CHAPTER
XII.
ADDITIONAL SAFETY MEASURES FOR BULK CARRIERS
Amendments (Conference) 1997
With amendments
|
Date |
Document |
Entry into force |
|
2002 |
MSC.134(76) |
01.07.2004 |
Regulation 1.
Definitions For the purpose of this chapter:
1. Bulk carrier means a bulk carrier as defined in regulation
IX/1.6.
2. Bulk carrier of single side skin construction* means a bulk
carrier in which a cargo hold bounded by the side shell.
________
* Refer to MSC.89(71).
3. Length of a bulk carrier means the length as defined in the
International Convention on Load Lines in force.
4. Solid bulk cargo means any material, other than liquid or gas,
consisting of a combination of particles, granules or any larger pieces of
material, generally uniform in composition, which is loaded directly into the
cargo spaces of a ship without any intermediate form of containment.
5. "Bulk Carrier Bulkhead and Double Bottom Strength
Standards means "Standards for the Evaluation of Scantlings of the
Transverse Watertight Vertically Corrugated Bulkhead between the Two Foremost
Cargo Holds and for the Evaluation of Allowable Hold Loading of the Foremost
Cargo Hold" adopted by resolution 4 of the Conference of Contracting
Governments to the International Convention for the Safety of Life at Sea, 1974
on 28 November 1997, as may be amended by the Organization, provided that such
amendments are adopted, brought into force and take effect in accordance with
the provisions of article VIII of the present Convention concerning the
amendment procedures applicable to the Annex other than chapter I.
5. The term ships constructed has the same meaning as defined in
regulation II-l/l.1.3.1.
Bulk carriers shall comply with the requirements of this chapter
in addition to the applicable requirements of other chapters.
Regulation 3.
Implementation schedule
(This regulation
applies to bulk carriers constructed before 1 July 1999)
Bulk carriers to which regulations 4 or 6 apply shall comply with
the provisions of such regulations according to the following schedule, with
reference to the enhanced programme of inspections required by regulation
XI-1/2:
.1
bulk carriers which are 20 years of age and over on 1 July 1999, by the date of
the first intermediate survey or the first periodical survey after 1 July 1999,
whichever comes first;
.2
bulk carriers which are 15 years of age and over but less than 20 years of age
on 1 July 1999, by the date of the first periodical survey after 1 July 199,
but not later than 1 July 2002; and
.3
bulk carriers which are less than 15 years of age on 1 July 1999, by the date
of the first periodical survey after the date on which the ship reaches 15
years of age, but not later than the date on which the ship reaches 17 years of
age.
Regulation 4.
Damage stability requirements applicable to bulk
carriers
1. Bulk carriers of 150 m in length and upwards of single side
skin construction designed to carry solid bulk cargoes having a density of 1000
kg/m3 and above, constructed on or after 1 July 1999 shall, when
loaded to the summer load line, be able to withstand flooding of any one cargo
hold in all loading conditions and remain afloat in a satisfactory condition of
equilibrium, as specified in paragraph 3,
2. Bulk carriers* of 150 m in length and upwards of single side
skin construction, carrying solid hulk cargoes having a density of 1780 kg/m3
and above, constructed before 1 July 1999 shall, when loaded to the
summer load line, be able to withstand flooding of the foremost cargo hold in
all loading conditions and remain afloat in a satisfactory condition of
equilibrium, as specified in paragraph 3. This requirement shall be complied
with in accordance with the implementation schedule specified in regulation 3.
__________
* Refer to MSC.79(70).
3. Subject to the provisions of paragraph 6, the condition of
equilibrium after flooding shall satisfy the condition of equilibrium laid down
in the Annex to resolution A.320(IX) — Regulation Equivalent to Regulation 27
of the International Convention on Load Lines, 1966, as amended by resolution
A.514(13). The assumed flooding need only take into account flooding of the
cargo hold space. The permeability of a loaded hold shall be assumed as 0.9 and
the permeability of an empty hold shall be assumed as 0.95, unless a permeability
relevant to a particular cargo is assumed for the volume of a flooded hold
occupied by cargo and a permeability of 0.95 is assumed for the remaining empty
volume of the hold.
4. Bulk carriers constructed before 1 July 1999 which have been
assigned a reduced freeboard in compliance with regulation 27(7) of the
International Convention on Load Lines, 1966, as adopted on 5 April 1966, may
be considered as complying with paragraph 2.
5. Bulk carriers which have been assigned a reduced freeboard in
compliance with the provisions of paragraph 8 of the regulation equivalent to
regulation 27 of the International Convention on Load Lines, 1966 adopted by
resolution A.320(IX), as amended by resolution A.514(13), may be considered as
complying with paragraphs 1 or 2, as appropriate.
6. On bulk carriers which have been assigned reduced freeboard in
compliance with the provisions of regulation 27(8) set out in Annex В of the
Protocol of 1988 relating to the International Convention on Load Lines, 1966,
the condition of equilibrium after flooding shall satisfy the relevant
provisions of that Protocol.
Regulation 5.
Structural strength of bulk carriers
(This regulation
applies to bulk carriers constructed on or after 1 July 1999)
Bulk carriers of 150 m in length and upwards of single side skin
construction, designed to carry solid bulk cargoes having a density of 1000
kg/m3 and above, shall have sufficient strength to withstand
flooding of any one cargo hold in all loading and ballast conditions, taking
also into account dynamic effects resulting from the presence of water in the
hold, and taking into account the recommendations adopted by the Organization*.
