U1 Seal Oil Flashcards Preview

2. RO32 Systems > U1 Seal Oil > Flashcards

Flashcards in U1 Seal Oil Deck (18)
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1
Q

What normally supplies U1 Seal Oil to the Generator?

A
  • The Main Seal Oil Pump (MSOP) @ 130#
2
Q

When will the Emergency Seal Oil Pump (ESOP) auto start?

A
  • MSOP disch # < 125#
3
Q

What are the U1 Seal Oil supplies in order with pressures?

A
  • MSOP (130#)
  • ESOP (125#)
  • Shaft Driven Oil Pmp (120#)
  • Bearing Oil Header (25#)
4
Q

When will the Vacuum Pump trip on U1 Seal Oil Tank?

A
  • High Level in the tank
5
Q

Will the Vacuum Pump on U1 Seal Oil Tank restart once High Level Alarm is clear?

A
  • Yes it will restart once High Level Alarm is clear
6
Q

What does the U1 Seal Oil Recirc Pump do?

A
  • Recirc contents of the seal oil tank to retard foaming and aid in removing non condensables and H2
7
Q

What cools U1 Seal oil?

A
  • Bearing Oil Header
8
Q

What is the makeup to U1 Seal oil?

A
  • Bearing Oil Header
9
Q

What pressure do we keep the U1 Seal Oil at and why?

A
  • keeps seal oil pressure 3 - 8# > Gen H2 # to prevent H2 from leaking out
10
Q

Where is the H2 pressure sensed on the U1 Seal Oil?

A
  • gas pressure at the H2 seal drain enlargement tank.
11
Q

Where is the Seal Oil pressure sensed on the U1 Seal Oil?

A
  • Senses seal oil # at the exciter end
12
Q

Where does the MSOP get its suction from?

A
  • U1 Seal Oil Tank
13
Q

Where does the ESOP get its suction from?

A
  • Bearing Oil Header
14
Q

What RPM must the turbine be spinning to allow use of the Shaft Driven Oil Pump as a supply source?

A
  • > 1300 rpm
15
Q

What is the purpose for having U1 Vacuum Tank Nozzles?

A
  • Reduces foaming

- Aids in degassing Seal Oil

16
Q

If you lose oil supplied by the Bearing Oil Header, how is the U-1 Seal Oil being cooled?

A
  • The oil in the U-1 Seal Oil system loses capability of being cooled with the loss of the Bearing Oil Header return
17
Q

How is level maintained in H2 Drain Path for U-1 Seal Oil?

A
  • level maintained in the H2 seal drain enlargement by the float trap
18
Q

How is level maintained in Turbine end Drain Path for U-1 Seal Oil?

A
  • Air Detraining Section receives all oil from the seals and it overflows to bearing oil drain