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Inspection Procedures for Loading Tankers and Barges

 
  
 
Inspection Procedures for Loading Tankers and Barges.
Preloading Inspection. Ensure that the subsequent procedures are followed:
  Assure product quality in shore tanks and all lines used in loading.
  QAR will witness appropriate verification test of product to be loaded.
  Prior to loading, all lines will be dropped and water removed form cargo tanks.
  Check the cargo layout and loading plans. The QAR and the master of the vessel (or representative)
must concur on the cargo layout and loading plan.
  Check ship's log on nature of previous cargoes and leaks.
  Check loading lines to ensure they are properly isolated and do not contain product detrimental to the
cargo.
  Witness opening and closing of shore tank gages. The QAR will independently compute the quantity of
product loaded on vessels using shore tank gages.
  Close and seal the sea suction and overboard discharge valves prior to loading.
  Ensure vessel is grounded to dock.
  All lines will be full/empty before and after loading/discharge operations.
  Preparation of cargo tanks has been performed in accordance with Table II, DLAM 4155.1.
  The QAR will ensure that necessary safety precautions have been taken and that each cargo tank has
been properly gas-freed, tested, and certified by qualified personnel.
  The QAR will personally enter and inspect each tank to verify suitability to load.
  When tanks have been partially filled at a previous lifting point and are to be topped-off, the product
should be sampled and tested as deemed necessary by the QAR prior to topping off.
  Cargo tanks which have been loaded at a previous port and which are adjacent to the tanks to be loaded
should be sampled. The samples should then be held for testing in the event of loading difficulty that
indicates possible cargo commingling.
  All product aboard the vessel, including bunker tanks, shall be gaged before and after loading, unless
otherwise directed.
  When considered necessary, the QAR will require a rust test IAW paragraph 4.4.3, DLAM 4155.1.
  In the case of split cargoes, the QAR will ensure that:
- The vessel is structurally suitable for handling two or more grades of product simultaneously without
contamination.
- Bulkheads are secured.
- If valves are used, such valves will be lashed and sealed in proper position to ensure against
misuse.
  Vessel movements will not be expedited at the expense of quality or quantity determinations.
  Any conditions contributing to delays in port which increase loading or discharge time will be recorded on
the DD Form 250-1 (Figure 4-1).
During-Loading Inspection.
Initial loading will be at a rate not in excess of three feet per second through loading lines into cargo
tanks until the discharge outlet has been covered by three feet of product. Then, normal loading may be
resumed.
At the start of loading, displace a sufficient amount of product through pipeline system into one cargo
tank in the vessel. Then, switch to other tanks and continue loading. The first tank will be sampled and
tested to assure the quality of product is satisfactory.
If at any time there is an indication of contamination, the operation will be stopped until the cause and
extent has been determined.
Check and analyze line and dock header samples to verify quality of product moving to the vessel.
Samples will be taken under line flow conditions.
Sampling and testing of vessel cargo during and after loading will be done IAW Table VI, DLAM 4155.1.
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QM 5184


   


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