DCF - TCSPD _ Technology Cooling System Pipe Distribution - workstream - (2026-07-16)

New to the Open Compute Project? Watch “OCP 101: How to Participate in the Open Compute Project” to learn how the community works — and join our mailing list, linked in the 101 video, to stay involved:    • OCP 101: How to Participate in the Open Co...   This working-group call covered progress on the modular Technology Cooling System (TCS) pipe distribution white paper, opening with a discussion of the cost of schedule delay (roughly $300M per week on a 100MW project) and the value of modular off-site fabrication, LOD400 construction, digital twins, and AI-driven project modeling. The group reviewed pipe sizing for AI training and inference racks (up to 340kW using DN50/2-inch drops, with 4-inch splitters for higher densities up to 1MW), debated whether CDUs can replace traditional flushing rigs for pre-commissioning cleaning, and discussed air removal, degassing, filtration strategies, and 'dusty but not dirty' component delivery cleanliness. Presenters demonstrated a simplified rack/pipe sizing tool and invited members to contribute edits to the white paper (especially the filtration/air-separation appendix) or propose partnered work streams for technical cleanliness. Open questions remain on standardized cleanliness targets, dissolved oxygen limits, CDU heat-exchanger fouling risk, and IT-rack connection standards for densities above 340kW. Chapters: 0:00 Sound check and agenda 14:59 Cost of schedule delay 29:53 Digital twins and AI modeling 42:23 Pipe sizing to one megawatt 48:52 IT rack connections and drops 56:09 CDU vs flushing rig commissioning 1:10:33 Air removal and degassing 1:28:02 Dusty not dirty cleanliness 1:36:20 Branch line and cleanliness white papers 1:44:40 Rack sizing tool demo