FOR FLOATING ROOF STORAGE TANK GLOBAL SOLUTIONS

Transcription

1 FOR FLOATING ROOF STORAGE TANK GLOBAL SOLUTIONS

2 Welcome To ATECO Tank Technology and Engineering Services Ltd. ATECO TANK TECHNOLOGY ENGINEERING SERVICES LTD. specialises in floating roof tank seals and drain systems for above ground storage tanks. The Management Team has over 20 years experience of this business and is therefore able to provide impartial advice on the selection of the most suitable sealing system for a customer's needs taking into consideration service and operational requirements, climatic conditions and tank shell distortion. ATECO TANK TECHNOLOGY ENGINEERING SERVICES LTD. is able to offer either complete floating roof seals or just replacement parts for virtually any of the multitude of seal designs that have been introduced over the years. With its own in-house manufacturing facilities ATECO TANK TECHNOLOGY ENGINEERING SERVICES LTD. can offer a speedy turnaround in the event of an emergency situation. The materials used in the seal construction have been proven in service around the world over many years. ATECO TANK TECHNOLOGY ENGINEERING SERVICES LTD. specialise in the provision of seals for older tanks that suffer from tank shell distortion. When required, seal installation can be arranged by the provision of either a complete team of experienced personnel or, if preferred, just a supervisor to assist a local contractor. Through its network of associates ATECO TANK TECHNOLOGY ENGINEERING SERVICES LTD. can provide additional products and services, some of which are listed below : Roof Support Leg Socks Guide Pole Seals Tank Mixers Internal Floating Roofs - Steel or Aluminium Floating Suction Lines and Skimmers Tank Inspection ATECO TANK TECHNOLOGY ENGINEERING SERVICES LTD. operates a quality management system certified to BS:EN ISO 9001:2000 and its products comply with all the relevant international standards.

3 ULTIMATE VAPOUR CONSERVATION VAPOUR CONSERVATION Ateco Tank Ultimate Systems can provide you with a total service in Vapour Conservation. The skills and resources of the ATECO TANK are available For the full range of services from conceptual studies to turnkey contracts for your storage and handling terminal. Changes in Point of Taxation and environmental protection tc. Demand improves techniques. Factor affecting your business. VAPOUR CONSERVATION Custody Transfer. High Labour Costs. Ateco Tank Conservation Ultimate Systems and Cost can Save. provide you with a total service in Vapour Conservation. The skills and resources of the ATECO TANK are available For the full Environmental range of services Protection. from conceptual studies to turnkey contracts for your storage and handling terminal. Safety. Changes in Point of Taxation and environmental protection tc. Demand improves techniques. We Can Help With. Factor affecting your business. Geodesic Dome Roofs. Internal Floating Roofs. Custody Floating Roof Transfer. Seals and Secondary Seals, Double Seals. High Roof Labour Drain Systems Costs. and Equipments. Conservation Floating Roof Accessories and Cost Save. ( Vents, hatchs, Foam Dams, Ladders, etc.). Environmental Emission Control Protection. Solutions. Safety. Floating Suction Arms. We Can Help With. Geodesic Dome Roofs. Internal Floating Roofs. Floating Roof Seals and Secondary Seals, Double Seals. Roof Drain Systems and Equipments. Floating Roof Accessories ( Vents, hatchs, Foam Dams, Ladders, etc.). Emission Control Solutions. Floating Suction Arms. A WORLD WIDE ENGINEERING AND SERVICE TO THE PETROLEUM-REFINERY AND CHEMICAL INDUSTRY info@atecotank.com

4 PRODUCTION CAPABILITIES MANUFACTURING ATECO TANK ENGINEERING has it's own in house manufacturing facilities capable of producing all metallic components of any floating roof seal design. Some of our facilities include : CNC Turret Punch Press CNC Guillotine CNC Abkant CNC Plasma Cutting Machine Benders Power Rollers Plasma Cutters Tig and Mig Welding Shot blast and Paint Spraying Eccentric Press ton Polymeric seal components are produced for us by partner companies to formulations that have been proven in service over many years. A complete range of polymers is available so that we are able to produce any seal design with materials resistant to any particular petroleum product. Facilities include : Mills Calendars Rotacures Flat Bed Presses Extruders Moulds Our organisation allows us to respond quickly where a client's operational needs require the production of either a complete seal or perhaps just replacement parts of a seal in the shortest possible time. All manufacture is Quality Assured to BS EN 9001:2008 For Details :

