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High Temperature (Hot)
Supports |
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General information |
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As an adaptation
to cold insulated supports, high temperature supports were
developed to take advantage of many of the cold insulated support features
over standard direct contact devices such as welded or clamp-on supports. The qualified service temperature is between
-10 º F (-23 º C)
and 1200 º F (650 º C), and to 1800 º F (983 º C )for some special
applications These 'hot' supports serve the following benefits:
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- Heat conservation.
- Reduces localized stresses.
- Prevents deterioration of the piping
insulation.
- Preserves the process temperature of the
fluid in the pipe.
- Prevents the heating of the supporting
structure.
- Prevents the use and welding of high cost
of alloy supports to alloy piping.
- Prevents shop welding of pipe supports in
pipe fabrication yards.
- Reduces installations costs of piping
insulation by eliminating special insulation transitions cutouts.
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Hot
Product Lines |
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- Pre-insulated pipe shoes
- Anchors and Guides
- Isolation blocks
- Micarta blocks, Sleeves and washers
- Calcium silicate insulation
- Foam glass insulation
- Mas Coat - Insulation Paint for
Personnel Protection.
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Features and Quality |
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- Latest technology, materials and designs
are used.
- Insulation is molded to the thickness
and layering of process line insulation per ASTM C585 to insure proper
field fit.
- Multiplayer insulation capable.
- Custom design available.
- Eliminates welding to pipe and expensive
and cumbersome post weld heat treatment process.
- Eliminates galvanic corrosion problems between
pipe and support material due to dissimilar materials.
- Saves cost through energy savings.
- Saves installation cost by eliminating
extra installation steps.
- Each unit is individually bagged to
protect against damage due to shipping and storage.
- Each unit is shipped completely
assembled and ready for installation.
- Reduces piping insulation breeches which
are source of corrosion.
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Selecting A Correct
Support ( Read the chart from left to right. Trace the chart from right to left ) |
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| BASE TYPE |
FLAT-SURFACE |
INSULATION
EXPOSED |
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| INSULATION
NOT EXPOSED |
| HF-1000 |
| HF-3000 |
| HF-5000 |
| HF-7000 |
| HF-7200 |
| HF-7400 |
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| ROLLER |
INSULATION
EXPOSED |
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| INSULATION
NOT EXPOSED |
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HR-3000 |
| HR-5000 |
| HR-8000 |
| HR-8200 |
| HR-8400 |
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| SLIDING |
LATERAL
TRAVEL +/- 2" |
AXIAL
TRAVEL +/- 1 ½" |
| HS-1000 |
| HS-1100 |
| HS-1200 |
| HS-1300 |
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| AXIAL
TRAVEL +/- 4 ½" |
| HS-2000 |
| HS-2100 |
| HS-2200 |
| HS-2300 |
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| LATERAL
TRAVEL VARIABLE |
AXIAL
TRAVEL +/- 1 ½" |
| HS-5000 |
| HS-5100 |
| HS-5200 |
| HS-5300 |
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| AXIAL
TRAVEL +/- 4 ½" |
| HS-6000 |
| HS-6100 |
| HS-6200 |
| HS-6300 |
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| LATERAL
TRAVEL +/- 2" |
AXIAL
TRAVEL +/- 4 |
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| ANCHOR |
BOLTED ANCHOR |
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| ANCHOR WITH
GAP |
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| ANCHOR CLIPS |
| HA-4000 |
| HA-4100 |
| HA-4200 |
| HA-4300 |
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| STRUCTURAL
GUIDE |
| HA-4010 |
| HA-4110 |
| HA-4200 |
| HA-4300 |
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| VERTICAL
RESTRAINT |
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| GUIDED |
GUIDE
CLIPS |
AXIAL
TRAVEL +/- 1 ½" |
| HG-3000 |
| HG-3100 |
| HG-3200 |
| HG-3300 |
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| AXIAL
TRAVEL +/- 4 ½" |
| HG-4000 |
| HG-4100 |
| HG-4200 |
| HG-4300 |
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| STRUCTURAL
GUIDE |
AXIAL
TRAVEL +/- 1 ½" |
| HG-3010 |
| HG-3110 |
| HG-3210 |
| HG-3310 |
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| AXIAL
TRAVEL +/- 4 ½" |
| HG-4010 |
| HG-4110 |
| HG-4210 |
| HG-4210 |
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| ANGLE
GUIDE |
AXIAL
TRAVEL +/- 1 ½" |
| HG-7000 |
| HG-7100 |
| HG-7200 |
| HG-7300 |
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| AXIAL
TRAVEL +/- 4 ½" |
| HG-8000 |
| HG-8100 |
| HG-8200 |
| HG-8300 |
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| HANGER
TYPE |
RISER
CLAMP |
| HV-2000 |
| HV-2100 |
| HV-2200 |
| HV-2300 |
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| HALF
CLAMP |
INSULATION
EXPOSED |
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| INSULATION
NOT EXPOSED |
| HH-4000 |
| HH-6000 |
| HH-6100 |
| HH-6200 |
| HH-6300 |
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| BOLTED
CLAMP |
INSULATION
