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Vapour emission control system onboard chemical tankers

Where required, VEC is to be used and operated in accordance with IBC Code, local regulations, and instructions contained in the vessel’s VEC System Operation Manual and in conjunction with the requirements and provisions of the shore installation.

Masters and Officers must be aware that significant operational and safety implications are present, as the shore and the ship are effectively joined together as one unit.

chemical tanker navigation at sea
The primary hazards include:
Ship’s personnel are to make themselves fully aware of the operation of the VEC system on board. Reference to the approved operations manual is to be made. The transfer procedure, required by section 4.6.9 of this manual must contain a description of the VEC system as listed in 33 CFR 155.750 (d).

The full procedures for the use of the VEC system are to be clearly agreed at the pre-transfer meeting between the Terminal Representative and the Chief Officer. All tests and inspections required by 33 CFR 156.170(g) must be carried out prior to transfer operations. Checklist TNK 04 is to assist the responsible officer with VEC operations. This checklist is to be completed prior to commencement of any VEC operation.

NOTE: The VEC system must be inspected and approved/certified by the USCG prior to use in the USA. The TVEL/LOC will reflect this approval, being endorsed accordingly.

Related Info:

Ship to ship transfer guideline using VEC systems

Pre-cleaning /washing of cargo tanks

Practical tank cleaning methods for various noxious liquid cargo

Controlled discharge of tank washings of various chemical cargoes

Fixed and portable tank cleaning equipments

Handling various grade liquid chemicals during loading

How to prepare a cargo loading or discharge program ?

How to avoid solidification in cargo tanks ?

Cargo line clearance requirement for chemical tankers

Cargo segregation requirement for chemical tankers

Closed loading requirement of various grade liquid chemicals and related considerations

How to arrange disposal of tank cleaning waste ?

Restrictions on discharge cargo residue into sea

Retention of slops on chemical tankers

Handling self reactive chemicals

Handling of toxic chemical cargoes

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