late or non-electronic submissions will not be considered.

Returnable documents:

• SBD 9 (Certificate of Independent Bid Determination): certifies the price was set independently, with no collusion.
• Technical and commercial proposal, plus all supporting documentation where required.
• If sub-contracting more than 25% of the work, a sub-contracting agreement or letter of intent.
• If using a sister company, full documentation proving technical competence and a full explanation of service distribution.
• If submitting as a joint venture, full details on service provision, payment, liabilities, management, and a signed undertaking of agreement.
• Any comments or qualifications on PetroSA's Standard Terms and Conditions must be submitted with the quotation.

Disqualification risks:

• Not being registered and approved on the PetroSA portal.
• Not submitting electronically by the closing date and time.
• Failure to prove absence of fronting within 14 days of notification.

In addition to the technical and commercial proposal, the supplier shall provide all supporting documentation where required. If sub-contracting more than 25% of the work, a sub-contracting agreement or letter of intent must be submitted. If using a sister company, full documentation proving technical competence and a full explanation of service distribution must be provided. If submitting as a joint venture, full details on service provision, payment, liabilities, management, and a signed undertaking of agreement must be provided.

Pre-qualification: only suppliers who are at least a Level 4 B-BBEE contributor, or an EME or QSE, proceed to the technical/functionality evaluation stage.

Preference points are allocated under the Preferential Procurement Regulations 2024, using the 80/20 system for requirements up to R50 million (all taxes included) and the 90/10 system for requirements above R50 million.

Points are awarded for price and B-BBEE status level. Price points are calculated as Ps = 80(1 - (Pt - Pmin)/Pmin) for the 80/20 system or Ps = 90(1 - (Pt - Pmin)/Pmin) for the 90/10 system, where Ps is points scored, Pt is the comparative price of the tender under consideration, and Pmin is the comparative price of the lowest acceptable tender.

B-BBEE points: Level 1 (10 points in 90/10 system, 20 in 80/20), Level 2 (9/18), Level 3 (6/14), Level 4 (5/12), Level 5 (4/8), Level 6 (3/6), Level 7 (2/4), Level 8 (1/2), Non-compliant (0/0). Suppliers must have a valid B-BBEE certificate to receive these points.

Only technically acceptable tenders that meet the scope of work requirements are considered further. PetroSA may, at its discretion, request short-listed suppliers to engage in a reverse auction; suppliers who elect not to participate will not be eligible for award.

The scope of services is detailed in the Scope of Services Document (RFQ), which is part of the tender documentation. The tender is for nitrogen purging services at the PetroSA GTL Refinery, Mossel Bay. The following documents form part of the tender requirements:

• Standard Terms & Conditions for PetroSA (available at www.procurement.petrosa.com/terms.aspx)
• General Requirements for Suppliers working in the PetroSA Works
• Occupational Health General Conditions and Guidelines for Contractors Working on PetroSA Sites
• General Operating Procedures for Unit 51 Tank Farm

Suppliers must give preference to suitable local labour and liaise with local labour forums; preference should also be given to local black subcontractors.

The registered supplier on the PetroSA database must be the one submitting the quotation. An agent or local supplier cannot submit on behalf of a holding company and vice versa. For joint ventures, full details must be provided on service provision, payment details, liabilities, management, etc., with a signed undertaking of agreement should the joint venture be awarded the order or contract.

Exchange rate variation: From the date of an order or award, the supplier accepts the risk of additional cost due to exchange rate variation on imported content. Any additional cost between the quotation/tender date and receipt of the order or contract award is for PetroSA's account, provided the supplier clearly states the value of imported content on the quotation. The cost is based on the difference between exchange rates at the closing date and the award date, as published by the South African Reserve Bank.

Registration and approval:

• Suppliers must be registered and approved on the PetroSA E-Procurement Portal; unapproved or provisionally approved suppliers cannot submit quotations.
• Suppliers must also register on the National Treasury Central Supplier Database (CSD) at https://secure.csd.gov.za.

