B.1 Enclosure A Draft Contract.pdf
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- Attached to
- INSPIRE Spectrometer Vertical Focusing Mirror
- Solicitation number
- 463915
- Issued by
-
Department of Energy Office of Science
About this file
This document is a draft contract for the procurement of a Spectrometer Vertical Focusing Mirror for the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory. The contract, with number 463915, is a firm-fixed price agreement where the contractor will be responsible for purchasing materials, manufacturing, testing, and delivering a custom vertical focusing mirror (VFM) for the IOS beamline. The mirror is a complex optical component with specific technical requirements, including a custom diaboloid surface geometry, precise surface roughness specifications, and a gold coating with a chromium adhesion layer.
Key deliverables include a Manufacturing/Inspection/Test Plan, Acceptance Test Procedure, Factory Acceptance Test Report, and the final mirror delivery, with most initial documents due within two weeks of contract award. The contract specifies detailed technical specifications for the mirror, such as a 2-degree grazing incidence angle, specific focus distances, and stringent surface figure and roughness tolerances. The total contract period is expected to be 18 months from substrate receipt, with the mirror to be delivered to Brookhaven National Laboratory. The contract is administered by Brookhaven Science Associates (BSA) under a Prime Contract with the United States Department of Energy.
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Other files
| File | Type | Posted |
|---|---|---|
| B.1c RFQ Amendment 001.pdf | ||
| B.1 Enclosure E. Form W9.pdf | ||
| B.1 Enclosure C. AMS-Form-043.docx | DOCX document | |
| B.1 Enclosure F. Form W-8.pdf | ||
| B.1 Request for Quote.pdf | ||
| B.1 Enclosure B. AMS-Form-050.pdf | ||
| B.1 Enclosure D. Vendor ACH Authorization Form.pdf |
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Text version
April 9, 2025 1 Rev. 10
BSA’s Contractual Representative
Overall Value Amount
Contract Type Contract Number
Jayce M. Blood TBD Firm-fixed price 463915
BROOKHAVEN NATIONAL LABORATORY
Brookhaven Science Associates
P.O. Box 5000
UPTON, L.I., N.Y. 11973-5000
Name and Address of Contractor
CONTRACT
This Contract (the “Contract”) is between the party named above (the “Contractor”), and Brookhaven Science Associates, LLC (“BSA”), the latter acting under a Prime Contract, DE- SC0012704, with the United States of America (the “Government”) represented by the United States Department of Energy (“DOE”).
I. SCOPE OF WORK
The Contractor shall be responsible for the purchase of all materials, manufacturing, testing, and delivery of a Spectrometer Vertical Focusing Mirror.
All work shall be conducted in strict accordance with the attached BSA Statement of Work No. NSLSII-23ID2-SOW-SPC-003, Version 1, dated April 16, 2025, Drawing No. PD- IOS-MIR-0005, Revision A, dated April 2025, and Design and Fabrication of Components No. LT-ENG-RSI-SR-VA-002, Revision A, dated December 18, 2008.
A. Reports/Deliverables: The Contractor shall provide the following deliverable(s) to BSA’s Technical Representative (Tech Rep):
Item Description Due Date
1 Manufacturing/ Inspection/Test Plan
2 weeks after award of contract
2 Acceptance Test Procedure
2 weeks after award of contract
Factory Acceptance Test Report and Test Certificates
17 months after receipt of substrates
Delivery of Spectrometer Vertical Focusing Mirror
18 months after receipt of substrates
5 End Item Documentation Package In accordance with the SOW
April 9, 2025 2 Rev. 10
II. PERIOD OF PERFORMANCE
This Contract shall be effective as of the date executed by both parties. It shall remain in effect through TBD.
III. FIRM FIXED PRICE AND PAYMENT
A. Firm Fixed Price: In full consideration of the Contractor's performance hereunder, BSA shall pay the Contractor the firm fixed price of TBD U.S. Dollars ($0.00). The said sum shall constitute full compensation for all services and materials furnished hereunder.
B. Payment: Payment will be made upon receipt and approval of properly certified invoices. Payment will be in accordance with the following milestone payment schedule:
Item Milestone Amount Cumulative
Amount
Receipt and Approval by BSA of the Manufacturing/ Inspection/Test Plan
Receipt and Approval by BSA of the Acceptance Test Procedure
Receipt and Approval by BSA of the Factory Acceptance Test Report and Test Certificates
Receipt and acceptance of the Spectrometer Vertical Focusing Mirror
5 BSA Receipt and Approval of the End Item Documentation Package
Total:
Payment terms are Net (for large businesses 30, for small businesses 10).
Invoices shall be directed to BSA’s Accounts Payable Department via electronic or regular mail.
Electronic invoice submittal is preferred by BSA. The Contractor shall make every effort to have systems in place that allow for electronic invoice transmittal.
Invoices shall be submitted in PDF format, via email, to apinvoices@bnl.gov.
Hard copy invoices, if applicable, shall be directed to BSA's Accounts Payable Department, Contracts Division, Bldg. No. 400D.
The Contractor shall indicate the final invoice by clearly marking such invoice as mailto:apinvoices@bnl.gov
April 9, 2025 3 Rev. 10
“FINAL.” A copy of the final invoice must be submitted to BSA’s Contractual Representative.
C. Freight: Freight terms shall be (for North American shipments) FOB Destination
BSA National Laboratory, 98 Rochester Street, Upton, Long Island, New York.
Freight Prepaid, (for foreign shipments) “DAP” Delivered At Place, BSA National Laboratory, 98 Rochester Street, Upton, Long Island, New York.
D. Labelling, Packing, and Notification Requirements:
More detailed instructions are available at https://www.bnl.gov/shipping/ or by emailing WarehouseOperations@bnl.gov.
Labeling Requirements
All shipments must comply with the following labelling requirements. Failure to do so may result in delayed payments. Labels must be placed on the upper left portion of the container when possible and contain:
Brookhaven National Laboratory Brookhaven’s Contract Number 98 Rochester St.
