ASTM C945-05

Standard Practice for Design Considerations and Spray Application of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels

SIGNIFICANCE AND USE
This practice facilitates the selection and application of an insulation system for use at service temperatures between − 30 and + 107°C (−22 and + 225°F). Although the successful installation of spray-applied PUR/PIR is influenced by many factors, this practice treats those four areas found to be of major importance:  
(1) Substrate preparation,
(2) Substrate priming,
(3) Insulation application, and
(4) Protective coatings.
Abrasive blasting, primer application, spray application of the insulation, and protective coating application each contribute their unique health and safety hazards to the job site and will be dealt with in more detail under their respective headings.
SCOPE
1.1 This practice concerns itself with the substrate preparation and priming, the selection of the rigid cellular polyurethane system, and the protective insulation coatings for outdoor service equipment.
Note 1--For the purpose of this practice, polyurethane is defined to mean either polyurethane or polyisocyanurate and is hereafter referred to as "PUR/PIR."
1.2 The values given in inch-pound are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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: Historical
• Publication Date: 31-Aug-2005
• ICS: 83.100 - Cellular materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.40 - Insulation Systems

Relations

• Replaces: ASTM C945-81(2000) - Standard Practice for Design Considerations and Spray Application of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels
• Effective Date: 01-Sep-2005
• Replaced By: ASTM C945-05(2012) - Standard Practice for Design Considerations and Spray Application of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels
• Effective Date: 01-Mar-2012
• Referred By: ASTM C950/C950M-08(2023) - Standard Practice for Repair of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels
• Effective Date: 01-Sep-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C945–05
Standard Practice for
Design Considerations and Spray Application of a Rigid
Cellular Polyurethane Insulation System on Outdoor Service
1
Vessels
This standard is issued under the fixed designation C945; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.3 Clemtex Limited Standard:
4
“Anchor Pattern Standard”
1.1 This practice concerns itself with the substrate prepara-
2.4 National Association of Corrosion Engineers Standard:
tion and priming, the selection of the rigid cellular polyure-
5
TM-01-70 Visual Surface Preparation Panels
thanesystem,andtheprotectiveinsulationcoatingsforoutdoor
2.5 Other Documents:
service equipment.
Safety Precautions in Handling and Spraying of PUR/PIR
NOTE 1—For the purpose of this practice, polyurethane is defined to 6,7
Systems
mean either polyurethane or polyisocyanurate and is hereafter referred to
as “PUR/PIR.”
3. Terminology
1.2 Thevaluesgivenininch-poundaretoberegardedasthe
3.1 Definitions—DefinitionsincludedinTerminologyC168,
standard. The values given in parentheses are for information
DefinitionsD883,andAbbreviationsD1600applytotheterms
only.
used in this standard.
1.3 This standard may involve hazardous materials, opera-
3.2 Definitions of Terms Specific to This Standard:
tions, and equipment. This standard does not purport to
3.2.1 blasting—the process of cleaning surfaces by use of
address all of the safety problems associated with its use. It is
abrasiveparticlespropelledathighvelocityuponthesurfaceto
the responsibility of the user of this standard to establish
be cleaned.
appropriate safety and health practices and determine the
3.2.2 coatings/coverings—ultraviolet ray-absorbing and
applicability of regulatory limitations prior to use.
water-shedding protective materials applied over the urethane
foam.
2. Referenced Documents
3.2.3 density:
2
2.1 ASTM Standards:
3.2.3.1 in-place density—theweightperunitvolumeofthe
C168 Terminology Relating to Thermal Insulation
cross section of foam from substrate to exposed surface,
D883 Terminology Relating to Plastics
including all skins (or surfaces).
D1600 Terminology for Abbreviated Terms Relating to
3.2.3.2 core density—theweightperunitvolumeofasingle
Plastics
layer of foam excluding top and bottom skins or (if present)
D2200 Practice for Use of Pictorial Surface Preparation
interlayer skins.
Standards and Guides for Painting Steel Surfaces
3.2.4 foam system—appropriate formulations of two liquid
2.2 American National Standards:
components, polyisocyanate, or A side, and polyol, or B side,
Z87.1 Practice for Occupational and Educational Eye and
for intended applications.
3
Face Protection
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
Insulation and is the direct responsibility of Subcommittee C16.40 on Insulation
Systems.
Current edition approved Sept. 1, 2005. Published October 2005. Originally
approvedin1981.Lastpreviouseditionapprovedin2000asC945–81(2000).DOI:
4
10.1520/C0945-05. Available from Clemtex Ltd., P.O. Box 15214, Houston, TX 77020.
2 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or AvailablefromtheNationalAssociationofCorrosionEngineers,1440S.Creek
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Dr., Houston, TX 77084.
6
Standards volume information, refer to the standard’s Document Summary page on Spray Polyurethane Foam Alliance (SPFA), 4400 Fair Lakes Ct, Suite 105,
the ASTM website. Fairfax, Va (website sprayfoam.org)
3 7
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., Alliance for the Polyurethane Industry (API), 1300 Wilson Blvd Suite 800,
4th Floor, New York, NY 10036. Arlington, VA 22209 (website, polyurethanes.org)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C945–05
the metal, exposure, and use.
3.2.5 ignition barrier—cement plaster or equivalent
coating/covering providing a resistance to ignition of the foam
5.1.4 Aluminum Surfaces—Degrease with appropriate sol-
insulation acceptable to the concerned building or fire depart-
vents. Coat the clean, dry surface with a recommended primer
ment(s), or both. (Designated UL test is optional.)
or coating.
5.1.5 Stainless Steel Surfaces—Degrease with appropriate
4. Significance and Use
solvents. Coat the clean, dry surface with a recommended
4.1 This practice facilitates the selection and application of
primer or coating. (Chloride-free materials are recommended
an insulation system for use at
...