ML20080P586
| ML20080P586 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 02/15/1984 |
| From: | DUKE POWER CO. |
| To: | |
| Shared Package | |
| ML20080P419 | List:
|
| References | |
| AP-O-B-5500-34, NUDOCS 8402220590 | |
| Download: ML20080P586 (4) | |
Text
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Fow34972 (8 02)
"^U E "O' CNS ABNORMAL PROCEDURE FOR SECONDARY CHEMISTRY A P/0/B/5500/34 PARAMETERS OUT OF SPECIFICATION 1
ll 1.0 SYMPTOMS l
Listed below are the normal values and Action Level values of various Sec6ndary Chemical Parameters based on the EPRI Secondary Water Chemistry Guidelines.
Note that these values vary depending upon the mode of operation of the plant.
Mode 1 - Power Operation Steam Generator Blowdown Samples ( A - D):
Action Level Value Parameter Normal Value 1
2 3
pH 8.5 - 9.2
< 8.5
> 9.2 Cation Cond. p.mhe/cm 5 0.8
> 0.8
> 2
>7 Na, ppb 5 20
> 20
> 100
> 500 C1' ppb
< 20
> 20
> 100 SiO, ppb 3300
> 300 2
Final Feedwater Samole:
pH 8.8 - 9.2
< 8.8
> 9.2 Cation Cond. Amho/cm 1 0.2
> 0.2 Sodium, ppb
$3
> 3 Dissolved 0, ppb
$3
> 3 2
Total Copper, ppb
$2
> 2 Total Iron, ppb 5 20
> 20 N H, ppb
> 3 x [0,,)
3 x [O ]
24 3
NH 3
Hotwell Pump Discharge Sample:
Dissolved 0, ppb
$ 10
> 10
> 30 2
- To be consistent w;th pH within 2 0.1 unit; if not, go to Action Level 1.
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l Form 34912 (8 82)
PAGE NO.
CNS ABNORMAL PROCEDURE FOR SECONDARY CHEMISTRY AP/0/B/5500/34 PARAMETERS OUT OF SPECIFICATION 2
Mode 3 - Hot Standby Steam Generator Blowdown Samoles ( A - D):
Action Level Value Prior To Parameter Normal Value 1
2 3
Power Escalation pH 8.5 - 9.2
< 8.5
> 9.2 Cat. Cond. Ambo/cm 5 2.0
> 2.0
< 2.0 Dissolved 0, ppb
$5
>5 2
Na, ppb 5 100
> 100
< 100 C1', ppb
$ 100
> 100
< 100 Final Feedwater Samole:
Dissolved 0,
< 100
> 100 3
N H, ppb
> 3 x [0 ]
<3x[0) 24 2
2 Mode 5 - Cold shutdown Steam Generator Blowdown Samples ( A - D):
Action Level Value Value Prior Parameter Normal Value 1
2 3
to Heatup pH 9.8 - 10.5-
< 9.8 8.5 - 3.2
> 10.5 N H, ppm 75 - 200
< 75 24 Sodium, ppb
< 1000
> 1000 5 100 Cat. Cond. Amho/cm < 10
> 10 5 2.0 h
1
Form.'W912 (S 82)
CNS ABNORMAL PROCEDURE FOR SECONDARY CHEMISTRY AP/0/B/5500/34 PARAMETERS OUT OF SPECIFICATION 3
A u x ilia ry Feedwater Samole:
Dissolved 0, ppb
< 100 in fill
> 100 in fill 2
2.0 IMMEDI ATE ACTION 2.1 Automatic None.
2.2 Manual 2.2.1 When a secondary chemical parameter reaches an Action Level Value, follow the actions outlined for the appropriate Action Level per Enclosure 4.1, Action Level Guidelines.
3.0 SUBSEOUENT ACTION 3.1 If the mode of unit operation was changed due to an Action Level Guideline, the unit may be returned to the original mode after the problem has been identified and corrected.
4.0 ENCLOSURES 4.1 Action Level Guidelines END -
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PAGE NO.
CNS ENCLOSURE 4.1 4
AP/0/B/5500/34 ACTION LEVEL GUIDELINES
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ACTION LEVEL ONE GUIDELINES Objective:
To identify and correct the cause for an out of spec. condition without any power reduction and before the condition develops into a significant corrosion problem.
Actions :
1.
Identify source of problera.
2.
Correct problem within 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />.
3.
If the problem is not corrected within 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />, go to Action Level 2.
ACT!ON LEVEL TWO GUIDELINES Objective:
io minimize corrosion by operating at reduced power (30% or less) while corrective actions are taken. This level of power reduction will provide sufficient flow to maintain automatic operation while the source of the problem is corrected.
Actions:
1.
Continue trying to identify and correct the source of the p roblem.
2.
Have Chemistry verify the sample analysis before power reduction.
3.
Reduce the power level to 30% or less within four hours of initiation of Action Level 2.
4.
If proHem not corrected within 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> of initiation of Action Level 2, go to Action Level 3.
ACTION LEVEL THREE GUIDELINES Objective:
To correct a condition which will result in rapid steam generator corrosion.
Plant shutdown will avoid ingress and eliminate further concentration of harmful impurities.
Actions:
1.
Have Chemistry verify the sample analysis prior to shutdown.
2.
Shutdown within four hours of the initiation of Action Level 3.
3.
Clean up by feed and bleed, or drain and refill as appropriate until normal values are reached.
4.
Identify and correct the source of the problem.
Ei
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