BS EN 1366-2 (Test standard)
Gives requirements for testing dampers to the standard time/ temperature curve with a requirement to close within two minutes of the start of the test. After closure a 300Pa pressure differential is applied to the damper and the damper leakage (corrected to 20°C) is recorded throughout the rest of the test. The largest size of damper to be offered for sale must be fire tested. Pass and fail criteria is included in the standard.
Integrity E - The damper must leak no more than 360m³/hr/m² at any point during the test.
- Optional Integrity and Leakage ES - the damper must leak no more than 200m³/hr/m² at any point during the fire test. This also applies to the largest and smallest size of damper to be offered for sale at ambient temperatures for the ES criteria to be applicable.
- Optional Insulation I - insulation rating not required by legislation for dampers in the UK.
BS EN 13501-3 (Classification Standard)
States times and performance to enable the classification of fire dampers (E, ES and I requirements).
BS EN 15650 (Product standard)
Contains the basic performance and requirements for fire dampers.
System Design & Related Standards
BS 9999 code of practice for fire safety in the design, management and the use of buildings provides guidance on the ongoing management of fire safety in a building throughout the entire life cycle of the building, including guidance for designers to ensure that the overall design of a building assists and enhances the management of fire safety. It can be used as a tool for assessing existing buildings, although fundamental change in line with the guidelines might be limited or not practicable.
The standard builds on government guidance to legislative requirements, providing an advanced approach to fire safety in the design, management and use of buildings. It promotes a more flexible approach to fire safety design through use of structured risk based design where designers take account of varying human factors.
BS EN 12101-6 Smoke and heat control systems. Specification for pressure differential systems gives test procedures for the systems used, as well as describing relevant and critical features of the installation and commissioning procedures needed to implement the calculated design in a building. It covers systems intended to protect means of escape such as stairwells, corridors and lobbies, as well as systems intended to provide a protected fire fighting bridgehead for the Fire Services.
LPS 1162 is a typical product certification standard. It contains all the tests that the Loss Prevention Certification Board (LPCB) requires the product to undergo, before certification may be offered. It also states that to meet it, a company must have full BS EN ISO 9001 accreditation. The LPCB visit the factory at least once a year to confirm by measurement that the certificated products maintain all the tested dimensions, and confirm that the products still comply with any assessments that may have been made. Using certificated products mean less time needs to be taken checking up that products meet the required standards, as a third party is making sure that this is the case
Extended Fields of Application (Assessments)
Under BS EN 1366-2 etc specific documents are being drafted for the extended field of application for all products. It is becoming clear that assessments for small component changes and the use of units smaller than those tested are allowable. However the use of methods of installation other than that tested will lead to problems, with assessments being difficult to acquire. The reason for this is the fact that the test is passed or failed based on the leakage of the unit during the test, as well as any failure at the boundary between the damper and the supporting construction. The damper closing is just the start of the test. The laboratories are unwilling to state that a change in building in method will not affect the leakage performance. Previously, under the BS 476 ad-hoc testing, assessments were forthcoming with respect to installation, this was because the test pass or fail criteria were purely mechanical with gap gauges etc, not leakage measurement.