Supply of system control valves for oil waste plasma gasification project gas supply system

Closing date: 05 June 2026 at 12:00. Site briefing: Not compulsory but can be arranged if additional information is required.

Contact: Thulile Sokhela. Email: [email protected]. All queries must be submitted in writing to this contact only.

Submit quotation via email to [email protected] on or before 05 June 2026 at 12:00. Quotation validity: 90 days from closing date. Incomplete quotes may be disqualified. No goods or services to be delivered without an official Necsa Purchase Order. All queries must be directed in writing to the provided contact only; approaching other Necsa employees may result in disqualification.

Two-phase evaluation: Phase 1 (Technical/Functionality) requires a minimum score of 80/100 to progress. Criteria: Suitability of Product (30 points, mandatory—failure here nullifies other technical scores), Quality of Product (40 points, requires ISO 9001:2015 or OEM accreditation), and Lead-Time (30 points, scored as 30 for ≤4 weeks, 20 for ≤6 weeks, 0 for ≤8 weeks). Phase 2: 80/20 PPPFA system—80 points for price, 20 points for B-BBEE status level (Level 1: 20, Level 2: 18, ..., Non-compliant: 0). Non-submission of B-BBEE proof forfeits preference points but does not disqualify the bid.

Supply 3 control valves for the Oil Waste Plasma Gasification Project Gas Supply System: 1) Pressure regulator PCV1601D (main argon gas supply), 2) Pressure regulator PCV1601F (argon gas supply to Plasma Power Supply), 3) Pressure regulator PCV1602D (oxygen gas supply line to Plasma Reactor R1205). Requirements: All process connections must be Female threaded, NPT, ASME B1.20.1 class 1500 (minimum). All valves must be controlled via 4-20mA signal and provide position feedback (4-20mA). Clearly indicate Valve Tags (PCV1601D, PCV1601F, PCV1602D) on all submitted specifications and drawings. Refer to attached specification sheets (ENS-OWPVR-SPE-25033, 25034, 25032) and valve list (ENS-OWPVR-LST-24008).

Pricing must be fixed and firm, including all applicable taxes, freight, insurance until acceptance, duties, and disbursements. Quotation must be fully completed; incomplete quotes may be disqualified. Payment terms: Necsa’s General Conditions of Purchase apply. Orders above R30,000 are subject to PPPFA 80/20 evaluation.

Mandatory documents: Tax Clearance Certificate (SARS-issued), Declaration of Interest (SBD 4), B-BBEE Certificate or EME Affidavit, Letter of Good Standing (COID, if applicable), and any other requested certifications. Supply pump data sheets and curve documents. Failure to submit B-BBEE proof forfeits preference points. Subject to Necsa’s General Conditions of Purchase, PPPFA 2000, PPP Regulations 2022, and GCC.

Technical contact: Mr W Ludwick, Senior Process Engineer, Department: (PSU) Y1201. No email, phone, or submission address provided in this document. Check the main tender notice for additional contacts.

Returnable documents and submission instructions are not specified in this document. Refer to the main tender notice (NLM-QUO-26/095) for details on how and where to submit, required forms, and disqualification risks.

Suppliers must demonstrate capability in supplying nuclear-grade or high-safety industrial control valves and gas system components. Key evaluation points: Compliance with South African National Standards (SANS), particularly SANS 10087 for LPG systems. Experience with oxygen service piping and safety systems is essential. Adherence to intellectual property restrictions is required, as the document is confidential and property of Necsa.

Scope: Supply of control valves and associated gas supply systems for Oxygen (O2), Argon (Ar), LPG, and Methane (CH4) for an Oil Waste Plasma Gasification project. Key deliverables: Bulk liquid storage tanks, evaporators, pressure regulators, safety relief valves, cylinder banks, and associated piping. Technical requirements: Oxygen line sizing uses a linear velocity of 4m/s (ALARA principle). Signals must be provided to the PLCs of the FDP and NW PlasGas facilities. Tanks are vendor packages requiring instrumentation for pressure and liquid inventory. Vents must discharge to safe outdoor locations above roof level. Pressure regulators require inlet/outlet pressure indicators. Piping must be as short as possible and chemically cleaned/degreased for Oxygen service. Suppliers must advise on pressure relief valve sizing based on nozzle area. Compliance with SANS 10087 for LPG systems is required. References other project P&IDs (e.g., ENS-WOPVR-PID-24001, ENS-FDP-PID-24005).

No submission method, address, deadline, or required forms are specified in the document. Only a technical specification sheet is provided.

