62-762.601. Release Detection Requirements for Shop Fabricated Storage Tanks  


Effective on Wednesday, January 11, 2017
  • 1(1) General requirements.

    4(a) Storage tank systems shall have a method or combination of methods of release detection that can detect a new release from any portion of the storage tank system.

    33(b) Any storage tank system without a method, or combination of methods, of release detection in accordance with this section, shall immediately provide a method of release detection, or immediately empty the storage tank system and place the affected system out-of-service 74in 75accordance with subsection 7862-762.801(2), 79F.A.C.

    80(c) Any component of a storage tank system with an interstice shall have a method of interstitial monitoring which shall be conducted in accordance with this section. Interstitial monitoring can be performed with vacuum, pressure, hydrostatic (liquid-level sensing), sensors or probes, or visual release detection methods.

    126(d) Except as otherwise specified in this Rule, the release detection method or combination of methods used at a facility shall be performed at least once every calendar month, but not exceeding 35 days, to determine if a release from the storage tank system has occurred.

    172(e) 173Visual inspections. At least once a month, but not exceeding 35 days, every component of a storage tank system that contains, transfers, or stores, or is designed to contain, transfer, or store regulated substances that can be inspected visually shall be visually inspected and documented as to its condition pursuant to Rule 22562-762.711, 226F.A.C. Any visual inspection of a storage tank system that reveals 237uncontrolled pitting corrosion, 240structural damage, leakage, or other similar problems is considered a positive response. The positive response shall be recorded as part of the release detection records, and reported and investigated as an incident pursuant to Rule 27562-762.431, 276F.A.C. Repairs shall be made in accordance with Rule 28562-762.701, 286F.A.C. A monthly visual inspection is not required for any system component using an electronic release detection method; however, piping and dispenser sumps that use an electronic release detection method must also be visually inspected every six months and records kept of the visual inspection.

    331(f) 332Electronic and mechanical release detection devices shall be:

    3401. Installed, calibrated, operated, and maintained in accordance with the manufacturer’s instructions, and shall be designed and installed to provide service checks for operability to ensure that the device is functioning in accordance with subsection 37562-762.701(4), 376F.A.C.; and,

    3782. Registered in accordance with subsection 38462-762.851(2), 385F.A.C., except that controllers or annunciators that are used to display leak detection test results are not required to be registered406.

    407(g) 408Electronic release detection devices shall be inspected for proper operation at least once every calendar month, but not exceeding 35 days. A record or summary of the alarm history, sensor status, and testing results related to suspected releases shall be printed from any electronic release detection device. If the release detection system is not capable of printing records, a manual log shall be maintained of the alarm history, sensor status, and testing results481.

    482(h) 483Release detection shall be constructed and installed so that groundwater, rainfall, or soil moisture will not render the release detection method used inoperable506.

    507(i) 508Storage tank systems containing high viscosity product are exempt from all release detection requirements except for visual inspections526.

    527(2) Storage tanks with secondary containment.

    533(a) One or more of the following release detection methods shall be used:

    5461. 547Liquid level monitoring systems with electronic hydrostatic sensors. These methods shall be able to detect incidents by determining changes in liquid levels within the interstice and monitoring reservoir, and to provide immediate electronic notification with an audible or visual alarm to the owner or operator if liquid levels cannot be maintained. Any alarm that indicates that liquid levels are not being maintained is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 62662-762.431, 627F.A.C.

    6282. 629Vacuum monitoring. This method shall be able to detect incidents by determining changes in vacuum levels within the interstice by continuous monitoring of vacuum levels and to provide immediate electronic notification with an audible or visual alarm to the owner or operator if vacuum levels can not be maintained. Any alarm that indicates that vacuum levels are not being maintained is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 70662-762.431, 707F.A.C.

    7083. Pressure monitoring. This method shall be able to detect incidents by using an inert gas and determining changes in pressure levels within the interstice by continuous monitoring of pressure levels and to provide immediate electronic notification with an audible or visual alarm to the owner or operator if pressure levels can not be maintained. Any alarm that indicates that pressure levels are not being maintained is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 79162-762.431, 792F.A.C.

    7934. Electronic sensors in a normally dry interstice. This method shall be able to detect the presence of liquid in the interstice or monitoring low point and to provide immediate electronic notification with an audible or visual alarm to the owner or operator if liquid is detected. Any alarm that indicates the presence of liquid is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 86562-762.431, 866F.A.C.

    8675. Visually inspected liquid level monitoring systems. This method shall be able to detect incidents by determining changes in liquid levels within the interstice and monitoring resevoir. Any visual observation that indicates that liquid levels are not being maintained is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 92362-762.431, 924F.A.C.