Upton, NY 11973 Box Number / Number of Boxes
Packing List Requirements
Every shipping container must include a packing list. The packing list must be clearly identified and affixed to a side of the shipping container. At a minimum, the packing list should contain the following information:
• Ship from company name and address
• Supplier contact name
• Supplier telephone number
• Ship to address as instructed by Buyer/Contracts Specialist
• Brookhaven’s Contract number
• Part number, description, quantity, unit of measure, and corresponding BNL
Contract line number
Special Notification of Delivery
If a shipment is heavier than 3,000 lbs., longer than 8 feet in any direction, or has a high center of gravity, it will require rigging upon receipt and the shipper shall provide a minimum of 3 days’ advance notice of delivery to BNL’s Receiving Department via email to WarehouseOperations@bnl.gov. The shipper must obtain acknowledgement from BNL that delivery notification was received. Failure to contact BNL will result in delays during delivery and any resulting demurrage https://www.bnl.gov/shipping/ mailto:WarehouseOperations@bnl.gov
April 9, 2025 4 Rev. 10 will be at the shipper’s expense.
Marking of Outer Package
Each shipping container (transport package) with a gross weight equal to or greater than 400 lbs. (180 kilograms) must be marked with the center of gravity location and gross weight on at least one side or end panel. It must also meet the requirements of the latest revision of ASTM Standard D 3951, Standard Practice for Commercial Packaging. This applies to any item shipped (originally packaged or repackaged) to BNL or other locations cited in the Contract.
Protection of Material and Equipment
The Contractor shall employ procedures which ensure adequate protection of material and equipment during shipment and while in storage. Such protection shall include special environmental packaging as necessary. All items shipped (originally packaged or repackaged) to BNL or other locations cited in the PO or Contract shall comply with the requirements for preservation, packaging, and marking as stated in the latest revision of ASTM Standard D 3951-10, Standard Practice for Commercial Packaging.
Unacceptable Packing Material
Do not use vermiculite as a packaging material inside any shipments to BNL unless required by shipping regulation. “Vermiculite” as defined in this specification means the hydrous, silicate mineral classified as a phyllosilicate that has been expanded by heating. Vermiculite used as a packaging material in shipments must be determined to be free of asbestos (<1% chrysolite, amosite, crocidolite, tremolite, anthophyllite, and actinolite). All shipments containing vermiculite must be accompanied by documentation stating that the vermiculite used is certified asbestos-free. This documentation must be affixed to the outside of the package.
Ocean Shipments
Foreign shipments transported via ocean freight must use the 10+2 REQUIREMENTS Form (PDF). The form must be completed by the Contractor 72 hours before departure of the vessel. Send form to the following:
Interfreight Harmonized Logistics, Inc.
Fax: 516-371-6880 bnl@interfreight.net
Brookhaven National Laboratory WarehouseOperations@bnl.gov https://www.astm.org/Standards/D3951.htm https://www.astm.org/Standards/D3951.htm https://www.bnl.gov/shipping/files/pdf/10-2-security-filing-bnl-interfreight.pdf https://www.bnl.gov/shipping/files/pdf/10-2-security-filing-bnl-interfreight.pdf mailto:bnl@interfreight.net
April 9, 2025 5 Rev. 10
Once the form is submitted to customs, an acceptance number will be provided.
Freight will not be loaded onto a vessel without an acceptance number. Failure to submit the 10+2 form may result in fines. It is the Contractor's responsibility to make sure the 10+2 form is submitted 72 hours prior to the vessel sailing. BSA shall withhold payment from the Contractor's final invoice for any penalties incurred by BSA due to late or incorrect ISF filing by the Contractor.
IV. AUTHORIZED REPRESENTATIVES
A. BSA’s Technical Representative: TBD, telephone no. TBD, TBD (email), is BSA's Technical Representative, and shall act as liaison between BSA and the Contractor in technical matters only.
B. BSA’s Contractual Representative: Jayce Blood, telephone no. (631)344-2627, jblood@bnl.gov (email), is BSA's Contractual Representative. Any change or modification in the terms and conditions of this Contract shall require the written approval of BSA's Contractual Representative or designee.
C. Contractor’s Technical Representative: TBD, telephone no. TBD, TBD
(email), is the Contractor’s authorized Technical Representative, and shall act as point of contact between BSA and the Contractor in technical matters only.
D. Contractor’s Contractual Representative: TBD, telephone no. TBD, TBD
(email), is the Contractor’s authorized Contractual Representative and shall act as liaison between BSA and the Contractor.
V. PATENT CERTIFICATION RESERVED
VI. GOVERNMENT PROPERTY RESERVED
VII. ADDITIONAL TERMS
The provisions of Brookhaven Science Associates, LLC, General Terms and Conditions for Non-Commercial Items, Rev 23.0 May 2025, are incorporated herein and made a part hereof.
Article 22 entitled “Warranty” is modified to reflect a two (2) year warranty. The contractor shall warranty the equipment against failure and defects for a period of two (2) years from delivery and final acceptance at BNL.
This Contract is issued pursuant to Brookhaven Science Associates General and/or Supplemental Terms and Conditions listed above, which are incorporated herein by reference. The complete text of these terms and conditions can be viewed at PPM | Terms and Conditions. Should the Contractor have any questions and/or not have access to these terms and conditions, contact the Buyer or Contracts Specialist immediately.
The following documents attached hereto and made a part hereof, contain additional provisions of this Contract:
mailto:jblood@bnl.gov https://www.bnl.gov/ppm/terms-and-conditions.php https://www.bnl.gov/ppm/terms-and-conditions.php
April 9, 2025 6 Rev. 10
Attachment A Statement of Work No. NSLSII-23ID2-SOW-SPC-003, Version 1, dated
April 16, 2025 Attachment B Drawing No. PD-IOS-MIR-0005, Revision A, dated April 2025 Attachment C Design and Fabrication of Components No. LT-ENG-RSI-SR-VA-002, Revision A, dated December 18, 2008 Attachment D BNL Supplier Quality Assurance Requirements (BNL-QA-101)
This Contract does not bind nor purport to bind the Government of the United States.
ACCEPTED:
CONTRACTOR – TBD BROOKHAVEN SCIENCE
ASSOCIATES, LLC.
By: By:
Name: Name:
Title: Title:
Date: Date:
Should you accept this Contract without exception or alteration, a copy of the Contract shall be returned to BSA's Contractual Representative. Should you take any exceptions or attempt to alter the Contract in any manner, BSA’s execution thereof shall be null and void. Should you wish to take exception(s)/alteration(s), you shall notify BSA’s Contractual Representative. BSA will consider the requested exception(s)/alteration(s) and notify you accordingly. No Contract shall exist unless and until such differences are resolved.
Brookhaven National Laboratory Number: NSLSII-23ID2-SOW-SPC-003
Brookhaven Science Associates Version: 1
National Synchrotron Light Source II (NSLS-II) Effective: 16APR2025
23-ID-2 (IOS) INSPIRE Spectrometer Vertical Focusing Mirror Statement of Work and Technical Specification
QA Category: A-2
Document Reviewed and Approved By:
Prepared by Approval Joseph Dvorak NSLS-II Optical Design Scientist
ESH Approval Robert Lee NSLS-II ESH Manager
Approved By Ira Waluyo NSLS-II IOS Lead Beamline Scientist
Approved By Paul Zschack PSROD Director, Spectroscopy Interim Program Manager
Approved By Steve Moss NSLS-II Authorization Basis Manager
Approved By Lindsay Garske NSLS-II Quality Assurance Engineer
Approved By Stephen Sherwood NSLS-II Liaison Engineer
Reviewers (Listed in SharePoint Properties. Will not be approving through SharePoint workflow.)
Reviewed By Adrian Hunt IOS Beamline Scientist
Reviewed By Mourad Idir NSLS-II Optics and Metrology Group Leader
Reviewed By Lacy Jones NSLS-II Operations Engineer
This information is controlled by the U.S. Department of Commerce Export Administration Regulations 15 CFR Parts 730-774 as EAR99 Technology.
ii National Synchrotron Light Source II
Version 1 ii Brookhaven National Laboratory
VERSION HISTORY LOG
VERSION DESCRIPTION DATE AUTHOR
1 First Issue 16APR2025 J. Dvorak
NSLSII-23ID2-SOW-SPC-003: 23-ID-2 (IOS) INSPIRE Spectrometer Vertical Focusing Mirror Statement of Work and Technical Specification
NSLS-II iii 16APR2025
Contents 1 Introduction and Overview
1.1 Background
1.2 Scope
2 References 3 Requirements
3.1 Contractor Responsibilities and Manufacturing Requirements
3.1.1 Technical Performance
3.1.2 Acceptance Test Procedure
3.1.3 Factory Acceptance Testing
3.2 Management
3.2.1 Manufacturing/Inspection/Test Plan
3.2.2 Progress Teleconference
3.2.3 Performance Reporting
3.3 Documentation and Data Management
3.3.1 General Documentation Requirements
3.3.2 End Item Documentation
3.4 Configuration Management
3.5 Warranty
3.6 Packaging
4 Quality Assurance
4.1 Quality Assurance Requirements
4.2 Material Review Board (MRB) Authority
4.3 QA Flow-Down
5 Schedule/milestones 6 Deliverables 7 Value Engineering 8 Technical Specifications
8.1 Definitions of Optical Parameters
8.2 Scope of Supply
8.3 Substrate Specifications
8.4 Mirror Optical Surface Specifications
8.5 Testing Requirements
iv National Synchrotron Light Source II
Version 1 iv Brookhaven National Laboratory
ACRONYMS:
ATP Acceptance Test Procedure BNL Brookhaven National Laboratory BSA Brookhaven Science Associates ESH Environment, Safety, and Health FAT Factory Acceptance Test GeV Giga Electron Volts INSPIRE Inelastic Scattering, Photoemission and
Infrared Endstation IOS In situ and Operando Soft X-ray Spectroscopy
MRB Material Review Board NSLS-II National Synchrotron Light Source II QA Quality Assurance RMS Root Mean Square SOW Statement of Work SPC Technical Specification UHV Ultra-High Vacuum VFM Vertical Focusing Mirror
Brookhaven National Laboratory Number: NSLSII-23ID2-SOW-SPC-003
Brookhaven Science Associates Version: 1
National Synchrotron Light Source II (NSLS-II) Effective: 16APR2025
NSLS-II 1 16APR2025
1 INTRODUCTION AND OVERVIEW
1.1 Background
NSLS-II is a synchrotron light source that has a highly optimized 3 GeV electron storage ring, full-energy injector, experimental beamlines and optics, and appropriate support equipment. The INSPIRE Spectrometer Vertical Focusing Mirror (VFM) for the IOS beamline described in this document will be hereafter referred to as “the Equipment”. The specifications are for a single custom mirror, commonly referred to in the literature as a ‘diaboloid’, for a new energy loss spectrometer for the IOS beamline.
1.2 Scope
This Statement of Work (SOW) and Technical Specification (SPC), hereinafter called “the SOW/SPC”, is the basis for the procurement of the Equipment, which will be used on the IOS beamline at National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory (BNL). This SOW/SPC outlines the Contractor’s responsibilities and obligations necessary for completing the requirements as set forth herein.
2 REFERENCES
The following documents are an integral part of this SOW/SPC; the applicable revision level will be the latest that is in effect at the time of award:
Document Number Document Title
LT-ENG-RSI-SR-VA-002 Requirements for Design and Fabrication of Components for NSLS-II UHV Systems BNL-QA-101 BNL Supplier Quality Assurance Requirements MIL-PRF-13830B Performance Specification, Optical Components for Fire Control Instruments PD-IOS-MIR-0005 INSPIRE Spectrometer Vertical Focusing Mirror Drawing
3 REQUIREMENTS
In accordance with the applicable specifications, referenced documents, and instructions as defined in this SOW/SPC, the Contractor shall be responsible for the purchase of all materials, manufacturing, testing, and delivery of the Equipment.
3.1 Contractor Responsibilities and Manufacturing Requirements
3.1.1 Technical Performance
In accordance with the SOW/SPC document and all referenced documents, the Contractor shall manufacture the Equipment. The Contractor shall test the Equipment at the Contractor’s facility, then deliver the Equipment to BNL. It is the Contractor’s responsibility to ensure that the Equipment complies with all requirements in the SOW/SPC.
National Synchrotron Light Source II
Version 1 2 Brookhaven National Laboratory
3.1.2 Acceptance Test Procedure
The Contractor shall provide an ATP that is in accordance with this SOW/SPC and all reference documents noted herein. The ATP must be reviewed and approved by BSA prior to use. The Contractor shall submit an ATP to BSA for approval describing each test or measurement to be implemented. Drawings and equipment required for adequate inspection and test shall be listed in the ATP.
The ATP shall ensure that all test requirements as defined in the SOW/SPC are achieved.
3.1.3 Factory Acceptance Testing
The Equipment shall be tested by the Contractor at the Contractor’s facility, the Contractor’s subcontractor’s facility, or a pre-approved BSA facility prior to shipment, in accordance with the ATP.