B-bbee:

• Pre-qualification requires at least a Level 4 B-BBEE contributor, or being an EME or QSE.
• A valid B-BBEE certificate must be in PetroSA's possession; expired or non-compliant contributors will not receive preference points.
• A B-BBEE improvement plan must be submitted with the tender.

Popi:

• Suppliers must upload their POPI Statement/Notice/Policy on their PetroSA online registration.

Declaration:

• SBD 9 (Certificate of Independent Bid Determination) must be completed.

Fronting:

• PetroSA condemns fronting and will investigate representations; failure to prove absence of fronting within 14 days of notification may lead to disqualification and restriction from doing business with PetroSA.

PetroSA endorses B-BBEE and reserves the right to give preference to B-BBEE suppliers or those forming partnerships/joint ventures with B-BBEE suppliers. Suppliers must submit a B-BBEE improvement plan with their tenders. Pre-qualification requires at least a Level 4 B-BBEE contributor or being an EME or QSE. Preference points are awarded for B-BBEE status level according to the table: Level 1 (10 points in 90/10 system, 20 in 80/20), Level 2 (9/18), Level 3 (6/14), Level 4 (5/12), Level 5 (4/8), Level 6 (3/6), Level 7 (2/4), Level 8 (1/2), Non-compliant (0/0). Suppliers must have a valid B-BBEE certificate to receive these points.

Fronting: PetroSA condemns any form of fronting and will conduct enquiries/investigations to determine the accuracy of representations made in quotations. If any fronting indicators are established, the supplier must prove fronting does not exist within 14 days of notification. Failure to do so may lead to disqualification and restriction from doing business with PetroSA.

The tender documentation includes the Occupational Health General Conditions and Guidelines for Contractors Working on PetroSA Sites, and the General Operating Procedures for Unit 51 Tank Farm. Suppliers must comply with these requirements.

Award is subject to the conclusion of a written agreement between the supplier and PetroSA. PetroSA's Standard Terms and Conditions take precedence over the supplier's own terms. Any comments or qualifications on PetroSA's Standard Terms and Conditions must be submitted with the quotation; negotiations will be conducted solely on that basis.

PetroSA reserves the right to withdraw, reissue, or divide the scope of supply and award more than one order or contract. PetroSA is not obliged to accept the lowest or any quotation. No agreement exists until a written contract signed by both parties is concluded or an official purchase order is issued and becomes unconditional. Even if a supplier scores the highest points, the award is subject to a due diligence before a purchase order or contract is concluded. PetroSA reserves the right not to award any quotation, including technically compliant ones, if commercially unattractive.

Exchange rate variation: From the date of an order or award, the supplier accepts the risk of additional cost due to exchange rate variation on imported content. Any additional cost between quotation date and receipt of order is for PetroSA's account, provided the supplier clearly states the value of imported content on the quotation. The cost is based on the difference between exchange rates at closing date and award date, as published by the South African Reserve Bank.

Suppliers must be registered and approved on the PetroSA E-Procurement Portal. Quotations must be submitted electronically via the portal by the closing date and time. Suppliers must upload their POPI Statement/Notice/Policy on their PetroSA online registration. PetroSA may issue Tender Bulletins; it is the supplier's responsibility to check the procurement website for bulletins prior to submission.

Pre-qualification for preferential procurement: only suppliers meeting the minimum requirements proceed to technical/functionality evaluation. Preference points are allocated under the Preferential Procurement Regulations 2024, using the 80/20 system for requirements up to R50 million and the 90/10 system for requirements above R50 million. Points are awarded for price and B-BBEE status level. Price points are calculated as Ps = 80(1 - (Pt - Pmin)/Pmin) for the 80/20 system or Ps = 90(1 - (Pt - Pmin)/Pmin) for the 90/10 system, where Ps is points scored, Pt is the comparative price of the tender under consideration, and Pmin is the comparative price of the lowest acceptable tender.