ML17206A612: Difference between revisions

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See also: [[followed by::IR 05000389/1978010]]


=Text=
=Text=
{{#Wiki_filter:P.O.IIOX 013100, MIAMI.FL 33101FLORIDA POIlVER a LIGHT CO'".PA/.~December 19, 1978 L-78-391 Mr.C.E.Murphy, Chief Reactor Construction
{{#Wiki_filter:P.O.IIOX 013100, MIAMI.FL 33101FLORIDA POIlVER a LIGHT CO'".PA/.~December 19, 1978 L-78-391 Mr.C.E.Murphy, Chief Reactor Construction and Engineering Support Sranch U.S.Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303  
and Engineering
 
Support Sranch U.S.Nuclear Regulatory
==Dear Mr.Murphy:==
Commission
Re: RII:RWW 50-389/78-10 Florida Power&Light Company has reviewed the subject inspection report and its response is contained in Attachment A.There is no proprietary information con-tained in the report.Very truly yours,~gj g.>>c Robert E.Uhrig Vice President REU:LLL:cf Attachment cc: Mr.James P.O'Reilly Office of Inspection and Enforcement Harold F.Reis, Esquire 1 I ATTACHMENT A RESPONSE TO RII:RWW, 50-389/78-10 Findin 1: 2 Inch Tar et Rock Safet In ection Valve Deficienc The RII inspector noted that both CE and the RII had informed FPL of an excessive pressure drop with the subject valves, and that FPL appeared to incorrectly evaluate the incident as non-reportable, contrary to CE's conclusion that it indeed was reportable under 10 CFR 50.55(e).~Res onse: Me wish to note that 10 CFR 50.55(e)clearly states that the holder of the construction permit is responsible for the determination of whether a construction incident is reportable, and not the NSSS vendor.FPL has used the assistance of a number of parties, including CE, in its determin-ation of the reportability of this item, but by no means does the opinion of an outside organization bind us to its conclusion.
101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Dear Mr.Murphy: Re: RII:RWW 50-389/78-10
It appears that the major difference between RII and FPL, regarding the reportability of this item, lies in the interpretation of the phrase in 10 500 50.55(5(11(,"~iifl 5 fl 1 1 fl 1 d fg." (5 dl added.)FPL's review of this problem concluded that the issue was a valid safety-related defect, but not a significant one;therefore, no reporting was required.This judgement is based on the fact that (1)the valves were not to be installed for sometime, (2)the problem was identified through normal gA channels (via CE), and (3)the repair was minor and easily performed without extensive evaluation or redesign.Based upon the above, FPL must take exception to the findings noted by the inspector.
Florida Power&Light Company has reviewed the subject inspection
It is FPL's opinion that problems such as the above, identified and resolved through routine channels, are normal repair items typically encountered on a construction site.Due to the fact that safety-related equipment was involved, FPL invoked the evaluation procedures and maintained records of the resolution to ensure proper handling of the issue and compliance with the appropriate gA procedures.
report and its response is contained in Attachment
f>(''f~pj>
A.There is no proprietary
TTACHt<ENT A-RESPONSE TO RII:RWW, 50-389/78-10 Page 2 Findin 2: In ersol 1-Rand I-R Low Pressure Safet LPSI and Containment S ra Pum CSP Oeficienc The RII inspector noted that FPL knew of a problem with an impeller locking nut assembly working loose at one of its other plants (Turkey Point)in November 1975 and was informed by RII on August 23, 1978 of the potential deficiency as well.-The inspector further states that despite"knowledge of this potential significant deficiency in final design" FPL failed to report the matter to the NRC in accord-ance with 10 CFR 50.55(e).~ll 2: This issue arose from FPL's concern over a maintenance item.The Turkey Point problem was resolved by tack-welding the nut tight, and in 1975 FPL requested assurance from I-R that this or some other satisfactory method of securing the locknuts for pumps to be supplied for St.Lucie Unit 2 would be provided.At this time the pumps were not yet'manufac-tured.Me are attaching copies of our correspondence on this matter, which were not available to the inspector, which we believe will further clarify the issue.Our opinion on the significance of this item is the same as that for the finding above.This is a minor item, picked up by FPL's normal gA and preventative maintenance program and is non-reportable.
information
Further, a deficiency either in final design or construction, has not been identified with the pumps supplied for Unit 2.Based upon the above, FPL must take exception to the finding noted by the inspector.
con-tained in the report.Very truly yours,~gj g.>>c Robert E.Uhrig Vice President REU:LLL:cf
FPL believes that utilities which use the experiences of other units to uncover and correct problems before they develop, as happened in these instances, should be corenended, and not found to be in blanket non-compliance with NRC reporting'procedures.
Attachment
Should RII disagree with our interpretation of"significant", we suggest that further discussion to clarify the issue may be appropriate.  
cc: Mr.James P.O'Reilly Office of Inspection
~.l I f~r.~.c u+Vta>m, NIMBI, SLORIDA 3llOI~lFLORIDA POWER 5 LIGHT CO:.IPAiV November 21, 1975 EBASCO SERVICES, INC.Two Rector Street New York, New York 10006 Attention:
and Enforcement
/.COMBUSTION ENGINEERING P 0.Box 500 Qindsor, CT 06095 Mr.L.Tsar.ris, Project Manager Attention:
Harold F.Reis, Esquire  
Mr.A.S.Janeson, Project Manager (ST-IVCIE PLANT UNIT 81-1974-890 Kf INSTALI KTION UNIT 82-1979-890 Kl EKTENSION ST.I.VCIE UNIT f/2 PSL 2 LPSI AND CONTAIN-hT SPP4Y PlM'S PILES: CE-950-0775 AND NY-422527 FL0-566, FF-860 Gentlemen:
1 I  
P.L's Turkey Point nuclear units we use pumps for Residual Heat Removal ervice which are of the same brand (I-R)and similar in design to PSL 2 JZSI"nd contain-ent spray pcs.During disassembly'of the Turkey?oint pumps for seal maintenance it vas ooserved on more than one occassion that tne impeller locking"..-arse-bly had worked loose.F?L tack-welded the loc::nut assemblies to preclude the possibility of loosening.
ATTACHMENT
Indica"fons from the local I-R representative are that the impeller locknut assemo'es to be usec a:?SL 2 are the same as those furnished at Turkey Point.Please obtain assurance from I-R that they vill provide loc'Inputs secured=y tack-welding or some other satisfactory method.Also since there was considerab~e difficulg experienced vith gasket leakage at Turkey?Oi=t please obtain from I-R assurance that we vill not have this problem a" S=.Lucie 2.Yours very truly, RLS/m=b'ee Attachment
A RESPONSE TO RII:RWW, 50-389/78-10
~v C.S.Kent Project Manager 6 X O~-r,b ,h;~'3 q4 ib Ig M.'.Jameson 0 N er 21, 1975 RE: FLO-566, PF-860 ccrc Hra Mr.Mr.Mr.Hr.Mr.Mr.Mr.Mr.Hr.Mr.Mr.Mr.Hr.Mr.Dr.Mr.Mr.Mr.C.B.Amos Lou Borchardt G.E.Crowell R.A.DeLorenzo J.D.Distel J.H.Risher 0.R.Gray K.N.Harris R.W.Kammann J.L.Legier G.N.Lemmon J.E.Ramondo W.H.Rogers, Jr.A.D.Schmdit D.J.Stephens R.E.Uhrig J.E.Vessely C.E.Waddell L.J.Weber N.T.Weems  
Findin 1: 2 Inch Tar et Rock Safet In ection Valve Deficienc The RII inspector noted that both CE and the RII had informed FPL of an excessive pressure drop with the subject valves, and that FPL appeared to incorrectly
'i-E Power Systcins ,, Combusr<on r ngulcrrinrr, Inc.00 Prosper.'rirl Road sor.Ccnnccncut 06095 Tel 203/063 lgl l Telex~J iJ2J7~pOVlf:-R~SYSTEMS April 6, 1976 L-CE-1328 St.Lucie Plant Unit No.2-1978-890 i'xtension Mr.C.S.Kent Enr ineering Project Manag r Florida Power&Light Co.P.O.Box 3100 Miami, Florida 33101  
evaluate the incident as non-reportable, contrary to CE's conclusion
 
