STAMANT Sys Descr

7/29/2019 STAMANT Sys Descr

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BRUGG Rohrsysteme GmbHAdolf-Oesterheld-Str. 31D-31515 WunstorfTel. (05031) 170-0Fax (05031) 170-170

BRUGG STAMANT

safety pipingfor water hazardousand flammable media

Double-walled pipe systemwith constant surveillancewith type approval

Systems description

1 Inner pipe

2Surveillancespace

3 Secondarycontainment

4 Corrosion-

proofing


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BRUGG Piping systeme GmbHAdolf-Oesterheld-Str. 31D-31515 WunstorfTel. (05031) 170-0Fax (05031) 170-170

STAMANT-Safety piping

Systems description

SMR

1.01.01

09/99

BRUGG STAMANT Safety Piping is aprefabricated double-walled piping system deli-vered in construction elements, in the dimensi-ons:

DN 15/32 bis DN 800/900,

which is particularly suitable for the transport offlammable and non-flammable, water hazar-dous substances.

The installation and laying of the construc-tion elements is done by specialist firmscertified acc. to 19 l WHG, TRbF 180/280Nr. 1.7 who can prove their qualifications inprocess and welding techniques.

The annular gap between the inner and secon-dary containment pipes is used as a surveillan-ce space for a leak detector, which carries outpermanent and complete leak monitoring. In theevent of a spillage an optical and acoustic a-larm is given and, where required, further

transport of the medium is interrupted.

The leak detector regulates the monitoringpressure in the surveillance space of the sa-fety piping and registers any changes in pres-sure, even in the case of minimal spillages,both in the inner and secondary containmentpipes.

Additional functions when an alarm is given,such as passing on the alarm signal, switchingoff pumps or closing down magnetic valves,bring additional operational safety.

There are two monitoring systems:

leak monitoring on the

1. Vacuum principleType: VL-HFw2

2. Positive pressure principle (inert gas)Type: D-FFL 10

Besides increasing operating safety, the use of aleak detector brings considerable economic ad-vantages:

1. The entire system can be checked simply atany time without interrupting operations.

2. Requirements such as e.g. pressure-/volumemeasurements, pressure tests or inspectionsof the piping route become unnecessary.

The construction elements, which are assembledat our works, include all necessary fittings for theproject (such as e.g. elbow, T-piece, wallthrough-connection etc.), including the completeouter corrosion-proofing for underground pipingaccording to the requirements of DIN 30672.

The type of material used for the outer pipe andfor the inner medium pipe depends on the ex-pected mechanical, thermic and chemical stresslevels as well as on the currently valid building re-gulations.

Conventional project planning for double-walledpiping systems, especially with large pipe dimen-sions for the transport of flammable, environen-tally hazardous media makes stringent demandson the technical standards of a design, as well ason the manufacturer's know-how in fire and exp-losion prevention and the protection of bodies ofwater.

Years of experience in planning and implementingprojects using steel-cased piping in the field ofdistrict heating systems and FLEXWELL-safetypiping in industrial plants, the petrochemical sec-tor and fuel depot construction mean that we areperfectly capable of meeting these requirements .


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BRUGG Piping systeme GmbHAdolf-Oesterheld-Str. 31D-31515 WunstorfTel. (05031) 170-0Fax (05031) 170-170

STAMANT-Safety piping

Systems description

SMR

1.01.02

09/99

Type approvalThe construction design of STAMANT safetypiping with leak monitoring is approved underthe designation

72/PTB Nr. III B/S 1236

and is manufactured and used in projects ac-cording to the description in the approval, aswell as according to the regulations of theTRbF 131 T.1 / TRbF 231 T.1.

The system is subject to the requirements of 4 Par.1 VbF, 11. GSGV and of 19 g WHGand the requirements of the various Germanfederal states under the VAwS.

Principles of testing and evaluation used inthe leak detector

(Definition of the surveillance space, the leakdetector with connecting cables and the leak

detection medium acc. to TRbF 503)

Regulation concerning flammableliquids VbF -

Technical rules for flammable liquids -TRbF-

TRbF 131/231 (Teil 1)Piping on the factory premises

TRbF 502Guideline / Construction and testing prin-ciples for leak detectors for double-walled

piping

Water conservation law -WHG-

Regulation concerning installations handlingwater hazardous substances-VAwS-and their appropriate regulations-VVAwS-

Tests

according to the "Technical description for typeapproval and the construction and testing prin-ciples acc. to TRbF.

Material, construction and pressure tests

We carry out the necessary material, constructi-on and pressure tests together with the compe-tetent official experts during manufacture in ourfactory.

