The International Certificate for the carriage of liquefied gases in bulk- A quick guide

igc-code-wide

This post  continues the Gas Carrier theme of the last posting. The certificate is a bit of a complex document, therefore so is this post. 

Information about this certificate is available in the IMO circular MSC 370 (93)

The Internationaligc-code Certificate for the Carriage of Liquefied Gases in Bulk  is carried by ships complying with the IGC code. For older ships complying with the GC code, then the Certificate of Fitness for the Carriage of Liquefied Gases in Bulk is required instead. See my last post for a summary of those codes.

For the IMO web page on the IGC code click here>

Why is the Certificate required?

To comply with the International Code for the Construction and equipment of ships carrying liquefied gases in bulk. (IGC code)

Which ships require the certificate?

Ships built after July 2016, regardless of their size, engaged in the carriage of liquefied gases having a vapour pressure exceeding 0.28 MPa absolute at a temperature of 37.8°C and other products, as shown in chapter 19 of the IGC code, when carried in bulk.

Note: The Code applies to ships whose keels are laid, or which are at a similar stage of construction where:

  • Construction identifiable with the ship begins

and

  • Assembly of that ship has commenced, comprising at least 50 tonnes or 1% of the estimated mass of all structural material, whichever is less, on or after 1 July 2016.

What Surveys are required?

  • An initial survey before the ship is put in service or before the International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk is issued for the first time
  • A renewal survey at intervals specified by the Administration, but not exceeding five years
  • An intermediate survey within three months before or after the second anniversary date, or within three months before or after the third anniversary date of the certificate, which shall take the place of one of the annual surveys
  • An annual survey within three months before or after each anniversary date of the certificate

Note: This certificate is part of the  the Harmonised System of Survey and Certification (HSSC), and therefore theses periods are common with many other certificates.

 

What information is contained on the certificate?

  • Particulars of ship
    • Name of ship
    • Distinctive number or letters
    • IMO number
    • Port of registry
  • Cargo capacity (m3)
  • Ship type
  • Date on which keel was laid or on which the ship was at a similar stage of construction or, in the case of a converted ship, date on which conversion to a gas carrier was commenced
  • Compliance with amendments of the code
  • Exemptions from provisions of the Code

What does it certify?

  • That the ship has been surveyed in accordance with the provisions of section 1.4 of the Code
  • That the survey showed that the construction and equipment of the ship and the condition thereof are in all respects satisfactory and that the ship complies with the relevant provisions of the Code
  • That the following design criteria have been used:
    • Ambient air temperature
    • Ambient water temperature
    • Table of tank types/stress factors/Materials/MARVS
certgastable1

Tables from IMO MSC.370(93)

  • That the ship is suitable for the carriage in bulk of the following products provided that all the relevant operational provisions of the Code are observed

    Table of Products, Conditions of carriage  (tank numbers, etc.), Minimum certsgastable2temperature

  • Modifications of  provisions of the Code in respect of the ship
  • That the ship shall be loaded:
    • Only in accordance with loading conditions verified compliant with intact and damage stability requirements using the approved stability instrument
    • Where a dispensation permitted by the Code applies and the approved stability instrument is not fitted, loading shall be made in accordance with one or more of the following approved methods:
      • In accordance with the loading conditions provided in the approved loading manual
      • In accordance with loading conditions verified remotely using approved means
      • In accordance with a loading condition which lies within an approved range of conditions defined in the approved loading manual referred to above
      • In accordance with a loading condition verified using approved critical KG/GM data defined in the approved loading manual
    • In accordance with the loading limitations appended to this Certificate
  • Validity of certificate
  • Annual and intermediate survey endorsements

Note: Where it is required to load the ship other than in accordance with the instructions on the certificate, then the necessary calculations to justify the proposed loading conditions shall be sent to the certifying Administration who may authorise  the proposed loading condition.


Attachment 1 To the international certificate of fitness for the carriage of liquefied gases in bulk

This is a continuation list of products to those specified in paragraph 4 of the certificate, and their conditions of carriage. This is an addition to the table of products contained within the main certificate.

certgascertattach1crop


Attachment 2 To the international certificate of fitness for the carriage of liquefied gases in bulk

This  attachment contains a tank plan.

:certsgascertattach2crop


Addendum to the International Certificate of fitness for the carriage of  liquefied gases in bulk

What is an addendum to the certificate?

This is a document is issued where it is proposed to carry products that may be considered to come within the scope of this Code that are not designated in chapter 19 of the code.

When this occurs, the Administration and the port Administrations involved in such carriage shall establish a Tripartite Agreement based on a provisional assessment and lay down preliminary  conditions of carriage based on the principles of the Code.

What is contained on the addendum?

A table of ship information

  • Name of ship
  • Distinctive
  • Number or letters
  • IMO number
  • Port of registry
  • Cargo capacity (m3)
  • Ship type

A statement that the ship meets the requirements for the carriage in bulk products listed in a table, provided that all relevant operational provisions of the Code are observed.

The table contains:

  • Product
  • Conditions of carriage (tank numbers, etc.)
  • Minimum temperature
  • MARVS

A statement of  the countries between which carriage is permitted.

The name of the document on which the addendum is based.

Dates

  • Validity of the Tripartite Agreement for the product
  • Expiry date of the addendum
  • Place and date of issue:

Ship types

The ship type stated on the certificate is one of the standards stated in the IGS code, each standard has a key word signifying the scale of measures required.

  • Type 1G ship is a gas carrier intended to transport the products that require maximum preventive measures to preclude their escape.
  • Type 2G ship is a gas carrier intended to transport the products require significant preventive measures to preclude their escape.
  • Type 2PG ship is a gas carrier of 150 m in length or less intended to
    transport the products that require significant preventive measures to preclude their escape, and where the products are carried in type C independent tanks designed for a MARVS of at least 0.7 MPa gauge and a cargo containment system design
    temperature of -55°C or above.
  • Type 3G ship is a gas carrier intended to carry the products indicated in  that require moderate preventive measures to preclude their escape.

 


Additional documentation

In addition to the certificates and its associated attachments the following documents will be required to be held on board a gas carrier.

 

 

Cargo system operation manuals

The ship shall be provided with approved copies of suitably detailed cargo system operation manuals  such that trained personnel can safely operate the ship with due regard to the hazards and properties of the cargoes that are permitted to be carried.

Cargo information data sheet(s)

Information shall be on board and available to all concerned in the form of a cargo information data sheet(s) giving the necessary data for the safe carriage of cargo.

Loading and Stability Information booklet

A booklet containing details of typical service conditions, loading, unloading and ballasting operations, provisions for evaluating other conditions of loading and a summary of the ship’s survival capabilities. The booklet shall also contain sufficient information to enable the master to load and operate the ship in a safe and seaworthy manner.

Important Note

Before any gas cargo is loaded The master shall ascertain that the quantity and characteristics of each product to be loaded are within the limits indicated in the International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk and in the Loading and Stability Information booklet, and that products are listed in the International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk.


This post was a bit of an extended one, thanks to the complexity of the certification.  Hopefully the next certificate to explore will be a bit more compact!

 

 

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One thought on “The International Certificate for the carriage of liquefied gases in bulk- A quick guide

  1. […] Certificate of Fitness for the Carriage of Liquefied Gases in Bulk –GC Code, section 1.6 International Certificate of Fitness for the Carriage of Liquefied Gases in Bulk– IGC Code, section 1.5; […]

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