EXPOSED |
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| INSULATION
NOT EXPOSED |
| HH-1000 |
| HH-3000 |
| HH-3100 |
| HH-3200 |
| HH-3300 |
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| CLEVIS |
INSULATION
EXPOSED |
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| INSULATION
NOT EXPOSED |
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Support
Designs |
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| Design |
Drawing |
Description |
| Resting |
Available soon |
Insulated
supports that restrain the pipe vertically but allow axial and
lateral movements. Some of Rilco's designs, such as the HS-1000 and
HS-2000 have high density calcium silicate inserts to both insulate
the pipe while restraining the vertical and clamping forces of the
support. Low density materials, such as calcium silicate pipe
insulation are married together with the high density inserts to
create a section of insulation to installed in conjunction with the
pipe insulation. |
| Guided |
Available soon |
Insulated
supports that restrain the pipe vertically and laterally but allow
axial movement. 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. In addition to the
high density inserts to restrain the vertical loads for resting
designs, guides designs also have inserts to restrain the lateral
loads as well. Some of these
designs include Rilco's HG-3000 and HG-4000 |
| Anchor |
Available soon |
Insulated
supports that restrain the pipe vertically, laterally and axially.
In addition to guide clips to prevent lateral movement, thrust rings
matching the pipe material are welded to the pipe which transfer the
axial load to through the support insulation, then to the support
housing which in turns tranfers the load the supporting structure. Some typical Rilco anchors are
HA-4000 and HA-4100. |
| Clamp Hanger |
Available soon |
Insulated
supports that restrain the pipe vertically by using a pipe clamp
which clamped the insulated pipe. In other words, the pipe is
supported by a clamp and the insulation is between the clamp and the
pipe. Typical material for the insulation is low or high density
calcium silicate. Rilco's commonly sold models are HH-3100. |
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Support Components |
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| Type |
Photo |
Description |
| High density
calcium silicate inserts |
Available soon |
A typical
insulation material for high temperature. Rilco has tested this
material at the required temperature to determine allowable design
stresses. Rilco stocks variety of densities of calcium silicate
material for different loading conditions. |
| Low
density insulating materials |
Available soon |
If
you prefer low density insulating materials instead of high density
calcium silicate, Rilco can provide perlite or foam glass. |
| Water
repellant |
Available soon |
To protect the
insulating materials from water, the insulation section is treated
with Rilco MP-11 water repellant. While this is a very preventative measure,
the support should be covered with plastic or other means if the
support is to remain exposed for an extended period of time. |
| Outer sheet metal jacket |
Available
soon |
A
standard feature on most Rilco designs. This is an outer metal
jacket, similar to the protective jacket on the line-insulation,
wraps on the outside of the vapor barrier and the insulation
section. This jacket is to be overlapped with line insulation jacket
during installation. Once installed, the insulation section of the
support will appear an integral part of the insulation construction. |
| Steel housing with base
components |
Available
soon |
To support the
insulation assembly, many of Rilco designs are supplied with a heavy
fabricated steel outer saddle with a base. Depending upon the
application, the steel assembly is designed to provide adequate
support for the insulation section while properly transferring the
loads to be restrained to the supporting structure. |
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Specification
(Click
here
to download this document in PDF format) |
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1. Scope |
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This
specification covers the requirements for design, fabrication and use of
load bearing high temperature insulated pipe supports. It is
applicable for pipes having a surface temperature ranges of -10 º F
(-23 º C) to 1200 º F (650 º C) |
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2.
General requirements |
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1 |
All
insulated piping shall be supported with insulated pipe supports. |
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2 |
Insulated
pipe supports shall comply with the latest edition of the following: |
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ANSI/ASME B31.1
& B31.3. |
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Manufactures
Standardization Society (MSC) SP-58, 69 & 89. |
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3 |
Considerations
shall be given to the following criteria in the selection of insulated
pipe supports |
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- 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. Material of the welded attachments should
compatible with the pipe.
- Consideration should
be given to loadings and displacement resulting from seismic, water hammer
and similar conditions.
