Supply of pressure regulator (control valve) for nitrogen gas supply line – NW plasgas demonstration facility

Closing date: 2026-06-12 at 17:00. No other dates (e.g., briefings, site visits, clarification deadlines) are provided in the document.

Dr K Moodley (Chief Process Engineer) is listed as approver. No contact details (email, phone, submission address) are provided in the document. Bidders must refer to the original RFQ for contact information.

The document is a technical specification sheet only. It does not specify submission method, address, deadline, or required forms. Bidders must refer to the original RFQ (NLM-QUO-26/098) for submission instructions, including where and how to submit, required returnable documents, and disqualification risks.

General: Applicants must be legally registered entities capable of supplying industrial control valves. Compliance with South African regulatory and safety standards is mandatory. Experience in nuclear or high-safety environments may be advantageous. Technical: Must demonstrate capability to supply valves meeting exact mechanical, material, and performance specifications. Address Note 3: Advise on valve size vs. pipeline size discrepancies and propose alternatives if needed. Familiarity with oxygen gas applications and safety considerations is required. Legal: Must comply with Necsa’s procurement policies and South African public sector tendering regulations. Willingness to sign non-disclosure agreements (NDA) is required due to the restricted nature of the document.

Supply a flow control valve (FV1510J) for oxygen gas supply to plasma reactor R1403 at the NW PlasGas Demonstration Facility (Necsa, Pelindaba, North-West Province). Key requirements: Purpose: Regulate oxygen feed rate into reactor R1403. Location: Process area inside Laboratory-150, Building V-H2. Fluid: Oxygen gas (mass flow rate: 32.76 kg/h, volume flow rate: 3.69 m³/h, inlet pressure: 4.86 bar, outlet pressure: 0.845 bar). Valve specifications: Nominal size: 3/4 inch, port diameter: 1/2 inch. Pipeline size: 25 NB, Sch 40. Process connections: Threaded, Class 150, RF, SS, ASTM A182-F304/304L (ASME B16.5 if flanged). Valve rating: 150#. Material (wetted parts): 304/304L Stainless Steel. Type: Globe valve, fail position: Fail Closed (FC). Control characteristics: Equal percentage. Positioner: Electrical, 4-20 mA input signal. Supplier must: Advise on impact if valve size exceeds pipeline size and propose alternatives. Comply with referenced documents (e.g., P&ID diagrams, energy/mass balance reports, valve sizing calculations). Safety classification: Non-classified (N) and SC-2(C). Quality classification: Non-classified (N) and QC-2(C).

General:

• Must be a registered supplier (likely with Necsa or South African vendor databases).
• Compliance with South African procurement laws and NECSA’s procurement policies is required.
• Must demonstrate ability to deliver to Pelindaba, North-West Province.

Technical:

• Experience in supplying high-pressure control valves for industrial or nuclear applications.
• Capability to meet ASME/ISO standards for materials and performance.
• Proven track record with similar projects (references may be required).

Scope: Supply of an Instrument Air Pressure Regulator (PCV 1709) for the PTFE Filter Destruction Demonstration Facility.

Location: Necsa, Pelindaba, North-West Province (Inside Laboratory 131, Building V-H2).

Process Fluid: Instrument air grade ISO 8573-1:2010 [3:4:1].

Design Specifications:

• Design Pressure: 1965 kPa(g).
• Design Temperature: 100°C.
• Operating Pressure Range (upstream): 100 to 750 kPa(g).
• Valve must regulate pressure within 100 to 750 kPa(g).
• Maximum differential pressure allowed: 650 kPa.
• Volumetric flow rate: 18.75 m³/h @ 20°C and 500 kPa(g).

Mechanical Requirements:

• Valve Rating: Class 1500.
• Inlet/Outlet: 15 NB, Class 1500 flanges (CS, ASTM A105, ASME B16.5). Supplier may advise on alternatives.
• Materials: Body and Bonnet/Cap: Carbon Steel. Other wetted parts: Supplier to advise.

Instrumentation:

• Must include local pressure indicators upstream and downstream of the regulator.
• Pressure read-out range: 0 to 850 kPa(g).

