Cryogenic Pipe Support Systems

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1 Cryogenic Pipe Support Systems Overview Rilco cryogenic pipe supports are developed to support cold piping in various applications ranging from chilled water to liquefied natural gas. The qualified service temperature is from -425º F (-253º C) to 275º F (35º C). Rilco cryogenic supports are the latest technology in cold pipe support systems. These supports are an innovative design that utilizes the most efficient and cost effective materials that provide long-term energy savings. Since the supports are pre-insulated the expensive process of welding to pipe is eliminated and leads to labor cost savings since our installation process has been completely streamlined. Furthermore, the threat of CUI (corrosion under insulation), or any associated field corrosion problem, has also been eliminated with the implementation of Rilco s latest cryogenic support technology. Each support is individually packaged and is shipped completely assembled and ready for installation. Cryogenic Product Lines Pre-Insulated Pipe Shoes Anchors and Guide Isolation blocks Micarta blocks, sleeves, and washers Ployurethane foams ( lbs, 8 lbs, lbs, 2 lbs, 3 lbs density) Foam Glass Insulation Mascoat (insulation paint for personnel protection) Benefits of Rilco Cryogenic Pipe Supports Prevents the formation of condensation on/around the piping system Prevents moisture ingress into the piping insulation Preserves the process temperature of the fluid in the pipe Prevents the chilling of the supporting structure Eliminates welding high-cost alloy supports to alloy piping Eliminates galvanic corrosion due non compatible materials between pipe and support Significant energy savings Each unit is shipped completely assembled and ready for installation reducing the installation costs General Information Insulation is molded to the thickness and layering of process line insulation to ensure proper field fit per ASTM C585 Rilco polyurethane foam is a carbon dioxide blown system and contains no environmentally hazardous materials Each unit is individually bagged to protect against damage in shipping and storage Design temperature ranges: -425º F (-253º C) to 275º F (35º C) 5% closed cell content Water absorption:.5 lb./cubic ft Test results accurate to within +/- %

2 Support Designs Design Drawing Description Resting Pre- Insulated supports that restrain the pipe vertically, but allow axial and lateral movement. Guided Insulated supports that restrain the pipe vertically and laterally, but allow axial movement. Anchor Clamp Hanger Guide clips or vertical guide members are provided with these designs which are attached to the supporting structure and restrain the lateral movement of the support. Insulated supports that restrain the pipe vertically, laterally, and axially. Anchor supports are provided with guide clips that prevent lateral movement. Insulated supports that restrain the pipe vertically by using an insulated pipe clamp. The pipe is supported by the clamp and the insulation is located between the clamp and the pipe. Support Components Type Photo Description High Density Polyurethane Foam One of the best materials for cold insulation. Rilco produces various density supports and can also customize the density to specific project needs. The foam section can be stepped both radically and longitudinally to tie in with the same layering thickness as the line insulation to prevent straight heat path to the pipe. Vapor Barriers Protective Mastic Outer Sheet Metal Jacket Steel Housing with For alternative insulation options contact a Rilco sales representative. A paper or plastic back sheet that wraps 3 around the foam section that protects against moisture ingress. The vapor barrier is glued to the foam and overlaps the joint between the two insulation halves by at least in/25 mm. If pipe supports are installed before the insulation is installed, we will apply protective mastic on the exposed surfaces of the supports to protect from the weather conditions until the insulation installation is completed. The metal jacket is typically wrapped around the foam section and outside the vapor barrier and is a typical feature on most Rilco designs. Designed to provide adequate support for the insulation section

3 Base Components while properly transferring the load to be restrained to the supporting structure. Selecting the Correct Support º RADIAL SINGLE LAYER IS- IG--SLR IG--SLS INSUL-GUIDE DOUBLE LAYER IG--DLR 8º RADIAL SINGLE LAYER DOUBLE LAYER IG-8-SLR IG-8-DLR FLAT SURFACE 3º RADIAL CF- CF-2 CF-4 CF-4 RESTING 8º RADIAL CF-3 CF-3 ROLLER 3º RADIAL 8º RADIAL CR-4 CR-4 CR-3 CR-3 BASE TYPE SLIDING LATERAL TRAVEL + - 2" LATERAL TRAVEL VARIABLE AXIAL TRAVEL + -.5" AXIAL TRAVEL + -.5" CS- CS- CS-2 CS-2 CS-5 CS-5 CS- CS- BOLTED ANCHOR CA- CA-2 ANCHOR WITH GAP CA- CA-2 ANCHOR ANCHOR CLIPS STRUCTURAL GUIDE CA-4 CA-4 CA-4 CA-4 INSUL-CERT ANCHOR CA-5 VERTICAL RESTRAINT CA- GUIDED GUIDE CLIPS AXIAL TRAVEL + -.5" CG-3 CG-3 CG-4 CG-4

4 STRUCTURAL GUIDE ANGLE GUIDE INSULATION BLOCK AXIAL TRAVEL + -.5" AXIAL TRAVEL + -.5" BLOCK ASSEMBLY CG-3 CG-3 CG-4 CG-4 CG-7 CG-7 CG-8 CG-8 CB- CB-2 RISER CLAMP CV-2 CV-2 HALF CLAMP CH-2 CH-2 HANGER TYPE BOLTED CLAMP CLEVIS 3º RADIAL CH- CH- CC- CC-2 CC-4 CC-4 8º RADIAL CC-3 CC-3 Test Results Sampl e Density lb/ft kg/m ³ ³ Temperatu re Deformati Compressive stren on in % of Compressiv e 2% deformatio n thickness kg/c Fº Cº lb. kg. psi kg/cm² psi m² Compressiv e strength w/5: safety factor kg/c psi m² lb. pe r cu. ft % % % %