that it indeed was reportable
==SUBJECT:==
under 10 CFR 50.55(e).~Res onse: Me wish to note that 10 CFR 50.55(e)clearly states that the holder of the construction
LPSI PFG'S  
permit is responsible
 
for the determination
==Dear Mr.Kent:==
of whether a construction
FP&L letter FF-860 of i".ovenber 21, 1975 advised C-E that you had experienced on the Turkey Point plant loosening of the impeller locknut assembly on t.ho In crsoll-Rand residual heat rcr oval pumps and Basket leakage, and requested ance from the a nufacturer that these same problems would not occur with nit 2 LPSI and containment spray pu=ps.Ve have taken uu this r.".atter with Ingersoll-Pand, the supplier of the LPSI~, pumps i;l the C-E sco"=, and t.ley)lave respond d to the concern about the lnce-nut.assembl" (but not the gasket lea'kage problem);two (2)cop'es of the In"ersoll-Rand letter of"..arch 23, 1976 are attached for your in.ormation.
incident is reportable, and not the NSSS vendor.FPL has used the assistance
of a number of parties, including CE, in its determin-ation of the reportability
of this item, but by no means does the opinion of an outside organization
bind us to its conclusion.
It appears that the major difference
between RII and FPL, regarding the reportability
of this item, lies in the interpretation
of the phrase in 10 500 50.55(5(11(,"~iifl 5 fl 1 1 fl 1 d fg." (5 dl added.)FPL's review of this problem concluded that the issue was a valid safety-related
defect, but not a significant
one;therefore, no reporting was required.This judgement is based on the fact that (1)the valves were not to be installed for sometime, (2)the problem was identified
through normal gA channels (via CE), and (3)the repair was minor and easily performed without extensive evaluation
or redesign.Based upon the above, FPL must take exception to the findings noted by the inspector.
It is FPL's opinion that problems such as the above, identified
and resolved through routine channels, are normal repair items typically encountered
on a construction
site.Due to the fact that safety-related
equipment was involved, FPL invoked the evaluation
procedures
and maintained
records of the resolution
to ensure proper handling of the issue and compliance
with the appropriate
gA procedures.  
f>(''f~pj>  
TTACHt<ENT
A-RESPONSE TO RII:RWW, 50-389/78-10
Page 2 Findin 2: In ersol 1-Rand I-R Low Pressure Safet LPSI and Containment
S ra Pum CSP Oeficienc The RII inspector noted that FPL knew of a problem with an impeller locking nut assembly working loose at one of its other plants (Turkey Point)in November 1975 and was informed by RII on August 23, 1978 of the potential deficiency
as well.-The inspector further states that despite"knowledge
of this potential significant
deficiency
in final design" FPL failed to report the matter to the NRC in accord-ance with 10 CFR 50.55(e).~ll 2: This issue arose from FPL's concern over a maintenance
item.The Turkey Point problem was resolved by tack-welding
the nut tight, and in 1975 FPL requested assurance from I-R that this or some other satisfactory
method of securing the locknuts for pumps to be supplied for St.Lucie Unit 2 would be provided.At this time the pumps were not yet'manufac-
tured.Me are attaching copies of our correspondence
on this matter, which were not available to the inspector, which we believe will further clarify the issue.Our opinion on the significance
of this item is the same as that for the finding above.This is a minor item, picked up by FPL's normal gA and preventative
maintenance
program and is non-reportable.
Further, a deficiency
either in final design or construction, has not been identified
with the pumps supplied for Unit 2.Based upon the above, FPL must take exception to the finding noted by the inspector.
FPL believes that utilities which use the experiences
of other units to uncover and correct problems before they develop, as happened in these instances, should be corenended, and not found to be in blanket non-compliance
with NRC reporting'procedures.
Should RII disagree with our interpretation
of"significant", we suggest that further discussion
to clarify the issue may be appropriate.  
~.l  
