SJUAPCD RULE 4354 GLASS MELTING FURNACES
LAST REVISED 09/14/94

RULE 4354 - GLASS MELTING FURNACES

(Adopted September 14, 1994)

1.0 Purpose

The purpose of this rule is to limit emissions of nitrogen oxides (NOx) from glass melting furnaces.

2.0 Applicability

The provisions of this rule shall apply to any glass melting furnace that is part of a major NOx source.

3.0 Definitions

3.1 Container glass: Any glass manufactured by pressing, blowing in molds, drawing, rolling, or casting which is used as a food and beverage type container.



3.2 Fiberglass: Material consisting of fine filaments of glass that are combined in yarn and woven or spun into fabrics, or that are used in masses as thermal or acoustical insulating products for the construction industry.



3.3 Flat glass: Any glass produced by the float, sheet, rolled, or plate glass process which is used in windows, windshields, or plate glass.



3.4 Idling: The operation of a furnace at less than 25 percent of the production capacity as stated on the Permit to Operate.



3.5 Major NOx Source: any major source as defined in Rule 2201 (New and Modified Stationary Source Review Rule), with a potential to emit 50 tons or more per year of NOx.



3.6 Pull: The removal of glass from a glass melting furnace for production purposes, generally expressed in short tons.



3.7 Shutdown: The period of time during which a furnace is allowed to cool from operating temperature to a lower temperature.



3.8 Start-up: The period of time during which a furnace is heated to operating temperature from a lower temperature, and brought to stabilization, not to exceed 90 days following initial pull for a Flat Glass furnace, and not to exceed 30 days for a Container Glass furnace.

4.0 Exemptions

4.1 Except for section 6.5, the provisions of this rule shall not apply to electric glass melting furnaces where all the heat is supplied by an electric current from electrodes submerged in the molten glass, except that heat may be supplied by other fuels for start-up when the furnace contains no molten glass.



4.2 The requirements of section 5.0 shall not apply during periods of start-up, shutdown or idling.

5.0 Requirements

5.1 The owner/operator of any container glass or fiberglass melting furnace shall not operate such furnace in such a manner that results in NOx emissions exceeding the following limits:

5.2 In lieu of compliance with the NOx emission limits in section 5.1, any container glass or fiberglass melting furnace may achieve and maintain a minimum of 80 percent NOx reduction by weight from a baseline determined by calculating the average emission rate of source test results taken between 1989 and 1992 calendar years and pursuant to sections 6.4 and 8.0.



5.3 The owner/operator of any flat glass melting furnace shall not operate such furnace in such a manner that results in NOx emissions exceeding the limit calculated using the following equation:

6.0 Administrative Requirements

6.1 Emission Control Plan



The owner/operator of any glass melting furnace subject to the provisions of this rule shall submit to the APCO an emissions control plan of all actions to be taken to satisfy the requirements of section 5.0. Such plan shall identify the type of emission controls to be applied to each glass melting furnace and a construction schedule, or shall provide source tests, in accordance with section 6.4, sufficient to demonstrate that the furnace is currently in compliance with the emission limits of this rule.



6.2 Recordkeeping



The owner/operator of any glass melting furnace subject to the provisions of this rule shall maintain an operating log for each furnace that includes: on a monthly basis, the total hours of operation; type and quantity of fuel used in each furnace; and the quantity of glass pulled. This information shall be maintained for a period of two years and submitted to the APCO upon request.



6.3 Compliance Source Testing



Each glass melting furnace shall be tested at least once every calendar year to demonstrate compliance with the applicable requirements of section 5.0.



6.4 Test Methods



6.4.1 Compliance with the requirements of section 5.0 shall be determined in accordance with the following source test procedures or their equivalents as approved by the U.S. Environmental Protection Agency (EPA) and the APCO:



6.4.1.1 NOx emission rate (Heat input basis)- EPA Method 19.

6.4.1.2 Oxides of nitrogen- EPA Method 7E, or ARB Method 100.

6.4.1.3 Stack gas oxygen- EPA Method 3 or 3A, or ARB Method 100.



6.4.2 Source test results shall be representative of operations equal to or greater than 60 percent of the production or fuel use capacity, as stated in the Permit to Operate.



6.4.3 The owner/operator of a glass melting furnace subject to this rule, shall submit the method used for calculating the amount of glass pulled, as part of the source test results.



6.5 Exempt furnaces



Any owner/operator claiming an exemption under section 4.1 shall submit support documentation identifying reasons for the exemption, and shall maintain annual operating records and/or support documentation necessary to claim exemption. This information shall be maintained for two years and submitted to the APCO upon request.

7.0 Compliance Schedule

7.1 Owners/operators of container glass and fiberglass melting furnaces who choose to comply, or are already in compliance with the emission limits of section 5.1, shall demonstrate full compliance with the provisions of this rule according to the following schedule:



7.1.1 By March 14, 1995, submit to the APCO:



7.1.1.1 An emission control plan pursuant to section 6.1 and a complete application for an Authority to Construct (ATC) as necessary, or



7.1.1.2 Support documentation for each exempt furnace, pursuant to section 6.5.



7.1.2 By May 31, 1995, demonstrate full compliance with all the provisions of this rule.



7.2 Owners/operators of container glass and fiber glass melting furnaces that are not already in compliance with the emission limits of section 5.1 and who choose to comply with the emission limits of section 5.2, shall achieve compliance according to the following schedule:



7.2.1 By May 31, 1997, submit to the APCO:



7.2.1.1 An emission control plan pursuant to section 6.1, or



7.2.1.2 Support documentation for each exempt furnace, pursuant to section 6.5.



7.2.2 By November 30, 1997, submit a complete application for an authority to Construct for all modifications.



7.2.3. By May 31, 1999, demonstrate full compliance with the applicable provisions of this rule.



7.3 Owners/operators of flat glass melting furnaces complying with the emission limits of section 5.3, shall demonstrate full compliance with the provisions of this rule according to the following schedule:



7.3.1 By March 14, 1995, submit to the APCO:



7.3.1.1 A complete application for an Authority to Construct (ATC), indicating each furnace's daily pull rate capacity in tons of glass pulled per day. This capacity shall be stated as a permit condition on the Permit to Operate, or



7.3.1.2 Support documentation for each exempt furnace, pursuant to section 6.5.



7.3.2 By May 31, 1995, demonstrate full compliance with all the provisions of this rule.

8.0 Calculations

The NOx mass emission rate (lbs/hr) shall be converted to lbs NOx/ton of glass pulled using an emission test method approved by the U.S. EPA, ARB, and the APCO, and according to the following expression: