ML17255A830
Text
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Topic From Panel EVAL DETAI LS TIMEl OO 1. 0 I SSUE IDENTIFICATION :
Last Updated By Last Updated Date:
Tex t Status Page :
1 BYRVB 07/01/2009 UNLOCKED Ti t l e :
OP EVAL 07- 006, AUX FEED TUNNEL COVERS I NSTALLATI ON 1. 1 IR # :
653093, 620080, 789344, 783811, 792213 and 790428 1. 2 OpEval # :
07- 006 Revision : 67 General Informat i on :
1. 3 Affected St ation(s) : Byron 1. 4 Unit(s) :
1 and 2 1. 5 System:
DS 1. 6 Component( s) Affected: Uni t 1 and 2 Aux. Feed Tunnel Fl ood Seal s.
1. 7 Detai led descr i ption of what SSC is degraded or t he nonconf ormi ng condit i on, by wha t means and when fi rst d i scovered, and extent of condition f or a ll simi l arly a f fected SSCs :
The f l ood seal covers and support e l ements f or Aux. Feed Tunnel s (1/2DSFS006/07/08/09) do not meet the design bas i s requi rements f or their as i nstall ed conf igurations for Hi gh Energy Line Break (HELB) loadi ng.
This condi t i on has been identifi ed in I R' s 653093 and 620080.
Fur ther eval uation as documented i n EC 366723 (Attachment - A) i ndicates that a HELB pressure of 17. 7 ps i on the s ubject covers and supporting e l ements woul d be acceptabl e for the system Operability Evaluati on.
This condi t i on i s applicable to a l l o f t he covers f or t he Aux. Feed t unnel s as incl uded i n the AEL o f t his EC.
Revis i on 1 shows CA ' s #1 and 2 as COMPLETE and adds CA ' s #3 through 10.
The new CA ' s will track compl eti on of EC ' s f or each MSI V Rooms flood seal s and completion of the WO ' s to modi fy t hem per the EC' s.
There are no changes to the oper ability determi nation or engi neeri ng support.
Revis i on 2 shows CA ' s #3 and 4 as COMPLETE and revi ses the due dates f or CA ' s #7 and 8 for i nstal lati on o f U-1 t o 06/06/08.
Install ati on o f U-1 was p l anned f or the f i r st week o f May, 2008, but was not perf ormed due to concerns that the work could not be compl eted wi thi n the allowed LCOAR time and may have to be moved into outage B1R16.
I R 764527 was wri t ten documenting these concerns, and ATI 764527- 02 t o Des i gn Engi neeri ng i s tracking resolution, due 05/30/ 08.
Therefore, i t i s expected that CA ' s #7 and 8 may requ i re extension agai n once these concerns have been worked out and new installation dates can be determined.
Revis i on 3 addresses the impact of an i ssue (I R 789344, Ref 2. 5. 3. 13) associ ated with t he di scovery t hat p l ates i nstal l ed next t o the MSIV room venti l ation fan discharge damper s, that were assumed to be blow-out plates by the pressuri zati on cal culation, were i n f act blank-off
- plates, not b l ow-out panels.
The vent area assumed in Reference 2. 5. 3. 10 was 51. 3 f t2 per MSI V room.
Further revi ew by Engineeri ng resul ted i n I R 790 428 (Ref 2. 5. 3. 18) t hat documents the potential for i nsuffi cient mar g i n wi th respect to AF FSO structural integrity.
Revis i on 3 a l so addresses u s i ng
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facili ty Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
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2 dynami c loading fac t or s (DLFs) on the FSO supporting struc ture concrete expansi on anchors. (Reference 2. 5. 3. 24)
Revis i on 4 shows CA # 11 as Compl ete.
New FSO covers will be i nstalled per the CA ' s currently ass i gned, using a bounding pressure assumption.
CA # 11 created several i nteri m ACI Ts to compl ete a new mass and energy release anal ys i s and a steam tunnel p ressurizat i on anal ys i s.
I t a l so c reated a new CA #12 to verif y that the new FSO cover des i gn has rest ored t he required fac t ors o f safety pri or t o c l os i ng thi s Op Eval.
