Exhibit A - ED0045548- SSR2 Edge Welded Bellows Procurement Specification.pdf

PIP-II

Procurement and Fabrication Specification

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

WELDED BELLOWS PROCUREMENT SPECIFICATION

Document Number: ED0045548 Rev A

Fermi National Accelerator Laboratory 1

PIP-II SSR2 Cryomodule

- Procurement and Fabrication Specification -

SSR2 PROD EDGE-WELDED BELLOWS

PROCUREMENT SPECIFICATION

Author: J. Delgado

Document Number: ED0045548 Rev –

Document Approval Date Approved

Originator J. Delgado As in TC

Checker J. Bernardini As in TC

Approver M. Parise As in TC

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 2

Revision History

Author Revision Date Description of Change

J. Delgado November 2025 Initial Release

J. Delgado February 2026 Minor changes to Section 1, 3.10, 3.5, Creation of

Section 4

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 3

Table of Contents

1 Scope 4

2 Procurement Specification 4

2.1 Bidding Phase 5

2.2 Technical and Cost Evaluation Phase 5

2.3 Execution Phase and Hold Points 5

3 Fabrication Specification 7

3.1 Materials 7

3.2 Dimensional conformance 7

3.3 Welding 8

3.4 Examination 8

3.5 Dimensional Control 8

3.6 Leak testing 9

3.7 Serial number stamping 10

3.8 Cleaning Procedure 11

3.9 Quality controls 11

3.10 Incoming Inspection at Fermilab 12

3.11 Packaging 13

4 Appendix 15

4.1 List of Drawings 15

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 4

1 Scope

The Single Spoke Resonator Type 2 Cryomodule (SSR2 CM) is one of the five different types of cryomodules

(total of 25 units) that will constitute the PIP-II linear accelerator complex. The PIP-II linac will house a total of seven SSR2 cryomodules (CM’s). Each cryomodule contains accelerating cavities and focusing lens solenoids interconnected by edge-welded bellows. The present specification is intended to inform the procurement, fabrication, and assembly of these edge-welded bellows sub-assemblies for the SSR2 CM, in the quantities indicated in Table 1.

Top Assembly Drawing Description Total Order Quantity

F10128892 CAVITY TO CAVITY BELLOWS WLDMT 14

F10128914 CAVITY TO SOLENOID BELLOWS WLDMT 14

F10128926 CAVITY TO BPM BELLOWS WLDMT 21

F10255512 KIT, SSR2 PROD BEAMLINE DS END-FLG 7

F10255454 KIT, SSR2 PROD BEAMLINE US END-FLG 7

F10188422 SSR1 CAVITY TO SOLENOID BELLOWS WLDMT 1

Table 1: Quantities and Top Assembly Drawing

The Manufacturer shall provide all materials necessary to fabricate complete deliverables.

The Manufacturer shall provide manufacturing engineering services required to generate internal shop drawings and all documentation needed to manage and support their suppliers.

The Manufacturer shall provide all labor to assemble, test, and supervise the manufacture of all components regardless of where these are made: within the manufacturer’s plant or in a second facility or sub-contractor.

The Manufacturer shall fabricate jigs and fixtures to ensure flange faces, ports, brackets, and other important components are maintained to specified tolerances and are not damaged during transportation, testing, and storage. Any information of a proprietary nature must be identified in the bid response.

FFDG is requesting that offerors provide firm-fixed pricing for DAP shipping (HTS code 8543.90.88.45) as part of their firm-fixed-price proposal to the RFP.

2 Procurement Specification

Purchase Order will be owned and managed by Fermilab Forward Discovery Group (FFDG).