I f~r.~.c u+Vta>m, NIMBI, SLORIDA 3llOI~lFLORIDA POWER 5 LIGHT CO:.IPAiV November 21, 1975 EBASCO SERVICES, INC.Two Rector Street New York, New York 10006 Attention:
/.COMBUSTION
ENGINEERING
P 0.Box 500 Qindsor, CT 06095 Mr.L.Tsar.ris, Project Manager Attention:
Mr.A.S.Janeson, Project Manager (ST-IVCIE PLANT UNIT 81-1974-890 Kf INSTALI KTION UNIT 82-1979-890 Kl EKTENSION ST.I.VCIE UNIT f/2 PSL 2 LPSI AND CONTAIN-hT SPP4Y PlM'S PILES: CE-950-0775
AND NY-422527 FL0-566, FF-860 Gentlemen:
P.L's Turkey Point nuclear units we use pumps for Residual Heat Removal ervice which are of the same brand (I-R)and similar in design to PSL 2 JZSI"nd contain-ent
spray pcs.During disassembly'of
the Turkey?oint pumps for seal maintenance
it vas ooserved on more than one occassion that tne impeller locking"..-arse-bly had worked loose.F?L tack-welded
the loc::nut assemblies
to preclude the possibility
of loosening.
Indica"fons
from the local I-R representative
are that the impeller locknut assemo'es to be usec a:?SL 2 are the same as those furnished at Turkey Point.Please obtain assurance from I-R that they vill provide loc'Inputs
secured=y tack-welding
or some other satisfactory
method.Also since there was considerab~e
difficulg experienced
vith gasket leakage at Turkey?Oi=t
please obtain from I-R assurance that we vill not have this problem a" S=.Lucie 2.Yours very truly, RLS/m=b'ee Attachment
~v C.S.Kent Project Manager 6 X O~-r,b ,h;~'3 q4 ib Ig  
M.'.Jameson 0 N er 21, 1975 RE: FLO-566, PF-860 ccrc Hra Mr.Mr.Mr.Hr.Mr.Mr.Mr.Mr.Hr.Mr.Mr.Mr.Hr.Mr.Dr.Mr.Mr.Mr.C.B.Amos Lou Borchardt G.E.Crowell R.A.DeLorenzo J.D.Distel J.H.Risher 0.R.Gray K.N.Harris R.W.Kammann J.L.Legier G.N.Lemmon J.E.Ramondo W.H.Rogers, Jr.A.D.Schmdit D.J.Stephens R.E.Uhrig J.E.Vessely C.E.Waddell L.J.Weber N.T.Weems  
'i-E Power Systcins ,, Combusr<on
r ngulcrrinrr, Inc.00 Prosper.'rirl
Road sor.Ccnnccncut
06095 Tel 203/063 lgl l Telex~J iJ2J7~pOVlf:-R~SYSTEMS April 6, 1976 L-CE-1328 St.Lucie Plant Unit No.2-1978-890 i'xtension
Mr.C.S.Kent Enr ineering Project Manag r Florida Power&Light Co.P.O.Box 3100 Miami, Florida 33101 SUBJECT: LPSI PFG'S Dear Mr.Kent: FP&L letter FF-860 of i".ovenber
21, 1975 advised C-E that you had experienced
on the Turkey Point plant loosening of the impeller locknut assembly on t.ho In crsoll-Rand
residual heat rcr oval pumps and Basket leakage, and requested ance from the a nufacturer
that these same problems would not occur with nit 2 LPSI and containment
spray pu=ps.Ve have taken uu this r.".atter with Ingersoll-Pand, the supplier of the LPSI~, pumps i;l the C-E sco"=, and t.ley)lave respond d to the concern about the lnce-nut.assembl" (but not the gasket lea'kage problem);two (2)cop'es of the In"ersoll-Rand
letter of"..arch 23, 1976 are attached for your in.ormation.
ie will"o back to Innersol-:=--..d to detert ine what remedy tlrey propose to elitlinate
ie will"o back to Innersol-:=--..d to detert ine what remedy tlrey propose to elitlinate
~~~ni gasket I::ak-e p ob".:.,a t you lrave i"ced on the Turkey Po int pumps an: will le'o-''".ow
~~~ni gasket I::ak-e p ob".:.,a t you lrave i"ced on the Turkey Po int pumps an: will le'o-''".ow their resp=nse to this other concern as soon as we receive it.Uery truly yours, ASJ/es Enclosur s (")CC: T.L.J.E.L.W.0~~~w/]D 7'~-.i 1 R.S.".nt osuosso R=: "..sen AD DeLorenzo Lcskovjan H.Roger , Jr.K.Harris C.Crnwell C.W.Dakin B.J.Escuc J.R.Cindi r R.W.Knmvinnn S.W."Srrablr ry C.E.Vnddel l E.H.Srrr t r DP1~.l eh)r';~~)~','.;(,'~"I s l t I.I"'rot\"rlr Ar R vl~T'I i':.r'.~g i~I'I~'.l~<I rr.i e:...r>>its J'>>:tl~r/&#x17d;z/A.S.Janeson Project Manager F>.a r.co-e;va,er.T.crir-0 F Q t,'m~aD.a OH-I-.:km:~aD CCm~~~camvZ Za ft~san'PHILLLPSGURG, N.J.08bdS Combustion Engineering, Inc.IOOO Prospect Hill Road)windsor, CT 06095 23 MR 76 Attention:
their resp=nse to this other concern as soon as we receive it.Uery truly yours, ASJ/es Enclosur s (")CC: T.L.J.E.L.W.0~~~w/]D 7'~-.i 1 R.S.".nt osuosso R=: "..sen AD DeLorenzo Lcskovjan H.Roger , Jr.K.Harris C.Crnwell C.W.Dakin B.J.Escuc J.R.Cindi r R.W.Knmvinnn S.W."Srrablr ry C.E.Vnddel l E.H.Srrr t r DP1~.l eh)r';~~)~','.;(,'~"I s l t I.I"'rot\"rlr Ar R vl~T'I i':.r'.~g i~I'I~'.l~<I rr.i e:...r>>its J'>>:tl~r/&#x17d;z/A.S.Janeson Project Manager F>.a r.co-e;va,er.T.crir-  
Mr.A.S.Jameson Project llanager  
0 F  
 
