SOUTH COAST AIR QUALITY MANAGEMENT

RULE 1126 - MAGNET WIRE COATING OPERATIONS
(Adopted February 2, 1979)(Amended January 8, 1982)(Amended May 5, 1989)(Amended
Nov. 2, 1990)(Amended Dec. 7, 1990)(Amended August 2, 1991) (Amended March 6, 1992)(Amended January 13, 1995)

(a) Applicability

This rule applies to all coating operations on magnet wire, where the wire is continuously drawn through a coating applicator.

(b) Definitions

For the purpose of this rule, the following definitions shall apply:

  1. AEROSOL COATING PRODUCT is a pressurized coating product containing pigments or resins that is dispensed by means of a propellant, and is packaged in a disposable can for hand-held application.
  2. EXEMPT COMPOUNDS are any of the following compounds:

    (A) Group I

    (B) Group II

    The use of Group II compounds and/or carbon tetrachloride may be restricted in the future because they are toxic, potentially toxic, upper-atmosphere ozone depleters, or cause other environmental impacts. By January 1, 1996, production of chlorofluorocarbons (CFC), 1,1,1-trichloroethane (methyl chloroform), and carbon tetrachloride will be phased out in accordance with the Code of Federal Regulations Title 40, Part 82 (December 10, 1993).

  3. GRAMS OF VOC PER LITER OF COATING, LESS WATER AND LESS EXEMPT COMPOUNDS is the weight of VOC per combined volume of VOC and coating solids and can be calculated by the following equation: 
    Grams of VOC per Liter of Coating,          Ws  -  Ww  -  Wes

Less Water and Less Exempt Compounds =   -----------------------

                                            Vm  -  Vw  -  Ves

    Where:
    Ws = weight of volatile compounds in grams
    Ww = weight of water in grams
    Wes = weight of exempt compounds in grams
    Vm = volume of material in liters
    Vw = volume of water in liters
    Ves = volume of exempt compounds in liters

  4. MAGNET WIRE is wire used in electro-magnetic field application in electrical equipment, such as transformers, motors, generators, and magnetic tape recorders.
  5. MAGNET WIRE COATING OPERATIONS is the application of any coating on magnet wire, where the wire is continuously drawn through a coating applicator.
  6. SOLVENT CLEANING OPERATION is the removal of loosely held uncured adhesives, uncured inks, uncured coatings, and contaminants. Contaminants include, but are not limited to, dirt, soil, and grease from parts, products, tools, machinery, equipment, and general work areas. In a cleaning process which consists of a series of cleaning methods, each distinct method shall constitute a separate solvent cleaning operation.
  7. VOLATILE ORGANIC COMPOUND (VOC) is defined as any volatile compound containing the element carbon, excluding methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, ammonium carbonate, and exempt compounds.

(c) Requirements

  1. Any person shall not use or apply any magnet wire coating which contains more than 200 grams VOC per liter (1.67 lb/gal) of coating less water and less exempt compounds, or
  2. Any person applying magnet wire coating may comply with the provisions of paragraph (c)(1) by using an emission control system, for reducing emissions of VOC, which has been approved in writing by the Executive Officer.

    (A) The emission control system shall achieve at least 90 percent overall efficiency by direct incineration at 1499oF or higher, or

    (B) The approved system shall reduce the VOC emissions when using non-compliant coatings to an equivalent or greater level that would be achieved by the provisions in paragraph (c)(1). The required efficiency of an emission control system at which an equivalent or greater level of VOC reduction will be achieved shall be calculated by the following equation:

                       (VOCLWc)            1 - (VOCLWn Max/Dn Max)

C.E.  =  [ 1 - { -------------   X   ----------------------- } ]  X  100

                  (VOCLWn Max)               1 - (VOCLWc/Dc)





Where:

       C.E.        = Control Efficiency, percent

       VOCLWc       = VOC Limit of Rule 1126, less water and less exempt

                     compounds, pursuant to subdivision (c).

       VOCLWn Max    = Maximum VOC content of non-compliant coating

                     used in conjunction with a control device, less water 

                     and less exempt compounds.

       Dn Max       = Density of solvent, reducer, or thinner contained in the

                     non-compliant coating, containing the maximum VOC content 

                     of the multicomponent coating.

       Dc          = Density of corresponding solvent, reducer, or thinner used

                     in the compliant coating system = 880g/L.
  3. Solvent Cleaning Operations; Storage and Disposal of VOC-Containing Materials

    All solvent cleaning operations and the storage and disposal of VOC-containing materials used in solvent cleaning operations shall be carried out pursuant to Rule 1171 - Solvent Cleaning Operations.

  4. Recordkeeping

    Records shall be maintained pursuant to Rule 109.

(d) Test Methods

  1. Determination of VOC Content

    The VOC content of coatings subject to the provisions of this rule shall be determined by using:

    (A) United States Environmental Protection Agency (USEPA) Reference Method 24, (Code of Federal Regulations Title 40, Part 60, Appendix A). The exempt compound content shall be determined by SCAQMD Test Method 303 (Determination of Exempt Compounds) contained in the SCAQMD "Laboratory Methods of Analysis for Enforcement Samples" manual; or,

    (B) SCAQMD Test Method 304 [Determination of Volatile Organic Compounds (VOC) in Various Materials] contained in the SCAQMD "Laboratory Methods of Analysis for Enforcement Samples" manual.

    (C) Exempt Perfluorocarbon Compounds

    The following classes of compounds:

    will be analyzed as exempt compounds for compliance with paragraph (c)(1) only when manufacturers specify which individual compounds are used in the coating formulation. In addition, the manufacturers shall identify the USEPA, California Air Resources Board, and the SCAQMD approved test methods used to quantify the amount of each exempt compound.

  2. Determination of Efficiency of Emission Control System

    (A) The efficiency of the collection device of the emission control system as specified in paragraph (c)(2) shall be determined by the USEPA method cited in 55 Federal Register 26865 (June 29, 1990), or any other method approved by the USEPA, the California Air Resources Board, and the SCAQMD.

    (B) The efficiency of the control device of the emission control system as specified in paragraph (c)(2) and the VOC content in the control device exhaust gases, measured and calculated as carbon, shall be determined by USEPA Test Methods 25, 25A, or SCAQMD Method 25.1 (Determination of Total Gaseous Non-Methane Organic Emissions as Carbon) as applicable. USEPA Test Method 18, or ARB Method 422 shall be used to determine emissions of exempt compounds.

  3. Multiple Test Methods

    When more than one test method or set of test methods are specified for any testing, a violation of any requirement of this rule established by any one of the specified test methods or set of test methods shall constitute a violation of the rule.

  4. All test methods referenced in this section shall be the most recently approved version.

(e) Exemptions

  1. The provisions of paragraphs (c)(1), (c)(2), and (c)(3) shall not apply to:

    (A) Magnet wire coating operations which emit into the atmosphere less than 1 kg (2.2 lbs) per hour, and not more than 5 kg (11 lbs) per day of volatile organic compounds.

    (B) Coating of electrical machinery and equipment sub-assemblies, such as motor housings.

  2. The provisions of this rule shall not apply to aerosol coating products.