Seawater CO2 System SOW -6-28-2024.pdf

SEAWATER CO2 SYSTEM – 1333ND24QNB130376

STATEMENT OF WORK

Custom Designed Borosilicate Vacuum Extraction Line

I. BACKGROUND INFORMATION

The Chemical Sciences Division (CSD) provides the measurement science, standards, technology, data and chemical informatics required to support the nation’s needs in the determination of chemical composition and chemical structure of gases, organic, and inorganic species. CSD is involved in developing measurement services to support ocean carbon metrology and enhancing NIST’s existing capabilities for greenhouse gas metrology. To determine the amount fraction of carbon dioxide (CO2) in air samples and dissolved inorganic carbon in seawater, the division seeks to procure a custom designed borosilicate vacuum extraction line which will enable researchers to acidify a sample of seawater with a known mass and then quantitatively extract and purify the carbon dioxide in the seawater sample. The vacuum extraction line will be modeled after the system developed and currently used at Scripps Institution of Oceanography in the Andrew Dickson seawater carbon dioxide reference material laboratory.

II. SPECIFICATIONS

The Contractor shall provide scientific glass blowing services to fabricate a custom borosilicate vacuum extraction line designed according to the specifications outlined by the CSD laboratory.

The vacuum line construction is designed to minimize the adsorption of carbon dioxide onto the glass and valve surfaces and consists of four modular units on the frontside with a mirrored but nonmodular rear vacuum line. The first section of the frontside will consist of an acidification module/sample introduction system which allows for the delivery of phosphoric acid from a 3 L reservoir into an acid chamber and then to a Wong pipette designed to deliver a gravimetric sample of seawater. Following the acidification module, along the second and third sections, the liberated gases from the seawater sample must be purified through a series of low temperature traps – an ethanol slush flask, a liquid nitrogen flask, and two ethanol/liquid nitrogen traps.

These sections require connections to Pirani pressure gauges (3) and a diffusion pump (1). The final section, the sample collection module will consist of a series of ports to flame seal the purified gas samples. This section must also be connected to a Pirani pressure gauge (1) and a diffusion pump (1). Preliminary schematics of the vacuum line and the required/suggested valves and joints are provided in Appendix 1 and Appendix 2. Note, design changes and substitutions may be warranted in cases where adapters are no longer available (e.g., Pirani gauge adaptors) or if Contractor recommends a more suitable substitute or design change. The price must include costs to ship the equipment to NIST and can travel to NIST (Gaithersburg, MD) for the Contractor to install the equipment and conduct initial testing.

III. TASKS

a. Task 1 – FABRICATION PLAN (DRAWINGS)

i. Work with CSD to produce drawings to outline fabrication plan.

Drawings should be provided as a pdf to subject matter expert (SME) and contracting officer representative (COR) but ideally prepared in AutoCAD or equivalent and clearly legible format.

b. Task 2 – FABRICATE VACUUM LINE

i. Fabricate vacuum line (Item 1 – Item 17, below) according to the approved fabrication plan.

Seawater CO2 System comprised of the following (approximate quantities in parentheses)

Item 1: Sample introduction system

• 3L round bottom flask (1)

• 29/40 outer ground joint (2)

• 29/40 inner ground joint (2)

• gooseneck valve: glass plug with Viton O-ring (2)

• 14/35 outer ground joint (3)

• 14/35 inner ground joint (2)

• 18/9 spherical ball joint (2)

• 18/9 spherical socket joint (3)

• 18/9 clamp (clamp size 18), stainless steel (3)

• 10 mm borosilicate tubing (half case), 5-foot length (1)

• 7 mm rod (min buy) clear glass corning Pyrex Rod - 5 ft. lengths (1)

Item 2: Wong Pipette (completed, will be supplied to Contractor)

• 14/35 outer ground joint (1)

• 14/35 inner ground joint (1)

• 4 mm evac single oblique high vacuum stopcock, oblique bore, hollow glass plug (2)

• 32 mm od mw tubing half case (1)

Item 3: Extraction flask

• 14/35 outer ground joint (1)

• 50/30 spherical ball joint (5)

• 50/30 spherical socket joint (4)

• 50/30 clamp (clamp size 50), stainless steel (5)

• 500 mL filter flask (1)

• 36 mm od tubing (half case) (1)

Item 4: CO2 Cleanup section

• 14/35 outer ground joint (2)

• 14/35 inner ground joint (2)

• 29/43 outer ground joint (1)

• 29/43 inner ground joint (1)

• 18/9 spherical ball joint (2)

• 18/9 spherical socket (1)