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 5

2.1 Bidding Phase

Bidder shall provide Quotation including all costs to deliver the items listed in Table 1, along with the following documentation:

a) Schedule that meets a lead time of 12 months, starting from the date that the FFDG Purchase

Order is awarded to the bidder running through fabrication, including hold points reported in

Table 2.

b) Technical Proposal to demonstrate the ability of the bidder to deliver the assembly with performance that meet or exceed the Fabrication Specifications reported in Section 3 of this document.

c) Management Control Plan to demonstrate the ability to ensure the required quality standard

(see Section 3) throughout the entire execution of the project. If the bidder has a Quality

Assurance Plan (QAP), it should be included with the bid.

d) Past Experience including examples of past projects (within the last five years) that closely match the scope in complexity and value, and that best illustrate the bidder’s capability, experience, timeliness, and performance. Examples (from these projects) of documentation to meet the requirements described in Section 3.3 in terms of welding process, inspection and testing will be considered for the technical evaluation.

All required documentation shall be organized with a table of contents and corresponding sections.

2.2 Technical and Cost Evaluation Phase

FFDG Purchase Order is awarded to one bidder after that the proposals will have been evaluated by technical and cost evaluation teams.

2.3 Execution Phase and Hold Points

Upon FFDG PO award, the Manufacturer shall assign a primary technical contact and a primary commercial contact for communication with FFDG representatives. All communications (i.e.

emails, meetings) regarding this PO should be in English. All deliverables should be submitted in electronic form.

2.3.1 Hold Point: Kick-off Meeting

Within two weeks from FFDG purchase order award, a kick-off meeting shall be scheduled to initiate technical and commercial discussion between the technical and commercial

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 6 representatives from FFDG and the Manufacturer. Action items from the meeting shall be addressed within one (1) week.

2.3.2 Ongoing Communications

Upon conclusion of the kick-off meeting, FFDG expects to receive bi-weekly a status report via e-mail from the manufacturer. Also, a monthly meeting held by videoconference shall be regularly scheduled to discuss technical and commercial updates. The meetings will be held in English.

However, FFDG representatives are always available to respond any time if questions will arise.

2.3.3 Hold Point: MRR

Within eight weeks from FFDG purchase order award and before starting any fabrication/procurement activity, a meeting to conduct the Manufacturing Readiness Review

(MRR) shall be organized to allow FFDG reviewers to assess the Manufacturer’s level of preparation to proceed to the manufacturing and procurement phase. Electronic copies of the deliverables detailed in Table 2 for the MRR shall be sent to FFDG representatives before the MRR takes place.

The MRR’s recommendations (if any) based on the presented material (see MRR deliverables in

Table 2), shall be addressed within two (2) weeks from the conclusion of the MRR. Upon conclusion of the MRR, the Manufacturer will be allowed by FFDG to proceed with the fabrication / procurement phase.

2.3.4 Hold Point: SRR

The completed units shall be released for shipping after a timely review of the deliverables in Table

2 for the Shipping readiness Review (SRR) by FFDG representatives.

2.3.5 Hold Points Map

A Hold Point is defined as the moment in time wherein the process needs to be stopped to allow a FFDG representative to perform reviews and QCs deemed necessary. Table 2 lists the main hold points and associated documentation deliverables for this project.

Hold Point

Description Deliverables When required

A

Kick-off Meeting

Address action items from the meeting

Within 2 weeks from FFDG purchase order award and before starting any Fabrication

/ Procurement

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 7

B

Manufacturing Readiness Review(s)

(MRR)

MDED (see section 3.2) Welding documentation (see section 3.3)

Detailed MIP and Travelers’ template (see section 3.9)

Within 8 weeks from FFDG purchase order award and before starting any Fabrication

/ Procurement

C Shipping

Readiness Review (SRR)

Final version of Welding documentation (see section 3.3) Examination report(s) (see section 3.4)

Metrology Control report(s) (see section 3.5) Leak Check report(s) (see section 3.6)

Final version of MIP Final version of MDED

Discrepancy report(s) (If applicable) CMTRs (see sections 3.1) Visual Inspection Reports

Before shipping

Table 2: Hold Points and Documentation Deliverables for Fabrication Phase.

