Grease removal devices
This is the first edition of ASME A112.14.4/CSA B481.5, Grease removal devices. It supersedes the CSA B481 Series, Grease interceptors, published in 2012, and ASME A112.14.4-2001 (R2017), Grease removal devices.
This Standard was prepared by the ASME/CSA Harmonization Task Group on Interceptors, under the jurisdiction of the ASME A112 Standards Committee on Plumbing Materials and Equipment and the CSA Technical Committee on Drains and Interceptors. The ASME A112 Standards Committee operates under the jurisdiction of the ASME Board on Standardization and Testing and the CSA Technical Committee operates under the jurisdiction of the CSA Strategic Steering Committee on Construction and Civil Infrastructure.
This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.
This Standard was approved as an American National Standard by the American National Standards Institute on May 9, 2022.
This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
This Standard specifies material, design, construction and performance criteria for the testing and rating of grease interceptors equipped with automatic grease removal devices (GRD) and it applies to GRDs designed to automatically remove free-floating fats, oils, and grease (FOG) from sanitary discharges without intervention from the user except for maintenance.
This Standard does not apply to interceptors intended for rainwater, sanitary wastewater, or wastewater containing petroleum products such as gasoline, heating oils, or mineral oils.
In this Standard, shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; should is used to express a recommendation or that which is advised but not required; and may is used to express an option or that which is permissible within the limits of the Standard.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
1.4 Units of measure
The values given in either SI (metric) or U.S. Customary units of measure are equivalent in application; however, each measurement system is to be used independently of the other. In this Standard, U.S. Customary units are shown in parentheses. Combining values from the two measurement systems can result in non-conformance with this Standard.
1.5 U.S. gallons
All references to gallons are to U.S. liquid gallons.
The requirements of this Standard are not intended to prevent the use of alternative designs, materials, or methods of construction, provided such alternatives meet the intent and requirements of this Standard.