AS NZS 4280.1:2017 pdf free.406 MHz satellite distress beacons Part 1: Marine emergency position-indicating radio beacons (EPIRB).
3.3 Operational
3.3.1 Prevention of inadvertent activation
The satellite EPIRB shall:
a) (A.810(1 9)IA.2.3.1) be fitted with adequate means to prevent inadvertent activation and deactivation;
b) not automatically activate when water washes over it while in its release mechanism. See Table 1;
c) be designed to limit any inadvertent continuous 406 MHz transmission to a maximum of 45 s.
3.3.2 Immersion, buoyancy and drop into water
The satellite EPIRB shall:
a) (A.810(19)/A.2.3.2) be so designed that the electrical portions are watertight at a depth of 10 m for at least 5 mm. Consideration shall be given to a temperature variation of 45 °C during transitions from the mounted position to immersion. The harmful effects of a marine environment, condensation and water leakage shall not affect the performance of the beacon;
b) (A.810(19)/A.2.3.6) be capable of floating upright in calm water and have positive stability and sufficient buoyancy in all sea conditions;
c) (A.810(19)/A.2.3.7) be capable of being dropped into the water without damage from a height of 20 m.
3.3.3 Activation
The following describes the activation of the satellite EPIRB.
a) The satellite EPIRB shall (A.810(19)/A.2.3.3) be automatically activated after floating free or when floating in the water, irrespective of the settings of any control. See Table 1.
b) The satellite EPIRB shall (A.810(19)/A.2.3.4) be capable of repetitive manual activation and manual deactivation.
Manual deactivation shall not prevent automatic activation of the satellite EPIRB when automatically released from its release mechanism or when floating in the water.
c) The satellite EPIRB shall (A.810(19)/A.2.3.11) be provided with a low-duty cycle white light (of at least effective 0,75 Cd) active during darkness and all other lighting conditions, and flashing at a rate of 20 to 30 times per minute, with a flash duration of between 10—6 s and 10-1 s to indicate its position for the nearby survivors and rescue units.
The light shall be mounted so that it produces effective 0,75 cd or greater over as great a portion of the upper hemisphere as is practical. The arithmetic mean of the light output over the entire upper hemisphere shall not be less than effective 0,50 cd.AS NZS 4280.1 pdf download.