J-4 Statement of Work - Argon Receiving 07-16-2024.pdf

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

LBNF/DUNE-US

Argon Receiving Facilities

Scope of Work and Performance

Specification

Document Number: EDMS 2211568

Mark Adamowski

Lead Cryogenics System Engineer

Matt Maciazka

Cryogenics System Engineer

David Montanari

LBNF FDC Cryogenics Project Manager

Argon Receiving Facilities 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: Jeremy Duncan Procurement Responsible Person

Approver: Jolie Macier LBNF FDC Project Manager

Approver: David Montanari LBNF FDC Cryogenics Project Manager

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

Kevin Haaf 08/05/21 Original

Kevin Haaf 09/01/22 Updates to major sections

Kevin Haaf 12/27/22 Updates to major sections following FDR

Matt Maciazka 06/28/23 2211568 v.7 Updates

Matt Maciazka 07/27/23 2211568 v.8 Updates – changed template, all comments addressed

Matt Maciazka 04/12/24 2211568 v.9 Document name change for RFP release.

Minor editorial changes.

Appendix list update.

David Montanari 07/09/24 Comments

Matt Maciazka 07/16/24 2211568 v.10

Language polished.

Appendix C changed.

Required vaporizer properties embedded into the SOW.

Valve seat tightness requirement relaxed.

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 .............................................................................................................................................. vii

List of Tables .............................................................................................................................................. viii

Acronyms and Abbreviations ....................................................................................................................... ix

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 Structure ................................................................................................... 5-4

5.2 Additional Requirements for the Scope ..................................................................................... 5-5

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

6.1 Modes of Operation ................................................................................................................... 6-8

7 Functional Requirements ................................................................................................................... 7-9

8 Operational Requirements............................................................................................................... 8-11

9 Interface Requirements ................................................................................................................... 9-12

10 Other Requirements .................................................................................................................. 10-16

10.1 Mechanical ............................................................................................................................. 10-16

10.2 Flexible Elements in Pipes ...................................................................................................... 10-16

10.3 Thermal Isolation ................................................................................................................... 10-16

10.4 MLI Use .................................................................................................................................. 10-19

10.5 Leak Tightness ........................................................................................................................ 10-20

10.6 Specifications of Supplied Equipment ................................................................................... 10-21

10.7 Pressure Relief Devices .......................................................................................................... 10-21

10.8 Vacuum Vessel Relief Devices ................................................................................................ 10-21

10.9 Temperature Sensors ............................................................................................................. 10-22

10.10 Pressure Sensors .................................................................................................................... 10-22

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

10.11 Heaters ................................................................................................................................... 10-23

10.12 Materials ................................................................................................................................ 10-23

11 Manufacturing, Installation, and Assembly Requirements ....................................................... 11-24

11.1 Manufacturing ....................................................................................................................... 11-24

11.2 Labeling .................................................................................................................................. 11-24

11.3 Welding .................................................................................................................................. 11-24

11.4 Tube and Pipe Bending .......................................................................................................... 11-25

11.5 Cleaning .................................................................................................................................. 11-25

11.6 Installation ............................................................................................................................. 11-25

12 Shipping ...................................................................................................................................... 12-26

13 Examinations, Inspections, Tests ............................................................................................... 13-27

13.1 General ................................................................................................................................... 13-27

13.2 Non-Destructive Tests of Welds ............................................................................................ 13-29

13.3 Helium Leak Tightness Tests .................................................................................................. 13-29

13.3.1 General ........................................................................................................................... 13-29

13.3.2 From the Atmosphere to Insulation Vacuum ................................................................ 13-30

13.3.3 From Process Pipes to Insulation Vacuum ..................................................................... 13-30

13.3.4 From the Atmosphere to Process Pipes ......................................................................... 13-31

13.4 Cold Test................................................................................................................................. 13-31

13.5 Pressure Test .......................................................................................................................... 13-31

13.6 Test of Rotating Equipment ................................................................................................... 13-32

13.7 Cleanliness Control ................................................................................................................ 13-32

13.8 Dimensional Control .............................................................................................................. 13-32

13.9 PLC Testing ............................................................................................................................. 13-32

13.10 Factory Acceptance ................................................................................................................ 13-32

13.11 Transport Accelerations ......................................................................................................... 13-33

13.12 Factory Outlet Inspection ...................................................................................................... 13-33

13.13 FRA Incoming Inspection (at SURF) ........................................................................................ 13-33

13.14 Final Position Inspection ........................................................................................................ 13-34

13.15 Positioning and Layout Control .............................................................................................. 13-34

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

13.16 Interfaces Control .................................................................................................................. 13-34

13.17 Hydraulic Continuity Control.................................................................................................. 13-34

13.18 Control of External Supports .................................................................................................. 13-34

13.19 Final Acceptance of the Argon Receiving Facilities ................................................................ 13-35

13.19.1 Pre-commissioning Acceptance Test ......................................................................... 13-35

14 Deliverables for the Kick-Off Meeting........................................................................................ 14-35

15 Deliverables for the Engineering Phase ..................................................................................... 15-35

16 Deliverables for the Argon Receiving Facilities Manufacturing ................................................. 16-37

17 Deliverables for the Receiving Facilities Installation and Startup .............................................. 17-38

18 Quality Assurance ...................................................................................................................... 18-39

19 ES&H .......................................................................................................................................... 19-40

20 Project Management ................................................................................................................. 20-40

21 Documentation Management.................................................................................................... 21-42

Appendix A – Argon Receiving Facilities FRA Conceptual Design ............................................................ 21-1

Appendix B – Argon Receiving Facilities Interface Matrix ....................................................................... 21-1

Appendix C – Argon Receiving Facilities Equipment Data ....................................................................... 21-1

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

List of Figures

Figure 6-1: Simplified flow schematic for LBNF cryogenics ....................................................................... 6-6 Figure 6-2: Argon Receiving Facilities PFD ................................................................................................. 6-7 Figure 9-1: Top-down view of the Argon Receiving Facilities envelope and conceptual layout ............. 9-13 Figure 9-2: Isometric view of the Argon Receiving Facilities envelope and conceptual layout .............. 9-14

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

List of Tables

Table 6-1: Argon Receiving Facilities Modes of Operation ........................................................................ 6-8 Table 9-1: Summary of ambient conditions - outside .............................................................................. 9-15 Table 9-2: Summary of ambient conditions - inside of the purity shed .................................................. 9-15 Table 9-3: Summary of the requirements ................................................................................................ 9-15 Table 9-4: Summary of available resources ............................................................................................. 9-16 Table 10-1: Maximum allowable heat leaks for cryogenic vacuum insulated pipes ............................. 10-16 Table 10-2: Vacuum levels in an insulation vacuum jacket (vacuum jacket) ......................................... 10-18 Table 10-3: Vacuum vessel pressure range ........................................................................................... 10-18 Table 10-4: Maximum acceptable helium leak rates ............................................................................. 10-20 Table 13-1: Minimum control point for manufacturing and installation of the supply ........................ 13-28

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

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

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

ESH Environment Safety and 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 x

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

GAN Gaseous Nitrogen

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

LIN Liquid Nitrogen

LN2 Liquid Nitrogen

MIP Manufacturing and Inspection Plan

MLI Multi-Layer Insulation

MS Microsoft

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

Acronym Definition

MTBF Mean Time Between Failures

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

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

Acronym Definition

SLD Single Line Diagram

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 Receiving Facilities 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

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

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

Scope of Work and Performance Specification Applicable Codes and Standards

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

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

UL 508A Industrial Control Panels

Scope of Work and Performance Specification Introduction

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

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

The Argon Receiving Facilities serve as the point of entry for Argon to the greater LBNF systems. The Facilities are located at the surface level of the Sanford Underground Research Facility (SURF), some 4850 feet (1478 meters) above the cavern spaces that house the DUNE detectors. The Facilities thus serve to not only accept Argon deliveries, but also to test them for acceptability, temporarily store them, and finally to vaporize stored LAr to be transferred underground via the nearby Ross Shaft. In Figure 6-1 and Figure 6-2 Process Flow Diagrams for the greater LBNF cryogenics systems and the Argon Receiving Facilities, are presented respectfully.

