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low temperature welding use ful in process equipments which under goes temperature hammering during operation

Transcript of cryogenic welding

Cryogenic Pipe SupportsAbout MAINEPORT LimitedWe are an engineering company experienced in manufacturing and marketing products and services for U.K. and international projects in the energy and process industries. Our purpose is to satisfy client needs for engineered products delivered to project requirements, working closely with our clients to create supply options which support their project objectives. Our clients are international designers and owners of utilities and process plant, including the major oil companies and petrochemical contractors.

Product RangePipe Supports Cold / Cryogenic Insulated Acoustic Insulated Hot Insulated Fabricated Supports Spring Supports PTFE Sliders Bulk Piping Material Thermal Insulation Insulation Cladding, Mastics, Sealants and Adhesives Flanges, Blinds and Spacers Butt-Weld, Fabricated and Forged Fittings Anchor Bolts and Fasteners Gaskets and Bolting Pipework Technology Pipe Spooling Lined / Coated Pipe Systems Manifolds and Headers Weld Overlay Heating / Cooling Coils Strainers Modular Plant Technology Pre-assembled Units (PAU) Pre-assembled Racks (PAR) Ducting and Bellows Assemblies Secondary Steelwork Chutes and Hoppers Tanks

Note We have endeavoured in this catalogue to make the information as accurate as possible, but we cannot accept any responsibility should it be found that in any respect the information is inaccurate or incomplete or becomes so as a result of further developments.

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Cryogenic Pipe SupportsContentsIntroduction Section 1 Fully Insulated Pipe Supports Page 3 4

SIPStm Pipe SupportsHangers Sliders Guides Guides (heavy duty) Line Stops Anchors Section 2 Cold Break Pipe Supports Insulated Guides and Clamps Moulded Pipe Shoe Insulated Base Plate / Attachment Pipe Clamps Pipe Support Trunnions Clamped Pipe Shoes 40-200 NB Clamped Pipe Shoes 250-600 NB Pipe Anchors 40-200 NB Pipe Anchors 250-600 NB Material Data UNITHERM 1000 PTFE Slider Plate Assemblies 24

Section 3

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Cryogenic Pipe SupportsIntroductionMAINEPORT manufactures two ranges of Cryogenic Pipe Supports, incorporating advanced technology in low temperature material applications. 1. Fully Insulated Pipe Supports; - developed for continuous low temperature service using cellular foam and laminated materials to give a high compressive strength with low thermal conductivity. Service range: -196C to +135C. 2. Cold Break Pipe Supports; - developed for piping in intermittent service incorporating UNITHERM 1000 glass reinforced phenolic laminate. Service range: -196C to 200C.

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Cryogenic Pipe SupportsSECTION 1. Fully Insulated Pipe SupportsType range MAINEPORT manufacture a complete range of pre-insulated support types: Sliders Guides Line Stops Anchors Hangers Standard sizes available range from 15NB pipe to 600 NB pipe with insulation thickness up to 200mm. Design features The supports incorporate closed cellular foam with vapour barriers to eliminate moisture ingress. Safe working loads are based on a minimum factor of safety of 5. The diameters of the high density foam are the same as the insulation on the line pipe. Supports are fully pre-assembled for ease of installation. Design can be customised to meet client specifications, loading and size requirements. Condensation potential is minimised giving longer system. service life. multi layer insulation can be provided. (see table 14 for standard section sizes). sound transmission may be reduced by use of acoustic material bonded directly to support plate.

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Cryogenic Pipe SupportsUNITHERM 4000 PU - Rigid Polyurethane FoamDescription Unitherm 4000 PU is a rigid, high density, closed cell polyurethane foam specifically formulated to meet the demands of cryogenic pipe support applications.o The foam is manufactured in individual 180 moulds designed to meet the close dimensional tolerances of standard specifications such as ASTM C585-90 whilst providing an high quality surface and skin definition not achieved with cut products.

Combined with high integrity mould design and a state-of-the-art environmentally friendly manufacturing processes Unitherm PUF offers a high quality, V-O rated flame retardant foam available in densities from 160kg/m to 500kg/m. The in-house PUF manufacturing facility provides end-users with access to a one-stop-shop for the design and manufacture of cryogenic pipe-supports where ease of fitting on-site is important. Typical Applications Unitherm PUF is monolithically moulded in half-shells for cradle type designs or in rectangular blocks as thermal break for use in cryogenic pipe support applications. Technical specification Thermal conductivity @ @ @ Water absorption % @ Flexural strength @ Flexural modulus Compressive @ @ @ Flammability UL-94 Thermal Operating Ozone depletion Quality Assurance All performance data has been derived from independent laboratory tests conducted by a recognized cryogenic research establishment and the results witnessed by Lloyds Register and MAINEPORT Industries Ltd. MAINEPORT operates a quality assurance system which complies with the requirements of BS EN ISO 9001:19945

