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166

or deluge

system):

ƒ

material

storage

bunker

ƒ

comminuting

systems

(e.g.

shredders,

mills)

ƒ

drying

systems

ƒ

silo

systems

The

maximum

storage

heights

for

bulk

storage

and

bale

storage

are

given

in

table

K8

and

the

design

data

in table

K9.

T

Table 59: Maximum bulk and bale storage heights (K8)

Max.

storage

height

Max.

room

height

Bulk

storage

5.0

m

9

m

Bale

storage

4.0

m

9

m

Table 60: Design data for sprinkler systems for bulk and bale storage (K9)

Density

of

discharge

17.5

mm/min

-

Area

of

operation

260

m²

wet

system

325

m²

dry

system

Sprinkler

sensitivity

‘quick’

Extinguishing

agent

water

with

film-forming

foam

time

of

operation

Water

supply

90

min.

Foam

supply

60

min.

For

local

protection

of

the

equipment

present

in

the

sorting

area

a

density

of

discharge

of

7.5

mm/min

is

required. Special

or

quick

response

sprinklers

shall

be

used.

If

dry

pipe

systems

are

required

for

the

protection

of

bulk

and

bale

storage,

it

shall

be

ensured

that

an opening

of

the

test

fitting

at

the

end

of

the

pipework

induces

the

discharge

of

water

after

20

s

at

the

latest.

K.10.3

Design

data

of

deluge

systems

in

recycling

plants

A

deluge

system

shall

be

used

for

enclosed

mechanical

conveyor

equipment

such

as

long

belt,

chain

and spiral

or

vibratory

conveyors

with

a

density

of

discharge

of

7.5

mm/min.

Note:

Alternatively

to

sprinkler

protection

according

to

section

K10.2,

bulk

and

bale

storage

may

be protected

by

a

deluge

system

with

a

density

of

discharge

of

17.5

mm/min

and

a

proportioning

of film-forming

foam,

provided

that

the

storage

heights

are

in

accordance

with

table

K9.

Area

of

operation

for

deluge

systems

The

area

protected

by

one

deluge

installation

shall

be

not

less

than

100

m²

except

rooms

with

an area

of

less

than

200

m².

The

water

supply

shall

be

capable

to

supply

the

total

area

of

operation.

The total

area

of

operation

shall

be

found

by

assuming

a

fire

at

the

borderline

between

adjacent

areas protected

by

different

deluge

installations.

All

areas

are

to

be

supplied

at

the

same

time

which

are touched

by

a

radius

of

7

m

from

the

most

unfavourable

possible

location

of

a

fire.

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