Q t,'m~aD.a OH-I-.:km:~aD
==Subject:==
CCm~~~camvZ
Florida Power C Light St.Lucie Unit P2 C.E.P.O.9500775 LPSI Pumps I-R Ref: OOI-35382  
Za ft~san'PHILLLPSGURG, N.J.08bdS Combustion
 
Engineering, Inc.IOOO Prospect Hill Road)windsor, CT 06095 23 MR 76 Attention:
==Reference:==
Mr.A.S.Jameson Project llanager Subject: Florida Power C Light St.Lucie Unit P2 C.E.P.O.9500775 LPSI Pumps I-R Ref: OOI-35382 Reference: (A)C.E.letter L-PCE-408 dated l9 DE 75.entlemen: response to Ref.(A)on shaft/impeller
(A)C.E.letter L-PCE-408 dated l9 DE 75.entlemen: response to Ref.(A)on shaft/impeller locking nuts, I-R nas in:esti-aated several occurrences in which the locking nuts lo"sened and fn nd that the causes were either improper installation afier maintenance or opera io..of the unit in wrong rotation whi!c installing mtor lea"s.To ass're that the Io"kirg nuts are properly applied, we are expand!no the inst2 I I a-: Ion/esse-."!y ins if u tions to clarify this op rati"n.In addition, we are also investigating oiher metho"s of positively lockirg the n.-s to the s!.i-: to preven loos ning, L e anticip.te thai his m.thod will De finalize in time to"e i~p Iemented on the present contract.On the units in the',.'-IC it is accep.able to tack weld the two nt ts tcge-,he a~e~i'hey are pro.-.e.-Jy instaile"'.
locking nuts, I-R nas in:esti-aated several occurrences
Proper installation should be fo torque the ja-..nut into pla"e then whi!e holding the jam nut to pre;ant rotation tc"qua the cap".t in o place.'I'fe apol"=i-=',or such a la.e response but as indicated aBove, we were un-aware n!a.-y serious problems prior to your letter.I f theP-"e any qu t ions, please fee I frcc to conta" t thi", of f i cn or our Hart for"~ranch of i i..".C/2 C/2 r'e Com)ust I on Eng i neer I ng Attn: lf.C.Stnndin R.J.Landrigas I-R llartford, C.Bricklcy (I)n n riant 0 h A~n (I)Very 1ruly your I tiGERSOLL-Rh:<D CO'Ipi'.'!
in which the locking nuts lo"sened and fn nd that the causes were either improper installation
(~~/P7: 'c~/tt.f.De.'tnrdo Camcron Iluclear Pun'ion l~4 CC>>PYEBASCO SERVlCES.Its'Ol>OL+TCO February 3, 1976 SL-2-76-5w File: HY-4 R.P4 p.s L-'/To?fr C S Kent Engineerirg Pro)ect Hnnager Florida Power 6 Light Company P 0 Box 013100%hami, Florida 33101 ggcgLW vps tA gs l~1 o)1',li~<gt>t~~C uc'~<l..~~''gi',t&aL.
afier maintenance
 