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4 |
At the
request of the owner or his designee, calculations and other related
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documentation which demonstrate adequacy and compliance of
the insulated support with the design requirements shall be
made available for his review. |
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5 |
At the
request of the owner or his designee, localized stress calculations for |
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lugs or other welded pipe attachments shall be made
available for his review. |
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6 |
Any
special requirements, such as material test reports or certified mill test
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reports shall be specified in advance. |
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3. Design
criteria |
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1 |
The load
bearing insulating material used in the supplied insulated support shall
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be of the same material that was used to load rate the
support. |
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2 |
At the
request of the owner or his designee, supplier shall make available
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compressive strength and thermal conductivity testing
results of high density polyurethane by an independent
laboratory in a format provided for in MSS SP-89. Testing of
material shall take place at a maximum temperature of 1200 º
F (650 º C). |
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3 |
At the
request of the owner or his designee, a description of the basis used to
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oad rate the insulated pipe support shall be provided for
evaluation. A minimum safety factor of 5 at the system
design temperature shall be used in determine the insulate
pipe support load rating. |
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4 |
The
testing used to establish load bearing insulation compressive properties
shall comply with ASTM C 165, Standard Test Method for
Compressive Properties of Thermal insulation. |
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5 |
The
lower design temperature of the units both at the pipe surface shall be
-10 º |
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F (-23 º C). The maximum outside unit design temperature
shall be 200 F (93 C) and the maximum surface pipe
temperature of 1200 º F (650 º C) |
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6 |
The load
bearing element load capacity shall be demonstrated at the piping |
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system design temperature and load. |
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7 |
The
insulated pipe support assembly shall exert a minimum clamping force on
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the pipe to assure that the assembly will move axially with
the pipe and not slip relatively to the pipe when subjected
to the design conditions. |
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8 |
All
sliding surfaces shall be designed in such a manner as to limit the
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coefficient of friction to 0.1 for the system design life
without requiring lubrication. 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. Any friction
reducing material used that requires bonding shall be bonded
to the backing structure prior to shipment. |
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9 |
Required
properties of the load bering insulating materials under design conditions: |
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- Maximum thermal
conductivity of 1.2 BTU-in./hr-ft²- º F at mean insulation temperature
of 700 º F
- Maximum of
1/32" insulation deformation under the pipe is allowed due to
permanent consolidation of the load bearing insulation.
- Maximum of
1/32" additional non-permanent insulation deformation under the pipe
beyond that of (b) above is permitted.
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10 |
The
outside surface temperature of the unit shall not exceed 120 º F when the
ambient air temperature is 70 º F. |
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4. Fabrications |
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1 |
The
insulated pipe supports shall |
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- be pre-assembled
with sufficient insulation extending beyond the support outer metal jacket
so as to allow the pipe insulator to make a standard insulation butt
joint.
- have exposed
surfaces coated with a mastic to support the foam from moisture and ultraviolet
light degradation. Mastic shall have a minimum perm rating of .02 (ASTM
E-96)
- have a vapor barrier
between the jacket and the insulating material with a maximum perm rating
of .02
- have the insulation
ID and OD dimensions per ASTM Specification C585 unless otherwise
specified
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2 |
Designs
having sliding surfaces shall 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 bonded to a 10 GA. carbon steel backing
plate. On these to be welded plates, the Teflon should be recessed
1/4" (6.5 mm) from the edge. |
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3 |
All
welding shall comply with the requirements Section IX of the ASME Boiler
and Pressure Vessel code and AWS D1.1. |
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4 |
the
following items, unless otherwise noted on contract drawings, shall be in
accordance with the following: |
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- Structure shape and
plate: ASTM A-36
- Bolts/studs greater
than 1/4": ASTM A-193 Grade B7
- Bolts and nuts less
than or equal to 1/4": ASTM A-307
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5. Shipping
and Handling |
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1 |
Each
insulated support assembly shall be clearly and permanently marked with
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the support identification number. The marking shall
withstand water and fading when exposed to sun light. |
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2 |
The
support marking number should be placed in a location where it is visible
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before and after installation. |
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3 |
Supports
are to shipped in either reinforced cardboard or strap board crated with |
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a cover. Each container shall be clearly marked with a
unique number. All supports shall be individually wrapped by
plastic sheets. |
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4 |
Each
container shall have 2 copies of the packing slip. One is placed inside
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the other is taped on the outside. |
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5 |
Prior to
installation, the supports will be stored in a dry covered area to avoid
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exposure to sunlight, rain and moisture. |
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6. Extent
of work |
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1 |
Work
included |
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Furnish the
insulated pipe support assembly, encompassing the insulating materials,
metal jacket, fabricating steel housing, guide clips, associated hardware
including clamps, bolts and nuts, screws, slide plates and other
components that may be required to make a complete assembly. |
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2 |
Work not
included: |
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- Structural steel
parts which are not integral parts of the insulated pipe support assembly.
- Receiving, unloading
and installing of the insulated pipe supports.
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