References: Detailed reference documents and drawings are listed (e.g., P&ID ENS-NWPVR-PID-24014).

General: Applicants must be registered suppliers with the South African Nuclear Energy Corporation (Necsa) or meet its vendor qualification requirements. Compliance with South African regulatory and safety standards for nuclear/industrial facilities is mandatory. Technical: Proven experience in supplying high-pressure control valves for gas systems, particularly oxygen or similar reactive gases, is required. Capability to provide valves with 316 SS construction and ASME-compliant flanges (Class 1500, 25 NB) is essential. Ability to meet SC-3 (Safety Class 3) and QC-3 (Quality Class 3) requirements is mandatory. Certifications for materials (e.g., ASTM A182-F316/316L) and manufacturing standards (e.g., ASME B16.5) must be provided. Legal: Valid business registration and tax compliance in South Africa are required. Adherence to Necsa’s confidentiality and intellectual property terms (document is proprietary) is mandatory.

Scope: Supply of a system control valve (pressure regulator) for the oxygen gas supply line to the Plasma Reactor R1403 at NECSA's NW PlasGas Demonstration Facility in 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 Conditions: Process fluid is oxygen (gas). Design temperature: 93 °C. Design pressure: 21340 kPa(g). Operating pressure (upstream): 400 to 1000 kPa(g). Controlled outlet pressure (setpoint): 400 kPa(g). Valve Specifications: Valve rating: Class 1500. Inlet/outlet pipe size: 25 NB. Flange specification: SS, ASTM A182-F316/316L, ASME B16.5 (supplier may advise on alternatives). Maximum differential pressure allowed: 600 kPa. Maximum shut-off differential pressure: 1000 kPa(g). Mass flowrate: 32.8 kg/h. Fail action: Not applicable. Seat leakage class: Supplier to advise. Materials of Construction: Body: 316 Stainless Steel. Bellows: Die-formed flexible graphite with anti-extrusion rings. Spring: Supplier to advise. Disk and stem: 316 Stainless Steel. Bonnet/cap: 316 Stainless Steel (two-stage). Instrumentation: Local display required. Alarm/switch interlocks: Not specified (N/A or dash). Referenced Documents: Design and process details are supported by ENS-NWPVR-PID-24004, ENS-NWPVR-CLC-24013, and other technical references listed in the specification sheet.

Evaluation will be based on compliance with technical specifications. Suppliers must: - Provide valves meeting all technical and mechanical specifications. - Ensure materials comply with ASTM/ASME standards (e.g., ASTM A105, ASME B16.5). - Advise on alternatives for flange specifications and wetted/non-wetted parts. - Provide seat leakage class information. - Comply with referenced documents (Perry's Chemical Engineers Handbook, Necsa reports ENS-NWPVR-REP-24004 and ENS-NWPVR-PID-24014).

Scope: Supply of an instrument air pressure regulator (PCV 1708) for the PTFE Filter Destruction Demonstration Facility. Installation location: Necsa, Pelindaba, North-West Province, inside Laboratory 131, Building V-H2.

Safety and Quality Classification: Non-classified (N and C).

Process Fluid: Instrument air, grade ISO 8573-1:2010 [3:4:1], state: gas.

Design Conditions: Temperature: 100°C, Pressure: 1965 kPa(g).

Operating Conditions: - Temperature: -2.6°C (min), 20°C (normal), 40°C (max). - Upstream Pressure: 100 kPa(g) (min), 500 kPa(g) (normal), 750 kPa(g) (max). - Volumetric flow rate: 18.75 m³/h at 20°C and 500 kPa(g).

Valve Requirements: - Pressure regulation range: 100 to 750 kPa(g). - Maximum differential pressure allowed: 650 kPa. - Maximum shut-off differential pressure: 750 kPa. - Critical flow: Not applicable. - Seat leakage class: Supplier to advise. - Must include local pressure indicators (upstream and downstream) with a read-out range of 0 to 850 kPa(g).

Mechanical Specifications: - Body, bonnet/cap, wetted and non-wetted parts: Carbon Steel. - Valve rating: Class 1500. - Flange spec: CS, ASTM A105, ASME B16.5 (supplier may advise alternatives). - Pipe size: 15 NB (inlet and outlet). - Bellows, spring, seat disk, and stem: Supplier to advise materials.

References: P&ID Number ENS-NWPVR-PID-24014, Line Number 15-17-AICX-087.

Evaluation will be based on: Compliance with all technical specifications for the instrument air pressure regulator (PCV 1710), including pressure regulation range (100–750 kPa(g)), mechanical requirements (Class 1500 rating, carbon steel construction), and instrumentation (local pressure indicators with 0–850 kPa(g) range). Adherence to referenced standards (ASME B16.5, ASTM A105, ISO 8573-1:2010). Submission of required documentation (e.g., material certifications, test reports). Likely consideration of supplier experience in high-specification industrial or nuclear applications.

Scope: Supply of an instrument air pressure regulator (PCV 1710) for the PTFE Filter Destruction Demonstration Facility at Necsa, Pelindaba (North-West Province).

Installation: Inside Laboratory 131, Building V-H2, on the instrument air supply line to air-driven diaphragm pump P83165.

Process Fluid: Compressed air, grade ISO 8573-1:2010 [3:4:1], gas state.

Design Conditions: Temperature up to 100°C, pressure up to 1965 kPa(g).

Operating Conditions:

• Temperature range: -2.6°C to 40°C (normal: 20°C).
• Upstream pressure range: 100–750 kPa(g) (normal: 500 kPa(g)).
• Volumetric flow rate: 18.75 m³/h at 20°C and 500 kPa(g).
• Maximum differential pressure across regulator: 650 kPa.
• Maximum shut-off differential pressure: 750 kPa.
• Critical flow: Not applicable.

Pressure Regulation: Must regulate within 100–750 kPa(g) range. Actual set-point to be confirmed after pump P83165 selection.

Mechanical Requirements:

• Valve rating: Class 1500.
• Body, bonnet/cap: Carbon steel (two-stage design).
• Bellows, spring, seat disk, and stem: Supplier to advise materials (carbon steel for seat disk and stem).
• Process connections: Inlet/outlet flanges (CS, ASTM A105, ASME B16.5) with Class 1500 rating, pipe size 15 NB. Supplier may propose alternatives.
• Seat leakage class: Supplier to advise.

Instrumentation: Must include local pressure indicators (upstream and downstream) with 0–850 kPa(g) read-out range. Remote or recording instruments are not required.

Referenced Documents: P&ID ENS-NWPVR-PID-24014, Line Number 15-17-AICX-089, Pipe Diameter Verification Report ENS-NWPVR-REP-24004.

No submission method, address, deadline, or required forms are specified. Only a technical datasheet (ENS-NWPVR-SPE-24006) is provided. Suppliers must infer submission details from the tender record (NLM-QUO-26/098).

Evaluation is open to suppliers capable of meeting technical and quality specifications. Key criteria include: Compliance with South African and international standards (e.g., ASME B16.5, ASTM A182-F316/316L). Material certifications (e.g., ASTM A182-F316/316L) and quality assurances (QC-3) are required. Preferable: Prior experience in nuclear or high-pressure gas systems. Must adhere to Necsa’s confidentiality and IP policies (document is proprietary).