or opera io..of the unit in wrong rotation whi!c installing
==Dear~fr Kent:==
mtor lea"s.To ass're that the Io"kirg nuts are properly applied, we are expand!no the inst2 I I a-: Ion/esse-."!y
ST LUCRE PLPZiT 1979-890 llil (c)E'T25ION-Uil?T NO.2 CO.'O'All~i".i.SPiXKY PZfPS Re: 'r.u".'-~~'I>~~i pgfi  
ins if u tions to clarify this op rati"n.In addition, we are also investigating
 
oiher metho"s of positively
==Reference:==
lockirg the n.-s to the s!.i-: to preven loos ning, L e anticip.te thai his m.thod will De finalize in time to"e i~p Iemented on the present contract.On the units in the',.'-IC it is accep.able
 
to tack weld the two nt ts tcge-,he a~e~i'hey are pro.-.e.-Jy
PAL Letter FLO-566 dated November 2, 875 Pur uant to your rcauest we have been advised by Ingersoll-Rand (in their letter of January 23, 1976, a copy attached)that as a result of tne mess rcs und=rtak n t'.".e problem of loosenin" of the Impeller nuts and gasket leakage as experienced on RlB Pumps at Turkey Point Station vill not be repeat D on St Lucie Unit>>o.2 Containment Spray Pumps.i)Presently I/?is investigating the use of other a thods to ensure that the I=p'er locknut does not loosen itself.However, as a mini"um the locknuts will be shop-tack velded.ii)aae problem of gaslwt leakage has been resolved by utili" ing nn EPT'0'ing in lieu of a flat fiber vasher between the shaft and shaft sleeve.I/R has also given assurance that any modifications made in future to improv the d si n of these type of pumps vill also be used in the de-sign o=St Lucic iso.2 Containment Spray Pumps.  
instaile"'.
~, Q/Q<')pp C S Kent EBASCO SERVlCES 2 Peb~ry 3 1976 SL-2-76-54 We ho the above info~tfon gill answer all your questions.
Proper installation
Should e ope brua 20 1976.y ou desire any further clarfficatfon please advise by Fe ruary Very truly yours, P J Sgeeney, Jr Chief Hechanical-Huclear Enginerr Attachment XH:lh cc: 4 H Rogers, Jx (2)B Z Ynrfg C B Icos A D Schmidt H D 1!ant" K H Harris 0 El Gray P.A D Loren=o J F.Vessely G Crogell L Borchardt L Vsa~fris D J Stephens J C P~~ondo J D Di"tel G N Leamon T 0 Hathisen Supervising Engineer~y!J PPt}}
should be fo torque the ja-..nut into pla"e then whi!e holding the jam nut to pre;ant rotation tc"qua the cap".t in o place.'I'fe apol"=i-=',or such a la.e response but as indicated aBove, we were un-aware n!a.-y serious problems prior to your letter.I f theP-"e any qu t ions, please fee I frcc to conta" t thi", of f i cn or our Hart for"~ranch of i i..".C/2 C/2 r'e Com)ust I on Eng i neer I ng Attn: lf.C.Stnndin R.J.Landrigas I-R llartford, C.Bricklcy (I)n n riant 0 h A~n (I)Very 1ruly your I tiGERSOLL-Rh:<D
CO'Ipi'.'!
(~~/P7: 'c~/tt.f.De.'tnrdo Camcron Iluclear Pun'ion  
l~4 CC>>PYEBASCO SERVlCES.Its'Ol>OL+TCO February 3, 1976 SL-2-76-5w
File: HY-4 R.P4 p.s L-'/To?fr C S Kent Engineerirg
Pro)ect Hnnager Florida Power 6 Light Company P 0 Box 013100%hami, Florida 33101 ggcgLW vps tA gs l~1 o)1',li~<gt>t~~C uc'~<l..~~''gi',t&aL.
Dear~fr Kent: ST LUCRE PLPZiT 1979-890 llil (c)E'T25ION-Uil?T NO.2 CO.'O'All~i".i.SPiXKY PZfPS Re: 'r.u".'-~~'I>~~i pgfi Reference:
PAL Letter FLO-566 dated November 2, 875 Pur uant to your rcauest we have been advised by Ingersoll-Rand (in their letter of January 23, 1976, a copy attached)that as a result of tne mess rcs und=rtak n t'.".e problem of loosenin" of the Impeller nuts and gasket leakage as experienced
on RlB Pumps at Turkey Point Station vill not be repeat D on St Lucie Unit>>o.2 Containment
Spray Pumps.i)Presently I/?is investigating
the use of other a thods to ensure that the I=p'er locknut does not loosen itself.However, as a mini"um the locknuts will be shop-tack velded.ii)aae problem of gaslwt leakage has been resolved by utili" ing nn EPT'0'ing in lieu of a flat fiber vasher between the shaft and shaft sleeve.I/R has also given assurance that any modifications
made in future to improv the d si n of these type of pumps vill also be used in the de-sign o=St Lucic iso.2 Containment
Spray Pumps.  
~, Q/Q<')pp C S Kent EBASCO SERVlCES 2 Peb~ry 3 1976 SL-2-76-54
We ho the above info~tfon gill answer all your questions.
Should e ope brua 20 1976.y ou desire any further clarfficatfon
please advise by Fe ruary Very truly yours, P J Sgeeney, Jr Chief Hechanical-Huclear
Enginerr Attachment
XH:lh cc: 4 H Rogers, Jx (2)B Z Ynrfg C B Icos A D Schmidt H D 1!ant" K H Harris 0 El Gray P.A D Loren=o J F.Vessely G Crogell L Borchardt L Vsa~fris D J Stephens J C P~~ondo J D Di"tel G N Leamon T 0 Hathisen Supervising
Engineer~y!J PPt
}}

