On Sunday, 25 November 2018 21:44:03 UTC, ARW wrote:
Exactly a quid from a quid shop, but I'm not sure I'd trust my life to them
Messrs CPC's GP High Power Alkaline are £9.51/10
Ultralife Lithium Manganese 10 year shelf life are £6.75 *each*
Plus the VAT, of course.
On Mon, 26 Nov 2018 02:07:01 -0800, spuorgelgoog wrote:
Given that they do Duracell Industrial ones for £9.95/10 (as above, plus
VAT), I think I'd go for those. The GP ones are OK, but the Duracells
seem a lot better.
(that price is to be found in most of their 'brochures', including the
Bulk Bargains one. Find these online if CPC don't send them to you. The
part number is the same but with a time limited two digit suffix.
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
On Sun, 25 Nov 2018 10:11:49 -0800 (PST), firstname.lastname@example.org wrote:
Well I have come across a battery powered ionisation alarm originally
positioned just outside a kitchen door which had been relocated by the
occupant to a bread bin inside the kitchen to shut it up but that
oddity aside neither optical nor ionisation alarms are suitable for
kitchens no matter how much fiddling with position to find pockets of
unmoving air one does.
Current guidance is in BS 5588 11990, Fire precautions in the design,
construction and use of buildings. BS EN 14604 covers Smoke alarm
A simple summary is (in England and Wales) Building Regulations
Document B (Volume 1).
Building Regulations Document B requires a minimum of Grade D
Category LD3 Mains powered interlinked alarms with an integral
back-up power supply.
This covers new builds, materially altered dwellings, loft
conversations and certain building extensions for standard dwellings.
All dwellings should be provided with an alarm system to at least
Grade D, Category LD3 means the installation of mains powered alarms
with an integral back-up power supply within the escape routes of the
property (i.e. hallways and landings). In addition, the Regulations
require a heat alarm to be installed in any kitchen areas where the
kitchen is not separated from the circulation space or stairway by a
Approved Document B (Fire safety) Volume 1: Dwelling houses (2006
edition incorporating the 2010 and 2013 amendments) is the simplest
summary (and free) at
" Positioning of smoke and heat alarms
1.10 Detailed guidance on the design and
installation of fire detection and alarm systems
in dwelling houses is given in BS 5839-6:2004.
However, the following guidance is appropriate
to most common situations.
Smoke alarms should normally be positioned in the circulation spaces
between sleeping spaces and places where fires are most likely to
start (e.g. kitchens and living rooms) to pick up smoke in the early
stages of a fire.
There should be at least one smoke alarm on every storey of a
Where the kitchen area is not separated from the stairway or
circulation space by a door, there should be a compatible interlinked
heat detector or heat alarm in the kitchen, in addition to whatever
smoke alarms are needed in the circulation space(s)."
The use of optical or ionisation detectors in kitchens is deprecated.
I don't think he said they are. Often it depends on the construction of the
building. Some blocks are designed so any fire in one flat is isolated by
the doors and windows of that build. IE what should have happened at
Grenville but was cocked up by the refurbishers.
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