BS EN 14320-1-2013 pdf download.Thermal insulating products for building equipment and industrial installations In-situ formed sprayed rigid polyurethane (PUR) and polyisocyanurate foam (PIR) products
Part 1: Specification for the rigid foam spray system before installation.
4.2.2 Thermal conductivity
The thermal conductivity shall be based upon measurements carried out in accordance with EN 12667 or EN 12939 for thick products.
The thermal conductivity values shall be determined by the manufacturer and verified in accordance with EN ISO 13787 and Annex C of this product standard. They shall be declared by the manufacturer according to 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 and measured using the details given in 5.3.2:
the value of the declared thermal conductivity. A0, shall be rounded upwards to the nearest
0,001 W/(mK);
the lowest reference 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/(mK) for values below 0,1 W/(mK) and in 0,001 W/(m-K) for ? values above 0,1 W/(mK). This shall be used as a reference for the verification of the declaration.
When thermal conductivity is declared as a table derived from the curve, it shall be rounded upwards to the next 0,001 W/(m.K) for the full range of the thermal conductivities.
NOTE The declaration of declared installed th.ckness for an installed sprayed rigid Pu foam Is descnbed In
EN 14320-2.
4.2.3 Reaction to fire of the products
4.2.3.1 General
The reaction to fire classification of the products not taking into account the end-use application shall be determined in accordance with EN 13501-1 and using data obtained from tests carried out according to procedures in EN ISO 11925-2 and EN 13823 and utilising test specimens conforming to 4.2.3.2 and mounting and fixing procedures in accordance with 4.2.3.3.
The PUR or PIR product may be qualified as one for which the Reaction to Fire classification is not susceptible to change during production of the system, provided that it can be demonstrated (for example with a production control system) that the characteristics responsible for change are within a range where no change of the declared classification for the product occurs.
4.2.3.3 Mounting and fixing procedures
4.2.3.3.1 EN ISO 11925-2
Test specimens prepared in accordance with 4.2.3.2.1 shall be mounted in the EN ISO 11925-2 test apparatus as specified in G.3.1.
4.2.3.3.2 EN 13823
Test specimens prepared in accordance with 4.2.3.2.2 shall be mounted so that the inner face of the test specimen which is typical of the end use application is in contact with the flame source. In all other respects, the products shall be mounted as specified in G.3.2.
4.2.3.4 Procedures
4.2.3.4.1 EN ISO 11925-2
Apply the test flame to the natural skin of the test specimen as specified in G.3.1.1.
4.2.3.4.2 EN 13823
Expose the internal surface of the test specimen to the test flame (see G.3.2.1 and G.3.2.2).
4.2.4 Reaction profile and free-rise density
The appropriate values for the foam system shall be stated, having been determined in accordance with the procedures given in Annex D.
4.2.5 Durability characteristics
4.2.5.1 General
The appropriate durability characteristics have been considered and are covered in 4.2.5.2 to 4.2.5.1.
4.2.5.2 Durability of reaction to fire against ageingldegradation
The reaction to fire performance of PUR and PIR products does not decrease with time, in the applications covered by this standard.
4.2.5.3 Durability of reaction to fire against high temperature
The reaction to fire performance of PUR/PIR products does not decrease with time for tempefatures within the claimed service temperature range.
For PURIPIR products the effects of traffic shall be assessed by means of determination of the compressive stress or compressive strength in accordance with EN 826.
4.3.5 Dangerous substances
National regulations on dangerous substances may require verification and declaration on release, and sometimes content, when construction products covered by this standard are placed on those markets. In the absence of European harmonised test methods, verification and declaration on release/content should be done taking into account national provisions in the place of use.
NOTE An infornhve database covering European and national provisions on dangerous substances is available at the Construction web site on EUROPA accessed through: httpi/eceuropaeu/e,flerpnsefconstrvclion/cpd-ds/
4.3.6 Maximum service temperature
The maximum service temperature, TU, in C, shall be taken as either the value determined using the method given in EN 14706 or the value declared by the manufacturer, whichever is the lower.
4.3.7 Minimum service temperature
The minimum service temperature, TL, in C, shall be taken as either the value determined using the method given in 4.3.3 of EN 14308:2009 or the value declared by the manufacturer, whichever is the higher.
4.3.8 Rate of release of corrosive substances
The amount of water soluble chloride shall be determined in accordance with EN 13468 (leaching time of
0,5 h at (100 ± 1) CC). with the soluble chloride content, , given as the value in ppm of chloride ion per kg.
4.3.9 Substrate adhesion strength perpendicular to faces
The substrate adhesion strength perpendicular to faces, shall be determined in accordance with the procedure given in Annex E. No test result shall be lower than the value given in Table 3 for the labelled level.BS EN 14320-1-2013 pdf download.