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INTERNATIONAL MARITIME ORGANIZATION

IMO

E

SUB-COMMITTEE ON DANGEROUSGOODS, SOLID CARGOES AND CONTAINERS11th sessionAgenda item 4

DSC 11/4/XXDate

Original: English

AMENDMENTS TO THE BC CODE, INCLUDING EVALUATION OF PROPERTIES OF SOLID BULK CARGOES

Report of the Correspondence Group - Part 1

Submitted by Australia and Japan

SUMMARY

Executive summary: This document informs the Sub-Committee of the correspondence group's progress on clarification on the classification of Seed Cake, on a schedule for Direct Reduced Iron (DRI) Fines and on the amendments to the BC Code.

Action to be taken: Paragraph 11

Related documents:DSC 10/17, DSC 11/5/XX and DSC 11/5/YY

Introduction

1 The Sub-Committee, at its 10th session, established a correspondence group on mandatory application of the BC Code and on amendments to the BC Code.

2 The following Member Governments and consultative organizations participated in the group:

AUSTRALIA BRAZILCANADA DENMARKFINLAND FRANCEGERMANY GREECEITALY JAPANMARSHALL ISLANDS NETHERLANDSREPUBLIC OF KOREA RUSSIAN FEDERATIONSWEDEN UNITED STATESBIMCOINTERNATIONAL CHAMBER OF SHIPPINGINTERNATIONAL ASSOCIATION OF DRY CARGO SHIPOWNERS

For reasons of economy, this document is printed in a limited number. Delegates are kindly asked to bring their copies to meetings and not to request additional copies.

DSC 11/4/XX Page 2

3 The group was instructed to:

Mandatory application of the BC Code

.1 Redraft "Foreword" to explain the objective of the BC Code and its mandatory application;

.2 Draft a new section 1 which will cover the current "General Introduction", section 1 (Definitions), and will also include provisions on application and implementation of the Code and requirements for the carriage of a cargo, which is not listed in the BC Code;

.3 Examine the current text of sections 1 to 10 and appendix 1 of the BC Code and identify which parts should be mandatory and which parts should be recommendatory, bearing in mind that the proposed recommendatory parts should be limited to those parts which are not suitable for mandatory application (e.g., precautionary and/or informative provisions);

.4 Redraft the current text of the parts of the BC Code which are identified to be mandatory, if necessary to facilitate mandating with minimal text alterations;

.5 Identify if any operational parts of SOLAS chapters VI and VII should be replicated in the Code for ease of use;

.6 Prepare draft amendments to SOLAS chapters VI and VII and any other part of SOLAS, if required as consequential amendments, taking into account documents DSC 10/5/1 (Australia) and DSC 10/5/2 (Japan) and above .5, in order to mandate the BC Code;

Amendments to the BC Code

.7 Consider the clarification on the classification of Seed Cake (DSC 9/10/4) and advise the Sub-Committee accordingly;

.8 Consider the development of a schedule for Direct Reduced Iron (DRI) Fines to be included in the BC Code, taking into account document DSC 10/4/5 (Venezuela) and the discussion of the working group on the issue (DSC 10/WP.5, paragraphs 4 to 6);

.9 Examine the text of the BC Code and prepare draft amendments to the BC Code to improve the text, taking into account document DSC 10/4 (Japan); and

.10 submit a report to DSC 11.

4 This document provides the outcome of discussion on TORs 7, 8 and 9. The discussion on the other items are reported as follows:

Part 2 provides results on TOR 1, 2 and 6; and

Part 3 provides results on TOR 3 and 4.

Due to constraint in time, the group could not discuss TOR 5.

DSC 11/4/XX

Clarification on the classification of Seed Cake (TOR 7)

5 The correspondence group considered as a starting point the questions raised in DSC 9/4/10. The group determined that whilst the schedules are correct they are difficult to navigate and not intuitive. Therefore the work undertaken on these schedules endeavoured to clarify the use of the schedules, particularly where exemptions may be sought. The outcome of the group's work is contained at annex 1.

Schedule for Direct Reduced Iron (DRI) Fines (TOR 8)

6 During the working group at DSC 10, the essential discussion point on the requirements for this cargo was ventilation. Some members were of the opinion that continuous ventilation should be maintained and some other members were of the opinion that inerting operation was necessary, as required for DRI (B). Taking such discussion into consideration, the co-ordinator a prepared draft schedule for Direct Reduced Iron (DRI) Fines which basically required inerting operation and allowed ventilation provided that the cargo was specifically certified by competent authority. Though there were comments from one member, the group could not consider the schedule in depth.

7 The draft schedule for this cargo is set out in annex 1 to this document to provide basis for discussion at DSC 11. The Sub-Committee is invited to consider the requirements, in particular ventilation requirement, taking into account the draft set out in annex 2.

Draft amendments to the BC Code to improve the text (TOR 9)

8 The correspondence group examined the text of the BC Code and prepared the draft amendments to the Code as set out in annex 3 to this document based on the document DSC 10/4. The draft amendments were agreed by the group without any opposition. Other proposed amendments, which were not unanimously agreed, are set out in annex 4 to this document for further consideration at DSC 11.

9 The Sub-Committee is invited to approve the draft amendments set out in annex 3 and consider the proposed amendments set out in annex 4. Because such amendments should be adopted as early as possible, the Sub-Committee is further invited to send the Committee the draft amendments for adoption as early as possible.

10 In the correspondence group, requirements for cargoes categolized not into Group B were considered. On this issues, there was general comment as follows;

"There are some cargoes which are considered not to possess chemical hazards (categorized not into Group B), but to which certain requirements normally applied to Group B cargoes are applied. A list of such cargoes and requirements applicable thereto is attached. Therefore, it should be considered whether the above-mentioned requirements apply to such cargoes. If those requirements still need to apply, such cargoes should be categorized into Group B (current Group A cargo should be categorized into both Groups A and B). In this connection, the requirements provided in SOLAS regulation II-2/19 should be taken into account when preparing requirements for individual entries in order to keep their consistency."

Action requested of the Sub-Committee

11 The Sub-Committee is invited to note the progress of discussion and in particular to:

DSC 11/4/XX Page 4

.1 consider the outcome of the group's work for clarification on the classification of Seed Cake set out in annex 1; (paragraph 5)

.2 consider the requirements, in particular ventilation requirement, and develop schedule for Direct Reduced Iron (DRI) Fines taking into account the draft schedule set out in annex 2; (paragraph 7)

.3 approve the draft amendments set out in annex 3; (paragraph 9)

.4 consider the proposed amendments set out in annex 4, taking into account the comment in paragraph 10; (paragraph 9 and 10)

.5 send the Committee the draft amendments, as early as possible, to improve the text of the BC Code;

and take action as appropriate.

Further actions are requested of the Sub-Committee by the other parts of the report of the Correspondence Group.