    9256. Visually inspected vacuum or pressure monitoring with gauges. This method shall be able to detect incidents by determining changes in vacuum or pressure levels within the interstice.

    953a. Pressure readings shall be able to detect a 50 percent change from one month to the next, or any change in pressure exceeding 50 percent of the initial level or of a pressure level that is reestablished at the time of an incident investigation or annual testing of the gauge, and for vacuum systems, any complete loss of vacuum or positive pressure reading. Vacuum or pressure refreshment must be performed in accordance with manufacturer’s specifications and the system’s equipment registration in subsection 103662-762.851(2), 1037F.A.C. Any change indicated above is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 105962-762.431, 1060F.A.C.

    1061b. Liquid-filled gauges shall be calibrated using the 1069National Institute of Standards and Technology (NIST) 1076traceable standards, 1078hereby adopted and incorporated by reference, 1084prior to initial operation. Information on NIST can be obtained from 1095100 Bureau Drive, Stop 1070, Gaithersburg, Maryland 20899-1070, (301)975-6478, or at http://www.nist.gov/index.html1107. The gauges shall be operational at all times.

    11167. Visual monitoring of normally dry interstices. This method shall be able to detect the presence of liquid at a low point of the interstice. 1141Any presence of water, other than condensate, or regulated substances in the interstice is considered a positive response. The positive response shall be recorded as part of the release detection records and reported and investigated as an incident pursuant to Rule 118262-762.431, 1183F.A.C.

    11848. Visual monitoring of dike fields. This method shall be able to detect the presence of liquid at a low point in the dike field. The accumulation of water or condensation in the low point of the dike field shall not interfere with the ability to detect regulated substances. Any release of regulated substance in the dike field is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 125962-762.431, 1260F.A.C.

    1261(3) Storage tanks without secondary containment.

    1267(a) Required release detection methods. Storage tanks that are exempt from secondary containment shall have monthly visual inspections performed in accordance with paragraph 129062-762.601(1)(e), 1291F.A.C.

    1292(b) Performance Requirements. Visual inspections of storage tanks shall include an inspection of the exterior of each tank, the integral piping, and any oth1316er storage tank system components.

    1321(4) Small diameter integral piping with secondary containment.

    1329(a) One or more of the applicable release detection methods in subsection 134162-762.601(2), 1342F.A.C., shall be used.

    1346(b) In addition, 1349pressurized small diameter integral piping in contact with the soil shall be equipped with a release detection system that can detect a leak within one hour. One of the following methods shall be used:

    13831. Mechanical line leak detectors. Mechanical line leak detectors shall be capable of detecting a discharge of 3.0 gallons per hour (gph) with a probability of detection of 0.95, and a probability of false alarm of 0.05 at an equivalent line pressure of 10 pounds per square inch (psi) and restrict flow within one hour. Any instance where the mechanical line leak detector is restricting flow is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 146662-762.431, 1467F.A.C.

    14682. Electronic line leak detectors. Electronic line leak detectors shall be capable of detecting a discharge of 3.0 gph with a probability of detection of 0.95, and a probability of false alarm of 0.05 at an equivalent line pressure of 10 psi and shut off power to the pump. Any instance where the electronic line leak detector has shut off power to the pump is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 154962-762.431, 1550F.A.C.

    15513. Electronic interstitial monitoring devices. Storage tank systems without line leak detectors, shall have electronic interstitial monitoring devices that are capable of detecting a release of 10 gallons within one hour and shutting off the pump. Any instance where the monitoring device has shut off the pump is considered a positive response and shall be reported and investigated as an incident pursuant to Rule 161562-762.431, 1616F.A.C.

    1617(5) Bulk product piping and hydrant piping with secondary containment associated with shop fabricated storage tank systems shall meet the requirements of subsection 62-762.602(5), F.A.C.

    1642(6) Bulk product and hydrant piping without secondary containment associated with shop fabricated storage tank systems shall meet the requirements of subsection 62-762.602(6), F.A.C.

    1666(7) Annual operability testing of release detection systems. All release detection devices shall be tested annually at intervals not exceeding 12 months to ensure proper operation. The test must either simulate an actual alarm condition or shall be conducted according to manufacturer’s specifications, and shall include, at a minimum, a determination of whether the device operates as designed. Remote testing of the system can be performed by the manufacturer if the remote test is included in the third-party certification by a Nationally Recognized Testing Laboratory.

    1751(8) Records shall be kept for three years 1759generated on or after 1763January 11, 20171766. R1768ecords generated before 1771January 11, 2017, 1774are required to be kept for two years, 1782in accordance with Rule 178662-762.711, 1787F.A.C.

    1788Rulemaking Authority 1790376.303 FS. 1792Law Implemented 1794376.303 FS. 1796History–New 6-21-04, Amended 1-11-17.

     

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