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Flameless Explosion Venting Device

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FLEX

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35

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INDEX

INTRODUCTION ............................................................................................................................................... 4

IDENTIFICATION OF THE OPERATING AND MAINTENANCE INSTRUCTIONS ........................................ 4

FLEX CLASSIFICATION ........................................................................................................................... 4

THE PURPOSE OF THE OPERATING AND MAINTENANCE INSTRUCTIONS ............................................ 5

WARRANTY CONDITIONS ..................................................................................................................... 5

STORAGE .............................................................................................................................................. 6

TERMS AND DEFINITIONS .................................................................................................................... 6

GENERAL SAFETY INSTRUCTIONS .................................................................................................................... 7

PRODUCT DESCRIPTION .................................................................................................................................. 8

OPERATING PRINCIPLE ......................................................................................................................... 8

TECHNICAL SPECIFICATIONS ................................................................................................................ 9

THE PARAMETERS ENSURING THE SAFE USE OF FLEX ACCORDING TO THE ATEX CERTIFICATE ....... 14

SAFETY ZONE ...................................................................................................................................... 14

FORMATION OF OVERPRESSURE IN SURROUNDING VOLUME ACCORDING TO EN 16009 ............... 16

THE INSTALLATION TO THE PROTECTED EQUIPMENT .................................................................................. 17

THE INSPECTION OF THE FLEX BEFORE INSTALLATION ...................................................................... 17

GENERAL INSTALLATION GUIDELINES ................................................................................................ 17

THE INSTALLATION TO THE PROTECTED EQUIPMENT ....................................................................... 20

MEMBRANE OPENING SIGNALLING DEVICE ................................................................................................. 23

ELECTRICAL CONNECTION .................................................................................................................. 23

PROHIBITED ACTIVITIES ..................................................................................................................... 24

OPERATORS, MAINTENANCE, AND STAFF TRAINING .................................................................................... 25

SERVICE AND MAINTENANCE........................................................................................................................ 27

SERVICE .............................................................................................................................................. 27

FLEX SERVICE AFTER EXPLOSION OR WHEN THE MEMBRANE IS DAMAGED .................................... 28

SPARE PART LIST............................................................................................................................................ 34

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Содержание FLEX C Series

Страница 1: ...Flameless Explosion Venting Device FLEX Designer Technical Manager Ing Petr Grygar Ing Tomáš Wyka 10 5 2016 10 5 2016 1 ...

Страница 2: ...SURING THE SAFE USE OF FLEX ACCORDING TO THE ATEX CERTIFICATE 14 3 4 SAFETY ZONE 14 3 5 FORMATION OF OVERPRESSURE IN SURROUNDING VOLUME ACCORDING TO EN 16009 16 4 THE INSTALLATION TO THE PROTECTED EQUIPMENT 17 4 1 THE INSPECTION OF THE FLEX BEFORE INSTALLATION 17 4 2 GENERAL INSTALLATION GUIDELINES 17 4 3 THE INSTALLATION TO THE PROTECTED EQUIPMENT 20 5 MEMBRANE OPENING SIGNALLING DEVICE 23 5 1 EL...

Страница 3: ...Flameless Explosion Venting Device FLEX 3 35 1 9 ANNEXES 35 ...

Страница 4: ...shall be considered decisive The following documents concerning FLEX are also supplied with this manual Delivery note EU Declaration of Conformity under 2014 34 EU FLEX control sheet Operation Log Book The following can be supplied on request Drawing of the connecting flanges The data sheet of the intrinsically safe relay if included in the delivery 1 2 FLEX CLASSIFICATION FLEX is designed in acco...

Страница 5: ... chapter 4 concerning the proper installation because FLEX is the device whose improper installation operation and maintenance may endanger the human life FLEX can be installed operated serviced and repaired only by an authorized person The authorized person must be trained and certified either by the company RSBP spol s r o or by its authorized representative The certification must be renewed eve...

Страница 6: ...ructions they can be re ordered from the manufacturer 1 6 TERMS AND DEFINITIONS The flameless explosion venting device FLEX consists of the equipment for explosion venting membrane and the device for the absorption of the released energy FLEX which spreads during the dust explosion in a confined space FLEX prevents the transmission of the explosion pressure and flame through the release opening of...

Страница 7: ...ect condition The recommended inspection and maintenance intervals must be observed and the required service or repairs performed by the certified person must be provided for The activities performed with the product must all be recorded in the Operation Log Vook which is included in the delivery so that the history of these activities can be traced at any time ...

Страница 8: ... space FLEX prevents the transmission of the explosion pressure and flame through the release opening of the membrane thereby protecting people and equipment in its vicinity FLEX must be used in the event of the membrane installation inside the building where the protected equipment is located In the event of explosion FLEX captures the explosion energy flame pressure coming from the open membrane...

