AS ISO 3452.5:2020 pdf download.Non-destructive testing – Penetrant testing Part 5: Penetrant testing at temperatures higher than 50 °C.
5 Safety precautions
Equipment and testing products shall be handled, stored and used in a safe manner and always in accordance with the manufacturer’s instructions.
The viewing conditions required in this part of ISO 3452 are the same as those for the 10 °C up to 50 °C temperature range and the same safety precautions should be observed.
In addition to the safety considerations associated with 10 °C up to 50 °C temperature range, due consideration shall be given to the risks associated with use at higher temperatures. Skin-burning, flammability and volatility are examples of potential hazards which vary with temperature. The work area shall always be adequately ventilated and personnel exposure levels should be carefully assessed.
All relevant European, national and local regulations pertaining to health and safety, environmental requirements etc. shall be observed.
6 Personnel qualification
Personnel carrying out testing in accordance with this part of ISO 3452 shall be suitably certified (e.g. Iso 9712, EN 473). They shall also be knowledgeable of the special considerations for testing at higher temperatures (e.g. time limitations for inspection, special considerations of materials).
7 Classification of testing products
Testing products shall be classified by type, method and form as given in Iso 3452-2:2006, Table 1, but high temperature sensitivity shall be as described herein.
Products also classified and qualified for 10 °C up to 50 °C temperature range may be designated with a suffix to show suitability for use at temperatures above 50 °C, e.g. Type I, Method C, Form a, Level 2, Temperature M, (ICa-2/M).
8 General characteristics of the products
The reference products as stated in 14.2 are penetrant materials used in the range 10 °C to 50 °C for comparison purposes (see 14.3) and they shall conform with the requirements of ISO 3452-2.
Thermal stability shall be stated by the manufacturer and the test shall be carried out at least at 20 °C above the maximum rated working temperature for the candidate testing material.
Testing products shall be selected according to application with appropriate reference to the manufacturer’s recommendations for process parameters.
9 Reference blocks
Temperature designation shall be performed with defined reference blocks (see e.g. Annex A of this part of ISO 3452 or ISO 3452-3, Type 1).
Before use, reference blocks shall be cleaned using suitable means and tested for absence of indications with a suitable non-aqueous wet developer. Absence of indications confirms that the panel is suitable for use. The developer shall be removed and the panel shall not be touched by bare hands throughout the process (to avoid contamination). Clean, white cotton, or other materials meant for temperature- rating gloves, may be used to assist with handling.
Annex A comparators shall be used only once and in matched pairs. One of them shall be tested at the temperature given in Clause 12 and the other one shall be tested at ambient temperature using penetrant materials suitable for use at 10 °C to 50 °C, (see Clause 8).
NOTE High temperature process of Type 1 panels could lead to some residues being difficult to remove from the cracks. Specific care needs to be taken to maintain the usability of the panels.AS ISO 3452.5 pdf download.