Scope: Supply of a system control valve (pressure regulator) for the argon gas supply line to the Plasma Power Supply Y1401 in the NW PlasGas Demonstration Facility. Location: NECSA, Pelindaba, North-West Province. Outside Laboratory 150, Building V-H2. Safety/Quality Classification: Non-classified (N) and SC-3(C) / QC-3(C). Process Fluid: Argon gas (gas state). Key Operating Parameters: Measurement range: 0-1500 kPa(g). Controlled (setpoint) pressure: 400 kPa(g). Design pressure: 24820 kPa(g). Design temperature: 98°C. Operating temperature: -2.6°C to 40°C. Operating pressure (upstream): 400-1000 kPa(g). Mass flow rate: 0-10 kg/h. Valve Specifications: Valve rating: Class 3000. Inlet/Outlet: 15 NB, Class 3000 flanges. Flange spec: SS, ASTM A182-F316/316L, ASME B16.5 (supplier may advise on alternatives). Material of Construction: Body, bonnet/cap: 316 Stainless Steel. Bellows: Die-formed 316 Stainless Steel with flexible graphite and anti-extrusion rings. Seat, disk, and stem: Supplier to advise. Other Requirements: Maximum shut-off differential pressure: 1000 kPa(g). Seat leakage class: Supplier to advise. Maximum differential pressure allowed across control valve: 600 kPa. Local display required: Yes. Critical flow: No. P&ID reference: ENS-NWPVR-PID-24004. Line number: 15-13-GAVP-10.

Phone: 011 2345678. No other contact details (name, email, department, or submission address) are provided in the document.

The document does not specify submission method, address, required forms, or disqualification risks. Only the closing date (12 June 2026, 17:00) is available from the tender record. Bidders must confirm submission details directly with the issuing organization.

General: Applicants must be legally registered entities capable of supplying industrial-grade valves. Experience in nuclear or high-safety applications is likely required. Compliance with South African procurement laws is mandatory. Technical: Manufacturers must demonstrate capability to produce valves meeting ASME, ASTM, and ATEX standards. Prior experience in nuclear or chemical processing projects is advantageous. Ability to supply valves with specified materials (e.g., 316 SS, PTFE) and certifications is required. Commercial: Competitive pricing and delivery timelines must be provided. Financial stability and ability to fulfill large-scale orders may be evaluated.

Supply system control valves for the NW Plasma Gasification (NW PlasGas) Demonstration Project. Key requirements: Valve types: Globe valves (e.g., FV1510J, FV1501C) and pressure regulators (e.g., PCV1301B, PCV1302B, PCV1303B). Materials: Primarily 316 SS (Stainless Steel) with ASTM A182, A351-CF8M, or equivalent. Design conditions: Temperatures range from ambient to 93°C; pressures up to 24820 kPa(g). Operating conditions: Temperatures up to 400°C; pressures up to 600 kPa(g). Fluid media: Oxygen gas, aqueous KOH solution, argon gas, nitrogen gas. Safety classifications: Non-classified, SC-2, SC-3. Flange specs: ASME B16.5, ratings 150# or 1500#, types SW (socket weld) or RF (raised face). Additional requirements: ATEX-rated for some valves; fail positions (FC = fail closed, FO = fail open); anti-extrusion/graphite packing with PTFE discs. Quantities: Total of 6 valves listed. Certifications: ATEX, ASME, ASTM compliance required where specified.

Closing date: 12/06/2026 at 17:00. Quotation validity: 90 days from closing date. Site briefing: Not compulsory but can be arranged on request.

Contact person: Catherine Matima. Email: [email protected]. All queries must be submitted in writing to this contact.

Submit quotation via email to [email protected] on or before 12/06/2026 at 17:00. Quotation must be complete; incomplete submissions may be disqualified. Quotation validity period: 90 days from closing date. Site briefing is not compulsory but can be arranged if additional information is required. Direct all queries in writing to the provided contact; approaching other Necsa employees may result in disqualification.

Two-phase evaluation: Phase 1 (Functionality/Technical) requires a minimum score of 80/100 to progress. Criteria: Suitability of product (30 pts, based on valve make/model and data sheets), Quality of product (40 pts, ISO 9001:2015 accreditation for supplier or OEM), Lead-time (30 pts: 4 weeks = 30 pts, 6 weeks = 20 pts, 8 weeks = 0 pts). Phase 2 (PPPFA 80/20 system): 80 pts for price, 20 pts for B-BBEE status level (Level 1 = 20 pts, Level 2 = 18 pts, Level 3 = 14 pts, Level 4 = 12 pts, Level 5 = 8 pts, Level 6 = 6 pts, Level 7 = 4 pts, Level 8 = 2 pts, Non-compliant = 0 pts). Failure to submit B-BBEE proof means 0 preference points. Orders above R30,000 are evaluated under this system.

