[Code of Federal Regulations]
[Title 40, Volume 27]
[Revised as ofJuly 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR466.02]

[Page 608-609]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 466--PORCELAIN ENAMELING POINT SOURCE CATEGORY--Table of Contents
 
Sec. 466.02  General definitions.

    In addition to the definitions set forth in 40 CFR part 401, the 
following definitions apply to this part:
    (a) ``Porcelain enameling'' means the entire process of applying a 
fused vitreous enamel coating to a metal basis material. Usually this 
includes metal preparation and coating operations.
    (b) ``Basis material'' means the metal part or base onto which 
procelain enamel is applied.
    (c) ``Area processed'' means the total basis material area exposed 
to processing solutions.
    (d) ``Area coated'' means the area of basis material covered by each 
coating of enamel.
    (e) ``Coating operations'' means all of the operations associated 
with preparation and application of the vitreous coating. Usually this 
includes ballmilling, slip transport, application of slip to the 
workpieces, cleaning and recovery of faulty parts, and firing (fusing) 
of the enamel coat.

[[Page 609]]

    (f) ``Metal preparation'' means any and all of the metal processing 
steps preparatory to applying the enamel slip. Usually this includes 
cleaning, pickling and applying a nickel flash or chemical coating.
    (g) The term ``control authority'' is defined as the POTW if it has 
an approved pretreatment program; in the absence of such a program, the 
NPDES state if it has an approved pretreatment program or EPA if the 
State does not have an approved program.
    (h) The term ``precious metal'' means gold, silver, or platinum 
group metals and the principal alloys of those metals.