ML20031E671
| ML20031E671 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 10/07/1981 |
| From: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR NUDOCS 8110160297 | |
| Download: ML20031E671 (18) | |
Text
.
B ALTIMORE G AS AND ELECTRIC COMPANY P.O. B O X 14 7 5 B ALTIMO R E. M A RYL AN D 21203 AnTMum E. LuosovALL.JR.
s.es enes,es,
tM 4
so ~
p October 7, 1981 A
h.ocri 5 iggy, _9
.n _4 p, hassee U.S. Nuclear Regulatory Commission Q
Division of Licensing g
3 h.
9 Washington, DC 20555
~
AT'rENTION:
Mr. Robert A. Clark, Chief Operating Reactors Branch #3
SUBJECT:
Information Request hegarding Station Blackout Unresolved Safety Issue A-44 Calvert Cliffs Nuclear Power Plant Units No. 1 & 2, Docket Nos. 50-317 6 50-318
REFERENCE:
a) Letter to A. E. Lundvall, Jr., from R. A. Clark dated July 9, 1981, same subject Gentlemen:
The attached tables from reference a) have been completed and are provided for your use in determining the reliability of the onsite standby diesel generators. Your analysis should take into account that Calvert Cliffs Unit 1 and 2 are serviced by a total of three diesels. One diesel is dedicated to each unit and number 12 diesel is a swing diesel serving both units.
Our review of Enclosure 2 from reference a) concluded that Licensee Event Reports for Calvert Cliffs Unit 2, Docket #50-318, were omitted. A list of the Unit 2 Licensee Event Reports is attached and cross referenced to the LER Abstract Numbers that were used in Tabit 3.
If you have any further questions or comments, please do not hesitate to contact us.
Very truly yours, Vice President - Supply AEL/DWL/gla I
p Attachments f
gl g
T lM*i%i'ofsso%
_ g
Mr. Robert A. Clark 2
October 7, 1981 cc:
J. A. Biddison, Esquire G. F. Trowbridge, Esquire Director, Office of Inspection & Enforcement R. E. Architzel, NRC Resident Inspector g -
b
- -- ~. =. :- w l,
, - Pg g $ h3 Tant.E 1 Diesel Generator Ope rationu Dat a Pl esu t teame 5.
i Calendar Year 19 76 Unit lin,
1&2 Itcanon for DG llumb a r thout cr Percent Duration of Hun operatson, & actieduled DG of of 1.nading of lie f o re Stop For Identification of Failure Duration of Hun tio.
Starts
- Failure, DG (EU)
Each 20 Failure (Hef er to attached I FRs or rable 3)
Tech. Spec He<3'd Test Weekly Surveillance Test 11 46 1
100 0
- 39 1 Hour, 1 Start / Test 12 44 2
100 10 Min. 15 tiin.
- 37, #38 21 23 2
100 60 Min',
O flin.
f:
Docket No. 50-318, LER's #76-02/3L 76-18/3L Monthly Surveillance Test
['
1/2 Hour Run Starts / Test 2; 11 24 0
100 i
4 12 48 0
100 2_ 21 24 0
100 DG Actual Demand Starts not for Tusting
. 12 0
1 0
- 40
/
litsce?.laneous Tests (Specify Type)
Operabi?f ty Verification 11 14 0
10 During Maintenance 12 16 0
100 Start Only 21 14 0
100 m
l
}
- w _.=
, - Page 1 Tant.E 1 j
Dicael Cencrator operations Darn riant na-Calvert Cliffs N <
Unit No.
Calendar Year 1921 J_t 7 iteauon for Da 13 umber Hu=1,cr
?creent nuration of Run operatson, & actieduled DG of of Loading of Defore Stop For IJentification of railure Duration of Rnn No.
St a rt s
- Failure, D0 (Ku)
Ench DC Failure (Hefer to attached I. ens Tech. Spec Ite,3'd Test or Tabl e 3)
Weekly Surveillance Test
__ U_
R1 3
Igg
_5. n; in ming.
