ASTM D1998-13
(Specification)Standard Specification for Polyethylene Upright Storage Tanks
Standard Specification for Polyethylene Upright Storage Tanks
ABSTRACT
This specification covers flat-bottom, upright, cylindrical tanks molded in one-piece seamless construction by rotational molding. The tanks are molded from polyethylene for above ground, vertical installation and are capable of containing aggressive chemicals at atmospheric pressure. This specification does not cover the design of vessels intended for use at pressures other than atmospheric pressure. Furthermore, this specification does not cover the design of portable tanks and is not for vessels intended for use with liquids heated above their flash points in continuous service. Special design considerations not covered in this specification shall be given to vessels subject to superimposed mechanical forces, such as seismic forces, wind load or agitation; to vessels subject to service above specified temperature; and vessels subject to specified superimposed pressure of water. Low-temperature impact test shall be performed on rotational-molded polyethylene tanks. The test method is used on tanks molded from both the crosslinked and non-crosslinked polyethylenes. Dart drop impact test shall be performed to determine the quality of the tank. O-xylene-insoluble fraction or gel test shall be performed on crosslinked polyethylene. Visual inspection and water test shall also be performed on the samples.
SCOPE
1.1 This specification covers flat-bottom, upright, cylindrical tanks molded in one-piece seamless construction by rotational molding. The tanks are molded from polyethylene for above ground, vertical installation and are capable of containing aggressive chemicals at atmospheric pressure. Included are requirements for materials, properties, design, construction, dimensions, tolerances, workmanship and appearance. Tank capacities are from 1900 L (500 gal) up.
1.2 This specification does not cover the design of vessels intended for use at pressures other than atmospheric pressure. Furthermore, this specification does not cover the design of portable tanks. It is also not for vessels intended for use with liquids heated above their flash points, or temperatures above 66°C (150°F) for Type I tanks and 60°C (140°F) for Type II tanks for continuous service. NFPA Standards 30 and 31 shall be consulted for installations that are subject to the requirements of these standards.
1.3 Special design considerations not covered in this specification shall be given to vessels subject to superimposed mechanical forces, such as seismic forces, wind load or agitation; to vessels subject to service temperature in excess of 23°C (73.4°F); and vessels subject to superimposed pressure exceeding 25.4 cm (10 in.) of water or 2.5 × 10−3 MPa (0.36 psi).
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. Note 1—ISO 13341:2005+A1:2011 and ISO 13575:2012 are similar, but not equivalent to this standard.
1.5 The following precautionary caveat pertains only to the test methods portion, Section 11, of this specification: 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:D1998 −13
StandardSpecification for
1
Polyethylene Upright Storage Tanks
This standard is issued under the fixed designation D1998; 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* of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
1.1 This specification covers flat-bottom, upright, cylindri-
tions prior to use.
cal tanks molded in one-piece seamless construction by rota-
tional molding. The tanks are molded from polyethylene for
2. Referenced Documents
above ground, vertical installation and are capable of contain-
2
2.1 ASTM Standards:
ingaggressivechemicalsatatmosphericpressure.Includedare
D618Practice for Conditioning Plastics for Testing
requirements for materials, properties, design, construction,
D883Terminology Relating to Plastics
dimensions, tolerances, workmanship and appearance. Tank
D1693Test Method for Environmental Stress-Cracking of
capacities are from 1900 L (500 gal) up.
Ethylene Plastics
1.2 This specification does not cover the design of vessels D2837Test Method for Obtaining Hydrostatic Design Basis
intended for use at pressures other than atmospheric pressure.
forThermoplasticPipeMaterialsorPressureDesignBasis
Furthermore, this specification does not cover the design of for Thermoplastic Pipe Products
portable tanks. It is also not for vessels intended for use with
D3892Practice for Packaging/Packing of Plastics
liquids heated above their flash points, or temperatures above D4703Practice for Compression Molding Thermoplastic
66°C (150°F) for Type I tanks and 60°C (140°F) for Type II Materials into Test Specimens, Plaques, or Sheets
tanks for continuous service. NFPA Standards 30 and 31 shall E691Practice for Conducting an Interlaboratory Study to
be consulted for installations that are subject to the require- Determine the Precision of a Test Method
ments of these standards. F412Terminology Relating to Plastic Piping Systems
2.2 OSHA Standard:
1.3 Special design considerations not covered in this speci-
29 CFR 1910.106 Occupational Safety and Health
fication shall be given to vessels subject to superimposed
3
Administration, Flammable and Combustible Liquids
mechanical forces, such as seismic forces, wind load or
2.3 ANSI Standard:
agitation; to vessels subject to service temperature in excess of
4
B-16.5Pipe Flanges and Flanged Fittings
23°C (73.4°F); and vessels subject to superimposed pressure
−3
2.4 NFPA Standards:
exceeding 25.4 cm (10 in.) of water or 2.5×10 MPa (0.36
5
30Flammable and Combustible Liquid Code
psi).
