ML20214J381

Leakage Reduction Program Summary Rept for HPCI Sys (E41-00)

ML20214J381
Person / Time
Site:	Fermi
Issue date:	03/12/1987
From:	Lenart D, Shiffel B DETROIT EDISON CO.
To:
Shared Package
ML20214J375	List: ML20214J381 ML20214J399 ML20214J415 NRC-87-0006, Forwards Three Leakage Reduction Program Summary Repts for Hpci,Rcic & Standby Gas Filter Sys.Addl Repts Will Be Submitted Upon Completion
References
E4100-87-01, E4100-87-1, NUDOCS 8705280032
Download: ML20214J381 (3)

Text

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IJmKAGE REDUCTIN Pf0 GRAM SIDERIE REEGE FOR HIGI PRRRERE QXIANT DUBCTIN SYSEM (E41-90)

DETROIT EDISON COtiPNE FEM 4I-2 POWER PLN7f REPORT 10. E4100-87-01 Prepared By6 Date: 8'9"8[

ISMrogra:rs Sffervisor Approved By: b Plant !!anager Date: ' ' 7 8705280032 870522 PDR ADOCK 05000341 P PDR

LENGGE REDUCTION PPOGRAM REPORP FOR HIGH PRESSURE COOLANP INJECTION SYSTEM INTRWUCTION- Both the Fermi 2 Technical Specifications, paragraph 6.8.4.a.2, and the Fermi 2 UFSAR, Section 5.2.7, require that leakage from systens 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 High Pressure Coolant Injection System, a system leakage test is conducted once per reactor refueling (approximately once every 18 months). This report is for the initial leakage test and retest after maintenance of the High Pressure Coolant Injection System.

REFERE!CES: 1) DWG. No. 6M721-5708-1, "High Pressure Coolant Injection System-Functional Operating Sketch."

2) Plant Operations Manual 43.202.01, "High Pressute Coolant Injection System Leakage Monitoring Test." (A copy of this procedure is on file at the plant.)

TESP DeKi<1 PHON: With the plant at rated tenperature and pressure the High Pressure Coolant Injection (BPCI) System is placed in the test flow mode with the suction being taken from the Condensate Storage Tank. While in the test flow mode all instrumentation, the turbine and punps plus all system piping outrJe of containment are walked down and all discrepancies are noted. Following this HPCI is placed in the standby mode and the Torus suction valves are opened and the Torus suction piping is inspected.

TEST RESULTS: 'No conplete tests and one partial test were conducted on the High Pressure Coolant Injection System. The first test was conducted on August 31, 1985. This initial test identified leakage which was subjected to corrective maintenance; results are presented below.

Results of Initial Test Coupleted August 31, 1985.

Conoonents Leakace Amount Remarks E41-N008 1 ml per min Packing E41-F054 Small Steam Leak Packing E41-F028 Small Steam Leak Packing E41-F029 Small Steam Leak Packing E41-F059 1 ml per min Packing E41-F041 1 ml per min Leakoff Nipple 4

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Pag 2 2 E41-F042 6.5 ml per min Packing E41-F008 50 ml per min Leakoff Nipple E41-F007 500 ml per min Packing and Pressure Seal E41-F020 1000 ml per min Relief Valve Through Seat Total Leakage 1559.5 ml per min Results of Post Maintenance Test Coupleted Decenber 23, 1986 Conoonents Leakaae Amount Remarks E41-F600 1 ml per min Packing E41-F0ll 2 ml per min Pa: king Seal Water 250 ml per min Pipe Union Total Leakage 253 ml per min Results of Post Maintenance Test Conpleted February 23, 1987 A partial test was conpleted February 23, 1987, after repair of seal water piping and replacement of turbine shaft. Before the maintenance activities leakage was noted at 250 ml per min. No leakage was noted after maintenance.

TEST RESULTS SIMiMY: Corrective Maintenance yielded a net reduction in total system leakage of: 1556.5 ml per min.

LEAFAGE REDUCED BY AS FOUtO LEAKAGE MAINI'ENMCE ACTIVI'lY AS LEFT L?AKAGE 1559.5 ml per min 1556.5 ml per min 3 ml per min 4

ACCEPTAN:'E CRITERIA The general leakage criteria to be applied during the first fuel cycle as the basis for instituting corra:tive action in the form of corrective maintenance shall be 500 ml per min. 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 )

initial fuel cycle to be factored into the long range 1 criteria.

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