-- #32. #31. 430**
l 1 Hour, 1 Start / Test l
12 50 4
100 5
s_ n c minc
- 36, #35, #21 LER 77-23/3L ***
It 21 50 2
inn
_n[n'mine,
_ Docket No.50-31R IFRe. 77-28/31*. 77 q Monthly Surveillance Test j
1/2 Hour Run Starts / Test 2 11 46 0
100 i
4 _12
', __88 0
100 I
2 21 46 0
100
- i i 4 Refuelin 1 Hour, g Outage STP 1 Start / Test 11 2
- 0 100 I
12 2
0 100 21 1
0 100 DC Actual Demand starts not for Testing
/
Hisec11aneous Tests (Specify Type)
Operability Verification 11 15 0
100 During Maintenance 12 16 0
100 l
Sta'rt Only 21 15 0
100 DPower Available-Slow Starts
^
D* Power Available-Small Fire Occuired 0** Vent fan failed diesel
-. tested SAT. _,,.
~
.r
,,' i 1:pele:ura 1 - yegt.
l*lant llamy Calvert Cliffs. *.; g Tt.tll.E 1 litccol GIncretSt Opes et tosa fix$n lIn8E Hn.
1&2
~
' l Calendar Year 19 18 Itcauun for IX1 Ilusal.or Ilumine r l'e rcent Durat (on el lhen operation, & actieduled DG of of Iondlun qf
!!afore Stop l'or Islent ification of Fallurc n.. a 1on af Itun tlo Starta Failiorce DC (RI)
Fncti tid 1 nj p,gre _
jjic.te r I a ae t actieJ I.I'Rs or Tale t c 1) u Terli. Spec iteq'al Test 33 97 3ng Weekly STP 1?
27 100 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, 1 start / test 21 28 100 Weekly STP 11 25 50 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, 12
_ 26 1
50 ___
5 min.
- 24 1 start / test 1
_2.3 3
50 Emin, 5 min, 29 min. Docket 31'd LER's 78-25/3L, 78-15/3L g
78-2/3L Starts / test Monthly STF 2 _ H._ _3h 100 y;;
. 1/2 hour run 4
12 68 100
[
2 21
_3) 100
~ 'b
~
i I
Refueling STP 11 2
100 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> run 12 2
100 l
1 start per test 21 1
100 I
DG Actual Demaspl
+
Starts not for i
tuuting 11 2
O min, O min.
- 20, #25 12 1
1 i
lilacellaneous Tests (Spec (fy Type)
_11_ ___1.h I Operability Verification 12 ic 13 during Maintenance 21 (Start only)
O
I
~
- g es m,o
. I.
Enclecure ) - P:p I'lunt flamy Calvert gliffs**2 1 5,
TA11% L lit.acci Canarctgr Operction: 11 :50 pnt s. Hu, ira Calendar Year 19 10
,J l lieriaan for Ni llunt.o r liusul.c g-l'o rcen t I)uration of' Jinn
~
operation, & acticJuled DC of of 1.oading; gf lieforo Stop For I.lenl 4(Ication of Failure hier at ion of Itun tio, _ 5 tarts Failures IW: (Kl!)
Enct, DG Fnj h,
jgfer t o at ractied I.P.Re or 'Qlc 3)
Tecli. Spec Iteq'ai Test 11 25 _ _ _ _
2 50 15,10 min.
i J16. #3h Weekly STP 12_
25 2
50
- 5. 10 min _.
- 17. #13 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, 1 start / test 21 25 1
50 0 min.
Docket 318 LER 79-17/3L Weekly STP 11 2P 100
, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, 1 start / test 12 19 100 j
A
__J 8 100 Starts / test Monthly STP 2
11 h2 100 1/2 hour run 4
12
_8,h 100 2
21 h2 100 l l-g j
Refueling STP 11 1
50 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> run 12 2
50 g
1 start per test 21 1
50 LMI Actual Demand i
Starts not for i
Testing i
t i
Hli.collaneous Tests I
(tipecif y Type) 15 lOperabi.LityVerification 21 14 1
0 min.
Docket 318 LER 79-23 14 (Start only) 21 Continuous Run While 11 1
Docket 318 LER 79-3'/1T 9
i Air Start Systems Were 12 1
- 15, #12 Upgraded
__21__
1
l
^
^.
