BS ISO 16132:2016 pdf free
BS ISO 16132:2016 pdf free.Ductile iron pipes and fittings一Seal coats for cement mortar linings
When tested in accordance with Annex B, the pH of the test water shall not exceed 9,5 for each of the test samples.
By agreement between the manufacturer of the product and the customer, other performance tests with other exposure periods, test waters and/or limits of pH value may be undertaken to suit particular national or customer requirements.
Note that if the seal coat has been documented by the manufacturer to a National Standard and successfully used for a minimum of 5 years, the performance of the type test in accordance with Annex B is only required for significant changes in the coating material, type or formulation which could adversely affect the performance of the seal coat.
When tested in accordance with Annex C, visual inspection shall display no peeling of the seal coat or cracking with a width in excess of 0,8 mm. It is permissible to have some precipitation of white alkaline deposit.
At the conclusion of the visual inspection, the pipe samples shall immediately be tested for sealing efficiency in accordance with Annex A. When tested in accordance with Annex A, the pH of the test water shall not exceed 9,5 in either of the pipe samples.
Note that if the seal coat has been tested and successfully used for a minimum of 10 years, the performance of the type test in accordance with Annex C is only required for significant changes in the coating material, type, or formulation which could adversely affect the performance of the seal coat.
When examined visually, the seal coat shall be free from any coating irregularities likely to be detrimental to the performance of the seal coat (as required by the performance tests in BS ISO 16132). The manufacturer shall define those coating irregularities (e.g. hairline cracks or pinholes) which are considered not to be detrimental to the performance of the seal coat (as required by the performance tests in BS ISO 16132), taking into account the nature of the seal coat material.BS ISO 16132 pdf free.