Revis i on 5 extends t he due dates o f CA ' s #7, 8, 9, and 10 to 03/31/09 and CA #12 to 04/10/09.
I t also adds a requirement t o CA #12 to determi ne i f the Blow-out panel TCCP ' s can be removed or must be made permanent.
There are no technical changes.
The most recent p l an had been t o perf orm the Uni t 2 modif i cat i ons i n B2R14, and the Unit 1 modi fications the f oll owi ng month.
However, a management deci sion was made t o not perf orm the Uni t 2 work as or i ginal l y p l anned due t o resources.
The work was SCRF ' d out of B2R1 4.
Revi s i ons requi red to the mod EC' s are not compl eted to support the work.
This i s due in part t o NRC Generi c Letter 08- 01 on gas voi ding concerns.
There is i nformation as well that the EC' s will provi de a product that will not chall enge LCO t i me to perform the work on l ine.
The fir s t oppor tuni ty to perform thi s work i s i n March 2009.
MRC approved t h i s extens i on on 9/30/08.
Revis i on 6 shows CA ' s 7, 8, 9, 10, and Comp Action #4 as Compl ete.
These acti ons installed the final AF tunnel cover s and TCCP ' s to change the b l ank-off p l ates t o b l ow-out panel s.
I t adds CA #13, whi ch wi l l t rack maki ng the Blowout panel TCCP ' s permanent modifi cations.
Complet i on of this CA wi ll all ow c l osure of thi s Op Eval.
Revis i on 7 shows CA ' s 12 and 13 as compl ete.
I t a l so removes the "Compl ete to Close EC" checkmark i n Passpor t for TCCP EC 371279.
TCCP EC 371279 installed temporary AF tunnel covers.
To i nstall some o f t he braci ng supporti ng the temporary cover i nstallati on, a sound-powered phone condui t was cut.
The temporary cover and braci ng has been phys i cal ly removed, but EC 371279 is remaini ng open because the condui t has not yet been repai red or permanentl y accepted as-is.
EC 367211 has been i niti ated and associ ated t o EC 371279 to repair the condui t or accept i t ' s current condi t i on permanentl y. Because t he conduit i s appropri ately seal ed, i t does not i mpact the abi lity of t he AF Tunnel Covers t o perf orm their function, and thus EC 371279 is not required to be compl eted in or der to close this Op Eval.
2. 0 EVALUATION :
2. 1 Describe the safety function(s) or safety support function(s) of the SSC.
As a mi nimum the f ollowi ng should be addressed, as applicabl e, i n describi ng the SSC safety or safety support f uncti on(s) :
Does the SSC recei ve/ i nitiate an RPS or ESF actuati on s i gnal ?
No, the cover ' s function i s to protect the Aux. Feed Tunnel from floodi ng and protect the equi pment from adverse loadi ng.
I t i s a pass i ve component.
I s the SSC i n the mai n flow path o f an ECCS or support system?
No, the covers are l ocated in MSIV r ooms.
I s the SSC used t o :
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Maintai n reactor cool ant pressure boundary i ntegri ty?
No.
Shutdown the reactor?
No Maintai n the reactor i n a saf e shutdown condi tion?
No.
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3 i n Prevent or miti gate the consequences of an accident that coul d resul t off site exposures comparable to 10 CFR 50. 34 (a) (1), 10 CFR 50. 67 (b) (2),
or 1 0 CFR 100. 11 gui del ines, as appli cable.
Yes.
The cover protects the valves (1/2AF013A-H) l ocated insi de the tunnel f r om any harsh envi ronment.
Does the SSC provi de required support (i. e., cooling, l ubri cation, etc. ) to a TS required SSC?
No.
I s the SSC used t o provide i solati on between saf ety t rains, or between saf ety and non-saf ety t i es?
No.
I s the SSC requi red t o be operated manuall y to mi t i gate a desi gn bas i s event?
No.
Have a l l saf ety f uncti ons descri bed in TS been i ncl uded?
