ML20148E835
| ML20148E835 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 11/03/1978 |
| From: | Gilleland J TENNESSEE VALLEY AUTHORITY |
| To: | Ippolito T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 7811070132 | |
| Download: ML20148E835 (17) | |
Text
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TENNESSEE VALLEY AUTHORITY CH ATTANOOG A. TENNESSEE 374o1 830 Power Building NOV 3 1978 Director of Nuclear Reactor Regulation Attention:
Mr. Thomas A. Ippolito, Chief Branch No. 3 Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Ippolito:
In the Matter of the
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Docket No. 50-296 Tennessee Valley Authority
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Enclosed is the hydrostatic pressure testing program for Browns Ferry Nuclear Plant unit 3 developed in accordance with ASME Section XI and 10 CFR Part 50.55a(g). This program addresses concerns raised in letters from George Lear to N. B. Hughes dated May 31, 1978, and from you to N. B. Hughes dated August 8, 1978, which resulted in meetings between the NRC and TVA on August 15 and 16, 1978, in Bethesda, Maryland.
Included in the enclosure is a tentative schedule for hydrostatic testing at Browns Ferry unit 3.
Very truly yours, fA' 11 e/J. E. G111 eland Assistant Manager of Power Enclosure
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An Equal Opportunity Employer 1
ENCLOSURE - Systems to be tested, code class, referenced drawings, and required testing.
. - Requests for Relief from the hydrostatic testing requirements of subsections IWA, IWB, IWC, and IWD of section XI. - Listing of tests tentatively scheduled to be performed at the end of the unit 3 refueling outage.
ATTACrDU2iT 1 This t able lists the system to be pressure tested in acc:rdance with WE r,ce t i m X I, Ar t icl e c IWA -5'D'),
IWB-F M, Ta'C -59'J), and IWD-W)0.
Pr-tehuletten identifics F>ysters, C <An Clocs, drawirgt, and s;ec1 Tic r
re erences to Code Sections fr.r test require e nts.
r Bis material vas prepared by T. Chinn, Browns Ferry.
10/23/T8
Referenced C~1e Test Recuiremants Test Systers Dresings Class I.G-52D(e) r.G 5210(b)
T4D-2'*10(b)
IVD-2h 10(e )
1 Reactor Yessel hT4317-1 1
X Mein Steam. and hT4331-1 aseoclatei hT4311-1 portions o' ET4312-1
- RCIC, LT4313-1
- HFCI, hT435h-1 Core Spray, h7W820-2 RHR hTJ31h-1
2 Reactor Vessel, 474801-1 1.2 X
X Main Steem, snd hT4831-2 associated portionshT4317-1 of: Turbine Dmins hT4337-2 and Misc. Piping, h7wo19 53-1 Sampling.
hT4303-1
- RCIC, hT4312-1 HPCI h7W311-1 Core Spray LT4813-1 CRD.
hT43th-1 RER hT435h -1 Feedveter, SLC 3
SLC hT435h-1 1.2 X
X 4
Core Spray hTJ3th -1 2
X 5
X System 6
RER LT4311-1 2
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Test 3equiremer.ts Referenced cme Test Systems Drawings Class T.*3 ;210(s)
TG *21S(b) TTC t '.V
!.~'-2 t i ? f F TQ-2 7-I S M 7
FJOI hTW31?-1 2
X 8
ROIC hTa'313-1 2
X 9
PJESU hT4356-1 3
X L~N610 h3-1 10 EECJ and associ-LTJ350-1 3
X X
ated portiens of L74859-2 BCJ hTd8hh-2 hTJS66-7 NOTES:
1.
TJB-5210(a) is a system leakes;e test performed prior to stsrtup followins:
eacc. refueling and as required by mintenance.
2 TG-5210(b) is a system hydrostatic pressure test perfomei at 10 year i
intervals and as required by mintenance.
l 3.
T40-5MO is a system hydrostatic pressure test performd at 10 year intervals, to be scheduled at various tiers in the interval for the various systems in accordance with T40-2h12 and as required by maintenance.
h.
TJD-2410(b) is a system hydrestatic pressure test performed at 10 yeer intervals and as required by mintenance.
5.
TJD 2410(c) is a syste a leakage test perfo:med within every one-third of an inspection interval (one-third of ten years).
This material was prepered by T. Chinn, Browns Ferry.
10/23/78
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AMACIDEffr 2 Attachent 2 consists of Hequests for Relier from various p;rtions of ASMR Gection XI. Subsections IWA, IVB. IWC, and IWD, as they apply to syctem pressure tests. Heller requests are numliered H(Hydrostatic)
-1 throur,h.11, This material was prepared by T. Chinn. Browns Ferry.
10/23/78
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REQUEST POR RELIEF H-1 SYSTEM -
All Systems CLASS -
1, 2, and 3 TEST REQUIREMENT - Qualified inspector in accordance with IWA-2130.
