- LOT 803.09 Monitor Plant Chemistry*
- *
What are your actions for primary chemistry action level 3?
Generate a CR
S/D immediately
Lower temperature to < 250 ˚F as rapidly as possible.
- 0PGP03-ZT-0142 STA*
- *
How long does the STA have to get to the control room once notified?
10 mins
- LOT 803.09 Monitor Plant Chemistry*
- *
What is the objective of secondary chemistry action level 3?
To correct a condition that can result in rapid corrosion of a secondary side component during continued operation.
Plant shutdown will minimize impurity ingress and limit exposure of steam generator, turbine, and other secondary materials to corrosive solutions.
- LOT 803.09 Monitor Plant Chemistry*
- *
What do the different primary chemistry action levels mean?
- Action Level 1:*
- *Long term reliability could be affected**
- Action Level 2:*
- *Significant damage could be done in a very short time**
- Action Level 3:*
- *Inadvisable to keep operating the plant**
- 0PGP03-ZT-0142 STA*
- *
When can the STA stand watch as the Unit Supervisor, Primary RO, or Secondary RO?
US / RO must be available to re-relieve the STA if STA becomes activated
US / RO must be in same unit as STA
US / RO must perform shift turnover on same unit
- LOT 803.08 Respond to Off-Normal Conditions*
- *
What is STP required to notify the owner QSE’s of?
Power reductions > 25 MWe (Non-Peak)
Power reductions > 5 MWe (Peak)
Unit / Plant Shutdowns
Changes in scheduled power generation
Notifications made by EMS website and then followed by a telephone call.
- LOT 803.08 Respond to Off-Normal Conditions*
- *
Can alternate performance be applied to POP04’s and POP05’s?
No
Only applies to operating procedures
- LOT 803.09 Monitor Plant Chemistry*
- *
What are your actions for primary chemistry action level 1?
Generate CR
Bring back in spec within 7 days
If cannot be fixed within 7 days, then more formal corrective actions will be performed.
- LOT 803.09 Monitor Plant Chemistry*
- *
What chemistry transients warrant a Rx trip?
CP Fully bypassed
AND
Condensate Pump Discharge cation conductivity verified > 1.0 µS/cm
SG Cation conductivity rising
AND
SG Na, Cl, or SO4 > 1000 ppb
SG Cation conductivity > 15 µS/cm
AND
SG Na rising
- 0PGP03-ZT-0142 STA*
- *
When is the STA activated?
Emergency Plan Entry
EOPs entered
SM / STA discretion
- LOT 803.09 Monitor Plant Chemistry*
- *
What actions shall be performed for a secondary chemistry action level 2?
Generate CR
Take actions for safe and orderly reduction of power to ≤ 50% and achieve ≤ 50% power within 24 hours of entering Action Level 2.
Have 300 hours until action becomes action level 3
Power reduction may be terminated when no longer in action level 2 but may not raise power until out of action level 1.
- LOT 803.09 Monitor Plant Chemistry*
- *
What are your actions for primary chemistry action level 2?
Generate CR
Fix within 24 hrs
If cannot be fixed within 24 hrs, S/D plant to cold S/D.
If heating up plant and > 250 ˚F and Cl, SO4, Fl > 150 ppb for 24 hrs or O2 > 100 ppb for 24 hrs then lower temperature < 250 ˚F.
- LOT 803.09 Monitor Plant Chemistry*
- *
What is the objective of secondary chemistry action level 1?
Identify and correct the cause of an out-of-normal value without a power reduction
- LOT 803.09 Monitor Plant Chemistry*
- *
What actions shall be performed for a secondary chemistry action level 1?
Generate CR
Return parameter < Action Level 1 Value
Have 21 days until it becomes action Level 2
- LOT 803.09 Monitor Plant Chemistry*
- *
What is the objective of secondary chemistry action level 2?
To minimize corrosion by operating at reduced power while corrective actions are taken.
- LOT 803.09 Monitor Plant Chemistry*
- *
If a chemistry waiver is desired and the waiver is for a control parameter, whose concurrence must be obtained?
Plant Manager
Chemistry Manager is required for all waivers.
- LOT 803.09 Monitor Plant Chemistry*
- *
What actions shall be performed for a secondary chemistry action level 3?
Generate a CR
- *Take Plant to ≤ 5% power as quickly as safe plant operation permits.**
- Has to be done regardless of the duration into Action Level 3*
- Note:*
- If due to Hydrazine / FW O2 < 2, have 8 hrs to fix and then must go to cold shutdown.*
