Kuehne + Nagel / Intelligent Energy

Kuehne + Nagel / Intelligent Energy

Company / Project Profile

  • Designed and supplied a bespoke system
  • Required to monitor potential Hydrogen gas release

Key Facts

  • Provision of a fire & gas detection system in a modular building
  • Integrated a (non-addressable) fire alarm panel and Combi Gas Detection Panel
  • Aspirating sensors used for 'point' sampling and monitoring the integrity of pipework

Multi-sensor fire detectors were installed throughout the building recognising the potential fire risks associated with the use of electrical test equipment and storage of Class A packaging materials.

James Ward - Project Engineer
April, 2015

Frontline Safety were approached by an existing customer to provide an adaptable solution for the provision of a fire and gas detection system within a modular building being used within a third parties premises.

The design brief required Frontline Safety to produce a detection system that would monitor a manufacturing process using Hydrogen Gas, as well as fulfilling the needs of a fire detection system in accordance with the recommendations of BS 5839 part 1. A modular building was being adapted by the customer for a specialist application where Hydrogen fuel cells would be re-filled and tested as an element of the product’s logistics chain.

The fire and gas detection system comprised of integrated (non-addressable) fire alarm panel and a Combi gas detection panel. Multi-sensor fire detectors were installed throughout the building recognising the potential fire risks associated with the use of electrical test equipment and storage of Class A packaging materials. Gas detectors were installed in the room where the process utilising Hydrogen was to be used. Aspirated gas sensors, utilising sample pumps at mid-level around the room with their respective sample tubes installed at high level (recognising that Hydrogen Gas will tend to rise to the highest point within the room) were used to provide an effective means of “point” sampling. Aspirated sensors were also used to monitor the integrity of the double-walled Hydrogen supply pipework, by sampling the air in the space between inner and outer pipe walls.

In the event of a high level gas alarm or fire alarm the Hydrogen supply would be isolated into the building by the operation of a failsafe ATEX rated gas shut-off valve.

The design of the system had to recognise the subtle difference between design codes for fire detection and gas detection and needed to acknowledge that, as the only fire detection equipment installed within the modular had to provide sufficient detection to satisfy the demands of the client’s fire risk assessment.

Variations to the design codes had to be sympathetic to the statutory demands of said codes, and yet satisfy the necessary functionality of the system. In order to shut-down the Hydrogen Gas Supply in the event of a fire or gas alarm, and provide the statutory audible/visual alarms required by the fire code EN54 pt 23.

These changes were managed, documented, and identified within the Operating & Maintenance Manual’s certificate register.

Despite a challenging work programme the project was installed, commissioned and testing within the required project timescale.

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