The successful bidder (hereafter referred to as the “Subcontractor”) shall engineer, manufacture, pack, deliver, install, and perform the acceptance tests at SURF for the Argon Receiving Facilities (hereafter referred to, in whole or in part, as the “supply”) for LBNF.

The Subcontractor shall furnish all labor, professional engineering services, equipment, and materials to deliver the supply in accordance with the requirements of this SOW to SURF in the vicinity of Lead, South Dakota.

The supply includes two (2) dedicated truck stations to offload liquid argon (LAr) to be used at LBNF.

Further, the LAr tanks shall be equipped to reject their contents to trucks at the appropriate stations. This shall facilitate the recovery of LAr at the end of the experiment.

Scope of Work and Performance Specification Scope of the Supply

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

The supply additionally comprises two (2) 50 m3 LAr storage tanks, to be used in conjunction with two (2) additional 50 m3 tanks outside the scope of this supply (provided by FRA, to be installed by the Subcontractor) to provide surface-level storage of LAr, for a total of 200 m3. The supply tanks may be temporary installations required only for the duration of the active LAr delivery and fill of the belowground LAr cryostats (expected to continue until end of 2033) or may be permanent fixtures depending on which route is most cost effective. The tanks outside the scope of this supply shall be permanently installed. The Subcontractor shall install each of the tanks onsite, including both those required in the supply and those provided by FRA.

The supply further includes any necessary equipment to discharge LAr from the tanks and subsequently vaporize it so that Gaseous Argon (GAr) may be sent to the relevant LBNF cryogenics subsystems, as well as test deliveries and tank contents for purity (see General Description below).

Finally, the supply includes all interconnecting piping and equipment (including all control and safety valves, etc.) between the aforementioned components (including the two tanks outside the supply’s scope), as well as all documents and drawings for the design.

5.1 Scope of the Supply Structure

The Receiving Facilities acquisition is broken down into a Base Subcontract and three Options as follows:

Base Subcontract

The Base Subcontract SOW includes the detailed engineering of the whole system, consisting of two (2) truck stations, four (4) x 50 m3 LAr storage tanks, and the piping and equipment necessary to transfer and vaporize stored LAr to the interface point between the supply and the nearby Ross Shaft. It also includes the development of a schedule plan for the installation and commissioning of the supply, as well as all material, equipment, documentation and labor necessary to perform the work in accordance with contractual requirements to meet the defined schedule.

Option #1

The Option #1 Subcontract SOW is the procurement of materials and manufacturing of the two (2) truck stations, the two (2) 50 m3 storage tanks included in the supply, and the piping and equipment necessary to transfer and vaporize stored LAr to the interface point. It also includes the testing of the fabricated items per applicable codes and standards and in accordance with the specifications, the delivery of equipment to SURF, its installation and startup. It further includes the supply of capital spares and 2-year operation spares for supplied equipment and warranty for two (2) years. This scope includes management, ESH&Q oversight, and the administration of all subcontracts necessary to deliver, install and startup the supply. This scope shall be inclusive of all material, equipment, labor, etc., necessary to perform the work in accordance with contractual requirements to meet the defined schedule.

Scope of Work and Performance Specification Scope of the Supply

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

Option #1A

The Option #1A is the supply of the process controls for the equipment. It includes the procurement of materials, manufacturing, delivery, installation and testing of the PLCs, HMI, and programming.

Option #1B

The Option #1B is the execution of the pre-commissioning after the completion of the installation and prior to the startup. This may be required if there is too much time between completion of the installation and startup.

Option #2

The Option #2 is the supply of maintenance provisions for five (5) years following the completion of the commissioning of the system.

5.2 Additional Requirements for the Scope

Additional requirements for the scope are outlined below:

1. The Subcontractor shall furnish all facilities, equipment, special tooling, consumables, materials, and labor for the work described in this SOW except where explicitly excluded in this and related documentation.

2. The Subcontractor shall provide all materials and labor for engineering, analysis, manufacturing, validation, delivery, installation and startup of the supply.

3. The Subcontractor shall perform fluid-dynamic, stress and thermal analyses for the supply to verify the code and performance requirements.

