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FIRE SERVICE AND GENERAL FIRE SAFETY TOPICS => Fire Safety => Topic started by: hammer1 on March 22, 2017, 01:04:25 PM

Title: Manual release controls for electronically secured doors
Post by: hammer1 on March 22, 2017, 01:04:25 PM

Afternoon

We have a construction company stating that some of our electronically secure doors that are located on a means of escape do not require manual release controls (green break glass units) as they failsafe on fire alarm activation.

Is this in line with BS 7273 Part 4 requirements?

Many thanks

Title: Re: Manual release controls for electronically secured doors
Post by: William 29 on March 22, 2017, 01:27:54 PM

Er..nope

Title: Re: Manual release controls for electronically secured doors
Post by: hammer1 on March 22, 2017, 01:40:46 PM

Quote from: William 29 on March 22, 2017, 01:27:54 PM

Er..nope

Thought not... thanks for prompt reply.

Title: Re: Manual release controls for electronically secured doors
Post by: wee brian on March 22, 2017, 02:35:37 PM

Just point them at the building regs - AD B covers this

Title: Re: Manual release controls for electronically secured doors
Post by: hammer1 on March 24, 2017, 02:51:26 PM

Quote from: wee brian on March 22, 2017, 02:35:37 PM

Just point them at the building regs - AD B covers this

They have stated only 2 of the 3 requirements need to be implemented in reference to ADB (section 5.11)?

Title: Re: Manual release controls for electronically secured doors
Post by: David Rooney on March 27, 2017, 03:45:04 PM

Don't know where they get that from ....

5.11 basically says electronically locked doors should release on

a. fire condition
b. loss of power or
c. activation of a manual release unit.

There's no 2 out of 3 as far as I can see.

Re 7273-4 an emergency manual release is needed directly in line with the power to the locking mechanism in case the for whatever reason, the automated signal from the fire alarm should fail.

Title: Re: Manual release controls for electronically secured doors
Post by: Mike Buckley on March 27, 2017, 05:58:58 PM

Wilful misreading of the document?

Title: Re: Manual release controls for electronically secured doors
Post by: David Rooney on March 28, 2017, 12:19:14 PM

Probably ... it would also be interesting to hear their definition of "failsafe" as I suspect it will be different from the definition within 7273-4 ....

it would also be handy to know the 7273-4 category of each door .....