TECHNICAL GUIDE. EBP from 0,07 to 100 bars

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1 TECHNICAL GUIDE GRAPHILOR discs have numerous advantages : Very broad spectrum of corrosion resistance Use over a wide range of temperature (-50 C /+200 C), thermal isolation device for high temperatures Standard sizes for ISO PN and ASA couplings and flanges No ageing, ensuring a stable bursting over time Available from DN 25 to DN 600 Available from stock for the most widely used DNs and s from 0,07 to 100 bars The main areas of use of GRAPHILOR discs are : Chemical Petrochemical Pharmaceutical Aeronautics Plastics Electrical engineering For the protection of : Reactors Tanks Vats Reservoirs Circuit breakers

2 Mersen, specialist in corrosion resistant materials Mersen group is recognized as a leader in the design and manufacture of corrosion resistant equipment MERSEN offers : Graphite equipment : heat exchangers, columns Reactive metals equipment : heat exchangers, reactors, tanks ARMYLOR PTFE/PFA-coated steel equipment : piping,columns, tanks Experience combined with continous improvement and development of processes and materials allow Mersen to offer a range of GRAPHILOR bursting discs best suited to your operating conditions. A GRAPHILOR bursting disc is a safety component intended to protect against accidental over or vacuum by instanteneous opening at a pre-detered bursting. GRAPHILOR GRAPHILOR 3 is a unique material: insensitive to thermal shocks, very high resistance to corrosion, chemically inert, reliable and economic. Depending on the series, rupture discs are made of impregnated or unimpregnated GRAPHILOR 3, or GRAPHILOR N which is composed of different varieties of isostatically molded graphite. Quality system Pagny-sur-Moselle plant has ISO certification for environmental respect, ISO 9001 for quality assurance, OHSAS for Occupational Safety and Health, and the products are manufactured in conformity with European Directive DESP 97/23 CE. The TÜV has authorized our Quality Control department to issue product inspection certificates. For some series, we can supply certificates according to British standard BS 2915 (1990). All our products are accepted by our Quality Control department, any other reception will be invoiced for an extra after it has been precisely defined. Example inspection: Stomwezen, Vinçolte, Ispesl. 2

3 Rupture plug Single-pice discs Discs with removable membranes A complete range of rupture discs The norms The discs are designed in accordance with Standard BS 2915 and the tests are carried out in accordance with Directive EN ISO GRAPHILOR rupture discs and safety accessories are produced in conformity with European Directive 97/23/CE, category IV, module B and module D for group I gases. As a manufacturer, the EN ISO directive requires Mersen to take responsibility for the design of our discs. We therefore ask our customers the following specific process information: Operating temperature Operating Maximum operating Noal diameter /PN Fluid, composition ( in particular for a solvent) In addition, we may also request the following information: Tolerance on Operation ina vacuum Series Fluorinated coating Other, specific applications Types of products Series Areas of uses Materials used Options 1 2 Low Medium Graphilor, stainless steel (support) Cork (not supplied) (Support gasket) Graphilor not impregnated ( discs) Expanded graphite (gasket) Graphilor, stainless steel (support) Cork (not supplied) (Support gasket) Graphilor impregnated ( discs) Expanded graphite (gasket) Stainless steel support Rupture detector Thermal insulation device Vacuum netting 3 Medium Medium High Medium Graphilor impregnated (discs) Expanded graphite (gasket) Graphilor not impregnated (discs) Expanded graphite (gasket) Thermal insulation device Vacuum netting for series 4 Rupture detector Spark guard basket 8 Medium Graphilor impregnated (discs) Expanded graphite (gasket) 7 Low flow rate Graphilor impregnated (discs) Expanded graphite (gasket) Brass or stainless steel support The thermal isolation device is available for operation at temperatures higher than 165 C Support in GRAPHILOR Support/gasket in graphite Thermal isolation in carbon fiber 3

4 Thermal isolation device High temperature use. Active diameter d mm inches ½ 2 2 ½ Outer diameter D (mm) Szries Serie Thickness E (mm) Vent internal diameter (%) Average weight Series Serie 5 0,09 0,15 0,22 0,30 0,40 0,77 1,2 1,7 2,7 3,8 5,2 7, ,28 0,50 0,77 1,2 1,2 1,7 3 4,8 6,6 9, Temperature limits of functioning : C in gas phase C in liquid phase Nota : the thermal isolation device allow to maintain the rutpure disc at a temperature of 20 C. The correction of temperature must not be applied. 3