• 18/9 clamp (clamp size 18), stainless steel (2)

• 50/30 spherical ball joint (1)

• 50/30 spherical socket joint (1)

• 50/30 clamp (clamp size 50), stainless steel (1)

• 4 mm 90 deg high vacuum, evac stopcocks, hallow glass plug (6)

• 500 mL round bottom flask (2)

• 1 L round bottom flask (1)

Item 5: Vacuum non-glass hardware

• Pirani gauge w 1/8" NPT (2)

• pair: Pirani controller and gauge w 1/8" NPT (2)

• SS 1/8" NPT to 14/35 outer (adapter) (2)

• 1/2 borosilicate to Kovar (2)

• 1/8 NPT male stainless steel swage adaptor to 1/2 Kovar shank (2)

• or instead of the Kovar setup – GL-25 to 1/8 NPT, #303 Stainless steel thermocouple bushing (2)

• Bushings, internal, PTFE front seals, female #7 to 1/8 NPT #008 Viton O-ring (2)

• Internal thread #7 glass only: 12.7mm Tube OD, Accepts 6-7mm OD Tubing (2)

Item 6: U-traps, Three needed

• 14/35 outer ground joint (3)

• 14/35 inner ground joint (3)

• 50/30 spherical ball joint (1)

• 50/30 spherical socket joint (1)

• 50/30 clamp (clamp size 50) (1)

• 4 mm 90 deg high vacuum, evac stopcocks, hallow glass plug (2)

• 4 mm evac single oblique high vacuum stopcock, oblique bore, hollow glass plug (2)

• 10 mm rod (4 lengths min purchase) (1)

Item 7: Vacuum non-glass hardware, design input needed here See Appendix 1 (page 2)

• Pirani gauge w 1/8" NPT (1)

• pair: Pirani controller and gauge w 1/8" NPT (1)

• SS 1/8" NPT to 14/35 outer (adapter) (1)

• 1/2 borosilicate to Kovar (1)

• 1/8 NPT male stainless steel swage adaptor to 1/2 Kovar shank (1)

• 1/4 borosilicate to Kovar (to CO2 tank) (1)

• 1/2" Swagelok setup to CO2 tank (not sure what will be used) (1)

• or instead of the Kovar setup – Thermocouple bushing GL-25 screw thread to 1/8 NPT, #303 stainless steel (1)

• Bushings, internal, PTFE front seals, female #7 to 1/8 NPT, #008 Viton O-ring (1)

• Internal thread #7 glass only: 12.7mm Tube OD, Accepts 6-7mm OD Tubing (1)

Item 8: Sample collection ports

• 4 mm 90 deg high vacuum, evac stopcocks, hallow glass plug (6)

• Internal thread, glass only #7, 12.7mm Tube OD, Accepts 6-7mm OD Tubing (5)

• Internal bushing #7 (PTFE), Open Top, 7.5mm Opening, Nylon, #008 Viton O-Ring (5)

• 14/35 inner ground joint (6)

• 14/35 outer ground joint (6)

• 18/9 spherical ball joint (2)

• 18/9 spherical socket joint (1)

• 18/9 clamp (clamp size 18) (2)

• 50/30 spherical socket joint (1)

Item 9: Vacuum non glass hardware, design input needed here, See Appendix 1 (page 2)

• Pirani gauge w 1/8" NPT (1)

• pair: Pirani controller and gauge w 1/8" NPT (1)

• SS 1/8" NPT to 14/35 outer (adapter) (1)

• 1/2 boro to Kovar (1)

• 1/8 NPT male stainless steel swage adaptor to 1/2 Kovar shank (1)

• 1/4 boro to Kovar (to CO2 tank) (1)

• 1/2" swagelok setup to CO2 tank (1)

• or instead of the Kovar setup - Thermocouple bushing GL-25 screw thread to 1/8 NPT, #303 stainless steel (1)

• Bushings, internal, PTFE front seals, female #7 to 1/8 NPT #008 Viton O-ring (1)

• Internal thread #7 glass only: 12.7mm Tube OD, Accepts 6-7mm OD Tubing (1)

Item 10: Manifold on wet side w pumps plus 2 main traps

• T type 3-way high vacuum stopcock 4 mm hollow glass plug, bore evac (8)

• 18/9 spherical ball joint (12)

• 18/9 spherical socket joint (12)

• 18/9 clamp (clamp size 18) (12)

• 29/43 inner ground joint (2)

• 29/43 outer ground joint (2)

• 50/30 spherical ball joint (2)

• 50/30 spherical socket joint (2)

