Data Center Chilled Water Plant Design Review Checklist

This checklist provides a structured, disciplined framework for reviewing the design of a data center chilled water (CHW) plant, from concept and schematic design through issued-for-construction (IFC) documents. It is intended for use by mechanical design engineers, independent design reviewers, commissioning agents (Cx), owner's representatives, and facility operations teams who must confirm that a proposed CHW plant will deliver the reliability, efficiency, and maintainability that a mission-critical facility demands.

The guide is organized by system: chillers, pumps, primary-secondary (and primary-only variable-flow) distribution, plate heat exchangers, free cooling / economization, thermal energy storage, controls, and N+1 redundancy verification. Each chapter combines a pass/fail checklist, a RAG (Red-Amber-Green) risk-rating table for judgment-based items, narrative guidance explaining the "why" behind each check, and, where useful, an FMEA-style failure mode table with Severity × Occurrence × Detection (RPN) scoring.

• Work through each chapter in the order presented during a formal design review milestone (SD, DD, or CD/IFC) - not every item applies at every stage; use judgment on applicability.
• Mark each checkbox item Pass / Fail / N/A and capture the supporting drawing, spec section, or calculation reference in your review log.
• Use the RAG tables to flag items that are technically compliant but carry residual risk - Green items proceed without comment, Amber items require a design team response before sign-off, Red items block progression until resolved.
• The FMEA tables are a starting point, not a substitute for a full site-specific Design FMEA workshop with the mechanical, electrical, and controls disciplines.
• The weighted scoring matrices in each applicable chapter are intended for comparing competing design options (e.g., chiller type, distribution topology) during concept selection.

MEP design engineers, third-party design reviewers, commissioning authorities, data center operations and facilities engineering staff, capacity planning teams, and owner's project managers overseeing new-build or retrofit chilled water plant projects for enterprise, colocation, or hyperscale data centers.

Where this guide references Tier or redundancy expectations, it uses the widely adopted industry convention that Tier III/IV-equivalent facilities require concurrent maintainability and fault tolerance in the CHW plant, typically achieved through N+1 or 2N component and distribution-path redundancy. Reviewers should confirm the project's actual contracted reliability tier and owner-specific design criteria, since these checklists are deliberately tier-agnostic and must be calibrated to the project's Basis of Design.