* * *

DSC 11/4/XX

ANNEX 1

Outcome of the group's work for clarification on the classification of Seed Cake

Issue/Observation Action

1

Toasted meal is not included as a SEED CAKE UN 2217 commodity.

This is an editorial omission.Add new text "TOASTED MEALS" after SUNFLOWER SEED in DESCRIPTION of SEEK CAKE UN 2217

2

SEED CAKE UN 2217 that does not meet the criteria for an exemption can meet the criteria for an exemption as a SEED CAKE UN 1386 (b) cargo. What then does an exempted cargo become?

The group agreed that this is a confusing area and that the provision could be clarified with the addition of a new paragraph after the last paragraph in DESCRIPTION "Exempt cargoes shall follow the provisions as set out in the schedule for SEED CAKE (non-hazardous)."

3

There is confusion in the interpretation of the Seedcake a, b & c schedules as a result of the descriptions attaching to the UN numbers.

The majority of group members agreed that although the descriptions attaching to the UN numbers can cause confusion in their interpretation they are correct and at this stage there is no requirement to take things further or to make suggestions for change to the UNSCOE on TDG.N.B. IMDG Code SP 929 does not permit exemption for the same product when shipped in containers.

4

Navigation around the schedules is not user friendly and in some cases the layout of identical provisions is not the same from schedule to schedule.

Changes made to the schedules under other areas in this Annex go some way to improving the navigation around the schedules.

BIMCO PAPER DSC 9/4/10

5

Issue 1Two interpretations are sought regarding the definition of Seedcake (b).Both of the scenarios illustrated are capable of defaulting to Seedcake (a), which if the Seedcake is solvent extracted should not be possible.

The group agreed that the description, whilst not very clear was not incorrect. Furthermore it was felt that changes to the BCSN should not be sought at this stage. The group agreed that the correct interpretation was that the oil content must be less than 10% and that where the amount of moisture present exceeds 10% the combined oil and moisture must be less than 20%.None – see also (3).

6 Issue 21st ClarificationNo criteria are listed for commodities to be regarded as Seedcake (d). From the flow chart it appears that any commodities that have been solvent extracted and contain not

The majority of group members agreed that SEED CAKE (non-hazardous) is essentially those cargoes that are exempted under schedules UN 1386(b) and UN 2217. Therefore no oil or moisture content

DSC 11/4/XXANNEX 1Page 2

more than 1.5% oil and not more than 11% moisture will be classed as Seedcake (c).

description is required.Add the following text to the first line of DESCRIPTION"The provisions of this schedule apply to solvent extracted rape seed meal, pellets, soya bean meal cotton seed meal and sunflower seed meal containing not more than 4% oil and 15% oil and moisture combined when substantially free from flammable solvents."Delete all products from the DESCRIPTION except bar those listed for exemption.

7

Issue 22nd ClarificationSeed cake (d) reads, inter-alia, "requires a certificate from a competent authority or shipper stating that the requirements for exemption are met as set out in the Schedules for Seed cake (b) and (c)".This means that a certificate from either a competent authority or shipper will do. BIMCO believes that this is not the intention of the Code, otherwise it will be a conflict of interest for the shipper to have this authority to issue certificates for his own cargoes.

The majority of group members agreed that the exemption provisions for SEED CAKE UN 1386(b) and UN 2217 should be harmonized.SEED CAKE UN 2217Retain existing text "substantially free from flammable solvent" in the DESCRIPTION.SEED CAKE, containing vegetable oil UN 1386(b).Add new text "substantially free from flammable solvent" in the DESCRIPTION.

8

Issue 23rd ClarificationThe certificate mentioned above is that required for all seed cake (d) cargoes, when the exemptions referred to, if the understanding is correct, really relate only to certain exempted cargos in Seed cakes (b) and (c)?

The group was unable to reach agreement on discussions in this area.

9 Issue 3Oil bearing seeds e.g. sunflower seed, soya beans are all listed in the Index of the draft revised BC Code in the following manner:Index of Materials in the Draft revised BC Code (extract):¦ Materials ¦ Group ¦ Page Number+-----------------------+--------+--------------Sunflower seed ¦ B or C ¦ see Seed cake (type a,b,c or d)For the purpose of highlighting the problem, sunflower seed will be used as an example. Based on the index above, BIMCO's interpretation would be that sunflower seed is in either Group B or C and reference should be made to seed cakes. So, if one is

Make following changes in Index:"Sunflower seed, meal, cake, expellers or pellets (See Seedcake).""Cotton seed, meal, cake, expellers or pellets (See Seedcake).""Soyabean, meal, cake, expellers or pellets (See Seedcake)."See also response to (6).The group agreed that further consideration was necessary for cotton seed cargoes.

DSC 11/4/XXANNEX 1

Page 3

transporting sunflower seed, its carriage will have to be read in conjunction with that of the seed cake requirements since there is no entry catering specifically to sunflower seed itself.This poses a few problems:The definition of seed cake in the BC Code states that seed cake is "residue remaining" after oil has been extracted, either mechanically or by a solvent process from the oil-bearing seeds and the seed cake forms are meal, oily, oil cake, seed expellers, oily, etc. But sunflower seed itself is not a seed cake, especially if we are referring to sunflower seeds that have not gone through the oil extraction process, mechanically expelled or solvent extracted.1st clarification sought:Should the carriage requirements of sunflower seed follow that of the seed cake categories?2nd clarification sought:The deletion of cotton seed, listed in the Index of the current BC Code (see below), from the Index of the revised draft BC Code.Index of Materials in the current BC Code (extract):¦ Materials ¦Appendix¦+-----------------------------+--------+COTTON SEED, MEAL, CAKE, ¦ B & C ¦¦ EXPELLERS or PELLETS ¦ (see SEED CAKE)Based on the current index, cotton seed’s carriage requirements would have to follow that of the seed cake entries, highlighting the problem raised in (i). This problem is further exacerbated by the fact that there is a cargo named as "fuzzy cotton seed", described by the Australian Maritime Safety Authority (AMSA) as cotton seed with short cotton fibres adhering to the kernel after about 90% of the cotton has been removed mechanically (ref: AMSA Marine Notice Circular 8/2001, attached as annex). Fuzzy cotton seed has also been found to have an oil content not exceeding 20.5% and moisture content not exceeding 9 percent. Based on the above interpretation, one would deduce that it should fall under the Appendix B, seed cake category (a), UN No.1386 and IMO-classed 4.2 - a dangerous cargo. But AMSA has not classified it as such and instead, labelled it as a separate cargo by itself, an MHB cargo with carriage


requirements specifically prescribed for its transport - perhaps an indication that fuzzy cotton seeds should not fall under the seed cake categories under the existing BC Code? Also, cotton seeds that are not fuzzy, i.e. smooth cotton seeds should really be governed by the Grain Code and that could perhaps be distinguished if indeed a reclassification is necessary.3rd clarification sought:The carriage requirements of cotton seed.Soya bean is classified in the same manner as sunflower seed in the draft revised BC Code – under "seed cake".

