4.4 On a degree of preparation petroleum subdivide into groups 1-3 (table 3).

  Table 3 - Groups of petroleum

The name of a parameter

Norm for petroleum of group

Test method

1

2

3

1 Mass fraction of water, %, no more

0,5

0,5

1,0

In accordance with GOST 2477 and 9.5 this standards

2 Concentration of chloride salts, mg / dm3, no more

100

300

900

In accordance with GOST 21534 and 9.6 this standards

3 Mass fraction of mechanical impurity, %, no more

0,05

In accordance with GOST 6370

4 Pressure sated паров, kPа (mm rt. An item), no more

66,7 ( 500 )

66,7 ( 500 )

66,7 ( 500 )

In accordance with GOST 1756 and 9.8 this standards

5 Maintenance Chlorine organic connections, one million-1 (ррт)

It is not normalized. Definition is necessary

Appendix A [6]

      П р and m е ч and н and е - If on one of parameters petroleum concerns to group with smaller number, and on another - to group with big number petroleum recognize to the appropriate group with big number.

The name of a parameter

Norm for petroleum of group

Test method

1

2

3

1 Mass fractions of hydrogen sulphide, one million-1 (ррт), no more

20

50

100

In accordance with GOST Р 50802 and 9.9 this standards

2 Mass fraction methyl and etil merkin the sum, one million-1 (ррт), no more