BASIS FOR RELIEF - Present TVA policy is to provide its own inspection services. TVA is a federal agea:y and, as other federal agencies, acts as its own inspector and is not subject to state or other non-federal inspectors.
ALTERNATE TESTING - TVA vill provide its own independent review of the Section II program through its central office staff in Chattanocga.
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GLB:DB 10/23/78
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REQUEST FCR RELIEF H 2 SY3 TIN -
All Systems CIASS -
- 1,2,3 e
TIST REQUIRDENT -
Paintaining test pressure and temperature for four hours prior to examination per IWA-3210(a).
MSIS tm RELIEF -
19r(7 Edition of Seetion XI, Article NA-5000, allows pressure and temperature to be mintained for 10 minutes prior to examination on exposed piping.
ALTERNATE TESTING - Exposed piping will be maintained at pressure and temperature for 10 minutes before beginning examination.
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i This material was prepared by T. Chinn, Browns Ferry.
10/23/78 l
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i IlWUi!3T FOR IIT.I.D.F 11-3 G Y'iTiM -
thin Steem beyond out-boerd !CIV; steem to Beactor Feed Purp Turbine :. MAE. Of T-Gas Prehenter; Core Spray (high prer:sure piping downstreen of FC*/ 75-23 ani WV 75-51); PJF1 (hich pressure piping downstren er FCV Th-52 and FCV Th f4); FPCI (piping downstreen or FCV 73 kh); RCIC (pipins; downstreen of FCV 71-39).
C1/SS -
2 TE:3T IURUIRElfr2rf -
Hydro et 1.25 x Desir,n Pressure BTSIS FOR RELEF -
This pipina vill ' +este1 et the ca.e tira es the hydro for tha Class 1 Fenet,r Yessel and assrciated pipir.g, due to valve 1ccatiene arcl insuf ficient test connections to test to higher pressures.
ALTEFJMTE TNTIlu - Hydro test, with reactor.essel, at 1920 cr 10h3 psig, dependent on vessel te=perature.
L This saterial was prepared by T. Chinn, Brovns Terry.
10/23/78
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REQUIET FOR RI: LIEF ll b "Y"TFJ1 -
Stendby Liquid Control, Core Spray, CRD Hydraulic System, Rim, HPCI, RCIC CIASS -
2 TF.ST REQUDIEMENT -
Maintaining test temperatures at 10'fT per IWC-5220(a)
MSIS FOR RELIEF -
Standby Liquid Control. Core Spray, HPCI, and RCIC are tested only at 10?% of the pressure seen during periodic surveillance testing, per lWC-5220(e), and as such are nat subject to brittic fracture et those pressures.
CRD and 148 piping will be run at essentially ambient temperatures (approx, 80-850F) and, are not subject to fracture at this temperature. Testing at this temperature, however, is more stringent than testing at 100 F and above.
ALTFilNATE TESTING - Testing at available test temperatures as stated above.
This rmterial was prepared by T. Chinn Browns Ferry.
10/23/78.
PEOUEST FOR liET,UF 115 3Y3TW1 -
RHRSW j
l Cth33 -
3 TIST RE0lfIRDERP -
Providing isolation valvec for buried piping and conducting a loss of pressure test for component leakage.
DA313 FCR REI,IEF -
There are no installed connections for providing a loss-
- r-preer tre test on buried piping. Also, the downstream isolation valw (butterfly) on each section of buried pipe is not desiged f or minical leakage to conduct this type of test.
AI.TEltMATE TESTDiG - This pil: : Me veter rl:v and pressure f or long periods of time during cold shutdowns. Any substantial leakage in buried piping would be evidenced at this time.
Also, the pressure test for this pipins; is performed by deedheading an Riftl3W pump. The pump not developing at or near design deedhead pressure would indicated leeking piping. Also, pump testing required by Suboection IWP of the Code would identify substantial leakage based on degradation of pump perforennee on two different pumps supplying the same piping (Al and A2, B1 and B2, C1 and C2, D1 end D2).
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This material was prepared by T. Chinn, Browns Ferry.
10/23/78
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REGUEST POR RELIEF H.6 fiY3 TEN -
EECW CIASS -
3 TIOf REQUIRM H T -
Providing isolation valves for buried piping and conducting a loss of pressure test for component leakage.
BASIS FOR RELIEF -
The downstream isolation valve (butterfly) on each section of buried pipe is not designed for minimal leakage to conduct this type of test.
ALTERNATE TE3 TING-This piping has water flow and pressure at all times during normal operation. Any substential leakage in buried piping would be evidenced at this time. Also, the pressure test for this pipin6 is performed by deadheading an EECW pump. The pump not developing at or near design deadhead pressure would indicate leak-inq piping. Also, pump testing required by Subsection IWP of the Code would identify substantial leakaSe based en degradation of pump performance on two diffe-rent pumps supplying the same piping (A3 and C3, B3 and D3).
