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§ 4054.1. S. Specifications.

4 CA ADC § 4054.1Barclays Official California Code of Regulations

Barclays California Code of Regulations
Title 4. Business Regulations
Division 9. Division of Measurement Standards, Department of Food and Agriculture
Chapter 2. Special Equipment
Article 2. Procedures for Type Approval Certification Evaluation and Field Compliance Testing of Vapor Recovery Systems
4 CCR § 4054.1
§ 4054.1. S. Specifications.
Currentness
S.1. Systems Components.
Systems governed by this article utilizing motor vehicle fuel nozzles shall contain in each nozzle adequate and automatic means to prevent measured liquid from either recirculating (entering the vapor return line) or overflowing a vehicle fill pipe opening.
S.1.1. Nozzles.
(a) All nozzle types shall have a primary shut-off device which automatically activates when liquid covers the nozzle primary shut-off sensing mechanism.
(b) Balance type nozzles shall have a secondary shut-off device or other effective means to prevent liquid recirculation. Secondary shut-off devices shall automatically activate after liquid has entered the vapor return line because the primary shut-off device has failed. (Typically, secondary shut-off devices are pressure-activated and shut off when liquid in the vapor return line blocks the return of vapors).
(c) Assist type nozzles may have a secondary shut-off device or else some other effective means to avoid liquid overflowing a vehicle fuel tank because the primary shut-off device has failed. “Other effective means” include, but are not limited to, permitting liquid to be seen either by observing the fill pipe opening or hearing and seeing liquid overflow spillage.
S.2. Field compliance test unit.
S.2.1. Use.
The field compliance test unit shall be used to examine the proper operation of:
(a) primary shut-off devices,
(b) secondary shut-off devices, and
(c) inches of H2O column vacuum for assist systems.
S.2.2. Design.
S.2.2.1. Tank.
The test unit shall be a rigid metal vessel 13-inches high and 9-inches in diameter with a liquid capacity of 3 gallons (all measurements approximate).
A commercial-sized, 30 pound Freon recharging tank is typically used.
S.2.2.2. Base support/stand.
The test unit may be supported either:
(a) on a metal base 3/16-inch thick, 6-inches wide, and 17- ½ inches long (all measurements approximate) or,
(b) by a stand which elevates the test unit to accommodate a bottom-inserted ¾ inch ball valve for emptying purposes.
S.2.2.3. Fuel fill pipe.
The test unit shall have a metal fuel fill pipe welded to the tank at a 45 degree angle from horizontal. Placement of the fill pipe is critical. It shall enter the test unit at the middle of the curvature between the top and sides of the vessel so that a specified ullage (vapor space) is created. The fill pipe shall have no internal vent, shall be 2-1/4-inch outside diameter and 10 inches long (both measurements approximate), and shall extend inside the tank no more than ¼ inch. A longitudinal part of the fill pipe near its fill opening shall be cut away in order to observe that the nozzle primary shut-off device sensing mechanism is immersed in liquid. The cut-away is approximately 5 inches long to a depth of ½ the pipe's diameter. The fill pipe shall have transparent flexible tubing slipped over its entire length. The fill opening shall be modified to accommodate nozzle spouts at least 15/16 inch outside diameter (leaded fuel). The test unit shall be airtight when the fill pipe opening is sealed.
S.2.2.4. Other equipment.
A rigid, transparent plastic tube approximately 12 inches long and 3- ⅞ inches inside diameter shall be installed around the fill pipe to contain liquid overflow. A 5/16-inch valve with an outlet to attach a hose shall be installed at the top center of the vessel for obtaining pressure readings. Handles for carrying and emptying the test unit may be attached. All metal parts of the test unit shall be electrically bonded together. Refer to the test unit illustrations in Figure 1.
Image 1 within § 4054.1. S. Specifications.​
S.3. Assist system inches of H2O column vacuum.
Assist vapor recovery systems with booted nozzle spouts that can form a closed seal around the vehicle filler neck shall be designed to operate at not more than -10 inches H2O column vacuum as measured at the nozzle or test unit during a delivery typical of customer usage.

Credits

Note: Authority cited: Sections 12107 and 12500.5, Business and Professions Code; and Sections 41956(a) and 41956(c), Health and Safety Code. Reference: Sections 12107 and 12500.5, Business and Professions Code; and Sections 41956(a) and 41956(c), Health and Safety Code.
History
1. Amendment of subsection S.1. filed 2-22-88; operative 3-23-88 (Register 88, No. 10).
2. Repealer and new section filed 8-1-91; operative 9-2-91 (Register 92, No. 9).
3. Editorial correction of printing error in subsection S.2.2.3 and addition of “S” to 2.2.4 subsection heading (Register 92, No. 34).
4. Amendment of subsection S.3. filed 5-7-97; operative 6-6-97 (Register 97, No. 19).
This database is current through 4/26/24 Register 2024, No. 17.
Cal. Admin. Code tit. 4, § 4054.1, 4 CA ADC § 4054.1
End of Document