The final tests of the piping connections on siteare also done by the official expert supported bythe internal expert from the specialist firm.

Acceptance test

The function test and operational start-up of theleak monitoring system is carried out according tothe description in the approval documents of thespecific leak detector used.

Proof of qualifications

Besides our experience, the following proof ofqualifications guarantees that your orders will becarried out professionally and to high quality stan-dards:

Specialist firm acc. to 19 WHG

Specialist firm acc. to TRbF 180 Nr. 1.7

Specialist firm acc. to TRbF 503

Procedures test acc. to

AD - Merkblatt HP 2/1

Welder test acc. to

AD - Merkblatt HP 3

Specialist firm for the manufacture and

installation of piping acc. to 3 Par. 9 Druck-behV acc. to TRR 100"Regulations for the manufacture of pipingmade ofmetallic materials


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STAMANT Safety Piping

Technical project description

SMR

1.01.05

09/99

Technical DescriptionLeak detector

( Safety piping and leak monitoring )

approved for the transport of water hazardous (flammable and non-flammable) media

acc. to VbF i.Vm. of the 11. GSGV, WHG, VAwS

Approved under: PTB Nr.: III B/S 1236 7. supplement dated 21.07.1999

Safety piping

as a double-walled steel and piping construction with surveillance space as part of a leak

detection system.Type: BRUGG STAMANT SAFETY PIPING

Leak monitoring (acc. to TRbF 502)

Positive pressure leak detector: D-FFL 10 08/PTB Nr.: III B/S 2254

Vacuum leak detector: VL-HFw2 08/PTB Nr.: III B/S 1237

Manufacturer

BRUGG-Rohrsysteme GmbH

Installation / layingby authorized specialist firms certified acc. to 19 l WHG and TRbF 180/280 Nr. 1.7

Applications

Underground or above-ground piping for the transport of...

Transport medium

Water hazardous [flammable (AI, AII, AIII + B) and non-flammable] media

Dimensions

Outer pipe DN 32 to DN 900Inner pipe DN 15 to DN 800

Operating conditions:

operating pressure in inner pipe: up to max. 16 bar positive pressure leak monitoring

up to max. 20 bar vacuum leak monitoring

Calculated pressure[PN]: acc. to TRbF 131/231 Nr. 3.23 / 3.32

Monitoring pressure: According to the description in the approval documents

Testing pressure

Inner pipe: 1.3 times the operating pressure in the inner pipe, at least 5 bar

Surveillance space: 1.3 times the monitoring pressure, at least 5 bar


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SMR

1.01.06

09/99

Materials specification

Inner pipe Seamless acc. to DIN 2448/2462, welded acc. to DIN 2458/2463technical conditions of delivery:

DIN: 1626, 1629, 1630, 17172, 17175, 17440

Acceptance test certificate acc. to DIN EN 10204 -3.1.B-

Outer pipe Welded acc. to DIN 2458/2463, seamless acc. to DIN 2448/2462technical conditions of delivery:

DIN: 1626, 1629, 1630, 17172, 17175, 17440...With external PE corrosion-proofing jacket acc. to DIN 30670 or DIN 30671.

Works certificate acc. to DIN EN 10204 -2.2- orAcceptance test certificate acc. to DIN EN 10204 -3.1.B-

IP elbow Pipe elbow DIN 2605Works certificate acc. to DIN EN 10204 -3.1.B.-as per description in the approval documents (see also Worksheet SMR

5.03.01/02)

OP elbow Pipe elbow, radius according to the inner pipe curvaturewith appropriate material specification outer pipe

DIN 2605 or in segments

PE Corrosion-proofing jacket acc. to DIN 30672.

as per description in the approval documents (see also Worksheet SMR

5.03.01/02)

T-branch consisting of:outer pipe and inner pipe branch

T-branch acc. to DIN 2615, 2618 or Weldolet

as per description in the approval documents (see also Worksheet SMR 5.04.01 5.04.05)

End seal provides a pressure and vacuum-tight seal of the annular gap between outer andinner pipe, weldedDurchfhrung of the inner pipe, incl. the connection for the leak detector.


5.14.01/02/03).

Bearings SpacersThe inner pipe is carried on axial bearings which guarantees the openness of the

surveillance space.


5.10.01/02)


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SMR

1.01.07

09/99

Materials specification

Leak

monitoring

The annular gap between the inner and outer pipe serves as a surveillance

space.Monitoring of the pipe is done either on the positive pressure or vacuum

principle, adapted to the actual operating pressure of the inner pipe, by means of

an approved leak detector.