• 50/30 clamp (clamp size 50), stainless steel (2)

Item 11: Adapter sidearm

• 18/9 spherical ball joint (1)

• 18/9 spherical socket joint (1)

• 18/9 clamp (clamp size 18), stainless steel (1)

Item 12: Wong pipette or adapters manifold on back of wet line

• 14/35 inner ground joint (6)

• 14/35 outer ground joint (6)

• 18/9 spherical ball joint (2)

• 18/9 spherical socket joint (1)

• 18/9 clamp (clamp size 18), stainless steel (2)

• 4 mm evac single oblique high vacuum stopcock, oblique bore, hollow glass plug (2)

Item 13: Oil trap off main trap

• 4 mm 90 deg high vacuum, evac stopcocks, hallow glass plug (2)

• 18/9 spherical ball joint (2)

• 18/9 spherical socket joint (3)

• 18/9 clamp (clamp size 18), stainless steel (3)

• 29/43 inner ground joint (1)

• 29/43 outer ground joint (1)

Item 14: Other oil trap (maybe not needed)

• 4 mm 90 deg high vacuum, evac stopcocks, hallow glass plug (2)

• 18/9 spherical ball joint (2)

• 18/9 spherical socket joint (3)

• 18/9 clamp (clamp size 18), stainless steel (3)

• 29/43 inner ground joint (1)

• 29/43 outer ground joint (1)

Item 15: Filling rig with bottle

• 14/23 inner ground joint (2)

• 14/23 outer ground joint (2)

• 29/43 inner ground joint (1)

• 29/43 outer ground joint (1)

• 4 mm evac single oblique high vacuum stopcock, oblique bore, hollow glass plug (2)

• GL14 (glass thread only) hose connection (1)

• GL14 bent hose connection (1)

• GL14 aperture cap (1)

• #15 Chem-Thread internal thread (glass portion) (1)

• #15 Chem-Thread bushing (PTFE, Viton O-ring, 14mm opening) (1)

• 90 mm mw tubing (1)

• 14 mm tubing half case (1)

Item 16: Tube cracker and line to vacuum system

• 14/35 inner ground joint (4)

• 14/35 outer ground joint (4)

• 4 mm evac single oblique high vacuum stopcock, oblique bore, hollow glass plug (2)

• glass plug with O-ring needle valve (1)

• 1/2" od tubing for compression fittings (half case) (1)

• 1/4" od tubing for compression fittings (min purchase) (1)

Item 17: Vacuum hardware non glass

• 1/2" Ultra-Torr union fitting (1)

• Ultra-Torr fitting stepdown adaptor (size depends on client, assume 1/2" to 1/4" stepdown) (1)

Item 18: Installation of the Seawater Co2 System at NIST Gaithersburg Campus

• Installation of the Seawater Co2 System

IV. WARRANTY

The Contractor shall provide, at a minimum, a two-year warranty for the equipment. The warranty shall cover all parts from defects, labor, and shipment of equipment for repair. The warranty shall commence upon successful completion of delivery, installation, and testing based on required specifications.

V. DELIVERY TERMS

Delivery will be to Building 227/B363, NIST, Gaithersburg, Maryland. Normal duty hours are Monday through Friday, 8:00 a.m. to 5:00 p.m. Eastern Time, apart from Federal holidays.

VI. DELIVERABLES

Task Number Description Format Quantity Due Date Task 1 Electronic (.pdf) or paper copies of fabrication plan should be provided to clarify that the intended design aligns with CSD priorities.

AutoCAD or equivalent format type ideally should be used to create the drawing, but legible hand drawings are acceptable

One, unless multiple iterations are needed

1 month after receipt of order

Task 2 Vacuum extraction line shipped to NIST

Item 1 - Item 17, labeled and shipped to NIST SME or

COR

One 6 months after receipt of order

Task 3 Installation of the Seawater Co2 System and testing by CSD staff.

6 months after receipt of order

Standards of Acceptance: The NIST SME or COR shall review the fabrication plan and respond with an acceptance or request for revision email to the Contractor Point of Contact (POC) within 14 days of receipt of Task 1.

VII. INSPECTION AND ACCEPTANCE

Upon delivery, NIST SME will visually check to ensure that the correct items outlined as Item 1 through Item 17 were received. After installation, CSD will test vacuum line to ensure that all requirement components and fittings for the auxiliary devices (e.g., Pirani pressure gauges and diffusion pumps) meet the technical requirements outlined in the Specifications. Lastly, the entire vacuum line will be tested to demonstrate whether the needed vacuum pressure is achievable. The Contractor will go over training schedules and maintenance requirements of the vacuum line. The NIST SME and COR will review deliverables and determine if the following criteria are met:

1. The physical system matches the design agreed on in Task 1. Any changes to the design agreed on in Task 1, must have pre-approval and be accompanied with updated design files.

