BS EN 14314:2015 pdf download – Thermal insulation products for building equipment and industrial installations — Factory made phenolic foam (PF) products — Specification 4 Requirements 4.1 General Product properties shall be assessed in accordance with Clause 5. To comply with this standard,products shall meet the requirements of 4.2 and the requirements of 4.3 as appropriate. NOTE Information on additional properties is given in Annex D. One test result for a product property is the average of the measured values on the number of the test specimens given in Table 6. 4.2 For all applications 4.2.1 Thermal conductivity For flat specimens, the thermal conductivity shall be based upon measurements carried out in accordance with EN 12667 or EN 12939 for thick products. For cylindrical specimens, EN ISO 8497 shall be used as specified in 5.3.2. In both cases, the thermal conductivity values shall be determined by the manufacturer and verified in accordance with EN ISO 13787 and Annex B of this product standard. They shall be declared by the manufacturer according to the measuring standards mentioned above covering the product service temperature range. The following conditions apply: — the measured values shall be expressed with three significant figures; — the declared thermal conductivity curve shall be given as a limit curve, defined in EN ISO 13787; — the value of the declared thermal conductivity, λ D , shall be rounded upwards to the nearest 0,001 W/(m·K); — the lowest reference mean test temperature required is – 170 °C. The declared equation/limit curve is the “declared reference” with three significant figures, that is to 0,000 1 W/(m·K) for λ values below 0,1 W/(m·K) and in 0,001 W/(m·K) for λ values above 0,1 W/(m·K). This shall be used as a reference for the verification of the declaration. When thermal conductivity is declared as a table derived from the formula, rounding upwards to the next 0,001 W/(m·K) has to be done for the full range of the thermal conductivity. NOTE Determinations of the declared thermal conductivity of pipe sections, following EN ISO 8497, having joints in the metering area, include the effects of these joints as defined in EN ISO 23993. 4.2.2 Dimensions and tolerances 4.2.2.1 Linear dimensions The length, l, width, b, and thickness, d, of boards shall be determined in accordance with EN 822 and EN 823. The length, l, thickness, d, and inside diameter, D i , of pipe sections,...
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