5 Rupture plug Single-piece discs Discs with removable membranes Generalities Choosing a rupture disc The following parameters must be known when selecting a rupture disc: The effective burst (), the difference between the upstream and downstream The operating temperature The imum active diameter defined by the exhaust flow Pressure and vacuum conditions The nature of the material in contact with the rupture disc Types of products Series mm Active diameter inches in bars at 20 C tolerance T range (C) 1 50 to to 24 0,07 to 0,34 25% -50 to to to 24 0,35 to 30 10% -50 to to to 24 0,8 to 40 10% -50 to to to 24 0,35 to 40 10% -50 to to to 24 1,2 to 35 10% -50 to to to 24 0,1 to 35 15% -50 to to to 24 0,08 to 40 15% -50 to ,7 and 19 1/3 and 3/4 1,4 to 80 15% -50 to+165 4

6 Traceability, markings and coding Traceability and marking. On disc supports with removable membranes, a label indicates : The active diameter The number of bolts The tightening torque The direction of bursting The diameter and number of bolts On single-piece membranes and discs, the label indicates : The active diameter The series number The bursting The batch number of the graphite The standard used The number of bolts The tightening torque The direction of bursting The diameter and number of bolts The direction of installation The CE marking A document, available on request, allows you to detere the active diameter of the disc. Coding Each disc has a reference code. This code is composed of 12 alpanumeric characters, as defined below: --/--/---/----- = Disc/Series/Diameter/Pressiure Example disc n = disc /20= Series 2/ 150 = diameter150 / 1000= 10 bars of imum Exemple disque n = disc /40= Series 4/ -50 = diameter 50 / --035= 0.35 bars of imum 5

7 Technical informations Assembly of a rupture discs The first step is to insert the disc or the supports and membrane assembly, with their rings and gaskets, between two pipe flanges The following are general recommendations to ensure correct installations : Use flanges with flat faces in standard sizes. The flanges must be perfectly clean and flat Respect the pipe flange bore indicated for each series Center the gaskets on the discs in order to even distribution of force Do not change the material of the gaskets without consulting the factory Respect the mounting direction of the disc The label must remain visible after installation of the disc Apply recommended torque indicated in the installation manual To prevent the projection of fragments after disc rupture, a protective basket screen may be installed If the expelled gas is flammable or toxic, install an appropriate device allowing for safe evacuation of the gas after disc rupture The operating must not exceed 80% of the Verify the correct installation and seal integrity of the disc at least once a year The installation and commissioning manual supplied with each disk summarizes all the installation and utilization instructions. 6

8 Technical informations Most common examples of assembly Protection of a safety valve Protection against over and negative In series The effective burst of the disc should be more than the opening set for the valve. The safety valve would operate after the bursting of the safety disc. In parallel The effective burst of the disc should be higher than the opening of the valve. The safety disc operates only when the safety valve fails. The upper disc insures the protection against over-. The lower disc insures the protection against negative. 7

9 Rupture discs in GRAPHILOR Series 1 Discs with removable membranes Low use DN 50 to 600 PN DN PN ANSI series Outer diameter D Overall thickness E Vent internal diameter Effective bursting Average weight the membrane The 2 supports Ring and gasket diameter mm Inches bar Lbs mm Mm % Relative bars * Kg Thickness 2 mm ,2 0,34 0,25 0,35 98/ ½ ,2 0,34 0,03 0,45 113/ ,15 0,34 0,04 0,55 128/ ,15 0,34 0,08 0,75 158/ ,07 0,34 0,17 1,20 213/ ,07 0,34 0,32 2,50 273/ ,07 0,34 0,50 5,20 328/ ,07 0,34 0, / ,07 0,34 1, / ,07 0,34 1, / ,07 0,34 2, / ,07 0,34 3, / ,07 0,34 6, /610 8

