[Code of Federal Regulations]
[Title 40, Volume 17]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR86.319-79]

[Page 600]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 86_CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND 
ENGINES--Table of Contents
 
Subpart D_Emission Regulations for New Gasoline-Fueled and Diesel-Fueled 
           Heavy-Duty Engines; Gaseous Exhaust Test Procedures
 
Sec. 86.319-79  Analyzer checks and calibrations; frequency and overview.

    (a) Prior to initial use and after major repairs, bench check each 
analyzer (see Sec. 86.320).
    (b) At least monthly during testing, check the NOX 
converter efficiency, as described in Sec. 86.332.
    (c) At least once every 30 days during testing, perform the 
following:
    (1) Leak check the pressure side of the system (see Sec. 86.328). 
If the option described in Sec. 86.328(b)(2) is used, a pressure leak 
check is not required.
    (2) Calibrate all analyzers (see Sec. Sec. 86.330 through 86.332).
    (3) Check the analysis system response time (see Sec. 86.329). If 
the option described in Sec. 86.329(b) is used, a response time check 
is not required.
    (4) Verify that the automatic data collection system (if used) meets 
the chart reading requirements found in Sec. 86.343.
    (5) Check the fuel flow measurement instrument to insure that the 
specifications in Sec. 86.314 are met. Flow meters of the tapered tube 
and float design (rotometers) or the balance beam principle need be 
checked only every 90 days.
    (d) At least once every 90 days during testing check the water 
rejection ratio and the CO2 rejection ratio on all NDIR 
analyzers (see Sec. Sec. 86.321 and 86.322).
    (e) At least once every 180 days during testing check the 
dynamometer test stand and power output instrumentation (see Sec. 
86.333).

[42 FR 45154, Sept. 8, 1977, as amended at 58 FR 58422, Nov. 1, 1993]