J-4 - IDIQ - Argon Distribution Equipment SOW.pdf

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US

LBNF/DUNE-US

Argon Distribution Equipment Scope of Work and Performance Specification

Document Number: EDMS 3034446

Scope of Work and Performance Specification

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page ii

Document Approvals

Signatures Required Signature & Date Approved

Originator: Matt Maciazka Cryogenics Systems Engineer

Approver: Jolie Macier LBNF FDC Project Manager

Approver: David Montanari LBNF FDC Deputy Project Manager for Cryogenics

Approver: Mark Adamowski Lead Cryogenics Systems Engineer

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page iii

Revision History and Version Control

This version of the document may not be the current or approved revision. The current revision is maintained in the LBNF/DUNE Document Management System (DocDB) or the Engineering & Equipment Data Management Service (EDMS) where internal Project document approvals are managed. DocDB can be accessed through the web by authorized users (https://docs.dunescience.org/), and EDMS can be accessed through the web at https://edms.cern.ch. This document can be identified by the revision date as indicated in the Version Control Table below.

The current approved version is always available in DocDB or EDMS.

Author Revision Date

Location (EDMS) Description of Changes

Matt Maciazka 2/5/2024 - Original file.

Matt Maciazka 2/14/2024 - Task Order Descriptions added, General Description developed.

Matt Maciazka 2/20/2024 3034446 v.1 Appendix B removed. Changed language in the Requirements. Added figure to the Appendix A.

Version ready for release.

Matt Maciazka 2/23/2024 3034446 v.2 Version post peer review. More language changes.

Final editions.

Matt Maciazka 8/8/2024 Post IRB changes:

• Task orders changed to Task and Delivery Orders https://docs.dunescience.org/_ https://edms.cern.ch/ https://edms.cern.ch/document/3034446/1 https://edms.cern.ch/document/3034446/2

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page iv

Table of Contents

Document Approvals .................................................................................................................................... ii

Revision History and Version Control .......................................................................................................... iii

List of Figures ............................................................................................................................................... vi

List of Tables ............................................................................................................................................... vii

Acronyms and Abbreviations ..................................................................................................................... viii

1 Scope of the Document ....................................................................................................................... 1-1

2 Terms Used in the Document .............................................................................................................. 2-1

3 Applicable Codes and Standards ......................................................................................................... 3-1

4 Introduction ......................................................................................................................................... 4-3

5 Scope of the Supply ............................................................................................................................. 5-3

5.1 Scope of the Supply description ................................................................................................ 5-3

5.2 Scope of the Supply Structure ................................................................................................... 5-4

6 General Description ............................................................................................................................. 6-5

6.1 Delivery Order 1: VJ Pipes and Valves ........................................................................................ 6-6

6.2 Delivery Order 2: Uninsulated Pipes and Valves ........................................................................ 6-7

6.3 Delivery Order 3: Supply of Miscellaneous Equipment Detector Cavern #1 ............................. 6-8

6.4 Delivery Order 4: Supply of CUC Equipment for Detector #1 .................................................... 6-8

6.5 Delivery Order 5: Supply of Miscellaneous Equipment Detector Cavern #2 ............................. 6-9

6.6 Delivery Order 6: Supply of CUC Equipment for Detector #2 .................................................... 6-9

6.7 Task Order 7: Installation of In-Kind Contributions ................................................................... 6-9

7 Functional Requirements .................................................................................................................. 7-10

8 Interface Requirements ..................................................................................................................... 8-11

9 Manufacturing, Installation, and Assembly Requirements ............................................................... 9-11

10 Shipping Requirements ................................................................................................................... 10-11

11 Examinations, Inspections, Tests Requirements ............................................................................. 11-11

12 Deliverables ..................................................................................................................................... 12-11

13 Quality Assurance ............................................................................................................................ 13-11

14 ES&H ................................................................................................................................................ 14-11

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page v

15 Project Management ....................................................................................................................... 15-12

16 Document Management ................................................................................................................. 16-12