Yes Have a l l saf ety f uncti ons of the SSC requi red duri ng normal operat i on and potential accident condi tions been i ncl uded?
Yes I s the SSC used t o assess conditi ons f or Emergency Acti on Levels (EALs)?
No.
2. 2 Descri be t he f ollowi ng, as applicabl e :
(a) the effect o f t he degraded or nonconf ormi ng condi tion on the SSC safety function(s) ;
The concern is t hat the covers and supporti ng e l ements do not meet the des i gn basi s for HELB l oadi ng.
However, it does meet the operability requi rement for the HELB l oading, whi ch is determined to be an acceptabl e l oadi ng, whi ch i s documented in EC 366723 (Attachment-A)
The i nappropriate assumpti on (addressed by Rev 3 o f this Op Eval ) that the blank off p l ates relieve pressure woul d result i n h i gher MS I V r oom pressure potenti ally making the AF FSO i noperabl e.
(b) any requi rement s or commi tment s established for the SSC and any challenges to these ;
The covers are designed to stay i n p l ace for des i gn l oading and p r otect the tunnel f rom f loodi ng or any other harsh envi r onment.
Based on desi gn calcul ations, the support members for the cover do not meet the design bas i s requi rements f or HELB loadi ng, however, the operabili ty c r i teri a f or the f a i ling component of the cover support i s met, whi ch are the concrete expansi on anchors that mounts the cover plate support members on t he concrete wal l.
This evaluation showi ng operability acceptance i s contained i n EC 366723 (Attachment-A).
(c) the circumstances o f the degraded/nonconf orming condi tion, i ncl udi ng the possibl e failure mechani sm(s) ;
The possibl e failure mechani sms i s overl oad of the p l ate or suppor ting elements.
This woul d allow a s team water mi xture to flow t o the area containing the AF013s.
Al t hough the val ves are of the same type and have similar mai ntenance as envi ronmentall y qualified valves, the AF013s are not environmental ly qualified.
Theref ore t he harsh envi ronment could cause the valves to f a i l.
(d) whether t he potent i a l failure i s time dependent and whether the condi t i on wi ll conti nue to degrade and/or wi ll the potential consequences
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facili ty Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
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4 i ncrease ;
The potential fai lure i s not time dependent.
The condi tion will not cont i nue t o degrade and the potential consequences will not i ncrease.
(e) the aggregate effect of the degraded or nonconf orming condi tion i n l ight of other open OpEval s :
There are current l y n i ne other open Op Eval s that i mpact Byron Uni t 1 and 2.
However, none of these are associated wi t h the Aux. Feed Tunnel cover, and t here is no adverse aggregate effect o f these ni ne open Op Eval s on t h i s issue, or v i ce-versa.
2. 3 I s SSC operability supported?
Explai n bas i s YES (e. g., analysis, test, operati ng experi ence, engi neering j udgment, etc. ) :
EC 366723 (Attachment-A) contains the evaluati on t hat shows the cover support members woul d meet the operability criteria f or revi sions of t h i s Op Eval through Rev 3.
To esti mate the i mpact of t he reducti on in vent area i n Rev 3 o f t he Op Eval, Sargent and Lundy (S&L) was contacted to perf orm study runs on each unit.
These study r uns had the f ollowi ng attri butes :
The sof tware program used (RELAP) i s accepted by the i ndustry for this type o f anal ys i s and i s the same software used i n Reference 2. 5. 3. 10,
S&L has an approved QA program and the sof tware was run from a contro l led l ocation, The runs were performed by a qualified anal yst wi th oversight from a seni or engi neer, Inputs were devel oped with i nput f rom Byron, Brai dwood and Corporate Engi neering.
The f o l lowi ng are the signi ficant changes t o the model used i n Ref erence 2. 5. 3. 10 :
Credi t was taken f or more realisti c mass and energy rel ease, (Ref 2. 5. 3. 21)
The vent paths f r om the MSI V room to t he Mai n Steam Tunnel were more accurately model ed (pressure penalty),
Credi t was taken f or t he openings created under References 2. 5. 3. 14 and 2. 5. 3. 15.
