According to the IMO guidelines, this sampling point should comply with all the following requirements:
*be easily and safely accessible;
*take into account the different fuel oil grades used for the fuel oil combustion machinery item;
*be downstream of the in-use fuel oil service tank;
*be as close to the fuel oil combustion machinery as safely feasible taking into account the type of fuel oil, flow-rate, temperature, and pressure behind the selected sampling point;
*be located in a position shielded from any heated surfaces or electrical equipment and the shielding device or construction should be sturdy enough to endure leaks, splashes or spray under design pressure of the fuel oil supply line so as to preclude impingement of fuel oil onto such surface or equipment; and
*be fitted with suitable drainage to the drain tank or other safe location.