Supply system control valves for the NW Plasma Gas (Low-Level Waste Plasma Gasification) Demonstration Project. Valves must comply with the attached Valve List [ENS-NWPVR-LST-24002, Rev.5] and P&ID diagrams [ENS-NWPVR-PID-24002 to 24015]. Key notes: PV1202B and PV1410B valve sizes to be determined during HVAC design. Valves marked 'Y' are shared between NW PlasGas and CWOPG facilities; 'N' are exclusive to NW PlasGas. Pressure regulators PCV1706-PCV1710 are bundled with specific pumps (see notes 4-8 in the document). Necsa complies with ISO 9001, ISO 14001, OHSAS 18001, and RD 0034 standards.

Pricing must be fixed and firm, inclusive of all applicable taxes, freight, insurance until acceptance, duties, and disbursements. Incomplete quotes may be disqualified. Payment terms: As per Necsa’s General Conditions of Purchase. Orders above R30,000 are subject to PPPFA 80/20 evaluation; orders above R1M follow the tender process.

Required documents: Tax Clearance Certificate (SARS PIN), Declaration of Interest (SBD 4), B-BBEE Certificate (or EME Affidavit), Letter of Good Standing (COID, if applicable), pump data sheets and curves. Must comply with Necsa’s General Conditions of Purchase, PPPFA 2000, PPP Regulations 2022, and GCC. Anti-corruption: No gifts, payments, or inducements to Necsa employees or representatives. Failure to submit B-BBEE proof results in 0 preference points.

Evaluation will be based on compliance with all technical specifications, including: material requirements (ASTM A182-F316/316L for body, bonnet, seat, disk, stem, and wetted/non-wetted parts), flange specifications (SS, ASME B16.5, Class 1500), and process conditions (design temperature 93°C, design pressure 21,340 kPa(g), operating ranges for temperature and pressure). Suppliers must provide documentation for seat leakage class, flange alternatives, and adherence to referenced engineering standards (e.g., ASME B16.5) and calculations.

Scope: Supply of a pressure regulator (control valve) for the main nitrogen gas supply line to the NW PlasGas Demonstration Facility at Necsa, Pelindaba, North-West Province. Equipment location: Outside Laboratory 150, Building V-H2.

Key Technical Requirements:

• Process Fluid: Nitrogen (Gas).
• Design Temperature: 93°C. Design Pressure: 21,340 kPa(g).
• Operating Conditions:
• Temperature: -2.6°C (min), 25°C (normal), 40°C (max).
• Upstream Pressure: 400 kPa(g) (min), 600 kPa(g) (normal), 1,000 kPa(g) (max).
• Valve Inlet Pressure: 400–1,000 kPa(g).
• Valve Outlet Pressure (Regulator Setpoint): 400 kPa(g).
• Maximum Differential Pressure Across Valve: 600 kPa.
• Mass Flowrate: 5.9 kg/h.
• Maximum Shut-Off Differential Pressure: 1,000 kPa(g).
• Material Specifications:
• Body, Bonnet/Cap: 316 SS.
• Bellows: Die-formed flexible graphite with anti-extrusion rings (316 SS).
• Seat, Disk, Stem: 316 SS.
• Wetted and Non-Wetted Parts: 316 SS.
• Process Connections:
• Flange Spec: SS, ASTM A182-F316/316L, ASME B16.5 (or supplier-advised alternative).
• Flange Rating: Class 1500. Pipe Size: 15 NB (Inlet and Outlet).
• Valve Rating: Class 1500.
• Seat Leakage Class: Supplier to advise.
• Critical Flow: Not applicable. Fail Action: Not applicable.
• Safety Classification: Non-classified (N) and SC-3(C). Quality Classification: Non-classified (N) and QC-3(C).

Referenced Documents:

• P&ID Number: ENS-NWPVR-PID-24004. Line Number: 15-13-NHVP-11.
• Process Gases Requirements: ENS-NWPVR-CLC-24013.