4. The Subcontractor shall provide the complete technical documentation for the supply, including individual technical items and elements.

5. All engineering analyses, engineering models, and manufacturing drawings shall be subject to approval by FRA.

6. The Subcontractor shall furnish spare parts for the supply for capital and 2-year operation, as well as a list of recommended spare items. Additionally, the Subcontractor shall also guarantee the availability of spare parts for ten (10) years thereafter.

7. The Subcontractor shall include the connections for the GAr piping at the interface point en route to the Ross Headframe.

8. The Subcontractor shall conduct all tests, inspections, examinations, material tests, and non-destructive examinations required by the applicable codes and perform any resulting repairs or replacements.

9. The Subcontractor shall furnish all parts deemed necessary during the installation process, including spare parts for non-reusable items.

Scope of Work and Performance Specification General Description

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

10. FRA (or its designated representative agent) reserves the right to witness and inspect any part during the fabrication, assembly, and testing at the Subcontractor or Subcontractor’s suppliers / sub-Subcontractors’ site with as little as one day’s notice.

6 General Description

The Argon Receiving Facilities are responsible for receiving argon delivered at SURF for LBNF. Liquid Argon (LAr) shall be delivered to the Argon Receiving Facilities continuously throughout LBNF’s operations, with the bulk of these deliveries being used to fill the four (4) belowground cryostats that contain the detectors used for DUNE. A simple flow schematic for the LBNF cryogenics is shown in Figure 6-1; the supply includes everything within the Surface envelope at the left side of the PFD. For simplicity, one receiving station, one tank and one vaporizer only are shown. A PFD for the Receiving Facilities (without the Argon sampling) is shown in Figure 6-2.

Figure 6-1: Simplified flow schematic for LBNF cryogenics

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

Figure 6-2: Argon Receiving Facilities PFD

Each of the LBNF cryostats require a large quantity of LAr for their function, utilizing some 17,500 tons each. The experiment requires ultrapure LAr; the Receiving Facilities shall therefore be capable of detecting the level of N2, H2O, and O2 impurities of all LAr deliveries, rejecting any delivery with impurities in excess of 10 ppm N2, 10 ppm H2O, or 5 ppm O2. The level of nitrogen contamination is particularly important and is expected to be much lower than the limit.

The supply shall therefore include the capacity to direct sample argon from the delivery trucks and storage tanks to a nearby testing station. The equipment provided by the Subcontractor shall be used to test the sampled argon against a predetermined purity standard; deliveries that fail against the standard shall not be allowed to proceed and LAr tanks with unacceptable contaminations shall have their contents rejected;

a rejected delivery shall simply not be allowed to proceed, while a contaminated storage tank shall have its contents removed either via venting or transferal to a truck at the station at FRA’s discretion. The Subcontractor shall supply the piping and instrumentation necessary to transfer test samples to the analyzers, as well as the piping necessary to reject contaminated tanks’ contents to the truck stations.

Additionally, the supply shall be automated with respect to each delivery; that is, it shall test LAr deliveries for acceptance or rejection. To this end, the supply includes the instrumentation and equipment required to actuate each necessary control valve.

This means that all LAr deliveries will be screened automatically without requiring the intervention of an FRA engineer, with the sample test results archived appropriately and each rejected delivery communicated effectively to all relevant parties (e.g., with a local green or red light). A LAr delivery shall

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 6-8 be allowed to proceed following a successful purity test; LAr deliveries with unacceptable impurity levels shall not be allowed to proceed and FRA shall be notified immediately of any unacceptable attempted delivery. FRA intends to implement its own PLCs for the Supply to account for these programmatic requirements, though input from the Subcontractor is anticipated and desired. The supply therefore only includes the piping and equipment necessary to facilitate the sampling of LAr from the truck stations and storage tanks.

6.1 Modes of Operation

The supply serves two primary purposes: it is the point of reception for all LAr deliveries at LBNF, and it discharges GAr to the greater facility. To these ends, the supply shall operate under the modes described in Table 6-1.

Table 6-1: Argon Receiving Facilities Modes of Operation

Mode Name Description

1 LAr Reception

The supply serves as the entry point for LAr into LBNF. Because there are stringent requirements on the acceptable purity of incoming LAr, the supply shall “screen” these deliveries automatically to determine whether they may be received or rejected. Acceptable deliveries are to proceed without the intervention of FRA personnel, allowing for deliveries at any time of day or night.

2 LAr Storage

Received LAr is temporarily stored above ground in dedicated tanks.

During the initial stages of LBNF’s operation, deliveries will be frequent (3- 4 trucks per day) — these deliveries will account for the initial cooldown and fill cycles for each of the four (4) cryostats belowground. During this initial stage, all 200 m3 of storage shall be available for use. At later stages (see mode 4 below) less required storage is anticipated.

3 LAr Transfer Because the bulk of the cryogenic equipment at LBNF is approximately one mile below the receiving facilities, stored LAr must be vaporized prior to being transferred underground.

4 LAr Resupply

Periodic resupply for the LAr is an expected requirement over the long life of LBNF/DUNE. This phase largely mirrors the LAr Reception mode outlined above—the LAr requires the same level of scrutiny for deliveries in this phase as it does in the initial supply—but these deliveries are anticipated to be infrequent. This may in turn relax the total required

Scope of Work and Performance Specification Functional Requirements

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 7-9

Mode Name Description storage to those tanks provided in the supply scope (see the Functional Requirements section (7) regarding the storage tanks below).

5 Decommissioning

At the experiment’s end, it will be desirable to recover as much LAr as possible from the cryostats belowground. This LAr shall be brought to the surface by and is the responsibility of FRA; that is, the method by which the LAr is transferred above ground is not included in this Supply. For this mode of operation, the Receiving Facilities shall again serve as temporary storage and facilitate the offloading of LAr to trucks in a near reverse of the original operative mode.

7 Functional Requirements

The functional requirements for Argon Receiving Facilities are described below.

1. The receiving facilities shall be designed for an operational lifetime of 30 years.

2. LAr Reception

a. The receiving facilities shall serve to receive incoming LAr at two dedicated truck stations.

i. The receiving facilities shall be designed to accommodate activity at each of the truck stations simultaneously, e.g., it shall be possible to transfer two LAr deliveries at once (see Appendix B for details with respect to anticipated flow rates and pressure).

b. The subcontractor shall provide the piping, valves, and all equipment necessary to transfer samples from the two LAr truck stations to the analyzers, and the analyzers themselves.

3. Storage Tanks

a. The receiving facilities shall store received cryogens in dedicated tanks, for the duration of the fill cycles for each cryostat at LBNF.

i. Two 50 m3 tanks will be provided by FRA; the remaining 100 m3 LAr storage is part of the supply. The datasheets for the FRA-supplied tanks are included in Appendix C.

ii. The two (2) 50 m3 LAr storage tanks included in this supply may be temporary, i.e., any additional tanks may only remain at the receiving facilities for the duration of major LAr deliveries to LBNF (currently until end of 2033). The design and installation shall therefore facilitate their removal without interfering with the continued operation of the supply. Options for the supply storage may include renting and purchase with a buy-back clause.

Scope of Work and Performance Specification Functional Requirements

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

c. The receiving facilities shall provide the capacity to test stored LAr from each of the surface tanks in the same way and to the same standard as it shall for prospective LAr deliveries.

d. The receiving facilities shall provide the capacity to reject contaminated LAr to the truck stations as needed.

e. The LAr tanks shall automatically maintain operating pressure by use of a pressure regulator and pressure building coils in an automated way.

f. The LAr tanks shall be vacuum rated and have relief valves to protect against overpressure both within the tank and for the vacuum jackets. The boiloff rate in each vessel shall not be more than 0.1% per day of the total volume.

g. The LAr tanks shall be instrumented with pressure and liquid level transmitters.

4. Piping

a. Any and all piping transferring LAr shall have vacuum-insulation against heat ingress.

b. Piping responsible for transferring GAr requires no insulation.

c. All piping shall be helium leak checked at 1.0E-09 mBar*L/s.

