Dear Benz,
1. We still need to have isolation valve at upstream of JOU. Base on experienced we had worked at such condition without any problem. The surrounding condition in generator compartment does not extremes as GE cited. In the past we had repair jacking oil pump while GTG have normal operate because found defect on JO pump after GTG started up that must corrected for ready to use in further cool down period.
2. Accept as GE reply because schedule constrain and warrantee impact.