BSA reserves the right to perform in-process inspections at the Contractor’s facility. The Contractor shall notify BSA a minimum of 30 working days prior to the start of final inspection and testing. The BSA inspection shall in no way relieve the Contractor of responsibility for ensuring the quality of the mirrors.
The Contractor shall maintain documentation for all metrology and processes during fabrication and characterization of the Equipment. The responsibility for performing and documenting all specified tests and metrology shall rest with the Contractor unless noted otherwise.
The Contractor shall submit the Factory Acceptance Test Report of metrology results and associated raw data to BSA for review and approval by BSA in writing prior to shipment of the equipment. The Acceptance Test Report shall include machine-readable raw data sets for all metrology performed. Data sets shall be in plain ASCII text, or another widely used format of mutual agreement. The Contractor shall describe the file formats and supply necessary constants and parameters to permit independent data analysis of the raw data. If possible, a full map of the clear aperture shall be provided.
3.2 Management
3.2.1 Manufacturing/Inspection/Test Plan
Within two (2) weeks after award of contract, the Contractor shall deliver a Manufacturing/Inspection/Test plan that includes a milestone schedule defining the design validation, manufacturing, and testing in sufficient detail to allow regularly scheduled progress monitoring. The manufacturing plan shall identify the manufacturing processes required to complete all efforts identified in this SOW/SPC. The Contractor shall supply a Gantt chart indicating the estimated time and duration to achieve major milestones in the mirror fabrication, e.g. procuring material, polishing, metrology, final inspection, acceptance test date and delivery.
The chart shall be submitted electronically using Microsoft project or excel. The plan shall be submitted for review and be approved in writing by BSA.
3.2.2 Progress Teleconference
Within two (2) weeks after award of contract, monthly technical and progress teleconferences and/or meetings between the Contractor and BSA shall be held at a mutually scheduled time. The discussions shall include the Contractor’s progress, technical and contractual questions, analyses, value engineering, troubleshooting, material status, resources, and manufacturing issues.
NSLSII-23ID2-SOW-SPC-003: 23-ID-2 (IOS) INSPIRE Spectrometer Vertical Focusing Mirror Statement of Work and Technical Specification
NSLS-II 3 16APR2025
3.2.3 Performance Reporting
Throughout the life of the contract, the Contractor shall supply a written report by the fifth of every month to the BSA technical representative and contractual representative that clearly details progress through the prior month with respect to the Manufacturing/Inspection/Test plan. This shall include milestone charts, detailed progress, open items, problems, recommended solutions, and risk mitigation.
3.3 Documentation and Data Management
3.3.1 General Documentation Requirements
All documentation provided by the Contractor shall be in English.
The Contractor shall provide an electronic copy (in Microsoft Office format with formal controlled copies in PDF format) of all documentation identified in this SOW/SPC, unless otherwise noted.
3.3.2 End Item Documentation
The Contractor shall provide the End Item documentation package in accordance with the schedule set forth in this SOW/SPC. The End Item documentation package for the Equipment shall consist of the following documentation:
Completed travelers
Manufacturing/Inspection/Test data for inspections performed at incoming inspection and during manufacture and for the final manufactured mirror
Material certification for the mirror coating, including material purity
3.4 Configuration Management
The Contractor shall establish and maintain a configuration control system to assure that all End Items are of the proper configuration, and that all approved configuration changes are incorporated at the specified effectivity points. Records verifying the configuration of each item shall be maintained for a minimum of five (5) years from the date of acceptance of the Equipment by BSA.
3.5 Warranty
The Contractor shall provide a warranty for the Equipment, against failure and defects for a period of two
(2) years from final acceptance at BNL.
3.6 Packaging
3.6.1 The Contractor shall be responsible for design and fabrication of the mirror shipping container(s).
3.6.2 The Equipment will be used in an ultra-high vacuum (UHV) environment and shall be UHV clean. The specifications for vacuum compliance are in BSA document LT-ENG-RSI-SR-VA- 002, Design and Fabrication of Components for NSLS-II UHV Systems.
3.6.3 Talcum powder-free, clean room gloves shall always be used when handling the Equipment.
3.6.4 Oil, fingerprints, dust, and other contaminants shall be kept off the Equipment.
3.6.5 In preparation for shipping, the Equipment shall be sealed for protection against weather elements, dust, and damage to projections, shock loads, impacts, and rubbing. The Equipment shall be properly braced and cushioned within its own packing so that it will not shift during handling and shipment. A dust-free interior-most enclosure shall be used. Hermetically sealed packaging shall be used during shipping to protect the Equipment from dust and contamination.
Version 1 4 Brookhaven National Laboratory
3.6.6 Durable materials, such as clean wood, bubble wrap, or similar non-contaminating materials, are to be used to support and protect the components from one another during transit and storage.
Peanut-type material shall not be used for packaging.
3.6.7 Each packing shall be fitted with ShockWatch and TiltWatch sensors or an equivalent approved by BSA.
3.6.8 The container shall be appropriately labeled with the listing of contents, destination, gross weight, location of center of gravity, purchase order number, and contact information.
4 QUALITY ASSURANCE
The Contractor shall maintain and apply an effective QA program for the design, manufacture, and testing of all systems and equipment provided. The system shall comply with the requirements of the ISO-9001 Standard, Quality Management System Requirements. The Contractor shall supply the necessary documentation to demonstrate compliance. Pre-award and post-award surveys may be required and shall be supported.
4.1 Quality Assurance Requirements
As set forth in BSA Form BNL-QA-101, Brookhaven National Laboratory Supplier Quality Assurance Requirements, as amended herein, forms a part of this statement of work. Specifically, this includes the following sections: 1.0, 2.0, 3.0, 3.1, 3.1.2, 3.2 to 3.22, 4.0, 4.1, 4.2, 4.3, 4.4 as modified below, 4.4.1, 4.4.2, 4.4.3, 4.6 as modified below 4.7, 4.7.1, 4.7.3, 4.10, 4.10.1, 4.10.3, 4.11, 4.12, 4.13, 4.16, 4.19, 4.21, and
4.39. With each Component delivered, the Contractor shall supply to BSA a Certificate of Conformance, in accordance with section 4.16 of BNL-QA-101.
Clause 4.4: Manufacturing/Inspection/Test Plan, is modified as follows: 2 weeks after award the supplier shall submit for the Buyer’s approval a Manufacturing/Inspection/Test Plan for the item(s) to be produced.
