ML17296A357
| ML17296A357 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 04/30/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| References | |
| NUDOCS 7905070025 | |
| Download: ML17296A357 (14) | |
Text
UNITEO STATES NUCLEAR REGULATORY COMMISSION REGION V SUITE 202 ~ WALNUTCREEK PLAZA 1990 N. CALIFORNIA BOULEVARD WALNUTCREEK, CALIFORNIA 94596 April 30, 1979 Docket Nos.
50-528 50-529 50-530 Arizona Public Service Company P. 0.
Box 21666
- Phoenix, Arizona 83038 Attention:
Hr.
E.
E.
Van Brunt, Jr; Vice President, Construction Projects Gentlemen:
In accordance with our letter dated April 1, 1979 transmitting Bulletin 79-05, we are enclosing Preliminary Notifications 79-67AI, 79-67AJ and
'9-67AK.
Sincerely, E/gel ke ~j,~
birector
Enclosures:
PN0-79-67AI, 79-67',
79-67AK cc w/enclosure:
F. ll. Hartley, APS
IMMEDXATE.
PRELIMINARY NOTIFICATION April 28;"- 1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE " PNO-79-67AX e
I
~ ~
~ I ~ 4
'This reliminar 'notification constitutes summa information of an event of safet
- o'r ublic interest si uificance The information resented is a
suama af infoxmation as af 7:00 a.m.
an A ril 28 1979
~
N~ecilit:
Tbree Nile inland Unit I Middletown, Pennsylvania (DN-50-320)
~Snb'ect:
NUCIEAE INCIDENT AT THREE HIDE ISIAND
~
e Plant Status
\\
The average coolant temperature is 179 degrees F~
Steam is being admitted
, to the-main condenser through the turbine byp'ass valves from the A Steam Generator.~
The highest incore temperature reading is 319 degrees F,
Pressurizer level It-3 failed at 9:15 a.m.
on April 27.
Pressurizex level is naw being monitored by the back"up Heise Gauge and a mass balance calculation.
Because of the degradation af the level'instrumentation natural circulation was initiated ahead of schedule.
Reactor Coolant Pump'A was shut down at. 2-.08 p.m.
on April 27 and natural circulatian was established on both Steam Generators.
1 e
e e Increasing levels of radioactivity were noted shortly after the startof steaming the B Steam Generator.
Offsite monitoring was conducted and the'evels returned ta natural background levels within three to four hours.
Steaming of the B Steam Generator was stapped at 1:10 a.m., April 28 due to an indicated increase in the level of ventilation stack activity.
This indication was later found to be in error.
Natural circulation is continu-
'ing on the A Steam Generator-.
~
e
~
-j
~-
h f
Environmental Status
'=
System (AMS) surveys weke conducted fram late mo on April 27.
Xe-133 activity was detected up to Maximum readings vere 0.2 mR/hr.
No iodine was Aerial Measuring until 6:00 p.m.
downwind (SSE).
aerial surveys, Offsite Measuremeuts Radiation Ievels r
ming 10 miles'etected during, Offsite radiation levels indentified by NRC survey teams were consistent with the AMS Survey.
Readings from background to 0.35 mR/hr ware present in SSE direction fram the site.
~
Q J e V
1
~
~l +"e e
e-aP' Dose rates (47 locations as measured by NRC thermoluminescent dosimeters
{TLDs) for the past 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period continue to be consistent with natural background levels.
