I
Am new to the forum and am trying to share some thoughts. We have nine gas turbines, eight frame 7E and one 7EA with MKV simplex/TMR control system. Per design, our GT units are configured for lube oil tank level ALARM as under:
- 7E frame GTGs are configured for LUBE OIL TANK LEVEL - HIGH / LOW ALARM (L71Q), i.e. one common alarm is generated in case of high or low lube oil tank level.
- 7EA GTG is configured for LUBE OIL TANK LEVEL - LOW ALARM (L71QL), i.e. a dedicated low level alarm is generated in case of low lube oil tank level.
The GT design permits unit trip through low lube oil pressure only, 63QT, and not through low or low low lube oil tank level. I want to understand why the OEM considers lube oil pressure only and does not take into account unit tripping through a low or low low lube oil tank level as additional protection, or a combination of both the low lube pressure and low tank level.
If anyone has any opinion in this regard, kindly share please. Thanks.
- 7E frame GTGs are configured for LUBE OIL TANK LEVEL - HIGH / LOW ALARM (L71Q), i.e. one common alarm is generated in case of high or low lube oil tank level.
- 7EA GTG is configured for LUBE OIL TANK LEVEL - LOW ALARM (L71QL), i.e. a dedicated low level alarm is generated in case of low lube oil tank level.
The GT design permits unit trip through low lube oil pressure only, 63QT, and not through low or low low lube oil tank level. I want to understand why the OEM considers lube oil pressure only and does not take into account unit tripping through a low or low low lube oil tank level as additional protection, or a combination of both the low lube pressure and low tank level.
If anyone has any opinion in this regard, kindly share please. Thanks.