10

However, it is not classified as a dangerous cargo in Thomas Stowage, "The Properties and Stowage of Cargoes".

Whilst it is correct that Thomas’ Stowage does not refer to the IMDG Code for Soya beans, under the entry for Soya Bean Cake it does refer to the Code.

The correspondence group used the following flow chart to assist them in their consideration of exempted cargoes.

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Page 5

M

EC

HAN

ICAL

LYE

XPE

LLED

OIL

>=

10%

OIL

+M

OIS

TUR

E >

= 20

%

1

OIL

<=

10%

????

?

SE

EDC

AK

E A

OIL

<=

4%

SEE

K G

UID

ANC

E

MO

ISTU

RE

< 10

%M

OIS

TUR

E10

% >

=< 2

0%

SEE

DC

AKE

B

YES

YES

NO

NO

NO

YES

YES

YES

YE

S

NO

NO

NO

YE

S

NO

YE

S

YE

S

OIL

<=

1.5%

MO

ISTU

RE

< 11

%1

EXE

MP

TIO

NS

UB

STA

NTI

ALL

YFR

EE F

RO

MFL

AMM

ABLE

SOLV

ENT

YES

YES

YES

NO

NO

SEE

DC

AKE

C

OIL

+M

OIS

TUR

E <

= 15

%

NO

NO

YES

NO

SEED

CA

KE

FLO

WC

HA

RT

1R

ape

seed

mea

l, pe

llets

Soy

a be

an m

eal

Cot

ton

seed

mea

lS

unflo

wer

see

d m

eal

SO

LVEN

TE

XTR

AC

TED

* * *

DSC 11/4/XX

ANNEX 2

Draft schedule for DRI (A) Fines

DIRECT REDUCED IRON (A) FINES(DRI Fines, Metallic HBI Fines, Orinoco Iron Remit Fines, Remit Fines, HBI Fines, Black Sand, Iron Sand, Orinoco Remit Fines in Bulk)

DESCRIPTION

This cargo is insoluble and odorless material. A particulate generated as by-product during the process of producing DIRECT REDUCED IRON (DRI), Briquetted Hot-moulded. This material has a temperature below 65°C at the time of being generated and has a density under 3.0 g/cm³. DRI Fines are capable of producing greater volumes of hydrogen gas than "DRI (A) Briquette, Hot moulded" particularly if the DRI Fines come in contact with water (DRI Fines are typically stored outdoors and have a moisture content in the 5 % range). The increased hydrogen gas generation capability of DRI Fines is due to the fact that this cargo is porous, has lower metallic iron content and will therefore more readily oxidize in contact with oxygen and water than other "DRI (A) Briquette, Hot moulded".

CHARACTERISTICS

ANGLE OF REPOSE BULK DENSITY (kg/m3 ) STOWAGE FACTOR (m3/t)Not applicable 2500 –2850 0.35-0.40

SIZE CLASS GROUPDiameter less than 4 mm MHB B

HAZARD

This cargo in contact with water (fresh and salty water), emits hydrogen gas and heat. The hydrogen gas can form explosive mixtures in the cargo hold when the concentration of gas exceeds 4% by volume. Temporary self-heating of about 60°C may be expected after material handling in bulk.

STOWAGE AND SEGREGATION

"Separated from" goods of classes 1 (division 1.4), 2, 3, 4 and 5 and class 8 acids in packaged form (see IMDG Code).

"Separated from" solid bulk materials of classes 4 and 5.

"Separated longitudinally by intervening complete compartment or hold from" good of class 1.

Boundaries of compartments where DRI Fines are carried should be resistant to fire and passage of water.

Clean and dry without any residue of previous cargoes. Bilges should be sift-proof and kept dry during the voyage. Where possible adjacent ballast tanks, other than double-bottom tanks, should be kept empty.

WEATHER PRECAUTIONS

Do not load cargo during any precipitation; keep dry and close hatches that are not being worked.


During loading, only one hold at a time should be opened.

LOADING

Trim in accordance with the cargo information required by SOLAS regulation VI/2. If any doubt exists, trim reasonably level to the boundaries of the cargo space so as to minimize the risk of shifting, and to ensure that adequate stability will be maintained during the voyage.

Weather deck closures should be inspected and tested prior to loading to ensure integrity.

This cargo should not be accepted for loading if:

.1 the temperature of the cargo is 65°C (150°F) or higher; or

.2 the moisture content of the cargo is 5 % or higher.

PRECAUTIONS

A competent person recognized by the national Administration of the country of shipment should certify to the ship's master that the DRI Fines are suitable to load. Shippers should certify that the material conforms with the requirement of this Code, and inform the master about the characteristics of the cargo and its correct handing during the voyage.

Prior to shipment, this should be aged for at least 72 hours, or treated with an air passivation technique, or some other equivalent method that reduces the reactivity of the material to at least the same level as the aged product. Furthermore, the use of small piles of DRI Fines during storage will expose more of the product to the atmosphere and will allow the oxidation process to stabilize DRI Fines.

Neither fresh material nor reactive material such as re-mit (material not fully processed) should be loaded on a ship.

Cargo spaces for this cargo should be sealed to prevent ingress of hydrogen into spaces adjacent to the cargo spaces.

"NO SMOKING" signs should be posted on decks and in areas adjacent to the cargo spaces and no naked lights should be permitted in these spaces. No smoking, burning, cutting, chipping or other hot work should be allowed in the vicinity of cargo spaces containing this cargo.

During loading and discharging of this cargo, electrical communication instruments, sensitivities of which are easily affected by adhesion of the cargo, such as radar scanner, antennas of radio, VHF, AIS, and GPS, should be protected from this cargo, by cover sheet or any other suitable method, because this cargo may stick on these instruments and affect the functions of these instruments.

VENTILATION

(Requirements for inerting operation.)

Cargo spaces should be maintained under an inert atmosphere throughout the duration of the voyage. Prior to loading, provisions shall be made to introduce the inert gas at tank top level so

DSC 11/4/XXANNEX 2

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that the whole of the stow can be maintained at a oxygen level less than 5% and a hydrogen level less than 1% throughout the voyage. Do not ventilate.

The requirement to maintain an inert atmosphere may be waived if agreed to by the competent authorities of the countries concerned, provided that the hydrogen gas concentration is continuously monitored and continuous mechanical ventilation is maintained throughout the duration of the voyage to remove the explosive hydrogen gas from the cargo spaces.

(Requirements allowing ventilation instead of inerting operation)

[Unless specifically certified by the competent person recognized by the national Administration of the country of shipment, prior to loading, provision should be made to introduce the inert gas at tank top level so that the whole of the stow can be maintained at a oxygen level less than 5% throughout the voyage and do not ventilate.

