ML17341A695
| ML17341A695 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 04/25/1980 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17341A684 | List: |
| References | |
| 6108.4, NUDOCS 8112080250 | |
| Download: ML17341A695 (14) | |
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s FLORIDA POWER AilD LIGHT COMPANY TURKEY POINT UNITS 3 AND 4 OFF-NORMAL OPERATING PROCEDURE 6108.4 APRIL 25 1980
1.0 Title
CONDENSER LEAK PROCEDURE - NORMAL POWER OPERATION
- 0 2.0 A
royal and List of Effective Pa es:
2.1 ~aroval:
Change Dated 4/25/80 Reviewed by Plant Nuclear Safety Committee:
80-20 and Approved by Plant ilanager - Nuclear:
4/25/80 2.2 list of Effective Pa es:
1 4/25/80 2
8/31/79 3.0 Pur ose and Discussion:
Pa(ac Date 3
8/31/79
~Pa e
Date 4
4/25/80 3.1
~Por ose:
The purpose of this procedure is to provide instructions to ensure steam generator contamination from condenser tube leaks during normal power operation is effectively mitigated.
3.2 Discussion
This procedure is necessitated due to the poor condition of the original material condenser
- tubes, the deficient design o
the steam generators rendering them intolerant to relatively low levels of contamination, and the possibility that chloride contamination, in some way as yet not understood, may accelerate the tube denting phenomena occurring on steam generators of des i gn.
this 4.0
~smotaas:
4.2 Verification of a
leak means that to the extent possible the conductivity information displayed on the recorder is determined to be valid.
There should be flow through the cells.
If there is proper
- flow, then the following indications should be present:
4.2. 1 At least one hotwell point increasing.
4.1 Cation conductivities are based on full load (100> power) flows.
As load is reduced with a given size leak in progress, the hotwell and condensate header conductivities will increase in proportion to the flow decrease.
The 120 iimho steam generator conductivity is independent of unit load.
81i2080250 8f,120~1'II PDR ADOCK 05000250 PDR
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OFF-NORtlAL OPERATING PROCEDURE 6108.4, PAGE 2
CONDENSER LEAK PROCEDURE -
NORMAL POWER OPERATION 8/31/79 4.2.2 At least one condensate header increasing.
- 4. 2.3 All steam generators increasing.
5.0 Instructions
- 5. 1 Condenser Tube Ru ture:
A condenser tube failure which results in a cation conductivity from either condensate header
> 8 pmho's.
- 5. 1. 1 Indicati ons:
ll 1
1.
An audible alarm in the control
- room, "Condensate High Conductivity -
1 pmho".
2.
Cation Conductivity Recorder:
( 1)
Cation Conductivity
> 8 pmho's from either condensate header.
(2)
Corresponding hotwell quadrant
> 10 pmho's.
(3)
Steam generator cation conductivities rapidly increasing.
- 5. 1.2 Immediate and Prompt Followup Actions:
1.
Verify the presence of a condenser tube rupture in accordance with indications listed in 6. 1. 1.
,, i 2.
Inform Power Coordinator - Condenser Tube Rupture has occurred and immediate shutdown is required.
3.
8egin load reduction at maximum ramp rate.
4.
Trip the unit when it has been unloaded.
5.
Establish feedwater flow to the steam generators from an uncontaminated
- source, i.e.,
auxiliary feedwater or the fossil unit feedwater tie.
The condensate reject system should be isolated to avoid the risk of contaminating the associated condensate storage tank.
5.2 Condenser Leak 5.2. 1 Indicat ions:
Some or all of the following indications may be present:
1.
An audible alarm in the control
- room, "Condensate High Conductivity -
1 pmho" 2.
Cation Conductivity Recorder
OFF-NORMAL OPERATING PROCEDURE 6108.4, PAGE 3
CONDENSER LEAK PROCEDURE -
NORMAL POWER OPERATION 8/31/79 (1) steam generator cation conductivities above normal background or increasing (2) cation conductivity higher on one condensate header than the other (3) in conjuction with (2)
- above, cation conductivity in a
corresponding hotwell quadrant higher than the other three 3.
Steam Generator Samples (1)
> 0.15 ppm (2) depressed pH in conjunction with significant inleakage 5.2.2 Immediate Actions l.
Verify the presence of a
condenser leak in accordance with indications listed in 5.2. 1 above.
2.
Inform Power Coordinator A
condenser leak is occurring and immediate load reduction to approximately 50% is required unless the load reduction would result in interrupting service to customers.
3.
If a load reduction would not result in interrupting service to customers, begin load reduction at maximum rate consistent with plant curve book or other applicable limiting conditions.
Stop load reduction at half load unless steam generator cation conductivity from any steam generator exceeds 120 pmho's in which case the unit shall be brought to the hot shutdown condition.
4.
If a
1 oad reducti on woul d resul t in interrupting servi ce to customers, attempt to control the condenser leak by sawdusting until a load reduction would not result in interrupting service to customers.
If the leak cannot be corrected by sawdusting, reduce load in accordance with 5.2.2.3.
5.3 Subsequent Actions:
5.3-1 Increase steam generator blowdown to maximum rate
- 5. 3.2 Contact Chemistry Department for analytical support of chemistry conditions and notify Maintenance of condenser leak.
