SPOT CHECK ON BOARD
The spot check is done on Bulk carrier vessels to determine Angle of Repose.
Method:
Place a rough sheet of paper (e.g.sand paper) on a horizontal table which is not subject to movement or vibration. Take about 3 litres of the bulk cargo in a conical flask and pour about two-thirds of it on the rough paper to form a cone. Now pour the balance carefully from a few millimetres above the cone top so as to form a symmetric cone. This can be done by revolving the mouth of the flask around the cone peak as the material is being poured.
The angle that the cone slope makes with the horizontal is measured by a protractor at four points around the cone 90° apart.
Ref: Cargo Work by Capt Errol Fernandes