Revision as of 17:40, 17 August 2019

Responds to NRC Ltr Re Violations Noted in IE Insp Rept 50-389/78-10.Corrective Actions:Presents Explanation of Problem W/Loose Impeller Locking Nut & Why Incident Was Not Reported to Nrc.W/Encl Correspondence Re Issue
ML17206A612
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 12/19/1978
From: Robert E. Uhrig
FLORIDA POWER & LIGHT CO.
To: Murphy C
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17206A611 List:
References
L-78-391, NUDOCS 7901180316
Download: ML17206A612 (13)


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P.O.IIOX 013100, MIAMI.FL 33101FLORIDA POIlVER a LIGHT CO'".PA/.~December 19, 1978 L-78-391 Mr.C.E.Murphy, Chief Reactor Construction and Engineering Support Sranch U.S.Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr.Murphy:

Re: RII:RWW 50-389/78-10 Florida Power&Light Company has reviewed the subject inspection report and its response is contained in Attachment A.There is no proprietary information con-tained in the report.Very truly yours,~gj g.>>c Robert E.Uhrig Vice President REU:LLL:cf Attachment cc: Mr.James P.O'Reilly Office of Inspection and Enforcement Harold F.Reis, Esquire 1 I ATTACHMENT A RESPONSE TO RII:RWW, 50-389/78-10 Findin 1: 2 Inch Tar et Rock Safet In ection Valve Deficienc The RII inspector noted that both CE and the RII had informed FPL of an excessive pressure drop with the subject valves, and that FPL appeared to incorrectly evaluate the incident as non-reportable, contrary to CE's conclusion that it indeed was reportable under 10 CFR 50.55(e).~Res onse: Me wish to note that 10 CFR 50.55(e)clearly states that the holder of the construction permit is responsible for the determination of whether a construction incident is reportable, and not the NSSS vendor.FPL has used the assistance of a number of parties, including CE, in its determin-ation of the reportability of this item, but by no means does the opinion of an outside organization bind us to its conclusion.

It appears that the major difference between RII and FPL, regarding the reportability of this item, lies in the interpretation of the phrase in 10 500 50.55(5(11(,"~iifl 5 fl 1 1 fl 1 d fg." (5 dl added.)FPL's review of this problem concluded that the issue was a valid safety-related defect, but not a significant one;therefore, no reporting was required.This judgement is based on the fact that (1)the valves were not to be installed for sometime, (2)the problem was identified through normal gA channels (via CE), and (3)the repair was minor and easily performed without extensive evaluation or redesign.Based upon the above, FPL must take exception to the findings noted by the inspector.

It is FPL's opinion that problems such as the above, identified and resolved through routine channels, are normal repair items typically encountered on a construction site.Due to the fact that safety-related equipment was involved, FPL invoked the evaluation procedures and maintained records of the resolution to ensure proper handling of the issue and compliance with the appropriate gA procedures.

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TTACHt<ENT A-RESPONSE TO RII:RWW, 50-389/78-10 Page 2 Findin 2: In ersol 1-Rand I-R Low Pressure Safet LPSI and Containment S ra Pum CSP Oeficienc The RII inspector noted that FPL knew of a problem with an impeller locking nut assembly working loose at one of its other plants (Turkey Point)in November 1975 and was informed by RII on August 23, 1978 of the potential deficiency as well.-The inspector further states that despite"knowledge of this potential significant deficiency in final design" FPL failed to report the matter to the NRC in accord-ance with 10 CFR 50.55(e).~ll 2: This issue arose from FPL's concern over a maintenance item.The Turkey Point problem was resolved by tack-welding the nut tight, and in 1975 FPL requested assurance from I-R that this or some other satisfactory method of securing the locknuts for pumps to be supplied for St.Lucie Unit 2 would be provided.At this time the pumps were not yet'manufac-tured.Me are attaching copies of our correspondence on this matter, which were not available to the inspector, which we believe will further clarify the issue.Our opinion on the significance of this item is the same as that for the finding above.This is a minor item, picked up by FPL's normal gA and preventative maintenance program and is non-reportable.