Credi t was taken f or t he annular flow area between the MSIV f an motor and f an shroud.
Note that no credit was taken f or the fan runni ng.
Security bars were modeled as parti al f low obstr uction.
Credi t was taken f or f l ow path of normally open dampers on f an discharge (after adjusting for the obstruction due t o thickness of the damper blades).
The model was run in an iterative manner where Byron and Br a i dwood Engi neering discussed the effects o f the changes f or i mpact and reasonableness wi th S&L.
Based on t he S&L study runs, the peak pressure i n the MSIV room a f ter accounting f or t he above model changes was 21. 7 psi g f or Uni t 1 and 19. 4 psig f or Uni t 2.
(Ref erence 2. 5. 3. 19)
Since the pressures have changed, new dynami c load factors were determi ned by S&L and p r ovided in Reference
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
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5 2. 5. 3. 22.
Note that work i s in progress t o instal l sti ffeners on the AF FSO p l ates and that the DLFs onl y represent the AF FSO plates pri or t o the i nstallati on of t he s tiffeners.
On Uni t 1, two Temporary Configuration Changes (TCC) were i nstalled t o enhance a degraded but operable condi t i on ; removal o f the b l ank o f f p l ates (Ref 2. 5. 3. 15) and s trengthening of the AF FSO covers (Ref 2. 5. 3. 1 6).
The design of the s t iffener TCC on Uni t 1 used a peak pressure o f 20 psi g and DLF o f 2. 0 (Reference 2. 5. 3. 20).
As the TCC was bei ng i nstalled, Sargent and Lundy provi ded additi onal i nformati on that the peak p ressure was 21. 7 psi g, i nstead of t he 20 psig used f or the desi gn of the TCC.
(Thi s occurred due t o the parall e l paths o f refi ni ng t he anal ys i s and i nstalling the TCC. )
The calcul ation (Reference 2. 5. 3. 20) used t o devel op the f actors of safety f or t he TCC was reviewed; adequate margin exi s t s to compensate f or t he i ncreased pressure and still assure operabili ty o f the AF FSO Concrete Expansi on Anchors with a factor of saf ety greater than 2. 0. A fini te e l ement anal ysis of the p l ate itsel f shows that the plate woul d remai n intact (Reference 2. 5. 3. 17). Theref ore the Uni t 1 AF013s shoul d be considered operabl e wi th the enhanced margi n gained by t he two TCCs.
For Uni t 2 the b l owout panel TCC has been i nstalled, but Uni t 2 i s diff erent than Unit 1 i n two other aspects ; the tube steel stiff eners have not yet been install ed and the peak pressure in t he MSIV rooms are lower.
The pressures are lower due to different mass and energy rel eases resul t i ng f rom di fferences i n SG des i gn.
These offsett i ng factor s have been reviewed in Ref erence 2. 5. 3. 17 and the factor o f safety for t he CEAs i s 1. 35.
This i s suf fic i ently (but subj ectivel y) greater than 1 that operability is assured on Unit 2 by onl y c rediti ng the blowout panel TCC.
The sti ffener TCC is being i nstalled to increase margi n.
I f 2. 3 = NO, notify Operations Shift Management i nunediately.
I f 2. 3 = YES, c l early document the bas i s for the determi nati on.
2. 4 Are compensatory and/or correcti ve acti ons requi red?
YES Correcti ve action i s i n place to i nstal l modi fications that would ensure fu l l des i gn basi s compliance.
Compensat ory measures are requi red to ensure that f actors of safety remai n within acceptable limit s.
I f 2. 4 = YES, compl ete secti on 3. 0 (if NO, N/A secti on 3. 0).