This material vas prepared by T. Chinn, Brovns Ferry.
10/23/78
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I PQUEST FOR HELIEF 117 1
i GYSTEM -
. RHRSW (Low Pressure Piping Only) j CLASS -
3 TEST REQUIRDGNP -
System test pressure sit 1.10 x design pressure.
BASIS FOR RELIEF -
There are no suitable test connections for installing a hydro pump to pressurize to 1.10 x design pressure.
Also, to do this tectitig both pumps supplying a header would have to be isolated. This 10 not acceptable in accordance with Technical Specification b.5.C.2
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ALTER!! ATE TESTING - Piping will be test.ed et the dead-head pressure of onc RHRSW pump.
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This material was prepared by T. Chinn, Browns Ferry.
10/23/78 t
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s ImQUEST FOR HELICF H-8 SYSTEM -
EECW CTASS-3 o
TEST REQUIRFJ4ENT -
System test pressure at 1.10 x design pressure.
BASTR FOR RELIEF -
There are not suitable test connections for installin6 a hydro pump to pressurite to 1.10 x design pressure.
In addition, there is no postulated event that could cause overpressurization of this piping except for massive tube railure of an RHR Pump Seal Heat Eichanger.
l ALTERNATR TESTING - Piping will be tested at the dead-head pressure of one EECW pump.
I This material was prepared by T. Chinn, Browns Ferry.
10/23/T8
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IUCQUEST FOlt RELTr711-9 3Y3TD4 -
FECW CIAG3 -
3 TB3T RBrihitEMErff -
!!yttro testinr, or short ocetions or piping to/from the following components:
Control Bay Chillers - between:
3-67-763 & 3-67-76';
3 67-770 & 3-67-772 Un tt 3 Dierela -
Detween:
3-67 692 & 3 67 676 3-67-701 & 3 67-79h 3-67-712 & 3 67-716 3-67-721 & 3 67-724 IASIS FOR RET.TEF -
The Control Boy Chillers are not saiety related equipment, and the EECW serves otily oc an alternate heat sink for the Chiller Condencer. There is no way to postulate overpressuritation of this piping.
Due to the valving arrangement there is no practical way to tent this piping. The piping to the Diesels can't be practically tested without removing oil four diesels from service at the same time, which violates Technical Specifi-entions. There is no postulated event which could overpressurize this piping.
ALTERNATE TESTING - None This material was prepared by T. Chinn, Browns Ferry.
10/23/78
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REQUEST POR RELIEF H-10 SYSTEM -
All Systems CLASS -
1, 2, and 3 TEST REQUIREMENT - Pressure tests following repair to components in accordance with IWA-b210.
BASIS FOR RELIEF - Perfomance of a hydrostatic pressure test after minor repairs by velding is unnecessary. An increase in the level of safety of the component is not realized. In addition, other nondestructive tests (PT,17f, etc.), if applicable, shall be employed on a case-by-case basis in accordance with documented TVA repair procedures which are maintained by a QA program in accordance with IWA-h100(b).
ALTERNATE TIETING - The guidelines set forth in IVA hh00 of the 1977 Edition, Summer 1978 Addenda, of Section II shall be followed.
Components which require repairs as a result of a pressure test shall be pressure tested. The reactor pressure vessel shall remain under the guidelines set forth in IVA h210 of the 19Th Edition, Summer 1975 Addenda, of Section II.
GLB:DB 10/23/78
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REQUEST FOR RELIEF If-J1 SYSTEM -
All Systems ClJPG -
1 TEST REQUIREMENT - Prennure tento folleming repair to components which cannot be isolsted from the reactor vessel, IWA-kh00, 197T Editica, Dwner 1778 Addenda.
BASIS FOR RELIEF - Performsnee of a hydrostatic pressure test on components, t
following repairs by welding, which cannot be isolated from the reactor vessel is impractical. This would involve preosure testing the reactor vessel and all porties of Class 1 piping.
ALTERNATE TESTING - The corsponent M1. ';? leak tested in accordance with '.
IWA-5000 and IWD-5221.
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GLB:DD 10/23/78
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ATTACDGM 3
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1 The folleving is a list of the tests new tentatively scheduled to be i
.I perfomed at the end of the Erevns Ferry unit 3 refueling outage.
t 1.
SI-3. 3.1. A (Reactor I.eak Check) 2.
51-3.3.9 (EPCI - Class 2 Eydrestatic Pressure Te.st) 3.
51-3.3.~10 (RCIC - Class 2 Eydrostatic Pressure Test) i 4
SI-3.3.14.A and 3 (EECW Unit 3, Serth aad South Eeaders - Eydrestatic Pressure Test) i e
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