5. Vaporizers - LAr must be vaporized prior to its transfer to the Ross Shaft; to that end, the vaporizers included in this supply are subject to the following requirements:

a. The vaporizers shall boil LAr for the purposes of transferring it downstream to the Utility Access Pit. See Table 7-1 for operating parameters.

b. Two sets of vaporizers shall be supplied, one in operation and one in stand-by to ensure continuous operations.

c. The vaporizers shall be electric water bath vaporizers as opposed to ambient air or other types.

d. The vaporizers shall allow for the outlet temperature to be automatically maintained.

e. Their heater elements shall be removable.

f. The vaporizers shall include Safety Low Temperature Shutoff Controller and valve (LTCO)

g. Their panel and power controls shall be NEMA rated

h. The vaporizers shall be able to sustain operation in 4 cycles lasting 12-18 months with 12 months off. During their operation they will remain on 24/7 through winter and summer.

After those 4 cycles they will be used only for periodic cryostat top-off (presumably less than 1 day per month).

Table 7-1 Vaporizer properties

Property Unit Value

Minimum capacity kW 300

Turndown range % 0-100

Scope of Work and Performance Specification Operational Requirements

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 8-11

Property Unit Value

Maximum GAr generation kg/hr 4000

Minimum outlet temperature K 288

Minimum outlet pressure barg 1.034

The vaporizers shall be equipped with freeze protection mechanisms to facilitate safe operation under working conditions and in the event of a failure, such as a power loss. FRA has produced a conceptual design from which the prospective vendor is free to draw, provided they obey the design and documentation requirements stated elsewhere in this document. It includes anticipated pipe sizes and lengths, as well as a possible layout for the facilities. This information is included in Appendices A and B.

8 Operational Requirements

The operational requirements for Argon Receiving Facilities are described below.

1. Each tank shall be filled using a common manifold, with control valves dictating to which tank LAr is delivered at any time.

2. Similarly, the tanks shall discharge to a common manifold, with control valves dictating which tank is transferring its contents to the active vaporizer unit.

3. In the event a LAr tank is found to be contaminated, its contents shall be rejected and offloaded to a truck or vented (if a truck is not available and at FRA’s discretion) in an operator-initiated sequence of steps without interfering with the operation of the other tanks.

4. Any of the tanks shall be capable of being taken out of service for maintenance and repair without interfering with the operation of the other tanks.

5. Where possible, the supply should serve to automate as many aspects of the delivery as possible, e.g., starting the purging of the truck station piping or sampling manifolds, mitigating excessive sampling times by means of vacuum pumping, etc.

6. The system shall have the capability to initiate a safe shutdown in the event of reaching the minimum ambient temperature (Table 9-1) and an indefinite loss of power.

7. The supply shall be designed to provide at least 99% availability, with supporting analysis to that effect provided. Data shall include but is not limited to:

a. Mean Time Between Failures (MTBF);

b. Mean Time to Failure (MTTF);

c. Mean Time to Repair (MTTR).

Scope of Work and Performance Specification Interface Requirements

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 9-12

9 Interface Requirements

The interface requirements for Argon Receiving Facilities are described below.

1. The supply shall be capable of delivering vaporized GAr to the Ross Shaft (see Appendix B and Appendix C). The interface is an 8 in SCH 40 NPS (DN 200) stainless steel 304/304L pipe that leads to the Ross Shaft, which is expected to be installed prior to the supply. The Subcontractor therefore shall be responsible for making the final connection.

2. The supply shall be capable of transferring LAr samples from each truck station and any LAr tanks to the purity testing equipment on demand. Each of these lines must be kept separate to avoid cross contamination, and each pipe will terminate at the Purity Shed where the analyzers will also be located (see Appendix A for the shelter’s location). The supply includes the tubing required to transfer test samples from the truck stations and LAr storage tanks, valves, mounting panel and the analyzers themselves. This tubing shall be structurally shielded on all horizontal runs to prevent damage due to weather (e.g., hung underneath C-Channel, etc.).

3. All Pressure Safety Valves (PSVs) shall be in a redundant configuration, with one operational PSV and one spare to ensure pressure relief is available at all times. Change over valves (Safety Valve Selectors) for PSVs shall be provided to allow for easy maintenance of the Pressure Safety Valves.

