MCU14/0056 Response to SARA - Consulting Report

EN 858-1:2002 (E)

Three test specimens of each material type shall be used for each of the four immersion tests described in 8.1.4.1.
In these tests a scratch shall be made into the coating, passing through to the steel or concrete surface, in one of
the test specimens.

The effect on the coating shal! be determined in accordance with ISO 2812-1.

The results shall meet the requirements in 6.2.7.1.5.

8.1.5 Chemical resistance of external coatings

Prepare test specimens in accordance with 8.1.3.2.6 and determine the dry film thickness and porosity.

Three test specimens of each material type shall be used for each test which is to determine the resistance to
water in accordance with ISO 2812-2 (for coatings on steel or concrete substrates), and neutral salt spray in
accordance with ISO 7253 (for coatings on steel substrates only). In these tests a scratch shail be made into the
coating, passing through to the steel or concrete surface, in one of the test specimens.

Each test shall have a duration of 1 000 h. After the immersion tests, the test specimens shall be rinsed with water,
dried in air at (20 + 3) °C for 24 h then checked for compliance with the requirements in 6.2.7.2.

8.2 Watertighness of system components

Watertightness of finished system components shall be tested by filling with water up to 40mm above the
maximum operational liquid level for at least 20 min. There shall be no leaks.

In addition, chambers which have assembly joints i.e. those which can be dismantled, and where dissimilar
materials are connected, shall be tested as follows:

The test apparatus shall be constructed in accordance with figure 1 using identical materials, coatings and joint
seals as those manufactured for the separator system. The assembled test apparatus shall be closed, filled with
water and subjected to a water pressure of 0,5 bar for a minimum period of 2 h. There shail be no leaks.

This test shall also be applied to joints between chambers and shafts and extensions shafts.

20 This is a Hicensed reproduction produced by SAI Global Ltd, an authorized distributor of British Standards