BS EN 58:2012 pdf free.Bitumen and bituminousbinders -Sampling bituminous binders.
BS EN 58 This European Standard specifies methods of sampling bituminous binders, to determine the average qualityof the material under examination and/or to determine deviations from average quality.
Terms and definitions:For the purposes of this document, the following terms and definitions apply.2.1
composite sample
sample made up by the mixing of several spot samples
Note 1 to entry: A composite sample is regarded as a representative sample if the spot samples are taken accordingto a sampling plan which makes it probable that the composition of the composite sample approaches that of the materialas closely as possible.
divided sample:sample formed by dividing a spot, composite or representative sample into several similar parts by appropriatemeans.
flowing material:material which flows in a transport pipeline or out of the drainline of a storage container.
laboratory sample:sample intended for laboratory tests.
layer sample:upper, middle or lower layer spot sample taken at a specific depth in a stationary material, usually in order todetect segregation in large storage containers.
The safety precautions given in this clause represent good practice and shall be applied in all cases wherethey are not in conflict with local or other regulations which shall be followed.
The list of safety precautions given in this clause is not necessarily exhaustive and they should be consideredin conjunction with relevant national safety regulations andor recognised safety code(s) for the petroleumindustry.
a) All regulations concerning entry into hazardous areas shall be observed rigorously.b) Equipment shall be maintained adequately. 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 before commencement of sampling.
d)Metallic 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. manilla or sisal; for emulsions, the cord used shall not absorb water from the emulsion.
NOTE Attention is drawn to the situation that, for cords made from man-made fibres, it is possible for an operator tobuild up a dangerous level of electrostatic charge on his person, if he is not earthed and wearing insulating gloves, andthat certain man-made fibres will melt or dissolve in hot bitumen.
f) Precautions shall be taken to prevent the breathing of bitumen 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.BS EN 58 pdf download.