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Cryogenic (Cold) Supports |
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General information |
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Developed to
support cold
piping with applications ranging from chilled water to liquefied natural
gas. The qualified service temperature is between -425 º F (-253 º C)
and 275 º F (135 º C). These 'cold' supports serve the following benefits:
- Prevents the formation of condensation on
and around 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.
- Prevents the use and welding of high cost
of alloy supports to alloy piping.
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Cold
Product Lines |
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- Pre-insulated pipe shoes
- Anchors and Guides
- Isolation blocks
- Micarta blocks, Sleeves and washers
- Polyurethane foams of 6 lb., 8 lb., 10
lb., 20 lb. and 30 lb. density
- 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 condensation, and associated
field corrosion problems.
- 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.
- Eliminates tedious selection of metal to
metal type supports at low temperature with reduced allow stress
levels.
- 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.
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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 |
INSUL-GUIDE |
90
º RADIAL |
SINGLE LAYER |
| IS-100 |
| IG-90-SLR |
| IG-90-SLS |
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| DOUBLE LAYER |
IG-90-DLR |
| 180
º RADIAL |
SINGLE LAYER |
IG-180-SLR |
| DOUBLE LAYER |
IG-180-DLR |
| RESTING |
FLAT
SURFACE |
360
º RADIAL |
| CF-1000 |
| CF-2000 |
| CF-4000 |
| CF-4100 |
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| 180
º RADIAL |
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| ROLLER |
360
º RADIAL |
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| 180
º RADIAL |
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| SLIDING |
LATERAL TRAVEL
+ - 2" |
AXIAL TRAVEL +
- 1.5" |
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| AXIAL TRAVEL +
- 4.5" |
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| LATERAL TRAVEL
VARIABLE |
AXIAL TRAVEL +
- 1.5" |
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| AXIAL TRAVEL +
- 4.5" |
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| ANCHOR |
BOLTED ANCHOR |
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| ANCHOR WITH
GAP |
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| ANCHOR CLIPS |
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| STRUCTURAL
GUIDE |
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| INSUL-CERT
ANCHOR |
CA-5000
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| VERTICAL
RESTRAINT |
CA-6000
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| GUIDED |
GUIDE CLIPS |
AXIAL TRAVEL +
- 1.5" |
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| AXIAL TRAVEL +
- 4.5" |
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| STRUCTURAL
GUIDE |
AXIAL TRAVEL +
- 1.5" |
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| AXIAL TRAVEL +
- 4.5" |
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| ANGLE GUIDE |
AXIAL TRAVEL +
- 1.5" |
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| AXIAL TRAVEL +
- 4.5" |
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| INSULATION
BLOCK |
BLOCK |
CB-1000 |
| ASSEMBLY |
CB-2000 |
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| HANGER TYPE |
RISER CLAMP |
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| HALF CLAMP |
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| BOLTED CLAMP |
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| CLEVIS |
360
º RADIAL |
| CC-1000 |
| CC-2000 |
| CC-4000 |
| CC-4100 |
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| 180
º RADIAL |
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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 IG-90-SLR and
IG-180-SLR are constructed of high density polyurethane with a
galvanized metal pan between the foam and the support steel. Other
designs, such as CS-1000, CS-2000 have a full outer steel housing
which is clamped around the insulation unit. |
| 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. Some of these
designs include Rilco's CG-3000 and Rilco's CG-4000 |
| Anchor |
Available soon |
Insulated
supports that restrain the pipe vertically, laterally and axially.