5 SEAL SELECTION Floating Roof Tank Seals With over 20 years combined experience of floating roof seals and drain systems for floating roof storage tanks our engineering team can adapt any of our seal designs to suit your particular roof configuration. In particular if you have tanks that suffer from tank shell distortion we can tailor make a sealing system that will provide an effective sealing solution. We can also quote & supply for replacement parts (retro-fit) for older types of Seals subject to suitable drawings being supplied by the purchaser. All our Floating roof tank seals are designed to withstand environmental conditions, stored product, tank data including rim space data/out of roundness surveys, & emission control. Different types of seals & combinations are available to suit pontoon & double deck external floating roof tanks & fixed roof tanks with pan deck roofs or aluminium decks. Floating roof tank seals normally fall into 3 different categories : Primary Seals Secondary Seals Double Seals Please read our guide on Floating Roof Seals as below. PRIMARY SEALS Mechanical Seals : Suitable for tanks without appreciable tank shell distortion or where the product stored is particularly aggressive. Unsuitable for distorted tanks shells or where shell coatings have been applied. The counterweight system (PT-1) is preferred to the coil spring or pusher bar system as the sealing pressure is constant over time. Sealing rings (Shoe Plates) are normally supplied in 1.6mm Galvanised Steel but stainless steel can be provided where corrosion is known to be a problem. The standard material for the continuous fabric seal is a special blend of PVC Nitrile on nylon fabric. For service with aggressive products such as Benzene, Toluene etc, PTFE or Viton can be supplied. Where fire resistance is important, "Firescreen" should be used. Liquid Seals : Suitable for all tanks but particularly where tank shell distortion is present. The Tubeseal design is preferred to the PT-5 (SR5) design as the sealing liquid is contained in a separate inner tube. Both seals are product mounted and therefore in the highest efficiency category as defined in API Publication Chapter 19.

6 SEAL SELECTION Foam Seals : Used either as vapour mounted (not in contact with the stored product) or liquid/product mounted. Product mounting is much more efficient. Care must be taken to ensure that the tank shell surface is free from sharp edges to avoid damage to the polymeric casing. The seal envelope may be either PVC Nitrile (suitable for service in direct contact with up to 70% aromatics and in vapour contact with up to 100% aromatics), Polyurethane (suitable for up to 100% aromatic service in either direct or vapour contact, but not for certain aggressive chemicals such as Benzene, Toluene or Xylene), or Viton (suitable for virtually all services except MTBE). SECONDARY SEALS Rim Mounted Seals : Rim mounted secondary seals are fixed at the top of the rim plate on the floating roof. These seals are always fitted above a conventional primary seal. A tight fitting secondary seal acts as an excellent secondary vapour barrier containment & also protects the tank contents & primary seal against weather elements & debris. The most efficient secondary seal design is the PT-S1 because : The Wiper has a large contact depth with the tank shell. It incorporates a continuous vapour barrier membrane for optimum sealing efficiency. The compression plates overlap but are not bolted together thus giving a very flexible seal, better able to compensate for tank shell deformations. It is supplied with all necessary holes pre-punched to give minimum installation time. The seal will re-enter the tank without damage or tendency to hang up in the accidental event of overfilling of the tank. The PT-S2 type design is a lower cost solution with no vapour barrier membrane and in which the compression plates are bolted together with a gasket in between to form the seal. Drilling of holes on site is required in order to assemble the wiper seal. The PT-S2 can be supplied with a vapour barrier membrane to replace bolting the plates thus giving a more flexible seal. The PT-S3 type design is similar to that of the Gasket-tite, but with a double-tip type wiper. Shoe Mounted Secondary Seals : Are used only on primary shoe mounted seals. These seals are fixed at the top of the shoe plate & offer a basic low cost secondary vapour barrier containment. As per API 650, these seals are now normally restricted to use on internal floating roof tanks. Secondary Wiper Seals : Are commonly used on internal floating roof tanks with a suitable primary seal installed below. These consist of either a wedge shaped Rubber or Foam extrusion bolted to the pontoon rim.

