12 In paragraph 2.2.1, after the third sentence,
the following new sentence is added:
13 The following new paragraph is added after
paragraph 2.2.1, and the existing paragraph 2.2.2 is renumbered as
paragraph 2.2.3:
-
"2.2.2 On ships constructed on or after 1 July 2014, the
operation of the automatic changeover switch or a failure of one of
the power supplies shall not result in loss of fire detection capability.
Where a momentary loss of power would cause degradation of the system,
a battery of adequate capacity shall be provided to ensure continuous
operation during changeover."
14 The existing paragraph 2.2.3 is deleted and
the following new paragraphs are added after the renumbered paragraph
2.2.3:
-
"2.2.4 The emergency source of power specified
in paragraph 2.2.1 above may be supplied by accumulator batteries
or from the emergency switchboard. The power source shall be sufficient
to maintain the operation of the fire detection and fire alarm system
for the periods required under chapter II-1, regulations 42 and 43,
of the Convention and, at the end of that period, shall be capable
of operating all connected visual and audible fire alarm signals for
a period of at least 30 min.
-
2.2.5 On ships constructed on or after 1 July
2014, where the system is supplied from accumulator batteries, they
shall be located in or adjacent to the control panel for the fire
detection system, or in another location suitable for use in an emergency.
The rating of the battery charge unit shall be sufficient to maintain
the normal output power supply to the fire detection system while
recharging the batteries from a fully discharged condition."
15 In paragraphs 2.3.1.2, 2.3.1.3 and 2.3.1.5,
the referenced standard "IEC 60092 505:2001" is replaced by "IEC 60092-504".
16 In paragraph 2.5.1.3, after the second sentence,
the following new sentence is added:
17 In paragraph 2.5.2, after the second sentence,
the following new sentence is added: