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ASME A112.14.4-2022/CSA B481.5:22 Grease Removal Devices, 2022
- ASME A112.14.3-2022/CSA B481.1:22, Hydromechanical grease interceptors
- Revision History
- Standards Update Service
- ASME A112 Standards Committee on Plumbing Materials and Equipment
- ASME A112.14.3 Project Team on Grease Interceptors
- CSA Technical Committee on Drains and Interceptors
- ASME/CSA Harmonization Task Group on Drains and Interceptors
- Preface
- 1 Scope [Go to Page]
- 1.1 Inclusions
- 1.2 Exclusions
- 1.3 Terminology
- 1.4 Units of measure
- 1.5 U.S. gallons
- 1.6 Alternatives
- 2 Reference publications
- 3 Definitions and abbreviations [Go to Page]
- 3.1 Definitions
- 3.2 Abbreviations
- 4 Material requirements [Go to Page]
- 4.1 General
- 4.2 Optional material specifications
- 5 Construction requirements [Go to Page]
- 5.1 General
- 5.2 Flow control devices [Go to Page]
- 5.2.1 Rating
- 5.2.2 Flow controls and/or vents
- 5.3 Fasteners [Go to Page]
- 5.3.1 Threaded fasteners
- 5.3.2 Fasteners for corrosion-resistant grease interceptors
- 6 Test methods and performance requirements [Go to Page]
- 6.1 Loading test for covers [Go to Page]
- 6.1.1 Load classification
- 6.1.2 Test equipment
- 6.1.3 Test method
- 6.1.4 Load at failure
- 6.1.5 Calculation of maximum safe live load
- 6.1.6 Cover load rating
- 6.2 Leakage requirements [Go to Page]
- 6.2.1 Functional leakage requirements
- 6.2.2 Hydrostatic pressure test
- 6.3 Rating test [Go to Page]
- 6.3.1 Construction of test equipment
- 6.3.2 Installation of testing equipment — Direct connection test types A, B, and C (see Figures and )
- 6.3.3 Installation of testing equipment — Indirect connection test types D
- 6.3.4 Installation of testing equipment — Interceptors larger than 378 L/min (100 gpm) types A, B, and C (see Figure )
- 6.3.5 Installation of testing equipment — Interceptors larger than 378 L/min (100 gpm) type D (see Figure )
- 6.3.6 Preliminary test procedure
- 6.3.7 Rating test
- 6.3.8 Skimming
- 6.3.9 Grease interceptor rating test reporting form
- 6.4 Corrosion test [Go to Page]
- 6.4.1 General
- 6.4.2 Test method
- 6.4.3 Pass/fail criteria
- 6.4.4 Scale specimens
- 6.5 Chemical and corrosion resistant grease interceptors
- 7 Marking and literature [Go to Page]
- 7.1 Required markings
- 7.2 Optional markings
- 7.3 Marking quality
- 7.4 Permanent markings
- 7.5 Cover marking
- 7.6 Installation instructions
- 7.7 Maintenance and cleaning instructions
- 8 Sizing, location, and installation of grease interceptors [Go to Page]
- 8.1 Prohibited fixtures
- 8.2 Sizing [Go to Page]
- 8.2.1 Sizing determination
- 8.2.2 Sizing considerations
- 8.2.3 Size symbols
- 8.3 Sizing calculations [Go to Page]
- 8.3.1 Process
- 8.3.2 Sizing by fixture volume
- 8.3.3 Fixtures to be connected to grease interceptors
- 8.3.4 Interceptor sizing based on discharge flow rate
- 8.3.5 Multiple fixtures
- 8.3.6 Sizing by pipe capacity
- 8.4 Location [Go to Page]
- 8.4.1 Location considerations
- 8.4.2 Clearance and access considerations
- 8.5 Installation [Go to Page]
- 8.5.1 Types of installations
- 8.5.2 Prohibited fixtures
- 8.5.3 Waste line venting
- 8.5.4 Alternate installations
- Annex A (informative) Additional considerations
- Annex B (informative) Principles of operation of grease interceptors
- Annex C (informative) Grease interceptor rating
- Annex D (informative) Material specifications for mild steel, thermoplastics, fibreglass, and concrete
- Annex E (informative) Chemical and corrosion resistance
- Annex F (informative) Selection of grease interceptors — Additional information
- Annex G (informative) Maintenance of grease interceptors
- Annex H (informative) Best management practices for liquid waste
- Annex I (informative) Service monitoring log [Go to Page]