Страница 9: ...ASIC DIMENSIONS OF ROUND FLEX DEVICES TYPE C FLEX C Table No 2 Basic Dimensions of the Round FLEX Devices C Series TYPE A mm B mm C mm D mm E mm F mm G mm d the diameter of the opening for bolts mm n the number of openings for bolts pieces Weight kg FLEX C1 315 580 485 320 350 5 375 11 12 30 FLEX C2 445 795 635 450 486 5 525 13 12 71 FLEX C3 505 990 705 510 550 6 585 13 20 104 FLEX C4 625 1640 825...

Страница 10: ...Flameless Explosion Venting Device FLEX 10 35 1 Fig 2 The Drawing of the Round FLEX Devices C1 C5 ...

Страница 11: ...r bolts pieces Weight kg FLEX R1 390 710 635 410 14 18 40 FLEX R2 540 890 900 580 14 22 74 FLEX R3 666 1000 1130 735 14 34 109 FLEX R4 996 1198 1660 1070 14 42 215 Fig 3 The Drawing of the Rectangular FLEX Pie R1 R4 Table No 4 Basic Dimensions of the Rectangular FLEX Devices F Series TYPE A mm B mm C mm D mm d the diameter of the opening for bolts mm n the number of openings for bolts pieces Weigh...

Страница 12: ...etween the safe and the hazardous zones Zone 20 The intrinsically safe relay requires power supply of 230V 50 Hz protection with the circuit breaker of at least 1 A tripping characteristics B or C The intrinsically safe relay contains a throw over contact where the operational state of the membrane closed opened is signalled Fig 5 Intrinsically Safe Relay The intrinsically safe relay can be suppli...

Страница 13: ...rature between 40 C to 80 C all the time For the application with special requirements for the features of the gasket we can supply the gasket made of the material that meets the requirements In the event that the operator decides to use his her own gasket neither the supplier nor the manufacturer is responsible for the problems related to the its inappropriate selection c The protective bag is in...

Страница 14: ...rther safe use is ensured 3 4 SAFETY ZONE The area in front of the free space of the flame filter at a distance of 1 2 5 m from FLEX must be defined as the safety zone The specific value is given in the Technical Data Sheet supplied with each FLEX device No people can access the zone because there is a danger of noise smoke and water steam associated with the explosion It is recommended that no eq...

Страница 15: ...service or device maintenance However only provided that the entire technology has been shut down the explosive atmosphere has been vented and if there is no explosion risk inside the protected technology Fig No 7 Safety Zone for the Round FLEX Devices Fig No 8 Safety Zone for the Rectangular FLEX Devices ...

Страница 16: ...e volume of protected vessel large enough to avoid a damage of this room Generally is necessary to consider a reinforcement of the room if the room is 300x smaller than protected vessel This is valid for buildings and rooms with common constructional strength 0 01 bar This is described within following formula V0 V α p0 p Where p0 is the ambient pressure p is the maximum pressure rise in the room ...

Страница 17: ... GUIDELINES A Only lifting eyes can be used for the transport and handling FLEX The lifting eyes of the FLEX devices of the C and F series are firmly welded to the FLEX structure as to the FLEX devices of the R series they are bolted between the FLEX body and its lid B The flange of the vessel must have the same connecting dimensions as the FLEX flange and it must be located if possible on the low...

Страница 18: ...st be fixed in the way that the load from the FLEX weight is distributed evenly between both the ends of the device The end of FLEX must be hung by the welded eyes on the FLEX cover lid using a suitable structure An example of such suspension is shown in fig 10 The specific fastening method must be discussed with the manufacturer or the supplier The dimension of the structure as well as all suspen...

Страница 19: ...ng FLEX with the protected device is connected The contact faces for the placement of the earth element must be cleaned appropriately and their coating must be removed The fasteners used for attaching the grounding element to the FLEX earth bolt must be galvanized Specifically the nut M8 ISO 4032 property class 8 and serrated lock washer DIN 6798 and plain washer ISO 7090 both of them with the siz...

Страница 20: ...30 M8 8 15 C2 12 M10 x 35 M10 10 21 C3 20 M10 x 35 M10 10 21 C4 20 M10 x 40 M10 10 21 C5 24 M10 x 40 M10 10 21 4 3 THE INSTALLATION TO THE PROTECTED EQUIPMENT The installation of the FLEX device can be summarized in the following steps 1 Removing the transport bolts ISO 10642 which together with the sealant hold the membrane firmly on the FLEX body 2 Cleaning and degreasing of the flange contact f...

Страница 21: ...r end of the grounding element see chapter 4 2 I 6 For the FLEX device mentioned under 4 the suspension of the overhanging end of FLEX on the prepared structure see chapter 4 2 E 7 Grounding of the flameless device see the previous chapter I and fig 11 The figures 12 a 13 show the exploded view of the entire assembly system Fig 12 The Exploded View of the Rectangular FLEX 1 FLEX 2 flange gasket 3 ...

