ASTM C667-01
(Specification)Standard Specification for Prefabricated Reflective Insulation Systems for Equipment and Pipe Operating at Temperatures above Ambient Air
Standard Specification for Prefabricated Reflective Insulation Systems for Equipment and Pipe Operating at Temperatures above Ambient Air
ABSTRACT
This specification covers the standard for all metal prefabricated, reflective insulation systems for equipment and piping operating at temperatures above ambient in air proposed for use in nuclear power-generating plants and industrial plants. The insulation unit is a rigid, self-contained, prefabricated metal construction made of an inner and outer casing arranged to form a rigid assembly with separated air spaces between the inner and outer casing and the individual reflective liners. The reflective insulation described herein is limited to systems of insulating units, designed to fit the equipment or piping to be insulated. The units shall be manufactured from metals that are in accordance with the thermal, physical, and chemical requirements not only of the insulation as unit, but also as an assembly of units forming the insulation system.
SCOPE
1.1 This specification covers the requirements for all metal prefabricated, reflective insulation systems for equipment and piping operating at temperatures above ambient in air. Typical applications are in nuclear power-generating plants and industrial plants.
1.2 Reflective insulation is thermal insulation that reduces radiant heat transfer across spaces by the use of surfaces of high reflectance and low emittance.
1.3 The values stated in inch-pound units are to be regarded as the standard. the values given in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: C 667 – 01
Standard Specification for
Prefabricated Reflective Insulation Systems for Equipment
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and Pipe Operating at Temperatures above Ambient Air
This standard is issued under the fixed designation C 667; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope C 1061 Test Method for Thermal Transmission Properties
of Non-Homogeneous Insulation Panels Installed Verti-
1.1 This specification covers the requirements for all metal
4
cally
prefabricated, reflective insulation systems for equipment and
piping operating at temperatures above ambient in air. Typical
3. Terminology
applications are in nuclear power-generating plants and indus-
3.1 Definitions:
trial plants.
3.1.1 Terms relating to thermal insulation materials and
1.2 Reflective insulation is thermal insulation that reduces
testing are in accordance with Terminology C 168.
radiant heat transfer across spaces by the use of surfaces of
3.2 Definitions of Terms Specific to This Standard:
high reflectance and low emittance.
3.2.1 convection stops—seals used to reduce convection
1.3 The values stated in inch-pound units are to be regarded
losses.
as the standard. The values given in parentheses are provided
3.2.2 end supports—structuralmembersplacedattheendof
for information only.
a unit of insulation and fastened to both the inner and outer
1.4 This standard does not purport to address all of the
case. Their primary purpose is to increase the structural
safety concerns, if any, associated with its use. It is the
integrity of the unit.
responsibility of the user of this standard to establish appro-
3.2.3 inner case—the innermost sheet of the unit of insula-
priate safety and health practices and determine the applica-
tion (closest to the hot surface). It may perform structural
bility of regulatory limitations prior to use.
functions in addition to its thermal functions.
2. Referenced Documents 3.2.4 insulation assembly—an assembly of insulation units
arranged and secured together in a prescribed order that
2.1 ASTM Standards:
comprises the complete insulation for a vessel, pump, pipeline,
C 168 Terminology Relating to Thermal Insulating Materi-
2 or other component for a single design objective.
als
3.2.5 insulation system—a collection of insulation assem-
C 335 Test Method for Steady-State Heat Transfer Proper-
2 blies, that when secured together in a prescribed order, com-
ties of Horizontal Pipe Insulation
prises the complete insulation for a vessel, pump, pipeline, or
C 411 Test Method for Hot-Surface Performance of High-
2 other component for a single design objective.
Temperature Thermal Insulation
3.2.6 lap straps—strips that overlap a longitudinal or cir-
C 835 Test Method for Total Hemispherical Emittance of
2 cumferential joint in the insulation which aligns adjacent
Surfaces from 20 to 1400°C
insulation units and may also serve to restrict air infiltration
C 854 Test for Resistance to External Loads on Metal
3 and convection losses and to shed external falling water. They
Reflective Pipe Insulation
may be integral with one piece of the outer case or separate
C 1033 Test Method for Steady-State Heat Transfer Prop-
2
strips secured to it.
erties of Pipe Insulation Installed Vertically
3.2.7 outer case—the outermost sheet or the unit of insula-
tion (farthest from the hot surface). It usually performs
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This specification is under the jurisdiction of ASTM Committee C16 on
structural functions in addition to its thermal functions.
Thermal Insulation and is the direct responsibility of Subcommittee C16.21 on
3.2.8 penetrations—openings in a unit of insulation from
Reflective Insulation.
the cold surface through to the hot surface.
Current edition approved Nov. 10, 2001. Published December 2001. Originally
e1
published as C 667-92. last previous edition C 667-92 (1996) .
2
Annual Book of ASTM Standards, Vol 04.06.
3 4
Discontinued. See 1997 Annual Book of ASTM Standard, Vol 04.06. Discontinued. See 1994 Annual Book of ASTM Standard, Vol 04.06.
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C 667
3.2.9 reflective liners—those reflective sheets or foil inter- 5. Materials and Manufacture
posed between the inner and outer case to reflect radiant
5.1 Each insulation unit is a rigid, self-contained, prefabri-
energy, to minimize emission of radiant energy, and to restrict
cated metal construction comprised of an inner casing and an
internal convection.
outer casing, and if needed, one or more reflective liners
3.2.1
...
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