---
kind: "section"
citation: "40 C.F.R. § 60.4213"
title: "40"
number: "60.4213"
heading: "What test methods and other procedures must I use if I am an owner or operator of a stationary CI internal combustion engine with a displacement of greater than or equal to 30 liters per cylinder?"
url: "https://uscodex.org/cfr/40/60.4213"
---

# §60.4213. What test methods and other procedures must I use if I am an owner or operator of a stationary CI internal combustion engine with a displacement of greater than or equal to 30 liters per cylinder?


Owners and operators of stationary CI ICE with a displacement of greater than or equal to 30 liters per cylinder must conduct performance tests according to [paragraphs (a) through (f)](#a..f) of this section.

- (a) Each performance test must be conducted according to the requirements in [§ 60.8](/cfr/40/60.8.md) and under the specific conditions that this subpart specifies in table 7. The test must be conducted within 10 percent of 100 percent peak (or the highest achievable) load.
- (b) You may not conduct performance tests during periods of startup, shutdown, or malfunction, as specified in [§ 60.8(c)](/cfr/40/60.8.md?p=c).
- (c) You must conduct three separate test runs for each performance test required in this section, as specified in [§ 60.8(f)](/cfr/40/60.8.md?p=f). Each test run must last at least 1 hour.
- (d) To determine compliance with the percent reduction requirement, you must follow the requirements as specified in [paragraphs (d)(1) through (3)](#d-1..d-3) of this section.
  - (1) You must use Equation 2 of this section to determine compliance with the percent reduction requirement:
  - (2) You must normalize the NOX or PM concentrations at the inlet and outlet of the control device to a dry basis and to 15 percent oxygen (O2) using Equation 3 of this section, or an equivalent percent carbon dioxide (CO2) using the procedures described in [paragraph (d)(3)](#d-3) of this section.
  - (3) If pollutant concentrations are to be corrected to 15 percent O2 and CO2 concentration is measured in lieu of O2 concentration measurement, a CO2 correction factor is needed. Calculate the CO2 correction factor as described in [paragraphs (d)(3)(i) through (iii)](#d-3-i..d-3-iii) of this section.
    - (i) Calculate the fuel-specific Fo value for the fuel burned during the test using values obtained from Method 19, [Section 5.2](/cfr/40/5.2.md), and the following equation:
    - (ii) Calculate the CO2 correction factor for correcting measurement data to 15 percent O2, as follows:
    - (iii) Calculate the NOX and PM gas concentrations adjusted to 15 percent O2 using CO2 as follows:
- (e) To determine compliance with the NOX mass per unit output emission limitation, convert the concentration of NOX in the engine exhaust using Equation 7 of this section:
- (f) To determine compliance with the PM mass per unit output emission limitation, convert the concentration of PM in the engine exhaust using Equation 8 of this section:

## Notes

### Amendments

[71 FR 39172, July 11, 2006, as amended at 76 FR 37971, June 28, 2011]

### Source

Source: 71 FR 39172, July 11, 2006, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.

### Amendments

[71 FR 39172, July 11, 2006, as amended at 76 FR 37971, June 28, 2011]