3 Fabrication Specification

This section provides a technical introduction of the scope, assembly to be manufactured, quality controls, and shipping plan.

3.1 Materials

Materials are specified in the referenced drawings. The use of any materials non-listed in the drawings is excluded by the present specification. Under exceptional conditions FFDG may approve other materials through an MDED (described in Section 3.2).

Certified Mill Test Reports (CMTR) of all raw materials used to fabricate deliverables shall be provided to FFDG as part of the deliverables of the SRR (see Table 2). These material certifications shall include all processes and tests with grade and composition being clearly identifiable and traceable to the respective component.

If the vendor obtains components from a subcontractor, the vendor is responsible to prove that the materials and welds for the components meet compliance requirements.

3.2 Dimensional conformance

All part numbers in Table 1 shall have corresponding drawings to be used by the Manufacturer for configuration control and dimensional conformance, provided by FFDG. Dimensional variances and overall envelope configuration shall be maintained within specified tolerances.

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

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The drawings supplied as part of this request for proposal are to be considered near-final release.

The final set of drawings (latest revisions), including minor modifications that might occur during the bidding phase, will be given to the Manufacturer at the time of the kick-off meeting.

The Manufacturer may decide to use the drawings provided by FFDG for fabrication, or to produce its own drawings. Any change or deviation from the set of drawings provided by FFDG shall be listed in a Manufacturer’s Drawings Exception Document (MDED). The Manufacturer shall not proceed to the next step until FFDG provides a written approval to the MDED. FFDG is not accountable for any change in the drawings not listed in the MDED. The MDED can be revised and approved throughout the entire duration of the project.

3.3 Welding

All weld joints shall conform to types and sizes called out on drawings provided by FFDG, unless otherwise listed in the MDED approved by FFDG. Weld joints filler material is specified in the notes of referenced drawings.

All welding process, inspection and documentation shall be performed with a weld assurance program (WAP), developed in accordance with related pressure vessel codes of ASME B&PV section VIII Division I, 2021. All welders shall be qualified to the ASME B&PV section IX, 2021.

The Manufacturer shall ensure that no entrapped gases, fluxes, pits, cracks, or like imperfections are left in the heat affected zones.

Post cleaning of welds with a wire brush only is acceptable (prior to final leak checking) and required to leave the surface in a bright finish condition with no trace of solvent residue.

3.4 Examination

Examination of all the components shall be completed according to ASME B31.3-2020 341.4.1 (a) and (c). Documentation of the examination shall be provided as part of the final documentation, as indicated in Table 2.

3.5 Dimensional Control

CMM measurements and other inspections as specified shall be performed on each of the bellows sub-assemblies and the subcomponents listed in Table 3 to confirm compliance with the dimensional tolerances defined on the drawings. Inspection of these items does not preclude

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 9 inspection of other components as required to ensure conformance. A certificate of dimensional control shall be provided, as indicated in Table 2.

Part Number Name Inspection

F10128892 CAVITY TO CAVITY BELLOWS WLDMT Check relative clock between flanges

F10128914 CAVITY TO SOLENOID BELLOWS WLDMT Check relative clock between flanges

F10128926 CAVITY TO BPM BELLOWS WLDMT Check relative clock between flanges

F10134013 FLG EXT, CAVITY TO SOL BLWS WLDMT CMM

F10134732

FLANGE, NON ROT, DIAMOND SEAL,

SLOTTED

CMM

F10142208 FLANGE, BP END WLDMT CMM

F10162038 FLG EXT, CAVITY TO BPM BLWS WLDMT CMM

F10170065

TUBE, LONG BELLOWS SUPPORT

Visual inspection of clear anodization according to drawing

F10188422 SSR1 CAVITY TO SOLENOID BELLOWS WLDMT Check relative clock between flanges

F10188426

FLG EXT, SSR1 CAVITY TO SOLENOID

BELLOWS

CMM

F10188800 WLDMT, SSR1 BEAM LINE END FL CMM

F10205750 BELLOWS EXT, SSR1 BEAMLINE END FL CMM

F10205776 FLG EXT, SSR CAV TO CAV/BPM BELLOWS CMM

F10230579 SSR BEAMPIPE TUBE SOLID CMM

F10230773 FLANGE, SSR2 BL END CMM

F10233840 WLDMT, SSR1 BL END EXT Check flange clock

F10205745 WLDMT, BELLOWS SQUIRM PROTECTOR

Visual inspection of clear anodization according to drawing

Table 3. Components requiring specific inspections

3.6 Leak testing

Leak test of all the welded assemblies shall be conducted with a calibrated Helium Mass

Spectrometer Leak Detector (HMSLD), according to ISO 20485 or equivalent standard. Vacuum leak level requirements for each assembly are specified in the notes of the drawings. Documentation of the leak test shall be provided as part of the final documentation, as indicated in Table 2.Table

2: Hold Points and Documentation Deliverables for Fabrication Phase.

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 10

The Manufacturer should communicate to FFDG the extension to which they are able to perform this procedure, along with any eventual deviation from it. FFDG should provide approval for any deviation from this procedure.

3.7 Serial number stamping

Manufacturer shall permanently etch onto each component the serial number. The etching shall take place on the exterior surface of the beamline tube, and it shall be oriented longitudinally with respect to the tube axis. The Manufacturer shall present details of the serial-number etching process at the MRR and subsequently provide a picture of the first article’s serial number.

The serial number shall include the revision of the component being manufactured, as reported on the drawing, as well as the numbering of the component being manufactured, and the cryomodule where the component will be installed. Table 4 provides details on the serialization scheme.

Part #, Rev Manufacturing Order Serial Number

F10128892 G 01 F10128892 G 01

F10128892 G 14 F10128892 G 14

F10128914 G 01 F10128892 G 01

F10128914 G 14 F10128892 G 14

F10255454 – 01 F10255454 – 01

Table 4: Serialization Scheme Examples

Figure 1 shows an example of the serial number location etched onto the exterior surface of the tube.

Document Title:

PIP-II SSR2 Cryomodule - Procurement and Fabrication Specification – SSR2 PROD EDGE-

Fermi National Accelerator Laboratory 11

Figure 1: Serial number shall be etched on the exterior surface of the tube

3.8 Cleaning Procedure

All components shall be handled with nitrile gloves. The cleaning procedure described in this paragraph shall be performed onto each bellows subassembly listed in Table 1.

1. DI water rinse.

2. 99.9% pure Isopropyl alcohol rinse.

3. Use a solution of ultrapure water (UPW) and detergents* in the ultrasonic cleaner for at least

30 minutes.

4. Use UPW in the ultrasonic cleaner for at least 30 minutes.

5. Rinse thoroughly with running UPW after the ultrasonic cleaning.

6. Dry blow using particle free N2.

*Liquinox liquid detergent is suggested. Other liquid detergent, which are proven to be compatible, can alternatively be used with FFDG approval.

The cleaning procedure shall be performed after machining and before welding of the single parts in the final assembly. The Manufacturer should communicate to FFDG to which extent they are able to perform this procedure. Any eventual deviation from it shall be approved by FFDG in advance.

3.9 Quality controls

The Manufacturer shall prepare a project-specific Manufacturing and Inspection Plan (MIP) for

FFDG’s approval. FFDG can provide a template for the MIP if the Manufacturer prefers. The MIP shall list the sequence of manufacturing steps including in-process examinations, as well as the associated inspections as described in this document.

F10191245 A 01

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The Manufacturer shall develop quality control procedures and tests to guarantee that the project will be in full conformance with the FFDG’s specifications. If during inspections a discrepancy occurs, the supplier shall generate a Discrepancy Report (DR) and obtain FFDG’s approval before proceeding to the subsequent step.