.$ 1 l
Enciruro 1 lvert C,liffs *<.; g l,e ge-l' inns llamy Ca TclE 1 lits:s1 Ciners.tcr Operation 3 flys pr.t c 110, 1&2 Crtenilar year 1910, l
0 Itcanon for IMI Ilumlear
'}iuml.o r l'e r cen t lluratjun of Ilon operat8on, & actieduleil DG of of I.oniling 92 Daforn Stop for Islent lf $ cation of l'allurc I).ornalon of Hun lln Starta Failure T10 (Kil) t'acli Ita l'n jiu3,e_
(j!cler to a t t ac! e,I 1.Pne e r Ta,Is le 1) g Tech. Spec Iteq'il Test 11 53 1
50 _
15 min.
- 3 Weekly STP 12 hh 1
50 Left 7_unninF 13 hrs.
- 5
- 1 Hour, 1 Start / test 21 47 1
50 0 min.
Docket 318 LER 80-16/3L
- t Starts / test Monthly STP 2
11 hh 0
50 1/2 hour run 4
12 88 0
50 8
2 21 J9 0
50 Refueling STP 11 1
0 50
~'
1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> run 12 1
0 50 1 start per test 21 1
0 50
~
i I g
t l
I e
DG Actual Demaspl i
Starts not for i
Tuting 11 1
0 50
- 6 (D.G.'s performed acceptably 12 1
0 50 They were shutdown before 21 2
0 50 SIAS fully reset, generating an alarm) i i
t i
fliscellaneous Te1its (Specify Type) 11 1h 0
50
! Operability Verification 12 14 0
50 (Start only) 21 14 0
50 Continuous run while air 11 1
0 50 Docket 318 LER 80-33 start supports were made 12 1
0 50
! seismic 21 1
0
. 50
- Emergency Power Available - Slow start
Enclosuro 1 - Pcgs 2
- ~ ' -
TAul.E 2 ptesel Generator Scheduled Downt tino nucord Plant Name Calvert Cliffs' Colandar Yeas 19 3 Unit No.
1&2 Ilours of Downtimo Henson for Reactor shutdown Reactor not shutdown Commente Downtime
~I]Up 1Cf'~ 71Cf~llCF 71Cl-VUf 7)T F liCl' 7'dF TdF 11 12
. 21...
. Scheduled I1 12 21 Hatntenance 73 58 l
t Preventive Maintenance 12 16 62 71 Equipment Modification 29.5 relief valves, parts scavaged from #21 i
?
?
I:
d' b
t 4
i I
NOTE: D/G #21 not shown, beause Unit 2 not operational.
i I
Time DC 1s unovalloble f or e:nergency service because of required i
I j
tests l
t 4
f Enclosure ! - Page 2 ut.E 2 temal Cen retor Scheduled Downt lue Record Plant H:me Calvert Cliffs
- Calendar Year 1917 Unit No.
1&2 i
Ifoura of Downtinae Henson for Henctor shutdown Reactor not shutdown Commenta
)
DownL1me lQ ~ 'lCF~ 7)CF'71CF' 71CJ~ El 7)W ~} igg pag Ody--
11 12 91 11 12
. 21
,l Scheduled i
],
Maintenance 30 92 75.5 24.5 t
l I
l Preventive Maintenance 13 11 75 69 35 1
i*
4 i
l.
i s/
i i
l I
I Time DC is unovelloble f or c:nergency service because of required tests l
$I Enclosure ! - Page 2 2
I sel Cenarator Sctieduled Downtime Re ord l*l ato t Nesso Calvert Cliffs
~
Calendar Year 19J_8 Unit No.
162 f
Ilours of Downtime Henson for Reactor shutdown Reactor not shutdown Coma.cnts 1)ownt ime nu-pgy q my-pgy y g-7ppggy qpgpggg ggg-Scheduled H41ntenance 18 10 85.5 62.75 58 f
Preventiv9 Maintenance 14 18 12 70 74 69 4
d
.1
.i I
l i
i r
Time DC is unavalloble f or e:ner ency service because of required tests
~
f
~.p 7 r
I !