Clause 4.6: Test and Inspection Procedure, is modified as follows: 2 weeks after award the supplier shall submit for Buyer’s approval the Test and Inspection Procedure for the item(s) to be produced.
4.2 Material Review Board (MRB) Authority
Unless, and until, Material Review Board (MRB) authority has been requested and received, the Contractor shall be restricted to dispositions of rework, scrap, and return-to-vendor; i.e., the Contractor shall not use nonconforming materials via unique or standard repair processes, nor via use-as-is-dispositions.
The Contractor shall not delegate MRB authority to suppliers without the prior knowledge and written approval of BSA.
BSA may delegate MRB Authority to the Contractor, when requested by the Contractor. Such request shall be accompanied by:
1. The Contractor’s procedure for the identification, evaluation, disposition, and control of non-conformances
2. The resumes of personnel to be assigned as MRB members
All non-conformances requiring MRB action shall be documented and sent to the BSA technical representative within five (5) working days of the decision.
4.3 QA Flow-Down
The Contractor shall ensure a proper and complete flow-down of all applicable QA requirements, as described in section 4.1 herein, to its suppliers and sub-tier suppliers.
NSLSII-23ID2-SOW-SPC-003: 23-ID-2 (IOS) INSPIRE Spectrometer Vertical Focusing Mirror Statement of Work and Technical Specification
NSLS-II 5 16APR2025
5 SCHEDULE/MILESTONES
The following schedule is for planning purposes only. Schedule requirements as set forth in the contract will take precedence.
SCHEDULE IN MONTHS AFTER AWARD OF CONTRACT
Receipt of Equipment at BNL 12
6 DELIVERABLES
The Contractor shall supply the following:
Item Deliverable Due Approval Required
1 Manufacturing/Inspection/Test Plan 2 weeks after award of contract Yes 2 Technical & Progress Teleconference 2 weeks after award/every month thereafter No 3 Performance Reports 5th of each month Yes 4 Acceptance Test Procedure 2 weeks after award of contract Yes 5 Delivery of Factory Acceptance Test Report and test certificates 7 days after completion of FAT and prior to shipment of equipment to BNL
Yes
6 Delivery of Equipment at BNL As set forth in contract Yes 7 End Item documentation package With the Equipment delivery Yes
7 VALUE ENGINEERING
The Contractor is encouraged to make recommendations for changes that might lead to an improvement in performance, reliability, quality, safety, or reduction in cost. Simplicity in operation, ease of maintenance, and an improvement in the performance and reliability of the specific functions, beyond the requirements of this specification, are objectives which shall be considered in the production of each component type. Where it appears a substantial improvement in simplicity of design, performance, ease of maintenance or reliability will result from the use of materials, parts, and processes other than those specified, it is desirable that their use be investigated.
When investigations point to advantages that may be realized, the recommendation for change shall be presented to BSA for review and, if approved, authorized in writing.
Version 1 6 Brookhaven National Laboratory
8 TECHNICAL SPECIFICATIONS
A pictorial definition of relevant terminology is given in Figure 1.
Figure 1- Pictorial definition of terminology. Note that this schematic is not meant to imply a given deflection direction or optical figure.
8.1 Definitions of Optical Parameters
8.1.1 Deviations from the theoretical or ideal profile of an optical surface can be designated as roughness or figure error according to the length scale.
8.1.2 Figure errors: Figure error (also termed height error) is defined as the difference between the specified three-dimensional surface figure and the actual surface figure under operational conditions (e.g. mounted and in the correct deflecting geometry, etc.).
• The slope error is defined as the value of the gradient of the shape error along a specified direction and over a specified region of the optical surface.
• The RMS slope error is defined as the RMS deviation from the nominally defined figure for spatial wavelengths ranging from 1 mm to the length of the clear aperture.
8.1.3 Surface roughness: Surface roughness is defined as the root mean square (RMS) of the surface amplitudes with spatial wavelengths between 1 μm and 1 mm.
• The 2-dimensional surface micro-roughness shall be measured, using a suitable instrument, at a representative grid of points across the length and width of each optic.
NSLSII-23ID2-SOW-SPC-003: 23-ID-2 (IOS) INSPIRE Spectrometer Vertical Focusing Mirror Statement of Work and Technical Specification
NSLS-II 7 16APR2025
• The precise position of each measurement location shall not be chosen to minimize micro-roughness or surface defects.
8.1.4 Optical figure (shape) parameters: The definitions of the parameters used to describe the ideal optical figure of the surface are shown in Figure 2.
Figure 2 - Schematic of the optical parameters for the vertical focusing mirror. p is the distance from the source to the mirror pole. qt is the distance from the mirror pole to the tangential line focus. qs is the distance from the mirror pole to the sagittal line focus. θ is the grazing angle of incidence at the mirror pole. The mirror pole is taken to be at the center of the mirror’s optical clear aperture.
8.2 Scope of Supply
The scope of supply shall include:
• Design, fabrication and testing of the VFM mirror according to the specifications given below.
• Test polishing coupons set.
8.3 Substrate Specifications
8.3.1 The substrates shall be fabricated with features, dimensions, and tolerances specified in drawing PD-
IOS-MIR-0005.
• The manufacturer shall determine the necessary margin surrounding the optical clear aperture, and the final substrate dimensions shall be approved by BSA in writing.
8.3.2 The mirror substrate material shall be single-crystal silicon or high purity fused silica glass.
• If single-crystal silicon, the resistivity shall be < 20 ohm-cm with the <100> direction oriented along the length of the mirror and the (100) plane parallel to the optical surface, as defined in Figure 1.
• The substrate shall additionally be free from defects such as dislocations, cracks, etc.
8.3.3 The mirror optical surface shall have no striae under visible examination.
Version 1 8 Brookhaven National Laboratory
• The mirror optical surface shall meet a scratch/dig requirement of 10/5 per MIL-PRF-13830B.
8.3.4 The mirror non-optical surface areas shall be finished using a controlled grinding process followed by wet-chemical etching to remove residual sub-surface damage and leave the non-optical surface areas in a stress-free condition.
• Substrate dimensions apply to the substrate following the wet-chemical etching.
8.3.5 Workmanship shall be consistent with the quality necessary for stable operation of sensitive optical devices under long-term exposure to an X-ray, ultrahigh vacuum (UHV) environment similar to that found in synchrotron radiation user facilities.
• Proper UHV handling practice is required in accordance with BSA document
LT-ENG-RSI-SR-VA-002.