The Manufacturer shall maintain records of all inspections and tests in the form of Quality Reports

(i.e., electronic travelers).

The Manufacturer shall provide documentation detailing the weld assurance program. Welding documentation shall be developed in accordance with related pressure vessel codes of 2021 ASME

B&PV section VIII, Division I, and ASME B&PV section IX.

The MIP and Welding Documentation shall be made available for FFDG’s reviews and approval by the Manufacturing Readiness Review (MRR), as also indicated in Table 2.

3.10 Incoming Inspection at Fermilab

3.10.1 Incoming QC activities

FFDG reserves the right to perform additional QC inspections on the delivered bellows subassemblies. Incoming QC activities will include the following:

1. Visual inspection.

2. Dimensional inspection.

3. Relative Magnetic Permeability shall be less than 1.02 (as specified in the notes of referenced drawings).

4. Leak check and RGA scanning as in 3.6 and 3.10.2 respectively.

5. Cold shock as in 3.10.3.

Acceptance of the final product will be granted by FFDG only after verification of the requirements listed in this chapter and approval of documentation listed in Table 2, which will occur within a reasonable timeframe.

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3.10.2 RGA scan

The following procedure shall be performed after leak check, wherein a Residual Gas

Analyzer (RGA) shall be used to sample the gas coming out of the bellows subassembly to ensure that no contaminant is present. When the pressure is less than 1·10-6 mbar, the ratio between the sum of partial pressures from atomic mass unit (amu) 45 to 100 and the total pressure should be less than 1/300.

Also, an RGA spectrum taken after at least one hour from the moment when the pressure is below 1·10-6 mbar shall be recorded. The RGA spectrum should show masses in the range 0-100 AMU.

3.10.3 Cold Shock

The following procedure shall be performed to conduct a cold shock test on individual bellows weldments:

1. Immersion in liquid nitrogen (70-80 K) for 10 minutes.

2. Remove the component from the liquid nitrogen bath.

3. Wait until ambient temperature is reached.

4. Repeat points 2 and 3 three times.

5. Leak test according to ISO 20485.

3.11 Packaging

All the components shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulation pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. Each component shall be individually double-bagged and wrapped in low density polyethylene bags. All sealing surfaces should be sufficiently protected to ensure they are not damaged during transportation.

Wooden or plastic containers that prevent impact damage and bending shall be used. Sharp fasteners that penetrate the container, such as nails or screws, shall be avoided, and in any event, provisions shall be made that inadvertent penetration of points cannot come into contact with the components. Banding shall be applied in such a way that the bands must be removed if the container is opened. A marking shall be applied to the bands that identifies the manufacturer or manufacturer’s shipping agent, to indicate if the bands may have been replaced (e.g. as a result of customs inspection).

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All deliverables including documentation shall be catalogued and offered for acceptance to FFDG by the Shipping Readiness Review, before shipping the completed units.

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4 Appendix

4.1 List of Drawings

Top-Level Drawings Associated Drawings

F10128892 - CAVITY TO CAVITY BELLOWS WLDMT F10128880

F10134732

F10205746

F10205776

F10205923

F10205924

F10128914 - CAVITY TO SOLENOID BELLOWS WLDMT

F10132367

F10134013

F10134732

F10170065

F10191245

F10128926 - CAVITY TO BPM BELLOWS WLDMT F10132367

F10134732

F10162038

F10170065

F10191226

F10188422 - SSR1 CAVITY TO SOLENOID BELLOWS WLDMT F10134732

F10188426

F10205726

F10205745

F10205746

F10205766

F10255512 - KIT, SSR2 PROD BEAMLINE DS END-FLG F10134732

F10142208

F10188800

F10205726

F10205750

F10205756

F10230579

F10230773

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F10233840

F10255513

F10255454 - KIT, SSR2 PROD BEAMLINE US END-FLG F10134732

F10142208

F10163126

F10188800

F10205726

F10205750

F10205756

F10230579

F10230773

F10233840