Further, a deficiency either in final design or construction, has not been identified with the pumps supplied for Unit 2.Based upon the above, FPL must take exception to the finding noted by the inspector.

FPL believes that utilities which use the experiences of other units to uncover and correct problems before they develop, as happened in these instances, should be corenended, and not found to be in blanket non-compliance with NRC reporting'procedures.

Should RII disagree with our interpretation of"significant", we suggest that further discussion to clarify the issue may be appropriate.

~.l I f~r.~.c u+Vta>m, NIMBI, SLORIDA 3llOI~lFLORIDA POWER 5 LIGHT CO:.IPAiV November 21, 1975 EBASCO SERVICES, INC.Two Rector Street New York, New York 10006 Attention:

/.COMBUSTION ENGINEERING P 0.Box 500 Qindsor, CT 06095 Mr.L.Tsar.ris, Project Manager Attention:

Mr.A.S.Janeson, Project Manager (ST-IVCIE PLANT UNIT 81-1974-890 Kf INSTALI KTION UNIT 82-1979-890 Kl EKTENSION ST.I.VCIE UNIT f/2 PSL 2 LPSI AND CONTAIN-hT SPP4Y PlM'S PILES: CE-950-0775 AND NY-422527 FL0-566, FF-860 Gentlemen:

P.L's Turkey Point nuclear units we use pumps for Residual Heat Removal ervice which are of the same brand (I-R)and similar in design to PSL 2 JZSI"nd contain-ent spray pcs.During disassembly'of the Turkey?oint pumps for seal maintenance it vas ooserved on more than one occassion that tne impeller locking"..-arse-bly had worked loose.F?L tack-welded the loc::nut assemblies to preclude the possibility of loosening.

Indica"fons from the local I-R representative are that the impeller locknut assemo'es to be usec a:?SL 2 are the same as those furnished at Turkey Point.Please obtain assurance from I-R that they vill provide loc'Inputs secured=y tack-welding or some other satisfactory method.Also since there was considerab~e difficulg experienced vith gasket leakage at Turkey?Oi=t please obtain from I-R assurance that we vill not have this problem a" S=.Lucie 2.Yours very truly, RLS/m=b'ee Attachment

~v C.S.Kent Project Manager 6 X O~-r,b ,h;~'3 q4 ib Ig M.'.Jameson 0 N er 21, 1975 RE: FLO-566, PF-860 ccrc Hra Mr.Mr.Mr.Hr.Mr.Mr.Mr.Mr.Hr.Mr.Mr.Mr.Hr.Mr.Dr.Mr.Mr.Mr.C.B.Amos Lou Borchardt G.E.Crowell R.A.DeLorenzo J.D.Distel J.H.Risher 0.R.Gray K.N.Harris R.W.Kammann J.L.Legier G.N.Lemmon J.E.Ramondo W.H.Rogers, Jr.A.D.Schmdit D.J.Stephens R.E.Uhrig J.E.Vessely C.E.Waddell L.J.Weber N.T.Weems

'i-E Power Systcins ,, Combusr<on r ngulcrrinrr, Inc.00 Prosper.'rirl Road sor.Ccnnccncut 06095 Tel 203/063 lgl l Telex~J iJ2J7~pOVlf:-R~SYSTEMS April 6, 1976 L-CE-1328 St.Lucie Plant Unit No.2-1978-890 i'xtension Mr.C.S.Kent Enr ineering Project Manag r Florida Power&Light Co.P.O.Box 3100 Miami, Florida 33101

SUBJECT:

LPSI PFG'S

Dear Mr.Kent:

FP&L letter FF-860 of i".ovenber 21, 1975 advised C-E that you had experienced on the Turkey Point plant loosening of the impeller locknut assembly on t.ho In crsoll-Rand residual heat rcr oval pumps and Basket leakage, and requested ance from the a nufacturer that these same problems would not occur with nit 2 LPSI and containment spray pu=ps.Ve have taken uu this r.".atter with Ingersoll-Pand, the supplier of the LPSI~, pumps i;l the C-E sco"=, and t.ley)lave respond d to the concern about the lnce-nut.assembl" (but not the gasket lea'kage problem);two (2)cop'es of the In"ersoll-Rand letter of"..arch 23, 1976 are attached for your in.ormation.

