米国｜非道路車両の空調用用途におけるHFO-1234yf（R-1234yf）の許容内容を定める規則案
R-1234yfの使用が許容される条件設定へ
2021年12月06日、米国環境保護庁（EPA）は、非道路車両（ノンロード車・オフロード車）の空調用用途において、使用条件を満たすことを条件に許容できる内容を定める規則案を公表し、意見募集を開始しました。意見募集期限は、2022年01月20日までとなっています。
同規則案は重要新規代替物質政策プログラム（SNAP）のもとで検討されるものとなります。
規則案の内容
対象箇所：40 CFR Part 82「成層圏オゾンの保護」
Subpart G—Significant New Alternatives Policy Program
Appendix B to Subpart G of Part 82—Substitutes Subject to Use Restrictions and Unacceptable Substitutes
| Application | Substitute | Decision | Conditions | Comments |
| CFC-12 Automobile Motor Vehicle Air Conditioning (New equipment in passenger cars and light-duty trucks only) | HFO-1234yf as a substitute for CFC-12 | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844 3 4 5). For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844. (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739 2 4 5. Manufacturers must keep the FMEA on file for at least three years from the date of creation | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS. Reg. No. 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. Refrigerant containers of HFO-1234yf for use in professional servicing are from 5 lbs. (2.3 L) to 50 lbs. (23 L) in size. Requirements for handling, storage, and transportation of compressed gases apply to this refrigerant, such as regulations of the Occupational Safety and Health Administration at29 CFR 1910.101and the Department of Transportation’s requirements at49 CFR 171-179. |
| Requirements for handling, storage, and transportation of compressed gases apply to this refrigerant, such as regulations of the Occupational Safety and Health Administration at29 CFR 1910.101and the Department of Transportation’s requirements at49 CFR 171-179. | ||||
| Motor vehicle air conditioning (newly manufactured medium-duty passenger vehicles) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844 | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS. Reg. No. 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation | ||||
| Motor vehicle air conditioning (newly manufactured heavy-duty pickup trucks) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844 | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS No 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation | ||||
| Motor vehicle air conditioning (newly manufactured complete heavy-duty vans only) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844 | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS No 754-12-1). HFO-1234yf is acceptable for complete heavy-duty vans. Complete heavy-duty vans are not altered by a secondary or tertiary manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation | Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. | |||
| Motor vehicle air conditioning (newly manufactured nonroad agricultural tractors with greater than 40 horsepower) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844 | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS No 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation | ||||
| Motor vehicle air conditioning (newly manufactured nonroad self-propelled agricultural machinery) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844 | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS No 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation | ||||
| Motor vehicle air conditioning (newly manufactured nonroad compact equipment) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844) | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS No 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act (80 FR 37166, June 30, 2015), commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation | ||||
| Motor vehicle air conditioning (newly manufactured nonroad construction, forestry, and mining equipment) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844 | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS No 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation | ||||
| Motor vehicle air conditioning (newly manufactured nonroad commercial utility vehicles) | HFO-1234yf | Acceptable subject to use conditions | As of [30 days after publication of final rule]: (1) HFO-1234yf MVAC systems must adhere to all of the safety requirements of SAE J639,1 4 5including requirements for a flammable refrigerant warning label, high-pressure compressor cutoff switch and pressure relief devices, and unique fittings. For connections with refrigerant containers for use in professional servicing, use fittings must be consistent with SAE J2844.3 4 5For connections with small refrigerant cans for consumer or professional use, use fittings must have a diameter of 0.5 inches, a thread pitch of 16 thread per inch, and a left thread direction, consistent with SAE J2844 | Additional training for service technicians recommended. HFO-1234yf is also known as 2,3,3,3-tetrafluoro-prop-1-ene (CAS No 754-12-1). Consistent with EPA’s Significant New Use Rule for HFO-1234yf under the Toxic Substances Control Act, commercial users or consumers can only recharge MVAC systems with HFO-1234yf where the original charging of the system with HFO-1234yf was done by the original equipment manufacturer. |
| (2) Manufacturers must conduct Failure Mode and Effect Analysis (FMEA) as provided in SAE J1739.2 4 5Manufacturers must keep the FMEA on file for at least three years from the date of creation |
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