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ASTM C762-86(1994)e1

(Practice)

Practice for Application of Spray-Applied Fibrous Thermal Insulation for Elevated Temperatures (Withdrawn 1999)

Practice for Application of Spray-Applied Fibrous Thermal Insulation for Elevated Temperatures (Withdrawn 1999)

SCOPE
1.1 This practice covers the application recommendations for spray-applied fibrous insulations consisting of uniform mixtures of thermally resistant binders and inorganic fibrous materials for use on substrates operating at elevated temperatures above 100°F (38°C).  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

General Information

Status
Withdrawn
Publication Date
31-Dec-1993
Withdrawal Date
09-Mar-1999
ICS
27.220 - Heat recovery. Thermal insulation
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.23 - Blanket and Loose Fill Insulation
Current Stage
Ref Project

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ASTM C762-86(1994)e1 - Practice for Application of Spray-Applied Fibrous Thermal Insulation for Elevated Temperatures (Withdrawn 1999)ASTM C762-86(1994)e1 - Practice for Application of Spray-Applied Fibrous Thermal Insulation for Elevated Temperatures (Withdrawn 1999)
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ASTM C762-86(1994)e1 - Practice for Application of Spray-Applied Fibrous Thermal Insulation for Elevated Temperatures (Withdrawn 1999)
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Standards Content (Sample)


