Annex 5
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Annex 5

(Regulation V/3.2)
IGNITABILITY TEST FOR COMBUSTIBLE INSULATIONS
1 Test Specimens
1.1 One specimen is to be prepared.
1.2 The specimen is to be a minimum of 150mm x 150mm and of the thickness which is to be used on the vessels, together with any facing with which it is normally covered.
2 Conditioning of Test Specimens (absorbent materials)
2.1 The conditioning atmosphere should have a temperature of 20 ± 2EC and relative humidity of 65 2%.
2.2 The specimen should be laid flat, in the conditioning atmosphere for a period 24 hours, or for a sufficiently longer period in order to ensure that the mass of the specimen shows no progressive change greater than 0.25% when it is determined at intervals of 2 hours.
3 Atmosphere for Testing
3.1 The test is to be conducted in an atmosphere the same as for conditioning the specimen, or within 2 minutes of removal from the conditioning atmosphere.
3.2 Appropriate measures should be taken to prevent draughts in the vicinity of the testing equipment when testing is in progress.
4 Testing Procedure
4.1 Source of Ignition
The source should be obtained by using a burner consisting of a copper tube having a length of 150mm and inside and outside diameters of 5mm and 6mm respectively connected by plastic or rubber tubing to a gas tap supplying natural gas. The copper tube is to have no opening for the supply of air.
4.2 Height of Flame
Before the test takes place the burner flame is to be adjusted to a height of 32mm.
4.3 Test Procedure
4.3.1 Place the specimen horizontally on a metal tripod stand with the upper surface of the specimen facing downwards (i.e. with normally exposed face on underside) such that the height of this surface of the specimen is approximately 8mm below the top of the burner flame. Apply the burner flame at right angles to the plane of the specimen in the centre of specimen. After one minute the burner flame is to be removed clear of the specimen and the time in seconds to extinction of any flaming is to be recorded.
4.3.2 The test in paragraph 4.3.1 is to be repeated after any flaming or smouldering has ceased and the temperature of the specimen has returned to normal except that the centre of the burner flame is to be positioned at the midpoint of any edge of the specimen. Again the time in seconds to extinction of any flaming after the removal of the burner is to be recorded.
5 Pass Criteria
An insulation is deemed to be “nor readily ignitable” when any flaming of the test specimen ceases within 20 seconds of the removal of the burner.
Parent topic: SCV Code - Code of Safety for Small Commercial Vessels Operating in the Caribbean
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