Fire & Safety Fire alarm commissioning


ESP managing director Neil Baldwin provides a detailed look at the area of fire alarm commissioning, as outlined in the BS5839 standard documentation.


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he process of commissioning involves thorough testing of the installed system to ensure that it operates correctly in accordance with the recommendations of this standard and with the purchasing specification. At completion of commissioning, it also needs to be confirmed that all relevant documentation has been handed over to the user. The organisation responsible for commissioning the system might, or might not, be the same organisation that designed and/or installed the system, but the responsibility for commissioning needs to be clearly defined prior to the start of the installation work.


It is not, in general, the responsibility of the commissioning engineer to verify conformity of the design, or of the installation work, to this part of BS 5839 (i.e., with Section 2 and Section 4 of the standard). In general, the responsibility of the commissioning engineer is to verify that the system operates correctly in the manner designed and that the installation workmanship is generally of an adequate standard. However, in practice, it might be difficult to ensure that the system complies in full with all recommendations of Section 2 until the time of commissioning. For example, commissioning might represent the first (and only) opportunity to determine whether the number and distribution of fire alarm sounders is sufficient


“ESP provides its own commissioning service, which ensures that all installed ESP systems operate correctly and are fully compliant with the latest BS5839 regulations.”


to enable compliance with ‘clause 16.2’ in respect of sound pressure levels. Similarly, commissioning presents an opportunity to ensure that structural features of the building, of which the designer might have been unaware, do not compromise the effectiveness of the system as it was originally designed.


Verifying compliance


Accordingly, it is necessary for anyone responsible for commissioning a fire detection and fire alarm system to possess at least a basic knowledge of fire alarm design practices and of the recommendations of Section 2 and Section 4 of the standard. It is also necessary for the commissioning engineer to be provided with the specification for the system. In view of the importance now attached to the avoidance of false alarms, it is also essential that the commissioning engineer is able to verify compliance with, at least, the principles discussed in Section 3 of the standard.


24 | electrical wholesaler August 2024


Comprehensive fire protection As well as offering a comprehensive range of fire protection systems for the professional electrical contractor market, ESP provides its own commissioning service, which ensures that all installed ESP systems operate correctly and are fully compliant with the latest BS5839 regulations. This allows ESP to offer a full fire alarms systems package, with access to a free design service, a vast choice of products and solutions including the latest two-wire systems, the commissioning service, plus technical support from a team of qualified and experienced engineers.


There is much more to commissioning a fire protection system than simply turning it on and setting detector addresses. It involves going through a comprehensive step-by-step checklist to ensure full compliance with the correct British Standard and carrying out a range of tests to ensure reliable and trouble-free operation. ESP’s commissioning service ensures that a qualified engineer will confirm that the system has reached the relevant British Standard, and they will issue a certificate on completion of the project prior to system handover. Dedicated ESP commissioning engineers are located throughout the UK to provide access to this valuable service to a wide-reaching audience.


ESP also holds a BAFE (British Approvals for Fire Equipment) accreditation for its fire design service. BAFE is the independent registration body for Third


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