CEA 4001 - Annex L Early suppression fast response sprinkler systems; General

190 pages

Save Page as PDF

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

169

A

Annex L

Early suppression fast response sprinkler systems

L.1 General

L.1.1 Scope

This

annex

specifies

design

and

installation

requirements

for

Early

Suppression

Fast

Response

(ESFR)

sprinkler

systems.

ESFR

sprinklers

are

quick

acting

high

performance

sprinklers

which

have

the

capability

of extinguishing

fires

within

designated

risks.

There

is

little

room

for

error

in

the

design

and

installation

of

ESFR sprinkler

systems;

the

design

principles

and

the

operating

characteristics

are

significantly

different

from

standard sprinkler

protection.

ESFR

sprinklers

may

not

succeed

with

adverse

design

features

and

non-

compliances,

which may

be

common

practice

when

installing

standard

sprinkler

protection.

It

is

therefore

essential

that

all

the requirements

of

this

annex

are

complied

with,

without

exception,

when

applying

ESFR

protection.

With

the

exception

of

the

clauses

identified

at

1.4.1,

all

the

requirements

of

the

CEA

prevention

specification

4001

are

applicable

when

installing

ESFR

sprinklers.

Preliminary

agreement

of

the

authorities

is

essential

before

selecting

ESFR

sprinklers

to

be

used

in

a

sprinkler

installation.

EFSR

sprinklers

are

mainly

used

if

in-racks

sprinkler

cannot

be

installed

for

technical

reasons.

NOTE:

preliminary

design

considerations

shall

be

carried

out

to

determine

if

the

building

construction

is

suitable

for

the

use

of

ESFR

sprinklers.

L.1.2 Definitions

Sprinkler,

ESFR

pattern

:

Nozzle

with

a

thermo sensitive

sealing

device

which

opens

to

discharge

water, distributing

it

in

a

specified

pattern,

with

sufficient

momentum,

over

a

designated

area

to

achieve suppression

of

a

fire

or

inhibit

growth

when

connected

to

the

appropriate

piping

and

water

supplies.

L.1.3 ESFR sprinklers

ESFR

sprinklers

shall

be

quick

(thermal)

response

and

have

one

of

the

following

temperature

ratings:

Bulbs:

68°C

93°C

Fusible

element:

68

to

74°C

93

to

104°C

The

higher

temperature

ratings

shall

only

be

used

where

needed

because

of

high

ambient

temperature conditions.

The

nominal

k

factor

of

ESFR

sprinklers

shall

be

between

200

and

360.

L.1.4 Application

L.1.4.1

The

following

clauses

of

the

CEA

rules

for

Automatic

Sprinkler

Systems

-

Design

and

Installation

are

Table of Contents