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	Hydrostatic Testing Facts [Williams.com]
		Pressure testing with water, also known as hydrostatic testing, is one of the tools pipeline operators use to verify pipeline integrity.
		The test involves purging all natural gas out of the pipeline, cleaning the inside of the pipeline, filling it with water and then pressurizing the pipeline to a pressure higher than the normal operating pressure.
		If selected as the verification method, hydrostatic tests are conducted on a repeated frequency for the lifetime of the pipeline or until an alternative verification method is selected.
	www.williams.com /williamsinwashington/hydrostaticfacts.asp (359 words)

	Portable hydrostatic test pumps & testing systems. Pipe stoppers - EST
		These pumps are ideally suited for use with all EST test plugs or on a stand alone basis.
		The P-Series Hydrostatic Test Pump is a compact portable air driven diaphragm style pump.
		The Blue Max II Hydrostatic Test Pump is a slightly larger air driven diaphragm style pump that is mounted on a hand truck.
	www.expansionseal.com /html/hypg6.htm (307 words)

	Customized Hydrostatic Testers for proof testing and burst testing
		If testing is to be performed at both the lower and upper ends of scale, or if higher accuracies are required, the digital gauge is recommended.
		If testing is to be performed in the upper two thirds of scale, and 1/2% full scale accuracy is acceptable, then the analog gauge is recommended.
		Test chambers are available to protect personnel during proof or burst testing.
	hydraulictechnology.com /Customized_hydrostatic_tester_form.htm (390 words)

	Hydrostatic Test Pumps
		These hydrostatic test pumps ensure that the pipes used for transferring water and other fluids or gases are safe to use.
		Hydrostatic test pumps are also used to check old systems and repaired pipes.
		Hydrostatic test pumps are normally installed on frames which are steady and built to last.
	www.ultimatewasher.com /hydrostatic-test-pumps.htm (502 words)

	API Spec 6A Flanged Equipment Hydrostatic Test Pressure Requirements
		Test a cross-over connector upper connection at a test pressure based on the working pressure rating for the upper connection.
		For chokes having an inlet connection of a higher working pressure rating than the outlet connection, apply test pressure to the body, from the inlet connection to the body-to-bean seal point of the replaceable seat or flow bean, to the appropriate test pressure for the inlet connection.
		Test the remainder of the body, downstream from the seal point, to the appropriate test pressure for the outlet connection.
	www.woodcousa.com /q_a-r_22.htm (715 words)

	Legislative Issues - Pipeline Testimony
		Given the hydrostatic test failure of below 125% MOP, the failure on June 10th, the extent of catastrophe that is at issue, and the urbanization that has occurred surrounding the pipe in my district, communities deserve a high level of confidence that can only be achieved through hydrostatic testing.
		But hydrostatic tests are in current use for several lines in the country and are required every 5 years for intrastate pipelines in California that is over ten years old.
		I think there is some point between the 5 year requirement in California, and the 35 years the line has been sitting in the highly corrosive Northwest soil, that hydrostatic tests should be required, particularly in light of the failure of the pipe during the hydrostatic tests in Bellingham.
	www.house.gov /inslee/issues/pipeline/testimony.html (1125 words)

	Resistoflex: Pressure Testing
		If the hydrostatic test is performed at the expected operating temperature (a "hot hydrotest") then the hydrotest can constitute the first thermocycle and the recommended retorquing can occur after the pressure test.
		To perform the pneumatic leak test, begin by increasing the pressure until a gauge pressure of 25 psi is attained.
		If a hydrostatic pressure test is undesirable due to the possible chemical reactions with water and a pneumatic test in undesirable due to the potential hazards, then an alternative leak test can be used.
	www.resistoflex.com /pressure_testing.htm (618 words)

	CO2 Fire Extinguisher Hydrostatic Testing
		Testing was conducted in accordance with 49CFR and Pamphlet C-1 of the Compressed Gas Association (CGA,C-1), Methods for Hydrostatic Testing of Compressed Gas Cylinders.
		Cylinders subjected to test are immersed in a sub-surface water-jacketed enclosure to minimize danger in the event of a catastrophic breakdown under pressure.
		In the event the testing interval is changed from 5 to 12 years, no extinguisher tested in the previous 5 years would require testing for an additional 7 years.
	www.halcyon.com /NAFED/HTML/HydrotestingCO2.HTML (1107 words)

	Hydrostatic Proof Test - American Ductile Iron Pipe - ACIPCO
		As specified by AWWA C151, each pipe is subjected to a hydrostatic test of not less than 500 psi with the pipe under the full test pressure for at least 10 seconds.
		For even greater assurance of pipe quality, each 30" and larger AMERICAN Ductile Iron pipe is hydrostatically tested to 75% of yield strength of the metal, based on the nominal thickness of the pipe.
		As an example of the higher test pressures this dictates, each length of 30" diameter ductile iron pipe, Class 150 (the lightest class produced), 0.34" nominal wall, is tested to 669 psi.
	www.acipco.com /adip/pipe/hydrostatic.cfm (258 words)

	Hydrostatic
		The United States Department of Transportation (DOT) licenses companies to test such cylinders in order to insure that they are safe to use by divers, firefighters, homeowners, etc. The way in which hydrostatic testing of cylinders is done will be explained in the rest of this Webpage.
		Hydrostatic testing should be done on scuba cylinders every 5 years unless something has happened to the tank in the meantime that would indicate a need to check the tank sooner.
		Since the hydro test stretches the metal of the tank beyond what a normal fill would do, it is not recommended that the test be done more often.
	www.deep-six.com /page37.htm (1555 words)

	Hydrostatic Testing FAQs [Williams.com]
		The water obtained for use in a hydrostatic test requires the pipeline operator to obtain water use permits.
		After the test is complete, the test heads are removed and the line is welded back together, the new welds on the pipeline are x-rayed, the line is backfilled and the site is cleaned up and restored to its original condition.
		Air compressors are used to push cleaning devices through the pipeline prior to testing and used to dry the line at the end of the test.
	www.williams.com /williamsinwashington/hydrostaticfaqs.asp (463 words)

	Eichler Homes \| Pressure Tests
		The code states, "the minimum system testing pressure is a pressure equal to 1.5 times the psi rating of the pressure relief valve; the maximum test pressure is a pressure equal to 90% of the boiler test pressure as set by the manufacturer".
		This means a proper pressure test of the radiant panel tube with this boiler installed would be a minimum of 45 PSI (if the boiler has a 30 PSI pressure relief valve) and a maximum of 144 PSI (as defined by the manufacturers rating).
		Until each Hydronic Contractor agrees to standardize all testing procedures, an unnecessary burden is placed on the buyer to pay for a repair of the radiant panel when improper testing has shown the system to be leak-free and in good operational condition.
	www.radiantheat.net /eichler_pressure_tests (1775 words)

	Evacuation Plans and Procedures eTool: Fire Extinguisher Hydrostatic Testing
		Hydrostatic testing is the method used to pressure test an extinguisher's critical components (cylinder, shell, hose assembly, etc.) for leaks and structural flaws by pressurizing them with a liquid.
		The hydrostatic test described above is called the water jacket type because the cylinder is enclosed and surrounded by water during the testing process.
		Test carbon dioxide extinguishers and nitrogen or carbon dioxide cylinders used with wheeled extinguishers every five years at 5/3 of the service pressure as stamped into the cylinder.
	www.osha.gov /SLTC/etools/evacuation/portable_hydro.html (1234 words)

	HYDROSTATIC TEST PANELS (Site not responding. Last check: 2007-11-04)
		Airdive manufactures non-water jacket test panels which comply to Australian Standards in a number of configurations the most popular of which is the Hydro 8000 Hydrostatic Test Panel.
		These test units are ideally suited to testing scuba cylinders and breathing apparatus cylinders but can be utilised for testing larger bank cylinders up to 95 litres water capacity if required.
		On valve 6 of the unit, the inlet side must be toward the high pressure section of the test unit (inlet port faces towards centre of unit) with cross pipe assembly up to gauges) and the outlet port faces towards outside of case with return pipe to bottom of pump inlet.
	www.airdive.com.au /index.php?module=Website&action=Text&content=1102674990781-3541 (1326 words)

	Lab Safety Supply - EZ Facts Safety Info - Document #307, Hydrostatic Testing of SCBA Cylinders
		A hydrostatic test is the most common way in which a cylinder is checked for leaks or flaws.
		A hydrostatic test consists of filling the cylinder with a nearly incompressible liquid, usually water, and examining it for leaks or permanent changes in shape.
		In addition to the mandatory hydrostatic testing of the cylinders and the visual inspections, it is also suggested to submit cylinders for non-destructive testing in between the required hydrostatic testing.
	www.labsafety.com /refinfo/ezfacts/ezf307.htm (873 words)

	Evacuation Plans and Procedures eTool: OSHA's Fire Extinguisher Requirements
		Assure that portable fire extinguishers are hydrostatically tested whenever they show new evidence of corrosion or mechanical injury, except under the conditions listed in paragraphs (f)(2)(i)-(v) of this section.
		Assure that hydrostatic tests are performed on extinguisher hose assemblies that are equipped with a shut-off nozzle at the discharge end of the hose.
		Hydrostatically test carbon dioxide hose assemblies with a shut-off nozzle at 1,250 psi (8,620 kPa).
	www.osha.gov /SLTC/etools/evacuation/portable_required.html (1180 words)

	Displacement Pumps, Hydrostatic Test Pumps, Reciprocating Pump :: McFarland Pumps (Site not responding. Last check: 2007-11-04)
		This hydrostatic test pump is designed for both high pressure hydrostatic testing and high-pressure chemical injection applications and weighs in at a lighter 120 lbs.
		This hydrostatic test pump is engineered for both hydrostatic testing and high-pressure chemical injection applications, the Mac-26 weighs in at 175 lbs.
		The hydrostatic test pump is designed using power piston size 6", stroke length of 2", cycles/minute adjustable to 100, max input pressure at 100 psi, and a power gas max cons of 51 SCFM.
	www.mcfarlandpump.com /airgas.htm?trackcode=bizcom&kc=SrXBIDsgKfawrdX6ZsMqyodUJJk0iTmBnDN02khI (671 words)

	Stationary Valve Test Stands
		Hydrostatic tests up to 6,000 PSI with optional air and Nitrogen tests.
		Capable of testing 1/2" to 4" flanged and socket weld valves with adapter seal plates.
		Hydrostatic test pressures up to 5,000 PSI depending on sizes of valves tested, can perform upstream, downstream and shell tests.
	www.barbeetesters.com /stat1.htm (983 words)

	Hydro-Test Unit - Electric Hydrostatic Pressure Test Unit
		The Hydro-Test Unit is a trigger operated electric test pump, complete with 10' discharge hose, and carrying case.
		Hydrostatic testing is the best and safest way to pressure test piping systems, and the Hydro-Test Unit is the simplest and most convenient way to do so.
		The test cap adapters quickly and easily seal the ends of the loop and have quick connections to the supply and discharge adapters.
	www.geothermalsupply.com /hydrotest.htm (370 words)

	DSW: Draft NPDES General Permit for Hydrostatic Test Water
		Ohio EPA is public noticing a draft general permit that may potentially provide coverage to hydrostatic test water and water supply system water discharges of short duration from facilities in the State of Ohio.
		Hydrostatic test water means water placed in pipelines, tanks, etc. (new/unused or used) and raised to greater than atmospheric pressure in order to check for leaks and/or the structural integrity of these facilities.
		Discharges of hydrostatic test water generally take place from new facilities, unused facilities, and used facilities that have been used for the transportation or storage of natural gas, crude oil, or liquid or gaseous petroleum hydrocarbons.
	www.epa.state.oh.us /dsw/permits/HydrostaticTestWater_Draft_GP_jan07.html (224 words)