Flammable liquids Classes AI, AII, AIII and B

Positive pressure leak detector D-FFL 10 (08/PTB Nr. III B/S 2254),

Flammable liquids (AIII) and non-flammable liquidsVacuum leak detector VL-HFw2 (PTB Nr. III B/S 1237)

as part of a leak monitoring system for double-walled piping.

as per description in the approval documents (see also Worksheet LDS 6.11.05

6.25.02)


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STAMANT-Safety Pipe

Steel cased pipe elbows

SMR

06.98

5.03.01

1. Elbows with equal radii

Carrier and casing pipework elbow according DIN

2605, with equal radii (Fehler! Verweisquelle

konnte nicht gefunden werden.)

2. Elbow with larger elbow radius for car-

rier pipe

Carrier and casing pipework elbow according DIN2605, with larger elbow radius for carrier pipework

(Fehler! Verweisquelle konnte nicht gefunden

werden.).

3. Elbow with shorter elbow radius for car-

rier pipe

Carrier and casing pipework elbow according DIN

2605, with shorter elbow radius for carrier pipework

(Fig. 3). Fig. 1: Elbow with equal elbow radii for carrierand casing pipework

Fig. 2 Elbow with larger elbow radius for carrierpipe

Fig. 3 Elbow with shorter elbow radius for carrierpipe


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STAMANT-Safety Pipe

Segemented elbows

SMR

06.98

5.03.02

1. Elbow with 1 segment

Carrier pipework elbow according DIN 2605,

Casing pipework elbow with 1 segment, made from

the same pipework as casing pipe. (Fehler! Ver-

weisquelle konnte nicht gefunden werden.)

2. Elbow with 2 or more segments

Carrier pipework elbow according DIN 2605, Casing pipework elbow with at least 2 segments,

made from the same pipework as casing pipe.

(Fehler! Verweisquelle konnte nicht gefunden

werden.).

Fig. 1: Elbow for carrier pipe with 1 segment

Fig. 2: Elbow for carrier pipe with at least 2 seg-

ments


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STAMANT-Safety Pipe

Doublewalled T-piece

SMR

06.98

5.04.01

1. T-piece

T-piece according DIN 2615, for carrier and casing

steel piping (Fig. 1)

2. T-piece with saddle pieces

T-pieces with saddle pieces according DIN 2618 for

carrier and casing steel piping (Fig. 2.)

carrier pipework: saddle piece / long version

casing pipework: saddle piece / short version

3. T-piece with weldolet and saddle piece

See Fehler! Verweisquelle konnte nicht ge-

funden werden.

carrier pipework: weldolet

casing pipework saddle piece / short versionaccording DIN 2618

Fig. 1 : T-piece according DIN 2615

Fig. 2 : T-piece with saddle pieces

Fig. 3 T-piece with weldolet and saddle piece


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Leak Detection Systems

01.02

LDS

S

ubjecttotechnicalmodifications

6.01.01Leak Detectionfor FLEXWELL Safety Pipe

System Description

Leak monitoring

FLEXWELL safety piping is permanently monitoredusing pneumatic leak detection equipment/ leakdetectors. These regulate the monitoring pressure inthe surveillance space and register any changes ofpressure which may occur.

The surveillance space is filled with the leak detectionmedium (an inert gas) and prevents uncontrolledspillages of the transported product when leaksoccur. The surveillance space must be so constructed

that the functioning and operative security of theleak detection system (the leak detector) is assuredat all times when the leak monitoring system isconnected.

If the pipe is damaged the alarm is emitted byacoustic and optical signals.

Definition of leak detection equipment/leak detectorLeak detection equipment/leak detector accordingto the currently valid German regulations refers to adevice which automatically and under all operating

conditions gives warning of leaks in the walls ofdouble-walled piping in which water pollutant,hazardous, (flammable and non-flammable) fluidsare transported.

The term leak detection equipment/leak detectorincludes all the equipment necessary for thedetection of leaks.

The main components are:the leak detector/leak detection equipment (LAZ)the connection between the surveillance space (UR)and leak detector (LAZ)double-walled pipingthe surveillance space (UR)a leak detection medium

The use of this system complies with the moststringent European safety standards (Class 1).

Systems of this class give warning of a leak above orbelow the fluid level in a double-walled protectivesystem. They are constructed on the principles ofabsolute safety and ensure that spillages of productsinto the environment cannot occur.