ie will"o back to Innersol-:=--..d to detert ine what remedy tlrey propose to elitlinate

~~~ni gasket I::ak-e p ob".:.,a t you lrave i"ced on the Turkey Po int pumps an: will le'o-".ow their resp=nse to this other concern as soon as we receive it.Uery truly yours, ASJ/es Enclosur s (")CC: T.L.J.E.L.W.0~~~w/]D 7'~-.i 1 R.S.".nt osuosso R=: "..sen AD DeLorenzo Lcskovjan H.Roger , Jr.K.Harris C.Crnwell C.W.Dakin B.J.Escuc J.R.Cindi r R.W.Knmvinnn S.W."Srrablr ry C.E.Vnddel l E.H.Srrr t r DP1~.l eh)r';~~)~','.;(,'~"I s l t I.I"'rot\"rlr Ar R vl~T'I i':.r'.~g i~I'I~'.l~>its J'>>:tl~r/Žz/A.S.Janeson Project Manager F>.a r.co-e;va,er.T.crir-0 F Q t,'m~aD.a OH-I-.:km:~aD CCm~~~camvZ Za ft~san'PHILLLPSGURG, N.J.08bdS Combustion Engineering, Inc.IOOO Prospect Hill Road)windsor, CT 06095 23 MR 76 Attention:

Mr.A.S.Jameson Project llanager

Subject:

Florida Power C Light St.Lucie Unit P2 C.E.P.O.9500775 LPSI Pumps I-R Ref: OOI-35382

Reference:

(A)C.E.letter L-PCE-408 dated l9 DE 75.entlemen: response to Ref.(A)on shaft/impeller locking nuts, I-R nas in:esti-aated several occurrences in which the locking nuts lo"sened and fn nd that the causes were either improper installation afier maintenance or opera io..of the unit in wrong rotation whi!c installing mtor lea"s.To ass're that the Io"kirg nuts are properly applied, we are expand!no the inst2 I I a-: Ion/esse-."!y ins if u tions to clarify this op rati"n.In addition, we are also investigating oiher metho"s of positively lockirg the n.-s to the s!.i-: to preven loos ning, L e anticip.te thai his m.thod will De finalize in time to"e i~p Iemented on the present contract.On the units in the',.'-IC it is accep.able to tack weld the two nt ts tcge-,he a~e~i'hey are pro.-.e.-Jy instaile"'.

Proper installation should be fo torque the ja-..nut into pla"e then whi!e holding the jam nut to pre;ant rotation tc"qua the cap".t in o place.'I'fe apol"=i-=',or such a la.e response but as indicated aBove, we were un-aware n!a.-y serious problems prior to your letter.I f theP-"e any qu t ions, please fee I frcc to conta" t thi", of f i cn or our Hart for"~ranch of i i..".C/2 C/2 r'e Com)ust I on Eng i neer I ng Attn: lf.C.Stnndin R.J.Landrigas I-R llartford, C.Bricklcy (I)n n riant 0 h A~n (I)Very 1ruly your I tiGERSOLL-Rh:<D CO'Ipi'.'!

(~~/P7: 'c~/tt.f.De.'tnrdo Camcron Iluclear Pun'ion l~4 CC>>PYEBASCO SERVlCES.Its'Ol>OL+TCO February 3, 1976 SL-2-76-5w File: HY-4 R.P4 p.s L-'/To?fr C S Kent Engineerirg Pro)ect Hnnager Florida Power 6 Light Company P 0 Box 013100%hami, Florida 33101 ggcgLW vps tA gs l~1 o)1',li~<gt>t~~C uc'~<l..~~gi',t&aL.

Dear~fr Kent:

ST LUCRE PLPZiT 1979-890 llil (c)E'T25ION-Uil?T NO.2 CO.'O'All~i".i.SPiXKY PZfPS Re: 'r.u".'-~~'I>~~i pgfi

Reference:

PAL Letter FLO-566 dated November 2, 875 Pur uant to your rcauest we have been advised by Ingersoll-Rand (in their letter of January 23, 1976, a copy attached)that as a result of tne mess rcs und=rtak n t'.".e problem of loosenin" of the Impeller nuts and gasket leakage as experienced on RlB Pumps at Turkey Point Station vill not be repeat D on St Lucie Unit>>o.2 Containment Spray Pumps.i)Presently I/?is investigating the use of other a thods to ensure that the I=p'er locknut does not loosen itself.However, as a mini"um the locknuts will be shop-tack velded.ii)aae problem of gaslwt leakage has been resolved by utili" ing nn EPT'0'ing in lieu of a flat fiber vasher between the shaft and shaft sleeve.I/R has also given assurance that any modifications made in future to improv the d si n of these type of pumps vill also be used in the de-sign o=St Lucic iso.2 Containment Spray Pumps.

~, Q/Q<')pp C S Kent EBASCO SERVlCES 2 Peb~ry 3 1976 SL-2-76-54 We ho the above info~tfon gill answer all your questions.

Should e ope brua 20 1976.y ou desire any further clarfficatfon please advise by Fe ruary Very truly yours, P J Sgeeney, Jr Chief Hechanical-Huclear Enginerr Attachment XH:lh cc: 4 H Rogers, Jx (2)B Z Ynrfg C B Icos A D Schmidt H D 1!ant" K H Harris 0 El Gray P.A D Loren=o J F.Vessely G Crogell L Borchardt L Vsa~fris D J Stephens J C P~~ondo J D Di"tel G N Leamon T 0 Hathisen Supervising Engineer~y!J PPt