CONTINUED IMMEDIATE PRET1MTNARY NOTIFICATION h
pN IW bee
gl l ~
Codtinued Page 2
Y Yvt
~ vvttvvl a ee
~
t v ~t April 28, 197'9 PN0<<79"67AX air 4/27 daily air
4/26-27 Number of Samales 17 1
Results Less than M)A Less than. MDA NRC Environmental Sa les (Sa Les taken offsite within 3 milds of site anal zed in mobile laborator 5
Y I
(*
- ~I Number-of
~gam les Results Less than i+A "1F 3.4 x 10 microcuries per cubic centimeter (0.34 picocuries'er cubic meter)
X-131 I,ess than M)A*,
5 1
~
air 4/25-26 air
'/25"26 4
'discharge 4/21-26 7
t.~ 44t V' tt%a vl I
~ ~,
t P'
All EPA samples were taken at. distances greater than 2 miles from th'e site 1
+MDA - minimum detectable activity.
, EPA provided spike milk samples on 4/27/79 for interlab comparison of analytical methods by each agency performing milk analysis.
The Commonwealth of Pennslyvania has been in'formed o% these results.
~'
~ ~
4' Ya I
54
. 444
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tt 4
Contact:
If' ~
Distribution,:
Transmitted H St /Se~
, Chairman. Hentdrie Commissioner Bradfnr d Commissioner Kennedy Commissioner Ahearne Commissioner Gilins Transmitted:
MNBB
.. g P. Bldg
~.
u
/Jg lt L. V.'ossick, EDO H. R. Denton, NRR H. I. Ornstein, EDO R.
C. DeYoung, NRR J. J. Fouchard,,
~
R. Z. Hattson, NRR H. Holler, aaPA '. Stello, NRR R.
G.Y Ryan, OSP
=
R.
S. Boy/
NRP H. Z. Shaper, EDD
'S Bldg 55(rI.
M. J. Dircks, R'1SS S. Levine, RES IE (TM)'ite (Provide copy to STATE)
, C. Abrahamp PA
{Hiddletown << TMI-Inform Shits Roose Sitnation Room.
PDAA (Protide copies to the Administrator EPA DOE/EOC PEHA BRP (State or PA)
XHMEDlATE lBRELTHINARY NOTIFICATION S. J. Chilkp SECT C.'.
- Kammerer, CA (For Distribution)
J.
G. Davis, XE Region I Regi on" XA Region III Region IV a SU; Re ion 55' (HAlt)
J. J.
Cummings,;OIA ation Center)
'I and the Operations Center) t t
Mt 4
-4 YIV I
4 ~
Y.l 5'I 4
IMMEDIATE PRELIMINARY NOTXPICA'Jl<)N April 29, 19/9'RJ;JuTHTNARY JTOTIFICATION OF EMJJ'l'R UN!JHUAJ. 0<:CJJRBEHCE -- PNO-79-67AZ
~tht.".
rrtl'tminoty nottttootton ouuutilul r.::::ummuty infotnotion of on ovuot nf safr.ty or public inter'"L eci nific.oner -
Thc information ccesezted i" a
.-.marry of infotmatiocc av-or'c00 a.m.
nn April 29, 19/9
~
F'acj.lit@:
Three }Jile I lane< lJniL 2 Middle L'vwn, Pe:nnsyl vania (DN 50-320)
Subject:
NUCLEAR JJJ<:i JJJ:.JJ'Jl'JJREE MIXZ ISLAND Plant Status Vhc average coolant tc mpc:raLccrc. is 175 rlrgrccs F.
Steam ia bc=ifcJJ admiLLc:d to the main condeclsor Lhrocq<h the t>>rhine'ypass valves J.rom Lhc. h HLc.ccm-Ceneratoc.'.
Thc. bi J<hc:sL inc-nrr. t.cmpcrature readinj i'2<3 clc'.Jure..c:s Tr Natural circcclaLinn is c:ontinuing on the A Ste..am
<te.nc..raLor.
EllVIROclmc.icLa J H t.a Los Two Aerial Heavccri>>g HysLe.m (AJJS) Surveys vere made os AJ3r.-
J 'y8, 1979.
No,.radioactivity above: naL>>ral hackpround was detected Iodine concLnt.raLio>> aL
<Jni (;
7, ventilation stack (Analyze..cl by JIB<i Hohilc Labol'atory).