25C -60C -160C 25C 25C 25C -60C -196C

160 225 320 0.030 0.036 0.049 0.026 0.032 0.046 0.020 0.024 0.035 6.1 5.2 3.2 2.9 4.9 7.8 75 129 227 2.3 4.1 8.4 3.68 6.29 12.79 4.54 10.13 16.91 V-O V-O V-O -196C to + 120C Zero Zero Zero

Cryogenic Pipe Supports

SIPS Description

PIPE SUPPORTS

SIPS (segmented, insulated pipe shoes) are rigid, high density, closed cell foam segments specifically formulated to meet the demands of insulated pipe support applications. The foam is manufactured in 60 moulded segments designed to meet the dimensional tolerances of standard specifications such as ASTM C585-90 providing an high performance economic solution for the support of insulated pipe systems. The integral mould design and state-of-the-art manufacturing processes offer high quality, V-O rated flame retardant foams available in advanced composite materials ranging from 500 to 800 kg/m density. The in-house manufacturing facility provides end-users with access to a one-stop shop for the design and manufacture of insulated pipe supports for either hot or cold systems. The shoe is supplied complete with adhesive for bonding to the pipe simply remove the foil. See Data Sheet on next page for dimensions and loads. Options Additional shoes can be positioned to the side or above the pipe to accommodate lateral or uplift loads. PTFE sheet can be bonded to the base to reduce friction. Special configurations for line stops and anchors are available. Low Density Pipe Insulation Pipe

High Density Pipe Support Segment

Integral Stainless Steel Mould

Optional Guide

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Cryogenic Pipe Supports

SIPS Low Density Line Insulation t max

PIPE SUPPORTS

Notes HD Foam density 500 kg/m3 min: allowable comp.load 1.35 MPa Bottom plate: 1.5 mm thk 304ss for 0.5" to 4" NB, 3mm thk for over 4" NB Support to be bonded to pipe per approved procedure Pipe C/L 2" to 8"NB

BOP H2 High Density Segment TOS Min. steel width up to 3" 50mm 4" to 8" 75mm 10"& above 100mm B A 10"NB and above 'A' Range tmax Width A Height B 50 50 50 55 60 60 65 70 70 75 212 45 75 237 45 75 253 45 75 279 45 75 304 45 80 334 41 80 385 41 85 466 36 85 492 36 85 542 36 H1 H2 H1 Bottom Plate

0.5" to 1.5"NB

Pipe dia " Pipe OD Max Load kg 0.5 21 74 0.75 27 95 1 33 117 1.50 48 170 2 60 212 3 89 315 4 114 604 6 168 891 8 219 1161 10 273 2855 12 324 3200 14 356 3416 16 407 3760 18 457 4097 20 508 4509 24 610 5198 30 762 6291 32 813 6635 36 914 7317

H1 75 75 75 80 85 85 90 95 95 110 110 110 110 110 110 110 110 110 110

H2 86 89 92 104 115 130 147 179 205 247 272 288 314 339 364 415 491 517 567

H1 95 100 105 110 115 120 125 130 135 150 150 150 150 150 150 155 175 175 175

H2 106 114 122 134 145 165 182 214 245 287 312 328 354 379 404 460 556 582 632

'B' Range tmax Width A Height B 70 75 80 85 90 95 100 105 110 115 252 50 120 282 46 120 298 46 125 329 42 125 354 42 125 379 42 130 435 42 150 531 45 150 557 45 150 607 45

H1 110 115 120 130 135 140 150 160 165 180 180 180 180 190 190 190 225 225 225

H2 121 129 137 154 165 185 207 244 275 317 342 358 384 419 444 495 606 632 682

'C' Range tmax Width A Height B 105 105 105 120 120 135 140 155 165 150 287 50 150 312 50 150 328 50 150 354 50 185 414 30 185 439 30 185 490 30 225 606 30 225 632 30 225 682 30

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Cryogenic Pipe SupportsOptional PTFE Slide Plates Where the co-efficient of friction is required to be limited to 0.10 the support can be supplied with a PTFE pad bonded directly to the underside of the support shoe and with one loose PTFE slider plate to be fitted to supporting steel. (See Section 3 for PTFE Slider Plate Assemblies) Fabrication The pre-insulated supports are provided with sufficient insulation extending beyond the the support outer metal jacket so that the pipe insulation contractor can make a standard insulation butt joint. The support shoe and metal jacket may be fabricated from either:Stainless steel type A240 grade 316L (16 cr - 12Ni - 2 Mo) Carbon steel (available also in hot dipped galvanised finish) Material used in welded pipe attachments should be compatible with the pipe material. Where required, Guides are supplied from structural quality carbon steels, unless otherwise specified. To order specify: - Part number - Pipe size - Vertical load - Rotational forces and movements - Outside ambient temperatures

- Insulation thickness - Axial and lateral loads - Operating temperature - Pipe wall thickness and material

Foam Cradles Cradles from high density polyurethane foam are supplied with the following properties. The density is selected to suit the load bearing requirements of the support.