ML19331B913

Forwards Repts Summarizing 1980 Type A,B & C Containment Leak Rate Test Results.Includes 1980 Refueling Outage Type B & C Local Leak Rate Test Summary

ML19331B913
Person / Time
Site:	Fort Calhoun
Issue date:	08/08/1980
From:	William Jones OMAHA PUBLIC POWER DISTRICT
To:	Office of Nuclear Reactor Regulation
Shared Package
ML19331B914	List: ML19331B913 ML19331B916 ML19331B921
References
NUDOCS 8008130521
Download: ML19331B913 (16)

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Omaha Public Power District -

1623 HARNEv a OMAHA. N1SRASKA 68102 m TELEPHONE 536-4000 AREA CODE 402 August 8, 1980 Director of Nuclear Reactor Regulation THIS DOCUMENT CON 1AINS U. S. Nuclear Regulatory Connission P00R QUAUTY PAGES Washington, D. C. 20555 i Attention: Distribution Services Branch, DDC, ADM

Reference:

Docket No. 50-285 Gentlemen:

In accordance with Fort Calhoun Station Technical Specifications and 10 CFR 50, Appendix J, please find enclosed twelve (12) copies of reports summarizing the Fort Calhoun Station's 1980 Type A, B, and C containment leak rate test results.

Sincerely, a 4kf47 W.C./! Jones Division Manager Production Operations WCJ/KJM/BJH/PRT:jmm Enclosures cc: LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Avenue, fi. W.

Washington, D. C. 2T,36 8008130 6 21 P

1980 REFUELIllG OUTAGE TYPE B AND TYPE C LOCAL LEAK RATE TEST Sulf 4ARY As part of th'e 1980 refueling outage, local tests were performed on the reactor containment building penetrations in accordance with Fort Calhoun Station-Technical Specifications Section 3.5 and 10CFR50,-Appendix J. The testingwas done to identify, measure, and, if required, initiate maintenance on potential reactor containment leakage paths, and to ensure that this total

. leakage does not exceed the Technical Specification limit of 0.6 La (Leakage

~ Allowable), 62,951 sccm (standard cubic centimeters per minute). The final local leakage as measured from all-local leakages was 23,872.10 sccm. The leak-ages are tabulated in the report and on the attached Tables I through V.

-The Type B Tests were conducted by pressurizing the local containment penetration boundaries with air or nitrogen (for electrical penetrations) to Pa,-60 psig accident pressure, and measuring the flow rate which is required

.to maintain the test volume at Pa.Thiu f;ow rate is assumed to be the local containrent leak rate. The leak rate measurement system uses a series of cali-brated rotameters to determine the leakage. -

The Type B Tests are conducted to measure the leakage through the con-tainment mechanical and electrical penetration seals, and containment build-ing resilient sealed penetrations. .The tests are conducted as part of the Fort Calhoun Station Surveillance Testing Program.

The Fuel Transfer Tube Leak Rate Test (ST-CONT-2F.4) was conducted on l 1

January 26, 1980, and April 7, 1980. The measured leakage is tabulated on Table I.-

l

The electrical penetration leakage was checked in accordance with sur-veillance procedure ST-CONT-2 F.5 using nitrogen as the pressure media (see Table II).

The mechanical penetration sleeving was leak tested in accordance with surveillance procedure ST-CONT-2 F.2. The leakages are tabulated on Table III.

The equipment hatch was tested using surveillance procedure ST-CONT-2 F.3 prior to its initial removal and following each replacement. The results are tabulated in the attached Table IV.

The personnel access hatch was tested in accordance with station surveil-lance procedure ST-CONT-2 F.1, the reduced pressure test; daily test results are on file at the Fort Calhoun Station. The Personnel Air Lock (P.A.L.) was also leak tested twice (every six months) per ST-CONT-2 F.2. The leakage is tabulated below:

Date Tested Leakage June 30,1979 19113 sccm January 10, 1900 ..

O secm The Type C station surveillance tests ST-CONT-3 F.1, F.2, and F.3 were performed to measure the leakage of the containment isolation valves. The tests were conducted using air as the test medium (with the exception of M-16 shutdown .

cooling, M-94 and M-95 main steam, and M-91 and M-97 auxilliary feedwater). ' "

Maintenance was required on two mechanical penetration (M-93, M-95) and on the valves associated with penetration!. M-10, M-13, M-45, M-48, M-2 and M-42. The work done on these penetrations and valves is described in the accom-panying report.

TABLE I TYPE B TEST FUEL TRAf1SFER TUBE LEAK RATE TEST As Found 1/26/80 2100 sccm As Left 4/07/80 0 ode 4

6 *

.+

_ , ._m.

