J-4 - Delivery Order 2 - Argon Distribution Uninsulated Pipes Valves SOW (1).pdf

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

LBNF/DUNE-US

Argon Distribution Uninsulated Pipes and Valves Scope of Work and Performance Specification Document Number: EDMS 3043357

Mark Adamowski Lead Cryogenics System Engineer

Roza Doubnik Cryogenics Systems Engineer

Matt Maciazka Cryogenics System Engineer

David Montanari LBNF FDC Deputy Project Manager for Cryogenics https://edms.cern.ch/document/2810641/LAST_RELEASED

Argon Distribution Uninsulated Pipes and Valves Scope of Work and Performance Specification

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

Document Approvals

Signatures Required Date

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 02/19/24 3043357 v.1 Original – based on the EDMS 2810641 v.3

Matt Maciazka 03/07/24 3043357 v.2 Deleted the GN2 piping from the scope.

Matt Maciazka 03/12/24 3043357 v.3 Deleted acquisition division into Base Scope and Option #1.

https://docs.dunescience.org/_ https://edms.cern.ch/ https://edms.cern.ch/document/3043357/1 https://edms.cern.ch/document/2810641/3 https://edms.cern.ch/document/3043357/2 https://edms.cern.ch/document/3043357/3

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

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

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

7 Functional Requirements ............................................................................................................... 7-6

7.1 Mechanical ................................................................................................................................. 7-6

7.2 Flexible Elements in Pipes .......................................................................................................... 7-7

7.3 Leak Tightness ............................................................................................................................ 7-7

7.4 Specifications of Supplied Equipment ....................................................................................... 7-7

7.5 Pressure Relief Devices .............................................................................................................. 7-8

7.6 Pressure Sensors ........................................................................................................................ 7-8

7.7 Materials .................................................................................................................................... 7-8

8 Interface Requirements ................................................................................................................. 8-9

8.1 General Interface Requirements ............................................................................................... 8-9

9 Manufacturing, Installation, and Assembly Requirements ......................................................... 9-12

9.1 Manufacturing ......................................................................................................................... 9-12

9.2 Labeling .................................................................................................................................... 9-12

9.3 Welding .................................................................................................................................... 9-12

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

9.4 Tube and Pipe Bending ............................................................................................................ 9-13

9.5 Cleaning .................................................................................................................................... 9-13

9.6 Installation ............................................................................................................................... 9-13

10 Shipping ...................................................................................................................................... 10-14

11 Examinations, Inspections, Tests ............................................................................................... 11-15

11.1 General ................................................................................................................................... 11-15

11.2 Non-Destructive Tests of Welds ............................................................................................ 11-17

11.3 Helium Leak Tightness Tests .................................................................................................. 11-17

11.3.1 General ........................................................................................................................... 11-17

11.3.2 From the Atmosphere to Process Pipes ......................................................................... 11-18

11.4 Pressure Test .......................................................................................................................... 11-18

11.5 Test of Rotating Equipment ................................................................................................... 11-18

11.6 Cleanliness Control ................................................................................................................ 11-19

11.7 Dimensional Control .............................................................................................................. 11-19

11.8 PLC Testing ............................................................................................................................. 11-19

11.9 Factory Acceptance ................................................................................................................ 11-19

11.10 Transport Accelerations ......................................................................................................... 11-19

11.11 Factory Outlet Inspection ...................................................................................................... 11-20

11.12 FRA Incoming Inspection (at SURF) ........................................................................................ 11-20

11.13 Final Position Inspection ........................................................................................................ 11-21

11.14 Positioning and Layout Control .............................................................................................. 11-21

11.15 Interfaces Control .................................................................................................................. 11-21

11.16 Hydraulic Continuity Control.................................................................................................. 11-21

11.17 Control of External Supports .................................................................................................. 11-21

11.18 Final Acceptance of the Argon Distribution Uninsulated Pipes and Valves ........................... 11-21

12 Deliverables for the Kick-Off Meeting........................................................................................ 12-22

13 Deliverables for the Engineering Phase ..................................................................................... 13-22

