05000267/LER-1981-036-01, /01T-0:on 810512,liquid Waste Discharge Exceeded Specified Limit for Tritium Concentration.Caused by Design Deficiency.Downstream of Valve HV 6212,150-200 Gallon Dead Leg Released Regardless of Dilution Flow Adequacy: Difference between revisions

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{{Adams
#REDIRECT [[05000267/LER-1981-036-01, Tritium Concentration in Unrestricted Area Following Release 460 Exceeded Limit. Caused by Inadequate Design of Liquid Radwaste Sys.Change Notice 1433 Issued]]
| number = ML20004D578
| issue date = 05/27/1981
| title = /01T-0:on 810512,liquid Waste Discharge Exceeded Specified Limit for Tritium Concentration.Caused by Design Deficiency.Downstream of Valve HV 6212,150-200 Gallon Dead Leg Released Regardless of Dilution Flow Adequacy
| author name = Gahm J
| author affiliation = PUBLIC SERVICE CO. OF COLORADO
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
| docket = 05000267
| license number =
| contact person =
| document report number = LER-81-036-01T, LER-81-36-1T, NUDOCS 8106090547
| package number = ML20004D553
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = /01T-0:on 810512,liquid Waste Discharge Exceeded Specified Limit for Tritium Concentration.Caused by Design Deficiency.Downstream of Valve HV 6212,150-200 Gallon Dead Leg Released Regardless of Dilution Flow Adequacy
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000267
| LER year = 1981
| LER number = 36
| LER revision = 1
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
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LICENSEE EVENT REPORT i
m CONTROL BLOCK: l l
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l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION#
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8 9 LICENSEE COOE 14 15 LICENSE NUMBER 2h 26 LICENSE TvPE Jo 57 6AT 68 CON'T 10111
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' 7 3
8 60 51 OoCKET NUMsER 85 69 EVENT OATE 74 75 REPORT DATE 80
[
EVENT DESCRIPTION AND PROO A8LE CONSEQUENCES h IOI21l n Thursday, May 14, 1981, at 1300 hours it was determined that the concentration l
O 2
ITTT'l I of tritium in an unrestricted area following liquid waste release number 460, which l
I 1o141Iwas made on May 12, 1981, exceeded the limit specified in LCO 4.8.2(a).
Reportable i
1 ITTT1 I per Fort St. Vrain Technical Specification AC 7.5.2(a)2.
No accompanying occurrence. l l 0 l6 g l Reportable occurrences RO 80-52, 80-67, and 81-013 deal with a related subject area.
l 10171 I l
l I
10681 l I
SOEE CO$E Susci$E COMPONENT CODE SUS DE S
E
:- 10191 l x l x i@ [.g j@ [.Lj@ lx lx lx lx lx lx l@ l Z i@ I Z i @
7 8
9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LER EVENT YE AR REPORT NO.
COOE TYPE N O.
O,aEg'ao l8 l1 l l-l l0 13 l6 l d
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, 21 22 23 24 26 27 28 29 30 31 32 i
K N AC C O P NT MET MoVRS 22 58 i POR B.
SU LI MANVP CTLRER lxl@lXl@
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so 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h j
l i t a l IThe' design of the Fort St. Vrain licuid waste discharte system is inadequate to avoid I f
I m Iproblems arising from a 150-200 gallon dead leg downstream of automatic valve HV 6212 I iii7j lwhich is released regardless of dilution flow adequacy.
Reliability of dilution flow I g l and possibility of relocating automatic valve closure capability upon inadequate I
ii i4i l dilution flow being investigated.
Final resolution to be submitted in a supplemental l 7
s 9 report.
so ST
% POWER OTHER STATUS SIS O RY DISCOVERY DESCRIPTlCN
+
11 151 LZ_j@ l01710 l@l N/A l
lCl@lLiquidwastetrackingsamoling l
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ACTIVITY CO TENT RELEASEO OP RELEASE AMOUNT OF ACTIVITY LOCATION OF RELE ASE I
l1 l 6 l l L l @ d@l4.6E-1 Curies of 3R l
l Liquid waste discharge piping to river l
[
PERSONNEL EXPOS ES I
NUMBER TYPE
 
==DESCRIPTION==
li 171 l o l 0 l 01@l Z l@l N/A l
f PERSONNE L INJU IES NUMBER
 
==DESCRIPTION==
li j a l l O l 0 l 0 l@l N/A l
7 8 9 11 12
' 80 LOSS OF OR OAMAGE To FACILITY /2 TYPE
 
==DESCRIPTION==
U 11191 l Z @l N/A l
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l l l l l l 1 l l ! ! l l :2 i
I NAME de PREPARER p
(303) 785-2224 PHONE:
- -.. - - - - -. - - - =..
}}
 
{{LER-Nav}}

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