ML17296A362
| ML17296A362 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 04/27/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| References | |
| NUDOCS 7905090115 | |
| Download: ML17296A362 (6) | |
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UNITED STAT ES NUCLEAR REGULATORY COMMISSION REGION V SUITE 202, WALNUT CREEK PLA2A 1990 N. CALIFORNIA BOULEVARD WALNUT CRFEK, CALIFORNIA 94596 APril 27, 1979 Docket Nos.
50-8 Y -529 50-530 Arizona Public Service Company P. 0.
Box 21666 Phoenix, 'Arizona 83038 Attention:
Nr.
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 Notification 79-67AH.
Sincerely,
+R.
H.
Engelken'irector.
Enclosure:
PNO-79-67AH cc w/enclosure:
F.
W. Hartley, APS
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IMMEDIATE PRELIMINARY NOTIFTCATION April 27 1979 PRELIMINARY NOTIFICATION OP EVENT OR UMOSUAI OCCURRENCE <<" PNO-79-67AH This relimina notification constitutes summar information of an event summa of information as of 7:OG a.m.
on A ril'27 1979m Z~etilit:
Tbtee Mile Xelend Unit 2 Middletown, Pennsylvania (DN 50-320)
~8nb'ect:
MUCLEAE 1MCTDEMT AT TlUGE MLLE XBLAED Plant Status The average coolant temperature is being maintained at 225 degrees P by admitting steam to the main condenser through the turbine bypass valves.
The highest incore temperature reading is 310 degrees F.
I Pressurizer level transmitter LT"3 became erratic over the period of 12:30 " 1:30 a.m.
on April 27, but is now tracking again.
Calibration of the Heise
- Gauge, to be used as a back-up pressurizer level measure-ment has been completed.
Environmental Status No Aerial Measuring System (AHS) Surveys were made on April 26, 1979.
Iodine concentration at Unit 2 ventilation stack {analyzed by NRC Mobile Laboratory).
D~ete Time 4/26 (0016) - 4/26 (0357) 4/26 {0400) " 4/26 (0800) 4/26 (0805) - 4/26 (1220) 4/26 (1220) - 4/26 (1558) 4/26 (1606)
<< 4/26 (1913) 4/26 (1913) 4/27 {0006)
Offsite Measurements Radiation Levels Activit (uCi/cc) 1.2 x 10 8 1.1 x 10 8 1-1 x 10 9
7.4 x-10 8
).4x 108 1.4 K 10 4
e
>>e 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 to five miles north and south of the site.
CONTINUED IMMEDIATE PRELIMINARY HOTEL'ICATEON
J
Continued Page 2
April 27 1979 PNO-79-67AH Dose rates (47 locations as measured by'BC thprmoluminescent 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.
HRC Environmental Sa les (Sam les taken offsite within 3 miles of site-anal zed in mobile laborato
)
aiz'aily air zain water Date of Sam le 4/26"27 4/25"26 4/26 Number of Samales
'7 1
k
')
Results Less than MDA+
Xess than ADA Less than lSA EPA reported orally that the air samples collected on 4/24 - 4/25 from the 31 sampling stations were all less than MDA for I-131.
All EPA samples were taken at distances greater than 2 miles from the site.
>MDA - minimum detectable activity.
The Commonwealth of Pennsylvania has been informed of these results.
Contact:
- RCPaulus, IE 27246 DThornpson, XE x27246 Distribution:
Transmitted H St ~P:
Chairman Hendrie Commissioner Rradford '. J. Chilk, SECY Commissioner I<ennedy Commissioner Aheqrne
~
C.
C. Kammezer, CA Commissioner Gilinsky (For Dist ibutioa)
Transmitted:
HRBB ~S P. Bldg ~)(l 2 J.
G. Davis, lg L. V. Gossick, EDO H. R. Denton, NRR Region X
H. L. Ornstein, EDO R.
C. DeYoung, NRR Region XX i Z J. Z. Pouchard, PA R. J. Mattson, NRR Region IXX N. M. Hailer, HPA V. Stello, NRR Region XU R.
G. Ryan, OSP R, S.
Boydk RRR Region V
H. K. Shapar, ELD SS Bldg N~> +
~
(RATE)
V. J. Dircks, NMSS J. J.
'Provide copy to STATE)
White House Situation Room
& m xaam -FDAA (provide copies to the Administrator and the Operations center)
EPA ~~<~~~~)~>
&P.uOE/EOC kkr. Xkkkkf PEHA kn BRP (State of PA) ~8)dfk ~
DCPA
<~. y~)HE@
Handcar~
(PAA) f)t'~C. Abraham, PA (Middletown Information Center)
IMMEDXATE PRELIMINARY NOTIFICATION 1
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