ML19259C241
| ML19259C241 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 05/11/1979 |
| From: | Gilleland J TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 7906140450 | |
| Download: ML19259C241 (8) | |
Text
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m SMG --73;g TENNESSEE VALLEY AUTHORITY 8C M' CH ATTANOCGA. TENNESSEE 374o1 500C Chestnut Street Tower II.
May 11, 1979 D
DC F
7 52 G
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mQ Mr. James P. O'Reilly, Director e
p r' Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission
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Region II - Suite 3100 ro 101 Marietta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
OFFICE OF INSPECTION AND ENFORCEMENT BULLETIN 79-04 By latter dated May 1, 1979, you were provided with a partial response to the subject bulletin for the Browns Ferry Nuclear Plant.
Enclosed is the additional information providing a complete response to the subject bulletin.
Very truly y rs,
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r
'J. E. Gilleland E""
Assistant Manager of Power Enclosure cc:
Mr. Norman C. Moseley, Director (Enclosure)
Division of Reactor Operations Inspection Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 2279 147 d,
7906140 W 0 p/g/fg An Equal Opportunity Employer
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ENCLOSURE SUPPLEMENTAL RESPONSE TO IE BULLETIN 7.9-04 INCORRECT WEIG1tTS FOR SWING CHECK VALVES MANUFACTURED BY VEIAN ENGINEERING CORPORATION BROWNS FERRY NUCLEAR PLANT (DOCKET NOS. 50-259, 50-260. AND 50-296) 1.
RCIC System Piping Reanalysis Using Correct Weight of Velan Swing Check Valves (includes TPIPE computer program output and RCIC System Isometric Drawing No. 47W335-17) 2.
Sumary of Stresses and Loads and Allowable Limits for the Piping and its Supports (includes Support Load Tables for units 1, 2, and 3) 2279 148 O
O
l 1.
RCIC PIPING REANALYSIS USING CORRECT WEIGitT OF VELAN SWING CilECK VALVES TPIPE Computer Program The pump suction piping of the Reactor Core Isolation Cooling (RCIC)
System at the Browns Ferry Nuclear Plant was reanalyzed using the most recent available information regarding the weight of the Velan swing check valves for that system.
(This information was provided to TVA by Velan Engineering Corporation by telex on April 25, 1979.)
The piping was analyzed for the deadweight and seismic conditions using the TPIPE computer program.
(A description of the TPIPE computer program is presented in the Sequoyah Nuclear Plant FSAR Section 3.9.2.5.)
Stress combinations were computed for ANS1 B31.1, equations 8, 9U, and 9E.
These combinations were then compared to the appropriate allowable stresses. The maximum ratio of pipe stress to allowable stress as computed by TPIPE for this section of RCIC piping was 0.15 for equation 9E at joint number 36. The output of the TPIPE computer program provides a summary of stresses and loads and their allowable limits for the reanalyzed RCIC piping. This output is provided to you for your infor-mation.
Isometric Drawing The colored portion of the isometric drawing shows the reanalyzed RCIC piping. Member numbers (shown within hexagons) and node numbers (shown within diamonds) correspond to the member numbers and node numbers in the TPIPE computer program output. The Velan swing check valve in the RCIC piping is identified as member number 17.
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Summary of Stresses and Loads an3 Allowable Limits for the Piping and its Supports The Support Load Tables show the results of TVA's reevaluation of all P pe supports affected by the revised Velan valve weights. These i
tables, one for each unit, provide a summary of stresses and loads and the allowable limits for the affected piping and supports.
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SUPTCDT LCAC TAELE Ch!T 1 E
Support Mftr Hanger Old Loads New Icads Drawing size and Fed size and Max Allowable 3
valve sy;1em No.
Hot Cold Hot Cold No.
Lead _Fange Allcw. Icad Segl icad flt) 47A458-87 NA 1/2*3 11308 410 7 5-570 A CS ? ump A Min H-51A 900 1388 71cw 47A458-86 NA 1/2*8 11308 410 75-5702 Cs Furp E Min H-51 908 1388 Plcw s
75-57CC CS Purp C Rin H-31 34778 35768 35258 36268 47A458-78 Power Fiping 609 (2) 1"f (2) 49608 Hgr ctris dsgn Flcw 900-2253 75-57 CC CS Purp D Min H-11 34778 35768 3258 36268 47 A 45 8-62 Fewer Piping 609 (2); 1"S (2) 49608 Hgr ctris dsgn Elcw 900-2250 71-502 FCIC rurp H-29 4140 4228 3078 3148 47A456-65 Pcwer Piping 605; 5/8"#
18108 Egr ctris dsgn 222-555 Eucticn 47A456-66 NA 5/8"3 18108 Hgr ctris degn 71-502 FCIC Purg p-30 10578 13178 Suction 71-502 FCIC Purp H-31 9618 9808 10398 10588 47A456-67 Pcher Piping 608; 3/4"#
27108 Hgr ctris dsgn r
600-1500 Eucticn 47A456-68 NA 5/8"8 18108 Egg ctris dsgn 71-502 FCIC Purg H-33 6048 7548 Euction 71-502 FCIC Turp H-34 3318 3350 3718 3758 47A456-69 Power Tiping 604; 1/2"2 11300 Hgr ctris dsgn 159-398 Suction 30008 Cces not apply E-P1805-4Sh1 B-P Pestraint ESEA-3 71-502 FCIC Pump R-4 N-S N-S Euction 2008 6fC8 74-691 PHP Head Spray CRhBH-13 6728 8268 7508 9048 B-P 230c B-P VS22-9; 5/8"2 18108 Rgr ctris dsgn 587-953 N
N N
46 SUPPCRT LCAC TAELE (Ccntinued) t UNIT 2
{
5 Support Nftr
[
Hanger Old Lcads New Leads Drawing Eize and Pcd Elze ar.d Max A11csable Valve tvete*
No.
