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Performance requirements for the self-closing classification CO to C5 are defined in EN 14600. They are dependent on the type of intended use of the closure for conveyor systems. The self-closing classification shall be handled independently from the E, El and EW classification.

Closure for conveyor systems fitted with a closing device, fulfilling the self-closing criterion shall be classified as E-C...,

The sustained operational capability of any clearing device and/or any separating device for a conveyor system is identified using a 'Т’ (see 7.5.7.4.4).

Examples of possible classifications: Eh 45, El₂ 30-C1, EW 20-C0, or Eh 60-C2-T.

7.5.8 Classification of penetration seals

Penetration seals shall be tested in accordance with EN 1366-3. E) Extended application shall be carried out as described in the extended application standard EN 15882-3 and in prEN 15725. El

The design of the test specimen and the number of tests to be carried out shall be derived from a comparison between the envisaged field of application of the classification and the field of application of test results as E) defined in the test standard and in the extended application standard EN 15882-3 El.

The test method provides information on the following:

• test specimen;

• field of direct application of test results;

• guidance on test specimen design and definition of standard service configurations.

Aspects influencing the number of tests to be carried out shall include for example:

1. the type and end-use of services envisaged to pass the penetration, including a blank penetration seal and multiple penetrations;

2. the range of supporting constructions to be covered;

3. the direction of the supporting constructions: horizontal and/or vertical separating elements.

7.5.8.3 Performance criteria

The assessment of integrity shall be made on the basis of the following three aspects:

1. cracks or opening in excess of given dimensions;

2. ignition of a cotton pad;

3. sustained flaming on the unexposed side.

Classification of integrity shall be according to whether or not the element is also classified for thermal insulation.

Where an element is classified both for integrity E and thermal insulation I, the integrity value shall be that determined by whichever of the three criteria fails first. Where an element is classified E but without an I classification, the integrity value is defined as the time to failure of only the cracks/openings or sustained flaming criteria, whichever fails first.

The performance level used to define the thermal insulation criterion shall be the maximum temperature rise at any point, limited to 180 °С above the initial mean temperature.

No mean temperature shall be considered.

The following classes are defined:

When penetration seals for pipes are to be classified, four pipe end configurations are defined in the test standard, according to the table 1 below:

Table 1 - Pipe end configuration

The class obtained for the penetration seal is specified by the letter indicating the test condition as given in Table 1, e.g. El 30-U/U.

Linear joint seals shall be tested in accordance with EN 1366-4. E) Extended application shall be carried out as described in the extended application standard prEN 15882-4 and in prEN 15725. О

7.5.Э.2 Tests to be carried out

The design of the test specimen and the number of tests to be carried out shall be derived from a comparison between the envisaged field of application of the classification and the field of application of test results as E) defined in the test standard and in the extended application standard prEN 15882-4 0-

The test method provides information on the following:

• test specimen;

• field of direct application of test results;

• guidance on test specimen design and definition of standard service configurations.

Aspects influencing the number of tests to be carried out shall include for example:

1. the range of movements envisaged for the adjacent components;

2. the range of support constructions to be covered;

3. the orientations envisaged;

4. the joint widths envisaged;

5. the type of splices to be covered.

If multiple seals are included in a single test, the performance of each linear joint shall be classified separately.

The assessment of integrity shall be made on the basis of the following three aspects:

1. cracks or openings in excess of given dimensions;

2. ignition of a cotton pad;

3. sustained flaming on the unexposed side.

Classification of integrity shall be according to whether or not the element is also classified for thermal insulation.

Where an element is classified both for integrity E and thermal insulation I, the integrity value shall be that determined by whichever of the three criteria fails first. Where an element is classified E but without an I classification, the integrity value is defined as the time to failure of only the cracks/openings or sustained flaming criteria, whichever fails first.

The performance level used to define the thermal insulation criterion shall be the maximum temperature rise at any point, limited to 180 °С above the initial mean temperature. No mean temperature shall be considered.

The following classes are defined:

When linear joint seals are to be classified, different test conditions are defined in the test standard, according to Table 2 below.

Table 2 - Classification of linear joint seals

The class obtained for the linear joint seals is specified by the letters indicating the test conditions as given in Table 2 above; e.g. El 30 - H - M 100 - В - W 30 to 90.

7.5.10 Classification of service ducts and shafts

Service ducts and shafts shall be tested in accordance with EN 1366-5. E) Extended application shall be carried out as described in the relevant extended application standard and in prEN 15725. El

The design of the test specimen and the number of tests to be carried out shall be derived from a comparison between the envisaged field of application of the classification and the field of application of test results E> defined in the test standard and in the relevant extended application standard El-

The test method provides information on the following:

• test specimen;

• field of direct application of test results;

• guidance on test specimen design;

• the ability of horizontal service ducts to support the weight of services;

• the ability of the service duct to prevent ignition of combustible services.

Aspects influencing the number of tests to be carried out shall include for example:

1. whether fire is outside or inside the service duct;

2. if the service duct is vertical or horizontal.

The assessment of integrity shall be made on the basis of the following aspects:

1. cracks or opening in excess of given dimensions;

2. ignition of a cotton pad;

3. sustained flaming on the unexposed side.

The performance of the duct outside the furnace shall be judged on the basis of the mean temperature rise on the unexposed face being limited to 140 °С above the initial mean temperature; with the maximum temperature rise at any point on the service duct outside the furnace limited to 180 °С above the initial mean temperature.

