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57 FR 61992, Dec. 29, 1992, unless otherwise noted.
64 FR 29503, June 1, 1999, unless otherwise noted.
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Subscribe to: 40 CFR Part 63 Subpart DDD - Additional Monitoring Information
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A bag leak detection system must meet the following requirements:
(a) The bag leak detection system must be certified by the manufacturer to be capable of detecting PM emissions at concentrations of 10 milligrams per actual cubic meter (0.0044 grains per actual cubic foot) or less.
(b) The sensor on the bag leak detection system must provide output of relative PM emissions.
(c) The bag leak detection system must have an alarm that will sound automatically when it detects an increase in relative PM emissions greater than a preset level.
(d) The alarm must be located in an area where appropriate plant personnel will be able to hear it.
(e) For a positive-pressure fabric filter, each compartment or cell must have a bag leak detector. For a negative-pressure or induced-air fabric filter, the bag leak detector must be installed downstream of the fabric filter. If multiple bag leak detectors are required (for either type of fabric filter), detectors may share the system instrumentation and alarm.
(f) Each triboelectric bag leak detection system must be installed, operated, adjusted, and maintained so that it follows EPA's “Fabric Filter Bag Leak Detection Guidance” (EPA-454/R-98-015, September 1997). Other bag leak detection systems must be installed, operated, adjusted, and maintained so that they follow the manufacturer's written specifications and recommendations.
(g) At a minimum, initial adjustment of the system must consist of establishing the baseline output in both of the following ways:
(1) Adjust the range and the averaging period of the device.
(2) Establish the alarm set points and the alarm delay time.
(h) After initial adjustment, the range, averaging period, alarm set points, or alarm delay time may not be adjusted except as specified in the operations, maintenance, and monitoring plan required by § 63.1187 of this subpart. In no event may the range be increased by more than 100 percent or decreased by more than 50 percent over a 365 day period unless a responsible official as defined in § 63.2 of the general provisions in subpart A of this part certifies in writing to the Administrator that the fabric filter has been inspected and found to be in good operating condition.
(a) During the performance test, you must establish the average operating temperature of an incinerator as follows:
(1) Continuously measure the operating temperature of the incinerator.
(2) Determine and record the average temperatures in consecutive 15-minute blocks.
(3) Determine and record the arithmetic average of the recorded average temperatures measured in consecutive 15-minute blocks for each of the one-hour performance test runs.
(4) Determine and record the arithmetic average of the three one-hour average temperatures during the performance test runs. The average of the three one-hour performance test runs establishes the temperature level to use to monitor compliance.
(b) To comply with the requirements for maintaining the operating temperature of an incinerator after the performance test, you must measure and record the average operating temperature of the incinerator as required by §§ 63.1182 and 63.1183 of this subpart. This average operating temperature of the incinerator is based on the arithmetic average of the one-hour average temperatures for each consecutive three-hour period and is determined in the same manner described in paragraphs (a)(1) through (a)(4) of this section.
You may change control device and process operating parameter levels established during performance tests and used to monitor compliance if you do the following:
(a) You must notify the Administrator of your desire to expand the range of a control device or process operating parameter level.
(b) Upon approval from the Administrator, you must conduct additional performance tests at the proposed new control device or process operating parameter levels. Before operating at these levels, the performance test results must verify that, at the new levels, you comply with the emission limits in §§ 63.1178 and 63.1179 of this subpart.
(a) An operations, maintenance, and monitoring plan must be submitted to the Administrator for review and approval as part of your application for the title V permit.
(b) The operations, maintenance, and monitoring plan must include the following:
(1) Process and control device parameters you will monitor to determine compliance, along with established operating levels or ranges for each process or control device.
(2) A monitoring schedule.
(3) Procedures for properly operating and maintaining control devices used to meet the standards in §§ 63.1178 and 63.1179 of this subpart. These procedures must include an inspection of each incinerator at least once per year. At a minimum, you must do the following as part of an incinerator inspection:
(i) Inspect all burners, pilot assemblies, and pilot sensing devices for proper operation. Clean pilot sensor if necessary.
(ii) Ensure proper adjustment of combustion air, and adjust if necessary.
(iii) Inspect, when possible, all internal structures (such as baffles) to ensure structural integrity per the design specifications.
(iv) Inspect dampers, fans, and blowers for proper operation.
(v) Inspect motors for proper operation.
(vi) Inspect, when possible, combustion chamber refractory lining. Clean, and repair or replace lining if necessary.
(vii) Inspect incinerator shell for proper sealing, corrosion, and/or hot spots.
(viii) For the burn cycle that follows the inspection, document that the incinerator is operating properly and make any necessary adjustments.
(ix) Generally observe whether the equipment is maintained in good operating condition.
(x) Complete all necessary repairs as soon as practicable.
(4) Procedures for keeping records to document compliance.
(5) Corrective actions you will take if process or control device parameters vary from the levels established during performance testing. For bag leak detection system alarms, example corrective actions that may be included in the operations, maintenance, and monitoring plan include:
(i) Inspecting the fabric filter for air leaks, torn or broken bags or filter media, or any other condition that may cause an increase in emissions.
(ii) Sealing off defective bags or filter media.
(iii) Replacing defective bags or filter media, or otherwise repairing the control device.
(iv) Sealing off a defective fabric filter compartment.
(v) Cleaning the bag leak detection system probe, or otherwise repairing the bag leak detection system.
(vi) Shutting down the process producing the particulate emissions.