Hot Cold Hot Cold No.
Lcad Pange Alles. Icad Strl Icad(It) 47A458-187 NA 1/2"3 1130s 310 7 5-57 CA CS Pump A Min H-51A 900 1388 71cw 1388 47A458-186 NA 5/8"s 18108 Hgr ctris dsgn 7 5-570B CS Furp E Min H-51 908 Ficw 75-570C CS Purg C Pin P-38 34878 35768 35250 36268 47A458-178 Pcwer Fiping 609 (2); 7/8"S (2) 37708 Hgr ctrls dsgn Flcw 900-2250 75-57 0C CE Purp D Min H-11 34778 35768 35258 36268 47A458-162 Pcser Piping 609 (2) ; 7/8"B (2) 37700 Hgr ctris dsgn Flcw 900-2250 i
71-502 FCIC Purp H-29 3750 3838 307s 3148 47A456-175 Pcwer Piping 606 5/8"s
'18108 agr ctris dsgn sucticn 300-750 47A456-176 NA 5/8"s 18108 Hgr ctris Jugn 13178 71-502 FCIC Purp H-30 10178 Eucticn 71-502 FCIC Fump H-31 9618 9808 10390 1058B 47A456-177 Pcwer Piping 608:
3/4"3 27108 Hgr ctris osgn Euction 600-1500 7548 47A456-178 NA 1/2"3 11308 Egr ctris dsgn 71-502 FCIC Fump H-33 6048 Euctica 71-507 FCIC Furg H-34 3319 3350 3718 3758 47A456-179 Grinnell e-268-5 1/2"s 11308 agr ctris dsgn Euction 221-378 30008 Eces not apply D-P1805-4Sh1 2-P Pest raint HSEA-3 N-S'71-502 FCIC Purg R-4 N-S sucticn 2000 6608 Nrs)74-691 pHD Head Spray DPHRH-13 6728 8269 7508 9048 B-P 230c 2-P VE2P-9; 5/8"s 18108 1,425 51'l-953 N
4 N
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SUPICFT LCAC TAELE (Centinued)
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Support Rfrr Hanger O?d Loads bes Loads Crawing Size and Pcd Size ard Max Allowable -'
valve
- System Fo.
Hot Cold Het Celd Nc.
Lead Pange A11cw. Lead Strl Icadflt!
7 5-57 CA C -Turp A Min NCT VELAN VALVES ficw 7 5-57 0E CS Furp E Min NCT VELAN VAL %ES Flcw 75-57 CC CS Furp C Min RCT VELAN VALVES Flcw i
75-570C CS Purp C Min NCT VELAN VALVES
}
Flcw 71-502 PCIC Fupp H-19 3758 3838 3078 3140 47A4 56-275 Grinnell P-269-6:
5/8"8 18108 Hgr ctris dsgn Suction 294-504 47A456-276 NA 5/8"8 18100 Hgr ctris degn 71-502 FCIC Purg H-30 10178 13178 suction 71-502 PCIC Purp H-31 5618 9808 10398 10588 47A456-277 Crinnell B-268-9; 3/4"a 2710s Hgr ctrls dsgn Euction 700-1200 t
47A456-278 EA 1/2"2 11308 Hgr ctris dsgn 71-502 ICIC Turg H-33 6048 7548 Suction 71-502 PCIC Furp H-34 3318 3350 3718 3750 47A456-279 Grinnell E-268-5 1/2"2 11308 Egr ctris dsgn '
Eucticn 221-378 E-P1805-4Sh1 2-P Pestraint HSEA-3 30008 Coes not apply N-S71-502 PCIC Purp P-4 E-S Suction 2000 4608 74-691 PHB Head Spray CRERR-13 6720 8268 7500 9048 E-P 230c B-P VS22-9 5/8"a 1810s 1,425 587-953 rs)
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SUPPORT LOAD TABLES - EXPLANATORY NOTES Valve, System, and Hanger No. - Self explanatory Old Loads, New Loads - The original support loads are tabulated as "Old Loads." The actual support loads, based on the corrected valve weights, are tabulated as "New Loads."
Drawing No.--This column refers to applicable TVA or B-P (Bergen-Patterson) drawings.
Support Manufacturer, Size, and Load Range - The manufacturers of catalog-item supports are identified. Loading range is shown for all spring supports. For Power Piping produced supports a "2" is shown in parenthesis where two spring casings make up one spring hanger.
Rod Size and Allowable Load - The manufacturers' allowable loads for each rod hanger are shown.
In addition, a snubber allowable load is shown for hanger R-4 in the RCIC System.
Maximum Allowable Structural Load - This column presents the evaluation of the structural members which support the pipe hangers. Allowable loads are based on current AISC allowable stresses and are shown whenever the structural allowable controls the support capacity.
2279 I54 B
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