	Air guns - Pyramyd Air Report: Hydrostatic testing of pressure vessels, including scuba tanks
		That test is done with water instead of air and is called a hydrostatic test.
		The hydrostatic test is peculiar to the type of tank being tested.
		I talked to the test engineer at a test station, and he told me a failure during test was rare.
	www.pyramydair.com /blog/2006/12/hydrostatic-testing-of-pressure.html (1616 words)

	american gas & chemical co Hydrostatic Testing
		Hydrostatic Leak Testing is used to test components for leaks by pressurizing them inside with a liquid.
		Hydrostatic Leak Testing requires that a component be completely filled with a liquid such as water.
		Hydrostatic Leak Testing is covered by the Standard Method for Hydrostatic Testing, ASTM Standard # E1003-95 available from the ASTM and American Gas and Chemical Co. Ltd.
	www.amgas.com /hydro.htm (706 words)

	Geomembranes
		This test method is intended to simulate the puncture behavior of geomembranes under a hydrostatic pressure.
		Upon adequate sealing of the geomembrane and closing of the upper portion of the assembly, a hydrostatic pressure is applied to a targeted value or until the geomembrane fails.
		The purpose of such stabilization is to provide for test repeatability by fixing the position and orientation of the individual particles of soil from test to test.
	www.drexel.edu /gri/member/GM/GM3/GM3.html (1408 words)

	Hennigan Engineering Co., Inc.: Hydrostatic Testing
		With the assistance of a positive displacement pump incorporating appropriate safety relief's and controls, the pressure of the test component is slowly increased to a predetermined set point and held for a predetermined time.
		Normal testing utilizes a low volume, medium-pressure (20 psi to 2,000 psi), hydrostatic test pump designed to testing small water line or pressure systems.
		The test pump assemblies are complete with a an unloader valve or pressure regulator to regulate pressure, a high-pressure discharge valve to isolate the device being tested and a pressure gauge that is traceable to the National Bureau of Standards for certification of the test.
	www.henniganengineering.com /hydrotest.htm (359 words)

	Hydrostatic Test Planning (Site not responding. Last check: 2007-11-04)
		If your company is planning to conduct a hydrostatic test of a new or an existing pipeline, we may be able to help you get the most effective test.
		Whether or not the test can be carried out to levels of 90 to 95 percent of SMYS or to higher levels depends on what types of defects are present and how large they are.
		In any test, be it of a new or an existing pipeline, it is important to examine any test failures to determine their causes.
	www.kiefner.com /hydro.html (400 words)

	Under Slab Drain Hydrostatic Testing for Plumbing Problems (Site not responding. Last check: 2007-11-04)
		In order to properly perform the test the ball must be placed in the pipe at a point immediately outside the house, this allows for the entire under slab portion of that system to be tested.
		Once isolation testing is done a map of the house indicating the line locations and leak locations is drawn up and then a repair proposal is written based on the results of the test.
		Testing the yard portions can and often do results in leaks being recorded as the yard lines are usually not always water tight.
	www.dawsonfoundationrepair.com /under_slab_hydrostatic_testing.htm (1021 words)

	Re: HYDROSTATIC TEST BOILER
		Hydrostatic test duration of high Pressure boilers 40 Kg/cm^2 [570-psi] also include lower pressure boilers as well as higher pressure boilers.
		The purpose of the hydrostatic test is to find leaks and it is not a proof test where deformations are the criteria.
		Although, while you are inspecting the boiler during a hydrostatic test you should inspect for leaks and if you notice a deformation then take appropiate action.
	www.steamforum.com /steamforum2001/_discstm/00000068.htm (258 words)

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