Tests conducted
Tests are conducted in accordance with the requirements of ANSI Z21.83 - 1998, stationary fuel cell power plants. Additional tests may be conducted based on their applicability to the product being investigated. These tests are derived from standards including NFPA 50A, the standard for gaseous hydrogen systems at consumer sites; NFPA 54, the fuel gas code; the national electrical code article 692; and various product specific UL Standards. A typical investigation might include the following tests:
- Liquid systems pressure test
- Gas systems pressure test
- Gas system leakage test
- Venting system leakage test
- Shutdown test resulting from certain parameters including FMEA
- Effluent emission
- Burner operation characteristics, start burner
- Ignition systems tests -- start burner
- Exhaust gas temperature -- start burner & process exhaust
- Surface and component temperature
- Grounding continuity test
- Leakage current/insulation resistance
- Dielectric strength tests
- Rain and wind tests *
- Permanency of label marking **
* Dependent upon the installation specified in installation manual.
** UL Recognized label suitable for the application might waive the need for this test.
Other tests as necessary would be conducted to deal with special situations such as the evaluation to show leakage at the cell stacks is handled appropriately, fuel component sections of the cabinetry are ventilated as designed, or non-certified components are tested appropriately for use in this application. Some additional testing may be needed to demonstrate that mitigating means noted in the FMEA operate as intended.