14 Deliverables for the Argon Distribution Uninsulated Pipes and Valves Manufacturing ............ 14-23

15 Deliverables for the Argon Distribution Uninsulated Pipes and Valves Installation and Testing .. 15-

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

16 Quality Assurance ...................................................................................................................... 16-25

17 ES&H .......................................................................................................................................... 17-26

18 Project Management ................................................................................................................. 18-26

19 Documentation Management.................................................................................................... 19-27

Appendix A – Weight and Dimensions Limit for Transport ..................................................................... 19-1

Appendix B – LBNF Isometric Drawings and 3D model of LBNF Argon Distribution Uninsulated Pipes and Valves 19-1

Appendix C – Argon Distribution Uninsulated Pipes and Valves Interfaces ............................................ 19-1

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 with some of the supply boxed in red .......... 6-5 Figure 8-1: Top View of the LBNF cryogenics systems layout .................................................................. 8-10

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

List of Tables

Table 6-1: Argon Distribution Modes of Operation ................................................................................... 6-6 Table 7-1: Maximum acceptable helium leak rates ................................................................................... 7-7 Table 8-2: The environmental conditions for SURF CUC and Detector Caverns ..................................... 8-11 Table 11-1: Minimum control point for manufacturing and installation of the supply ........................ 11-16

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 Distribution Piping 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 The Argon Distribution Uninsulated Pipes and Valves (hereafter referred to, in whole or in part, as “the supply”) serves to transfer gaseous argon and nitrogen (in limited capacity, for regeneration) throughout the underground portion of LBNF, housed 4850 ft (1478 m) below the surface level of the Sanford Underground Research Facility (SURF). The supply therefore connects the various other argon subsystems at LBNF. A simplified Process Flow Diagram for the LBNF cryogenics is shown in Figure 6-1.

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 Distribution Uninsulated Pipes and Valves.

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, install it underground at SURF and perform acceptance tests.

The supply includes myriad of uninsulated piping, with associated valves, instrumentation, and all required support structures.

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

5.1 Scope of the Supply Structure

The Argon Distribution Uninsulated Pipes and Valves acquisition includes:

• The detailed engineering of the whole system, consisting of the Uninsulated Piping with associated valves, instrumentation, and required support structures for each.

• The development of a schedule plan for the installation and testing 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.

• The procurement of materials and manufacturing of the Uninsulated Piping and associated valves, instrumentation, and support structures.

• 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 final testing.

• Management, ES&H and QA/QC oversight, and the administration of all subcontracts necessary to deliver 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.

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 final testing of the supply.

3. The Subcontractor shall perform 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 2-year operation, if any, 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 piping at each interface point.

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.

Scope of Work and Performance Specification General Description

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

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

10. The Subcontractor shall respect the logistics constraints to transport the equipment to the 4850L. See Appendix A.

11. 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 Distribution Uninsulated Pipes and Valves is responsible for transferring all warm gaseous argon (GAr) underground at SURF for LBNF, in order to assist in maintaining a stable, pure supply of LAr for the LBNF cryostats. A simple flow schematic for the LBNF cryogenics subsystems is shown in Figure 6-1; the supply includes all of the uninsulated 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 some of the supply boxed in red

Isometric views of the pipe layouts are available in Appendix B. These layouts include the expected pipe envelopes; the Subcontractor shall not exceed these without written approval by FRA.

Scope of Work and Performance Specification Functional Requirements

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

6.1 Modes of Operation

The supply serves to distribute GAr throughout the underground for myriad purposes, exchanging argon from the various cryogenic subsystems. The supply’s modes of operation therefore mirror those of the underground facility and can be defined as described in Table 6-1.

Table 6-1: Argon Distribution Modes of Operation

Mode Name Description

1 GAr Supply

GAr enters into the underground space via the Ross Shaft piping (not included in this supply) and makes its way to the CUC, where it must be purified and then transferred to the condenser units in the Detector Caverns.

The supply accepts GAr at the CUC entrance, transfers it to the GAr filters, and then directs purified GAr to the condenser units.

2 Common Vent

The supply serves to collect all vent gas, GAr and GN2, throughout LBNF’s cryogenic infrastructure. To this end it comprises dedicated vent headers for each cryostat and associated equipment in the Detector Caverns, as well as dedicated vent headers for the Nitrogen System and the Purification Systems (GAr and LAr) in the CUC.