____________
* Refer to resolution 3 on
Recommendation on Compliance with SOLAS Regulation XII/5, adopted by the 1997
SOLAS Conference.
Regulation 6.
Structural and other requirements for bulk carriers
(This regulation
applies to bulk carriers constructed before 1 July 1999)
1. Bulk carriers of 150 m in length and upwards of single side
skin construction, carrying solid bulk cargoes having a density of 1780 kg/m3
and above, shall comply with the requirements of this regulation in
accordance with the implementation schedule specified in regulation 3.
2. The transverse watertight bulkhead between the two foremost
cargo holds and the double bottom of the foremost cargo hold shall have
sufficient strength to withstand flooding of the foremost cargo hold, taking
also into account dynamic effects resulting from the presence of water in the
hold, in compliance with the Bulk Carrier Bulkhead and Double Bottom Strength
Standards. For the purpose of this regulation the Bulk Carrier Bulkhead and
Double Bottom Strength Standards shall be treated as mandatory.
3. In considering the need for, and the extent of, strengthening
of the transverse watertight bulkhead or double bottom to meet the requirements
of paragraph 2, the following restrictions may be taken into account:
.1
restrictions on the distribution of the total cargo weight between the cargo
holds; and
.2 restrictions
on the maximum deadweight.
4. For bulk carriers using either of, or both, the restrictions
given in paragraphs 3.1 and 3.2 above for the purpose of fulfilling the
requirements of paragraph 2, these restrictions shall be complied with whenever
solid bulk cargoes having a density of 1780 kg/m3 and above are
carried.
Regulation 7.
Survey of the cargo hold structure of bulk carriers
(This regulation
applies to bulk carriers constructed before 1 July 1999)
A bulk carrier of 150 m in length and upwards of single side skin
construction, of 10 years of age and over, shall not carry solid bulk cargoes
having a density of 1780 kg/m3 and above unless it has
satisfactorily undergone either:
.1 a periodical
survey in accordance with the enhanced programme of inspections required by
regulation XI-1/2; or
.2 a
survey of all cargo holds to the same extent as required for periodical surveys
in the enhanced survey programme of inspections required by regulation XI-1/2.
Regulation 8.
Information on compliance with requirements for bulk
carriers
1. The booklet required by regulation VI/7.2 shall be endorsed by
the Administration or, on its behalf, to indicate that regulations 4, 5, 6 and
7 as appropriate, are complied with.
2. Any restrictions imposed on the carriage of solid bulk cargoes
having a density of 1780 kg/m3 and above in accordance with the
requirements of regulation 6 shall be identified and recorded in the booklet
referred to in paragraph 1.
3. A bulk carrier to which paragraph 2 applies shall be
permanently marked on the side shell at amidships, port and starboard, with a
solid equilateral triangle* having sides of 500 mm and its apex 300 mm below
the deck line, and painted a contrasting colour to that of the hull.
_________
* Refer to MSC.89(71).
Regulation
9.
Requirements for bulk carriers not being capable of complying with regulation
4.2 due to the design configuration of their cargo holds
(This regulation
applies to bulk carriers constructed before 1 July 1999)
For bulk carriers being within the application limits of
regulation 4.2, which have been constructed with an insufficient number of
transverse watertight bulkheads to satisfy that regulation, Administration may
allow relaxation from the application of regulations 4.2 and 6 on condition
that they shall comply with the following requirements:
.1 for the
foremost cargo hold the inspections prescribed for the annual survey in the
enhanced programme of inspections required by regulation XI-1/2 shall be replaced by the inspections prescribed
therein for the intermediate survey of cargo holds;
.2
are provided with bilge well high water level alarms in all cargo holds, or in
cargo conveyor tunnels, as appropriate, giving an audible and visual alarm on
the navigation bridge, as approved by the Administration or an organization
recognized by it in accordance with the provisions of regulation XI-1/1; and
.3 are provided
with detailed information on specific cargo hold flooding scenarios. This
information shall be accompanied by detailed instructions on evacuation
preparedness under the provisions of Section 8 of the International Safety
Management (ISM) Code and be used as the basis for
crew training and drills.
Regulation 10.
Solid bulk cargo density declaration
1. Prior to loading bulk cargo on a bulk carrier, the shipper
shall declare the density of the cargo, in addition to providing the cargo
information required by regulation VI/2.
2. For bulk carriers to which regulation 6 applies, unless such
bulk carriers comply with all the relevant requirements of this chapter
applicable to the carriage of solid bulk cargoes having a density of 1780 kg/m3
and above, any cargo declared to have a density within the range 1250 kg/m3
to 1780 kg/m3 shall have its density verified by an accredited testing
organization*.
Regulation 11.
Loading instrument
(This regulation
applies to bulk carriers regardless of their date of construction)
1. Bulk carriers of 150 m in length and upwards shall be fitted
with a loading instrument capable of providing information on hull girder shear
forces and bending moments, taking into account the recommendation adopted by
the Organization**.
_________
* In verifying the density of
solid bulk cargoes, reference may be made to MSC/Circ.908 on a Uniform Methods
of Measurement of the Density of Bulk Cargoes.
** Refer to resolution 5 on
Recommendation on Loading Instruments, adopted by the 1997 SOLAS Conference.
2. Bulk carriers of 150 m in length and upwards constructed before
1 July 1999 shall comply with the requirements of paragraph 1 not later than
the date of the first intermediate or periodical survey of the ship to be
carried out after 1 July 1999.