Appendix A – Weight and Dimensions Limit for Transport ..................................................................... 16-1

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page vi

List of Figures

Figure 6-1 Simplified flow schematic for LBNF cryogenics with most of the supply boxed in red. ........... 6-5 Figure 6-2 Possible layout of LAr/GAr Purification System. ..................................................................... 6-10 Figure 6-3 Possible layout of Regeneration System. ............................................................................... 6-10 Figure 16-1 FORM 2 Rev B.3 load envelopes ........................................................................................... 16-1

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page vii

List of Tables

Table 5-1 Task Orders for the Argon Distribution Equipment Acquisition ................................................ 5-4

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page viii

Acronyms and Abbreviations

Acronym Definition

AACEI AACE International (Formerly the Association for the Advancement of Cost Engineering)

ACI American Concrete Institute

ANSI American National Standards Institute

APA Anode Plane Assembly

API American Petroleum Institute

ASCE American Society of Civil Engineers

ASME American Society of Mechanical Engineers

ASTM American Society for Testing and Materials

AUP Authorization for Use and Possession

BAHX Brazed Aluminum Heat Exchanger

BPVC Boiler and Pressure Vessel Code (ASME)

CAD Computer-Aided Design

CGA Compressed Gas Association

CFR Code of Federal Regulation

CUC Central Utility Cavern

DOE Department of Energy

DUNE Deep Underground Neutrino Experiment

DXF Data Exchange Format

EJMA Expansion Joint Manufacturers Association

EN European Norm

ES&H Environment Safety & Health

EVMS Earn Value Management System

FAT Factory Acceptance Tests

FD-1 Far Detector 1

FD-2 Far Detector 2

FDC Far Detectors & Cryogenics

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page ix

Acronym Definition

FDR Final Design Review

FEA Finite Element Analysis

FEED Front-End Engineering Design

FMEA Failure Mode and Effect Analysis

FRA Fermi Research Alliance LLC

FSCF Far Site Conventional Facilities

FSF Far Site Facilities

GAr Gaseous Argon

GC General Contractor

GN2 Gaseous Nitrogen

HAZOP Hazard and Operability Analysis

HP Hold Point

IC Installation Coordinator

IEC International Electric Code

IEEE Institute of Electrical and Electronics Engineers

IKC In-Kind Contribution

IRR Installation Readiness Review

ISA International Society of Automation

ISO International Standards Organization

LAr Liquid Argon

LBNF Long-Baseline Neutrino Facility

LBNF/DUNE-US

Long-Baseline Neutrino Facility/Deep Underground Neutrino Experiment-United States – Refers to the US DOE line-item project

LN2 Liquid Nitrogen

MIP Manufacturing and Inspection Plan

MLI Multi-Layer Insulation

MS Microsoft

MTBF Mean Time Between Failures

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page x

Acronym Definition

MTTF Mean Time to Failure

MTTR Mean Time to Repair

NB National Board of Boiler and Pressure Vessels Inspectors

NEC National Electric Code

NEMA National Electrical Manufacturers Association

NET No-Earlier-Than

NFPA National Fire Protection Association

NIST National Institute for Standards and Technology

NLT No-Later-Than

NP Notification Point

NTP Notice To Proceed

NWD Navisworks Document

OEM Original Equipment Manufacturer

OSHA Occupational Safety and Health Administration

PDF Portable Data Format

PDR Preliminary Design Review

PED Pressure Equipment Directive

PFD Process Flow Diagram

PLC Programmable Logic Controller

PRR Production Readiness Review

P&ID Piping and Instrumentation Diagram

QA Quality Assurance

QC Quality Control

QM Quality Manual

RFP Request for Proposals

SCADA Supervisory Control and Data Acquisition

SDSTA South Dakota Science and Technology Authority

SLD Single Line Diagram

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US Page xi

Acronym Definition

SLIN Subcontract Line Item Number

SOW Statement of Work

SPVD Simple Pressure Vessel Directive

STEP Standard for the Exchange of Product Data

SURF Sanford Underground Research Facility

T&C Terms and Conditions

UL Underwriters Laboratories

V&I Valves and Instruments

VIP Vacuum Insulated Pipe

VJ Vacuum-Jacketed

Scope of Work and Performance Specification Scope of the Document

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 3-1

1 Scope of the Document This document defines the Scope of Work for the Argon Distribution Equipment for the Long-Baseline Neutrino Facility (LBNF). Exceptions to these specifications shall not be permitted, except by written approval from FRA.

