A. Specification
Updated
A PDF document (776 KB) attached to PIP-II CM 2K Pressure Safety Device - Rupture Disks, from the Department of Energy. Due Oct 30, 2026, 2:00 PM (UTC-5).
File name: A. Specification ED0049129.pdf
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PIP-II Cryogenic Distribution System
ED0049129 – CM 2K Pressure Safety Device-Rupture Disks
Specification
PIP-II Cryogenic Distribution System
ED0049129 CM 2K Rupture Disks specification
Document Approval
Signatures Required
Date Approved
Originator: William Soyars, CDS engineer
As in Teamcenter
Reviewer: Vrushank Patel, PIP-II L3M for CDS
As in Teamcenter
Reviewer: Alex Martinez, PIP-II CAM for CDS
As in Teamcenter
Reviewer: Matt Luedke, PIP-II Quality Assurance
As in Teamcenter
Reviewer: Jeremy Nudell, PIP-II Project Engineer
As in Teamcenter
Approver: Joe Ozelis PIP-II L2 for SRFCryo
As in Teamcenter
Revision History
Revision
-
Date Released
9/9/2026
Fermi National Accelerator Laboratory
Description
Initial release
PIP-II Cryogenic Distribution System
ED0049129 CM 2K Rupture Disks specification
1.
Introduction and Scope
2.
Acronyms
3.
Cryogenic Rupture Disk technical requirements
4.
Additional technical requirements, information, and clarifications
5.
Labelling
6.
Transportation and handling
7.
Document deliverables
8.
In-coming Quality Check and Acceptance by FNAL
Fermi National Accelerator Laboratory
PIP-II Cryogenic Distribution System
ED0049129 CM 2K Rupture Disks specification
1. Introduction and Scope
1.1.
PIP II Cryomodule (CM) Relief System
1.1.1.
Fermi National Accelerator Laboratory (FERMILAB) located in Batavia, IL is building a next generation proton accelerator called the Proton Improvement Plan II (PIP-II). The PIP-II accelerator (Linac) design is based on superconducting radio frequency (SRF) technology employed in up to twenty-five SRF cryomodules (CM). The linac requires cryogenic helium for operation. Figure 1-1 presents a schematic overview of the PIP-II CM relief system. There are 25 CMs in the accelerator tunnel. The Safety Rupture Disks to protect from overpressure are circled in Figure 1-1.
1.1.2.
The helium process line normally operates at sub-atmospheric conditions, about 30 mbar absolute pressure. Purity of the helium is very important and leaks from atmosphere shall be minimized
Figure 1-1 Schematic of PIP-II Relief system, with Cryomodule Rupture Disks indicated
Fermi National Accelerator Laboratory
PIP-II Cryogenic Distribution System
1.2.
ED0049129 CM 2K Rupture Disks specification
Scope and quantity
1.2.1.
This specification is for cryogenic non-reclosable rupture disks on the Cryomodules (CM) helium bath volume.
1.2.2.
This order will be for thirty-three (33) rupture disk cartridges. 30 are at the higher set pressure and 3 are at the lower set pressure as shown in Table 3-1.
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