§ 2636. Design, Construction, Installation, Testing, and Monitoring Requirements for Piping.
23 CA ADC § 2636Barclays Official California Code of Regulations
23 CCR § 2636
§ 2636. Design, Construction, Installation, Testing, and Monitoring Requirements for Piping.
(b) All corrodible underground piping, if in direct contact with backfill material, shall be protected against corrosion. Piping constructed of fiberglass-reinforced plastic, steel with cathodic protection, or steel isolated from direct contact with backfill, fulfills this corrosion protection requirement. Cathodic protection shall meet the requirements of section 2635(a)(2).
(1) Primary piping in contact with hazardous substances under normal operating conditions shall be installed inside a secondary containment system which may be a secondary pipe, vault, or a lined trench. All secondary containment systems shall be sloped so that all releases will flow to a collection sump located at the low point of the underground piping.
(2) Primary piping and secondary containment systems shall be installed in accordance with an industry code of practice developed in accordance with voluntary consensus standards. The owner or operator shall certify that the piping was installed in accordance with the above requirements of section 2635(f). The certification shall be made on the “UST Certification of Installation/ Modification” submittal element in the California Environmental Reporting System or a local reporting portal.
(e) All new primary piping and secondary containments systems shall be tested for tightness after installation in accordance with manufacturer's guidelines. Primary pressurized piping shall be tested for tightness hydrostatically at 150 percent of design operating pressure or pneumatically at 110 percent of design operating pressure. If the calculated test pressure for pressurized piping is less than 40 pounds per square inch, 40 pounds per square inch shall be used as the test pressure. The pressure shall be maintained for a minimum of 30 minutes and all joints shall be soap tested. A failed test, as evidenced by the presence of bubbles, shall require appropriate repairs and retesting. If there are no manufacturer's guidelines, secondary containment systems shall be tested using an applicable method specified in an industry code or engineering standard. Suction piping and gravity flow piping which cannot be isolated from the tank shall be tested after installation in conjunction with an overfilled volumetric tank integrity test or other test method meeting the requirements of section 2643(f), if approved by the local agency.
(1) All secondary containment, including under-dispenser containment, and under-dispenser spill control or containment systems shall be equipped with a continuous monitoring system that either activates an audible and visual alarm or stops the flow of product at the dispenser when it detects a leak.
(2) Automatic line leak detectors shall be installed on underground pressurized piping and shall be capable of detecting a three gallons per hour leak rate at 10 pounds per square inch within one hour with a probability of detection of at least 95 percent and a probability of false alarm no greater than five percent, and shall restrict or shut off the flow of product through the piping when a leak is detected.
(3) Monitoring shall be conducted on all underground pressurized piping with secondary containment at least once every 12 months at a pressure designated by the equipment manufacturer, provided that the method is capable of detecting a minimum release equivalent to 0.1 gallons per hour defined at 150 percent of the normal operating pressure of the product piping system at the test pressure with at least a 95 percent probability of detection and not more than a five percent probability of false alarm.
(A) Underground pressurized piping connected to an emergency generator tank system installed before October 1, 2018, may use a continuous monitoring system as described in paragraph (1) above, which activate an audible and visual alarm in the event of a leak or a malfunction of the monitoring system satisfy the automatic line leak detector requirement of paragraph (2) above. The monitoring system shall be checked at least daily by either remote electronic access or on-site visual inspections. A log of daily checks shall be available for local agency review upon request. By October 13, 2018, all underground pressurized piping connected to an emergency generator tank system shall meet section 2666(f).
(B) Underground pressurized piping connected to an emergency generator tank system installed on or after October 1, 2018, shall be equipped with an automatic line leak detector in accordance with paragraph (2) above. In lieu of restricting or shutting off the flow of product through the piping, the automatic line leak detector may activate an audible and visual alarm when a leak is detected.
(3) A manufacturer of an under-dispenser spill containment or control system may apply to the Division of Water Quality Underground Storage Tank Program Manager for approval of the system. Owners or operators shall not install an under-dispenser spill containment or control system that has not been approved.
Credits
Note: Authority cited: Sections 25299.3 and 25299.7, Health and Safety Code. Reference: Sections 25281, 25284.1, 25291, 25296.35, 25299 and 25404, Health and Safety Code; and 40 CFR §§ 280.10, 280.20, 280.31, 280.40, 280.41, 280.42, 280.43, 280.44 and 280.45.
History
1. New section filed 4-5-94; operative 5-5-94 (Register 94, No. 14).
2. Amendment of subsections (f)-(f)(3) and (g)-(g)(4), new subsections (h)-(h)(3)(C) and amendment of Note filed 5-14-2001; operative 5-14-2001 pursuant to Government Code section 11343.4 (Register 2001, No. 20).
3. Amendment of subsections (f)(2)-(4), new subsections (f)(5)-(6), repealer of subsections (g)-(g)(5), subsection relettering and amendment of newly designated subsections (g)(1)(C) and (g)(3) filed 4-8-2004; operative 5-8-2004 (Register 2004, No. 15).
4. Amendment of subsections (c)(2) and (f)(3) filed 12-18-2007; operative 1-17-2008 (Register 2007, No. 51).
5. Amendment of section and Note filed 10-13-2016; operative 1-1-2017 (Register 2016, No. 42).
6. Amendment of section and Note filed 8-27-2018; operative 10-1-2018 (Register 2018, No. 35).
This database is current through 4/26/24 Register 2024, No. 17.
Cal. Admin. Code tit. 23, § 2636, 23 CA ADC § 2636
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