FireNet Community

FIRE SERVICE AND GENERAL FIRE SAFETY TOPICS => Fire Safety => Topic started by: jakespop on December 10, 2008, 08:23:53 PM

Title: Fire Alarm Standards in Offices
Post by: jakespop on December 10, 2008, 08:23:53 PM
I have recently inspected a three storey building used as offices. Alternative external escape from all floors and one protected internal staircase. Existing alarm consists of manual call points with smoke detection in protected staircase and in a couple of risk rooms. I believe this to be sufficient, yet a fire alarm installer has now recommended upgrading to L2 system to comply with new regs. Have I missed something? Any views would be welcome.
Title: Re: Fire Alarm Standards in Offices
Post by: nearlythere on December 10, 2008, 08:52:03 PM
I have recently inspected a three storey building used as offices. Alternative external escape from all floors and one protected internal staircase. Existing alarm consists of manual call points with smoke detection in protected staircase and in a couple of risk rooms. I believe this to be sufficient, yet a fire alarm installer has now recommended upgrading to L2 system to comply with new regs. Have I missed something? Any views would be welcome.
Key words here are recommended to comply with new regs.
On what grounds should it be and has installer carried out a FRA?
Title: Re: Fire Alarm Standards in Offices
Post by: kurnal on December 10, 2008, 09:03:48 PM
This is happening everywhere. Too many people are taken in by this - there is a constant drive particularly by one of the big names in the alarm industry to meet sales targets and in the current challenging business climate they are doing this by convincing their maintenance clients that they need to upgrade to L1 "to comply with the new standards".

And the sad thing is that their standing and reputation means that people listen. I specced one office building for a local council as Cat M- it finished up with L1. As a result of this victory the same firm has now convinced them that the perfectly adequate and serviceable L3 system in HQ needs to be replaced with a new L1 system.
Title: Re: Fire Alarm Standards in Offices
Post by: nearlythere on December 10, 2008, 10:05:55 PM
Jakespop.
Where necessary (whether due to the features of the premises, the activity carried on there, and hazard present or any other relevant circumstances) in order to safeguard the safety of relevant persons, the Responsible Person must ensure that-
(a) the premises are, to the extent that it is appropriate equipped with.........fire detectors and alarms.

It is the responsibility of the Responsible Person to determine the level of detection that should be provided which will be based on the level of fire risk that has been assessed. It may well be none.
Title: Re: Fire Alarm Standards in Offices
Post by: Chris Houston on December 10, 2008, 10:25:48 PM
In most offices there would be very little difference between an L1 and an L3.
Title: Re: Fire Alarm Standards in Offices
Post by: jakespop on December 10, 2008, 10:39:55 PM
Thanks for responses. I am actually carrying out the fire risk assessment and if it had no detection at all I would not be concerned. I would assess it as category M, but certainly not L2. I understood there was an amended 5839 just out, has it changed anything in particular. Mr Todd may like to respond???
Title: Re: Fire Alarm Standards in Offices
Post by: Allen Higginson on December 11, 2008, 12:25:50 AM
I have recently inspected a three storey building used as offices. Alternative external escape from all floors and one protected internal staircase. Existing alarm consists of manual call points with smoke detection in protected staircase and in a couple of risk rooms. I believe this to be sufficient, yet a fire alarm installer has now recommended upgrading to L2 system to comply with new regs. Have I missed something? Any views would be welcome.
Is the access to the internal and external staircases protected by smoke detection (i.e. - the corridors leading to same).
Aside from an L5 system (which is for a specific solution to a specific requirement) the minimum an L4 system would cover is the staircases plus corridors leading them.Additional detection over and above this in areas of specific risk would still be counted as part of the main category design (L4) - presently (and Im assuming that there is a corridor) your current system in this case would not be an L4.An L2 would be additional detection in the corridor plus rooms leading onto it.
However,I agree that the use of the words "recommended" and "to comply" is sales man talk but it may be valid in this case.
Something that might fit this situation is a site I used to maintain in Belfast that was a three storey old house converted into offices.It had a main front door with a front staircase,from which there was access to three offices on each floor.There was also an external rear staircase that the first and second floor offices had access to. Detection had been installed in the front staircase at the ground,first and second floors.My point on this one was that although there was a straight (-ish) corridor within the offices between the two exits there was no protection for this escape route if you were in one of the offices off it.Client was in agreement that,as a minimum,they install detection in the office escape routes to the actual staircases.
Title: Re: Fire Alarm Standards in Offices
Post by: Clevelandfire 3 on December 11, 2008, 01:32:56 AM
In most offices there would be very little difference between an L1 and an L3.

You've lost me there Chris could you ellaborate?
Title: Re: Fire Alarm Standards in Offices
Post by: Chris Houston on December 11, 2008, 07:49:38 AM
In brief summary L3 = all escape routes and all rooms that open into escape routes. In most offices I see most rooms either are escape routes or open into escape routes.
Title: Re: Fire Alarm Standards in Offices
Post by: kurnal on December 11, 2008, 07:59:16 AM
Yes fair enough Buzz but a fire risk assessment MAY have found that a single main staircase was satisfactory and the external escape was unnecessary to meet the benchmark guidance standards for this building and the way it is used.There are many old buildings now used for  offices and commercial purposes   that had formerly been residential buildings or had multiple occupiers for which external staircases were required. Many of these are a liability in terms of safety, maintenance costs and security and the owners are often relieved when told that the thing can be dismantled if we focus instead on protection to the single internal staircase.
Title: Re: Fire Alarm Standards in Offices
Post by: jakespop on December 11, 2008, 09:41:56 AM
Taking into account the guidance in RRO Office guide, these offices have two direction travel, no dead ends, satisfactory travel distance, no high risk process/storage and a protected staircase. I still cannot see why it is necessary to move away from Category M albeit this premises already has limited detection.
Title: Re: Fire Alarm Standards in Offices
Post by: Allen Higginson on December 11, 2008, 09:59:47 AM
Not being up to brigade assesments etc. - what is the maximum number of employees permitted in a building before a fire alarm is necessary?
Title: Re: Fire Alarm Standards in Offices
Post by: nearlythere on December 11, 2008, 10:19:54 AM
Not being up to brigade assesments etc. - what is the maximum number of employees permitted in a building before a fire alarm is necessary?
Buzz. Basically under current N.I Legislation a Fire Certificate incorporating a means of giving warning in the event of a fire is required in a building where there is more than 20 persons employed or more than 10 on other than the ground floor (office, shop or factory), a hotel, B&B or guest house where sleeping accommodation is provided for more than 6 persons including staff, a leisure centre owned,managed ansd maintained by a Council, premises requiring a license or permit to operate under the betting and gaming legislation.
Anywhere else it is a recommendation.
When the new fire safety legislation commences next year, similar to mainland legislation, it will be as the FRA determines under the new Order.
Title: Re: Fire Alarm Standards in Offices
Post by: Midland Retty on December 11, 2008, 10:22:38 AM
Hi Buzzard

The requirement for a fire warning and detection system isn't based on the numbers of persons expected to use the premises.

The Regulatory Reform (Fire Safety) Order states that the responsible person must provide measures for detecting fire and giving warning in case of fire.

In a premises with a simple layout the shout of fire may be sufficient in achieving that requirement, rotary gongs or air horns maybe also be sufficient

However in a larger more complex premsies you might need to look at installing a manually operated fire alarm system consisting of manual call points, alarm sounders and in areas where fire could go undetected you may need to look at providing automatic fire detection.

You might think it rather onerous to provide a comprehensive fire alarm system for just a couple of employees (and in most cases probably would be) but it all depends on the size and layout of the premises, and this in particular is where risk assessment comes into play.
Title: Re: Fire Alarm Standards in Offices
Post by: Allen Higginson on December 11, 2008, 02:48:15 PM
Hi Buzzard

The requirement for a fire warning and detection system isn't based on the numbers of persons expected to use the premises.

The Regulatory Reform (Fire Safety) Order states that the responsible person must provide measures for detecting fire and giving warning in case of fire.

In a premises with a simple layout the shout of fire may be sufficient in achieving that requirement, rotary gongs or air horns maybe also be sufficient

However in a larger more complex premsies you might need to look at installing a manually operated fire alarm system consisting of manual call points, alarm sounders and in areas where fire could go undetected you may need to look at providing automatic fire detection.

You might think it rather onerous to provide a comprehensive fire alarm system for just a couple of employees (and in most cases probably would be) but it all depends on the size and layout of the premises, and this in particular is where risk assessment comes into play.
See Nearlys post - not quite out of the caves yet!
I agree that a good RA is ideal to determine detection levels,just not confident in those doing RA's!!
Title: Re: Fire Alarm Standards in Offices
Post by: nearlythere on December 11, 2008, 03:01:56 PM
Hi Buzzard

The requirement for a fire warning and detection system isn't based on the numbers of persons expected to use the premises.

