NSF ANSI 52-2017 pdf free download – Supplemental flooring.
1 General1.1 Purpose
This Standard establishes minimum public health and sanitation requirements for supplemental flooring.Included are requirements for cleanability and durability，and resistance to the use environment,microbiological growth, and vermin.
1.2 Scope
Supplemental flooring covered by this Standard includes, but is not limited to, supplemental flooring for use infood preparation, dry storage, and warewashing areas.
Flooring components and materials covered under other NSF or NSF/ANSI Standards or Criteria shall alsocomply with the requirements therein. This Standard is not intended to restrict new supplemental flooringdesign, provided that such design meets the minimum specifications described herein.
1.3 Alternate materials, design,and construction
While specific materials, design, and construction may be stipulated in this Standard,flooring that incorporatesalternate materials, design, or construction may be acceptable when such flooring meets intent of theapplicable requirements herein.
1.4 Measurement
Decimal and Sl conversions provided parenthetically shall be considered equivalent. Metric conversions andsignificant figure rounding have been made according to lEEE/ASTM SI 10.
2Normative references
The following documents contain provisions that, through reference, constitute provisions of this NSF/ANSIStandard.At the time this Standard was balloted, the editions listed below were valid.All documents aresubject to revision, and parties are encouraged to investigate the possibility of applying the recent editions ofthe documents indicated below.The most recent published edition of the document shall be used for undatedreferences.
ASTM D256 2010.Standard Test Methods for Determining the lzod Pendulum lmpact Resistance of Plastics3ASTMD412-15.Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers – Tension3ASTM D624-00(2012).
Standard Test Method for Tear Strength of Conventional Vulcanized Rubber andThermoplastic Elastomers3
ASTM D638-14.Standard Test Method for Tensile Properties of Plastics3
ASTM D792-13.Standard Test Methods for Density and Specific Gravity(Relative Density) of Plastics byDisplacement3
ASTM G21-2015. Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi?IEEE/ASTM Sl 10 – 2010. American National Standard for Metric Practice2
NSFIANSI 2. Food equipment
NSFIANSI 170.Glossary of food equipment terminology
3Definitions
Terms used in this Standard that have special technical meaning are defined in NSFIANSl 170.
4Materials
4.1 General
Materials shall meet the following requirements and use environment conditions.4.2 Resistance to microorganisms
Supplemental flooring materials shall be resistant to microbial action and shall not contribute to or supportsurvival or growth of microorganisms when tested in accordance with 6.1.
4.3 Resistance to environment
Materials shall be resistant to deterioration when tested in accordance with 6.2 and 6.3.4.3.1 Absorption/adsorption
Supplemental flooring shall not absorb or adsorb water or oil when tested in accordance with 6.2.4.3.2Temperature resistance
Supplemental flooring shall not be detrimentally unstable at use and cleaning temperature ranges when testedin accordance with 6.3.
4.4 Tensile strength
Supplemental flooring shall meet the appropriate performance test requirements of 6.4 for tensile strength andtear resistance.
4.5 Specific gravity
Supplemental flooring shall meet the appropriate performance test requirements of 6.5 for specific gravity.
5 Design and construction5.1 General
Supplemental flooring shall be designed and manufactured to prevent the harborage of vermin and theaccumulation of dust,dirt,splash,or spillage,and to facilitate maintenance，service,and cleaning.Supplemental flooring shall be designed and manufactured so as not to buckle, curl, or warp during use orfollowing cleaning performed in accordance with the manufacturer’s recommendations.NSF ANSI 52 pdf download