Exhibit B3 - WELDING PROCEDURE SPECIFICATION.pdf
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- Attached to
- MI-65 Transfer Piping
- Solicitation number
- ISD-366397-RO
About this file
This document is a Welding Procedure Specification (WPS) from Fermi National Accelerator Laboratory's Technical Division-Machine Shop, detailing the precise welding parameters for a specific welding process. The specification covers technical details for GTAW (Gas Tungsten Arc Welding) on stainless steel materials (SA 213-07a Type 304/304L), including joint design, base metals, filler metals, welding positions, and process characteristics. Key specifications include a V groove-open root joint design, welding in the 6G upward position, using argon gas for shielding and backing, with a preheat temperature of 32°F and interpass temperature of 350°F.
The WPS outlines specific technical requirements such as a single electrode welding technique, initial cleaning with alcohol solvent, multi-pass welding, and using a Dynasty DX #4172 power source with remote foot pedal control. Filler metal specifications include 308/308L class metals with diameters of 0.045" and 1/16", and electrical characteristics of DC current with non-pulsing characteristics. The document includes a warning that the WPS is subject to change and the current version is maintained on the laboratory's technical division website.
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Text version
“WARNING: This WPS is subject to change. The current version is maintained on the TD website: http://www-tdserver1.fnal.gov/tdweb/ms/Policies/Welding/.”
PURGE GAS OXYGEN CONTENT: 25 PPM
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