Wisconsin Administrative Code
Department of Agriculture, Trade and Consumer Protection
ATCP 90-139 - Trade and Consumer Protection
Chapter ATCP 93 - Flammable, Combustible, And Hazardous Liquids
Subchapter V - General UST Storage and Underground Piping
Section ATCP 93.517 - Airport hydrant system requirements

Universal Citation: WI Admin Code § ATCP 93.517

Current through November 25, 2024

(1) GENERAL.

(a) Airport hydrant system installations shall comply with release reporting, response and investigation, closure, financial responsibility and notification requirements in accordance with this section.

(b) New installations shall meet the plan review requirements in accordance with s. ATCP 93.100.

(2) AIRPORT HYDRANT SYSTEM PLANS AND REQUIREMENTS.

(a) For new airport hydrant systems, leak detection plans shall be submitted to the department before the system becomes operational in accordance with s. ATCP 93.100.

(b) Fuel hydrant leak detection plans shall include all of the following:

1. A description of the airport hydrant system.

2. A description of the leak detection method used.

Note: A designer of an airport hydrant leak detection system who does not have a financial interest in the airport may be considered to be the independent third party that is required in s. ATCP 93.130(3) (b) 1. for leak detection methods.

3. A schedule for testing the system.

4. Any limitations of the leak detection method.

5. An action plan in the event a leak is detected.

(c) Owners and operators of underground piping systems associated with airport hydrant systems shall meet leak detection requirements in accordance with s. ATCP 93.510, or use one or a combination of the following alternative methods of release detection:

1. Perform a semiannual or annual tightness test at or above the piping operating pressure in accordance with the following system volume:

a. Fuel systems with less than 50,000 gallons are not to exceed one gallon per hour for semiannual testing or 0.5 gallons for annual testing.

b. Fuel systems with 50,000 to 75,000 gallons are not to exceed 1.5 gallons per hour for semiannual testing or 0.75 gallons for annual testing.

c. Fuel systems with 75,000 to 100,000 gallons are not to exceed 2.0 gallons per hour for semiannual testing or one gallon for annual testing.

d. Fuel systems greater than 100,000 gallons are not to exceed 3.0 gallons per hour for semiannual testing or 1.5 for annual testing.

2. Piping segments not capable of meeting the maximum 3.0 gallon per hour leak rate for the semiannual test may be tested at a leak rate up to 6.0 gallons per hour according to the following schedule:

a. First test, not later than October 13, 2018, airport hydrant systems may use up to a 6.0 gallon per hour leak rate.

b. Second test, between October 13, 2018, and October 13, 2021, airport hydrant systems may use up to a 6.0 gallon per hour leak rate.

c. Third test, between October 13, 2021, and October 13, 2022, airport hydrant systems must use a 3.0 gallon per hour leak rate.

d. Subsequent tests, after October 13, 2022, begin using semiannual or annual line testing according to the maximum leak detection rate in par. (b).

3. Perform inventory control in accordance with s. ATCP 93.515(2) at least every 30 days that can detect a leak equal to or less than 0.5 percent of flow through; and

4. Perform a line tightness test, conducted in accordance with s. ATCP 93.515(4), at least every 2 years; or

5. Another method approved by the implementing agency if the owner and operator can demonstrate that the method can detect a release as effectively as any of the methods allowed in this section. In comparing methods, the implementing agency shall consider the size of release that the method can detect and the frequency and reliability of detection.

(3) REGISTRATION AND NOTIFICATION.

(a) The owner of a newly installed airport hydrant system shall notify the implementing agency and register the system in accordance with s. ATCP 93.140.

(b) All owners of airport hydrant systems shall provide proof of financial responsibility in accordance with s. ATCP 93.700.

(4) SYSTEM REQUIREMENTS.

(a) All new airport hydrant systems shall be designed and equipped with isolation valves appropriate for leak testing.

(b) Any repair or upgrade to an existing airport hydrant system shall include the installation of isolation valves in the section that is repaired or upgraded.

(5) PERIODIC INSPECTIONS AND WALKTHROUGHS. Owners and operators must inspect the following additional areas for airport hydrant systems at least once every 30 days if confined space entry according to the occupational safety and health administration is not required, or at least annually if confined space entry is required:

(a) Hydrant pits-visually check for any damage; remove any liquid or debris; and check for any leaks; and

(b) Hydrant piping vaults-check for any hydrant piping leaks.

Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.

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