Enciceiure ! - Pags 2 l' '
TAllt.E 2 Diesel Generator Sclieduled Downtice Record l*l a n t Hriac Calvert Cliffs' Calendar Year 19 3 Unit Ho, g_
l lloura of Downtimo I
Henson for Henctor shutdown Reactor not sleutdown Commenta DownLleio ggg - pgg-7 3gy-- p gy q)gg-pgg-yp yg-77 yp Scheduled I
12 15 72.25 46.5 47
{
Preventive Maintenance 15 13 19 60 72 66 I
Equipment Modificatilons 7
Bolts & Cap Screws Replaced j
5 6
47 Aux. Blower Fan i
k, I
t 5
2 2
2 Exciter replaced - diesels down at different times.
l l
8 f*
9 S
i Time DG is unovallol21e for emergency service 12ecause of required I
tests
_I i
l I
i - Pago 3 i
TAbt.t? 'l Dieuel Cenerator tinucheduled Downtime Recoral l'1 ant Hanau Calvert Cliffs t
calendar Year 1976-80 Unit No.
162 c
~
9 Connento - If any of the reported failurca would not have been a 1.ER Abstract th Downtime llours f 11 -
ddr emergt5cy cmdt tions, olaane explain here.
("d I"'
C " "[ [ CI Trouble-l'a r t e,De l - Repatr/
Refer to attached I.ERs or the failurca listed in Table 1.
js) Total ed LEM Abutrac llours shooting, Ivory.etc !cylaco l
1 N/A N/A N/A N/A LER abstract #2 update report; LER 79-17.
l 2
N/A N/A N/A N/A LER abstract #17 covers same report; LER 79-17 3
3 1
1 1
4 4.5 0
0 4.5 5
6 2.5 1
2.5 Diesel #12 start time exceed T.S.
6
.25 0
0 0
Operator error caused a rtart failure alarm.
7 5
0 0
5 8
7.25 0
0 7.25 9
1.5 0
1 5
10 3
1*
0 2
11 2.5 1.5 0
1 12 0
0 0
0 Diesels ran continuous while repair of air start system pipe hangers.
13 47 1
0 46 Reactor Shutdown 14 4.5 1.5 1
2 15 0
l 0
0 0
Diesels ran continuous while repair of air start system pipe hangers.
16 5.5 2.5 1
2 17 206 2
144 60 Reactor Shutdown 18 0.25 0.25 0
0 19 10
.5 2
7.5 20 3
.5 1
1.5 21 5
1.5 1
2.5 22 N/A N/A N/A N/A See LER abstract #27; same LER 77-91.
23 0
0 0
0 Diesel started, but water supply valve failed to open automatically and was manually operated. Condition Repaired.
24 0.25
.25 0
0 l
Diesel tripped on overspeed, operated satisfactorily when rested.
g Cause not determined.
l 25 0
0 0
0 Diesel started, but output breaker failed to automatically close, l
so was closed manually. Subsequent tests worked correctly. Cause of failure not determined.
3
.i
~ $.
I a
i Enclotiure 1 - Page 3 TAbl.t? "1
. Dieuel 1:enerat or Unucheduled Downs s mo liecord l'1 a n t Hanu Calvert Cliffs
- l Calendar Year 19E-80 Unic Ho.
1&2 l
1.ER Abstract thl Connontu - U any of the reported failurcu would not have been a Downtime llours f 11 r e q M m dttiosia, p! m e c @ sn he m (Refer tu attet ed 1.Elt Abutract s) Total Trouble-l' art a Del - Repair /
Refer to attached I.ERu or the failurce listed in Table 1.
llours shooting, tvery,etc teplace 26 1
1 0
0 Diesel failed to start, but was successfully started within the hour. No cause found.
l 28 2
0 0
2 29 8
1 0
7 30 0
0 0
0 Small fire on D/G during test run.
Diesel stopped, fire extinguished.
31 48 2
0 0
Isolation valve to the Jachet Coolant pressure switches was found shut. Valve opened and diesel returned to service.