(within 2 weeks of order receipt)

2. All modular portions assemble together as set in the design agreed on in Task 1. (within 2 weeks of order receipt)

3. Using a roughing pump the system will be evacuated to <0.2 Pa. With the roughing pump enabled, a pressure of <0.2 Pa must be held for 24 hours. (within 45 days of order receipt)

4. Using a roughing and oil diffusion pump the system will be evacuated to <5 x 10-6 Pa. With the roughing pump and oil diffusion pumps enabled, a pressure of <5 x 10-6 Pa must be held for 24 hours. (within 45 days of order receipt)

5. The U traps will be tested by repeatedly submerging them into LN2, leaving for 24 hours and checking for cracks or losses in vacuum on heating to ambient lab temperature. (within 45 days of order receipt)

6. Ball trap will be similarly tested by filling the inner ball portion with LN2 for 24 hours and checking for cracks or losses in vacuum on heating to ambient lab. (within 45 days of order receipt)

7. Mock extraction to assess fluid flow and check for leaks. (within 45 days of order receipt)

VIII. INVOICING:

All invoices from the Contractor shall be submitted electronically in accordance with NIST Local- 54 Clause Billing Instructions. Invoices shall be sent electronically to the NIST Accounts Payable Office at invoice@nist.gov.

mailto:invoice@nist.gov

IX. PAYMENT SCHEDULE (This section to be revised as needed) Advance payment is not authorized. The Contractor must invoice in arrears according to the payment schedule. The Contractor shall be paid, in accordance with Net 30-day payment terms, upon receipt and acceptance of a proper invoice, in accordance with the following schedule:

100% after installation and acceptance by the TPOC of fully installed system, AND After the successful completion of the testing requirements set forth in this document under section set forth in this document, and after successful demonstration by the instrumentation that it performs IAW the technical requirements set forth in this document AND After receiving an invoice submitted properly, IAW the purchase order terms and conditions.

X. ATTACHMENTS

a. Appendix 1: Drawings and photographs of the system

b. Appendix 2: Drawings and photographs of the system

c. Appendix 3: Excel file with sample part list

XI. TRAVEL

Travel to the NIST in Gaithersburg, Maryland, is required for installation. All travel expenses will be included in the firm fixed price of this contract.

XII. MINIMUM CONTRACTOR QUALIFICATIONS

The Contractor shall fabricate a vacuum extraction line. All components used to manufacture the item must be new. Used or remanufactured equipment will not be considered for award. The use of “gray market” components that are not authorized for sale in the U.S. by the Contractor is not acceptable. The contractor must be an experienced scientific glassblowing business with prior experience supporting federal government laboratory applications.

Delivery shall be F.O.B Destination and shall occur in accordance with the delivery due dates provided in the above table.

FOB Destination means: The contractor shall pack and mark the shipment in conformance with carrier requirements, deliver the shipment in good order and condition to the point of delivery specified in the purchase order, be responsible for any loss of and/or damage to the goods occurring before receipt and acceptance of the shipment by the consignee at the delivery point specified in the purchase order; and pay all charges to the specified point of delivery. The contractor shall deliver the product to:

National Institute of Standards and Technology Shipping and Receiving 100 Bureau Drive, Building 301 Gaithersburg, MD 20899 POC: Rebecca Kraft, Building 227

XIII. GENERAL INFORMATION

Safety:

The Contractor employee shall be responsible for knowing and complying with all installation safety prevention regulations. Such regulations include, but are not limited to, general safety, fire prevention, and waste disposal.

Security:

NIST is a restricted campus. An identification badge is required for access for entry into buildings and is shown to the armed Security Police when entering the campus.

Regular Business Hours:

Regular business hours are Monday through Friday, 8:00 am to 5:00 pm Eastern Time, apart from Federal holidays.

Identification Badges:

Contractor employees shall comply with NIST identification and access requirements. Each Contractor employee shall wear a visible identification badge provided by the NIST Security Office.

Vehicle Registration:

All Contractor employees must register their vehicles with the NIST Security Office to gain access to the campus. A valid driver’s license, Government-furnished civilian ID, proof of insurance and current registration must be presented to the NIST Security Office, at which time a NIST vehicle pass will be issued. The pass shall be displayed on the vehicle in accordance with NIST Security Office instructions.