Cryostat pressure control

Primary cryostat pressure control is provided by a condenser (outside of this scope). The Argon Distribution System provides additional control by employing:

1. Controlled vent valve, which provides additional pressure venting, if needed (starts opening at 150 mbarg, fully open at 200 mbarg).

2. Safety pressure relief valve, which:

a) Protects cryostat from exceeding Maximum Allowed

Operating Pressure – opens at 250 mbarg.

b) Protects cryostat from vacuum – opens at -50 mbarg.

7 Functional Requirements

7.1 Mechanical

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

2. All piping shall have adequate flexibility for all design conditions.

3. All piping shall be adequately supported for all design conditions.

4. Whenever possible, welded connections shall be used.

5. When gaskets are required, metal gaskets shall be used whenever possible.

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

7.2 Flexible Elements in Pipes

1. Flexible hoses and bellows may be used. However:

a) Bellows should pass a receiving leak test to ensure they are leak-tight before welding.

b) The Subcontractor shall provide a plan to protect the bare convolutions of the bellows during welding, testing, and transport.

c) Unbraided bellows are not allowed; all bellows must have at least a single braid for protection.

2. Multiple layered bellows shall be engineered to have a vent hole between each layer to prevent trapped volume gas from over pressurization.

3. The Subcontractor should limit the usage of bellows and flexible hoses, promoting the use of flexibility analysis where possible.

7.3 Leak Tightness

The maximum leak rates at the maximum pressure differential for non-vacuum insulated components shall not exceed the values given in Table 7-1.

Table 7-1: Maximum acceptable helium leak rates

Description Maximum acceptable Helium leak rate

Pa⋅m3/s

Non-vacuum insulated piping to atmosphere 10-9

Individual leak rate of a flanged assembly 10-9

Individual leak rate of helium across the valve seat at maximum allowable pressure and any operation temperature

10-5

7.4 Specifications of Supplied Equipment

1. All components shall be supplied by the Subcontractor along with associated specification sheets.

2. All process control valves shall be sized according to ANSI/ISA-75.01.01 Flow Equations for

Sizing Control Valves and shall provide for proper control for all modes of operations.

3. All components shall have the manufacturer name and model number clearly and permanently marked for visual observation.

4. All components installation shall meet all original equipment manufacturer (OEM) installation requirements.

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 7-8

5. All control valves shall be leak tight across the seal and seat when closed according to the values listed in Table 7-1 section 7.3. Leak rates are measured at room temperatures and maximum working pressure.

6. All wire/cable shall be of type LSZH (low smoke zero halogen) unless fully contained within a metallic enclosure (conduit, fully enclosed cable tray, etc.).

7.5 Pressure Relief Devices

1. Pressure relief devices shall be provided and sized by the Subcontractor to meet the appropriate codes listed in section 3 of this document.

2. Reliefs shall be sized to relieve pressure in situation including but not limited to, trapped volume, etc.

3. The Subcontractor shall provide sizing calculation per applicable codes and documentation indicating the maker and model of each relief device for FRA approval.

4. Relief sizing and placement shall be discussed with FRA during the design reviews to ensure all relieving scenarios are considered before manufacturing and the procurement of relief valves can take place. The final selection is subject to written FRA approval.

5. The pressure shall be set in gauge pressure.

6. All valves shall be leak tight across the seal and seat when closed according to the values listed in Table 7-1 section 7.3. Leak rates are measured at room temperatures and maximum working pressure.

7.6 Pressure Sensors

1. Pressure sensing lines shall use a conduit to room temperature.

2. To minimize conduction heat load of the conduits, the length of the tube containing the wires of each sensor shall be at least 3 ft 3 inch (1 meter) long.

3. The Subcontractor shall provide pressure transducers for connection to the external pressure sensing lines. The choice of sensors shall be submitted to FRA for approval.

4. Transducers shall have a 0.5 % accuracy over the full range or better.

5. Transducers shall have a long-term stability of 0.25 % in 1 year or better.

6. Transducers shall have a 24 VDC excitation, a 2-wire design and a 4-20 mA output.

7. Transducers shall have isolation and calibration/purge valves.

8. Transducers shall be stainless steel.

9. Any differential pressure transmitter shall be equipped with appropriate isolation, equalization manifold, and purge valves.

