NSF/ANSI 3 applies to commercial dishwashing, glasswashing, and pot‑washing machines that use spray systems and hot water or chemical sanitizing solutions. The standard establishes minimum requirements for material safety, design, construction, and product performance to ensure good sanitation.
Every NSFS 347 work order requires:
is the leading consensus standard used by architects, builders, and manufacturers to objectively evaluate and certify the environmental and social impacts of commercial roofing systems over their entire life cycle. Developed jointly by NSF International and the Chemical Fabric and Film Association (CFFA) , this comprehensive standard eliminates "greenwashing" by providing a strict, third-party verified point system for materials like TPO, PVC, and EPDM.
2. National Standards for Sustainable Drainage Systems (NSfS) nsfs 347 work
The standard applies to all major single-ply roofing formulations, including: (Polyvinyl Chloride) TPO (Thermoplastic Polyolefin) EPDM (Ethylene Propylene Diene Terpolymer) KEE (Ketone Ethylene Ester) How the Scoring System Works
[Material Selection via NSF 347] ➔ [Hydrological Site Design (NSfS)] ➔ [Submission of Drainage Statements] ➔ [Whole-Life Maintenance Planning] Step 1: Source Certified Materials
However, the fundamental principle remains: , because the structures and systems it builds often protect lives in the most demanding environments. Developed jointly by NSF International and the Chemical
Grading rubric (applies to Case D): clarity of diagnosis (20%), feasibility and costs (20%), stakeholder analysis and ethical considerations (20%), quality and realism of implementation plan (25%), risk mitigation and measurement (15%).
provides a comprehensive framework for evaluating the environmental and social impacts of roofing membranes (such as PVC, TPO, and EPDM) across their entire life cycle. It is the first standard of its kind to address the building envelope. 1. Core Evaluation Pillars
The standard uses a point-based system, assigning scores across five core categories that define a product's sustainability: Grading rubric (applies to Case D): clarity of
Identify the chemical and mechanical properties of the substrate. Ensure it meets raw material benchmarks before fabrication begins.
Before you pick up a tool or sign a work order, ensure you have the latest version of Clause 347, the correct PPE, and a clear verification plan. When executed correctly, NSFS 347 work turns a generic stockpile of parts into a dependable, life-saving asset.