In the case that the competent person recognized by the national Administration of the country of shipment certifies that the cargo can be carried without inerting operation, mechanical continuous ventilation should be kept, unless the cargo hold is kept under inert atmosphere, in accordance with the following requirements.

.1 The gas concentration should be monitored continuously and remove the generated hydrogen, as necessary;

.2 To maintain the concentration of hydrogen in the cargo hold for this cargo at sufficiently low, the cargo hold should be arranged or equipped with the methods for surface ventilation under all weather condition without the significant ingress of water into the cargo hold.

.3 Accordance with the result of the measurement of hydrogen gas concentration (see CARRIAGE), when it reached to a certain level or significant increase of concentration of hydrogen was observed, the cargo hold should be ventilated for reasonable period.]

CARRIAGE

Suitable detectors for quantitative measurements of oxygen and hydrogen should be on board.

The hydrogen detectors should be suitable for use in an inert atmosphere. Regularly monitor the concentration of oxygen and hydrogen in the cargo holds. Record the value of the measurements and keep them in the ship until this cargo would be discharged.

Preventive measures for spark should be taken during gas monitoring, in particular, opening sampling hole.

Cargo spaces containing this cargo may become oxygen-depleted and all due caution should be exercised upon entering such compartments. Before a person enter the cargo hold, the concentration of oxygen should be measured to ensure the atmospheric circumstances is safe for working.

Hatch covers should be sealed by suitable method, and all ventilators and other openings should be closed except for the time of ventilation, to prevent free flow of moisturized air entering into


the cargo hold with the cargo.

Water collected in the bilge well shall be stripped out through the bilge line so as to keep the cargo hold dry during the voyage.

DISCHARGE

Prior to opening the hatch covers, the concentration of hydrogen in the cargo hold shall be measured. When the concentration of hydrogen exceeds 1% by volume, the cargo hold should be ventilated prior to opening the hatch covers.

CLEAN UP

Thoroughly wash down electrical communication instruments, sensitivities of which are easily affected by adhesion of the cargo, such as radar scanner, antennas of radio, VHF, AIS, and GPS.

***

DSC 11/4/XX

ANNEX 31

Draft amendments to the BC Code

Un-necessary varieties in expression of requirements in appendix 1

1 In the columns for "STOWAGE & SEGREGATION" in the schedules for the following cargoes, the requirements for segregation from foodstuffs and class 8 liquids are replaced by the following text:

""Separated from" foodstuffs and all class 8 materials (goods in packaged form and solid bulk materials)."

ALUMINIUM FERROSILICON POWDER UN 1395ALUMINIUM SILICON POWDER, UNCOATED UN 1398FERROSILICON UN 1408FERROSILICON (MHB)SILICOMANGANESE (low carbon)ZINC ASHES UN 1435ALUMINIUM SMELTING BY-PRODUCTS OR ALUMINIUM REMELTING BY-PRODUCT UN 3170

2 In the column for "STOWAGE & SEGREGATION" in the schedule for FLY ASH, the existing text is replaced by the following text:

""Separated from" foodstuffs."

3 In the column for "STOWAGE & SEGREGATION" in the schedule for MAGNESIA (UNSLAKED), the existing text is replaced by the following text:

""Separated from" all packaged dangerous goods and solid bulk cargoes which possess a chemical hazard."

4 In the columns for "STOWAGE & SEGREGATION" in the schedules for the following cargoes, the existing texts are replaced by the following text:

"No special requirements other than prescribed in section 9.3 of this Code."

SEED CAKE, containing vegetable oil UN 1386 (a)SEED CAKE, containing vegetable oil UN 1386 (b)SEED CAKE UN 2217

5 In the columns for "HOLD CLEANLINESS" in the schedules for the following cargoes, the existing texts are replaced by the following text:

"Clean and dry without any residue of previous cargoes."

ALUMINIUM SILICON POWDER, UNCOATED UN 1398CHARCOALCOPRA (dry) UN 1363

1 The explanation of each amendment is not included in the annex. Please contact S.OTA, Japan, for further information: [email protected]


DIRECT REDUCED IRON (A)FISHMEAL (FISHSCRAP), STABILIZED UN 2216FLY ASHLABRADORITELIME (UNSLAKED)MAGNESIA (UNSLAKED)PELLETS (concentrates)PYRITES, CALCINED (Calcined Pyrites)SALTSANDZINC ASHES UN 1435

6 In the column for "HOLD CLEANLINESS" in the schedule for DIRECT REDUCED IRON (B), the existing texts are replaced by the following texts:

"Clean and dry without any residue of previous cargoes. Wooden fixtures such as battens, etc., should be removed."

7 In the column for "HOLD CLEANLINESS" in the schedule for DIRECT REDUCED IRON (B), the following text is added:

"Bilges should be sift-proof and kept dry during the voyage."

8 In the schedule for PYRITES, CALCINED (Calcined Pyrites), the text "Bilges should be clean, dry and covered with burlap to prevent ingress of cargo." in the column for "PRECAUTIONS" is deleted and the following text is added in the column for "HOLD CLEANLINESS":

"Bilges should be sift-proof and kept dry during the voyage."

9 In the columns for "WEATHER PRECAUTIONS" in the schedules for the following cargoes, the existing texts are replaced by the following text:

"Do not handle cargo during precipitation, keep dry and close hatches that are not being worked."

ALUMINIUM SMELTING BY-PRODUCTS OR ALUMINIUM REMELTING BY-PRODUCT UN 3170GYPSUMSALTWOOD PELLETS

10 In the schedule for IRON ORE, the following text in the column for "LOADING" is deleted:

"Loading of concentrates should be suspended during significant rain or snow and hatches should be closed.",

and the following text is added in the column for DESCRIPTION:

"Concentrates are different cargos (see IRON CONCENTRATE)."

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11 In the columns for "WEATHER PRECAUTIONS" in the schedules for the following cargoes, the words "or snow" are added after the word "rain", twice for each text, in the following text:

"Hatches should be closed in heavy rain if the moisture content of the cargo is sufficiently close to the TML that the rain could increase the moisture content beyond the TML."

COALCOAL SLURRYILMENITE CLAY

12 In the column for "WEATHER PRECAUTIONS" in the schedule for DIRECT REDUCED IRON (A) - LOADING, the words "or snow" are added after the word "rain" in the following text:

"Loading, including transfer from one ship to another should be suspended during rain or snow and hatches should be closed"

13 In the columns for "WEATHER PRECAUTIONS" in the schedules for the following cargoes, the words "or snow" are added after the word "rain" in the following text:

"May be loaded and discharged in rain or snow, unless the moisture content is very close to the transportable moisture limit."