7.7 Materials

1. All materials used in the Argon Distribution Uninsulated Pipes and Valves shall be new and engineered for the operating parameters.

2. Milled steel components shall be protected against corrosion.

Scope of Work and Performance Specification Interface Requirements

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 8-9

3. Any materials or components used in a pressure vessel shall meet all requirements of ASME BPVC per section 3 of this document.

4. Any materials used in pressure containing piping shall conform to the piping code for appropriate fluid service category.

5. All fittings, bends, miters, laps, and branch connections shall conform to the piping code requirements for appropriate fluid service category.

6. Any flanges and blanks shall conform to the piping code requirements for appropriate fluid service category.

7. Material test reports shall be provided for all pressure containing components, parts welded directly to a pressure containing part, and main supports.

8. The Subcontractor shall identify any plastic or polymer-based components and any low thermal conductivity materials planning to use. They are subject to FRA approval.

9. Bi-metallic transition joints, if required, shall be capable of withstanding at least 7,000 thermal cycles without loss of vacuum and mechanical integrity subject to FRA approval.

8 Interface Requirements

8.1 General Interface Requirements

The approximate locations of the supply interfaces with LBNF’s cryogenics systems are shown in Figure 8-1. Details of the interfaces are presented in Appendix C.

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 8-10

Figure 8-1: Top View of the LBNF cryogenics systems layout

The supply connects the various cryogenics subsystems at LBNF; the precise connections between these systems are shown in the Argon Distribution Interface Matrix, which is included in Appendix C.

In each case, the precise interface shall be as described in the interface table in Appendix C. This document includes the flow rates, temperatures, and pressures at each interface, and further specifies the responsibilities of both the Subcontractor and FRA with respect to what is provided, by whom, and which party makes the final connection between the supply and each cryogenics subsystem. The document also lists the suggested pipe accessories (elbows, reducers, etc.), required valves, and instrumentation on each line, its envelope size, and other pertinent factors that the Subcontractor may consider during engineering.

Within the CUC, the supply interfaces with the shared GAr Purification system for cryostats 1 and 2, and the vents. For each of these, the interface window within which the supply connects to the cryogenics subsystems are given in Appendix C.

Within the Detector Caverns, the supply interfaces with the Condensers, and vents. The locations of these windows are also given in Appendix C.

Further requirements for the supply interfaces include:

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

1. Main lines 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.

2. Facility electric power for the supply shall be provided by an FRA electric feed. FRA will provide electrical power for equipment use.

3. Facility compressed air for the operation of pneumatic valves/etc. shall be provided by FRA.

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

5. 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.

6. 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.

7. The PLCs (and associated cabinets) shall be provided by FRA, with input into their design from the Subcontractor as necessary.

8. The Subcontractor shall provide a list of variables and their addresses (i.e., data blocks) for integration with the SCADA system.

9. A summary of the on-site environmental conditions is shown in Table 8-2 below.

10. A summary of requirements and available utilities is available in sections 1.6 and 1.8 of J-6

Section 0100010 General Requirements.

Table 8-1: The environmental conditions for SURF CUC and Detector Caverns

Parameters Units CUC and Detector Cavern

Indoor Temperature (Min/Max) ºF (K) ºC 67 (292.6) 19.4 / 85 (302.6) 29.4

Atmospheric Pressure psi(a)/ bar(a) 14.6 / 1.007

Relative Humidity (Min/Max) % 15/85

Dew Point (summer/winter) ºF (K) ºC Maximum dew point of 48 (282) 9

Scope of Work and Performance Specification Manufacturing, Installation, and Assembly Requirements

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

9 Manufacturing, Installation, and Assembly Requirements

9.1 Manufacturing

The Subcontractor shall supply a Manufacturing and Inspection Plan (MIP) outlining the steps and details, which will be subject to FRA written approval at the time of the Production Readiness Review (PRR) or earlier.

9.2 Labeling

1. All piping, valves, instruments, and wiring shall be labeled in a permanent way in accordance with correlating drawings developed as part of this subcontract.