2 Terms Used in the Document The following terms define provisions within this document. “May” indicates a condition is neither required nor prohibited. “Should” indicates a recommended provision as good practice but is not a requirement. “Shall” indicates a requirement.

Engineering and Construction Codes will be referred to as Codes to refer collectively to various safety standards the scope shall comply with. This will be reflective of both American and International Codes, depending on the applicable Code used by the Subcontractor’s governing body.

3 Applicable Codes and Standards Below are codes, standards, and directives to which the Subcontractor shall adhere, and which shall be applied to the engineering, manufacturing, assembly, and testing of the system subject to this Statement of Work (SOW). All the codes, standards, and directives are intended to be used in their latest published edition at the time of engineering, and include, but are not limited to:

• ACI 318 Building Code Requirements for Structural Concrete and Commentary

• ALPEMA standards

• ANSI ASC A14.3 Safety Requirements for Fixed Ladders

• ANSI/ASSE A1264.1 Safety Requirements for Workplace Surfaces

• ANSI/ISA-5.1 Instrumentation Symbols and Identification

• ANSI/ISA-75.01.01 Flow Equations for Sizing Control Valves

• ANSI/NEMA IM 60000-2021 Industrial Laminated Thermosetting Products

• API 520 Sizing, Selection, and Installation of Pressure-reliving Devices

• API 521 Pressure-relieving and Depressuring Systems

• API 526 Flanged Steel Pressure-relief Valves

• API RP 615 Valve Selection Guide

• ASCE/SEI 7 Minimum Design Loads for Buildings & Other Structures

• ASME B30.20 Below-the-Hook Lifting Devices

• ASME B30.26 Rigging Hardware

• ASME B30.9 Slings

• ASME B31.3 Process Piping

• ASME B31E Standard for the Seismic Design and Retrofit of Above-Ground Piping Systems

• ASME BPVC Boiler and Pressure Vessel Code

Scope of Work and Performance Specification Applicable Codes and Standards

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 3-2

• ASME BTH-1 Design of Below-the-Hook Lifting Devices

• ASME Y14.100 Engineering Drawing Practices

• ASME Y14.5M Dimensioning Tolerance Code

• ASTM E2734/E2734M Standard Specification for Dimensions of Knife-Edge Flanges

• ASTM A380 Standard Practice for Cleaning, Descaling, and Passivation of Stainless-Steel Parts, Equipment, and Systems

• ASTM E493 Standard Test Methods for Leaks Using the Mass Spectrometer Leak Detector in the Inside-Out Testing Mode

• ASTM E498 Standard Test Methods for Leaks Using the Mass Spectrometer Leak Detector or

Residual Gas Analyzer in the Tracer Probe Mode

• ASTM E499 Standard Test Methods for Leaks Using the Mass Spectrometer Leak Detector in the Detector Probe Mode

• CGA S-1.3 Pressure Relief Standards

• CGA G-4.1 Cleaning Equipment for Oxygen Service, Seventh Edition

• EN 12300 Cryogenic vessels. Cleanliness for cryogenic service

• EN 60534-2 Industrial Process Control Valves

• EN 61508 Functional safety of electrical/electronic/ programmable electronic safety-related systems

• EJMA standards

• IEC 61511 Functional safety - Safety instrumented systems for the process industry sector

• IEEE 315 Graphics Symbols for Electrical and Electronics Diagrams (Including Reference

Designation Letters)

• ISA-75.01.01 Industrial-Process Control Valves

• ISA 84.00.01 Functional Safety: Safety Instrumented Systems for the Process Industry Sector

