BS EN 58:2004 pdf free.Bitumen and bituminous binders —Sampling bituminous binders.
BS EN 58 The safety precautions given in this clause represent good practice and shall be applied in all cases where they arenot in conflict with local or other Regulations which shall be followed.
NOTE1 The list of safety precautions given in this clause is not necessarily exhaustive and they should be considered inconjunction with relevant national safety Regulations andlor recognized safety code(s) for the petroleum industry.
a)All Regulations concerning entry into hazardous areas shall be observed rigorously;
b) equipment shall be maintained adequately;
NOTE 2 Regular inspections of equipment should be carried out by a competent person.
c)all equipment and access facilities shall be checked to ensure that they are adequate for safe working befor
commencement of sampling;
d) metali sampling devices used in flammable atmospheres shall be constructed only from non-ferrous metal(s);e) cords used as components of sampling devices shall be constructed only from vegetable fibre(s), e.g. manillaor sisal; for emulsions, the cord used shall not absorb water from the emulsion;
NOTE 3 Attention is drawn to the situation that for cords made from man-made fibres it is possible for an operator to buildup a dangerous level of electrostatic charge on his person, if he is not earthed and wearing insulating gloves, and that certairman-made fibres will melt or dissolve in hot bitumen.
f) precautions shall be taken to prevent the breathing of petroleum vapours during sampling operations;
g) for samples taken from the main stream, the sampling device shall be selected such that sampling can be
performed without pressure.
Correct sampling techniques are a prerequisite if meaningful test results are to be obtained. There should be afacility for heating the sampling device.
The person taking the sample shall be experienced in the methods to be employed.
lf the sample is to be subdivided, a suitably large representative sample shall be taken and divided into therequired number of divided samples.A sampling report shall be prepared and signed by the person taking the sample.BS EN 58 pdf download.