ML18227A447
| ML18227A447 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 10/31/1975 |
| From: | Schmidt A Florida Power & Light Co |
| To: | Moseley N NRC/RGN-II |
| References | |
| Download: ML18227A447 (7) | |
Text
NRC OI IIEUTION FOR PART EO OOCKE7(TERIAL (TEMPORARY FORM}
0 N736 1
FILE XNCXDEÃZ REPOT T FIL FROM: Flordia Power If Light Co.
Miami, Flordia A D~chmid.
TO:
Mr. Norman M
TWX RPT
, OTHER ORIG
~
\\
None J 5 CC OTHER 40 XXX SENT AEC PDR XXX
-SENT LOCALPDR DATE OF DOC DATE R EC'D LTR CLASS UNCLASS PROPINFO XXX INPUT NO CYS REC'D 40 DOCKET.NO:
50-251 DESCRIPTION:
Abnormal Occurrence 8 75-10, on 10-21-75; Concerning an Unplanned Relaease of Radioactive Liquid.o
~
~
~
~
~
~
~
(40 Copies Refeived)
ENCLOSURES:
PLANT NAME:
Rurkey Point 8 4 FOR ACTION/INFORMATION SAB 11-6-75 BUTLER (L}
W/ Copies CLARK (L)
W/ Cooies PARR (L)
Vrt/ Copies KNIEL(L)
,W/ Cof)ies SCH(VE NCE R
( L)
W/ Copies STOLZ (L)
W/ Cooies VASSALLO (L)
Vrf/ Copies PURPLE (L)
FW/ Cooies ZIEMANN(L)
W/ Copies DICKER (E}
W/ Cooies KNIGI-ITQN (E)
W/ Copies YOUNGBLOOD (E)
W/ Copies REGAN (E)
W/ Copies
~LEAR (L)
SP E LS A.CKNO<LKDGKD W/ Copies PI,*'c.;gONOT REMOVE INTERNALDISTRIBUTION
,BEG FfLI.
TECH BEVIEIV DISCI.I ROE DE R OGC, BOOMi P-506A
~IACCARY GOSSICI(/STAFF KNIGHT
~CASE PAWLICKI GIAiMBUSSO SHAO BOYD
'"'>STE LLO MOOR E (L)
""'~HOUSTON DEYOUNG (L)
""'~NQVAK SKQVI-IOLT(L)
ROSS GOLLER (L) (Ltr)
~ IPPOLITO P. COLLINS
/TED ESCO Drf'ISE J.
COLLXNS Qf=G QPA LAIN AS WFII E a r<Fr.-ION (2)
BENABOYA
~.>'X~</" " '3)>>.VOLLMEB STEELE DFNTQN
'"'6 R IMIES GAMIVII LL KASTNFR BALLARD SPANGLER E NVIBO MULLEIN DICKf=A KNIGHTON YOUNGBLQOD BEGAN PBOJFCT LDB f.lARLESS LIC ASST B. DIGGS (L)
GEAR INi (L)
E. GOULBOrJRNE (L)
P. KREUTZER (E)
J. LEE (L)
M. RUSmROOZ (L)
S. REED(E)
M. SERVICE (L)
S. SHEPPARD (L) fvl. SLATER (E)
H. SiVIITH (L)
S. TEETS (L)
G. WILLIAMS(E)
V. WILSON (L)
~A. INGRAtIrl (L)
I~I
~DIEIME A/T IND
~
BRAITPAArhr SALTZMAN rXELTZ PLAiI~S MCDONALD CHAPiVIAN DUBE (Ltr)
E. COUPE PETE RSQN HARTFIELD (2)
~ KLFCKEB E IS E N I < UT
'irIGG I iMTOid
~ F. HXLLXA~IS "itMlUZ I QCAI PDR Miami, Flordia
~1 TIC (ABERNATIIY) (1)(2)(10)
~1 NSIC (BUCI.IANAN) 1 ASLQ 1
1 Neivton Andersor>
Mr-ACRS SE<"r,
'r'.O LZC.",SST
<~N SEND ONLY TEN DAY, fU.'~0i~TSR EXTERNAL DISTfllf3UTION iMATIONALLABS W. PENNINGTON, Rnr L.201 GT CONSULTANTS
'EVitiNABK/BLUME/AG BABIAN Ingram 1 PDR SAN/LA/NY 1 OBOOKHAVEN NAT LAB 1 G. ULI< I KSQN, 0 ANL 1 AGMED (AUTH GUSSMAN)
Am 8.127 GT
] J. D. RUNKLf.S, Rm E-201 GT
4 I
~
I
/
1
~
f II
'0
'T 4
II Jill
~'I I
I
y,~le 1~/
P.C. 8OX SI00 IhlAMI,fLORIDA88101
.ix>lilt~
I
~I ~(I(Pj~
FLORIDA POWER 5 LIGHT COiVIPANY October 31, 1975 1
(p Q
~,
lN Mr. Norman.C.