• ISA-S20 Specification Forms for Process Measurement and Control Instruments, Primary

Elements, and Control Valves

• ISA-S5.4 Instrument Loop Diagrams

• ISO 23208 Cryogenic vessels - Cleanliness for cryogenic service

• ISO 28921-1 Industrial valves. Isolating valves for low-temperature applications - Design, manufacturing, and production testing

• ISO 3669 Vacuum technology. Dimensions of knife-edge flanges

• NFPA 70E National Electric Code (NEC)

• OSHA Standard 1910 General Industry Regulation

• OSHA Standard 1926 Safety and Health Regulations for Construction

• UL 471 Commercial Refrigerators and Freezers

• UL 61010-2-011 Safety Requirements for Electrical Equipment for Measurement, Control, and

Laboratory Use - Part 2-011: Particular Requirements for Refrigerating Equipment

Scope of Work and Performance Specification Introduction

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 5-3

• UL 508A Industrial Control Panels

The Subcontractor may propose other recognized standards. Their application is subject to prior written approval by Fermi Research Alliance (FRA). In such cases, the Subcontractor shall submit all the necessary documentation for approval to FRA. FRA, at its discretion, reserves the right to veto the use of certain codes or standards, in part or whole. In no event will FRA be responsible for schedule delays or cost increases associated with the review and evaluation of alternative codes or standards proposed by the Subcontractor.

The International Electric Code (IEC) may be used if supporting documentation is provided to prove an equivalent or greater level of safety to that afforded by NFPA 70E NEC. The use of IEC shall be approved by FRA.

4 Introduction LBNF (http:/lbnf-dune.fnal.gov/) will provide the infrastructure necessary to support the massive neutrino detectors located deep underground at the Sanford Underground Research Facility (SURF) in Lead, SD.

The Deep Underground Neutrino Experiment (DUNE) will employ four (4) such detectors, housed in cryostats requiring almost 70,000 tons of liquid argon (LAr), about 17,500 tons for each cryostat. DUNE (http://www.dunescience.org/) is expected to achieve transformative discoveries, making definitive determinations of neutrino properties, examining the dynamics of supernovae that produced the heavy elements necessary for life, and probing the possibility of proton decay.

5 Scope of the Supply

5.1 Scope of the Supply description

The Argon Distribution Equipment (hereafter referred to, in whole or in part, as “the supply”) serves:

• To transfer gaseous and liquid argon throughout the underground portion of the LBNF, housed 4850 ft (1478 m) below the surface level of the Sanford Underground Research Facility (SURF).

• To transfer, in limited capacity, gaseous and liquid nitrogen (for regeneration) throughout the underground portion of the LBNF.

• As a connection between the various other argon subsystems at the LBNF for the ultimate purpose of building and maintaining a clean reservoir of LAr within the LBNF cryostats.

• To install hardware and equipment delivered by partners as In-Kind Contributions (IKC).

• To provide dry Nitrogen gas to the cryostat insulation space.

• To provide the capability of injecting xenon gas from cylinders into the manifold containing argon vent gas from cryostat feedthroughs, heading to argon condensing.

http://lbnf-dune.fnal.gov/ http://www.dunescience.org/

Scope of Work and Performance Specification Scope of the Supply

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 5-4

• As a connection between the LAr Purification and Purity Monitors.

• To analyze GN2 content of GAr from the surface during cryostat filling.

5.2 Scope of the Supply Structure

The Argon Distribution Equipment acquisition is broken down into three packages:

1. Argon Distribution.

2. Miscellaneous Items manufacturing and installation:

a. Gaseous Nitrogen Cryostat Insulation Purge System

b. Xenon Injection System

c. Purity Monitor Connection

d. Gaseous Nitrogen Analyzer on Gaseous Argon from Surface

3. Installation of hardware and equipment delivered by partners as In-Kind Contributions.

It is anticipated that the overall scope may be grouped into seven task and delivery orders. However, FRA may define additional task/delivery orders as needed or consolidate certain task/delivery orders. The planned task/delivery orders are listed in Table 5-1.