7 SEAL SELECTION DOUBLE SEALS The most effective double seal is the Tubeseal primary seal with the PT-S1 secondary seal. Of the compression plate designs of double seal the most effective seal is the PT-D1 for the reasons given in the section on the PT-S1 Secondary Seal. Material selection for secondary and double seals should be made using the same guidance given for primary seals. Most Seal failures occur as a result of one or more of the following factors : Incorrect rim space data. Most seal specifications will say "nominal rim space 200mm" when the actual rim space is much greater and involves ovality. Incorrect material selection for the intended service. Incorrect seal selection for the tank configuration (ovality, condition of tank shell weld seams etc). Incorrect installation techniques. Finally, it is vital that the seal components are manufactured from materials that have been proven in service under all climatic conditions. Should you wish to discuss a particular sealing problem, please do not hesitate to contact us.

8 ULTIMATE SEAL INDEX SEAL TYPES MSS-P-SCR1 MSS-P-PTG1 P-FD-01 P-FG-01 P-FS-01 P-TB-01 ATC-S100 ATC-S200 ATC-S300 ATC-SSPC ATC-D100 ATC-D200 ATC-D300 ATC-DSPCS P-LPS-01 PRIMARY SCISSOR TYPE MECHANICAL SHOE SEAL PRIMARY PANTOGRAPH TYPE MECHANICAL SHOE SEAL FOAM DELTOID SEAL FOAM GRAVER SEAL FOAM SEAL TUBE LIQUID FILLED / BAG SEAL SECONDARY SEAL FLAT WIPER LIP SECONDARY SEAL L WIPER LIP SECONDARY SEAL DUAL WIPER LIP SPECIAL SECONDARY SEAL TYPES DOUBLE SEAL FLAT WIPER LIP DOUBLE SEAL L WIPER LIP DOUBLE SEAL DUAL WIPER LIP SPECIAL DOUBLE SEAL TYPES LOW PROFILE SECONDARY SEAL LP SERIES FABRICS ATECON ATECOTHANE ATECOMIX ATECOPRENE ATECOTON ATECORILE PTFE PRIMARY AND SECONDARY SEAL VAPOUR BARRIER/FABRIC POLYURETHANE PRIMARY AND SECONDARY SEAL VAPOUR BARRIER/FABRIC PVC/NBR PRIMARY AND SECONDARY SEAL VAPOUR BARRIER/FABRIC NEOPRENE PRIMARY AND SECONDARY SEAL VAPOUR BARRIER/FABRIC VITON PRIMARY AND SECONDARY SEAL VAPOUR BARRIER/FABRIC NITRILE PRIMARY AND SECONDARY SEAL VAPOUR BARRIER/FABRIC

9 MSS-1000 PRIMARY MECHANICAL SHOE SEAL Key Component Material 1 Sealing Ring ( Shoe Plates) 1,6 mm Galvanized Steel or 1,2 mm Stainless Steel 2 Rim Mounting Brackets Galvanized Steel or 300 Series Stainless Steel 3 Shoe Channel Arms Galvanized Steel or 300 Series Stainless Steel 4 Main Scissor Channel Arms Galvanized Steel or 300 Series Stainless Steel 5 Horizontal Spring T302 Stainless Steel 6 Vertical Spring T301 Stainless Steel BASIC INFORMATION Type Description Used On Rim Space Service API Compliant Codres Compliant API 2003 Compliant Primary Seal Mechanical Scissor Shoe Seal External Floating Roof Tanks Nominal Rim Spaces of 200 mm ± 125 mm or 300 mm ± 225 mm Suitable For All Products With Correct Material Selection. Yes Yes Yes Aromatic Service %100 Typical Service Life 15~25 years Weight 43 Kg s / mt. ( Typical Based On 200 mm Rim Space )