Date/Time 4/27 (0011) - 4/28
(<393$ )
4/28
(<304') - 4/28 (QQ3Q) 4/2JJ (0832) - 4/28 (g(25)
Ac:rivi'uCi/rc) 1.11 x 10-8 3.35 x
JO 9.51 x
'Jg OJ,"Jinni Le: Hc..asicrc ments Racliatinn Levels 0ffsitc radiation levels id'>LiJ'Jc'.cJ hy NR<. s>>rvcy teams continue to bo consistent with natccral hac:Jcp'rc>>encl 1c'vela (0
~ 02 mR/hr
<<>axic<c'ceja)
J'bc..c;c.
results were vbLaine.cl frnm rncctinc daily surveys ge.rlvrI>>ed dow>>wi>>d on Lhc-eaat and wc..vi vide:.": of Lhc; S>>scl>>rbanna Reer at, di~taccc:e'cp Lv fivr. mile..
north and soutlc vf Lhc..it,r.
JJoccc:
raLc..s (47 Jnrations) as measured by HRC tJcc..rinolc>>nine.sc:c..>>L clqsimctcrs (TJ.J3s) fnr thc past 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period cv>>LJ>>ccee Lo hvt c.nnsiccl.cnt with natural harkgrnund levels.
<!DJJTL JJUEJ3 IJ'JJ'JEJ3lATE VRI'.l H l HAJ<Y N<3'J'JF TCATT<35'
V 1
Centirldr d Page r
Apri I 29, 7979 I'Nr,) 79-fi74.1 NRt. Rrlvirrrrrmc nt<< I Srrmlrlcs (Samples taken oEEsiLe: wi Lhin 3 mi I c'5 of si'tc z)
Numhr:r of
~ibJl
) I r~rr Rcsrrlts 4J28 9
4/28-.29 1
FPA Environmental Sam ler) (Arr<<I rerI <<r. Rrerrt:c Laboretory)
Less than HDA~
Less than MBA No Sample Reauiirr Rr IrorLr.rI.
~
~
+MDA - minimum deter'.table.
<<r:Livi Ly.
4 The Commonwealth rrf Irenrr:;ylv<<ni<<has been informed oE tlr~se. rr:saILr:
Contact'.
Currrrrrirr.'iorrr r IIr)dford Crrmmi.:=ioner Ahca me Distribution:
Tramcar'r'rittr d
-I'hairmrrn Hendrie Commissioner Kennedy Commissioner Cilinaky Transmrtead:
)INBB g/gE@
L. U. Goasick, I,"DO H. I..
Qr.'nr; tr irr, I',f)D J. J.
Fou,r'lxarrl, ph N.
M. Hallr r, I)f'A R.
G. Ryan, osi'.
K. Shaper, EIJ)
S. J.
Chalk>>
SF',
C ~
KaNlAea!eL', I'A-(For Distilbutio>>)
J.
G. Davi.., Il RuI;iou Rr girrr'r
[ I g'rI~
kr I i.orr I I1 g~r Rr rior'r, lV Re@i orr V
('rrAl'L)
J. J.
CUrrmrings, OIA R.
HirrrrIIur., Sl)
IMMEDIATE
'RHTIMINARY NOTIFICATION P. IIIdgI/ 83'+
II. R. Dcnton, NRR R-C, DcYoung, NRR R. J, Mattson, ERR V. St'clio, NRR R,
S,
~. J, Dixcksr NMSS S, Levine, RES IP. ('I'HI) Si Lr:
{Provide copy to STATE)
C. Ahr<<fr<<m, PA (Middletaun. - 'I'IiI I nfrrrm<< t.irrrI Ccntcr)
VihiLr Ho>>,".c Situation Room I:DM (Provide copies to the ArIrrrini.;Lr<<Lrrr<<nrI thc Operations Center)
Epn I)OP./I'.OI.
