Características del sistema
2.3. Especificación de los requisitos del sistema
7.0 Knowledge and understanding of chemical cargo-related operations,
7.1 Loading and unloading plans 7.1.1 Explains why the plan should cover all
stages of the cargo operation and the detailed sequence of cargo and ballast transfer, including the requirements of adequate Personal Protective Equipment (PPE), antidotes and shipping documents required for safe loading of cargoes.
7.1.2 Explains important operational requirements from the IBC Code with respect to the cargo to be handled.
COMPETENCE 1 ABILITY TO SAFELY PERFORM AND MONITOR ALL CARGO
7.1.3 Explains the importance of correct
"Product name" and other relevant information necessary prior to preparing a loading plan.
7.1.4 Identifies requirements for inhibitors to take effect and where this
information is obtained from.
7.1.5 Explains why cargoes which are flammable or produce harmful vapours should not be loaded over the top.
7.1.6 Describes the precautions prior to loading over the top.
7.1.7 Explains the procedures for cargo sampling and the need for taking various cargo samples at different tank locations.
7.1.8 Explains how cargo samples should be safely drawn, handled and stored.
7.1.9 Describes procedures for connecting and disconnecting hoses and loading arms.
7.1.10 Explains the term 'cargo conditioning' with respect to the chemical trade.
7.1.11 Explains in general terms, the transport requirements for vegetable and animal oils and fats.
7.1.12 Prepares a loading and unloading plan taking into account the ship's stability and all other important factors and the emergency shutdown
procedure agreed upon between ship and terminal personnel.
7.1.13 Explains the procedure to commence loading and unloading.
7.1.14 Explains why loading and unloading operations should be pre-planned and the different cargo parcels be loaded and unloaded sequentially according to the plan.
7.1.15 Explains how inerting requirements for tank atmosphere control are maintained during unloading.
7.1.16 Explains requirements of chemical cargo unloading with respect to relevant stripping limits.
7.1.17 Describe procedures to follow upon completion of unloading.
7.2 Ballasting and deballasting
7.2.1 Explains the considerations affecting ballast quantity and the ballast water tanks to be used.
7.2.2 Explains the stages of ballasting and deballasting and the associated stresses.
7.2.3 Explains that ballast operations while alongside should be discussed with the terminal prior to commencement.
7.3 Tank cleaning operations / prewash operation
7.3.1 Explains why proper planning is required prior conducting tank cleaning operations.
7.3.2 Explains the contents of a tank cleaning plan for a chemical tanker.
7.3.3 Explains the importance of conducting a briefing to review the tank cleaning plan with all crew members involved, before starting tank cleaning
operations.
7.3.4 Explains why tank cleaning or gas freeing alongside should not take place without the express permission of the terminal and port authorities.
COMPETENCE 1 ABILITY TO SAFELY PERFORM AND MONITOR ALL CARGO
7.3.5 Describes the pre-cleaning checks which should be made prior commencing tank cleaning operations.
7.3.6 Describes the stages of tank cleaning.
7.3.7 Explains maximum allowed stripping quantity remaining on board after discharge for categories X, Y and Z substances, as per MARPOL.
7.3.8 Describes measures of control for category X substances.
7.3.9 Explains exemptions from mandatory prewashing requirements in
accordance with MARPOL Annex II.
7.3.10 Explains requirements for discharge to reception facilities and
concentration of substance in the effluent discharge to shore.
7.3.11 Describes action to be taken in case concentration of residues in the effluent of cargo during the mandatory prewash cannot be obtained.
7.3.12 Explains limitations on subsequent discharge of wash water into the sea.
7.3.13 Explains cleaning and discharging procedures for effluent discharge of solidifying and non-solidifying substances.
7.3.14 Explains washing procedures for high-viscosity and low-viscosity substances.
7.3.15 Explains tank-cleaning procedures for water-reactive cargoes.
7.3.16 Explains the requirements for special areas defined in MARPOL and implications for discharge of residues of noxious liquid
substances.
7.3.17 Explains slop tank discharge restrictions and requirements.
7.3.18 Explains wall wash test requirements and procedures including factors leading to the contamination of wall wash samples.
7.3.19 Explains passivation and pickling of stainless steel tanks.
7.3.20 Explains the reason for tank-washing operations and how the coating type effects the operations.
7.3.21 Describes tank-washing operations with portable and fixed machines.
7.3.22 Explains why tank washing can cause electrostatic hazards as a result of water mist, water slugs and the introduction of portable tank-washing machines into the tanks, and explains which measures to take.
