3-6 Altitude Adjustment. The design quantity of Halon 1301 shall be adjusted to compensate for altitudes of more than 3000 ft. (1000 m) above or below sea level and pressures that vary by 10 percent above or below standard sea level pressure (29.92 in. Hg at 70 degrees F). The Halon 1301 quantity shall be corrected by multiplying the quantity determined in 3-5.1 and 3-5.2 by the ratio of average ambient enclosure pressure to standard sea level pressure.	The altitude adjustment in A-3-6 of 2001 is used for all agents to adjust concentration for altitude.
3-7.1.2 Discharge Time. The agent discharge shall be substantially completed in a normal 10 seconds or as otherwise required by the authority having jurisdiction. This period shall be measured as the interval between the first appearance of liquid at the nozzle and the time when the discharge becomes predominantly gaseous. This point is distinguished by a marked change in both the sound and the appearance of the discharge.
4-7.2.2 Enclosure Integrity Acceptance. All total flooding systems shall have the enclosure examined and tested to locate and then effectively seal any significant air leaks that could result in a failure of the enclosure to hold the specified Halon 1301 concentration level for the specified holding period. The currently preferred method is using a blower door fan unit and smoke pencil. If quantitative results are recorded, these could be useful for comparison at future tests on the same room with a door fan.
A-3.3.3 The design of total flooding Halon 1301 systems only beneath the raised floor of EDP facilities when the occupied space above the raised floor is not similarly protected by a total flooding Halon 1301 system does not meet the intent of this standard. Such a design does not comply with the definition of a total flooding system or with this chapter.
A-3-5.2 Leakage of Halon 1301 through Enclosure Openings. Halon 1301 discharged into an enclosure for total flooding will result in an enclosure for total flooding will result in an air/agent mixture that has a higher specific gravity than the air surrounding the enclosure. Therefore, any opening in the walls of the enclosure will allow the heavier air/agent mixture to flow out of the enclosure, being replaced with lighter outside air flowing into the enclosure through the same opening. The rate at which agent is lost through openings will depend on the height and width of the opening, the location of the opening in the wall, and the concentration of agent in the enclosure. Fresh air entering the enclosure will collect toward the top, forming an interface between the air/agent mixture and fresh air. As leakage proceeds, the interface will move toward the bottom of the opening. The space below the interface will contain essentially the original extinguishing concentration of agent, whereas the upper space will be completely unprotected. The rate at which the interface moves downward increases as concentrations of agent increase, so that simply injecting an overdose of agent initially will not provide an extended period of protection.
All of Appendix B