2. 5 Ref erence Documents :
2. 5. 1 Technical Specifi cations and Bases Sect i on(s) :
2. 5. 1. 1 3. 7. 5 Aux. Feedwater System 2. 5. 2 UFSAR Secti on(s) :
2. 5. 2. 1 3. 6, Attachment C3. 6, Main Steaml ine Break i n Mai n Steam Tunnel 2. 5. 2. 2 3. 6 Protection Against Dynami c Effects Associ ated with the Post ul ated Break of Pi ping 2. 5. 2. 3 3. 11 Envi r onmental Desi gn o f Mechani cal and Electrical Equi pment 2. 5. 2. 4 15. 1. 5 Steam System Piping Break at Zero Power 2. 5. 2. 5 15. 1. 6 Steam System Piping Break at Full Power 2. 5. 3 Other :
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Drwg S-895, Rev AA.
Drwg S-896, Rev. u Drwg S-969 Rev. AA Drwg S-970, Rev AB Drwg S-1093, Rev. Q Drwg S-1062, Rev. x Drwg S-1502, Rev. G Drwg S-1088, Rev. H Cale. 5. 6. 3, Rev. 005 Cale. 3C8- 0282- 001, Rev. 003 IR 653093 IR 620080 IR 789344 Page :
6 2. 5. 3. 1 2. 5. 3. 2 2. 5. 3. 3 2. 5. 3. 4 2. 5. 3. 5 2. 5. 3. 6 2. 5. 3. 7 2. 5. 3. 8 2. 5. 3. 9 2. 5. 3. 10 2. 5. 3. 11 2. 5. 3. 12 2. 5. 3. 13 2. 5. 3. 14 EC 371272 Temporary Modifi cation Of Damper Blankoff Pl ate I n Safety Val ve Room Roof, Uni t 2, Rev 0 2. 5. 3. 15 EC 371267 Temporary Modifi cations Of Bl ankof f Pl ate I n Saf ety Valve Room, Uni t 1, Rev 0 2. 5. 3. 16 EC 371278, Auxi l iary Feedwater Tunnel Flood Seal Covers Braci ng (Uni t 1) For High Energy Line Break (HELB) Loading (TCCP), Rev 3 2. 5. 3. 17 EC 366723, Eval uation Of Auxili ary Feedwater Tunnel Fl ood Barri er For HELB Loads - Operability Review, Rev 2 2. 5. 3. 18 IR 790428 2. 5. 3. 19 S&L DIT S040 - BYR/BRW-8013, Anal ysis of Li ne Break in Lower Safety Val ve Room, 7/1/08 2. 5. 3. 20 Calculati on 5. 6. 3. 9-BYR08- 068, Rev 1 2. 5. 3. 21 IR 792213 2. 5. 3. 22 S&L DIT S040 - BYR/BRW-8012, Aux Feedwater Tunnel Operabi l i ty f or Byron and Braidwood, 7/1/08 2. 5. 3. 23 EC 371279, Auxi l iary Feedwater Tunnel Fl ood Seal Covers Braci ng (Uni t 2), Rev 1.
2. 5. 3. 24 IR 783811 3. 0 ACTI ON ITEM LI ST :
If, through eval uating SSC operability, it i s determined that the degraded or nonconformi ng SSC does not prevent accomplishment o f the specified safety functi on(s) in the TS and the i ntenti on is to continue operati ng the p l ant i n that condi tion, then record bel ow, as appropri ate, any required compensatory actions to support operability and/or correcti ve acti ons required to restore ful l qualificati on.
For correcti ve actions, document when the acti ons should be completed (e. g., i rrunedi ate, wi thi n next 13 week peri od, next outage, etc. ) and the basis f or t i meli ness of the action.
Correcti ve acti on t i meframes l onger than the next ref ueling outage are to be explicitl y j ustified as part o f the OpEval or defic i ency tracki ng documentati on bei ng used to perform the corrective acti on.
Correcti ve Action #1 :
Determi ne scope and extent o f change (modificati on), Get i nstallation esti mate. Feed thi s i nf o to WC f or thei r ATI.
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Responsi ble Dept. /Supv.:
Action Due :
DEM~
Compl ete Page :
7 Basis f or t i meli ness o f acti on :
degradation concern wi th thi s issue.
of t i me.
There i s no t i me-dependent The due date is a reasonabl e amount Action Trac ki ng # :
653093- 03 Correcti ve Action #2 :
Determi ne install ati on completi on date and generate appropri ate corrective Responsi ble Dept. /Supv.:
Action Due :
actions.