2. The Subcontractor shall provide drawings of the label and materials that will be used for labeling. The layout and materials are subject to FRA approval.

3. A nameplate displaying the overall weight of each device shall be mounted on its body.

4. The approximate center of gravity of the device shall be displayed for lifting and rigging purposes.

9.3 Welding

1. All weld joint preparation and welding techniques shall be performed in accordance with the applicable codes.

2. Vacuum jacket welding shall be performed in a manner equivalent to a standard welding procedure specified and qualified under the rules of the applicable codes.

3. The Subcontractor shall provide (prior to the fabrication) the Procedure Qualification Record

(PQR) for each Welding Procedure Specification (WPS) as required by the applicable codes.

4. The Subcontractor shall provide (prior to the final shipment) the Welder Performance

Qualifications (WPQs) for each welder as required by the applicable codes.

5. The Subcontractor shall supply weld maps which identify each weld and name of welder performing the weld. If applicable, the weld maps shall identify the welds, which were used for inspection.

6. All welding performed on the cryogenic process piping circuits shall be done by the Gas Tungsten Arc Weld (GTAW) process, using welding quality argon gas for the inert shield.

7. All welds shall be internally purged with welding quality argon gas during the time of welding and post-welding treatment.

8. Welds that show evidence of a lack of purge shall not be accepted.

9. All welding shall be performed in such a manner that the weld surface is smooth and free of irregularities. No visible metal chips or foreign material may be detectable inside any component. All external surfaces in the weld area shall be cleaned of heat tint, slag, and other deposits. No mechanical process shall be used to achieve a smooth appearance.

Scope of Work and Performance Specification Manufacturing, Installation, and Assembly Requirements

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

10. No production welding shall be performed until all WPS, PQR, and WPQ documents have been qualified in accordance with the applicable codes.

11. If possible, longitudinal welds shall be avoided in tubes and pipes.

9.4 Tube and Pipe Bending

1. Tube and pipe bending shall be performed in accordance with good machine shop practices and piping codes.

2. All bends shall be free of kinks, cuts, and abrasions.

3. Tubes and pipes shall remain circular after bending to within code requirements.

4. The Subcontractor may substitute tube bends for fittings where desirable, provided that mechanical strength is not compromised.

9.5 Cleaning

1. A cleanliness Quality Assurance plan shall be submitted by the Subcontractor outlining measures taken by the Subcontractor to ensure cleanliness during manufacturing. This document is subject to written FRA approval.

2. Each component and subassembly shall be thoroughly cleaned at every stage of all scale, spatter, flux, foreign materials, etc. All scale, flux, lubricants, or any foreign materials shall be cleaned per the approved Subcontractor Cleanliness Quality Assurance Plan.

3. Cleaning agents shall be suitable for the materials of construction and shall be neutralized if necessary.

4. Weld spatter shall be removed by wire brushing using stainless steel brushes.

5. Each assembly shall be cleaned such that all surfaces are free of grease, flux, moisture, dirt, and other foreign materials by vapor degreasing or suitable wash. Surfaces shall be visibly inspected and wiped down with a white cloth. In order to be considered free of contamination, no discoloration shall appear on the white cloth.

6. After cleaning, each section shall be blown dry with clean dry air until no visual moisture remains.

9.6 Installation

1. Assigned working areas at SURF shall not be exceeded without agreement by FRA. Storage of

Subcontractor supplies, material, or equipment shall be limited to the assigned work areas listed in the 3D model in Appendix B. The Subcontractor shall supply any and all necessary fences and signs.

2. Access to the work area is in accordance with SURF site and underground access described in J-6 Section 010010 FRA General Requirements.

Scope of Work and Performance Specification Shipping

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 10-14

10 Shipping

1. The Subcontractor shall provide at least 14 calendar days of notice prior to each shipment.

2. The supply sub-components shall be carefully packed for transport in accordance with industry standards. The Subcontractor shall take all appropriate precautions necessary to avoid damage to equipment or interference of any kind to other Subcontractors or users working on site.

3. Accelerometers with logging capabilities shall be supplied and mounted prior to shipment and inspected after each transport and handling up to the final positioning of each item. The peak value shall not exceed 4 g.

4. All openings shall be sealed against the penetrations of moisture, dirt, or air with appropriate plastic caps or blind flanges.

