IEC 61996:2000 pdf download

IEC 61996:2000 pdf download.Shipborne voyage data recorder (VDR) – Performance requirements – Methods of testing and required test results
1 Scope
This International Standard specifies the minimum performance requirements, technical characteristics and methods of testing, and required test results, for shipborne voyage data recorder (VDR) installations as required by chapter V of the International Convention for Safety of Life at Sea (SOLAS), as amended. It takes account of IMO resolution A.694 and is associated with IEC 60945. When a requirement in this standard is different from IEC 60945, the requirement in this standard takes precedence. This standard incorporates the applicable parts of the performance standards included in IMO Resolution A.861. NOTE All text of this standard, whose wording is identical to that of IMO Resolution A.861, is printed in italics, and the Resolution and associated performance standard paragraph numbers are indicated in brackets.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this International Standard. For dated references, subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this International Standard are encouraged to investigate the possibility
of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of IEC
and ISO maintain registers of currently valid International Standards.
IEC 60068-2-27:1987, Environmental testing – Part 2: Tests – Test Ea and guidance: Shock
IEC 60268-16:1998, Sound system equipment – Part 16: Objective rating of speech intelligi-
bility by speech transmission index
IEC 60651:1979, Sound level meters
IEC 60945:1996, Maritime navigation and radiocommunication equipment and systems –
General requirements – Methods of testing and required test results
IEC 61097-2:1994, Global maritime distress and safety system (GMDSS) – Part 2: COSPAS-
SARSAT EPIRB – Satellite emergency position-indicating radio beacon operating on 406 MHz –
Operational and performance requirements, methods of testing and required test results
IEC 61097-5:1997, Global maritime distress and safety system (GMDSS) – Part 5: Inmarsat-E –
Emergency position-indicating radio beacon (EPIRB) operating through the Inmarsat system –
Operational and performance requirements, methods of testing and required test results
IEC 61097-7:1996, Global maritime distress and safety system (GMDSS) – Part 7: Shipborne
VHF radiotelephone transmitter and receiver – Operational and performance requirements,
methods of testing and required test results
IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems –
Digital interfaces
IEC 61260:1995, Electroacoustics – Octave-band and fractional-octave-band filters
3.1.4 playback equipment (A.861/4.4)
equipment, compatible with the recording medium and the format used during recording,
employed for recovering the data. It includes also the display or presentation hardware and
software that is appropriate to the original data source equipment. Playback equipment is not
normally installed on a ship and is not regarded as part of a VDR within this standard
3.1.5 dedicated reserve power source (A.861/4.5)
secondary battery, with suitable automatic charging arrangements, dedicated solely to the
VDR, of sufficient capacity to operate it as required by 4.5.3
3.1.6 resolution
smallest detectable increment between two values
3.1.7 data
any item of information received by the VDR for recording, including numerical values, text and
audio or radar signals, except where specifically stated or the context dictates otherwise
3.1.8 activation of a suitable alarm
mutable audible alarm and persistent visual indication, given according to the requirements of
A.830, but with an audible level in the range of 55 dBA to 65 dBA
4 Performance requirements
4.1 General
Performance requirements described in this clause are specified by reference to the numbered
paragraphs of IMO Resolution A.861.
4.2 Purpose (A.861/1)
The purpose of a Voyage Data Recorder (VDR) is to maintain a store, in a secure and
retrievable form, of information concerning the position, movement, physical status, command
and control of a vessel over the period leading up to, and following, an incident having an
impact thereon. This information is for use during any subsequent investigation to identify the
cause(s) of the incident.
4.3 Operational requirements (A.861/5)
4.3.1 Design and construction (A.861/5.1.4)
The design and construction, which shall be in accordance with the requirements of resolution
A.694(17) and international standards acceptable to the International Maritime Organization
(IMO) , shall take special account of the requirements for data security and continuity of
operation as detailed in 4.4 and 4.5.
4.3.2 Maintenance of sequential records (A.861/5.1.1)
The VDR shall continuously maintain sequential records of pre-selected data items relating to
the status and output of the ship’s equipment, and command and control of the ship, referred to
in 4.6.
4.3.3 Co-relation in date and time (A.861/5.1.2, 5.4.1)
To permit subsequent analysis of factors surrounding an incident, the method of recording shall
ensure that the various data items can be co-related in date and time during playback on
suitable equipment.
The recording method shall be such that the timing of all recorded data items can be derived
on playback with a resolution sufficient to reconstruct the history of an incident in detail
(see 4.6.1).