MCU14/0056 Response to SARA - Consulting Report

EN 858-1:2002 (E)

8.3.3.1.3 Test fluids
— Water:

The water shall be drinking water or river water purified by mechanical means. The temperature shall be between
4°C and 20 °C and the pH value shall be 7 + 1.

— Light liquid:

The light liquid shall be fuel oil in accordance with ISO 8217, designation ISO-F-DMA, having a density of
(0,85 + 0,015) gicm® at temperature of 12 °C.

8.3.3.1.4 Test procedure

Fill the separator with water. Measure the maximum static water level and corresponding volume V,. At the
predetermined maximum allowable flow rate Qy measure the new water level.

Calculate the total duration of the test T as the sum of the running-in period 7; and the sampling period Tp, so that
T= Te+Tp. The running-in period shall be equivalent to the length of time needed to exchange the volume of water
Y, four times, with a minimum period of 15 min, and is determined by the following formula:

_ 4AXVK (1)

PEG, x60

where

Te is the running-in period, in min, with a minimum period of 15 min;

Vv. is the water volume of the separator, in |;

Q,, is the maximum allowable flow rate of water through the separator, in I/s.
The sampling period Tp shall be 5 min.
Maintain the maximum allowable flow rate of water Q, with a tolerance of + 2% and add the light liquid at a
constant flow rate of 5 ml/I with a tolerance of 5 % for the total duration of the test 7, ensuring no light fiquid dwelis
in the collecting chamber. The effluent shall be discharged through the sampling pipe during the whole of the
test T.

From the beginning of the sampling period 7p, and at 1 min intervals, take one sample, at least 500 mi, from
every outlet of the separator via the sampling pipe. This will give a total of five samples per outlet.

Analyse the samples by infrared spectroscopy or by gas chromatography in accordance with annex A using the
light liquid in accordance with 8.3.3.1.2 as the reference liquid.

Calculate the content of residual oil as the arithmetical mean value of the samples. No individual sample shall have
a higher value than 10 mg/l for class | or 120 mg/l for class II.

.

Determine the nominal size of the separator in accordance with clause 5, and the class in accordance with table 1.
Add more light liquid when there is no flow until the storage capacity for light liquid has been determined, having
regard for whether or not a closure device is to be fitted. The result shall be in accordance with 6.5.2. Measure the

light liquid tevel at storage capacity and determine the maximum operational liquid level. For separators greater
than NS 6 the storage capacity and the maximum operational liquid level may be determined by calculation.

8.3.3.2 Separators built in-situ

Verify the nominal size of separators built in-situ by measurement with an accuracy of 1mm and calculation in
accordance with 6.5.6.2.

30 This is a licensed reproduction produced by SA! Giobal Ltd, an authorized distributor of British Standards