FLUORSPAR;Mineral Concentrates;

14 In the column for "LOADING" in the schedule for DIRECT REDUCED IRON (A), the text "As the density of the cargo is extremely high, care should be taken to ensure that the cargo is evenly spread across the tanktop to equalize the weight distribution and minimize the concentration of fines." is replaced by the following texts:

"As the density of the cargo is extremely high, care should be taken to ensure that the cargo is evenly spread across the tank top (tanktop) to equalize the weight distribution. Hot-moulded briquettes should be loaded in a manner as to avoid a concentration of fines in localized areas in the cargo."

15 In the column for "LOADING" in the schedule for IRON ORE PELLETS, the following text is deleted:

Refer to sections 2 and 5 of this Code.

16 In the columns for "PRECAUTIONS" in the schedules for the following cargoes, the word "ingress" is deleted in the following text:

"Protect machinery, accommodation and equipment from dust ingress."

CEMENTCEMENT CLINKERSFLY ASH


PHOSPHATE (defluorinated)PYROPHYLLITETANKAGE

17 In the column for "PRECAUTIONS" in the schedule for ALUMINA, the words "accommodation, equipment and bilge wells" are replaced by the words "accommodation and equipment from dust" in the following text:

"Protect machinery, accommodation, equipment and bilge wells."

18 In the columns for "PRECAUTIONS" in the schedules for CHARCOAL and FLUORSPAR, the words "accommodation and bilge wells from dust" are replaced by the words "accommodation and equipment from dust" in the following text:

"Protect machinery, accommodation and bilge wells from dust."

19 In the column for "DISCHARGE" in the schedule for CEMENT CLINKERS, the following text is deleted:

"Make sure that machinery, accommodation and equipment is protected from dust."

20 In the column for "DISCHARGE" in the schedule for CHARCOAL, the following text is deleted:

"Protect machinery, accommodation and equipment from dust."

21 In the schedule for TAPIOCA, the following text in the column for "DISCHARGE" is moved into the column for "PRECAUTIONS" and the words "See PRECAUTIONS." are added in the column for "DISCHARGE":

"Protect machinery, accommodation and equipment from dust."

22 The following texts in the schedules for the following cargoes are replaced by the text "Persons involved in cargo handling should wear protective clothing, goggles and dust filter masks.":

.1 "Personnel involved in cargo handling should wear protective clothing, goggles and dust filter masks."

PHOSPHATE ROCK (calcined)PHOSPHATE ROCK (uncalcined)

.2 "Personnel involved in cargo handling should wear protective clothing and dust filter masks."

CARBORUNDUM

.3 "Persons involved in cargo handling should wear protective clothing, goggles and facemasks."

LEAD NITRATE UN 1469

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RADIOACTIVE MATERIAL, LOW SPECIFIC ACTIVITY (LSA-1) non-fissile or fissile-excepted UN 2912RADIOACTIVE MATERIAL SURFACE CONTAMINATED OBJECTS (SCO-1), non-fissile or fissile-excepted UN 2913TANKAGEVANADIUM OREZIRCONSAND

.4 "Persons involved in handling should wear coveralls, gloves, dust masks and goggles."

CASTOR BEANS or CASTOR MEAL or CASTOR POMACE or CASTOR FLAKE UN 2969

.5 "Persons involved in loading or unloading should wear goggles, gloves and dust filter masks."

AMMONIUM SULPHATE

.6 "Personnel involved in loading or discharging should wear protective clothing and dust filter masks."

PYRITES, CALCINED (Calcined Pyrites)

.7 "Persons involved in loading should wear protective clothing, goggles and dust filter masks (if not a closed circuit loading)."

CEMENTCEMENT CLINKERSFLY ASH

.8 "Persons involved in loading or discharging should wear overalls, goggles and face masks."

CRYOLITE

.9 "Personnel should wear protective clothing and goggles."

DIAMMONIUM PHOSPHATE (D.A.P.)

.10 "Protective clothing should be worn, including goggles and facemasks, by persons involved in loading and discharging."

FLUORSPAR

.11 "Persons involved in loading or discharging should wear protective clothing, gloves, dust masks and goggles."

PEAT MOSS

.12 "Persons involved in loading or unloading should wear dust masks when needed."


CHROMITE ORE

.13 "Wear goggles, dust mask, gloves and coverall when handling or discharging dusty cargo."

AMMONIUM NITRATE UN 1942

.14 "Wear goggles, dust mask, gloves and coverall when loading or discharging this material."

AMMONIUM NITRATE BASED FERTILIZER UN 2067AMMONIUM NITRATE BASED FERTILIZER UN 2071AMMONIUM NITRATE BASED FERTILIZER (non-hazardous)

.15 "Persons involved in cargo handling should wear goggles."

BROWN COAL BRIQUETTES

.16 "Wear goggles and masks during loading and discharging."

ALUMINA

23 In the schedule for TAPIOCA, the following text in the column for "DISCHARGE" is moved into the column for "PRECAUTIONS":

"Persons involved in cargo handling should wear protective clothing, goggles and dust filter masks."

24 The following texts in the schedules for the following cargoes are replaced by the text "Bilge wells should be clean, dry and covered to prevent ingress of cargo.":

.1 "Make sure bilge wells are dry and covered to prevent cargo ingress."

BARIUM NITRATE UN 1446LEAD NITRATE UN 1469SODIUM NITRATE UN 1498

.2 "Make sure bilge wells are clean and covered with burlap."

COAL

.3 "Make sure bilge wells are clean, dry and covered to prevent cargo ingress."

TANKAGE

.4 "Ensure hold bilge wells are dry, taped up and made sift proof."

CEMENT

.5 "Check bilge wells are clear and covered to prevent ingress of cargo."

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SAWDUST

.6 "Bilge wells should be clean, dry and covered to prevent the ingress of cargo."

Mineral Concentrates

.7 "Bilges should be clean, dry and covered with burlap to prevent ingress of cargo."

PYRITES, CALCINED (Calcined Pyrites)

.8 "Bilge wells should be clean and covered with burlap to prevent the ingress of cargo."

COKE BREEZE

.9 "Bilge wells should be clean, dry and covered with burlap to prevent ingress of cargo."

COAL SLURRY

.10 "Bilge wells should be clean, dry and covered to prevent cargo ingress."

SODIUM NITRATE AND POTASSIUM NITRATE MIXTURE UN 1499

.11 "Bilge wells should be dry and covered with burlap."

CEMENT CLINKERS

.12 "Bilge plates should be perforated and covered with two layers of burlap to protect bilge wells against sand ingress."

RUTILE SANDZIRCONSAND

25 The following texts in the schedules for the following cargoes are replaced by the text "Bilge wells should be covered to prevent ingress of cargo.":

.1 "Protect bilge wells against ingress."

BAUXITE

.2 "Cover bilge wells with burlap."

COKE

.3 "Make sure bilge wells are covered with burlap."

IRON ORE PELLETS

.4 "Make sure bilge wells are covered to prevent cargo ingress."


LIME (UNSLAKED)

.5 "Ensure hold bilge wells are well covered and protected to prevent ingress."

