fire dampers smoke control dampers fire resisting ductwork ... seminar 2014/6. pw ducts.pdf · fire...

Fire DampersSmoke Control DampersFire Resisting DuctworkSmoke Control Ductwork

January 2014

Paul White

Everyone knows what this is…

DUCTS PENETRATING COMPARTMENT WALLS2

FIRE DOORS

Most people see one every day


STANDARDDUCTWORK

But look up or go above the false ceiling

And you should find ordinary DW144 steelductwork for ventilation air which will often pass

through the partition above doors, but will also gothrough at other points too..

And you should find things that are less well known


FIREDAMPERS

Where normal ventilation ductwork passes throughcompartment boundaries, the penetration and

compartment must be protected by a fire damper. It isa common misconception that fire dampers protect

ductwork, what they actually do is maintain thecompartmentation which is why they must be installed

correctly

An alternative is


FIRERESISTINGDUCTWORK

In some instances fire resisting ductwork may beinstalled. This is also designed and tested to

maintain compartmentation, and consequentlymust be constructed and installed correctly at the

compartment wall

Installation


INSTALLATION

With installations it is often what is not seen that is important and must begot right during installation, support at the wall is critical for both dampers

and ducts, otherwise they might collapse at the wall and lose integrity

Penetration seals only tested with pipes and cables are not proven foruse with dampers and ducts, unless they have been tested with dampersand ducts, so duct nand damper manufacturers cannot support this type

of installation unless thay have done specific testing. This situation isoften overlooked on site, but may peove an issue if found after the event.

Test information

Fire dampersFire dampers should be tested to BSEN1366-2.

Escape routes and areas with sleeping risk should be protected with ESclassified motorised fire dampers that respond to smoke alarms

Curtain fire dampers only have an E classification

Dampers tested ad hoc to BS 476 will be acceptable in older installationsbut not really in new ones.

The Construction Products Regulation (CPR) now requires that firedampers are CE marked and installed in line with manufacturers'instructions, which is generally as they have been tested.

CE marking is to EN15650 and requires testing to BS EN 1366-2 and thirdparty certification


TESTINFORMATION

Test information

Fire resisting ductsFire resisting ducts should be tested to BSEN1366-1 or BS476-24.

The latter is still allowed until such products have a standard publishedthat requires CE marking. The standard is well under way, but it is notclear exactly when it will be published.


TESTINFORMATION

Test information

Smoke control ductsSmoke control ducts should be tested to BSEN1366-8 for fire resistance formulti compartment installations

Smoke control ducts should be tested to BSEN1366-9 for 600°Cperformance (and below) for single compartment installations

CE marking is generally required under the requirements of BS EN12101-7


TESTINFORMATION

Test information

Smoke control dampersSmoke control dampers should be tested to BSEN1366-10 for fireresistance for multi compartment installations and 600°C performance (andbelow) for single compartment installations

CE marking is generally required under the requirements of BS EN12101-8

They can be employed in smoke control ducts and in fire resisting ductsand there are other applications where such dampers are required to beopen on a fire floor to allow smoke to be exhausted and closed in otherareas


TESTINFORMATION

Regulatory Guidance

Approved Document B (ADB) – gives guidance to the buildingregulations

BS9999 – additional guidance referred to in ADB

HTM05-02 – additional information for hospitals

BB100 – additional information for schools and colleges

Regulatory Reform (Fire safety) Order (RRFSO) – requirements forfire safety in the running of buildings requiring information on how allthe above are met, where items are installed and how they are to bemaintained

Building Regulation 38 – requires that all information with regard tofire protection measures is passed over at handover.


REGULATORYREFERENCES

Additional Guidance

ASFP Grey Book – Fire dampers

ASFP Blue Book – Fire Resisting and Smoke Control Ductwork

DW/144 – Sheet metal ductwork

DW/145 – Fire damper installations

HTM05-02 – additional information for hospitals


ADDITIONALGUIDANCEREFERENCES

Maintenance

Maintenance regimeDoes this exist for any fire dampers, fireresisting ducts, smoke control ductwork andsmoke control dampers?Is the responsible person aware of thisrequirement?Do adequate records of testing and inspectionexist?Do the records note any and all remedialaction to the fire dampers and ducts (etc.) andto the seal between them and the supportingconstructionsRefer to Annex V and Annex W of BS9999


MAINTENANCE

WRONG


WRONG

-1-

The damper is not in the plane of the wall and the duct is not protected.Has the damper been tested in association with batt? If fire resisting, is the

duct supported around its outside at its joint with the wall

WRONG


WRONG

-2-

The dampers are not in the plane of the wall, the duct is not protectedand it is unlikely that the dampers have been tested passing through a

hole in a steel beam

WRONG


WRONG

-3-

!

RIGHT


RIGHT

-1-

The damper is within the plane of the wall, the installation is complete andwithout any damage to the seal around the damper.

Note: However, it needs to be checked that damper has been tested in a battinstallation, especially for ES requirements

THANK YOU FOR LISTENING

Fire DampersSmoke Control DampersFire Resisting DuctworkSmoke Control Ductwork

January 2014 Paul White

fire dampers smoke control dampers fire resisting ductwork ... seminar 2014/6. pw ducts.pdf · fire...

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