ASTM C945-81(2000)

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

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-Dec-1999
• ICS: 83.100 - Cellular materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.40 - Insulation Systems

Relations

• Replaces: ASTM C945-81(1993) - Standard Practice for Design Considerations and Spray Application of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels
• Effective Date: 01-Jan-2000
• Replaced By: ASTM C945-05 - Standard Practice for Design Considerations and Spray Application of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels
• Effective Date: 01-Sep-2005
• 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-Jan-2000

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C945–81 (Reapproved 2000)
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 (e) indicates an editorial change since the last revision or reapproval.
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1. Scope “Anchor Pattern Standard”
2.4 National Association of Corrosion Engineers Standard:
1.1 This practice concerns itself with the substrate prepara-
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TM-01-70 Visual Surface Preparation Panels
tion and priming, the selection of the rigid cellular polyure-
thanesystem,andtheprotectiveinsulationcoatingsforoutdoor
3. Terminology
service equipment.
3.1 Definitions—Definitions included in Terminology
NOTE 1—For the purpose of this practice, polyurethane is defined to
C168, Definitions D883, and Abbreviations D1600 apply to
mean either polyurethane or polyisocyanurate and is hereafter referred to
the terms used in this standard.
as “PUR/PIR.”
3.2 Definitions of Terms Specific to This Standard:
1.2 Thevaluesgivenininch-poundaretoberegardedasthe
3.2.1 blasting—the process of cleaning surfaces by use of
standard. The values given in parentheses are for information
abrasiveparticlespropelledathighvelocityuponthesurfaceto
only.
be cleaned.
1.3 This standard may involve hazardous materials, opera-
3.2.2 coatings/coverings—ultraviolet ray-absorbing and
tions, and equipment. This standard does not purport to
water-shedding protective materials applied over the urethane
address all of the safety problems associated with its use. It is
foam.
the responsibility of the user of this standard to establish
3.2.3 density:
appropriate safety and health practices and determine the
3.2.3.1 in-place density— the weight per unit volume of the
applicability of regulatory limitations prior to use.
cross section of foam from substrate to exposed surface,
including all skins (or surfaces).
2. Referenced Documents
3.2.3.2 core density—theweightperunitvolumeofasingle
2.1 ASTM Standards:
layer of foam excluding top and bottom skins or (if present)
C168 Terminology Relating to Thermal Insulating Materi-
interlayer skins.
2
als
3.2.4 foam system—appropriate formulations of two liquid
3
D883 Terminology Relating to Plastics
components, polyisocyanate, or A side, and polyol, or B side,
D1600 Terminology for Abbreviated Terms Relating to
for intended applications.
3
Plastics
3.2.5 ignition barrier—cement plaster or equivalent
D2200 PictorialSurfacePreparationStandardsforPainting
coating/covering providing a resistance to ignition of the foam
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Steel Surfaces
insulation acceptable to the concerned building or fire depart-
2.2 American National Standards:
ment(s), or both. (Designated UL test is optional.)
Z87.1 Practice for Occupational and Educational Eye and
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4. Significance and Use
Face Protection
2.3 Clemtex Limited Standard:
4.1 This practice facilitates the selection and application of
an insulation system for use at service temperatures be-
tween−30 and+107°C (−22 and+225°F). Although the
successful installation of spray-applied PUR/PIR is influenced
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
by many factors, this practice treats those four areas found to
Insulation and is the direct responsibility of Subcommittee C16.40 on Insulation
Systems.
be of major importance:
Current edition approved Feb. 27, 1981. Published October 1981.
(1) Substrate preparation,
2
Annual Book of ASTM Standards, Vol 04.06.
3
Annual Book of ASTM Standards, Vol 08.01.
4
Annual Book of ASTM Standards, Vol 06.02.
5 6
Available from American National Standards Institute, 11 West 42nd Street, Available from Clemtex Ltd., P.O. Box 15214, Houston, TX 77020.
7
13th Floor, New York, NY 10036. AvailablefromtheNationalAssociationofCorrosionEngineers,1440S.Creek
Dr., Houston, TX 77084.
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C945–81 (2000)
(2) Substrate priming, standard. Blast-cleaned surface acceptance will be by one or
(3) Insulation application, and more of the following visual comparison methods:“ Anchor
(4) Protective coatings. Pattern Standards” NACE Visual Surface Preparation Panels
4.2 Abrasive blasting, primer application, spray application (Standard TM-01-70), and Pictorial D2200.
of the insulation, and protective coating application each 6.2 All welding, burning, etc., shall be completed prior to
contribute their unique health and safety hazards to the job site the blasting operation.
and will be dealt with
...