Anchor supports are provided with guide clips which are used
to prevent lateral movement. Some typical Rilco anchors are
CA-4000 and CA-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 high density
polyurethane foam. Rilco's commonly sold models are CH-1000 and
CH-1100. |
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Support Components |
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| Type |
Photo |
Description |
| High density polyurethane
foam |
Available soon |
Best material
for cold insulation. Rilco manufactures 6, 8,10, 15, 20 and 30
lb./cubic ft. density foam. Other densities also available as
"custom" products. Denser foam are more rigid and
thermally conductive than lighter density foam. 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 barrier |
Available soon |
A paper or
plastics back sheet that is used to wrap 360º around the foam
section to protect moisture ingress. The vapor barrier is then glued
to the foam and typically overlap the joint between the two
insulation halves by at least 1 in. (25mm). However, some Rilco designs,
such as IG-90-SLR typically do not require vapor barrier. |
| Protective mastic |
Available soon |
Often times,
the pipe supports is installed on the pipe weeks or even months
before the insulation is installed. This condition leaves the ends
support exposed to the sun and rain. To protect the supports from
these elements, Rilco applies mastic on the exposed surfaces of the
supports. |
| Outer sheet metal jacket |
Available
soon |
A standard
feature on most Rilco designs. This metal jacket is wrapped
around the foam section and outside the vapor barrier. |
| Steel housing with base
components |
Available
soon |
Designed
to provide adequate support for the insulation section while
properly transferred the load to be restrained to the supporting
structure. |
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Density |
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General
Information |
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- Insulation is molded to the thickness
and layering of process line insulation to insure proper field fit per
ASTM C585.
- Rilco polyurethane foam is a carbon
dioxide blown system and contains NO ENVIRONMENTALLY HAZARDOUS
MATERIALS.
- Design temperature ranges: -425 º F (-253 º C)
to 275 º F (135 º C).
- 95% closed cell content.
- Water absorption: 0.05 lb./cubic ft.
- Test results accurate to within +/- 10%.
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Test
results
( click here to
print this result in PDF format ) |
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| Sample |
Density |
Temperature |
Load
@Yield |
Compressive
strength @ yield |
Deformation @yield in % of
thickness |
Compressive
strength @ 2% deformation |
Compressive
strength w/5:1 safety factor |
| lb/ft³ |
kg/m³ |
Fº |
Cº |
lb. |
kg. |
psi |
kg/cm² |
psi |
kg/cm² |
psi |
kg/cm² |
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6-1 |
6.5 |
104 |
-256 |
-160 |
3249 |
1474 |
358 |
25.2 |
6.3% |
178 |
12.5 |
72 |
5.1 |
| 6-2 |
6.54 |
105 |
-256 |
-160 |
3375 |
1531 |
377 |
26.5 |
5.7% |
184 |
12.9 |
75 |
5.3 |
| 6-3 |
6.48 |
104 |
-256 |
-160 |
3150 |
1429 |
347 |
24.4 |
4.8% |
168 |
11.8 |
69 |
4.9 |
| 6-4 |
6.53 |
105 |
-256 |
-160 |
3350 |
1520 |
370 |
26.0 |
5.2% |
174 |
12.2 |
74 |
5.2 |
| 6-5 |
6.56 |
105 |
-256 |
-160 |
3525 |
1599 |
389 |
27.3 |
5.5% |
182 |
12.8 |
78 |
5.5 |
| 6A |
6.51 |
104 |
75 |
24 |
293 |
133 |
137 |
9.6 |
4.4% |
83 |
5.8 |
27 |
1.9 |
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10-1 |
10.87 |
174 |
-256 |
-160 |
2981 |
1352 |
693 |
48.7 |
7.0% |
239 |
16.8 |
139 |
9.8 |
| 10-2 |
10.85 |
174 |
-256 |
-160 |
3019 |
1369 |
755 |
53.1 |
4.5% |
273 |
19.2 |
151 |
10.6 |
| 10-3 |
10.80 |
173 |
-256 |
-160 |
3140 |
1424 |
737 |
51.8 |
7.0% |
241 |
16.9 |
147 |
10.3 |
| 10-4 |
10.80 |
173 |
-256 |
-160 |
2461 |
1116 |
575 |
40.4 |
7.0% |
209 |
14.7 |
115 |
8.1 |
| 10-5 |
10.74 |
172 |
-256 |
-160 |
2211 |
1003 |
518 |
36.4 |
6.4% |
195 |