32 2
0 1
1 33 7
0 1
6 34 1
0 0
1 l
35 3
1 0
2 36 4
2.5 1
.5
.37 3
1 1
1 l
38 3.5 0
0 0
Operator noticed service water relieve valve lifting. Valve line-up found in error.
39 4
1 0
3 40 4
1 0
3 l
NO LER IN ABSTRMT 41 3
2 0
1 42 1.25
.75 0
.5 43 2.5 2.5 0
0 44 5.5 2.5 0
3 45 13.75 3.5 2.25 8
46 5
0 0
5 47 5
.5 1
3.5 48 10.5 2.5 1
7 k
49 3.5 3.0 0
.5 j
50 2
2 0
0 D/G #21 tripped after running 29 min. for routine testing. Would p
not occur during emergency situations because the D/G would not be I
in parallel with another generator.
l O
e
. - Pagu 3 Taut.E 3 Dieuel Generat or tlnucheiluleil Downt aine Itecos.1 l'I n n t Hainu Calvert Cliffs,'
Colendar Year 193-80 Unit No.
162
'~ Comentu - Tf any of the reported failurcu would not i..-ve been a 1.ER Abstract th D wntime llours I""I"# """*I fall ra undur emergency conditions, please explain here.
ed 1.En Abutracts) Total Trouble-l'a r t a, De l - Repair /
Refer to attached I.ERu or the failures listed in Table 1.
tiours shooting tvery.etc teplaco 51 15.5 4.5 1
10 52 3.5
.5 1
2 i
53 15 2.5 0
0 The engine oil pressure switch was erroneously left isolat'ed after a' PM calibration.
54 24 0
0 0
Low speed relay was energized, preventing start. When de-energized D/G started normally.
55 0
0 0
0 Diesels ran continuous while repair of air start system pipe hangers.
56 2
0 1
1 57 3.5 3.5 0
0 58 17 2
1 14 59 44.5 1.5 2
41 0
60 0
0 0
0 Diesels started and ran while non-seismically qualified sections of the air start system could be isolated.
61 3
1 1
1 J
k' f
'e I
I as.
(
+
9
=_
s...
+
-,. v 8
Encloture ! - Pags 2 i
TAul.E 2 Diemal Censrator Schsduled Downtime Record Plent Hrise Calvert Cliffs' Calandar Year 19J0 Unit No.
162 Ilours of Downtinue Henson for Henctor shutdown Reactor not shutdown Comments bountIn.c ggy~ 3gy~ y g q3gy-y g-gg yg qgg-g Scheduled Maintenance 15 8
24 71.25 86.75 45.5 i
Preventive Maintenance 17 14 13 69 75 77 i
l Equipment Modification 4
4 4
Pressure Switches remounted - diesels down at different times.
i
- s i
l i
i t'
I.
9 e
I Time DC is unavalloble f or e:nergency service because of required tests f
~
.l I
Enclouure 1.- Page 4 e.
TAllII 4 Unmite Emorgency Diesel Genurator and Plant flamo Calvert Cl_if fs
. l 9
Auxiliary Equipmunt Hodi ficat tun itecord Unit No.
1 &L Equipment or Date of Roanon for Ifodification and i
.I I
procedura Hod.
Dentred Improvement Doucription of Hodification modilled 8
A caution has been added to thd D/G' operhting D/G Operating'In-5/15/79 Aux. blower fa'iled due to thermal struction growth and subsequent contact instructions to prevent rec'urr'ence; blower re-f l
between lobes and blower housing.
turned to vendor for rebuilding.
i Standing Order 80-1 2/8/81 Change, so no ESFAS Modules were Standing Order 80-1 was issued requirinh
- operators tripped prior to stopping D/G toverifynoESFASModuleswe,retrihped.
after a false SIAS.
l j'
i Semiannual Flush of 11/13/79 To prevent Governor sticking due Procedures adopted per manufacturer's recom-l the Governor Assy.
to sludge.
mendations.
}
l Air Start System 1/24/79 Design error; air start system Hangers modified to meet seismic requirements.
Pipe Hangers hangers were not seismic.
