Successful tests point the way to ‘industry changing’ fire door breakthrough

August 17 2020

A series of successful fire insulation tests concluded this week suggest that an ‘industry changing’ fire safety breakthrough is on the horizon for the UK’s construction and infrastructure sectors.

Rhino Doors, the UK’s leading designer and manufacturer of bespoke and CPNI-rated engineered doors, has this week completed the first stage of putting its new range of El2 rated insulated fire doors thorough a series of indicative and full-scale fire tests.

Rhino Doors’ El260 reaching the hour mark during its fire test at Warringtonfire where the door protected against temperatures reaching 945oC.)
(Rhino Doors’ El260 reaching the hour mark during its fire test at Warringtonfire where the door protected against temperatures reaching 945C.)

The tests, carried out at Warringtonfire on Rhino’s El260 fire door, exceeded expectations achieving significant overruns on both integrity and insulation exposure time targets, with the insulation overrun in particular indicating that the much more demanding performance required for an El2120 rated product will be met during future development tests later this year.

The breakthrough

At present, steel fire doors with insulation ratings are not routinely used on major projects – this is largely due to the availability and specification barriers presented by existing insulated steel fire door products. Should further tests prove successful then Rhino Doors’ new range of El2 rated insulated fire doors will change this by offering specifiers access to steel fire doors with insulating ratings that are best practice, life safety options for all major construction projects in the future.

Rhino’s new El2 range will make insulated fire doors far more widely available and affordable – meaning everything from high-rise projects to stadia and rail stations will be able to fit fire doors with higher insulation performance than any other currently on the market – radically improving fire safety across the UK and beyond.

The test

Commenting on the successful test of the doors, Stuart Lawrence, Managing Director of Rhino Doors, said:

“When Rhino Doors’ special projects section identified that many current infrastructure projects do not specify insulated fire doors due to existing doors being overly expensive, aesthetically unpleasing or not offering the right level of protection, we wanted to change this situation.”

Illustrated above is the test protocol for the EN1634-1 standard which requires the furnace to increase in temperature at a prescribed rate, following the blue curve above. The test is particularly onerous with the door having to withstand +500C within just 4 minutes and over 900C by 45 minutes
(Illustrated above is the test protocol for the EN1634-1 standard which requires the furnace to increase in temperature at a prescribed rate, following the blue curve above. The test is particularly onerous with the door having to withstand +500C within just 4 minutes and over 900C by 45 minutes.)

“The special project team’s solution has exceeded expectations. During the test Rhino’s El260 door continued to provide the required insulation protection as well as the standard integrity performance for an hour against temperatures reaching 945oC. This is the sort of temperature typically associated with ‘cellulistic’ fires where wood and other combustibles are the fuel; in other words, similar temperatures to building fires.”

“We’re very pleased with the results of this test which indicates we are not far from developing an insulated fire door with a two-hour rating which will have a hugely positive impact upon fire safety in the construction and infrastructure sectors.”

Further developments

As well as creating steel fire doors with the highest insulation performance on the market, Rhino Doors is also working on versions of the doors that will protect against other threats as detailed by Rhino’s Chief Engineer, Dr. Chris Norris:

“In addition to the achievement of the highest possible El fire ratings, out ultimate objective is to produce two new products that also provide the acoustic attenuation, physical attack and static pressure resistance increasingly demanded by specifiers and architects for major construction projects such as rail stations, stadia, and high-rise accommodation.”

Further tests of Rhino’s new El2 rated insulated fire doors are scheduled to take place this autumn.

MORE ARTICLES

December 01 2020

Rhino adoption for Rhino

At Rhino Doors, we pride ourselves on our bespoke range of engineered doors which have the strength to protect national assets. However, this strength and protection is also prominent in the wild and in captivity with the protection of rhinos.   That’s why we are delighted to announce that we have successfully adopted an Eastern black […]

READ MORE

November 26 2020

Spotlight on Team Rhino: Jan McPherson

In this, the latest edition of the Spotlight on Team Rhino series, we speak to Commercial Director Jan McPherson.

READ MORE

November 19 2020

Rhino celebrates long service

Rhino Doors – one of the UK’s leading manufacturers of engineered doors – has marked the long service of three key members of staff, with more than 80 years at the company between them. (Pictured left to right, Steve Pirie, Neil Chappell and Steve Bruton.) The trio, Neil Chappell, Steve Bruton and Steve Pirie, all […]

READ MORE