Leak detection equipment/leak detector (LAZ)There are two types of differential pressure leakdetection equipment to detect leaks in double-walled piping:- Leak detection by vacuum- Leak detection by pressurized inert gas

FLEXWELL Safety Pipe with a vacuum leak detector:Worksheets LDS 6.03.01 6.03...

FLEXWELL Safety Pipe with a positive-pressure leakdetector: Worksheet LDS 6.07.01 - 6.07....

LDS 6.14.01 - 6.14...LDS 6.15.01 - 6.15....

FLEXWELLSafety Pipe withvacuum leakmonitoring

FLEXWELLSafety Pipe withpressured gasleak monitoring


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01.02

LDS

S



System Description

Approval/suitabilityAll leak detection equipment/leak detectors in usemust comply with the basic criteria laid down forconstruction and testing standards. All suchpreconditions which could have a bearing on thefunctional and operative safety of the system musttherefore be observed.

It therefore goes without saying that the conditionsfor operative use have been tested by the competentauthorities and clearly defined and set down in thedocuments of approval issued by them.

FLEXWELL Safety Pipe with leak monitoring is anapproved leak detection equipment/leak detectorsystem.

The advantages of the systemUsing double-walled FLEXWELL Safety Pipe with leakmonitoring offers, besides a high degree of operativesafety, substantial economic advantages:

- the entire system can be easily and simplymonitored at any time without interruptingoperations

- requirements such as e.g. pressure/volumemeasurements, pressure tests or route surveyscan be dispensed with.


12/15


01.02

LDS

S


6.07.01Leak Detection withpressurized leak detector

Type D-FFL 10/...

The pressurized gas leak detector Type D-FFL 10/...is approved as a leak detection device suitable formonitoring FLEXWELL Safety Pipes for the transportof :

- water pollutant, hazardous flammable liquids ofthe Classes AI, AII, AIII and B.

- water pollutant, hazardous non-flammable liquids.

Principles of functioningThe necessary pressure in the surveillance space of

the FLEXWELL Safety Pipe depends on the actualoperating pressure within the primary pipe. It is setand maintained:

- by topping upfrom a stationary nitrogen pressurereservoir which is permanently connected with thesurveillance spaceThis mode is hereafter referred to asOperating mode S

- from a mobile pressure reservoir which is onlyconnected when the line is put into operation or

during a function test.This mode is hereafter referred to asOperating mode M

Operating mode S or M may be selected by anoperating mode switch installed on the outside ofthe leak detector.

In both operating modes the surveillance space isconnected with the leak detector bycopper tubing leads. Surveillance pressure built up ismeasured by a pressure sensor. If due to a leak thepressure drops to the value set for ALARM ON, anoptical and acoustic alarm will be triggered

While in operating mode S the monitoring pressureis regulated and maintained after putting the systeminto operation by topping up from a stationarynitrogen pressure tank which is permanentlyconnected with the surveillance space and equippedwith a pressure reducing valve, operation in mode Mdiffers.

In operating mode M the monitoring pressure (TOP-UP OFF) is set just once when the system is put intooperation by a pressure tank which is not perma-

nently connected. No further pressure-regulatedtopping up is used. Any drop in pressure to the pointat which the ALARM is triggered, must therefore beremedied by manually connecting the pressure tankagain until the value set as TOP-UP OFF has beenreached ( for switching values see Table 1).

Pressurized gas leak monitoring for horizontal and verticalinstallation of and double and multiple-pipe systems

Pressurized gas leak detection


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01.02

LDS

S



System Description

Leak monitoring

FLEXWELL safety piping is permanently monitoredusing pneumatic leak detection equipment/ leakdetectors. These regulate the monitoring pressure inthe surveillance space and register any changes ofpressure which may occur.

The surveillance space is filled with the leak detectionmedium (an inert gas) and prevents uncontrolledspillages of the transported product when leaksoccur. The surveillance space must be so constructed

that the functioning and operative security of theleak detection system (the leak detector) is assuredat all times when the leak monitoring system isconnected.

If the pipe is damaged the alarm is emitted byacoustic and optical signals.

Definition of leak detection equipment/leak detectorLeak detection equipment/leak detector accordingto the currently valid German regulations refers to adevice which automatically and under all operating

conditions gives warning of leaks in the walls ofdouble-walled piping in which water pollutant,hazardous, (flammable and non-flammable) fluidsare transported.

The term leak detection equipment/leak detectorincludes all the equipment necessary for thedetection of leaks.

The main components are:the leak detector/leak detection equipment (LAZ)the connection between the surveillance space (UR)and leak detector (LAZ)double-walled pipingthe surveillance space (UR)a leak detection medium

The use of this system complies with the moststringent European safety standards (Class 1).

