30 C.F.R. § 7.102 Exhaust gas cooling efficiency test.
Title 30 - Mineral Resources
(a) Test procedures. (1) Follow the procedures specified in §7.101(a). (2) Install a temperature measuring device to measure the exhaust gas temperature at discharge from the exhaust conditioner. The temperature measuring device shall be accurate to ±4 °F (±2 °C). (3) Determine the exhaust gas temperature at discharge from the exhaust conditioner before the exhaust gas is diluted with air. (b) Acceptable performance. (1) The exhaust gas temperature at discharge from a wet exhaust conditioner before the exhaust gas is diluted with air shall not exceed 170 °F (76 °C). (2) The exhaust gas temperature at discharge from a dry exhaust conditioner before the gas is diluted with air shall not exceed 302 °F (150 °C).
Title 30: Mineral Resources
PART 7—TESTING BY APPLICANT OR THIRD PARTY
Subpart F—Diesel Power Packages Intended for Use in Areas of Underground Coal Mines Where Permissible Electric Equipment is Required
§ 7.102 Exhaust gas cooling efficiency test.

