Title: HYDROSTATIC TESTING
1HYDROSTATIC TESTING
Approved for Public Release
2Hydrostatic 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)
Approved for Public Release
3Hydrostatic 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.
Approved for Public Release
4Hydrostatic 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
Approved for Public Release
5Test 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
Approved for Public Release
6Test 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
Approved for Public Release
7Hydrostatic 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
Approved for Public Release
8Condition 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)
Approved for Public Release
9Test 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)
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10Test 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
Approved for Public Release