Страница 22: ...Flameless Explosion Venting Device FLEX 22 35 1 Fig 13 The Exploded View of the Round FLEX 1 FLEX 2 flange gasket 3 fasteners 4 protected technology ...

Страница 23: ...associated with the FLEX closing sensor should be performed by the company RSBP spol s r o or by its authorized representative The intrinsically safe relay should be installed into a plastic box distribution boards switchboards and other similar devices in the proximity of FLEX or beyond its proximity control room switch room 5 1 ELECTRICAL CONNECTION The electrical connection should be made accor...

Страница 24: ... components damage the membrane and all its components mechanically damage the electric cabling power signal for membrane opening All the activities listed above installation dismantling maintenance service operation damage defects should be demonstrably recorded in the Operation Log Book for the technological unit indicating the date name and signature of the worker who performed the intervention...

Страница 25: ...d why Last but not least the name of the worker who performed the operation and his her signature must be indicated The FLEX maintenance consists in the following steps 1 Check for any mechanical damage to FLEX 2 Check of FLEX cleanliness The flame filter meshes must be maintained in a perfectly clean condition no dust or other dirt may stick on the surface or inside the FLEX device Therefore the ...

Страница 26: ...nger of accidental or ordered movement within the area of FLEX and their instruction on this danger on protection once a year including the newly hired staff The user is obliged to include the instructions from this chapter to his her operational and safety rules All activities performed with the product must be recorded in the Operation Log Book so that the history of these tasks can be traced at...

Страница 27: ...X is fitted with a protective bag the bag must also be cleaned from dust and dirt Extensive bag cleaning should be ensured by the operator washing of the bag 4 The opening signalling device the inspection of the supply cable signalling operability and the settings 5 For the rectangular FLEX devices of the F and R series the membrane integrity can be checked through the inspection hole After the in...

Страница 28: ...ool down to the acceptable level so that it is possible to work in the vicinity of FLEX as well as with the actual device 3 In the event of explosion FLEX must be dismounted from the equipment 4 After the dismounting check whether no visible damage and plastic deformation to the FLEX body and lid has occurred and whether its integrity is maintained If not the further use of FLEX is prohibited 5 Th...

Страница 29: ... to work in the vicinity of FLEX as well as with the actual device 3 In the event of explosion FLEX must be dismounted from the equipment 4 After the dismounting check whether no visible plastic deformation to the FLEX body has occurred and whether its integrity is maintained If not the further use of FLEX is prohibited 5 Then remove the flame filter from FLEX the filter is attached to the FLEX bo...

Страница 30: ...ble plastic deformation to the FLEX body or the lid has occurred and whether its integrity is maintained If not the further use of FLEX is prohibited 5 Then the entire FLEX must be disassembled Remove the top lid and pull the flame filter out under the lid as well as the actual cylindrical flame flited there are two cylindrical flame filters in the FLEX devices C4 and C5 Remove the used membrane D...

Страница 31: ...ed tightly against the low nuts which were adjusted into the correct position by the manufacturer Do not tamper with the low nuts The tightening of the upper nuts should be performed using the cross method after tightening check each nut again 9 A new membrane a spare part from the supplier can be sealed from the underside to this prepared FLEX using the silicone sealant suitable for this applicat...

Страница 32: ...15 Exploded View 1 Body 2 Flame filter 3 Upper lid 4 ALSIFLEX 1430 sealing thickness 2 between the FLEX body and the flame filter 5 ALSIFLEX 1430 sealing thickness 2 between the flame filter and the FLEX upper lid 6 Membrane 7 Flange gasket 8 Fasteners 9 Protected technology 10 ALSIFLEX 1430 sealing ring thickness 10 ...

Страница 33: ... and check whether FLEX was not polluted during this process pay particular attention to the meshes in its flame filter If so remove the dirt If it is not possible the flame filter s must also be replaced proceed according to chapter 7 2 1 as though there was an explosion 3 A new membrane a spare part from the supplier can be sealed from the bottom using suitable silicone sealant to this prepared ...

Страница 34: ...each explosion or if it is strongly contaminated Each FLEX has its unique size of the flame filter therefore for instance the filter from FLEX R2 is fit only for FLEX R2 but not for other FLEX devices therefore note the filter type while ordering spare flame filters c The inspection hole lid gasket is used for the sealing of the inspection hole in the rectangular FLEX devices series F and R If dam...

Страница 35: ...Flameless Explosion Venting Device FLEX 35 35 1 9 ANNEXES List of Annexes FLEX signaling connection dr nr 4 001 1069 page 1 FLEX signalling connection dr nr 4 001 1069 page 2 ...

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