4. Facility electric power for the supply shall be provided by an FRA electric feed. See Table 9-4 for details.

5. Facility compressed air for the operation of pneumatic valves/etc. shall be provided by the Subcontractor as part of the supply.

6. Any and all isolation valves that serve to interface with piping outside the scope of this supply shall be provided by the Subcontractor.

7. The supply’s system instrumentation wiring shall be terminated in conveniently accessible control interface boxes containing screw connected terminal blocks, grouped locally according to their purpose.

8. The Subcontractor shall include a complete list of instrumentation to be furnished, as well as indicate whether each item is locally displayed and/or computer interfaced. All I/O points shall be brought to screw connected terminal blocks in a local interconnect box. This list specifically excludes hard-wired or proprietary safety interlock systems that are the sole responsibility of the Subcontractor.

9. Where possible, these terminal connection points and control boxes shall be located indoors (i.e., the purity shed) or, if not possible, provided a roofed-over location.

10. The supply shall be located within a space adjacent to the Ross Warehouse, south of the Ross Headframe. The current 3D model of the conceptual design is available in Appendix A. A 3D STEP-file of the Receiving Facilities is also available. The relevant visualization with the supply is shown in Figure 9-1 and Figure 9-2

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 9-13

11. The PLCs (and associated cabinets) shall be provided by FRA, with input into their design from the Subcontractor as necessary. An option for the PLCs and cabinets to be added to the scope of work shall be included in the Subcontractor’s proposal under Option #1A.

12. If the Subcontractor supplies the PLCs per Option #1A, Siemens S7-400 series PLC (Programmable Logic Controller) with SIMATIC PCS 7 shall be used. The use of an alternative PLC shall be approved by FRA.

13. If the Subcontractor supplies the PLCs per Option #1A, the PLC shall be able to communicate with Ignition by Inductive Automation, the SCADA (Supervisory Control And Data Acquisition) platform for the LBNF cryogenic control system. This may be accomplished via the Ignition Allen Bradley driver, Ignition Siemens driver, or OPC UA.

14. If the Subcontractor supplies the PLCs per Option #1A, the receiving facilities shall have automation to allow remote control by operators that do not have specific knowledge of the refrigeration system (User mode) and by operators that have specific knowledge of the refrigeration system (Super-user mode. Password protected to allow access to a selected group of experts).

15. If the Subcontractor supplies the PLCs per Option #1A, the Subcontractor shall provide a list of variables and their addresses (i.e., data blocks) for integration with the SCADA system.

16. If the Subcontractor supplies the PLCs per Option #1A, the Subcontractor shall provide a local engineering station (desktop computer), connected to the receiving facilities PLC, and having all necessary software to configure and program the PLC.

17. FRA will supply water for use in potential water bath vaporizers at 288.7 K.

18. A summary of the on-site environmental conditions is shown in Table 9-1 and Table 9-2 below.

19. A summary of requirements and available utilities is shown in Table 9-3 and Table 9-4 below.

Figure 9-1: Top-down view of the Argon Receiving Facilities envelope and conceptual layout

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 9-14

Figure 9-2: Isometric view of the Argon Receiving Facilities envelope and conceptual layout

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 9-15

Table 9-1: Summary of ambient conditions - outside

Property Unit Value

Outdoor Temperature (Min/Max) F (K) -40 / 96.5 (233 / 309)

Atmospheric pressure psia 12.2

Relative humidity (Min/Max) % 20-100

Table 9-2: Summary of ambient conditions - inside of the purity shed

Property Unit Value

Indoor Temperature (Min/Max) F (K) 60 / 80.3 (288.7 / 300)

Relative humidity (Min/Max) % Not controlled

Dew point (summer/winter) K Not controlled

Table 9-3: Summary of the requirements

Requirement Value

Storage capacity (supplied by Subcontractor) 2 x 50 m3 tanks

Existing storage supplied by FRA 2 x 50 m3 tanks

Argon transfer capacity 4 ton/hr

Scope of Work and Performance Specification Other Requirements

Long-Baseline Neutrino Facility (LBNF) / Deep…