ML19308D245

RO-77-12:on 770210,during RCS Cleanup After Sodium Hydroxide Injection,Boron Concentration Diluted by 230 Parts/Million. Caused by Personnel Error in Loading Mixed Bed Vice Cation to Demineralizer.Operators Cautioned & Drums Marked

ML19308D245
Person / Time
Site:	Crystal River
Issue date:	02/16/1977
From:	Stewart W FLORIDA POWER CORP.
To:
Shared Package
ML19308D235	List: ML19308D234 ML19308D245
References
NUDOCS 8002270700
Download: ML19308D245 (1)

Text

._- -.

(b LICENSEE EVENT REPOHT

-

CONTROL 8 LOCK:l l (p,) '

l l l l 8

l [PLEASE PRINT ALL REQUIRED INFORMATION)

NAME LCENSE NUMBER VPE TV E I F1 tl cl RI e131 7 89 14 10101-l 0101010l 01 -IO I 0 l I 4 l 111.11 l 1l l 0l 11 15 25 26 30 31 32 CATEGORY T R DOCKET NUMBER EVENT OATE REPORT OATE h CLNT l

• l

• l 7 8 57

[ P_) (_I. l l0 l5 l0 l-l 0 l 3 l 0l 2l l0 l2 l1 l 0 l 7 l 7 l l0 l2 11 l6l7l7l 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION Q j During cleanup of Reactor Coolant System after injection of NaOH, Boron concentration l 7 89 80 SE l was diluted by 23C ppm. Mixed bed demin. placed in service instead of cation bed as l 7 89 80 EE l intended. Redundant systems were available. Second inadvertent deboration. First l 7 89 80

@ l from this cause. ! fixed bed immediately by-passed. Added boric acid immediately. Be-l 7 89 80 DE lcause of the Reactor Coolant cleanup operation in progress, (Cont'd-Additional Factorsl 7 89 80 paue (77-12)

E CODE COMPONENT CODE R MAP R VIOLATON EE l Cl Cl W 7 89 10 l D l E l Ml IlN l X l 12 lNl l Bl 0l 1] 5l [Nj ,.

11 17 43 44 47 48_

CAUSE DESCF11PTION DE l Personnel erred in loading mixed bed vice cation to demin. Operators cautioned to l 7 89 80 l carefully check resins before introduction to systems. Also, all drums clearly l 89 80 l marked to preclude recurrence.

l SA S  % POWER OTHER STATUS O SCOVERY 1

7 8 9 y l0l0l0l l Mode 5 l ]45 OrSCOVERY OESCR6PTON l Result of special 30 min. analysis l 10 12 13 44 48 80 REL E SED OF EL SE AMOUNT OF ACTMTV

$ (_j Ul N/A l .l LOCATON OF RELEASE l

7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBE R TYPE DESCR* TON DE l l l l Ul N/A l 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER OESCRIPTON BE I I l l l N/A l 7 89 11 12 80 OFFSITE CONSEQUENCES gg l N/A l

7 89 80 LOSS OR OAMAGE TO FACluTY D] U TYPE l

DESCRIPTON N/A 8 0 02 270 20C l 7 89 10 80 PUBLICITY E1E l N/A l 89

. 80 ADDITIONAL FACTORS (Event Description Continued) special Boron analyses were being per-l formed at intervals o f approximately thirty (30) minutes to identifv Boron changes, l 7

8 9 and during this time period, inverse count rate ratios were continally monitored to 80 assure safe conditions. Shutdown margin was maintained at least 19 l rho hichose worth con trol rod withdrawn. - Actual shutdown marcin 8.51% (hichest AK/K, uorth assuming rod l<

7 8 9 inserted) was greater than 11% AK/K. 80 NAME: W. P. Stewart ( dg' . - PHONE: (813) 866-4159

..