LIMESTONE

26 The text "Make sure bilge wells are clean and efficient." in the schedule for PEAT MOSS are replaced by the text "Bilge wells should be clean and dry."

27 The following texts in the schedules for the following cargoes are replaced by the text "Surface ventilation required.":

"Natural or mechanical surface ventilation."

PEAT MOSSPITCH PRILL

28 The following texts in the schedules for the following cargoes are replaced by the text "Hatches should be weathertight to prevent the ingress of water.":

.1 "Ensure that hatches are weathertight."

ILMENITE CLAY ("that" was missed.)SEED CAKE, containing vegetable oil UN 1386 (a)SEED CAKE, containing vegetable oil UN 1386 (b)SEED CAKE UN 2217SEED CAKE (non-hazardous)

.2 "Ensure that hatches remain weathertight."

METAL SULPHIDE CONCENTRATES

.3 "Ensure hatches remain weathertight."

Mineral Concentrates

.4 "Precautions should be taken to prevent water entering the holds."

AMMONIUM NITRATE UN 1942AMMONIUM NITRATE BASED FERTILIZER UN 2067AMMONIUM NITRATE BASED FERTILIZER UN 2071AMMONIUM NITRATE BASED FERTILIZER (non-hazardous)

.5 "Precautions should be taken to avoid water entering the holds."

WOOD PELLETS

29 In the column for "CARRIAGE" in the schedule for ZINC ASHES UN 1435, the text "A suitable detector for quantitative measurements of hydrogen should be on board." is replaced by the text "Suitable detectors for quantitative measurements of hydrogen should be on board.".

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30 In the column for "CARRIAGE" in the schedule for DIRECT REDUCED IRON (A), the text "A suitable detector for qualitative measurements of hydrogen should be on board." is replaced by the text "Suitable detectors for quantitative measurements of hydrogen should be on board.".

31 In the column for "CARRIAGE" in the schedule for DIRECT REDUCED IRON (B), the text "Suitable detectors for qualitative measurements of oxygen and hydrogen should be on board." is replaced by the text "Suitable detectors for quantitative measurements of oxygen and hydrogen should be on board.".

32 In the column for "CARRIAGE" in the schedules for FERROSILICON UN 1408 and for FERROSILICON (MHB), the text "Suitable gas detectors for quantitative measurements of hydrogen, phosphine and arsine should be on board." is replaced by the text "Suitable detectors for quantitative measurements of hydrogen, phosphine and arsine should be on board.".

33 In the column for "CARRIAGE" in the schedule for IRON OXIDE, SPENT or IRON SPONGE, SPENT UN 1376, the text "Suitable gas detectors for quantitative measurements of oxygen, hydrogen cyanide should be on board." is replaced by the text "Suitable detectors for quantitative measurements of oxygen, hydrogen cyanide should be on board.".

34 The following texts in the schedules for the following cargoes are replaced by the text "Keep a careful check that free water or a fluid condition does not appear on the surface of cargo.":

.1 "Check frequently cargo is not becoming fluid."

COAL SLURRY

.2 "Keep a careful check that cargo is not reaching a flow state."

COKE BREEZE

.3 "Keep a careful check that cargo is not becoming fluid."

ILMENITE CLAYMETAL SULPHIDE CONCENTRATESMineral Concentrates

35 The following texts in the schedules for the following cargoes are replaced by the text "If cargo has hardened trimming may be necessary to avoid formation of overhanging faces.":

.1 "If cargo has hardened trimming may be necessary to avoid the formation of overhanging faces."

SUPERPHOSPHATE (triple granular)

.2 "If cargo has hardened, trimming may be necessary to avoid the formation of overhanging faces."

AMMONIUM SULPHATE


POTASH

.3 "Trimming may be necessary to avoid the formation of overhanging cargo faces."

MONOAMMONIUM PHOSPHATE (M.A.P.)POTASSIUM CHLORIDE

36 The following texts in the schedules for the following cargoes are replaced by the text "Holds should be thoroughly cleaned and washed out to remove all traces of the cargo after discharge.":

.1 "Holds should be thoroughly cleaned and washed out to remove all traces of cargo."

AMMONIUM SULPHATE

.2 "Holds must be thoroughly cleaned and washed out to remove all traces after cargo discharge."

CASTOR BEANS or CASTOR MEAL or CASTOR POMACE or CASTOR FLAKE UN 2969

.3 "Sweep clean and thoroughly wash out holds and bilge wells."

POTASH

37 The following texts in the schedules for the following cargoes are replaced by the text "Avoid using water because of the danger of gas.":

.1 "Avoid using water because danger of gas."

ALUMINIUM FERROSILICON POWDER UN 1395ALUMINIUM SILICON POWDER, UNCOATED UN 1398

.2 "Avoid use of water because danger of gas."

ALUMINIUM SMELTING BY-PRODUCTS OR ALUMINIUM REMELTING BY-PRODUCT UN 3170

.3 "Avoid using water because of danger of gas."

FERROSILICON UN 1408FERROSILICON (MHB)ZINC ASHES UN 1435

38 The texts "No special precautions" in the column and schedules for the following cargoes are replaced by the text "No special requirements.":

PEAT MOSS CLEAN UPSUGAR PRECAUTIONSZIRCONSAND STOWAGE & SEGREGATION

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39 The description in the column for "HAZARD" in the schedule for AMMONIUM SULPHATE is replaced by the following texts:

"Dust may cause skin and eye irritation. Harmful if swallowed. Even though this cargo is classified as non-hazardous, it may cause heavy corrosion of framing, side shell, bulkhead etc. if sweating of cargo space occurs.This cargo is non-combustible or has a low fire-risk."

40 The description in the column for "HAZARD" in the schedule for POTASSIUM CHLORIDE is replaced by the following texts:

"Even though this cargo is classified as non-hazardous, it may cause heavy corrosion when wet.This cargo is non-combustible or has a low fire-risk."

41 The description in the column for "VENTILATION" in the schedule for POTASH is replaced by the following text:

"Do not ventilate."

42 The descriptions in the columns for "VENTILATION" in the schedules for PEANUTS (in shell) and TAPIOCA are replaced by the text "Do not ventilate." and the text "Ventilate and test the atmosphere before entering cargo spaces." is added in the columns for PRECAUTIONS in these schedules.

Note: Classification of these cargoes was discussed and member governments are invited to submit comments on classification of these cargoes.

43 The words "or hatch coaming" are added at the end of the following texts in paragraph 2.2.1 in the procedures for gas monitoring in the appendices of schedules for "BROWN COAL BRIQUETTES" and for "COAL":

"Two sample points should be provided per hold, one on the port side and one on the starboard side of the hatch cover."

44 The following text in the column for "HAZARD" in the schedule for COAL is deleted:

This cargo has a low fire-risk.