• Each mirror shall be cleaned at the Contractor’s facility in a manner that is consistent with the figure and roughness requirements specified in this SOW/SPC.
8.4 Mirror Optical Surface Specifications
8.4.1 The mirror substrates shall be manufactured according to the specifications reported below. The figure of the optical surface of the mirror is a custom diaboloid with the following specifications:
Mirror Technical Parameters Parameter Value Notes p 1750 mm Source distance qt 6250 mm Tangential focus distance qs 10,000 mm Sagittal focus distance θ 2 degrees Grazing incidence angle
Optical clear aperture As shown in PD-IOS-MIR-0005 Coating 50 nm ± 5% Au, with 5 nm Cr adhesion layer allowed.
Tangential slope error < 0.5 urad RMS Measured over a spatial wavelength range of 1-2 mm to the tangential length of the optical clear area
Sagittal slope error < 3 urad RMS Measured over a spatial wavelength range of 1-2 mm to the sagittal width of the optical clear area
Residual height error < 3 nm RMS Measured over a spatial wavelength range of 1-2 mm to the length/width of the optical clear area
Surface roughness < 1.0 nm RMS Measured over a 100 um to 1 mm spatial wavelength range Surface roughness < 0.3 nm RMS Measured over a 1 to 100 um spatial wavelength range
8.4.2 The aforementioned height and slope errors shall be determined after subtraction of best-fit ellipse reference surfaces from the clear aperture zone.
8.4.3 The Au coating shall extend at least 3 mm beyond the optically clear area.
NSLSII-23ID2-SOW-SPC-003: 23-ID-2 (IOS) INSPIRE Spectrometer Vertical Focusing Mirror Statement of Work and Technical Specification
NSLS-II 9 16APR2025
8.4.4 The mathematical description of the custom diaboloid surface is described in the following Python code. The parameters p, qt, qs, and theta are described in Figure 2 and the values listed in the table containing the mirror technical parameters. x and y are the sagittal and tangential coordinates respectively, and z is the surface height.
8.4.5 Due to the unique nature of this surface, the Contractor shall provide BSA with the calculated surface profile on a 1 mm or smaller mesh size for approval prior to polishing the figure.
def surface_z(x, y, p, qt, qs, theta):
sin = np.sin(theta) cos = np.cos(theta) a = (qs - qt)/qs b = (qs - qt)/qs**2 c = 0.5*(1/(qt-qs)) g = (a+b*y)
# A
A = -4*(c**2*g**4*x**4 + 2*c*(p+qt)*g**2*x**2 + (p+qt)**2-(p-qt)**2*sin**2)
# B
B = 4*sin*(
+ c**2*(p+qt)*g**4*x**4
+ (2*c*(p+qt)**2*g**2 + (p-qt)*(g**2-2*g))*x**2
+ 2*(p+qt)*(2*p*qt-(p-qt)*cos*y)
# C
Tx8 = c**4*g**8*x**8
Tx6 = 2*c**2*g**4*( 2*c*(p+qt)*g**2 - g**2 + 2*g - 2 )*x**6
Tx4 = g**2*(
+ 4*c**2*g**2*( (p**2+3*p*qt+qt**2) - (p-qt)*cos*y - y**2 )
- 4*c*(p+qt)*(g**2 - 2*g + 2)
+ g**2 - 4*g + 4
)*x**4
Tx2 = -4*(p+qt)*(
+ (2*c*(p-qt)*g**2 + g**2 - 2*g)*cos*y
+ 2*c*g**2*(y**2-p*qt)
+ (p*g*(g-2) + (p+qt))
)*x**2
Tx0 = -4*sin**2*(p+qt)**2*y**2
C = Tx8 + Tx6 + Tx4 + Tx2 + Tx0 z = 0.5*(1/A)*(-B + np.sqrt(B*B - 4*A*C)) return z
Version 1 10 Brookhaven National Laboratory
8.5 Testing Requirements
8.5.1 Roughness and shape profile
• The figure error, surface micro-roughness of each substrate shall be measured and reported.
• Raw data shall be provided.
• Verification of the mirror figure will take place at BNL using the NSLS-II metrology tools.
• Figure/slope measurement shall be measured along the lines illustrated in Figure 3.
• Roughness shall be measured at all the intersection points between the sagittal and tangential traces using a micro interferometer or other method reviewed and approved by BSA.
Figure 3 - Diagram showing the location of the tangential and sagittal metrology traces. Roughness measurements shall be performed at all the intersections of the metrology traces.
8.5.2 The Contractor shall submit an Inspection Test Report of metrology results and associated raw data with each mirror at the time of delivery.
• The Inspection Test Report shall include machine-readable raw data sets for all metrology performed.
• Data sets shall be in plain ASCII text, or another format subject to BSA review and approval.
• The Contractor shall describe the file formats and supply necessary constants and parameters to permit independent data analysis of the raw data.
• If possible, a full map of the clear aperture shall be provided.
8.5.3 The Contractor shall provide two silicon wafer test polishing coupons coated with the same process that will be applied to the mirrors, for qualification reflective coating deposition process by BSA.
• The exact shape and dimensions (including thickness) of the coupons are at the discretion of the Contractor, subject to review and approval by BSA.
• These test coupons shall be prepared and separately delivered to BNL as soon as feasible and prior to BSA qualification of the reflective coating deposition process.