The Regulatory Reform (Fire Safety) Order states that the responsible person must provide measures for detecting fire and giving warning in case of fire.

In a premises with a simple layout the shout of fire may be sufficient in achieving that requirement, rotary gongs or air horns maybe also be sufficient

However in a larger more complex premsies you might need to look at installing a manually operated fire alarm system consisting of manual call points, alarm sounders and in areas where fire could go undetected you may need to look at providing automatic fire detection.

You might think it rather onerous to provide a comprehensive fire alarm system for just a couple of employees (and in most cases probably would be) but it all depends on the size and layout of the premises, and this in particular is where risk assessment comes into play.
See Nearlys post - not quite out of the caves yet!
I agree that a good RA is ideal to determine detection levels,just not confident in those doing RA's!!
Last I heard was April 2009 for commencement of the Fire Safety sections of the 2006 Order. Things a little different in NI in that the Regulations have to for public consultation for 3 months first and if everything OK should be in place 1 month later. Don't ask why it didn't commence in May 2007 cos I don't know.
There is a little bit of conflict between the findings of a FRA in relation to an appropriate means of giving warning and that as in BS5839 but this shouldn't mean we can't work together.
Title: Re: Fire Alarm Standards in Offices
Post by: Steven N on December 11, 2008, 07:00:59 PM
I very much doubt if many premises have a true L1 system. Interestingly as we can see in the 1st post it isnt always the LAFB officers who are allegedly costing premises money with over onerous conditions. Or is it just us that are the bad guys?
Title: Re: Fire Alarm Standards in Offices
Post by: Dinnertime Dave on December 12, 2008, 09:12:11 AM
This is happening everywhere. Too many people are taken in by this - there is a constant drive particularly by one of the big names in the alarm industry to meet sales targets and in the current challenging business climate they are doing this by convincing their maintenance clients that they need to upgrade to L1 "to comply with the new standards".

Couldn’t agree more, I have issued a number of Notices to premises asking for a manual system on my return they have detection everywhere because the alarm company recommended it. But it isn’t just alarm companies, OFSTED on a number of occasions have told play group in village halls that they need to fit smoke detection to unoccupied rooms in case there is a fire. A fire in these rooms would not compromise the M of E and potentially put the group out of business.

Most Building Regulation consultations received indicate ' AFD to BS 5839' when a manual system will suffice.

I could go on
Title: Re: Fire Alarm Standards in Offices
Post by: nearlythere on December 12, 2008, 09:56:26 AM
Can't find any requirement in B Regs or ADB to provide fire alarm system.

However, can find where a means of giving early warning of fire should be provided, where appropriate.

Do designers/installers actually read the regs and related guidance?
Title: Re: Fire Alarm Standards in Offices
Post by: Chris Houston on December 12, 2008, 10:30:07 AM
Do designers/installers actually read the regs and related guidance?


When I worked in the industry (about 7 years ago) the answer would be no.  Our role would be to design the system to the specification supplied by the customer, not to decide what specification should be installed.  Often we would be asked to quote "for a fire alarm complying with <insert long list here>" from everything to DDA and Building Regs, but at not point would it say what category of system or what was defined as escape routes or areas of high risk" so we would just have to guess what was needed and quality it with written assumptions.
Title: Re: Fire Alarm Standards in Offices
Post by: nearlythere on December 12, 2008, 12:01:11 PM
This is happening everywhere. Too many people are taken in by this - there is a constant drive particularly by one of the big names in the alarm industry to meet sales targets and in the current challenging business climate they are doing this by convincing their maintenance clients that they need to upgrade to L1 "to comply with the new standards".

Couldn’t agree more, I have issued a number of Notices to premises asking for a manual system on my return they have detection everywhere because the alarm company recommended it. But it isn’t just alarm companies, OFSTED on a number of occasions have told play group in village halls that they need to fit smoke detection to unoccupied rooms in case there is a fire. A fire in these rooms would not compromise the M of E and potentially put the group out of business.

Most Building Regulation consultations received indicate ' AFD to BS 5839' when a manual system will suffice.

I could go on

There is money to be made saving people money.