5 % A % % lb. pe r cu. ft % % % % A % % lb. pe r cu. ft % % % % A % lb. pe r cu. ft. 2A A A % % % A %

6 - 3 2A % A % Specifications A. Scope i. This specification covers the requirements for design, fabrication, and use of load bearing low temperature insulated pipe supports. [Applicable temperature range of - 475º F (-28º C) to 275ºF (35º C)] B. General Requirements i. All insulated piping will be supported with insulated pipe supports ii. Insulated pipe supports will comply with the latest edition of the following: iii. iv. ANSI/ASME B3. & B3.3 Manufactures Standardization Society (MSC) SP- 58,, & 8 Considerations will be given to the following criteria in the selection of insulated pipe supports: Vertical, lateral, and axial support design load limits Vertical, lateral, and axial support design travel limits Support temperature design limit both at the pipe and support outside ambient temperature Any test or installation loadings or displacements that may exceed normal system operating conditions Required dimensional clearances needed during installation and system operation should be specified Localized lugs and pipe stresses for insulated pipe supports requiring lugs or welded attachments welded to the pipe o Material of the welded attachments should be compatible with the pipe Consideration should be given to loadings and displacement resulting from seismic, water hammer, and similar conditions At the request of the owner or his/her designee, calculations and other related documentation that demonstrate adequacy and compliance with the design requirements will be made available for his/her review v. At the request of the owner or his/her designee, localized stress calculations for lugs vi. C. Design Criteria or other welded pipe attachments shall be made available for his/her review Any special requirements, such as material test reports, or certified mill test reports, need to be specified in advance

7 i. The load bearing insulating material used in the supplied insulated support should be of the same material that was used to load rate the support ii. At the request of the owner or his/her designee, supplier will make available compressive strength and thermal conductivity testing results of high density polyurethane by an independent laboratory in a format provided for in MSS SP-8. [Testing of material shall take place at a maximum temperature of -2º F (-7º C)] iii. At the request of the owner or his/her designee, a description of the basis used to load rate the insulated pipe support should be provided for evaluation iv. A minimum safety factor of 5 at the system design temperature will be used to determine the insulate pipe support load rating v. The testing used to establish load bearing insulation compressive properties will comply with ASTM D 2: Standard Test Method for Compressive Properties of Rigid Cellular Plastics vi. The testing used to establish thermal conductivity properties of high density polyurethane will comply with ASTM C 77-85: Steady State Heat Flux Measurement and Thermal Transmission Properties by Means of the Guard Hot Plate Apparatus vii. The load bearing element load capacity shall be demonstrated at the piping system design temperature and load viii. The insulated pipe support assembly should exert a minimum clamping force on the pipe to assure that the assembly will move axially with the pipe and not slip relative to the pipe when subjected to the design conditions ix. All sliding surfaces will be designed in such a manner as to limit the coefficient of friction to. for the system design life without requiring lubrication x. Care shall be exercised in the selection of the sliding surface material to assure that corrosion of the sliding surface will not adversely affect the coefficient of friction over time xi. Any friction reducing material used that requires bonding shall be bonded to the backing structure prior to shipment & lb/ft 3 foam:. BTU-in/hr-ft²-º F (.23 W/meter*K) 5 lb/ft 3 foam:.2 BTU-in/hr-ft²-º F (.238W/meter*K) 2 lb/ft 3 foam:.25 BTU-in/hr-ft²-º F (.35 W/meter*K) xii. High density polyurethane will not contain (or use during fabrication) environmentally hazardous CFCs D. Fabrications i. Insulated pipe supports Requirements: Pre-assembled with sufficient insulation extending beyond the support outer metal jacket to allow the pipe insulator to make a standard insulation butt joint Exposed surfaces should be coated with a mastic to protect the foam from moisture and ultraviolet light degradation [mastic perm rating <=.2 (ASTM E-)]

8 A vapor barrier between the jacket and the insulating material with [Vapor barrier perm rating <=.2] Insulation ID and OD dimensions per ASTM Specification C585 unless otherwise specified ii. Designs with sliding surfaces will incorporate two slide plates at each sliding surface Each slide plate shall be composed of a 3/32" (2.5 mm) thick glass-filled reinforced Teflon that is bonded to a GA. carbon steel backing plate On these to be welded plates, the Teflon should be recessed /4" (.5 mm) from the edge iii. All welding shall comply with the requirements Section IX of the ASME Boiler and Pressure Vessel code and AWS D. iv. The following items will be in accordance with the following (unless otherwise noted on contract drawings): Structure shape and plate: ASTM A-3 Bolts/studs greater than /4": ASTM A-3 Grade B7 Bolts and nuts less than or equal to /4": ASTM A-37 E. Shipping and Handling i. Each insulated support assembled should be clearly and permanently marketing with the support identification number ii. The identification number should be placed in a location that is visible before and after installation iii. Supports should be shipped in either reinforced cardboard or strap board crated with a cover iv. Each container should be clearly marked with a unique number and each support should individually wrapped by plastic sheets v. Each container will have two copies of the packing slip [one copy packed inside and another taped on the outside] vi. Prior to installation the supports will be stored in a dry, covered area to avoid exposure to sunlight, rain, and moisture F. Extent of Work i. Work included: Furnish the insulated pipe support assembly Encompass the insulating materials, metal jacket, fabricating steel housing, guide clips, associated hardware including clamps, bolts and nuts, screws, slide plates and other components required for complete assembly ii. Work not included: Structural steel parts which are not integral parts of the insulated pipe support assembly Receiving, unloading and installing of the insulated pipe supports.