A B C D
MIRROR, VERTICAL FOCUSING, INSPIRE SPCT
PD-IOS-MIR-0005 A
SHEET SIZE DRAWING/PART NUMBER REVISION
SHEET OF1 1
DRAWN BY
CHECKED BY
VACUUM
APPROVAL
ENGINEER
APPROVAL
SUPERVISOR
APPROVAL
C. LONGO
C
WBS#
UNLESS OTHERWISE SPECIFIED
ALL DIMENSIONS ARE IN MILLIMETERS
DIMENSIONS IN BRACKETS [xx.xx] (WHERE PRESENT)
ARE INCHES AND ARE FOR REFERENCE ONLY
INTERPRET DRAWING AS PER ASME Y14.5-2009
DIMENSIONAL TOLERANCES
X. 1.500 .X 0.750
.XX 0.400
.XXX 0.120
ANGULAR TOLERANCE
.5
FINISH
THIRD ANGLE
PROJECTION
BREAK EDGES & SHARP CORNERS 0.120 MIN. TO 0.750 MAX
2/14/2025
BROOKHAVEN NATIONAL LABORATORY
BROOKHAVEN SCIENCE ASSOCIATES
UPTON, NEW YORK 11973
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En g\
LT
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Exploring Life's Mysteries, Protecting its Future
SCALE:
MATERIAL
Silicon Crystal
MASS
6.3 lbmass
3.2
ESH&Q
RISK LEVEL
ES&H APPROVAL
NEXT ASSY:
QA APPROVAL
PHOTON DIVISION
IOS BEAMLINE, MIRRORS
R. GAMBELLA 4/2025
N/A N/A
C. ENG 4/2025
J. DVORAK 4/2025
R. LEE 4/2025
L. GARSKE 4/2025
04.03.02.01.03.15 A2N/A 1 : 2
REVISION HISTORY
REV DESCRIPTION DATE DESIGNER CHECKED BY ENGINEER
A RELEASE PER ECO-007201 4/2025 C. LONGO R. GAMBELLA C. ENG
OPTICAL AREA
370.00
350.000.10
TBD
40.000.10
6.000.202X 6.000.202X
6.000.202X
50.00 - 0.10 0+
A
.05 A
.05 A
.05 2 SURFACES
.05 D
NOTES:
1. REFER TO SPECIFICATION NSLSII-23ID2-SOW-SPC-003 FOR TECHNICAL
AND PERFORMANCE REQUIREMENTS.
2. ITEM IDENTIFICATION: BAG AND TAG WITH PART NO. AND APPLICABLE REV. LETTER.
3. CHAMFER ALL EDGES .5 X 45°.
4. SERIAL NUMBER MARKING & BEAM DIRECTION: ENGRAVE USING 4.0 HIGH CHARACTERS
IN APPROXIMATE LOCATIONS SHOWN
INTERFACE CONTROL DRAWING
.40 A B
.40 A C
C
D
BEAM DIRECTION INDICATOR
SEE NOTE 4 SERIAL NO. MARKING
SEE NOTE 4
2 SURFACES
B
NATIONAL SYNCHROTRON LIGHT SOURCE II
BROOKHAVEN SCIENCE ASSOCIATES
UPTON, LONG ISLAND, N.Y. 11973
QF-043, REV C
PROJECT:
Design and Fabrication of Components for NSLS-II UHV Systems
LT-ENG-RSI-SR-VA-002 12/18/2008 A
DOCUMENT NUMBER DATE REV
RREEVVIISSIIOONN CCOONNTTRROOLL SSHHEEEETT
REV DESCRIPTION OF CHANGE(S) DATE WRITTEN BY APPROVED BY ENTERED BY
A First issue 12/15/08 H.-C. Hseuh H.-C. Hseuh , N.
Gmür, E. Cheswick, F. Willeke
H.-C. Hseuh
B
C
D
E
F
Design and Fabrication of Components for NSLS-II UHV Systems
CONTENTS
1 Introduction 2 Scope of Document 3 Applicable Documents
3.1 Current Revisions
3.2 Order of Precedence
4 Technical Requirements
4.1 Technical Requirements
4.2 Design Options and Design Reviews
4.3 Material Selection
4.3.1 UHV-Compatible Materials
4.3.2 UHV-Incompatible Materials
4.3.3 Flanges and Bi-Metal Material
4.4 Fabrication
4.4.1 Machining
4.4.2 Welding
4.4.3 Brazing
4.5 Cleaning
4.6 Assembly
4.7 Acceptance Tests
4.7.1 Dimensional Inspection
4.7.2 Leak Test
4.7.3 Outgassing Rate and Residual Gas Analysis
4.7.4 Bakeout
5 Quality Assurance Requirements and Provisions 6 Preparation for Delivery
Design and Fabrication of Components for NSLS-II UHV Systems
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Design and Fabrication of Components for NSLS-II UHV Systems
1 INTRODUCTION
The National Synchrotron Light Source-II Project (“NSLS-II,” hereafter) is to design and construct an electron storage ring with a circumference of 792 m. To provide a long beam lifetime for the circulating electron beam, ultrahigh vacuum (UHV) of 10-10 mbar, and absence of hydrocarbon contamination are necessary in storage ring and front end vacuum systems. Therefore the vacuum chambers and components inside or mounted on the vacuum chambers must meet very stringent UHV requirements, starting from the design stage throughout fabrication, installation, and commissioning.
2 SCOPE OF DOCUMENT
The requirements in this document, in conjunction with the associated Statement of Work (SOW), drawings, specification, and other applicable documents, provides the general requirements in the design, material selections, fabrication and workmanship, cleaning, assembly, inspection, quality assurance, and packaging of chambers, parts, and components (“Components,” hereafter) for NSLS-II UHV systems. It is the responsibility of the manufacturers (“Vendor” hereafter) to demonstrate that the Components meet the requirements of this document prior to their acceptance for installation into NSLS-II UHV systems.
3 APPLICABLE DOCUMENTS
The following document forms a part of this requirement to the extent specified herein. Unless otherwise specified, the issue date or revision level shall be that in effect on the date of the Request for Quote (RFQ).
Exceptions must be approved in writing by BNL.
BNL QA-101, Seller Quality Assurance Requirements (4/08).
3.1 Current Revisions
It is the responsibility of the Vendor to determine that the requirements, the technical specification(s) and applicable drawing(s) used in the preparation of quotations by the Vendor and the subsequent execution of the Purchase Order, are the most current revisions. This is emphasized here, in the interest of the Vender.
3.2 Order of Precedence
In the event of conflicting requirements, requirements specifically stated within the applicable SOW and/or other associated technical specification(s) shall take precedence over requirements stated herein. These conflicting requirements shall be emphasized in the applicable documents.
Design and Fabrication of Components for NSLS-II UHV Systems
4 TECHNICAL REQUIREMENTS
4.1 Technical Requirements
These technical requirements shall be followed for the design, fabrication, and evaluation of all Components to be installed in NSLS-II UHV systems. Any deviation from the requirements is to be brought to the attention of NSLS-II cognizant engineers/scientists for review and approval in writing.
4.2 Design Options and Design Reviews
The basic design rule for UHV Components is to minimize the gas load, with the benefit of low operating pressure. The gas load arises from outgassing both thermal and desorbed, and diffusion and leaks, which can vary by several orders of magnitude. Gas load is minimized by the selection of proper materials, careful surface treatment, and by minimizing the surface area exposed to vacuum.
