ASTM F1973-99
(Specification)Standard Specification for Factory Assebled Anodeless Risers and Transition Fittings in Polyethylene (PE) Fuel Gas Distribution Systems
Standard Specification for Factory Assebled Anodeless Risers and Transition Fittings in Polyethylene (PE) Fuel Gas Distribution Systems
SCOPE
1.1 This specification covers requirements and test methods for the qualification of factory assembled anodeless risers and transition fittings, in sizes through NPS 8, for use in polyethylene (PE) gas distribution systems.
1.2 The test methods described are not intended to be routine quality control tests.
1.3 The values given in parentheses are for informational purposes only.
1.4 Throughout this specification footnotes are provided for informational purposes and shall not be considered as requirements of this specification.
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Designation: F 1973 – 99 An American National Standard
Standard Specification for
Factory Assembled Anodeless Risers and Transition
Fittings in Polyethylene (PE) Fuel Gas Distribution Systems
This standard is issued under the fixed designation F 1973; 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 ANSI/ASME B1.20.1 Pipe Threads, General Purpose
(inch)
1.1 This specification covers requirements and test methods
ANSI B 16.5 Steel Pipe Flanges, Flanged Fittings
for the qualification of factory assembled anodeless risers and
2.4 ASME Standard:
transition fittings, in sizes through NPS 8, for use in polyeth-
ASME Boiler and Pressure Vessel Code
ylene (PE) gas distribution systems.
2.5 API Standard:
1.2 The test methods described are not intended to be
API 1104 Standard for Welding Pipelines and Related
routine quality control tests.
Facilities
1.3 The values given in parentheses are for informational
2.6 UL Standard:
purposes only.
UL 360 Flexible Metal Hose
1.4 Throughout this specification footnotes are provided for
2.7 PPI Standard:
informational purposes and shall not be considered as require-
PPI TR-4 Hydrostatic Design Bases and Maximum Recom-
ments of this specification.
mended Design Stresses for Thermoplastic Piping Mate-
2. Referenced Documents rials
2.1 ASTM Standards:
3. Terminology
A 53 Specification for Welded and Seamless Steel Pipe
3.1 The gas industry terminology used in this specification
A 513 Specification for Electric-Resistance-Welded Carbon
is in accordance with ANSI B31.8 or the United States CFR 49
and Alloy Steel Mechanical Tubing
3 Part 192, unless otherwise indicated.
D 638 Test Method for Tensile Property of Plastics
3.1.1 The term “pipe” used herein refers to both “pipe” and
D 1600 Abbreviations of Terms Relating to Plastics
“tubing” unless specifically stated otherwise.
D 2513 Specification for Thermoplastic Gas Pressure Pipe,
3.1.2 The term “gas” used herein refers to any fuel gas
Tubing and Fittings
unless specifically stated otherwise.
E 515 Test Method for Leaks Using Bubble Emission Tech-
3.2 Definitions—Definitions are in accordance with Defini-
niques
tions F 412 unless otherwise specified. Abbreviations are in
F 412 Definitions of Terms Relating to Plastic Piping Sys-
accordance with Abbreviations D 1600 unless otherwise speci-
tems
fied.
F 1588 Test Method for Constant Tensile Load Joint Test
3.2.1 anodeless flex riser casing—a flexible, plastic coated,
(CTLJT)
metallic, non-gas carrying, protective outer sleeve portion of an
2.2 US Government Document:
anodeless riser which is sometimes selected as an alternate to
United States Code of Federal Regulations Title 49 Part
rigid riser casings.
3.2.2 anodeless riser—a type of transition fitting which is
2.3 ANSI Standards:
designed to transport gas from an underground polyethylene
ANSI B 31.8 Gas Transmission and Distribution Piping
7 service line to above-ground steel piping. In an anodeless riser
Systems
polyethylene pipe is always the gas carrier, at least, in the
below ground section.
This specification is under the jurisdiction of ASTM Committee F-17 on Plastic
Piping Systems and is the direct responsibility of Subcommittee F17.60 on Gas.
Current edition approved May 10, 1999. Published August 1999.
Available from ASME, Three Park Ave., Codes & Standards, New York, NY
Annual Book of ASTM Standards, Vol 01.01.
10016.
Annual Book of ASTM Standards, Vol 08.01.
Annual Book of ASTM Standards, Vol 08.04. Available from American Petroleum Institute, 1220 L St., NW, Washington, DC
Annual Book of ASTM Standards, Vol 03.03. 20005.
6 10
Available from Superintendent of Documents, US Government Printing Office, Available from Underwriters Laboratories, 333 Pfingsten Rd., Northbrook, IL
Washington, DC 20402. 60062.