10 Rupture discs in GRAPHILOR Series 2 Discs with removable membranes Medium use DN 25 to 600 PN DN PN ANSI series Outer diameter D Outer diameter D1 Overall thickness E Vent internal diameter Effective bursting Average weight a b c Ring and gasket diameter mm inches bar Lbs mm Mm Maxi Mini % Relative bars * Kg Epais. 2 mm ,8 30 0,005 0,013 0,1 54/ ½ ,5 20 0,007 0,02 0,15 67/ , ,008 0,04 0,25 76/ ½ , ,012 0,06 0,3 92/ , ,02 10,09 0,45 108/ ,35 8 0,032 0,19 0,8 140/ ,35 6 0,095 0,3 1,30 170/ ,35 6 0,11 0,57 1,7 200/ ,35 4 0,22 1 3,5 260/ ,35 3 0,45 1,8 5,8 315/ ,35 2,5 0,9 2, / ,35 2 1,4 3, / ,35 1,5 2 4, / ,35 1,5 2,7 6, / ,35 1,2 3,5 7, / ,35 1, /610 9

11 Rupture discs in GRAPHILOR Series 3 Single-piece discs Medium use DN 25 to 600 PN DN PN ANSI series Outer diameter D Overall thickness E Effective bursting Average weight The membrane The 2 supports mm Inches bar Lbs mm mm Relative bars * Kg , ,11 0, ½ , ,15 0, ,25 0, ½ , ,30 0, , ,40 0, , ,63 0, , ,85 1, , ,20 1, ,20 8 2,20 3, ,15 6 3,20 4, ,15 4 4, ,10 2,5 5,60 9, ,10 2 6, ,10 1, ,08 1, ,08 1,

12 Rupture discs in GRAPHILOR Series 4 Single-piece discs Medium use DN 25 to 600 PN DN PN ANSI series Outer diameter D Overall thickness E Vent internal diameter Effective bursting Average weight mm inches bar Lbs Mm mm % Relative bars * Kg , ,12 0, ½ , ,17 0, ,28 0, ½ , ,35 0, , ,49 0, , ,83 0, , ,20 1, , ,60 1, ,35 8 3,00 4, ,35 6 4,80 5, ,35 4 6,70 8, ,35 2,5 9, , , ,35 1, ,35 1, ,35 1,

13 Rupture discs in GRAPHILOR Series 5 Single-piece discs High use DN 25 to 600 PN DN PN ANSI series Outer diameter D Overall thickness E Effective bursting Average weight mm inches bar Lbs mm mm Relative bars * Kg ,34 0, ½ ,60 0, ,20 1, ½ ,10 2, ,30 2, ,60 2, * ,20 5, ,10 8, , , , , , , , ,

14 Rupture discs in GRAPHILOR Series 6 Single-piece discs Medium use DN 25 to 600 PN DN PN ANSI series Outer diameter D Effective bursting pressire Average weight mm inches bar Lbs mm Relative bars * Kg ,11 0, ½ ,5 30 0,14 0, ,5 25 0,24 0, ½ ,28 0, , ,36 0, , ,66 0, , ,88 1, ,30 8 1,05 1, ,30 6 1, ,20 5 2,80 3, ,15 3,50 3,80 5, ,15 2 5,00 8, ,10 1, ,10 1, ,10 1, ,10 1,

15 Rupture discs in GRAPHILOR Series 7 Rupture plug Low flow rate use Diameter 12,7 to 19mm Height from 32 to 50 mm Diameter d Diameter D Effective bursting Average weight H Diameter d1 Diameter d2 R h C Gasket thickness diameter 0,4mm Torque loading mm inches mm Relative bars* Kg mm mm mm nm nm nm nm 12,7 1/ , ,5 6,35 ½ ½ 38 1,4 50 0, ,5 12,7 ¾ 9, ,5/

16 B23_1_E Rupture discs in GRAPHILOR Series 8 Single-piece discs with PFA protection Medium use DN 25 to 600 PN bar DN PN ANSI series Outer diameter D Overall thickness E Effective bursting Average weight mm inches bar Lbs mm Mm Relative bars* Kg , ,11 0, ½ , ,15 0, ,25 0, ½ , ,30 0, , ,40 0, , ,63 0, , ,85 1, , ,20 1, ,20 8 2,20 3, ,15 6 3,20 4, ,10 4 4, ,10 2,5 5,60 9, ,10 2 6, ,10 1, ,08 1, ,08 1, Mersen Pagny-sur-Moselle 1 rue Jules Ferry_ Pagny-sur-Moselle Tel. +33 (0)