IEEE C37.122a-1991 - IEEE Supplement to IEEE C37.122-1983, IEEE Standard Gas-Insulated Substations (Section 2.2.2: Pressurized Enclosures)
Standard Details
Detailed requirements for pressurized enclosures for gas insulated substations are set forth. Criteria for enclosure design, including temperatures; thermal cycling, vibration, shock, and seismic requirements; design pressure; and calculation methods are specified. Stress under abnormal pressure, pressure relief devices, routine pressure tests, tests after erection on site, and design tests are covered.
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