7 11
Available from American National Standards Institute, 11 W. 42nd St., 13th Available from Plastics Pipe Institute, Inc., 1825 Connecticut Ave., NW, Suite
Floor, New York, NY 10036. 680, Washington, DC 20009.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
F 1973
3.2.3 anodeless riser, flex design —an anodeless riser inserted into the PE piping serving as the stiffener in the area
where the rise leg is a transition fitting which is fabricated to an of transition.
anodeless flex riser casing which is field bent to form the base 3.2.17 transition fitting—a fitting that makes a transition
leg. joint between two different types of piping materials. As used
3.2.4 anodeless riser nipple—the metallic, aboveground, in this Standard, it is the transition between the PE and the
gas carrying pipe or fitting portion of an anodeless riser. metallic pipes.
3.2.5 anodeless riser rigid riser casing—the metallic, non- 3.2.18 transition joint—the joint at which two different
gas carrying protective outer sleeve portion of an anodeless piping materials (the PE and metal piping) are connected.
riser.
4. Materials and Manufacture
3.2.6 anodeless riser, rigid, straight and prebent—an an-
odeless riser which is produced straight or factory prebent,
4.1 General:
usually 90°, thus defining rise leg and base leg dimensions.
4.1.1 All materials of the fitting shall meet the performance
3.2.7 base leg—the steel horizontal portion of an anodeless
requirements of this specification. Specific materials refer-
riser measured from the centerline of vertical.
enced in this section are common materials used in these types
3.2.8 Category 1—a transition joint which provides for
of products. Alternate materials proven to provide equal or
pressure tightness and resistance to end loads sufficient to
better performance are acceptable.
cause no less than 25 % elongation of the PE piping as
4.2 Casings and Nipples:
described in this standard.
4.2.1 Rigid riser casings shall be constructed of Specifica-
3.2.9 Category 3—a transition joint which provides for
tion A 53, Specification A 513 or equivalent metallic materials
pressure tightness and resistance to end loads greater than the
with a minimum nominal 0.065 in. (1.65 mm) wall thickness
maximum thermal stress that would be produced by a tempera-
within the allowable tolerance ranges of the applicable metallic
ture change of 100°F (55°C).
piping specification.
3.2.10 grade level marking—a marking, tape or label ap-
4.2.2 Flex riser casings shall be constructed of plastic coated
plied to the riser to identify the point at which the transition
flexible metallic tubing providing a crush strength of not less
from PE gas carrier to metallic gas carrier occurs. This marking
than 1000 lbs. When tested in accordance with UL 360, section
assists the installer in determining the grade level of the
9.1. The flex shall also be capable of withstanding a tensile pull
installation.
of 300 lbs force without breaking or unwinding.
3.2.11 insert stiffener—a rigid, non-split, solid wall tube
4.2.3 Riser nipples shall be constructed of Specification
which is inserted into the polyethylene piping to support
A 53, or equivalent, steel pipe with a minimum of schedule 40
compression loads in the area of the transition joint.
wall thickness.
3.2.12 joint—the location at which two or more pieces of
4.2.4 All burrs on metal components, which could damage
pipe or a pipe and a fitting are connected.
the PE piping, shall be removed prior to insertion of the PE
3.2.13 MAOP—the maximum allowable operating pressure
piping so as to prevent any damage to the PE gas piping.
of the fuel gas piping system, in psig, as determined in
Alternately, all such burrs shall be suitably covered with a
accordance with US DOT CFR, Title 49, Part 192.121 and as
protective device such as an ID plastic sleeve, to preclude any
represented in the following:
damage to the PE gas piping.
4.3 Polyethylene Pipe:
MAOP 5 P 5 2 3 S /~R–1!3 f (1)
D
4.3.1 Polyethylene pipe shall comply with the requirements
where:
of Specification D 2513.
S = The PE materials’ HDB as published in the Plastics
4.4 Elastomers:
Pipe Institute PPI TR 4 publication,
4.4.1 Gas sealing elastomeric components shall be of mate-
R = The pipe’s dimension ratio determined by dividing the
rials compatible with all components of the fitting and the
pipe’s specified nominal outside diameter by the pipes
materials of the pipes being joined, and shall be resistant to fuel
specified nominal wall thickness, and
gases.
f = the design (derating) factor for thermoplastic fuel gas
D
4.5 Specifications outlining the physical and chemical prop-
piping as set by the authority having jurisdiction. In
erties of all fitting materials shall be available from the fitting
the United States the design factor is cited in CFR
manufacturer upon request.
Title 49 Part 192.121.
3.2.14 rise leg—the vertical portion of an anodeless riser
5. Dimensions, Mass, and Permissible Variations
measured from the centerline of horizontal.
5.1 Because of the varying designs, the actual spread of
3.2.15 service line—a fuel gas distribution line which trans-
dimensions is quite different from manufacturer to manufac-
ports gas from a common source of supply (gas main) to the
turer. A table of dimensions and tolerances encompassing these
customer piping.
differences would be meaningless and without value and,
3.2.16 spigot—a rigid profiled solid wall metallic tube,
therefore, are omitted from this specification.
12 13
Anodeless flex risers usually require a riser bracket attached to a rigid Materials used in components of the fitting that will be in long term contact
supporting member to avoid meter set loads from being transmitted to the with gas should be demonstrated by testing or history of successful usage not to be
polyethylene service line. adversely affected.
F 1973
6. Design Qualification Re
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