An important design criterion is the elimination of trapped volumes, which connect to the main vacuum through very small orifices, capillaries, etc. To this end, the vacuum sealing welds, whenever possible, shall be internal welds. Where this is not possible, full penetration external welds must be specified. Similarly, vacuum brazing should leave a smooth run of braze material on the vacuum side of the brazed joints.
There should never be an attempt to seal a trapped volume under any circumstances, whether it is a sealing weld or a threaded bolt. All volumes should be vented, either to atmosphere or to vacuum. For the same reason a vacuum sealing weld should always be a single weld, never a double weld. All threaded fasteners located in blind holes inside vacuum are to be vented through coaxial vent hole.
It is sometimes a requirement that vacuum surfaces be coated. Extreme care should be taken so that there is no possibility of delaminating or peeling of the coatings. The surface to be coated should be clean and free from defects which could give rise to trapped volumes under the coatings. A high-temperature vacuum bake of > 200oC is recommended to test the adhesion, and the Components shall be rejected with any evidence of peeling. If acid bath is used for coating, vacuum bake at > 400oC shall be applied to remove any acid residues from electroplating.
Cleanliness is important at all times. Frequent cleaning of items before, during, and after manufacturing processes is required. Care should be taken not to cross-contaminate “clean” and “dirty” components.
Proper support of the Components during fabrication and evaluation shall be considered at the design stage to eliminate the possibility of distortion and damaging of the Components. All Components must be designed to safely withstand the loading exerted by atmospheric pressure while under vacuum. Modular Components utilizing bellows or geometries which result in differential loading while under vacuum must include proper restraints that prevent lateral and axial movements due to the differential pressure loading.
The design of the Components shall be submitted for review and approval by NSLS-II, including detailed drawings, bill of materials, applicable fabrication processes, etc. This review shall take place prior to the Vendor’s procurement of material and start of fabrication.
4.3 Material Selection
Only UHV-compatible metal and ceramic materials shall be selected for fabrication of the Components for the NSLS-II UHV systems. Some UHV materials may be excluded based on the specific application, e.g., magnetic permeability, temperature limitation, or radiation resistance.
Design and Fabrication of Components for NSLS-II UHV Systems
The Vendor is to supply material certification traceable to its original sources for each batch of material used, including material specification, chemical analysis report, mechanical properties, etc.
4.3.1 UHV-Compatible Materials
The following materials are UHV-compatible, after proper cleaning and degassing:
Stainless steel – Austenitic, 300-series vacuum arc remelt (VAR) or hot-forged electron slag remelt (ESR). Preferred types are ASTM 304L, 304LN, 316L, 316LN, 321, and 347, where “L” signifies low carbon content (which reduces chromium carbide precipitation in the heat-affected weld areas), and “N” is for high nitrogen content. Carbide precipitation can lead to corrosion, reduced strength, and high magnetic permeability.
Aluminum alloys 2219, 5086, A6061-T6, and A6063-T6 for their high strength, easy weldability, and non-magnetic properties
Copper – Oxygen-free high conductivity, OFHC or OFS grades, Beryllium Copper, GlidCop
Titanium – Commercially pure, aircraft quality, type 50A
Ceramics, Refectories – Alumina (> 96% Al2O3) and similar oxide ceramics (however, beryllia is not allowed without written approval by NSLS-II)
Others – glass, sapphire, Inconel, beryllium windows, Monel, Kovar, Mu Metal, Macor, Kapton
4.3.2 UHV-Incompatible Materials
The following materials are not UHV compatible:
Zinc and zinc alloys with high vapor pressure at elevated temperature, found in bearings, silver solders, brass and bronze components
Cadmium and cadmium alloys with high vapor pressure, found in bearings, solders, and steel rust proofing.
Elastomers – O-ring seals for flanges and valves
Organics with high outgassing rates tend to trap hydrocarbon contaminants; and are less radiation resistant. Use of Teflon® is specifically prohibited.
4.3.3 Flanges and Bi-Metal Material
Conflat® flanges with knife-edge sealing surface shall be fabricated from 304L, 316L, or 316LN VAR or ESR stainless steel. Knife edge with 90° angle is preferred over 70° angle.
The leak-check grooves of the Conflat flanges shall be at vertical center when the flange face is vertical;
when not, the grooves shall be parallel to the electron beam direction.
The following bi-metal transition materials have been used successfully in UHV application. However, detailed inspection including, but not limited to, thermal cycling and leak tests, must be made before and after fabrication. Since these materials can vary from lot to lot, all pieces must be 100% inspected and tested.
Design and Fabrication of Components for NSLS-II UHV Systems
Roll-bonded plates and shells between aluminum and stainless steel
Explosion-bonded plates between copper and stainless steel
Explosion-bonded plates between aluminum and stainless steel (e.g., ATLAS® flanges)
4.4 Fabrication
4.4.1 Machining
Only water soluble machining lubricants are allowed. The use of silicone- or sulfur-based machining lubricants is prohibited. All machining is to be carefully controlled to ensure that no foreign matter is embedded in the surface of the material. The use of abrasive wheels or cloths, wire brushes, files, sand, polishing pastes, and the like is prohibited.
Scale removal, etc., shall be performed by careful hand brushing with a clean 300-series stainless steel brush. All Components shall be deburred prior to welding to ensure proper fit at assembly, and to prevent a handling hazard from sharp edges and burrs.
4.4.2 Welding
All parts shall be cleaned prior to welding and brazing. All welding shall be performed in a clean area.
Clean, lint-free gloves shall always be worn. All jigs, fixtures, and heat sinks shall be clean.
Tungsten Inert Gas (TIG) and Electron Beam (EB) welds are recommended for UHV applications. Only clean 300-series stainless steel hand brushes are to be used for removing oxides from welds. Power driven brushes, abrasive papers and abrasive wheels shall not be used.
No welds, brazes, or joints of any kind shall bridge water-cooled channels and vacuum spaces. If possible, the welds are to be on the vacuum side of the joints with single pass seal welding. If not, the welds shall have 100% penetration to eliminate virtual leaks. The inside surface shall be purged with argon or helium throughout the welding operation.
Where high strength requires welding on both sides of thick sections, the side facing the vacuum is to be continuous and the opposite side intermittent. At no time should there be continuous welds on both sides of the joint.
The weld zones shall be free from scale, voids, blow holes, etc. There shall be no visible evidence of inclusions. The welds shall be inspected with X-ray or other non-invasive methods. The use of dye penetrate testing after welding is strictly prohibited. No repair of defective welds is allowed without prior approval from NSLS-II.
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