W 0759510 0549786 O33
AMERICAN SOCIETY FOR TESTING AND MATERIALS
[# Designation: C 762 - 86 (Reapproved 1994)‘’
1916 Race St Philadelphia, ?a 19103
Reprinted from the Annual Book of ASTM Standards Copyright ASTM
If not listed in the current combined indew, will appear in the next edition
Standard Practice for
Application of Spray-Applied Fibrous Thermal Insulation for
Elevated Temperatures’
This standard is issued under the fixed designation C 762; 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 4. Significance and Use
1.1 This practice covers the application recommendations 4.1 The purpose of this practice is to provide standard
for spray-applied fibrous insulations consisting of uniform application procedures, specifically regarding surface prepa-
mixtures of thermally resistant binders and inorganic fibrous rations, general sprayed fiber techniques, reinforcement and
materials for use on substrates operating at elevated temper- mechanical supports, and finish applications and limitations,
atures above 100°F (38°C). and to provide common precautions necessary to avoid
1.2 The values stated in inch-pound units are to be application and performance difficulties.
regarded as the standard. The values given in parentheses are 4.2 When thermal insulations are not applied in accor-
for information only. dance with prescribed and proven procedures, poor adhesion
1.3 This standard does not purport to address all of the and appearance often occur. The various sections of this
safety concerns, if any, associated with its use. It is the recommended practice explain certain methods suitable for
responsibility of the user of this standard to establish appro- obtaining optimum results with spray-applied fibrous ther-
priate safety and health practices and determine the applica- mal insulation.
bility of regulatory limitations prior to use. 4.3 This practice is only a guide. The requirements herein
discussed are general in nature and considered practical.
2. Referenced Documents
They are not intended as specific recommendations.
2.1 ASTM Standards:
5. Apparatus, Utilities, and Operational Requirements
C 168 Terminology Relating to Thermal Insulating Mate-
rials2
5.1 Application Machine and Related Spray Equipment-
C 720 Specification for Spray-Applied Fibrous Thermal
The insulation shall be applied with manufacturer-approved
Insulation for Elevated Temperature’
spray application machines, spray nozzles, and other neces-
2.2 Other Documents:
sary equipment, in strict accordance with manufacturer’s
Occupational Safety and Health Act (OSHA), current instructions and recommendations.
issue3 5.2 Utilities and Operational Requirements-Unless oth-
erwise specified, the following services are normally provided:
3. Terminology
5.2.1 Electricity-220 V, 60 A.
3.1 Definitions-See Terminology C 168. 5.2.2 Water-4 gal (15 L)/min at 60 psi (4.1 atm) (414
3,l.l high-temperature substrates-those substrates which kPa) at the application level.
are at temperatures above 2 12’ F (100’ C) during application 5.2.3 Air-10 ft3 (0.28 m3)/min at 100 psi (6.8 atm) (689
of spray-applied fibrous thermal insulations.
kPa).
3.1.2 overspray-that portion of material from a spray- 5.2.4 Illumination-Sufficient illumination shall be pro-
pattern not adhering to intended substrates. vided for proper application.
3.1.3 spray-applied fibrous thermal insulation-material
5.2.5 Ventilation-Sufficient air circulation must be pro-
applied by pneumatic conveyance in a dry state and then vided to reduce any accumulated dust during application
wetted with an atomizing liquid at the spray nozzle. and to allow adequate drying of applied insulation after
3.1.4 spray liquid-usually potable water or mixes of application.
water-soluble adhesives and water. 5.2.6 Prolective Equipment-Current OSHA regulations
3.1.5 spray nozzle-a tube with a liquid atomizing unit shall apply. As a guide, personnel working within 15 ft (4.6
attached to intermix fibers and liquid. These nozzles can be m) of the spraying or feeding operation shall wear approved
produced to operate with or without compressed air. masks, and goggles or face shields, if desired.
3.1.6 tamping insulation-procedure by which sprayed 5.2.7 Adhesives-Adhesives, when used, shall be in accor-
insulations are flattened with a tool to achieve a desired dance with manufacturer’s recommendations.
uniform thickness or pleasing appearance. 5.2.8 Reinforcement-Pins, studs, and other attachments,
when used, shall be secured to substrates prior to application
of insulation.
I This practice is under the jurisdiction of ASTM Committee C-16 on Thermal
5.2.9 Windbreaks-As necessary, in order to minimize
Insulation and is the direct responsibility of Subcommittee C16.23 on Blanket and
overspray, provide windbreaks within the application area.
Loose Fill insulation.
Current edition approved March 27, 1986. Published May 1986. Originally
published as C 762 - 73. Last previous edition C 762 - 73 (1980).
6. Materials
Annual Book of ASTM Siandards, Vol 04.06.
Available from OSHA, 200 Constitution Ave., NW, Washington, DC 20210. 6.1 The fibrous thermal insulations shali consist of min-
= 0759530 05qï787 T7T H
I-lelded pin of specified
gage shown in place
Sprayed fibrous insulation
untamped
Base
UNTAMPED SPRAYED INSULATION
1/4 in. n to be
(6 mm) pi
clip
snipped at top of
in. by 4 in
Speed cl ip with 4
(inn by 100 mm) h ardware
cloth.
Sprayed fibrous i nsulation
tamped
TAP4 P E D S PRAY E D I N S U LAT I O N
tla s t i c finish
Hard f inish
Speed clip
Hardwa re cloth
FINISHED APPLICATION
FIG. 1 Application Technique for Mechanical Support Using Pins and Hardware Cloth
eral or refractory fibers or both, combined with thermally be applied in accordance with manufacturer's instructions.
resistant binders in accordance with Specification C 720.
7. Application
9. Application Conditions and Limitations
7.1 The application of spray-applied thermal insulating
9.1 Application Conditions:
materials shall consist ofi 9.1.1 Surface Preparation-The surface to be treated shall
7.1.1 Fluffing the otherwise compacted fiber and metering
be clean and free of loose paint, rust, oil, grease, or any other
it through an application machine,
condition that would prevent good adhesion of the sprayed
7.1.2 Pneumatically conveying this processed fiber
fibrous thermal insulation to the substrate. Certain sub-
through a flexible hose to the fiber spray nozzle, strates, such as painted surfaces, may need adhesive in order
7.1.3 Introducing an atomized liquid as the fiber emerges to obtain an adequately adhering bond.
from the nozzle, and
9.1.2 Application Temperature-Application tempera-
7.1.4 Directing the wetted material to a substrate in an
tures must be observed. Application should not be made
even, unintempted pattern.
under ambient conditions where freezing can occur. Ice
formation within the insulation or at the substrate interface
8. Preconditions
can cause delamination.
8.1 Prior to commencing the application of spray-applied
9.1.3 Material may be applied under two temperature
fibrous thermal insulations, certain preconditions shall be of the substrate:
conditions
observed: 9.1.3.1 Temperature of substrate below 2 12" F (100' C).
8.1.1 Type of Spray Nozzle-The type of atomizing spray 9.1.3.2 High temperature substrate that is above 212" F
nozzle shall be as specified by the manufacturer. (100' C).
Atomization may be accomplished by direct water pressure, 9.1.4 When treating high temperature substrates apply a
compressed air, or by blower pressure. minimal thickness of insulation and aiiow to dry before
8.1.2 Liquid/Fiber Ratio-Normally 0.75 to 1.25 lb of application of additional insulation. This will reduce blow-
liquid per pound (0.75 to 1.25 kg per kilogram) of insulation offs and poor adhesion of the applied insulation from the
is used. Specific recommendations of the thermal insulation steam created.
manufacturer must be followed. Liquid flow tests should be 9.2 Limitations on Maximum Thickness-A maximum
made periodically to assure a proper ratio.
thickness of 2 in. (5 1 mm) shall be applied without reinforce-
8.1.3 Prewetting Surfaces-Surfaces shall be pre-wetted
ment. Applications in excess o
...

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1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM C302-13(2022)(Test Method)
Standard Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal Insulation

SIGNIFICANCE AND USE
5.1 Density measurements of preformed pipe insulation are useful in determining compliance of a product with specification limits and in providing a relative gage of product weights. For any one kind of insulation some important physical and mechanical properties, such as thermal conductivity, heat capacity, strength, etc., bear a specific relationship with its density; however, on a density basis, these properties are not directly comparable with those for other kinds of material.  
5.2 The physical dimensions of preformed pipe insulation are important quantities not only for determining the density of the pipe insulation but also for determining the conformance to specifications. The use of multilayer insulations is common, and the dimensions are necessary to ensure proper nesting of the layers.
SCOPE
1.1 This test method covers the determination of the dimensions and density, after conditioning, of preformed pipe insulation.  
1.1.1 Procedure A is applicable to sections of one-piece pipe covering or to sections of segmental pipe covering that can be joined together concentrically and measured as one-piece.  
1.1.2 Procedure B is applicable to segmental pipe covering where each section of material is measured.  
1.1.3 Procedure C is applicable to sections of one-piece pipe covering, such as soft foam or mineral wool materials, where it is possible to penetrate the material.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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