Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Plastic pipe test 1

Status
Not open for further replies.

pipe76

Mechanical
Jan 10, 2004
6
GB
Hello,

I have been reading about plastic pipes for piping systems or pipeline but I am not sure about the test I have to carry out. So far I know there are two, the simple mechanical tensile test and the hydrostatic test; however I would like to know if someone could help to answer these couple of question.

1. - What additional testing would be needed if frequent pressure fluctuations were expected?

I think it is the hydrostatic test, is it right? What does it consist in?

2. - What does test qualify fibre glass piping for long time service for oil and field fluids?

I think it is the mechanical tensile test, is it right? What does it consist in?

Best wishes,

Howard
 
Replies continue below

Recommended for you

The Plastics Pipe Institute has a large number of documents freely available online at
National and some international standards for plastic piping are listed in a 41-page document Standards For Plastics PipingTR – 5/2001,
Besides hydrostatic and other mechanical tests, there are chemical resistance tests. E.g., after 30 days immersion in ASTM Oil No. 3 at 23[sup]o[/sup]C; the change in weight must be within +0.5 % to earn an ‘A’ rating.
A selection of standards possibly useful for oil and gas piping:

American Society for Testing and Materials
100 Barr Harbor Drive
West Conshohocken, PA 19428
(610) 832-9500
Internet:
ASTM Specifications [note: standard abstracts are available at www.astm.org]
D 2310 Classification for Machine-Made Reinforced Thermosetting-Resin Pipe [includes both cyclic and static hydrostatic hoop stress designations, e.g., ‘H’ for 12,500 psi cyclic hoop stress]
D 2996 Filament-Wound “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
D 2997 Centrifugally Cast Reinforced Thermosetting-Resin Pipe
D 3517 “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pressure Pipe
D 2513 Thermoplastic Gas Pressure Piping Systems
D 2517 Reinforced Epoxy resin Gas Pressure Piping Systems
D 3754 “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Sewer and Industrial Pressure Pipe
F 423 Polytetraflouroethylene (PTFE) Plastic-Lined Ferrous Metal Pipe, Fittings, and Flanges
F 546 Specification for Perfluoro (Ethylene-Propylene) Copolymer (FEP) Plastic-Lined Ferrous Metal Pipe and Fittings
F 599 Specification for Poly (Vinylidene) (PVDC) Plastic-Lined Ferrous Metal Pipe and Fittings
D 1598 Time-to-Failure of Plastic Pipe Under Constant Internal Pressure
D 1599 Short-Time Rupture Strength of Plastic Pipe, Tubing and Fittings
D 2105 Longitudinal Tensile Properties of Reinforced Thermosetting Plastic Pipe and Tube
D 2143 Cyclic Pressure Strength of Reinforced, Thermosetting Plastic Pipe
D 2290 Apparent Tensile Strength of Ring or Tubular Plastics and Reinforced Plastics by Split Disk Method
D 2924 External Pressure Resistance of Reinforced Thermosetting-Resin Plastic Pipe
D 2925 Beam Deflection of Reinforced Thermosetting Plastic Pipe Under Full Bore Flow
D 2992 Obtaining Hydrostatic or Pressure Design Basis for “Fiberglass”(Glass-Fiber-Reinforced Thermosetting-Resin) Pipe and Fittings
D 3681 Chemical Resistance of Reinforced Thermosetting Resin Pipe in a Deflected Condition
D2122 Determining Dimensions of Thermoplastic Pipe and Fittings
F 1429 Assembly Force of Plastic Underground Conduit Joints that use Flexible Elastomeric Seals Located in the Bell
D 2517 Reinforced Epoxy Resin Gas Pressure Pipe and Fittings
D 2996 Filament-Wound “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe
D 2997 Centrifugally Cast Reinforced Thermosetting Resin Pipe
D 3517 “Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pressure Pipe
D 2105 Longitudinal Tensile Properties of Reinforced Thermosetting Resin Pipe and Tube
D 2143 Cyclic Pressure Strength of Reinforced, Thermosetting Plastic Pipe
D 2924 External Pressure Resistance of Reinforced Thermosetting Resin Pipe
D 2925 Beam Deflection of Reinforced Thermosetting Plastic Pipe Under Full Bore Flow
D 3681 Chemical Resistance of “Fiberglass”(Glass-Fiber-Reinforced Thermosetting-Resin) Pipe in a Deflected Condition
D 2992 Obtaining Hydrostatic or Pressure Design Basis for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting) Resin Pipe and Fittings
D 3567 Determining Dimensions of Reinforced Thermosetting-Resin) Pipe (RTRP) and Fittings
D 3839 Underground Installation of “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe and Reinforced Plastic Mortar Pipe
D 2310 Machine-Made Reinforced Thermosetting-Resin Pipe
F 423 Polytetrafluoroethylene (PTFE) Plastic-Lined Ferrous Metal Pipe, Fittings, and Flanges
F 491 Poly (Vinyl Fluoride) (PVDF) Plastic-Lined Ferrous Metal Pipe and Fittings
F 492 Propylene and Polypropylene (PP) Plastic-Lined Ferrous Metal Pipe and Fittings
F 546 Perfluoro (Ethylene-Propylene) Copolymer (FEP) Plastic-Lined Ferrous Metal Pipe and Fittings
F 599 Poly (Vinylidene Chloride) (PVDC) Plastic-Lined Ferrous Metal Pipe and Fittings
F 781 Perfluoro (Alkoxyalkane) Copolymer (PFA) Plastic-Lined Ferrous Metal Pipe and Fittings
F 1545 Plastic-Lined Ferrous Metal Pipe, Fittings, and Flanges
D 1598 Time-to-Failure of Plastic Pipe Under Constant Internal Pressure
D 1599 Short-Time hydraulic Failure Pressure of Plastic Pipe, Tubing, and Fittings
D 2105 Longitudinal Tensile Properties of Reinforced Thermosetting-Resin Pipe and Tube
D 2122 Determining Dimensions of Thermoplastic Pipe and Fittings
D 2143 Cyclic Pressure Strength of Reinforced, Thermosetting Plastic Pipe
D 2290 Apparent Tensile Strength of Ring or Tubular Plastics and Reinforced Plastics by Split Disk Method
D 2412 Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plat Loading
D 2444 Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (Falling Weight)
D 2586 Hydrostatic Compressive Strength of Glass-Reinforced Plastic Cylinders
D 2837 Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials
D 2924 External Pressure Resistance of Reinforced Thermosetting Resin Pipe
D 2992 Obtaining Hydrostatic or Pressure Design Basis for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe


American National Standards Institute, Inc.
11 West 42nd St.
New York, NY 10036
(212) 642-4900
Internet Address:
ANSI/ASME standards
B31.3-1996 ASME B31.3-1996, Process Piping
B31.4-1992 ASME B31.4-1992, Liquid Transportation Systems for Hydrocarbons, Liquid Petroleum Gas, Anhydrous
B31.8-1989 ASME B31.8-1995, Gas Transmission and Distribution Piping Systems

American Petroleum Institute
Publications and Distribution Section
1220 L St., NW
Washington, DC 20005
(202) 682-8000
Internet Address:
API Standards
15HR High Pressure Fiberglass Line Pipe, Second Edition, April 1, 1995
15LE Polyethylene (PE) Line Pipe, Third Edition, April 1, 1995
15LR Low Pressure Fiberglass Line Pipe, Sixth Edition, September 1, 1990 (ANSI/API Spec 15LR-1992)
15LT PVC Lined Steel Tubular Goods, First Edition, January 1, 1993
RP 5L2 Internal Coating of Line Pipe for Non-Corrosive Gas Transmission Service, Third Edition, May 31, 1987 (ANSI/API RP 5L2-1992)
RP 15 TL4 Care and Use of Fiberglass Tubulars, First Edition, October 1, 1993

Some guide manuals:

American Gas Association
400 North Capitol Street NW
Washington, DC 20001
(202) 824-9091
Plastic Pipe Manual for Gas Service
Guide for Gas Transmission and Distribution Systems


American Society of Mechanical Engineers International
United Engineering Center
345 East 47th Street
New York, NY 10017
(212) 705-7722
ASME Guide for Gas Transportation and Distribution Piping Systems
 
It sounds like you're designing piping systems using plastic pipe and need to know the testing requirements for the system. If that's the case, ASME B31.3 is probably the applicable code.

Note B31.3 also has design requirements plastic pipe systems must be held to.
 
You might also look at ISO 14692 or BS 7159 which deal specifically with fiberglass pipe.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor