TXX-9234, Informs That EDG Insps Scheduled for Second Refueling Outage Deferred Until Third Refueling Outage So Cooper Enterprise Clearinghouse & NRC Can re-evaluate Impact of Outages Required by Design Review & Quality Revalidation Program
| ML20141M337 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/06/1992 |
| From: | William Cahill, Walker R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TXX-92348, NUDOCS 9208110360 | |
| Download: ML20141M337 (4) | |
Text
..
h
==== G Log # T X-92348 File # 10010 909.GA E
E Ref. # 10CFR50.59 i
TUELECTRIC August 6, 1992 WlH1ani J. Cahill, Jr.
Groq Vice tres> Jeu U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) - UNIT 1 DOCKET NO. 50-445 DEFERRAL OF THE EHERGENCY OIESEL GENERATOR INSPECTION FOR CPSES UNIT 1 SECOND REFUEllHG OUTAGE Gentlemen:
The purpose of this letter is to inform the NRC of a deferral of the attached Emergency Diesel Generator (EDG) inspections.
These inspections, which ha1 been scheduled for the upcoming second refueling outage, are being deferred until the CPSES Unit 1 third refueling outage.
TV Electric has completed the 10CFR50.59 safety evaluations and has concluded that this 4
deferral does not involve an unreviewed safety question, i
These inspections are being deferred to minimize EDG outage time during the upcoming refueling outage while the Cooper Euterprise Clearinghouse and the NRC re-evnluate the impact of the outages required by the Design Review and t
Quality Revalidation (DR/0R) Program.
The impact of the DR/0R Program is being re-evaluated in light of the recent industry efforts to assure EDG reliability (such as NUMARC Initiative SA) and the contribution to core damage probability from EDG outages during refueling outages.
Sincerely, W
'N h.
h William J. Cahill,~Jr By:
M s
Roger"0. Wal ker Manager of Regulatory Affairs for NE0 MCP/grp Attachment c - Mr. J. L. Milhoan, Region IV Resident Inspectors CPSES (2)
Mr. T. A. Bergman, NRR 920B110360 920806 h
.-PDH ADOCK-05000445 if G-PDR l
400 N. Ouve strect LB. Bl Deltas. Texas 75201 1
y, 13 m na
- ao re -
p il
- rr a t
g.
O
.wJ-n
' 02-350t. '
.. ~.O d 1.. Perform a visual inspection of
- ,.3 3'-.
Cam shalt= Assembly
,all cast lobe surfaces ~for signs.'
'Any signs'of cracking, pitting.
.n 3
'spalling.
' pitting,-or
- or.spalling shall be followed by
- of cracking, n
a detailed analysis t o evalua!.e 4
L the espected Ilfe based on the size and estent of surface M"
. distress.~~Any Corrective p
- ff.
< measures implemented by this e
.:.J analysis, signs of spelling in
'. [c.
f* '
shall result in immediate reptacement of the cam.
Periorm O
37. i 4
{'
.an additional inspection by Eoc2 1
on exposed or accessible 2
assemblies. Heft.TSI g
l Instruction Manual, Volume I,.
S Melntenance Schedule. Also tc but pqrformed one time 4t. 5 years -
consistent.with.Compenent y..
v
" 02-340A/a.
~
g.
l a-i:
.t i
.'02-313A 3
I 1.' Perform. a visual inspection of :
fa
' Crank:ase Assembly the vertical; pertion of ' the.
.The first'inspectioft after 185'.
O s
' hours ofiat or.near full load 3:
craakcase arch well to the nut.
pocket area for~ indications of
" operation may be used to justify :
n 2
ct.-
. cracking.
the discontinuation of-auch.
f-
.. Inspection until an overhaul.
For engines with Lless than-185
@~
i i
- hours operation at.or'near' full-(
i
~
g" 1
load,sinspect~at. each EOC until 4
'esceeds 185 hours0.00214 days <br />0.0514 hours <br />3.058862e-4 weeks <br />7.03925e-5 months <br />.
D' l
I
}'
rt
{
S:
3 De -
3-g i.
S lts O-rt..
02-8 MB
- 3... Clean ' tins on Intercooiar s and "
W Olesal Startlog Alt Compressors aftercoolers.
r-rt
/
02-8158.
4'. Inspect :. I nt ake filter element, a
. Diesel starting Air
' replace If necessary i.'
Compressors.