Table 5-1 Task and Delivery Orders for the Argon Distribution Equipment Acquisition

Order Type Order Number Description

Delivery Order 1 VJ Pipes & Valves

Delivery Order 2 Uninsulated Pipes & Valves

Delivery Order 3 Supply of Miscellaneous Equipment Detector Cavern #1

Delivery Order 4 Supply of CUC Equipment for Detector #1

Delivery Order 5 Supply of Miscellaneous Equipment Detector Cavern #2

Delivery Order 6 Supply of CUC Equipment for Detector #2

Task Order 7 Installation of In-Kind Contributions

The Subcontractor shall refer to the SOW of an individual package for the specific requirements of the package’s scope.

Scope of Work and Performance Specification General Description

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 6-5

6 General Description The Argon Distribution Equipment is responsible for:

• Transferring all argon (GAr and LAr) underground at SURF for LBNF, in order to build and maintain a stable, pure supply of LAr for the LBNF cryostats.

• Transferring, in a limited capacity, gaseous and liquid nitrogen (for regeneration) throughout the underground portion of the LBNF.

• Installing hardware and equipment delivered by partners as In-Kind Contributions (IKC).

• Providing dry Nitrogen gas for the cryostat insulation space.

• Providing the capability of injecting xenon gas from cylinders into the manifold containing argon vent gas from cryostat feedthroughs, heading to argon condensers.

• Connecting the LAr Purification and Purity Monitors.

• Analyzing GN2 content of GAr from the surface during cryostat filling.

A simple flow schematic for the LBNF cryogenics subsystems is shown in Figure 6-1 ; the supply includes all of the argon piping underground within the CUC, the drifts between the CUC and the Detector Caverns, and within the Detector Caverns themselves.

Figure 6-1 Simplified flow schematic for LBNF cryogenics with most of the supply boxed in red.

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 6-6

Beyond the general functions outlined previously, the Argon Distribution Equipment must adhere to stringent requirements in several key areas, crucial for safeguarding LBNF's argon supply and optimal cryostat performance. While detailed specifications for each aspect are outlined in sections 7 through 16, a summary of these critical considerations is provided below:

• Material Compatibility: All Argon Distribution System materials must be new, engineered for the specific operating conditions, and compatible with argon and nitrogen at extreme temperatures (i.e., 87 K and 77 K respectively). Pressure vessels, piping, and components must comply with relevant codes and standards. Corrosion protection for milled steel is mandatory.

Material test reports and prior FRA approval are required for specific materials and components, ensuring system integrity and performance.

• Leak Tightness: Given the underground installation and sensitive nature of the LBNF, achieving near-impermeability is paramount. The maximum leak rates at the maximum pressure differential for all components are defined in their respective documentation (Appendix B). As a reference, note that the global leak rate for the piping is set at 10-9 Pa·m3·s-1.

• Thermal Insulation: Some of the scope requires meticulous thermal insulation. For this purpose, vacuum jacketed piping (VJ) with aluminized mylar, Multi Layer Insulation (MLI) shall be utilized. This VJ piping shall adhere to strict heat leak limits and vacuum levels detailed in the scope’s documentation (Appendix B).

• Component Interfaces: Whenever possible, welding connections shall be employed for all connections within the scope of the supply. If welded connections are not feasible due to specific design or operational requirements, metal gaskets shall be used in conjunction with flanged connections (e.g. ConFlat® flanges).

• Vacuum Insulated Interfaces: The Subcontractor shall utilize field joints for vacuum insulated piping interfaces. These joints consist of process and vacuum jacket pipes connected by a cover with a pump port, with labyrinth connections to minimize heat inleak.

• Underground Installation: Whole scope of the supply will be installed deep within the Sanford Underground Research Facility (SURF) at the 4850-foot level. Due to limited access and complex logistics constraints, the design and assembly shall prioritize modularity, pre-assembly, and strategic component placement for efficient installation.