5
31Installation of Oil Burning Equipment
1.4 The values stated in SI units are to be regarded as the
6
2.5 ISO Standards:
standard. The values given in parentheses are for information
ISO 13341:2005+A1:2011Static Thermoplastic Tanks for
only.
theAboveGroundStorageofChemicals–BlowMoulded
NOTE 1—ISO 13341:2005+A1:2011 and ISO 13575:2012 are similar, or Rotationally Moulded Polyethylene Tanks – Require-
but not equivalent to this standard.
ments and Test Methods
1.5 The following precautionary caveat pertains only to the
test methods portion, Section 11, of this specification: This
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
standard does not purport to address all of the safety concerns,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
if any, associated with its use. It is the responsibility of the user
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from Occupational Safety and Health Administration (OSHA), 200
Constitution Ave., NW, Washington, DC 20210.
1 4
This specification is under the jurisdiction of ASTM Committee D20 on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Plastics and is the direct responsibility of Subcommittee D20.19 on Film, Sheeting, 4th Floor, New York, NY 10036.
5
and Molded Products (Section D20.15.01). Available from National Fire Protection Association (NFPA), 1 Batterymarch
Current edition approved Oct. 1, 2013. Published October 2013. Originally Park, Quincy, MA 02269-9101.
6
approved in 1991. Last previous edition approved in 2006 as D1998-06. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D1998-13. 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1998 − 06 D1998 − 13
Standard Specification for
1
Polyethylene Upright Storage Tanks
This standard is issued under the fixed designation D1998; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers flat-bottom, upright, cylindrical tanks molded in one-piece seamless construction by rotational
molding. The tanks are molded from polyethylene for above ground, vertical installation and are capable of containing aggressive
chemicals at atmospheric pressure. Included are requirements for materials, properties, design, construction, dimensions,
tolerances, workmanship and appearance. Tank capacities are from 1900 L [500 gal](500 gal) up.
1.2 This specification does not cover the design of vessels intended for use at pressures other than atmospheric pressure.
Furthermore, this specification does not cover the design of portable tanks. It is also not for vessels intended for use with liquids
heated above their flash points, or temperatures above 66°C [150°F](150°F) for Type I tanks and 60°C [140°F](140°F) for Type
II tanks for continuous service. NFPA Standards 30 and 31 shall be consulted for installations that are subject to the requirements
of these standards.
1.3 Special design considerations not covered in this specification shall be given to vessels subject to superimposed mechanical
forces, such as seismic forces, wind load or agitation; to vessels subject to service temperature in excess of 23°C [73.4°F];(73.4°F);
−3
and vessels subject to superimposed pressure exceeding 25.4 cm [10 in.](10 in.) of water or 2.5 × 10 MPa [0.36 psi].(0.36 psi).
1.4 The values stated in SI units are to be regarded as the standard. The values given in bracketsparentheses are for information
only.
NOTE 1—There is no similar or equivalent ISO ISO 13341:2005+A1:2011 and ISO 13575:2012 are similar, but not equivalent to this standard.
1.5 The following precautionary caveat pertains only to the test methods portion, Section 11, of this specification: 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D1693 Test Method for Environmental Stress-Cracking of Ethylene Plastics
D2837 Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for
Thermoplastic Pipe Products
D3892 Practice for Packaging/Packing of Plastics
D4703 Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
F412 Terminology Relating to Plastic Piping Systems
2.2 OSHA Standard:
3
29 CFR 1910.106 Occupational Safety and Health Administration, Flammable and Combustible Liquids
2.3 ANSI Standard:
4
B-16.5 Pipe Flanges and Flanged Fittings
1
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials
(Section D20.15.01).
Current edition approved Sept. 1, 2006Oct. 1, 2013. Published October 2006October 2013. Originally approved in 1991. Last previous edition approved in 20042006 as
D1998 - 04.D1998 - 06. DOI: 10.1520/D1998-06.10.1520/D1998-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Occupational Safety and Health Administration (OSHA), 200 Constitution Ave., NW, Washington, DC 20210.
4
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1998 − 13
2.4 NFPA Standards:
5
30 Flammable and Combust
...
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