In addition, for a judgement to be made on the potential ignition of combustible services, surface thermocouples located inside the duct exposed to an outside fire shall not exceed 180 °С above the initial mean temperature.

The performance criteria can be summarised as given in Table 3 below:

Table 3 - Performance criteria for service ducts

The following classes are defined:

The classification shall be completed by “(i -»o)”, “(о -> і)” or (i o) to indicate whether the element has been tested and fulfils the requirements from the inside or outside or both.

In addition the symbols “v_e” and/or “h₀" indicate the suitability for vertical and/or horizontal use.

7.5.11 Classification of chimneys

This covers chimney products designed to be built into a permanent structure and chimneys and chimney products where one or more external surfaces are within a building.

Chimneys shall be tested in accordance with EN 13216-1.

The thermal exposure shall be a constant temperature attack of 1 000 °С, being maintained for 30 min, after having reached the 1 000 °С level after 10 min.

The design of the test specimen and the number of tests to be carried out depend upon the envisaged field of application of the classification.

Flues and other chimney products designed to be built into a surround (e.g. into a brick chimney) need only satisfy a leakage requirement at the end of the test.

Products and elements, where the external surface or surfaces of the chimney are within or adjacent to a building, shall satisfy an thermal insulation requirement, defined as being a maximum temperature of adjacent materials, not exceeding 100 °С when related to an ambient temperature of 20 °С.

Products and elements satisfying the above criteria on a pass/fail basis use the letter G to denote fire resistance, followed by the designation of the necessary distance, expressed in mm, e.g. G 50.

7.6 Classification of wall and ceiling coverings for fire protection ability

The term ‘covering’ refers to the outermost part of vertical building elements (e.g. walls, partitions and external walls) and to the lowermost part of horizontal or sloping elements (e.g. floors, roofs and ceilings).

A covering designated Kt or K₂ is a covering which for the classification period (10 min, 30 min or 60 min) provides the prescribed protection for the materials behind the covering.

NOTE Reaction to fire requirements can also apply for the products constituting the covering.

Coverings designated K,

One of the following substrates are used in the test:

• a chipboard (with a density of (680 ± 50) kg/m³ and a thickness of (19 ± 2) mm or

• a low density material (with a density of less than 300 kg/m³ and a thickness of at least 50 mm) or

• any other specific substrate.

Test results obtained with the chipboard substrate apply to the covering used on substrates with a density of at least 300 kg/m³.

The classification criteria include limitation on temperature rise, burnt material, charred material, melted material and shrunk material.

Coverings designated K?

One of the following substrates are used in the test:

• a chipboard (with a density of (680 ± 50) kg/m³ and a thickness of (19 ± 2) mm or

• any other specific substrate.

Test results obtained with the chipboard substrate apply to the covering used on all substrates (independent of the type and density of the substrate).

The classification criteria include limitation on temperature rise, burnt material and charred material.

The test method for fire protection ability of coverings shall be as given in EN 14135.

The design of the test specimen and the number of tests to be carried out shall be derived from the envisaged field of application of the classification and the field of application of the test results as defined in the test standard.

A covering designated K, is considered to give the prescribed protection for materials behind the covering if during a test in accordance with EN 14135 within the classification period (10 min) there is no collapse of the covering or parts of it and also if the requirements stated in a), b) and c) are fulfilled.

1. For a covering without a cavity or cavities behind it

• during the test the mean temperature measured on the lower side of the substrate shall not exceed the initial temperature by more than 250 °С and the maximum temperature measured at any point of this side shall not exceed the initial temperature by more than 270 °С, and

• after the test there shall be no burnt material, charred material, melted material or shrunk material at any point of the substrate.

2. For a covering with a cavity or cavities behind it

• during the test the mean temperature measured on the lower side of the substrate and the mean temperature measured on the unexposed side of the covering shall not exceed the initial temperature by more than 250 °С and the maximum temperature measured at any point of these sides shall not exceed the initial temperature by more than 270 °С, and

• after the test there shall be no burnt material, charred material, melted material or shrunk material at any point of the substrate and at any point of the unexposed side of the covering.

A covering designated K₂ is considered to give the prescribed protection for materials behind the covering if during a test in accordance with EN 14135 within the classification period (10 min, 30 min or 60 min) there is no collapse of the covering or parts of it and also if the following requirements are fulfilled.

1. For a covering without a cavity or cavities behind it

• during the test the mean temperature measured on the lower side of the substrate shall not exceed the initial temperature by more than 250 °С and the maximum temperature measured at any point of this side shall not exceed the initial temperature by more than 270 °С, and

• after the test there shall be no burnt material or charred material at any point of the substrate.

2. For a covering with a cavity or cavities behind it

• during the test the mean temperature measured on the lower side of the substrate and the mean temperature measured on the unexposed side of the covering shall not exceed the initial temperature by more than 250 °С and the maximum temperature measured at any point of these sides shall not exceed the initial temperature by more than 270 °С, and

• after the test there shall be no burnt material or charred material at any point of the substrate and at any point of the unexposed side of the covering.

The following classes are defined (e.g. covering class K₂ 60):

10. 30 and 60 are the periods (in minutes) during which the criteria given in 7.6.4.1 or 7.6.4.2 are satisfied.

Annex A

(normative)

Classification report