6.1 Delivery Order 1: VJ Pipes and Valves

This delivery order encompasses the Vacuum Jacketed Pipes and Valves system, from engineering to procurement of materials, to final testing and installation at the SURF facility. This includes:

• Engineering: Detailed design, analysis, and planning for the Vacuum Jacketed Pipes and Valves system to ensure precise functionality and compliance with project specifications.

• Manufacturing & Procurement of Materials: Fabrication of vacuum-jacketed piping, valves, instrumentation, and support structures.

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 6-7

• Testing: Stringent testing of all fabricated components to ensure compliance with codes, standards, and project specifications.

• Delivery & Installation: Transportation and Installation of the equipment at SURF, followed by final testing.

• Management & Administration: Comprehensive project management, ES&H and QA/QC oversight, and subcontractor administration to ensure smooth delivery.

Key Features:

• Connects crucial systems: Establishes critical connections between the cryostat and LAr Purification/Regeneration, and between cryogenics packages in the CUC and Detector Caverns.

• Comprises a vast network of around 5,000 feet of pipelines.

• Includes pipelines up to 6-inch process lines and 8-inch vacuum jackets.

• Incorporates approximately 50 valves, lots of which are bellows sealed valves.

6.2 Delivery Order 2: Uninsulated Pipes and Valves

This delivery order encompasses the supply of Uninsulated Pipes and Valves system, from engineering to procurement of materials, to final testing and installation at the SURF facility. This includes:

• Engineering: Detailed design, analysis, and planning for the Vacuum Jacketed Pipes and Valves system to ensure precise functionality and compliance with project specifications.

• Manufacturing & Procurement of Materials: Fabrication of uninsulated piping, valves, instrumentation, and support structures.

• Testing: Stringent testing of all fabricated components to ensure compliance with codes, standards, and project specifications.

• Delivery & Installation: Transportation and installation of the equipment at SURF, followed by final testing.

• Management & Administration: Comprehensive project management, ES&H and QA/QC oversight, and subcontractor administration to ensure smooth delivery.

Key Features:

• Connects crucial systems: Establishes critical connections between the cryostat and GAr Purification, and between cryostat and other equipment to the ventilation exhaust.

• Comprises a vast network of around 7,000 feet of pipelines.

• Includes pipelines up to 12-inch process lines.

• Incorporates approximately 250 valves, lots of which are bellows sealed valves.

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 6-8

6.3 Delivery Order 3: Supply of Miscellaneous Equipment Detector Cavern #1

Delivery Order 3 (Supply of Miscellaneous Equipment Detector Cavern #1) includes several items designated for Detector Cavern #1 listed below, from procurement of materials to final testing (where applicable) and installation at the SURF facility. Those miscellaneous items are:

1. Fence for the Cryogenic Mezzanine – engineering, procurement, manufacturing and installation of a fence on the FD-1 cryostat’s cryogenic mezzanine.

2. Gaseous Nitrogen Cryostat Insulation Purge System - provides dry nitrogen gas to the purge manifold which is responsible for purging the cryostats' walls and floor insulation space. Its operation is based on the nitrogen supply from the two nitrogen generators. During cryostat cooldown, both nitrogen generators will be available to provide double the required flow if necessary. After cooldown, one nitrogen generator will remain in service, while the second unit will serve as a spare.

The scope includes engineering, procurement, and manufacturing of one complete system. This system comprises two Pressure Swing Adsorption Nitrogen Generators, piping, valves, instrumentation, and supports connecting to the LBNF cryogenic system. Additionally, it covers testing, documentation, and delivery to the project receiving facility in the vicinity of Lead, SD;

and installing the system on the cryostat's Mezzanine, connecting it to the LBNF cryogenic system, and conducting final testing.

3. Xenon Injection System - provides the capability of injecting xenon gas from cylinders into the manifold containing argon vent gas from cryostat feedthrough, heading to argon condensing.

The system is to be located on the mezzanine over the cryostat. The station can hold two Xenon cylinders. Xenon cylinder storage is assumed at 4850 level in a cylinder rack against a drift wall.

The mezzanine portion of the station can be removed after the Xenon injection Is completed.