10 MSS-P-SCR1 PRIMARY MECHANICAL SHOE SEAL ADVANGATES 1. Designed to be installed as a hang-in-place seal system. No welding or drilling in the rim plate required. 2.The shoe seal can be installed while the tank remains in service. Limited hot work required. 3.The design uses a two-hanger per shoe system. This eliminates gap problems common on seal systems with multiple hangers per shoe. 4.Custom shoes from 16 to 48 wide based on the rim height. Emissions are regulated by shoe extension below the liquid. 5.The MSS-P-SCR1 mini shoe is adaptable to aluminum and steel internal-floating roofs. The mini shoes are designed to fit on pan-floating roofs with 15 or less of rim space. Custom shoe widths from 16 to 24 to meet the weight requirements of shallow steel roofs. 6.Tensioners are applied to the top and bottom of the shoe. This keeps the entire width of the shoe in contact with the tank shell. This is important with wax scraper designs. 7. The hanger maintains a constant shoe elevation. This eliminates gaps caused by uneven elevation in various rim-space widths. 8. Expansion joints at each shoe provide superior seal gap control during expansion and contraction while roof is in motion. 9. The MSS-P-SCR1 primary shoe seal is designed for flexibility in installation with egg-shaped tanks. DESIGN ATECO Tank Engineering primary shoe seal has been designed with a long lasting tensioning and hanger system to maintain seal compliance throughout the seal life. Design criteria: 1. The MSS-P-SCR1 forms a tight fitting seal between the floating roof and tank shell wall The seal meets the radial variations of ± 4 inches. 2. The design eliminates shoe top roll back and gaping. 3. The primary seal operates independently and without interfering with the secondary seal. 4. The seal has been designed to accommodate roof movement, shell defects, contraction, and expansion. 5. The seal is designed for out-of-service or in-service installations. REGULATORY COMPLIANCE ATECO Tank Engineering seals meet or exceed the allowable gap requirements set forth by the governmental and regulatory agencies throughout the United States. This design will show superior sealing ability throughout the roof travel; accounting for roof shifting, out of roundness, buckling, and the expansion and contraction requirement of each tank. DISADVANTAGES ATECO TANK TECHNOLOGIES ENGINEERING CO.LTD.

