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Category:TECHNICAL SPECIFICATIONS & TEST REPORTS
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[Table view]
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[Table view] |
Text
_
LEAKAGE REDUCTION PROGRAM
SUMMARY
REPORT FOR CORE SPRAY SYSTEM - (E2100) i DETROIT EDISON COMPANY FERMI-2 POWER PLANT REPORT NO.
E2100-85-01 l
1
~f I
Prepared By:
~
Date:
3 - //-8d
'Isl ProgEYms Supervfsor Approved By:
'l f//c[jd Plant Manager P
4 LEAKAGE REDUCTION PROGRAM REPORT FOR 1
CORE SPRAY SYSTEM - (E2100)
INTRODUCTION: Both the Fermi-2 Technical Specifications, paragraph 6.8.4.a.2, and the Fermi-2 FSAR, Section H.III.D.l.1, require i
that leakage from systems outside primary containment that could or would contain highly radioactive fluids, be reduced and maintained to as-low-as-practical levels.
To demonstrate the leak tight integrity of the Core Spray System, a system leakage, test is conducted once per reactor refueling 1
(apprc'.timately once every 18 months).
This report is for the initial leakage test.
j i
REFERENCES:
1
- 1) Dwg. No. EM721-5707, " Core Spray System -Functional l
Operating Sketch".
- 2) Procedure No. 43.203.01, " Division I - Core Spray System Leakage Monitoring Test" (A copy of this procedure is on file at the plant).
- 3) Procedure No. 43.203.05, " Division II - Core Spray System Leakage Monitoring Test" (A copy of this procedure is on i
file at the plant).
j TEST DESCRIPTION: Each Core Spray Division was tested by two separate procedures.
The major portion of Core Spray. piping.
i was inspected by procedure 43.203.01, for Division'I, and procedure 43.203.05, for Division II.
With the Core Spray System in the test flow mode, and at rated pressure and flow, the system was inspected and all leakage measured and recorded.
The remainder of the system ( from the E21-F005A&B i
valves to containment ) was inspected using. procedure 43.000.09, Reactor Pressure Vessel System Leakage Test, with all leakage being measured and recorded.
This procedure was 1
performed twice, initially on 5-15-85 and again on~6-7-85.
Each test was conducted at normal operating pressure.
Subsequent to the initial test corrective maintenance was performed to reduce leakage further.
TEST RESULTS:
I i
DIVISION - I l
-Instrument E21-N004A leaked at the threaded fitting and E21-F005A leaked at packing giving a total system leakage rate of 38.25. drops per minute.
Maintenance performed corrective repairs to the valves to reduce system leakage to 30.25 drops
/ minute total.
Page 1 i
,,,,w.,,-v,n,
--n r-
4 1
LEAKAGE REDUCTION PROGRAM REPORT FOR CORE SPRAY SYSTEM - (E2100)
J l
-DIVISION - II i
No corrective maintenance was required for this system, the total system leakage rate of 13.5 drops / minute is well within the acceptable criteria.
TEST RESULTS
SUMMARY
DIVISION - I Corrective maintenance yielded a net reduction in total system' leakage of: 8 drops / minute.
As Found Leakage Leakage Reduced By As Left Leakage Maintenance Activity 38.25 drops / min.
8 drops / min.
30.25 drops / min.
DIVISION - II No corrective maintenLnce was requireci for this system, the total system leakage rate of 13.5 drops / min. is within the acceptance criteria.
i f
ACCEPTANCE CRITERIA:
The general leakage criteria to be applied I
during the first fuel cycle as the basis for instituting i
corrective action in the form of corrective maintenance.shall be 80 drops / minute for each division. Per the EF-2 FSAR, this leakage criteria will be further evaluated at the end of the first refueling cycle to determine the long range leakage reduction program criteria.
This will allow experience gained during the intial fuel cycle to be factored into the long range criteria.
4
-t l
Page 2
LEAKAGE REDUCTION PROGRAM REPORT-
^
-FOR CORE SPRAY SYSTEM - (E2100)
~
TEST RESULTS CORE SPRAY DIVISION I:
Final leakage results from procedures; 43.203.01 and 43.00.09.
Procedure 43.203.01 (Completed 3-19-85)
Examination Item Leakage Amount E21-F036A Packing Leak 3 drops / Min.
4 E21-F020A 2 drops ~/ Min.
E21-F020C 2 drops / Min.
E21-F031A 2 drops / Min.
E21-N003A Valve Block 2 drops / Min.
i E21-N001A Packing Leak 1 drop / Min.
E21-N006A Threaded Fitting 2 drops / Min, i
E21-F005A Packing Leak 1.25 drops / Min.
l i
Sub Total:~15.25 drops / Min.
Procedure 43.000.09 (Completed 05-15-85)
Examination Item Leakage Amount i
E21-N004A Threaded Fitting.
3 drops / Min.
E21-F005A Packing Leak 20' drops / Min.
Sub Total: 23.00 drops / Min.
(Subsequently Reduced) i Procedure 43.000.09 J(Completed-06-07-85) - Subsequent to i.
Corrective Maintenance j
Examination Item Leakage Amount E21-N004A Threaded Fitting 15 drops / Min.
Sub Total:
15 drops / Min.
Total combined leakage for this system 30.25 drops / Min.
Total
~
i a
Page 3 i
LEAKAGE REDUCTION PROGRAM REPORT FOR CORE SPRAY SYSTEM - (E2100)
TEST RESULTS CORE SPRAY DIVISIOM II:
Final leakage results'from procedures: 43.203.05 and 43.000.09.
. Procedure 43.203.05 (Completed 6-20-85)
Examination Item Leakage Amount E21-F036B Packing Leak 2 drops / Min.
E21-F037B Packing ~ Leak 3.5 drops / Min.
E21-F037D Packing Leak 2 drops / Min.
E21-F031B Packing Leak 5 drops / Min.
E21-N003B Seat Leak 1 drop / Min.
i Sub Total:
13.5 drops / Min.
J l
Procedure 43.000.09 (Completed 05-15-85 & 06-07-85)
No leakage noted from 43.000.09 on test completed on 5-15-85
~
i and 6-07-85.
The total combined leakage for this system from all components within the test boundary was 13.5 drops / minute.
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