[Code of Federal Regulations]
[Title 40, Volume 18]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR92.113]
[Page 432-433]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 92--CONTROL OF AIR POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES--
Table of Contents
Subpart B--Test Procedures
Sec. 92.113 Fuel specifications.
(a) Diesel test fuel. (1) The diesel fuels for testing locomotives
or locomotive engines designed to operate on diesel fuel shall be clean
and bright, with pour and cloud points adequate for operability. The
diesel fuel may contain nonmetallic additives as follows: cetane
improver, metal deactivator, antioxidant, dehazer, antirust, pour
depressant, dye, dispersant, and biocide. The diesel fuel shall also
meet the specifications (as determined using methods incorporated by
reference at Sec. 92.5) in Table B113-1 of this section, or
substantially equivalent specifications approved by the Administrator,
as follows:
Table B113-1
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Item ASTM Type 2-D
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Cetane Number................................. D613................................. 40-48
Cetane Index.................................. D976................................. 40-48
Distillation range:
IBP,
deg.F................................... D86.................................. 340-400
( deg.C)................................. ..................................... (171.1-204.4)
10 pct. point,
deg.F................................... D86.................................. 400-460
( deg.C)................................. ..................................... (204.4-237.8)
50 pct. point,
deg.F................................... D86.................................. 470-540
( deg.C)................................. ..................................... (243.3-282.2)
90 pct. point,
deg.F................................... D86.................................. 560-630
( deg.C)................................. ..................................... (293.3-332.2)
EP,
deg.F................................... D86.................................. 610-690
( deg.C)................................. ..................................... (321.1-365.6)
Gravity, deg.API............................. D287................................. 32-37
Total sulfur, pct............................. D2622................................ 0.2-0.4
Hydrocarbon composition, pct:
Aromatics,.................................. D5186................................ 1 27
Paraffins, Naphthenes, Olefins.............. D1319................................ (2)
Flashpoint, min.,
deg.F..................................... D93.................................. 130
deg.C..................................... ..................................... (54.4)
Viscosity, centistokes........................ D445................................. 2.0-3.2
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\1\ Minimum. \2\ Remainder.
(2) Other diesel fuels may be used for testing provided:
(i) They are commercially available; and
(ii) Information, acceptable to the Administrator, is provided to
show that only the designated fuel would be used in service; and
(iii) Use of a fuel listed under paragraph (a)(1) of this section
would have a detrimental effect on emissions or durability; and
(iv) Written approval from the Administrator of the fuel
specifications is provided prior to the start of testing.
(3) The specification of the fuel to be used under paragraphs
(a)(1), and (a)(2) of this section shall be reported in accordance with
Sec. 92.133.
(b) Natural gas test fuel (compressed natural gas, liquefied natural
gas). (1) Natural gas-fuel meeting the specifications (as determined
using methods incorporated by reference at Sec. 92.5) in Table B113-2 of
this section, or substantially similar specifications approved by the
Administrator, shall be used in exhaust emissions testing of locomotives
or locomotive engines designed to operate on natural gas-fuel, as
follows:
Table B113-2
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ASTM test
Item Mole pct. method No. Value
------------------------------------------------------------------------
Methane.......................... Min......... D1945......... 89.0
Ethane........................... Max......... D1945......... 4.5
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C3 and higher.................... Max......... D1945......... 2.3
C6 and higher.................... Max......... D1945......... 0.2
Oxygen........................... Max......... D1945......... 0.6
Inert gases: Sum of CO2 and N2-- Max......... D1945......... 4.0
Odorant \1\.
------------------------------------------------------------------------
\1\ The natural gas at ambient conditions must have a distinctive odor
potent enough for its presence to be detected down to a concentration
in air of not over \1/5\ (one-fifth) of the lower limit of
flammability.
(2) Other natural gas-fuels may be used for testing provided:
(i) They are commercially available; and
(ii) Information, acceptable to the Administrator, is provided to
show that only the designated fuel would be used in customer service;
and
(iii) Written approval from the Administrator of the fuel
specifications is provided prior to the start of testing.
(3) The specification of the fuel to be used under paragraph (b)(1)
or (b)(2) of this section shall be reported in accordance with
Sec. 92.133.
(c) Other fuel types. (1) For locomotives or locomotive engines
which are designed to be capable of using a type of fuel (or mixed fuel)
other than diesel fuel, or natural gas fuel (e.g., methanol), and which
are expected to use that type of fuel (or mixed fuel) in service, a
commercially available fuel of that type shall be used for exhaust
emission testing. The Administrator shall determine the specifications
of the fuel to be used for testing, based on the engine design, the
specifications of commercially available fuels, and the recommendation
of the manufacturer.
(2) The specification of the fuel to be used under paragraph (c)(1)
of this section shall be reported in accordance with Sec. 92.133.