HYDROSTATIC TESTING

1. HYDROSTATIC TESTING Approved for Public Release

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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