FSR

Technical details

4.105

FLEXWELL® Safety Pipe

System descriptio

n

Leak monitoring

The FLEXWELL® Safety Pipe is permanently monitored usin

g

pneumatic leak detection devices/leak detectors. Thes

e

regulate the monitoring pressure in the surveillance space and

register any changes of pressure which may occur.

The surveillance space prevents the uncontrolled escape o

f

the transport medium into the environment in the event of a

leakage. The surveillance space must be constructed in such

a way that the proper functioning and operating safety of the

leak detection system is ensured under all operating condi

-

tions

.

In the case of a leakage the alarm is given by acoustic an

d

optical signals

.

Definition of a leak detection syste

m

A “leak detection system” according to currently valid regu

-

lations is a device which is capable of warning automatically

of leaks in the walls of double-walled piping transporting wa-

ter-hazardous (flammable and non-flammable) fluids under al

l

operating conditions. All equipment necessary for the detec-

tion of leaks is included under the term leak detection system

/

leak detector

.

The main components are:

-

the leak detector(LAZ)/leak detection devic

e

-

the surveillance space (ÜR

)

-

the connection to the leak detector ÜR – LAZ

-

the double-walled piping

-

a leak detection medium

The use of these systems is

compliant with the highes

t

European safety standards

(Class I). Systems of this Class

will detect any leak above o

r

below the fluid level within a

double-walled protective system

.

They are constructed with safety

in mind and ensure that no fluid

can escape into the environment.

DLR

-

G ..

.

FLEXWELL

®

Safety Pip

e

with positive

pressur

e

leak monitorin

g

08.12.2020 Subject to technical changes. Page 5

Leak detector (LAZ)/leak detection devic

e

A distinction is made between two types of di

fferential pres-

sure leak detection device for leak monitoring to detect an

d

report leaks in surveillance spaces of double-walled piping ei-

ther the vacuum principle or the positive pressure principl

e

with an inert gas

.

Approval/suitabilit

y

All leak monitoring systems must comply with the established

construction and testing principles. This means that all the

conditions must be considered which might influence th

e

function and operating safety of the system. Consequently th

e

conditions for operation are tested by the competent authori-

ties and clearly defined and stipulated in the approvals issue

d

by them

.

FLEXWELL® Safety Pipe with leak monitoring is an approve

d

leak detection system

.

Advantages of the syste

m

The use of double-walled FLEXWELL® Safety Pipe with lea

k

monitoring has, besides o

ffering excellent operational safety

,

significant economic advantages

:

-

the entire system can be simply checked at any tim

e

without any downtime in operation

s

-

requirements such as e.g. pressure or volume measure-

ments, pressure tests or inspection of the route can be

eliminate

d

VLR ...

FLEXWELL

®

Safety Pip

e

with vacuu

m

leak monitoring