ASTM E1003-95(2000)
(Test Method)Standard Test Method for Hydrostatic Leak Testing
Standard Test Method for Hydrostatic Leak Testing
SCOPE
1.1 This test method covers the testing of components for leaks by pressurizing them inside with a liquid.
1.2 This test method can be used on piping, valves, and containers with welded or fitted sections which can be sealed at their ends and which are designed for internal pressure.
1.3 Basic procedures are described based on the type of inspection used. These procedures should be limited to finding leakage indications of 4.5 X 10 -9 mol/s (1 X 10 -4 Std cm /s) or larger.
1.4 The values stated in SI units are to be regarded as the standard.
1.5 This standard does not purport to address 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.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:E1003–95 (Reapproved 2000)
Standard Test Method for
Hydrostatic Leak Testing
This standard is issued under the fixed designation E1003; 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.
1. Scope appliedtotheliquiduntiltherequiredpressureisreached.This
pressure is held for the required time at which point the
1.1 This test method covers the testing of components for
component is inspected visually to locate leaks or the pressure
leaks by pressurizing them inside with a liquid.
on the gage is recorded to determine the components total
1.2 This test method can be used on piping, valves, and
leakage.
containerswithweldedorfittedsectionswhichcanbesealedat
4.2 The two basic procedures are described together with
their ends and which are designed for internal pressure.
methods for improving their sensitivity.
1.3 Basic procedures are described based on the type of
4.2.1 Pressure Drop Indication—This procedure is used
inspection used.These procedures should be limited to finding
−9 −4 3 2
primarily to measure total system leakage.
leakageindicationsof4.5 310 mol/s(1 310 Stdcm /s)
4.2.2 Visual Inspection for Leakage— This procedure is
or larger.
intended primarily to locate leaks.
1.4 The values stated in SI units are to be regarded as the
4.3 Ultrasonic pretesting for gross leaks is described.
standard.
1.5 This standard does not purport to address the safety
5. Personnel Qualification
concerns, if any, associated with its use. It is the responsibility
5.1 It is recommended that personnel performing leak test-
of the user of this standard to establish appropriate safety and
ing attend a dedicated training course on the subject and pass
health practices and determine the applicability of regulatory
a written examination.The training course should be appropri-
limitations prior to use.
ate for NDT level II qualification according to Recommended
2. Referenced Documents Practice No. SNT-TC-1Aof theAmerican Society for Nonde-
structive Testing or ANSI/ASNT Standard CP-189.
2.1 ASTM Standards:
E1316 Terminology for Nondestructive Examinations
6. Significance and Use
2.2 Other Documents:
6.1 This test method is useful for quality control testing and
SNT-TC-1A RecommendedPracticeforPersonalQualifica-
4 field inspection of piping systems, pipelines, valves, and
tion and Certification in Nondestructive Testing
containers that are expected to retain liquids. It is not sensitive
ANSI/ASNT CP-189 ASNT Standard for Qualification and
4 enoughforleaktestingwhentoxicorexplosivegasisexpected
Certification of Nondestructive Testing Personnel
to be retained under pressure.
3. Terminology
7. Interferences
3.1 Definitions—For definitions of terms used in this stan-
7.1 The interior and exterior welds and joints where leaks
dard, see Terminology E1316 Section E.
are often found must be free of oil, grease, flux, slag, or other
4. Summary of Test Method contaminants that might temporarily block or mask leakage.
New systems should be tested prior to painting, where practi-
4.1 Hydrostatic testing requires that a component be com-
cal.
pletely filled with a liquid, such as water. Pressure is slowly
7.2 Hydrostatic testing should not be performed before a
leak test using air or a tracer gas. The liquid test media may
This test method is under the jurisdiction of ASTM Committee E-7 on
clog small leaks causing later tests to be inaccurate.
Nondestructive Testing and is the direct responsibility of Subcommittee E07.08 on
7.3 Testliquidmustbeequaloraboveatmospheretempera-
Leak Testing.
ture or droplets will form on the outside. The minimum
Current edition approved Sept. 10, 1995. Published November 1995. Originally
temperature of the liquid should be 16°C (61°F).
published as E1003–84. Last previous edition E1003–94.
The gas temperature is referenced to 0°C. To convert to another gas reference
temperature, T , multiply the leak rate by (T +273)/273.
ref ref
Annual Book of ASTM Standards, Vol 03.03.
Available from American Society for Nondestructive Testing, 1711 Arlingate
Plaza, P.O. Box 28518, Columbus, OH 43228-0518.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E1003–95 (2000)
7.4 If the container to be tested has parts made of stainless 9.5 Leak Test:
steel, nickel, or chromium alloys, the liquid or any additives 9.5.1 At the completion of test pressure holding time,
used must have a sulfur and halogen content of less than 50 examine the system for leakage. Examination for leakage shall
ppm of each. If water is used as a test fluid it should be be made of all accessible joints and connections, attachment
deionized. welds where practical, and weep holes for paddings and
7.5 To avoid brittle fracture, the test pressure must not be attachments.Also inspect the area around inaccessible leakage
applied until the metal and the test fluid are approximately the sites.
same temperature. The metal should be a minimum of 16°C 9.5.2 Theinspectorshallcircleallaccessibleleaksfoundon
(61°F) prior to the application of pressure. the equipment using a nondeleterious marker. The magnitude
7.6 Ifatestliquidotherthanwaterisused,theliquid’sflash of leak shall be described in terms of: damp or moist area,
point should be 93°C (200°F) or above. drops per minute or steady stream.
7.7 If plastic parts are used in the test container, the fluid 9.6 Depressurizing—After inspection release the pressure
should not promote stress cracking or softening on the plastic. slowly. The air vents need to be opened during draining to
7.8 When the test container has carbon steel components, a admit air and prevent collapsing of the test system.
rust inhibitor should be used.
10. Pressure Drop Method
8. Apparatus
10.1 Pressurize the system in accordance with Section 8.
8.1 Pressure Gage—The gage must be able to withstand
10.2 After reaching full pressure check the system to make
normal test pressures and be accurate enough to record small
sure all trapped air has been removed.
pressuredrops.Pressuregagesshouldbecalibratedbeforeeach
10.3 Disconnect the pressure pump and allow the pressure
test.Thegagemustbeaccuratetowithin1%offullscale.The
in the system to stabilize for a period of 10 min or 5% of the
gage must read at least 1.5 3but not more than 4 3the
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.