~ ~A
~ ~
XMMEDXAYE PRELIMINARY NOTIFICATION April 30, 1979 PRELIMINARY NgTIFICATION OP EVENT OR UNUSUAl OCCURRENCE -- PNO-79-67AM This relimina notification constitutes surmuary information of an event of safet or ublic interest si nificance.
The infoanation resented. is a summar of information as of 7:00 a.m.
on A ril 30 1979.
T~Facilit:
Three Mile lslend Unit 2 Middletown, Pennsylvania (DN 50-320)
~Bnb'ect:
HUCLEAE IHCIDEHT AT THREE MILE IRLAHD Plant Status'he average coolant temperature is being maintained at 175 degrees Z by natural circulat,ion.
Steam is being admitted to the main condenser through the turbine bypass valves'rom the A Steam Generator.
The highest. incore temperature reading is 323 degrees F.
Environmental Status One Aerial Measuring System (AMS) Survey was made on April 29, 1979.
No radioactivity above natural background was detected.
.l, Iodine concentration at Unit 2 vents.lytion stack for the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period ending at 12:25 a.m. April 29 was 8.21 x 10 microcuries per cubic centimeter (Analyzed by NRC Mobile Laboratory).
An NRC survey of the -site perimeter was conducted on April 29.
Radiation levels were in the range of 0.02 - 0.03 mR/hr.
Offsite Measurements Radiation Levels Offsite radiation levels identified by NRC survey teams continue to be consistent with natural background levels (0.02 mR/hr maximum).
These results were obtained from routine daily surveys performed downwind on the east and west sides of the Susquehanna River at distances up t.o five miles north and south of the site.
Dose rates (47 locations) as measured by NRC theraioluminescent dosimeters (TLDs) for the past 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period continue to be consistent with natural background levels.
CONTIA%EED IMMEDXATE PRELIMINARY NOTIPICAT'ION
4, ot'>>
I
~ ~ ~
Continued Page 2
April 30, 1979.
'NO-79-67AK NRC Environmental Sam les Sam les taken offsite within 3 miles of site anal zed in mobile laborator
)
Nuiober of
~gem lee Results air daily air milk discharge water vegetation
'EPA Environmental Sa 4/29 4/28"29 4/29 4
1 "3
34l Less than MDA+
Less t.han.
4/29 Less than4MDA 4/29 2.7 x 10 microcuries/
, square meter
(
No Sample Results Reported.
The Commonwealth of Pennsylvania has been informed of these results,
- "HDA - minimum detectable activity.
Contact:
Transmitted H St lb~<~
Chairman Hendrie Commissioner Bradford Commissioner Kennedy
~ Commissioner Ahearne Commissioner Gilinsky Transmitted:
EENBB gtLe)LS P.. Bldg f~
X. V. Gossick, EDO H. R. Denton, NRR H. L. Ornstein, EDO R.
C. DeYoung, NRR J. J. Pouchard, PA R. J. Hattson, NRR N. Ei. Hailer, HPA V. Stello, NRR R.
G-Ryan, OSP
'R. S. Boyd, NRR H. K. Sbapar, ELD
~
SS Bldg S. J. Chilk, SECY C.
C-Kammerer, CA (For Distribution)
J-G. Davis, IE Region I Region II~I.jlo Region III~jl 0 Region Ijj~
Region V~~
(HAIL)
J. J.
- Cummings, OIA R. Minogue, SD Cent.er)
IHMEDIATE PRELIkiINAR'Z NOTIFICATION
~hJL.QO M. J. Direke, NtESS S. Levine, RES IE (THI) Site (Provide copy to STATE)
C. Abraham, PA
'Hiddletown - THI-Information Center}
Kite House Situation Room FDAA (Provide copies to the Administrator and the Operations RDA DORjjROC PENA BRP (State of PA)
DCPA HEW Handcarry (PAA)
E r
L
'I H
l P