, . TABLE II TYPE B TEST Penetration Testing' Electrical Penetrations Penetration As Found As Left A-1 0 0 A-2 0 0 A-4 0 0 A-5 0 0 A-6 0 0 A-T 0 0 A-8 0 0 A-9 0 0 A-10 0 0 A-ll 0 0 B-1 0 0 B-2 O O _

Bh 0 , , ,

O B-5 0 O

B-6 0 0 B-T 0 0 B-8 0 0 B-9 0 0 B-10 0 0 B-11 0 0 C-1 0 0 C-2 0 0 C4 0 0 C- 5 0 0

Penetration Testing Electrical Penetrations Penetration As Found As Left C-6 42 BBL /m = 16.6 sec/m As Found C-7 0 0 c-8 0 0 c-9 0 0 c-10 0 0 C-11 0 0 D-1 0 0 D-2 0 0 D4 0 0 D-5 0 0 D-6 32 BBL / min = 11.85 sec/m As Found D-7 0 0 I,- 8 0 0 D-9 0 0 D-10 0 0 D-ll 0 0 ~

E-1 0 0 E-2 0 0 Eh 0 0 E-5 0 0 E-6 0 0 E-T 0 0 1

E-9 0 0 E-10 0 0 l

E-11 0 0 I

5

.. 1 Penetration Testing Electrical Penetrati.ons Pentration As Found -

As Left F-1 0 0 F-2 0 0 F-4 0 -

0 F-5 0 C-F-6 0 0 F-7 0 0 F- 8 0 0 F-9 0 0 F-10 0 0 F-11 0 0 G-1 0 0 G-2 0 0 G-3 0 3

~~

Gh 0 3 H-1 0 0 H-2 ~0 0 . ..

'~

H- 3 0 0 Hh 0 0 E-HCV- 38 3-3A 23 BBL / min = 9.2 sec/m As Found E-HCV-383- 3B 7 BBL / min = 2.8 sec/m As Found E-HCV-38 fha 2 BBL / min = 0.8 sec/m As Found E-HCV-383 hB 4 bbl / min = 1.6 sec/m As Found 6'

l-

TABLE III

, . . TYPE B TEST Penetration Testing Mechanical Sleeve Penetration -As Found As Left HCV-383- 3 2831.7 sec/m As Found HCV-383 4 43 sec/m As Found M-1 0 0 M-2 0 0 M-3 0 0 M4 0 0 M-5 0 0 M-6 a 0 M-7 0 0 M-8 0 0 M-9 0 0 M-10 J 0 M-11 10 BBL = 4.08 sec/m As Found M-12 0 0 M-13 0 -

0 M-14 0 . 0 M-15 0 0 --

M-16 0 0 M-17 0 0 M-18 0 0 M-19 0 0 M-20 0 0 M-21 0 0 M-22 0 0 M-23 0 0 M-24 0 0 M-25 0 0 7

1  ;

Prnstration Testing Mechanic 11 Sleeve Penetration As Found As Left M-26 0 0 M-27 m 0 0 M-28 0 0 M-29 0 0 M-30 0 0 M-31 0 . O M-32 0 0 M-33 0 0 M-34 0 0 M-35 0 0 M-36 0 0 M-37 0 0 M-38 0 0 M- 39 0 0 M ho "O O -

M hl 0 ... O M h2 0 0 M h3 0 0 ,,

M h4 0 0 M-h5 13 BBL /m = 5.2 sec/m As Found M h6 0 0 M-h7 0 0 M h8 19 BBL /m = 7.6 sec/m As Found M 49 h6 BBL /m = 18.4 sec/m As Found M-50 0 0 M-51 0 0 M-52 143 BBL /m = 39.72 sec/m As Found M-53 121 BBL /m = 33.61 sec/m As Found 8

Penstration T: sting Mechanical Sleeve Penetration As Found As Left M-sh o o M-55 0 0 M-56 0 0 M-57 0 0 M-58 0 0 M-59 0 0 M-60 0 0 M-61 0 0 M-62 10 BBL /m = 4 sec/m As Found M-63 0 0 M-64 0 0 M-65 0 0 M-66 o o M-67 0 0 M-68 , ,0 0 M-69 0 o M-To 0 0 M-71 0 0 -

~

M-72 0 0 M-73 2 BBL /m = 0 77 sec/m As Found i

M-74 0 0 M-75 0 0 M-76 0 0 M-77 0 0 M-78 0 0 M-79 0 0 M-80 0 0 M-81 0 0 M-82 o o 9

Pen tration Testing Mechanical Sleeve Penetration Aa Found As Left M-83 0 0 M-84 0 0 M-85 43 BBL /m = 15 92 sec/m As Found M-86 0 0 M-87 0 0 M-88 0 0 M-89 0 0 M-90 40 BBL /m = 14.28 sec/m As Found M-91 49 BBL /m = 17.5 sec/m As Found M-92 0 0 M-93 0 0 M-94 3150 sec/m 3h00 sec/m M-95 123,457 sec/m o M-96 0 0 M-97 t 0 M-98 0 .., o M-99 0 ,