5.3.3 Identify the leaking condenser quadrant (indicated by highest cation conductivity),
and begin preparations for entering the water box.
5.3.4 The water boxes of the affected condenser quadrant should be drained just as soon as load conditions permit and the location of the leak is known.
1.
Under extreme cases, it may be necessary to drain a set of water boxes and evaluate chemistry parameters in order to identify the leaking quadrant.
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I OFF-NORi'1AL OPERATING PROCEDURE 6108.4, PAGE 4
CONOEiNSER LEAI'ROCEDURE -
NORt1AL POWER OPERATION 4/25/80 (0
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5.3.5
!f the chloride in any steam generator exceeds 10 ppm chloride (120 umho's) the unit shall be Jrenoved from the line.
The reactor may be left critical or placed in a
shutdown condition.
Action will be initiated to remove chloride from the steam generators and condensate svystem 5.3.6 Prior to increasing power level to above 80$, steam generator chloride concentration shall be
< 0.15 ppm.
6.0
References:
C. 0.
Woody letter to H. E.
Yaeger dated August 8, 1979 7.0 Records Re uired:
Normal log entries
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FLORIDA POWER 5 LIGHT COMPANY INTER-OFFICE CORRESPONDENCE To Laboratory "Personnel LOCATION DATE PTP-N September 1, 1981 FRQM R. A. Leineke COPIES To Laborator Polic for Out-Of-S ecification Conditions The following information should be used 'as a guideline for determining corrective action to be initiated whenever out-of-specification conditions are suspected, or confirmed.
Since it would be impractical to predict every aspect of every condition, this instruction may not cover every problem.
Notify applicable supervisory personnel wherever problems or questions
- arise, not covered by this instruction.
I.
Technical S ecifications Technical Specifications are limits imposed upon Florida Power Light Company.
Any deviation from those limits will result in a Technical Specification violation.
Deviation from any Technical Specification limits associated with laboratory responsibility or surveillance will be given utmost priority and immediate attention of laboratory personnel.
Whenever a Technical Specification limit has been
- exceeded, or is in danger of being exceeded, the following corrective action should be initiated immediately:
1)
Notify me as soon as possible, I will in turn notify the Nuclear Chemistry Supervisor and/or Radiochemist.
In my
- absence, the Nuclear Chemistry Supervisor should be notified.
2)
Immediately verify results of initial determination.
(i.e.
a)
Recheck initial sample if feasible, b)
Resample prior to initiating corrective action, and c)
Investigate changes in other parameters that could substantiate initial results.)
')
If verification of results indicates that Technical Specifica-tions have actually been exceeded or are in danger, of being
- exceeded, the Operations Shift Supervisor should be notified immediately, along with any recommended corrective actions.
a)
IIegin a detailed chronological record of sampling, corrective actions and notification of supervisory personnel.
PEOPLE.
~. SERVING PEOPLE.
FORM 1008 REV. 1/78
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~ C ~ ~ ~ 1 f 1 ~f Laboratory Personnel September 1, 1981 Page 3 1) For analyses performed daily, 2/wk or 3/wk: a) Verify results if necessary b) Take correction action as soon as possible. c) Notify me as soon as practicable d) An evaluation should be made to determine the necessity for increased surveillance, in order to monitor the effects of corrective ~ction. 2) Analyses performed 1/wee%< or less: a) .Corrective action should be initiated during the same day as the condition is verified. b) Results of corrective actions should be verified by the end of the following working day. c) An evaluation should be made to determine the necessity for increased surveillance. III. Trends
- Trends, once established, are normally very consistent and predictable.
- Thus, trends can be used as a very effective means for controlling chemistry.
1) Whenever trends indicate that a system may fall outside of normal specifications b'efore the next scheduled
- analysis, corrective action should be initiated prior to actual confirmation of the out of specification conditions.
2) Notify me, whenever a valve changes drastically (i.e. +50%) for no apparent reason. An investigation into the cause should be made so that corrective action, if required, can be initaited. 3) Long tern trends are not as easily noticed;
- however, every effort should be made to recognize a trend of this type leading to out of specification conditions.
IV. ~Summer 1) Deviations from Technical Specifications will be given the ut-most priority and immediate attention of laboratory personnel 2) All laboratory personnel should be aware of the parameter limits for those systems under their suiveillance. 3) When evaluating changes in parameters, investigate other parameters that may help to verify your results' fa ~ ~ I ) ~ I ~ ~ Laboratory Personnel September l, 1981 Page 4 4) Evaluate hov out of specification conditions may affect other parameters or systems. 5) Take corrective action as soon as possible and verify that the corrective action taken is adequate. 6) Whenever possible, take corrective action prior to actually reaching out of specifications conditions. 4 7) Keep me informed of all out of specifications conditions, . corrective actions, abnormal trends, etc. 8) Nofity me at any time of the day or night if an abnormal occurrence or Technical Specification violation (pertain-ing to laboratory surveillance) is reached. 9) Do not hesitate to call for advice at any time. e-8. R. A. Leineke 3 & 4 Lab Supervisor S. Wade, Jr clear Chemistry Supervisor. I 0