STDSPFI ES-V-ENGL 1785 71b1i5q'4 0 0 0 0 4 b 0 30b PFI Standard ES-4 (Revised 1985) (Reaffirmed March 1999) HYDROSTAT
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STDSPFI ES-V-ENGL
1785
71b1i5q'4 0 0 0 0 4 b 0 30b PFI Standard ES-4 (Revised 1985) (Reaffirmed March 1999)
HYDROSTATIC TESTING OF FABRICATED PIPING
Prepared by Pipe Fabrication Institute Engineering Committee
All PFI Standards are advisory only. There is no agreement to adhere to any PFI Standard and their use by anyone is entirely voluntary.
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S T D m P F I ES-4-ENGL Il785 PFI Standard ES-4 (Revised 1985) (Reaffirmed March 1999)
HYDROSTATIC TESTING OF FABRICATED PIPING all low-pressure filling lines and other appurtenances, that should not be subjected to the test pressures, have been disconnected or isolated by valves or other suitable means.
1. Scope 1.1 To establish a standard for hydrostatic testing of fabricated piping.
2. Time of Tests
4.4 Following the application of the test pressure, examination for leakage shall be made of all joints and connections.
2.1 Hydrostatic testing of fabricated piping assemblies is usually accomplished after installation when the completed system is tested. Testing of subassemblies in the fabricator’s shop may be necessary when the completed system is designed andior supported so that it cannot be filled with water or when the system cannot be readily dried and traces of the test medium cannot be tolerated in the system. In any case, piping assemblies are hydrostatically tested in the shop only when so specified in the contract documents.
5. Test Pressure Requirements 5.1 The assembly shall be subjected to a hydrostatic test pressure not less than 1.5 times the design pressure or as specified by the applicable code. 5.2 The hydrostatic test pressure shall not exceed the maximum allowable test pressure of any nonisolated component in the assembly.
3. Preparation for Testing
5.3 The hydrostatic test pressure shall be maintained for a minimum total time of ten minutes or as specified.
3.1 All joints, including welds, shall be left uninsulated and exposed for examination during the test.
6. Pressure Test Gages
3.2 All openings should be sealed using plugs, blind flanges, weld caps, or other suitable material which can be readily and completely removed after completion of the test.
6.1 Pressure test gages used in pressure testing shall be indicating pressure gages and shall be connected directly, where possible, to the component.
3.3 Means shall be provided to isolate the assembly being tested from the fill piping and pump by using a valve, suitable for the test pressure, and located as close to the assembly as possible.
6.2 Pressure gages used in testing shall preferably have dials graduated over a range of about double the intended maximum test pressure, but in no case shall the rage be less than 1-112 nor more than 4 times the test pressure.
4. Testing Procedure 4.1 Assemblies shall be purged of air pockets while being filled.
6.3 Pressure gages shall be calibrated prior to use.
7. Acceptance Standards
4.2 Water, at the temperature and chemical content of the available source, shall normally be used for the hydrostatic test fluid. Any special requirements as to chemical content of the water, the use of other test mediums andor temperature shall be so specified in the contract documents.
7.1 If no indication of leakage is observed, the assembly is considered acceptable.
7.2 If any leakage is observed, its location shall be marked. The assembly shall then be depressurized and the leaks repaired. After repairs have been made, the assembly shall be retested.
4.3 The test equipment shall be examined before pressure is applied to ensure that it is tight and that
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PFI Standard ES-4 (Revised 1985) (Reaffirmed March 1999)
8. Records 8. I A record of each hydrostatic test shall be made. These records shall include: A. Date of Test
B. Identification of Fabricated Piping Assemblies Tested C. Test Medium Used D. Test Pressure and Holding Time E. Signatures of the Company’s Inspector and the Authorized Inspector and Customer’s Inspector when applicable. 8.2 These records need not be retained after completion of the project unless required by Code or contract.
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CHARTER MEMBERS
ACCORD PIPE FABRICATORS, INC.
Jamaica,
New York
AIR CONDITIONING COMPANY, INC.
Glendale,
California
FLO-RITE, INC.
Riviera Beach,
Florida
GEM INDUSTRIAL, INC.
Walbridge,
Ohio
HPI CONSTRUCTION CO., INC.
Huntington,
West Virginia
IDEAL WELDERS, LTD.
Delta,
British Columbia (Canada)
IVOR J. LEE, INC.
Masury,
Ohio
JOHN E. GREEN COMPANY
Highland Park,
Michigan
J. F. AHERN CO.
Fond du Lac,
Wisconsin
J. H. KELLY LLC
Longview,
Washington
J. S. MC KINNEY, INC.
Freeport,
Texas
KINETIC SYSTEMS, INC.
Santa Clara,
California
M & M WELDING AND FABRICATORS, INC.
Gaithersburg,
Maryland
MC ABEE CONSTRUCTION, INC.
Tuscaloosa,
Alabama
MC CARL'S, INC.
Beaver Falls,
Pcnnsylvania
MECHANICAL INCORPORATED
Freeport,
Illinois
MID STATES PIPE FABRICATING, INC.
EI Dorado,
Arkansas
MURPHY COMPANY
St. Louis,
Missouri
NARDE1 FABRICATORS, LTD.
Calgary,
Alberta (Canada)
NEWMECH COMPANIES, INC.
St. Paul,
Minnesota
PHILLIPS, GETSCHOW COMPANY
Oconto Falls,
Wisconsin
PIPING SYSTEMS, INC.
New London,
Wisconsin
S. A. COMUNALE COMPANY, INC. S&D / OSTERFELD MECHANICAL CONTRACTORS
Barberton,
Ohio
Dayton,
Ohio
SCOTT CO. O F CALIFORNIA
San Leandro,
California
SPECIALTY PIPING CORPORATION
Davisville,
West Virginia
TEAM INDUSTRIES, INC.
Kaukauna,
Wisconsin
W. J. O'NEIL COMPANY
Livonia,
Michigan
A current index of the latest revised ES Standards, Technical Bulletins and Safety Training Guideline is available from the Pipe Fabrication Institute.
PFI Safety Training Guideline, Standards and Technical Bulletins are published to serve proven needs of the pipe fabricating industry at the design level and in actual shop operations. Hence, such needs are continually considered and reviewed by the Engineering Committee of the Pipe Fabrication Institute to provide recommended procedures, which have been demonstrated by collective experiences to fulfill requirements in a manner for Code compliance. However, as the PFI Standards are for minimum requirements the designer or fabricator always has the option of specifying supplementary conditions in the form of requirements beyond the scope of the PFI publications.
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