Work Contr o l.tlllllllllllll Compl ete Basis f or t i meli ness o f acti on :
degradation concern wi th thi s issue.
of t i me.
There i s no t i me-dependent The due date is a reasonabl e amount Action Tracki ng # :
653093 - 04 Correcti ve Action #3 :
des i gn.
Complete EC 367209 for AF t unnel Responsi ble Dept. /Supv.:
Action Due :
DEM~
Complete Basis f or t i meli ness o f acti on :
Some t i me i s required to des i gn a change to the tunnel covers. There is no t i me-dependent degradati on concern wi th thi s issue.
Action Tracki ng # :
Correcti ve Action #4 :
des i gn.
Responsi ble Dept. /Supv.:
Action Due :
653093- 05 Complete EC 367210 for AF t unnel DEM~
Complete Basis f or t i meli ness o f acti on :
change to the tunnel covers.
Some t i me i s required to des i gn a There i s no time-dependent degradati on concern wi t h thi s issue.
Action Tracki ng # :
653093- 06 Correcti ve Action #5 :
des i gn.
Complete EC 36721 1 for AF t unnel Responsi ble Dept. /Supv.:
Action Due :
DEM~
Complete Basis f or t i meli ness o f acti on :
change to the tunnel covers.
Some t i me i s required to des i gn a There i s no time-dependent degradati on concern wi t h thi s issue.
Action Tracki ng # :
653093- 07
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Page :
8 Correcti ve Action #6 :
des i gn.
Complete EC 367212 for AF tunnel Responsi ble Dept. /Supv.:
Action Due :
DEM~
Complete Basis f or t i meli ness o f acti on :
change to the tunnel covers.
Some t i me i s required to des i gn a There i s no time-dependent degradati on concern wi t h thi s issue.
Action Trac ki ng # :
653093- 08 Correcti ve Action #7 :
1061688.
Responsi ble Dept. /Supv.:
Action Due :
Modify U-1 AF Tunnel covers per WO WC~
Complete Basis f or t i meli ness o f acti on :
change to the tunnel covers.
Some t i me i s required to des i gn a There i s no time-dependent degradati on concern wi t h thi s issue.
Action Tracki ng # :
653093- 09 Correcti ve Action #8 :
1061690.
Responsi ble Dept. /Supv.:
Action Due :
Modify U-1 AF Tunnel covers per WO WC~
Complete Basis f or t i meli ness o f acti on :
change to the tunnel covers.
Some t i me i s required to des i gn a There i s no time-dependent degradati on concern wi t h thi s issue.
Action Tracki ng # :
653093-10 Correcti ve Action #9 :
1061693.
Responsi ble Dept. /Supv.:
Action Due :
Modify U-2 AF Tunnel covers per WO WC~
Complete Basis f or t i meli ness o f acti on :
change to the tunnel covers.
Some t i me i s required to des i gn a There i s no time-dependent degradati on concern wi t h thi s issue.
Action Tracki ng # :
653093-1 1 Correcti ve Action #10 :
1061694.
Responsi ble Dept. /Supv.:
Action Due :
Modi fy U-2 AF Tunnel covers per WO WC~
Complete Basis f or t i meli ness o f acti on :
change to the tunnel covers.
Some t i me i s required to des i gn a There i s no time-dependent degradati on concern wi t h thi s issue.
Action Tracki ng # :
653093-12
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facili ty Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Page :
9 Correcti ve Action #11 :
Determi ne course o f acti on to align the phys i cal p l ant and the licensing bas i s.
(analys i s, physical changes, UFSAR/ l icensing changes etc).
Create additi onal acti ons as requi red.
Responsi ble Dept. /Supv.:
Eng~
Action Due:
COMPLETE Basis f or t i meli ness o f acti on :
The knowl edge regar d i ng AF FSOs i s evol v i ng.
Time i s needed t o determine the best sol uti on. There i s no time-dependent degradation concern wi th thi s issue.
