Vapor tight definition

Vapor tight means equipment that allows no loss of vapors. Compliance with vapor-tight requirements can be determined by checking to ensure that the concentration at a potential leak source is not equal to or greater than 100 percent of the lower explosive limit (LEL) when measured with a combustible gas detector, calibrated with propane, at a distance of 1 inch (2.54 cm) from the source.
Vapor tight means capable of holding an initial positive pressure of 18 inches of water column and a vacuum pressure of six inches of water column without a pressure change of more than three inches of water column in five minutes.

Examples of Vapor tight in a sentence

  • Vapor tight fixtures shall have pressure clamping devices in lieu of the latches.

  • Vapor tight" means free of any vapor leaks to the extent possible based upon good engineering design and practice.

  • Vapor tight, as defined in 40 CFR 63.1105(d)(2), means that the pressure in the tank will not drop more than 750 pascals within 5 minutes after it is pressurized to a minimum of 4,500 pascals.

  • Vapor tight globes and guards on ship's lighting system shall not be removed.

  • Vapor tight caps are required for the liquid fill connection for all systems.


More Definitions of Vapor tight

Vapor tight means a reading of less than 10,000 parts per million above background as methane when measured at a distance of one centimeter from the leak source with a portable hydrocarbon detection instrument. “Background” is defined as the ambient concentration of organic compounds determined at least three meters upwind from any equipment to be inspected and uninfluenced by any specific emissions unit.
Vapor tight means not capable of allowing the passage of gases at the pressures encountered.
Vapor tight means a condition in which an organic vapor analyzer or a combustible gas detector at a potential volatile organic compounds leak source shows either less than ten thousand (10,000) parts per million when calibrated with methane, or less than twenty percent (20%) of the lower explosive limit when calibrated and operated according to the manufacturer’s specifications.
Vapor tight means a condition in which an organic vapor analyzer or a combustible gas detector at a potential VOC leak source shows either less than 10,000 ppm when calibrated with methane, or less than 20% of the lower explosive limit when calibrated and operated according to the manufacturer=s specifications.
Vapor tight means having the detection of less than 10,000 ppm hydrocarbon concentration, as determined by Method 21 in Appendix A of 40 CFR part 60, incorporated by ref- erence in s. NR 484.04 (17), at a distance of one inch from the source.
Vapor tight means capable of holding a pressure of 18 inH20 and a vacuum of 6 inH20 without sustaining a pressure change of more than 3 inH20 in five minutes.
Vapor tight means the condition where a combustible gas detector does not detect a leak of volatile organic materials when the probe of this meter is held parallel to the flow of volatile organic materials from the leak source.