13.7 |
104 |
7.3 |
| 10A |
10.96 |
176 |
75 |
24 |
730 |
331 |
333 |
23.4 |
6.0% |
185 |
13 |
67 |
4.7 |
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15-3 |
13.98 |
224 |
-256 |
-160 |
2640 |
1198 |
1214 |
85.3 |
5.9% |
472 |
33.2 |
243 |
17.1 |
| 15-4 |
13.99 |
224 |
-256 |
-160 |
3020 |
1370 |
1307 |
91.9 |
6.4% |
455 |
32 |
261 |
18.3 |
| 15-5 |
14.09 |
226 |
-256 |
-160 |
2327 |
1056 |
1071 |
75.3 |
5.8% |
389 |
27.3 |
214 |
15 |
| 15-6 |
13.39 |
215 |
-256 |
-160 |
2450 |
1111 |
1077 |
75.7 |
5.3% |
473 |
30.7 |
215 |
15.1 |
| 15-7 |
13.94 |
223 |
-256 |
-160 |
2450 |
1111 |
1129 |
79.4 |
5.7% |
461 |
32.4 |
226 |
15.9 |
| 15A |
14.06 |
225 |
75 |
24 |
1146 |
520 |
536 |
37.7 |
8.2% |
272 |
19.1 |
107 |
7.5 |
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20A-8 |
18.44 |
295 |
-256 |
-160 |
4400 |
1996 |
2087 |
146.7 |
4.2% |
638 |
44.9 |
417 |
29.3 |
| 20A-9 |
18.71 |
300 |
-256 |
-160 |
4380 |
1987 |
1998 |
140.5 |
7.5% |
658 |
46.3 |
400 |
28.1 |
| 20A-9 |
18.77 |
301 |
-256 |
-160 |
4020 |
1823 |
2117 |
148.8 |
8.0% |
658 |
46.3 |
400 |
28.1 |
| 20A-10 |
18.42 |
295 |
-256 |
-160 |
3710 |
1683 |
2012 |
141.4 |
6.8% |
695 |
48.9 |
402 |
28.3 |
| 20A-11 |
18.73 |
300 |
-256 |
-160 |
4050 |
1837 |
2158 |
151.7 |
8.0% |
683 |
48.0 |
432 |
30.4 |
| 20A |
18.45 |
296 |
75 |
24 |
1858 |
843 |
834 |
58.6 |
8.7% |
387 |
27.2 |
167 |
11.7 |
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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 low temperature insulated pipe supports. It is
applicable for pipes having a surface temperature ranges of -475 º F
(-281 º C) to 275 º F (135 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 seimic, water hammer
and similar conditions.
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4 |
At the
request of the owner or his designee, calculations and other related
documentation which |
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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
lugs or other welded |
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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
reports shall be |
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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
be of the same |
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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
compressive strength |
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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 -260 º F (-176 º C). |
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3 |
At the
request of the owner or his designee, a description of the basis used to
load 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 |
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ASTM D 1621, Standard Test Method for Compressive Properties
of Rigid Cellular plastics. |
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5 |
The
testing used to establish thermal conductivity properties of high density polyurethane
shall |
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comply with ASTM C 177-85, Steady State Heat Flux
Measurement and Thermal Transmission Properties by means of
the Guard Hot Plate Apparatus. |
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6 |
The load
bearing element load capacity shall be demonstrated at the piping system
design |
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temperature and load. |
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7 |
The
insulated pipe support assembly shall exert a minimum clamping force on
the pipe to assure |
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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
coefficient of friction to 0.1 |
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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 |
All
sliding surfaces shall be designed in such a manner as to limit the
coefficient of friction to 0.1 |
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for the system de |