Systems of this class give warning of a leak above orbelow the fluid level in a double-walled protectivesystem. They are constructed on the principles ofabsolute safety and ensure that spillages of productsinto the environment cannot occur.

Leak detection equipment/leak detector (LAZ)There are two types of differential pressure leakdetection equipment to detect leaks in double-walled piping:- Leak detection by vacuum- Leak detection by pressurized inert gas

FLEXWELL Safety Pipe with a vacuum leak detector:Worksheets LDS 6.03.01 6.03...

FLEXWELL Safety Pipe with a positive-pressure leakdetector: Worksheet LDS 6.07.01 - 6.07....

LDS 6.14.01 - 6.14...LDS 6.15.01 - 6.15....

FLEXWELLSafety Pipe withvacuum leakmonitoring

FLEXWELLSafety Pipe withpressured gasleak monitoring


14/15


01.02

LDS

S



System Description

Approval/suitabilityAll leak detection equipment/leak detectors in usemust comply with the basic criteria laid down forconstruction and testing standards. All suchpreconditions which could have a bearing on thefunctional and operative safety of the system musttherefore be observed.

It therefore goes without saying that the conditionsfor operative use have been tested by the competentauthorities and clearly defined and set down in thedocuments of approval issued by them.

FLEXWELL Safety Pipe with leak monitoring is anapproved leak detection equipment/leak detectorsystem.

The advantages of the systemUsing double-walled FLEXWELL Safety Pipe with leakmonitoring offers, besides a high degree of operativesafety, substantial economic advantages:

- the entire system can be easily and simplymonitored at any time without interruptingoperations

- requirements such as e.g. pressure/volumemeasurements, pressure tests or route surveyscan be dispensed with.


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01.02

LDS

S


6.03.01FLEXWELL Safety PipeLeak Detection with the

vacuum leak detector Type VL-HFw2

The leak detector Type VL-HFw2 working on thevacuum principle is suitable for monitoringFLEXWELL Safety Pipes for the transport of:- flammable, water pollutant substances of the

Class AIII ( e.g. heating oil, diesel fuel)- non-flammable, water pollutant substances.

Principles of functioningThe vacuum pump installed inside the leak detectorlowers the air pressure within the surveillance spacea set value below atmospheric pressure. By moni-toring this partial vacuum, leaks in the walls of thepiping are automatically detected.

In the event of a drop in the partial vacuum (a rise in

pressure) due to a leak below the lower value of themonitoring level of partial vacuum, the optical andacoustic alarm is triggered.

Minimal, unavoidable pressure decay (not real leaks)is regulated automatically without triggering analarm if pressure fluctuates between the set upperand lower limits of the monitoring vacuum pressure.Eventually necessary evacuation is carried out by thevacuum pump inside the leak detector subsequently.

Switching values of the leak detectorpump ,,off: 520 20 mbar*

pump ,,on: 460 20 mbar*alarm ,,on: 420 10 mbar** below atmospheric pressure

In every case in which the alarm is triggered, thevacuum pump is automatically switched off. It canonly be switched on again by flipping the toggleswitch mounted on the outside of the leak detectorfor this purpose.

Technical basisDue to the laws of physics the use of the leak detec-tion device is limited to defined maximum lengths ofpipe. These depend on the diameter of the FLEXWELL

Safety Pipe used and the type of installation.Types of installations and maximum lengths of pipesare set out in Worksheets LDS 6.03.11 - 6.03.16

Devices approved for use up to a max. operatingpressure in the operating pipe of :Type VL-HFw2 up to max. 4 bar*Worksheets LDS 6.03. ...Type VL-HFw2/20 up to max. 20 bar*Worksheets LDS 6.03 ...* above atmospheric pressure

Notes on the installation of the leak detector

The leak detector may not be installed in hazardousareas.Wherever possible, the leak detector should beinstalled in an enclosed, dry space.If it is installed outside, the leak detector should beenclosed in a weatherproof protective housing.

Installation/Commencement of operations/Operation/Function testingDetailed descriptions are documented in theapproval certification of the leak detector TypeVL-HFw2 and the worksheets for FLEXWELL SafetyPiping.

The conditions set out in the approval certificationfor FLEXWELL Safety Piping and the leak detectorType VL-HFw2 must be complied with.

Vacuum leakdetection,horizontal pipe

installation,single-line systemsee LDS 6.03.11

Leak detector inprotective housing

Vacuum leak detection

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STAMANT Sys Descr

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