What are precaution while Sampling and Gauging of Cargo on tankers ?

When sampling and gauging, the following should be considered:
  • Appropriate PPE must be worn;
  • The characteristics of the chemical should be considered and the MSDS sheet.
  • Samples should be kept in either clear or amber glass bottles with secure lids;
  • Manufacturers’ guidance for maintenance of sampling equipment should be followed;
  • To avoid contamination, sampling equipment should be kept clean and dry;
  • Closed sampling equipment must be tested for electrical continuity and earthed prior to introduction into tanks;
  • Anti-static precautions must be taken and cargo relaxation periods observed when dealing with static accumulator products;
  • MSDS should be kept with stored samples; and
  • All sampling and gauging lines should be made of non-static generating material.
Requirements for taking samples vary. However, it is common for samples to be required as follows:
  • Manifold sample at commencement of loading (from each shoreline, if more than one);
  • Pump stack sample;
  • First foot sample from each tank during loading;
  • Final sample from each tank after loading;
  • Composite sample of all tanks after loading;
  • All tanks before discharge; and
  • Composite sample before discharge.
  • All samples drawn should be clearly labelled and, together with any samples drawn by the shore inspector, should be securely stored in the vessel’s cargo sample store.

In order to avoid the dangers of static electricity, all sampling anct gauging  lines should be made of non-static generating material.


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