0 9 O 10

TABLE IV TYPE B TEST EQUIPIlEllT HATCH "0" RIllG SEAL TEST As Found 1/20/80 0 1/28/80 0

.*g 9

e e 9

i

a o- TABLE V PIPIrlG TYPE C TEST Penetration As Found As Left After Maintenance M-2 80 BBL / Min = 32.65 seen 15.9 seem M-7 0 M-8 0

• • M-9 0 M-10 800 scem 0 M-11 0

• • M-12 0 M-13 147,247.6 scem o M-lh 11 seem M-15 8.97 seem M-16 1h0 scem M-18 0 3.26 scem*

M-19 .0 0*

-M-20 .82 scen M-22 0 M-2h 0 - -

M-25 0 M-30 0 o*

M- 38-1 25.52 seem M- 38-2 8.27 seem M-38 Total 33.79 seen M- 39 0 M 43 0 M 45 2000 seem 0 M 46-1 10. 34 seem M 46-2 0 1

1

.l lg:. ^ i s

jt Piping -

Penetration- As Found As Left f After Maintenance

.M-46-Total- 10.34 seem

'M-47-1 -

0 M-47 0

?

M-47-Tota 1 0-

'M-48 220 0 4

M-48-2 1400 0

-M-48-Total 1620 4

M-49 0

-M-50-1 48.27 4 M-50-2 90

! M-50-Total- 138.27 M-51-1 6 scem

.M-51-2 77.58

(

M-51-Total- -- 83.58

-M-52-1 20 0*

1 M-52-2 69.69 0*

-M-52-Total 80.69 scem 0* * * ' ~

-M-53 0-M-57-l' 18.89 seem 10.55 scem* Valve Cycled M-57-2 .7.5 scem 14.44 scem*

-M-57-Total 26.39-scem 24.99 scem*

~M-58. .l.65 seem 1500 scem*

-M-63 0

+ ~

'M 3.61 sccm 1.22 seem*

'M-72 Normal Capped O Type B Test M-73 4.61

-M-74 0 f

Y

g _, .

• Piping Penetration- As Found As Left After Maintenance M-79 -2.59 M-80 O' M-86 'O M-87: 6600 seem M-88. O M-89 0

-**M-91 28.96

~ M-93 200 seem

• • M-94 4500 seem

• • M-95 5.175 sccm M-96 2700 seem

• • M-97 80 scem HCV-383-3 O r

HCV-383-4 0 M-42. 1350 seem 1300 seem

'* The penetration valves were blocked for the containment ILRT and retested following completion of the ILRT.

• • ' Not included in .6 La- -

_ - . . . . - . _ - - - . _ = _ - - . . . . . _ - . . _ _ - . - . - _ . . - - - . . - - - - _ - . - - - . - - - . - - - _ . - . . - - - - . . - _ _ - - - _ _ _ - - - _ - - _ _ - . - - _

1980 REFUELIrlG OUTAGE TYPE B AftD C TESTS

~WHICH FAILED TO MEET THE ACCEPTAflCE REQUIREriENTS Type B and C Tests which failed to meet the acceptance criteria and

the adjustments or repairs made to these are reported below.

~The mechanical penetration sleeving was leak tested in accordance with ST-C0flT-2 F.2. During 'the performance of this test, both main steam pene-trations (M-93 and M-95) were found to be leaking (M-95 leakage was 123,457 ssc/ min.). Further investigation showed the leakage on the penetration was on the outer bellows assembly only. The bellows were welded which resulted in a leakage of 3400 scc / min. and a reduction of leakage to O ssc/ min. on M-95. The leakages are tabulated on Table III.

. Maintenance was required on the valves of five penetrations.

RC-2A'and RC-2B blowdown penetrations M-10 and M-13 required a rebuilding and repacking of the valves. T,he leakage was reduced from 800 sccm to 0 sccm for M-10 and from 147,246 sccm to Zero leakage on M-13. The rebuilding con-sisted of trim replacement and new gaskets.

Valve HCV 2504A and HCV 2504B on penetration M-45 (RC-2A sample) ha[' the' valve trim replaced and were repacked. Valve HCV 746A on penetration M-48 (containment relief) had the trim replaced and the valve repacked. HCV 204 on penetration M-2 (RCS letdown) was found to have the seat installed improp-i erly. The valve seat was reinstalled properly. The leakages are tabulated in Table V.

Penetration M-42 and M-57 valves were cycled to verify proper closure.

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