SPS System Modification Reference Drawings.pdf

This document is a technical instruction sheet for modifications to a Reverse Osmosis (RO) and Deionized (DI) water system as part of an SPS Project, dated December 9, 2025.

The modifications require the following work: cutting out existing DI supply and return lines and adding 90-degree elbows to redirect DI water supply and return lines to the lab only; connecting the RO return to the DI supply side of the SPS loop where the RO main branch is replaced with 2-inch piping per the Statement of Work (SOW); connecting the new 2-inch DI main branch return to the RO return; leaving the existing 1.25-inch DI critical loop in the interstitial space intact with 3/4-inch sink branch line tees, then re-attaching these lines; and reconnecting the lab side back to DI water supply using 90-degree elbows. Additionally, the 1.25-inch loop in the interstitial must be upgraded to the same 2-inch size as the RO loop, including a section where the DI loop drops in one location. Existing sink lines must be connected back to the new 2-inch main loop. The document includes annotated photographs showing the current piping configuration, connection points, and the specific areas requiring modification to facilitate the system reconfiguration.