5. All items shall be crated or boxed to be readily handled with a forklift truck and shall have suitable lifting attachments for use of an overhead crane.

6. Each crate shall be clearly marked indicating contents, contract number, and gross weight. In addition, the following features shall be incorporated in the design of each crate:

d) Full enclosure on all sides.

e) Sufficient interior restraint to prevent the components from shifting within each crate.

f) Vacuum insulated components shall be supported only on the exterior surfaces of the vacuum vessels.

g) Appropriate and clearly marked exterior features to allow tie down during transport and lifting by means of both a crane and a forklift.

h) Protection from prolonged exposure to the weather without corrosion or other damage to their content.

i) Clear and obvious labels in English and language of point of origin indicating the presence of fragile contents.

j) Labels warning against tipping the crate from its normal position or stacking any items on top of the crate.

k) Extra interior space and restraints for any miscellaneous hardware (mounting jacks, etc.).

l) Any welds used in the construction of the shipping crate shall conform to welding codes.

a) Woods products used in the construction of the shipping crate shall comply with International Standard for Phytosanitary Measures as applicable.

7. The following inspections shall be performed upon arrival:

b) Transport acceleration according to section 11.11.

a) FRA incoming inspection (at SURF) according to section 11.13.

Scope of Work and Performance Specification Examinations, Inspections, Tests

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 11-15

11 Examinations, Inspections, Tests

11.1 General

The supply shall be shop tested in the presence of FRA or its representatives to ensure that operational performance, code, and other safety requirements are met. A shop test report for each major subsystem shall be provided by the Subcontractor to FRA. Acceptance tests for the supply shall be conducted in situ.

In addition to those required by the chosen applicable codes and standards, FRA specific control points shall also be included during the manufacturing and installation. They shall be included in the corresponding Manufacturing and Inspection Plan. Every specific inspection or control shall be covered by a dedicated procedure (to be submitted to FRA for acceptance at the occasion of the reviews meetings).

In the case of a non-conformity during manufacturing or installation, the non-conformity shall be documented with the condition, the requirement not being met and the disposition. For dispositions of “Use-As-Is” and “Repair”, the non-conformity report shall be submitted to FRA for approval prior to implementation. FRA shall be given five (5) working days to grant its approval or disapproval. Items that have been dispositioned “Rework” and “Repair” shall be re-inspected after the disposition is complete and the documentation of this inspection shall be recorded on the non-conformity report. The completed non-conformity reports shall be submitted to FRA as deliverables.

The Subcontractor shall ensure a close oversight of the entire manufacturing process, including all work performed by sub-subcontractors. This monitoring shall include Notification Points and Hold Points.

A Notification Point (NP) is a milestone where the Subcontractor is required to notify FRA that it has completed a specific task or a specific deliverable and is proceeding to the next task or to the next action on the specific deliverable. A NP is meant to enable FRA personnel to follow the progress of the contract and possibly to witness a critical manufacturing step at the Subcontractor’s premises. The Notification shall be sent by the Subcontractor to FRA at least ten (10) working days prior to the scheduled manufacturing step. FRA shall then decide the further action for the notification. A NP shall not affect the production flow of the Subcontractor that may continue the work even without a reply from FRA.

A Hold Point (HP) is a milestone where the Subcontractor is required to notify FRA of the impending completion of a specific task or a specific deliverable and shall stop the associated processes until a written authorization is issued. Such authorization shall be issued on the basis of clearly identified Quality Control, data and acceptance criteria with associated testing witnessed by FRA if deemed necessary. FRA shall have a maximum of ten (10) working days thereafter to review the Subcontractor’s data. In case of clearance, the Subcontractor shall resume its activity. In case of rejection, the Subcontractor shall develop a recovery plan that shall be submitted and reviewed by FRA within ten (10) working days of submission. In case of objection, FRA shall detail its reasons in writing and the Subcontractor shall have ten working days to answer FRA objection and, whenever suitable, develop a recovery plan. The Subcontractor shall notify FRA at least ten (10) working days prior to the execution of any testing associated with a Hold Point.

Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US 11-16

The list of NP and HP to be implemented during the various phases of the execution of the system…