Mich. Admin. Code R. 336.1622

Current through Vol. 24-21, December 1, 2024

Section R. 336.1622 - Emission of volatile organic compounds from existing components of petroleum refineries; refinery monitoring program

Rule 622.

(1) A person shall not cause or allow the emission of any volatile organic compound from any existing component, as listed in subrule (2) of this rule, of a petroleum refinery, including topping plants, unless all of the provisions of this rule are satisfied or unless an equivalent control method, as approved by the department under R 336.1602(2), is implemented. An alternate acceptable control method is described in 'standards of Performance for Equipment Leaks of VOC in Petroleum Refineries for which Construction, Reconstruction, or Modification Commenced After January 4, 1983, and on or Before November 7, 2006," 40 CFR part 60 , subpart GGG adopted by reference in R 336.1902.

(2) A person shall not operate an existing petroleum refinery unless a monitoring program and schedule approved by the department is implemented. This monitoring program and schedule must provide for, and identify by type and refinery unit, by quarter, all of the following:

(a) An annual inspection of all of the following components:

(i) Pump seals.

(ii) Process valves in liquid volatile organic compound service.

(iii) Process drains.

(iv) Components that are difficult to monitor.

(b) A quarterly inspection of all of the following components:

(i) Compressor seals.

(ii) Process valves in gaseous volatile organic compound service.

(iii) Pressure-relief valves in gaseous volatile organic compound service.

(c) A weekly visual inspection of all pump seals from which volatile organic compounds could leak.

(d) An immediate inspection of any pump seal from which a liquid, including a volatile organic compound, is observed dripping.

(e) An inspection of any relief valve from which a volatile organic compound could discharge within 2 normal business days after it begins venting to the atmosphere.

(f) An inspection as soon as is practical, but not later than 2 normal business days, after the repair of any component that was found leaking.

(3) Except for the visual inspections required by subrule (2)(c) of this rule, all inspections must be performed using equipment and procedures as specified in 40 CFR part 60 , appendix A, method 21, adopted by reference in R 336.1902. A component is leaking when a concentration of more than 10,000 ppm, by volume, as methane or hexane, is measured by method 21.

(4) If implementation of the quarterly leak detection program as specified in subrule (2)(b) of this rule shows that 2% or less of the process valves in a given refinery unit are leaking for 2 consecutive quarters, then the inspections of process valves in that refinery unit may be skipped for 1 quarter. If 2% or less of the process valves in a given refinery unit are leaking for 5 consecutive quarters, then the inspections may be done annually. If a subsequent inspection shows that if more than 2% of the process valves are leaking, then quarterly inspections of valves shall again be required.

(5) The percent of valves leaking on a refinery unit, as referenced in subrule (4) of this rule, must be determined by dividing the total number of valves found to be leaking on the refinery unit during the specified monitoring period by the total number of valves on the refinery unit that are required to be monitored by this rule.

(6) This rule does not apply to any of the following:

(a) Pressure-relief valves that vent to an operating flare header, fuel gas system, or vapor control device.

(b) Components that are unsafe to monitor, until monitoring personnel would no longer be exposed to immediate danger.

(c) Storage tank valves.

(d) Valves that are not externally regulated.

(e) Components that process, transfer, or contain 1 or more volatile organic compounds in the liquid phase under actual conditions, all of which have a true vapor pressure of less than 1.55 psia.

(7) Notwithstanding the provisions of subrule (2) of this rule, the monitoring of components, such as process drains and valves, that are used solely in effecting a refinery unit turnaround, is required only within the quarter following the turnaround.

(8) A leak that is detected pursuant to the monitoring program provisions of subrule (2) of this rule or for another reason must be repaired. Except as provided in subrule (10) of this rule, this leak must be repaired as soon as possible, but not more than 15 days after the leak is detected. Until the time that the leak is repaired and retested verifying a successful repair, the component causing the leak must bear a weather-resistant, numbered, identifying tag that indicates the date the leak was discovered.

(9) A log of all leaks detected pursuant to the provisions of subrules (2), (3), (5), and (6) of this rule or by another method must be maintained by the operator of the petroleum refinery. This log must identify all of the following:

(a) The leaking component by type and location.

(b) The number of the identifying tag.

(c) The date the leak was discovered.

(d) The date the leak was repaired.

(e) The date the component was retested after the repair with an indication of the testing results.

(f) The person or persons who performed the inspections. The log must be made available to any representative of the department during normal business hours of the refinery and be maintained for a minimum of 2 years.

(10) If a leak cannot be repaired within 15 days due to circumstances beyond the control of the operator of the petroleum refinery or because the leaking component cannot be repaired unless a significant portion of the refinery unit is shut down for turnaround, then the operator shall maintain a separate log of the non-repair. The log must identify all of the following:

(a) The leaking component by type, location, and refinery unit.

(b) The date the leak was discovered.

(c) The reason why the leak cannot be repaired within 15 days.

(d) The estimated date of repair.

(11) Within 25 days after the end of the previous quarter, the operator shall submit to the department a report that contains all of the following information for that quarter:

(a) The total number of components tested, by type.

(b) The total number of components found leaking and repaired, by type.

(c) The accumulative total number of components, by refinery unit and type, found to be leaking and not repaired within the required time period and the reason for non-repair.

(d) The type or types of monitoring equipment utilized during the quarter. The report required by this subrule must be made on a form approved by the department.

(12) The department may require the early shutdown for turnaround of a refinery unit if the department feels that there are a significant number of leaks that would justify this action.

(13) Except for safety pressure-relief valves, a person shall not operate existing petroleum refinery equipment that has a valve at the end of a pipe or line that contains a volatile organic compound, unless the pipe or line is sealed with a second valve, blind flange, plug, or cap. The sealing device may be removed only when a sample is being taken or during maintenance operations. A current, written description detailing routine sampling procedures and listing the sealing devices involved must be maintained and be submitted to the department in an acceptable format upon request.

Mich. Admin. Code R. 336.1622

1981 AACS; 1993 AACS; 1997 AACS; 2002 AACS; 2017 AACS; 2023 MR 8, Eff. 4/18/2023