I Injector Inspectipn 1/20/79 Injectors clogged and out of ad-Injector inspection frequency has been changed j
justment, not allowing D/G to from every 18 months to semiannually.
j achieve full load.
t Air Start System 9/14/79 Design error; air start system Hangersmodifiedtomeetseismicrqquirements.,
Pipe Hangers piping hangers were not seismic.
'l i
i Exciter Potential 7/24/79 T-54 was found to have a grounded Transformer was replaced with a current, im '
l Transformer T-54 primary winding which smoked on proved design transformer by same manufacturer.
I operation of the D/G.
Additional transformers abe being procured to replace the same transformer in D/G nos. 12 and 21.
Preventive Main-6/21/79 Procedure was deficient in that PM procedure has been changed to include the tenance Calibration there was no step to ensure the engine oil. pressure switch as a PM that places on Oil Pressure instrument was returned to service the diesel out of service.' In addition, all Switch (0-PS-4795) with the isolation valves in the instrument, electrical, and mechanical PM's, proper lineup.
functional test procedures, and maintenance pro-cedures have been reviewed for, and changes made to include, steps to return equipment to service following the maintenance action.
I O
i Enclosure 1.- Pags 4 y,. J TAtti.E 4 Onatte Emmrgency Diesel Cenurator and Plant liaine Calver t Cliffs
' '{
Auxiliary Eqnipmunt Hodi ficat tuu itecord Uott tio,
1 x9 I ;.
Equipment or Date of Roanon for }fodification and l;
procedure Hod.
Dentred improvement Doucription of Hoi!1fication modtfIed l-Instrument Tubing 7/30/80 Tubing r.ot seismically qualifi~ed.
The original installation has b'een Inodif ed tp l
Connecting the seismic requirements.
f, Emergency D/G Air Start Headers to Pressure Switches i;
l Current On Exhaust 9/19/77 Nameplate data indicated that the Revised full load current on diesel 11, 12, 21 I
Fans exhaust fan full current was 17.4 exhaust fans to 17.4 amps. Revised overicad I
amp, and not 12.6 amps.
heaters accordingly.
l Elapsed Time Indi-2/16/79 To acquire the most accurate times Added elapsed time indicator cir~cuits for start cator on diesel generator starts to to rated speed and start to rated voltage'. Thus, eliminate any, and all, doubts of an operator would plug in t(ming unit prior to operator error on start times, start. Timing unit would be triggered by start circuit and stopped.by speed relay and voltage I
relay.
Vent Fan and Start 8/8/79 It was possible to start diesel on Added 1 agastat model 7022P.E. (20-200 sec.), or Circuit undervoltage signal and load bus equivalent, toventfanstartcircu[ttoprovide without fan starting, depending on positive start of fan.
d l
lineup.
i.
Bolts and Cap Screws 11/2/79 Grade 2 bolts are breaking. Metal Replaced Grade 2 bolts and capiscrews with Grade Lab. reports on failed bolts sug-5.
Replacement was for air inlet and discharge gest that we use Grade 5 b'olts, of blower and turbocharger', air box covers, and s
other non-internal accessory parts.
J Compressor Pressure 5/5/80 Mounting caused excessive vibration Our switches, 0-PS-4829, 4829A, 4833, 4833A, 4837, Switches when compressor running which re-and 4837A, remounted on the wall adjacent to the quired frequent recalibration.
old air compressor mounting location on compressor Also, move sensing line upstream of skid. Also, sensing line moved upstream of re-receiver outlet check valve so that.
ceiver outlet check valve.
air receivers do not bleed down with-out being made up.
I I
U
ATTACRMENT 2 i
CALVERT CLIFFS UNIT 2 DOCKET NUMLER 50-318 LER ABSTRACT NUMBER FROM TABLE 3 LER NUMBERS 41 76-02 42 76-18 43 77-20 44 77-23 45 77-28 46 77-47 47 77-54 48 77-80 49 77-91 50 78-02 51 78-15 52 78-25 53 79-23 54 79-17 55 79-39 56 79-40 57 80-03 58 80-11 59 80-16 60 80-35 61 80-55 Y