
HYDROSTATIC TESTING Approved for Public Release
Hydrostatic Testing • Testing requirements may be specified in drawings, specifications, or standard clauses (76 series) • Generally procedures are required • must be clear, concise, and sufficiently descriptive to perform the test • may require approval of the test procedure (VPAR) Hydrostatic Testing Approved for Public Release
Hydrostatic Test Setup & System • Use of Test Gauges • Must be in the calibration system and properly calibrated • Must be of a proper range for its intended use • Anticipated test pressure reading must be approximately 1/2 to 2/3 of the total gauge range. • Good practice is gauge increments must be no greater than the total tolerance allowance. Hydrostatic Testing Approved for Public Release
Hydrostatic Test Setup & System Cleanliness of the Test System and Fluid • Contamination within the test setup may • influence the outcome of the test, • damage component being tested, or • damage test setup equipment • Example = dirt on a valve seat Cleanliness of the Tested Product • Requirement may invoke specific cleanliness for the test setup and fluid • Requirement may have specific flushing instructions for the product prior to and following the test Hydrostatic Testing Approved for Public Release
Test Setup Must be Designed for Safety and Functionality • Relief valves must be incorporated into the test system to prevent over pressurization • Protect against personnel injury • Prevent damage to test hardware • Prevent damage to component being tested Hydrostatic Testing Approved for Public Release
Test Pressure, Temperature and Dwell Time • Allow time for the system to stabilize at ambient temperature before conducting the test. • Pressure, temperature, and dwell time must have tolerance limits - if not available, request limits using a Vendor Information Request (VIR). • Tolerance per industry standard is not acceptable Hydrostatic Testing Approved for Public Release
Hydrostatic Test Setup & System • Pressurize the system and isolate the test product from balance of the test setup • Observe the test product for results as required in the appropriate procedure and document the results • Obtain Electric Boat witness if required (SC37-8) • Inspect for leakage through the product • Document the actual time, temperature, and pressure test parameters Hydrostatic Testing Approved for Public Release
Condition of the Component After Testing • Properly cleaned • Preservatives, if required • Sealed, if required • Proper orientation during handling and storage to prevent damage • (example = position of ball or gate within a valve may be important, especially for long term storage) Hydrostatic Testing Approved for Public Release
Test Report Must Contain: • Name of Testing Organization • Date of the test • EB Purchase Order and Item Number • Applicable Component Specification, Drawing, etc. and Revision • Test Procedure and Revision (VPAR# if applicable) • Identification of testing equipment • Serial number of gauging used • Traceability of component (Serial/Heat/Lot Code Number) Hydrostatic Testing Approved for Public Release
Test Report Must Contain:(continued) • Actual test parameters (pressure, temperature, dwell time, etc.) and the acceptance criteria • Statement of results (Accept or Reject) • Document nonconformance should failure occur • Component(s) affected • Amount and rate of leakage if recordable, • Signature of test organization representative and date as required by the specification Hydrostatic Testing Approved for Public Release