1. Initial Start-up of V-4637 Deaerator
V-4637 Deaerator and connected pumps should be started in accordance with the following steps.
1) Confirm enough demineralised water is stored in T-4617.
2) Line up as follows.
- Open all isolation valves on the line from T-4617 to P-4636A/B.
- Close isolation valves on LRCA-401 and its bypass valve.
- LRCA-401 is in manual position and zero output.
- Open water inlet valve of deaerator.
- Fully open the top air vent valve of deaerator.
- Open all isolation valves of instrument mounted on deaerator.
- Close V-4637 drain valve and isolation valve to 46SC-C022.
- Open all isolation valves on the line from V-4637 to P-4657A/B.
- Close isolation valve of P-4657A/B warm up line and their drain valves.
- Close P-4657 A/B discharge isolation valves.
- Steam supply to V-4637 is isolated.