11 NUMERICAL CLASSIFICATION OF CURRENT ATECOFLEX SEAL SPECIFICATIONS [Classification] CONTINUOUS SEALS AF.100 Neoprene Anti-Static Conditinuos Seal, Asbestos Reinforced 3,2 mm. Use-in vapours up to 85% Aromastics. AF.101 Neoprene Standard Conditinuos Seal, Asbestos Reinforced 3,2 mm. Use-in vapours up to 85% Aromastics. AF.102 Neoprene Standard Conditinuos Seal, Asbestos Reinforced 2,4 mm. Use-in vapours up to 85% Aromastics. AF.200 P.V.C. Continuous Seal, Nylon Reinforced 1,6 mm Use-in vapours up to 100% Aromatics. AF.300 P.V.C./Nitrile Standard Continuous Seal, Asbestos Reinforced 3,2 mm Use-in vapours up to 100% Aromatics. AF.301 P.V.C./Nitrile Standard Continuous Seal, Asbestos Reinforced 2,4 mm Use-in vapours up to 100% Aromatics. AF.302 P.V.C./Nitrile Standard Continuous Gasket Type Seal, Glass-Asbestos Reinforced 2,4 mm Use-in vapours up to 100% and Liquids up to %85 Aromatics. AF.103 Neoprene/Nylon Primary Seal 1,6 mm Use-in vapours up to 85% Aromatics. AF.104 Neoprene Standard Conditinuos Seal, Asbestos Reinforced 2,4 mm. Anti-Static Use-in vapours up to 85% Aromastics. AF.400 Viton Continuos Seal. Use-in vapours and liquids up to 100% Aromatics. AF.105 Neoprene Continuos Seal, Asbestos Reinforced 2,4 mm Use-in vapours up to 85% Aromatics. AF.303 P.V.C./Nitrile Continuos Seal Fibreglass Reinforced 1,6 mm Use-in vapours up to 100% Aromatics. AF.304 Can be used as 1,6 mm thick Secondary Seal and Second-Shoe Seal. P.V.C. Nitrile/Nylon Reinforced 2,4 mm thick for up to 100% Aromatic Vapours. SECONDARY SEALS AF.106 Neoprene Standard Secondary Seal, Non-Reinforced 2,4 mm. Use-in vapours up to 85% Aromastics. AF.107 Neoprene Standard Secondary Seal, Cotton Reinforced 3,2 mm. Use-in vapours up to 85% Aromastics. AF.305 P.V.C./Nitrile Standard Secondary Seal, Non-Reinforced 2,4 mm Use-in vapours up to 100% Aromatics. AF.108 Neoprene Anti-Static Secondary Seal Cotton Reinforced 3,2 mm. Use-in vapours up to 85% Aromastics. AF.306 P.V.C./Nitrile Standard Secondary Seal, Cotton Reinforced 3,2 mm. 100% Aromatic Vapours Use-in vapours up to 100% Aromatics. SECOND-SHOE SEALS AF.106 Neoprene Second-Shoe Seal. Glass Reinforced 1,6 mm Use-in vapours up to 85% Aromatics. AF.106 P.V.C./Nitrile Standard Seal. Conditinuos Gasket Type Seal, Glass/Asbestos Reinforced 2,4 mm Use-in vapours up to 100% Aromatics. LIQUID FILLED SEALS AF.106 Nitrile Fabric Seal. Nylon Reinforced AF.106 P.V.C. /Nitrile Fabric Seal, Nylon Reinforced. 100% Aromatic Liquids. AF.106 Nitrile Fabric Seal, with liner, nylon reinforced 40% Aromatic Liquids. AF.106 P.V.C./Nitrile Graver Liquid Filled Seal 85% Aromatic Liquids. AF.106 P.V.C./Nitrile Tube Seal, Scuffband. 85% Aromatic Liquids. AF.106 P.V.C./Nitrile Tube Seal, Tube 85% Aromatic Liquids. Note : The filling liquid must be Kerosene or Similar low aromatic liquid. FOAM FILLED SEALS AF.106 Polyurethane Foam Filled Seal. 100% Aromatic Liquid. AF.106 P.V.C./Nitrile Foam Filled Seal 85% Aromatic Liquid. AF.106 Polyurethane Everseal Foam Seal. 100% Aromatic Liquid. AF.106 P.V.C./Nitrile Everseal Foam Seal 85% Aromatic Liquid. AF.106 Polyurethane Gravers Foam Filled Seal. 100% Aromatic Liquid. AF.106 P.V.C./Nitrile Gravers Foam Filled Seal 85% Aromatic Liquid. AF.106 Polyurethane Seal 100% Aromatic Liquid. AF.106 Polyurethane Deltoid Seal 100% Aromatic Liquid. AF.106 Viton Coated Nylon for all types of Foam Seal for 100% Aromatic Liquid. AF.106 Polyurethane Coated Nylon material for general use. We reserve the right to change specifications on items described on this publication without prior notice.

12 SECONDARY SEAL EXTRUDED WIPER LIP TIPS CONFIGURATIONS 1/2 TYPE SSW-01 TYPE SSW-02 TYPE SSW-03 NO 001 NO 002 NO 003 TYPE SSW-04 TYPE SSW-05 TYPE SSW-06 NO 004 NO 005 NO 006 TYPE SSW-07 TYPE SSW-08 TYPE SSW-09 NO 007 NO 008 NO 009 TYPE SSW-10 TYPE SSW-11 TYPE SSW-12 NO 010 NO 011 NO 012

13 SECONDARY SEAL EXTRUDED WIPER LIP TIPS CONFIGURATIONS 2/2 TYPE SSW-13 TYPE SSW-14 TYPE SSW-15 NO 013 NO 014 NO 015 TYPE SSW-16 TYPE SSW-17 TYPE SSW-18 NO 016 NO 017 NO 018 TYPE SSW-19 TYPE SSW-20 TYPE SSW-21 NO 019 NO 020 NO 021 TYPE SSW-22 TYPE SSW-23 TYPE SSW-24 NO 022 NO 023 NO 024

14 ADDITIONAL INFORMATIONS SEAL FABRIC PROPERTIES

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