The scope includes engineering, procurement, manufacturing, and delivery of one complete system, including components such as scale stations, solenoid valves, check valves, purge valves, pressure regulators, mass flow controllers, manual ON/OFF valves, a cylinder lift truck, a filter, and associated tubing and fittings. Additionally, it involves installing the system on the FD-1 cryostat Mezzanine, connecting it to the interfaces with the LBNF cryogenic system, and conducting final testing.

6.4 Delivery Order 4: Supply of CUC Equipment for Detector #1

Delivery Order 4 (Supply of CUC Equipment for Detector #1) includes several items designated for the CUC, used to support Far Detector 1 listed below, from procurement of materials to final testing (where applicable) and installation at the SURF facility. Those miscellaneous items are:

1. Purity Monitor Connection – engineering, procurement, manufacturing, installation, and testing of cryogenic lines connecting the LAr Purification 1 with its Purity Monitors.

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 6-9

2. GN2 analyzer for Argon pipe in the shaft – the procurement and installation of a SERVOPRO Plasma continuous GN2 content analyzer for the Argon coming from the surface during cryostat filling.

6.5 Delivery Order 5: Supply of Miscellaneous Equipment Detector Cavern #2

Delivery Order 5 (Supply of Miscellaneous Equipment Detector Cavern #2) mirrors the scope outlined in Delivery Order 3, tailored specifically for Detector Cavern #2.

6.6 Delivery Order 6: Supply of CUC Equipment for Detector #2

This Delivery Order includes engineering, procurement, manufacturing, installation and testing of cryogenic lines connecting the LAr Purification 2 with its Purity Monitors (aka. Purity Monitor Connection).

It is the same scope as outlined in Delivery Order 4 item 1, but for Detector #2.

6.7 Task Order 7: Installation of In-Kind Contributions

The scope of Task Order 7 (Installation of In-Kind Contributions) includes the installation and testing of equipment, mainly cryogenic, manufactured by partners and delivered to the project in Lead, SD. The equipment is organized in nine (9) packages:

• LAr Purification 1 and 2.

• GAr Purification 1-2.

• Regeneration System 1 and 2.

• Argon Condensers System 1 and 2.

• LAr Circulation 1 and 2.

An example of a typical Argon purification package is show in Figure 6-2, whereas a possible Regeneration System is shown in Figure 6-3.

Scope of Work and Performance Specification Functional Requirements

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 7-10

Figure 6-2 Possible layout of LAr/GAr Purification System.

Figure 6-3 Possible layout of Regeneration System.

7 Functional Requirements

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific functional requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

Scope of Work and Performance Specification Interface Requirements

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 14-11

8 Interface Requirements

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific interface requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

9 Manufacturing, Installation, and Assembly Requirements

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific manufacturing, installation, and assembly requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

10 Shipping Requirements

Delivery of all items will be at the project receiving facility (warehouse) in the vicinity of Lead, SD. The Subcontractor shall refer to the SOW of an individual package of the scope for the specific shipping requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

11 Examinations, Inspections, Tests Requirements

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific examinations, inspections, tests requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

12 Deliverables

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific deliverables of the package’s scope. All of those will be issued with each Task/Delivery Order.

13 Quality Assurance

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific quality assurance requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

14 ES&H

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific ES&H requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

Scope of Work and Performance Specification Project Management

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 16-12

15 Project Management

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific project management requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

16 Document Management

The Subcontractor shall refer to the SOW of an individual package of the scope for the specific document management requirements of the package’s scope. All of those will be issued with each Task/Delivery Order.

Scope of Work and Performance Specification Appendix A – Weight and Dimensions Limit for Transport

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 16-1

Appendix A – Weight and Dimensions Limit for Transport

The following document is part of this Scope of Work:

• Appendix A — FORM 2 Rev B.3 load envelopes.pdf

NOTE: The underslung load envelope is being updated and will be available prior to the start of the engineering phase.

Figure 16-1 FORM 2 Rev B.3 load envelopes