Chemical Tanker Operations

Rajeev Jassal
Rajeev Jassal Master

Both IBC and BCH codes apply to the chemical tanker.

Both these codes provide an international standard for the safe carriage in bulk by sea of dangerous chemicals and noxious liquid substances.

Both these codes prescribe the design and construction standards of ships and the equipm

Rajeev Jassal
Rajeev Jassal Master

So we want to measure hydrocarbons as a percentage of LEL and percentage of Volume. 

I have seen HC meters that measures %LEL and those that measure %Volume of HC. And I have seen explosimeters that measure hydrocarbons as both %LEL and %Volume.

These do not switch automatically from LEL to v

Rajeev Jassal
Rajeev Jassal Master

The first thing that we need to know is if the line content of the shore line will be blown into the ship's tanks or not.

This information is part of ship shore operational agreement with the loading master before the commencement of the loading operation.

Now let us say that in the ship sho

Rajeev Jassal
Rajeev Jassal Master

The first point that we need to clarify is "if this disposal would come under annex V or Annex I?

If it had to come under Annex V, there is only one category that the cargo sludge can fall into. That category is "Cargo Residues".

Let us see how Annex V defines cargo residues?

Cargo

Rajeev Jassal
Rajeev Jassal Master

I had written a blog on loading TDI on the chemical tanker. Since MDI comes in the same category as TDI, the guide would be applicable to MDI too.

Here is the blog post on TDI.

A complete guide of loading TDI on board a chemical tanker

If you have any specific question on loading of TDI/MDI, do no

Rajeev Jassal
Rajeev Jassal Master

Foam is made up of three things

  • Foam concentrate
  • Water
  • Air

Foam concentrate is also defined by proprtioning ratio the foam is required to be used. So when we have 6% Foam concentrate, it is most effective when 6 parts of foam concentrate is mixed with 94 parts of water to form foam solution

Rajeev Jassal
Rajeev Jassal Master

This is very interesting and unusual situation. For the sake of clarity, let us see what we are talking about here.

Normally, the line for annex 1 and annex 2 overboard discharge looks something like this. This is not the exact line up but just a basic line up

Rajeev Jassal
Rajeev Jassal Master

SOLAS gives the regulations and not detailed procedures. The requirement for not testing GMDSS equipment during cargo operations is given in the ISGOTT. As per ISGOTT

ISGOTT 2.7

During medium and high frequency radio transmission (300 kHz — 30 MHz), significant ene