BS/EN 81-58-2018 pdf download.Safety rules for the construction and installation of lifts. Examination and tests
Part 58: Landing doors fire resistance test.
11.2 Furnace CO₂ concentration
There shall be provision for continuous monitoring of CO2 concentration in the furnace during the test. The instrument shall have a range of 0 % to 20 % CO2 concentration and the calibration shall be established prior to the test by using a sample of known concentration. The accuracy of measurement for C02, i.e. the instruments and the measurement system shall be within ± 0,2 % CO2.
11.3 Gas flow measuring system instrumentation
One or more thermocouples shall be provided close to the gas flow measuring system, within a distance of 100 mm, to measure the temperature of the exhaust gases drawn from the canopy.
Gas sample shall be drawn from the vicinity of the measuring system to monitor continuously the CO2 concentration. The instrument Is expected to have a range of 0 % to 2.5 % and the accuracy of measurement shall be within 0,05 % CO2. it shall be checked prior to the test by using a sample of known concentration of CO2 in the range of 1 % to 2,5 %.
Provision shall be made at the gas flow measuring system to monitor the pressure differential of the flow measuring device and the absolute pressure in relation to the ambient conditions. The range of the instrument shall be compatible with the flow rate generated by the suction fan.
NOTE Between the sampling probes and the cooling equipment the gases are transferred through a heated line to prevent condensation. It is advised to use a time shift the measurement data to accommodate the response time between the C02 data and temperature and pressure data (see E.1).
The accuracy of determination of leakage rate shall be within 10%.
11.4 Furnace pressure
Furnace pressure shall be measured continuously at a minimum of two locations over the height of the furnace to ensure that the pressure conforms to the specification in 6.2.
11.5 Unexposed face temperature
11.5.1 General
This clause specifies additional details for testing insulating capacity of lift landing doors designed for installation within openings incorporated in vertical lift shafts.
Where compliance with the insulation criteria is required to be evaluated, thermocouples of the type specified in EN 1363-1 shall be attached to the unexposed face as Indicated below for the purpose of obtaining the average and maximum surface temperatures. General principles for the attachment of thermocouples given in EN 1363-1 shall apply.
The dimensions given in 11.5.2 and 11.5.3 are taken from landing side.
Position five thermocouples per door leaf, one as close as possible to the centre of the door leaf (leaves) and one as close as possible to the centre of each quarter section. These shall not be located closer than 100 mm to any joint, stiffener or through component, nor closer than 100 mm to the edge of the leaf (leaves).
The number of thermocouples on the door leaves may be restricted to 12, evenly distributed over all door leaves.
In the event the door leaf (leaves) are of small size (i.e. less than 400 mm wide) such that the conventional five thermocouples cannot be fixed and/or the 100 mm minimum cannot be respected or the number of thermocouples is exceeding the maximum, then a limited number of thermocouples will be evenly distributed on the centre and diagonals of the clear entrance surface of the door.
When the total area of a single part of the door assembly Is equal or smaller than 0,2 m2, it shall be disregarded for the purpose of ascertaining the mean unexposed face temperature.
11.5.2.2 Door frame
‘ihe door frame of lift landing doors can include the following parts; the horizontal top member which may include the door mechanism (on sliding and folding doors), two vertical members and an over panel. No thermocouples shall be placed on the horizontal top member including the door mechanism.
The side panels and over panels more than 300 mm width or height shall be provided with one thermocouple for each square meter or part thereof, subject to a minimum of two thermocouples.
These thermocouples shall not be located closer than 100 mm to any joint, stiffener or through component, nor closer than 100 mm to the edge of the side/over panel.
lithe height of the over panels or width of the side panels are equal or smaller than 300 mm no thermocouples are required for determining the mean temperature rise.
The average insulation performance of each area shall be determined.
11.5.3 Position of the thermocouples to determine the maximum temperature
11.5.3.1 Door leaf (leaves)
The maximum temperature shall be determined from the thermocouples fixed to determine the mean temperature rise (as given in 11.5.2.1).
11.5.3.2 Door frame
The maximum temperature shall be determined from the thermocouples fixed to determine the mean temperature rise (as given in 11.5.2.2). For side panel width and over panel height greater than 300 mm. these shall be provided with one thermocouple for each square meter or part thereof, subject to a minimum of two thermocouples. For side panel width and over panel height between 300 mm and 100 mm only one thermocouple shall be fixed at the centre of each member. BS/EN 81-58-2018 pdf download.