45 The "EMERGENCY PROCEDURES" is deleted in the schedule for AMMONIUM NITRATE BASED FERTILIZER (non-hazardous) and the following requirement is added in the column for PRECAUTIONS:

"Protective clothing (boots, gloves, coveralls, and headgear) and self-contained breathing apparatus should be on board. EMERGENCY PROCEDURES for AMMONIUM NITRATE BASED FERTILIZER UN 2071 should be followed in case of emergency."

46 In the column for "PRECAUTIONS" in the schedule for IRON ORE, the following text is replaced by the text "No special requirements.":

"Normally, loading rates can be very high; preplanning of ballasting operation is


essential."

47 In the column for "DISCHARGE" in the schedule for ALUMINA, CALCINED, the following text is replaced by the text "See PRECAUTIONS.":

48 The text in the columns for "DISCHARGE" in the schedules for CEMENT is replaced by the following text:

"If using grabs and not discharging in a closed circuit system ensure the vessel is again protected against dust and personnel are wearing the appropriate protective clothing, goggles and dust filter masks."

49 Appendix 6 is deleted and the following appendices are renumbered accordingly.

50 In the INDEX (at the end of the Code), the word "MAGNETITE" is replaced by "Magnetite" and add the words "see IRON CONCENTRATE (pellet feed, sinter feed)" in the column for "REFERENCE".

51 In the INDEX (at the end of the Code), the words "see MAGNETITE" in the row for "Magnetite-taconite" is replaced by the words "see IRON CONCENTRATE (pellet feed, sinter feed)".

52 In the list of BCSN in the schedule for "Mineral Concentrates", the words "NEFELENE SYENITE" are replaces by "NEFELINE SYENITE (mineral)". (This amendments is applicable only to MSC.193(79) in the report of meeting (MSC 79/23/Add.4 ANNEX 40) and not applicable to sales publication.)

53 For the material assigned to UN 3170:

.1 in appendix 1, the BCSN "ALUMINIUM SMELTING BY-PRODUCTS OR ALUMINIUM REMELTING BY-PRODUCT UN 3170" is replaced by "ALUMINIUM SMELTING BY-PRODUCTS or ALUMINIUM REMELTING BY-PRODUCTS UN 3170" (This amendments is applicable only to MSC.193(79) in the report of meeting (MSC 79/23/Add.4 ANNEX 40) and not applicable to sales publication.);

.2 in Appendix 5, i.e., MSC/Circ.1146, "ALUMINIUM SMELTING BY-PRODUCTS, UN 3170" is also replaced by "ALUMINIUM SMELTING BY-PRODUCTS or ALUMINIUM REMELTING BY-PRODUCTS UN 3170" and relevant footnote is deleted;

.3 in the INDEX (at the end of the Code), one more row is added for the BCSN "ALUMINIUM REMELTING BY-PRODUCTS, UN 3170", in GROUP "B" and without REFERENCES.

54 In paragraph 1.1 in appendix 3, the BCSN "BORAX, anhydrous" is replaced by "BORAX, ANHYDROUS".

55 In the INDEX (at the end of the Code), the row for "IRON PYRITES" (GROUP C) is deleted.

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56 In the column for CHARACTERISTICS in the schedule for "FERROSILICON", the description on subsidiary risk class 6.1 is added.

57 The description in the column for "HAZARDS" in the schedule for AMMONIUM NITRATE UN 1942 are replaced by the following texts:

"A major fire aboard a ship carrying these materials may involve a risk of explosion in the event of contamination (e.g. by fuel oil) or strong confinement. An adjacent detonation may also involve a risk of explosion. If heated strongly, they decompose, giving off toxic gases and gases which support combustion.

Fertilizer dust might be irritating to skin and mucous membranes."

58 From the heading of EMERGENCY PROCEDURES for CALCIUM NITRATE UN 1454, the words "the effect of" are deleted.

59 The description in the column for "STOWAGE & SEGREGATION" in the schedule for FERROSILICON (MHB) is replaced by the following texts:

"Segregation as required for class 4.3 materials. "Separated from" foodstuffs and all class 8 materials (goods in packaged form and solid bulk materials)."

60 The words "of this cargo" are added after the words "density" in the following text in the column for "LOADING" in the schedule for ANTIMONY ORE AND RESIDUE:

"As the density is extremely high, care should be taken to ensure that the cargo is evenly spread across the tank top to equalize the weight distribution."

61 In the column for STOWAGE & SEGREGATION in the schedule for PEANUTS (in shell), the following text is deleted:

"No special segregation precautions."

62 In paragraph 4.4.6, referenced paragraph number "4.6" is replaced by "4.7".

63 In paragraph 12.2.3, referenced document number "MSC/Circ.671" is relaced by "MSC/Circ.1146".

64 In table 1 in APPENDIX 5, i.e., MSC/Circ.1146, the name "SULPHUR (lump and coarse-grained powder), UN 1350" is replaced by "SULPHUR (lump and coarse grained) UN 1350".

* * *

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ANNEX 4

Proposed amendments for consideration by the Sub-Committee

1 The following text in paragraph 4.4.2 is not comprehensible:

" formation of a liquid base and shipping of cargo;".

The proposed amendment is as follows;

"likelihood of formation of a wet base (see paragraph 7.2.5 of this Code);"

2 The following text in the column for "WEATHER PRECAUTIONS" in the schedule for FLUORSPAR is not appropriate, if the cargo is classified into GROUP A:

May be loaded and discharged in rain, unless the moisture content is very close to the transportable moisture limit.

3 In the Code, the words "tank top" and "tanktop" are used. It is preferable to select the words and standardize the expression.

4 Both requirements on dust ingress and personal protection apply to the following cargoes:

ALUMINABIOSLUDGEBROWN COAL BRIQUETTESBORAX (PENTAHYDRATE CRUDE)CARBORUNDUMCEMENTCEMENT CLINKERSFLUORSPARFLY ASHLABRADORITEMANGANESE OREMARBLE CHIPSMONOAMMONIUM PHOSPHATE (M.A.P.)PERLITE ROCKPHOSPHATE ROCK (calcined)PHOSPHATE ROCK (uncalcined)PYRITE (containing copper and iron)PYRITES, CALCINED (Calcined Pyrites)RUTILE SANDSANDSTAINLESS STEEL GRINDING DUSTTANKAGETAPIOCAVERMICULITE

The requirement only on dust ingress applies to the following cargoes:

ALUMINA, CALCINEDALUMINA SILICAALUMINA SILICA, Pellets


ANTIMONY ORE AND RESIDUEBARYTESCHAMOTTECHARCOALDIRECT REDUCED IRON (A)DIRECT REDUCED IRON (B)GRANULATED SLAGIRONSTONEPEANUTS (in shell)PHOSPHATE (defluorinated)PYROPHYLLITESODA ASH

The requirements only on personal protection apply to the following cargoes:

AMMONIUM NITRATE UN 1942AMMONIUM NITRATE BASED FERTILIZER UN 2067AMMONIUM NITRATE BASED FERTILIZER UN 2071AMMONIUM NITRATE BASED FERTILIZER (non-hazardous)AMMONIUM SULPHATEBARIUM NITRATE UN 1446BORAX, ANHYDROUSCASTOR BEANS or CASTOR MEAL or CASTOR POMACE or CASTOR FLAKE UN 2969CHROMITE ORECRYOLITEDIAMMONIUM PHOSPHATE (D.A.P.)LEAD NITRATE UN 1469LIME (UNSLAKED)MAGNESIA (UNSLAKED)PEAT MOSSQUARTZITERADIOACTIVE MATERIAL, LOW SPECIFIC ACTIVITY (LSA-1) non-fissile or fissile-excepted UN 2912RADIOACTIVE MATERIAL SURFACE CONTAMINATED OBJECTS (SCO-1), non-fissile or fissile-excepted UN 2913VANADIUM OREZIRCONSAND

The application of these requirements should be examined again.

