LD

S

Technical details

8.100

Leak monitoring system

s

Leak monitoring for double-walled piping

System descriptio

n

The leak monitoring

Double-walled piping is permanently monitored using pneu

-

matic leak detecting devices. These regulate the monitoring

pressure in the surveillance space and register any changes

of pressure which may occur. The surveillance space prevents

uncontrolled spillages of the transport medium when leaks

occur. The surveillance space must be so constructed tha

t

the functioning and operative security of the leak monitoring

system (the leak detector) is assured at all times. The size if

the surveillance space for each leak detector is limited to 10 m3

acc. to DIN EN 13160.

If the pipe is damaged the alarm is given by acoustic and opti

-

cal signals

.

Definition of leak detection equipment/leak detecto

r

“Leak detection equipment/leak detector” according to th

e

currently valid regulations refers to a device which automati-

cally and under all operating conditions gives warning of leak

s

in the walls of double-walled piping in which water hazardou

s

(flammable and non-flammable) fluids are transported. The

term “leak detection equipment/leak detector” includes all the

equipment necessary for the detection of leaks

.

The main components are

:

•

the leak detector/leak monitoring equipmen

t

•

the connection between the surveillance space and

leak detector

)

•

double-walled piping

:

FLEXWELL® Safety Pip

e

BRUGG-STAMANT® Safety Pipe

SECON®-X Petrol station pip

e

•

the surveillance spac

e

•

a leak detection medium

The use of this system complies with the most stringent Euro

-

pean safety standards (Class 1). Systems of this class giv

e

warning of a leak above or below the

fluid level in a double-

walled protective system. They are constructed on the princi-

ples of absolute safety and ensure that spillages of products

into the environment cannot occur

.

Leak detecto

r

We distinguish two types of di

fferential pressure leak detection

equipment: Leak surveillance to detect leaks in double-walled

piping on the vacuum principle and on the positive pressure

principle

.

Approval/suitability

All leak detection equipment/leak detectors in use must

comply with the basic criteria laid down for construction an

d

testing standards. All such preconditions which could have a

bearing on the functional and operative safety of the syste

m

must therefore be observed.

It therefore goes without saying that the conditions for oper-

ative use have been tested by the competent authorities an

d

clearly de

fined and set down in the documents of approval

issued by them.

Double-walled piping with leak monitoring is an approved leak

detection equipment/leak detector system.

The advantages of the system

Using double-walled FLEXWELL® Safety Pipe with leak mon-

itoring offers, besides a high degree of operative safety, sub-

stantial economic advantages

:

•

•

•

the entire system can be easily and simply monitored at an

y

time without interrupting operation

s

requirements such as e.g. pressure/volume measurements

,

pressure tests or route surveys can be dispensed wit

h

when a leak occurs, operations can normally be continued

without interruption; repairs can be planned

.

double-walled piping with

vacuum leak detector

double-walled piping with

positive pressure leak detecto

r

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31.03.2026 Subject to technical changes. Page 3