Eligibility is primarily technical. Suppliers must demonstrate capability to manufacture or supply a valve conforming to the detailed engineering specification. Compliance with referenced standards (e.g., ASME B1.20.1 for threading) is mandatory. Suppliers may be vetted by Necsa for security and quality assurance due to the project's sensitive nature.

Supply an oxygen pressure regulator (PCV1602D) for the Contaminated Waste Oil Plasma Gasification Project. Key requirements:

• Location: Necsa, Pelindaba, North-West Province (Outside Laboratory 150, Building V-H2).
• Safety Classification: Non-classified (N) and SC-3 (C).
• Quality Classification: Non-classified (N) and QC-3 (C).
• Process Fluid: Oxygen (gas).
• Design Conditions: Temperature 93°C, Pressure 21340 kPa(g).
• Pressure Ranges: Inlet 400–1000 kPa(g), Outlet/Setpoint 400 kPa(g), Maximum Differential 600 kPa.
• Flow: Mass flowrate 42.93 kg/h (normal), Critical Flow: No.
• Materials: Body/Bellows/Spring (Supplier to advise 304/304L SS), Seat (Die-formed flexible graphite with anti-extrusion rings), Disk/STEM (304/304L SS).
• Connections: Inlet/Outlet - Class 1500, 25 NB, Female Threading NPT (ASME B1.20.1).
• Valve Rating: Class 1500.
• Must include local pressure indicators on inlet and outlet.
• References: Multiple engineering documents and standards (e.g., Perry’s Handbook, ASME).

No submission method, address, deadline, or required forms specified. This is a technical specification sheet only. Bidders must refer to the official RFQ document (NLM-QUO-26/095) for submission details.

General: Applicants must be registered suppliers capable of providing industrial-grade control valves. Experience in nuclear or high-purity gas systems (e.g., argon) is advantageous. Compliance with South African procurement regulations and NECSA’s vendor requirements is mandatory. Technical: Proven track record of supplying valves for similar applications (high-pressure gas, stainless steel construction). Ability to meet ASME B16.5 and ASTM A182-F304/304L standards. Capacity to deliver within the project timeline.

Scope: Supply of a two-stage argon pressure regulator (PCV1601F) for the Contaminated Waste Oil Plasma Gasification Project. Location: Necsa, Pelindaba, North-West Province (Equipment: Outside Laboratory 150, Building V-H2). Classifications: Safety - Non-classified (N) and SC-3 (C); Quality - Non-classified (N) and QC-3 (C). Process Fluid: Argon (Gas). Design Conditions: Temperature 50°C; Pressure 23910 kPa(g). Performance: Inlet Pressure Range 400–1000 kPa(g); Regulator Setpoint (Outlet) 400 kPa(g); Max Differential Pressure 600 kPa; Mass Flowrate 0–10 kg/h. Mechanical: Valve Rating Class 1500; Flange Spec Inlet/Outlet - SS, ASTM A182-F304/304L, ASME B16.5 Class 1500, Pipe Size 15 NB. Materials: Body/Bonnet/Cap/Wetted parts - 304/304L Stainless Steel. Supplier must advise on seat leakage class, bellows, spring, and seat materials. Additional: Must include local pressure indicators on inlet and outlet sides.

Suppliers must: - Provide nuclear-classified components (Safety Classes SC-2/SC-3). - Comply with international standards (e.g., ASME B1.20.1). - Demonstrate expertise in meeting stringent operational conditions (pressure, temperature, fluid compatibility). - Handle confidential information securely. - Possess certifications for supplying components to nuclear or high-hazard process industries.

Supply control valves for the Gas Supply System of a Uranium Contaminated Waste Oil Plasma Gasification Demonstration Facility. Requirements: - Valve types: Pressure regulators (e.g., PCV1601D, PCV1601F, PCV1602D). - Fluids: Argon Gas, Oxygen Gas. - Safety Class: SC-2 or SC-3, Non-classified. - Process Connection: THRD (Female), Flange Spec. ASME B1.20.1. - Size: 15. - Materials: CF3M/A351-CF8M. - Operating Conditions: Ambient temperature, pressure ranges (e.g., 20000/600 kPa(g), 600/400 kPa(g)). - Special Notes: Valve PCV1602D must be ATEX cleaned for Oxygen service. - Refer to specification sheets (e.g., ENS-OWPVR-SPE-24008) and P&ID drawings (e.g., ENS-OWPVR-PID-24003).