7.3.23 Explains the precautions to be taken when tanks must be washed in a non-inerted atmosphere.
7.4 Tank atmosphere control
7.4.1 Explains tank inerting, blanketing and padding requirements for transporting chemicals in bulk.
7.4.2 Explains the impact of tank cleaning on chemical tankers when carried out in the following atmospheres:
- undefined or uncontrolled;
- too lean;
- too rich; and - inerted.
7.4.3 Explains methods of maintaining control of atmosphere during cargo operations.
COMPETENCE 1 ABILITY TO SAFELY PERFORM AND MONITOR ALL CARGO
7.4.4 Describes requirements for testing of tank atmosphere with regard to:
- oxygen content;
- flammable vapours; and - toxic vapours.
7.4.5 Explains the relationship between loading rates and ventilation capacity.
7.4.6 Explains the design of safe ventilation to minimize cargo vapours exposure to personnel.
7.4.7 Explains the limitations and risks of open-venting.
7.4.8 Explains when controlled venting is required in accordance with the IBC Code.
7.4.9 Describes vapour control and vapour recovery systems.
7.4.10 Explains vapour balancing.
7.4.11 Describes operating procedures and requirements for a vapour emission control system.
7.4.12 Explains and calculates pressure drop with respect to vapour collection system.
7.4.13 Explains the use of different vapour systems between the ship and the shore, and the documentation required.
7.5 Inerting
7.5.1 Explains inerting on chemical tankers.
7.5.2 Explains the use of the IBC Code in determining inerting requirements.
7.6 7.6.1
Gas-freeing
Explains the operational
considerations of gas freeing on a chemical tanker using portable or fixed ventilation systems.
7.6.2 Describes both displacement and dilution methods.
7.6.3 Explains safe procedures for gas- freeing after tank washing or cleaning by ventilation.
7.6.4 Discusses international and national regulations relevant for gas freeing operations.
7.7 Ship-to-ship transfers
7.7.1 Explains how the ship-to-ship (STS) transfer operations of a chemical tanker are carried out at anchor or underway.
B3
7.7.2 Describes the proper STS
equipment to be available on both ships.
7.7.3 Explains why proper attention needs to be paid to the difference in freeboard and listing of both ships while transferring cargo.
7.7.4 Explains how proper communication should be established and maintained between the ships.
7.8 Inhibition and stabilization requirements
7.8.1 Explains why care must be taken to ensure that reactive cargoes which require inhibition are sufficiently inhibited during the entire voyage.
7.8.2 Describes the inhibitor certificate.
COMPETENCE 1 ABILITY TO SAFELY PERFORM AND MONITOR ALL CARGO
7.8.3 Explains why some inhibited cargoes should not be carried in an inerted tank.
7.8.4 Explains why close monitoring of the associated cargo systems of inhibited cargo is necessary.
7.9 Heating and cooling requirements and consequences to adjacent cargoes
7.9.1 Discusses challenges related to stowage of heated or cooled cargo adjacent or close to e.g.:
- Inhibited cargoes;
- Volatile cargoes;
- Temperature-sensitive cargoes;
and
- Heated/cooled cargoes.
7.9.2 Explains the risks and dangers associated with poor monitoring of cargo temperatures for some chemical cargoes.
7.9.3 Identifies the possible dangerous reactions of some cargoes if adjacent to heated cargoes (polymerization, decomposition, thermal instability, evolution of gas).
7.9.4 Identifies dangers associated with carrying heated cargoes adjacent to highly volatile cargoes.
7.9.5 Explains why some cargoes with low boiling point may need to be cooled.
7.9.6 Describes different cooling or refrigeration systems for chemical tankers.
7.9.7 Explains the use of reference temperatures.
7.10
7.10.1
Cargo compatibility and segregation
Explains compatibility of chemical cargoes, reactive and non-reactive groups and the use of a compatibility chart.
7.10.2 Discusses cargo segregation with respect to reactive, toxic,
polymerizable, volatile, and odour-sensitive cargoes.
7.11 High-viscosity cargoes
7.11.1 Explains viscosity with respect to temperatures.
7.11.2 Explains why monitoring of unloading temperature of the cargo must be carried out.
7.12 Cargo residue operations
7.12.1 Describes requirements to comply with retention of cargo residues.
7.13 Operational tank entry 7.13.1 Explains that the ship's SMS
requires special procedures to be followed if entering an enclosed space.
7.13.2 Explains why prior to commencing sweeping operations the crew should be briefed of the dangers involved.
TOPIC 8 DEVELOPMENT AND APPLICATION OF CARGO-RELATED OPERATION PLANS,