Category
Rotating Equipment
Subcategory
Driver
Applicable standards
4
Issuing bodies
3
Description
Industrial / aeroderivative gas turbine for mechanical drive or power generation.
Applicable Standards (4)
API — 2 standards
API 616
Gas Turbines for the Petroleum, Chemical, and Gas Industry Services
Open, simple- and regenerative-cycle combustion gas turbines for industrial drive service.
Key requirements (9)
- Gas turbines for petroleum, chemical, gas industry service.
- Power range: typical 1–250+ MW.
- Performance test per ASME PTC 22.
- Mechanical run test: 4 hours at MCS.
- Allowable inlet ΔP: typically ≤ 250 mmH2O total.
- Allowable exhaust backpressure: typically ≤ 350 mmH2O.
- NOx limit: dictated by site emissions permit; DLE/DLN combustors typical.
- Vibration per API 670; instrumentation mandatory.
- Gas fuel filtration: ≤ 5 µm absolute typical.
API 670
Machinery Protection Systems
Vibration, axial-position, bearing temperature monitoring for rotating machinery.
Key requirements (7)
- Machinery protection systems for rotating equipment.
- Standard sensors: 8 mm proximity probes (eddy current), velocity sensors, accelerometers, KPH probes for speed.
- Signal: 200 mV/mil sensitivity for proximity probes (5 V across 25 mil gap).
- Standard alert/shutdown: 25 µm Alert / 50 µm Trip on shaft displacement (typical, tunable).
- Bearing temperature RTD: 100 Ω Pt; 110 °C Alert / 120 °C Trip typical.
- Casing vibration (accelerometer / velocity): 7.6 mm/s RMS typical alert for centrifugal machines.
- API 670 monitoring system has 2-out-of-3 voting for trips, with bypass keys for maintenance.
ASME — 1 standard
ASME PTC 22
Gas Turbines — Performance Test Code
Performance acceptance testing of gas turbines.
ISO — 1 standard
ISO 3977 (series)
Gas turbines — Procurement
Procurement specification for gas turbines.