Moseley,, Director, Region II 8'ffice'of Inspection and Enforcement U.
S. Nuclear Regulatory Commission 230 Peachtree
- Street, N.W., Suite 818 Atl nta, Georg a 30303
+>~
4~
Dear Mr. Moseley:
50 l
c, ABNORMAL OCCURRENCE251-75-10 tP.
TURKEY POINT UNIT 4 DATE OF OCCURRENCE:
OCTOBER 21, 1975
- FORAGED, UNPLANNED RELEASE OF RADIOACTIVE LIQUI A.
CONDITIONS PRIOR TO OCCURRENCE
.no.>>>>
=
6 gaall ~<Io" The reactor was in steady state power operations 1004~1<Ih'ated power.
B..
DESCRIPTION OF OCCURRENCE
'he Waste Holdup Tank (WHT), which is shared by Units 3 and 4, was recently cleaned to remove sludge deposits.
The cleaning process produced a sludge-water mixture which was pumped to several 55-gallon drums for temporary storage.
Most of the sludge settled to. the bottom of the drums but some of it re-mained suspended in the water. It was planned to return the water from each drum to the WHT via the appropriate floor drain in the Unit 4 spent fuel cask wash area.
The remaining sludge was then to be treated as waste and eventually shipped off-site for disposal.
From about 4:00 AN to 7:00 AM on October 21, 1975, maintenance personnel pumped the water from twenty drums into the Unit 4
cask wash area floor drain which connects to a storm drain and discharges into an underground drywell south of the plant.
The inadvertent-use of the wrong floor drain resulted in an unplanned release of about 880 gallons of radioactive liquid to an underground area outside the plant's radiation controlled boundary.
C;
'DESIGNATION OF APPARENT CAUSE OF OCCURRENCE h
Personnel error resulted in the pumping of radioactive liquid into the wrong floor drain.
The floor drains in the Unit 4 spent fuel cask wash area are not labeled and there was un-certainty as to which drain connected to the WHT.
The personnel involved did not make a positive iden"ification of the WHT floor drain..
is'736 HE LP ING BUILD F LOB IDA
.--,e lt~ y
'c$~~
Mr. Norman C. Moseley October 31, 1975 Page Two D.
ANALYSIS OP OCCURRENCE Sludge and water samples were taken from some of the remaining full drums and subjected to, an isotopic activity analysis.
Dose rate measurements from the full drums were then compared with dose rate measurements from the twenty empty drums.
The isotopic activity and dose rate data were used to estimate the activity of the water which had been pumped to the storm drain.
Analytical results indicate that approximately 2.l Curies of primarily Cobalt-58 and Cobalt,-60 were released.
The drywell termination of the storm drain is located underground about 150 feet southeast of the-new Radwaste Building.
There are no potable water sources in this vicinity.
The water table beneath the drywell is a salt water stratum and" does not represent a source of potable water.
In addition, natural filtration by the soil can be expected to remove much of the insoluble activity before it, reaches the water table.
The isolated location of the drywell which is surrounded by. the closed canal system provides reasonable'assurance that the health'and safety of the public will not be -adversely affected by this occurrence.
E.
CORRECTIVE ACTION The fldor drains in the Unit 4 spent fuel cask wash area will be labeled to differentiate between the HHT and storm
- drains.
The floor drains in the Unit 3 spent fuel cask wash area. will.also be labeled.
Plant personnel will be instructed to-request guidance from knowledgeable personnel whenever. any uncertainty arises re-garding the handling of radioactive material.
A copy of this report will be routed to the personnel involved for their instruction.
Very truly yours, D. Schmidt Vice President Power Resources HAS/jar cc:
Jack R.
Newman, Esquire Director, Office of Inspection and Enforcement (40)
Director, Office of Management Information and Program Control (3)
0