SPS System Modification Reference Drawings.pdf

This document is a technical specification and guidance document for the SPS Project, detailing modifications to deionized (DI) water and reverse osmosis (RO) piping systems.

The project requires several key modifications to existing water distribution infrastructure. The primary work involves upgrading the DI critical loop in the interstitial space from 1 1/4" to 2" piping to match the RO loop size, including a section where the DI loop currently drops. The DI supply and return main branch lines must be cut out and reconnected to the lab using 90-degree elbows to redirect DI water supply and return lines exclusively to the lab area. The RO return line must be connected to the DI supply side of the SPS loop where the existing RO main branch is replaced with 2" piping per the Statement of Work (SOW). Additionally, the new DI 2" main branch return must be connected to the RO return line. The 3/4" sink branch lines that T off the interstitial loop must be left in place and reattached after modifications. The existing 1 1/4" DI supply and return lines should remain in service with 90-degree elbows added to reconnect the lab-side piping back to the DI water supply. The document includes annotated photographs showing current conditions and the specific locations where connections, disconnections, and sizing upgrades are required.