BS IEC 61097-2:2021 pdf download – Global maritime distress and safety system (GMDSS) Part 2: Cospas-Sarsat EPIRB — Emergency position indicating radio beacon operating on 406 MHz — Operational and performance requirements, methods of testing and required test results.
1 Scope This part of IEC 61 097 specifies the minimum performance requirements, technical characteristics and type-testing requirements of the emergency position-indicating radio beacon used in the Cospas-Sarsat satellite system (EPIRB), as required by the International Convention for Safety of Life at Sea (SOLAS) as amended, and which is associated with IEC 60945. When a requirement in this document is different from the requirements in IEC 60945 or other standards, the requirement in this document takes precedence. This document incorporates the performance standards of IMO Resolution MSC.471 (1 01 ), the International Telecommunication Union (ITU) Radio Regulations as well as the technical characteristics for such transmitters contained in Recommendation ITU-R M.633, and takes account of the general requirements contained in IMO Resolution A.694(1 7). This document also includes minimum performance standards for a non-float-free EPIRB without float-free release mechanism (see Annex C). NOTE 1 Although a number of the requirements and tests can be similar, this document is not intended to be used with 406 MHz ship security alert system (SSAS) beacons. All texts of this document, whose wording is identical to that in the IMO Resolutions A.662(1 6), A.694(1 7), and MSC.471 (1 01 ) will be printed in italics and the Resolution/Recommendation and paragraph number indicated between brackets. NOTE 2 Classes of EPIRBs considered in this document are: – Class 0: Category 1 Float-free (−55 °C to +70 °C). The float-free release mechanism (A.662(1 6)) is capable of operating throughout the temperature range of −30 °C to +65 °C and of surviving a stowage temperature range of −55 °C to +70 °C. – Class 1 : Category 1 Float-free (−40 °C to +55 °C). The float-free release mechanism (A.662(1 6)) is capable of operating throughout the temperature range of −30 °C to +65 °C and of surviving a stowage temperature range of −40 °C to +65 °C.
g) The EPIRB shall be a single integral unit. No part of it shall be detachable without the use of tools. h) The EPIRB shall (MSC.471 (1 01 )/A.2.3.1 1 ) be provided with a low-duty cycle white light (of at least effective 0,75 cd) active during darkness and all other lighting conditions, visible to the human eye and flashing at a rate of 20 to 30 times per minute, with a flash duration of between 1 0 −6 s and 1 0 −1 s for the operating lifetime of the EPIRB to indicate its position for the nearby survivors and rescue units. This 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. No measured points (see Table 2) shall have an effective luminous intensity of less than 0,2 cd. NOTE 1 There can be areas of lower intensity at non measured points around the EPIRB and as the elevation increases to allow for mounting bushes, controls and the antenna, etc. and for the fact that, at higher elevation angles, the range to rescue units is reduced. i) The EPIRB shall (MSC.471 (1 01 )/A.2.3.1 1 ) be provided with a low-duty cycle light active during all lighting conditions detectable by all types of night vision devices for the operating lifetime of the EPIRB. The night vision low-duty cycle light shall have a dominant wavelength between 770 nm to 890 nm and shall have an average radiant intensity of at least 2,5 mW/sr, flashing at a rate of 20 to 30 times per minute, with a flash duration between 66 ms and 500 ms for the operating lifetime of the EPIRB. This night vision low-duty cycle light shall be mounted so that it produces light output over as great a portion of the upper hemisphere as is practical. The arithmetic mean of the light output over the upper hemisphere above 20° elevation shall not be less than 2,5 mW/sr. No measured points (see Table 3) shall have a radiant intensity of less than 0,25 mW/sr.