In the correspondence group, it was noted that it might be appropriate to add the requirements on personal protection into the schedules for cargoes to which only requirement on dust ingress applied. However, owing to the lack of information, the correspondence group could not reach to the agreement on this matter.

5 PEANUTS (in shell) and TAPIOCA may be GROUP B cargoes and the classification of these cargoes should be reviewed.

6 The texts in the columns for "VENTILATION" in entries for "WOODCHIPS" and "WOOD PULP PELLETS" are "see precautions". However, there are no concrete requirements

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for ventilation in the columns for "PRECAUTIONS" in these entries. This issue should be considered and appropriate amendment to the BC Code should be made.

In the column for PRECAUTIONS, the following is required:

"Entry of personnel into cargo spaces should not be permitted until tests have been carried out and it has been established that the oxygen content has been restored to a normal level."

In the Correspondence Group, it was discussed to replace the ventilation requirements with the words "Ventilation not required.", taking into account that above mentioned requirement might be enough for prevention of accident owing to oxygen depletion and it might not be necessary to require ventilation during voyage. However, owing to lack of information on these cargoes, the group could not reached to conclusion.

7 In the schedule for AMMONIUM NITRATE BASED FERTILIZER (non-hazardous) under HAZARDS, the following sentences appear:

"This cargo is non-combustible or with a low fire-risk.Even though this cargo is classified as non-hazardous, it will behave in the same way as the ammonium nitrate based fertilizers classified in class 9 under UN 2071 when heated strongly, by decomposing and giving off toxic gases."

Though this cargo is in Group C, the entry for this cargo has EMERGENCY PROCEDURES (The C.G. proposed to delete it.) similar to the entries for AMMONIUM NITRATE BASED FERTILIZER UN 2067 & UN 2071. The group of this cargo should be re-evaluated. If this cargo is categorized as group B, amendment to MSC/Circ.1146 may be necessary.

8 In the column for STOWAGE & SEGREGATION in the entries for AMMONIUM NITRATE BASED FERTILIZER UN 2067 & UN 2071, it is required that these cargoes should not be stowed immediately adjacent to any tank or double bottom containing fuel oil heated to more than 50°C. On the other hand, in the entry for AMMONIUM NITRATE UN 1942, there is no such requirement. Inclusion of such requirement into the entry for AMMONIUM NITRATE UN 1942 should be considered for consistency.

For AMMONIUM NITRATE BASED FERTILIZER UN 2067, the following is required:

"If the bulkhead between the cargo space and the engine-room is not insulated to class A-60 standard, the competent authority should approve an equivalent arrangement."

For AMMONIUM NITRATE BASED FERTILIZER UN 2071, the following is required:

"Fertilizers of this type should be stowed out of direct contact with a metal engine-room boundary. This may be done, for example, by using flame retardant bags containing inert materials or by any equivalent barrier approved by the competent authority. This requirement need not apply to short international voyages."

These requirements, including the application to AMMONIUM NITRATE UN 1942, should be reviewed for safety and consistency, taking into account that the insulation A-60 is required to prevent high rate of temperature rise of a surface but the insulation A-60 cannot be effective for preventing increase of temperature of a surface in the case that the other surface is heated long


time.

9 The following text in the column for "LOADING" in the schedule for PIG IRON should be reviewed:

"Bulldoze under overhangs and into the wings."

10 The following text in the column for "PRECAUTIONS" in the schedule for DIAMMONIUM PHOSPHATE (D.A.P.) should be reviewed:

"Cover cargo with plastic foil to minimize damage in case of water ingress."

11 The text just below the BCSN in the schedule for ILMENITE SAND is as follows:

"This cargo can be categorized as Group A or C. This entry is for cargo in Group C.".

On the other hand, there is no schedule for ILMENITE SAND of GROUP A.

Historically, "ILMENITE" was in appendix A, "ILMENITE SAND" was in appendix C and ILMENITE CLAY was proposed as liquefaction material. That was the reason of confusion and further consideration is necessary.

12 The following texts in the column for "PRECAUTIONS" in the schedule for PIG IRON should be reviewed:

"Check vessel stability and stresses.

Precautions which should be taken:

1. When the cargo is loaded, bulldozers may be used to trim the cargo reasonably level to the boundaries of the cargo space.

2. To avoid excessive stress, pig iron, if possible should not be stowed in the ‘tween decks’ unless in tubs or bolsters. The amount of the cargo depends on the ship’s stability requirements, bolsters or tubs available and ‘tween deck’ loading limitations.

3. Any bolsters or tubs stowed on steel decks require dunnage under them and suitable lashings."

In the Correspondence Group, deletion of these texts was proposed by the Co-ordinator. One member supported the proposal by the reason that these were loading requirements and were sufficiently covered by the other requirements. One member opposed the proposal by the reason that these texts could be important to advise captains and seafarers about the precautions in order to avoid cargo shifting and loss of stability.

13 In the columns for "DISCHARGE" in the schedules for the following cargoes, the following texts appear:

(Name of cargo) is hygroscopic and will cake if wet. If cargo has hardened trimming may be necessary to avoid formation of overhanging faces.

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BORAX (PENTAHYDRATE CRUDE)DIAMMONIUM PHOSPHATE (D.A.P.)FERTILIZERS WITHOUT NITRATES (non-hazardous)PHOSPHATE ROCK (calcined) POTASHRASORITE (ANHYDROUS) SUPERPHOSPHATESUPERPHOSPHATE (triple granular)UREA

It may be better to move the first sentence in the column for "HAZARDS".

14 VERMICULITE, depending on the origin, may contain fibrous asbestos. By this reason, it may be necessary to require certificate attesting that the asbestos content is less than 1 %. (NOTE: the WHITE QUARTZ is composed of silica that may cause silicosis.)

15 In the column for HAZARDS in the schedule for FLY ASH, only possibility of cargo shifting owing to aeration is referred to. Descriptions on irritation or toxicity may be necessary.

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