02-835e'
- 15 '. Change compressor oll at each -
1 Dissal.Stasting Alt.
W, or. H monthly sampilnq ls
. Compressors!
perforsed, change:as required )
' based on results.
T i
't
+.
,.,.,.y w
r o
,s a
w.,
ce-s
.m.
a
,s
o
'. 7 k i; ;;
o-
,.oo
'e M
- n.
o-N-.
-:02-8358 6. Check belt' tension Diesal Starting Air N
Compressors..
p-
' y p
~
02-9358 7. check pulley clamp bolts and set p
Diesel Start 8pg Air sesews tight.
Compressors Q
C.
mme
.I M
1 N
O E
I 'l 02-550 1. visually inspect foundation for g
break s.in t he bond bet ween t he Foundation Bolts 7
sole plate s' and grout.
m 11e r1
-o rt 02-345A
'.1.- Visually inspect intake and'
- Complete TDI Inspection and 0
Intake and Exhaust-c, exhaust tappet assembly --
Maintenance Report Fore No.-
x.
- ondition, and veri!y that
-345-1 as applicable. TDI X-Tappet Assembly',
can rollers are free to Instru.jon Manual. Volume 2
-rotate and that there is Do I. Section 6'.
Refr: TDI:
y' noticeable clearance between lastruction Manual, Volume n
the can rollers and the
- 1. Maintenance Schedule.
e roller pins. Do this by' Perfore an additional 2
sanwally checking,for excessive inspction by EOC2 on 2
action and v2sualty observing exposed or accessible 5
for abnormalities on the mating -
sssemblies. Also perform one surfaces.
time at 5 years consistent with.
e-Ccaponent 02-340A/B ltet 2.
g 02-3458 l1. ' Visually inspect fuel tappet-assembly condition, and verify Complete TDI Inspection and l
. Fuel Tappet Assembly.
.that can rollers are free to.
Maintenance Report Fors No, r
rotate and that there is no 345-1-1 as applicable. TDI.
rt
' noticeable clearance between Instruction Mansal. Volume 4the can rollers and the roller -
- 1. Section 6. 'Also pericra pins. - Do this by manually one time at 5 years consis-
.'checkit.; d visually observing '
for excessive-tent with Component
' sotion an 02-340A/B Item 2.
Perform for abnormalities cri the.
an additional inspection by sating surfaces.'
EOC2 on exposed or accessi-ble assemblies.
e g
"N>,
. m ! c' s
y-n.
It m
...a.
w :r 4
3.
- 'O ts '
mn
_.n.
.w-
.n Lo.
1
'02-390F 2.. Rennstall and adjust lifters Also to be performed one time at t c Hydraulic Valve EOC2 and at 5 years on a y;
,, g g g,,,
sampling basis consistent with x.
. Component 340A/S.
4 p
p-r W..
Note Ensure lifters are rt m
installed with f!!! holes up.
verif y co*Jit ion of lif ters by comparison of_ letter leakdown O
rate factuali to specifications noted on TD1 Maintenas.ce Manual, Ssction 6-B 5.
g 7
o 2
M.
N O
D. '.
I
..02-805B
' l.. Inspect ai r, Intake / oil bat h s
Int abe Ai r Flita. r. -
filters.
Replace or change oil if.
D necessary.
If samp!!ng is.
m-utillred change ba*ed on i
analysis'results. -Inspection f '.
n i;
frequency may be, % s required" et
!! filter:d/p or turbocharger' H
inlet pressure is monitcred.
O 3'
NX ps H..
D 02-310B
. l... Inspect and measure thickness of--
' Perform Inspection on brg's 5 s 3
rt -
S
' M'iln' Bearing shells'
- .all main bearing shells.
' 7 for'OSRV's on one Inspection shall evaluate'
' ehgtne/ station at EOC2..
At one i
bearing wear and evidence ~of time'5 - yr inspection,. inspect n.
P harmful crankshaft misalignment, l'
- TDI~ recommendations for beg's'3 thru 8. ' Complete'TDI e
' implemented.
Lshould be Inspection and Maintenance crankshaft' realignment 3
Record. Form No.-310-2-1 as O
applicable,:TDI Instruction Manual,' Volume 1, Sectlon 6 --
g one sheet 'for each main bearing Use' Volume I, App. ill for, r
ft clearance values. Also inspect
- when removed consistent with CO
- Inspect *ons required for
- 1 "
Compo wnt-02-310A,(CrankshafL).
1 4
5-Y f
T
. h,"
y
-,'.g.W-i
.e.
e p.
3 4
3
-