Action Tracki ng # :
653093-13 Corrective Action #12 :
After i nstallation o f t he fi nal tunnel cover des i gn as documented i n CAs 653093- 09, 10, 11, 12, verify t hat the factor of safety f or a l l component s has been restored t o the design val ues, t here are no hol ds I unver ifi ed assumpti ons associ ated wi th the design, and the Op Eval acti ons have been completed. If any of these actions are not compl ete, create a new corrective acti on to track compl etion.
Determi ne i f the Blow-out panel TCCP ' s may be removed or must be made permanent.
I f they must be made permanent, create new cor rect i ve acti ons to t rack compl etion.
Responsi ble Dept. /Supv.:
Action Due:
Eng~
04/10/09Compl ete Basis f or t i meli ness o f acti on :
Thi s date i s t he several weeks after the final CA dates f or installati on of the FSO covers to a llow time to perf orm i t fol lowi ng installati on o f the new covers.
Action Tracki ng # :
653093-17 Corrective Action #13 :
Ensure TCCPs 371267 & 371272 (Ul & U2 val ve rooms ' blow-out panel s) are converted i nto permanent modifi cations.
Responsi ble Dept. /Supv.:
Eng~
Action Due:
06/30/09Compl ete Basis f or t i meli ness o f acti on :
All phys i cal p l ant changes to resol ve thi s issue have been compl eted.
The b l owout panels are a l ready i nstalled under TCCP ' s.
Thi s acti on i s admi nistrative to make them permanent.
Action Tracki ng # :
653093-18 Compensatory Measure #1 :
Install TCC f or Uni t 1 Bl ank Off Panel s (EC 371267).
Responsi ble Dept. /Supv.:
Action Due:
WC~
Complete Basis f or t i meli ness o f acti on :
enhance margin t o operability.
Complete.
Action Tracki ng # :
N/A Performed on expedi ted basi s t o
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Page :
10 Compensatory Measure #2 :
I nstall TCC f or Uni t 2 Bl ank Of f Panel s (EC 371272).
Responsi ble Dept. /Supv.:
WC~
Action Due:
margi n to operabi lity.
Performed on expedi ted basis to enhance Compl ete Basis f or t i meli ness o f acti on :
Complete Action Trac king # :
N/A Compensatory Measure #3 :
I nstall TCC f or Uni t 1 AF FSO Braci ng Responsi ble Dept. /Supv.:
Action Due:
WC~
Complete Basis f or t i meli ness o f acti on :
enhance margin t o operability.
Performed on expedi ted basi s t o Action Tracki ng # :
N/A Compensatory Measure #4 :
I nstall TCC f or Uni t 2 AF FSO Braci ng Responsi ble Dept. /Supv.:
Action Due:
WC~
Complete Basis f or t i meli ness o f acti on :
Performi ng on expedi ted basis to enhance margin t o operability.
Action Tracki ng # :
653093-14 (In progress) 4. 0 SIGNATURES :
4. 1 Preparer(s)
See Milestone I
See Milestone 110 Date I
Date 4. 2 Reviewer Ssee Milestone I
See Milestones Date (10 CFR 50. 59 screener qualified or active SRO license hol der) 3rd Party Date Revi ew N/A I
See Mi lestones 4. 3 Sr. Manager Des i gn Engg/Desi gnee Concurrence See Milestones Date 4. 4 Operations Shif t Management Approval See Mil estones Date 4. 5 Ensure the compl eted f orm i s forwarded to t he OEPM for processing and Action Tracking entry as appropri ate.
5. 0 OPERABILI TY EVALUATION CLOSURE :
5. 1 Corrective acti ons are complete, as necessary, and t he OpEval i s ready f or c l osure I
See Milestones Date (OEPM)
Engi neeri ng Change Print Date :
08/31/2017 EC Number Facility Type/Sub-type :
0000366685 007 BYR OPEV Exelon.
Date 5. 3 5. 2 Page :
11 Operations Shif t Management Approval
/See Mil estones Ensure the compl eted form i s f orwarded to the OEPM f or process i ng, Acti on Tracking entry, and cancellati on of any open compensatory acti ons, as appropri ate.