ML19260D567

LER 80-002/03L-0:on 800107,during Region Constraint Device Installation,Found That Startup Channel Scram Protection Not Operable at Less That or Equal to 100,000 Counts/Second. Caused by Improper Setpoints.Setpoint Change Initiated

ML19260D567
Person / Time
Site:	Fort Saint Vrain
Issue date:	02/05/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19260D561	List: ML19260D560 ML19260D567
References
LER-80-002-03L, LER-80-2-3L, NUDOCS 8002110426
Download: ML19260D567 (1)

Text

NRC PORM 364- U. S. NUCLEAR REGULATORY COMMISSION (7 7

$ LICENSEE EVENT REPORT CONTROL BLOCK: (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 l l l l l lh 0 0 0 l- l0 l 0 @! 4 l 1 1l2 0 @l

('O [i]8 3] C I O 7

l F ] S l V J14 1 l@l LICENSEE CODE 15 0 l 0 l - 0l0 LICENSE NVVSER .6 ;e LICENSE TYPE JO Si A 7 bd l@

CON'T Oli l'RC;f" I L l@l 01510101012 l 6 l 7 )@l tid 0 l 1 l 017 l 8 l 0 l@l o AE80RT 74 75 l 210151810 C ATE do 7 6 64 61 OOCKET*WV8ER bd EVENT OATE EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h o 2 On January 7,1980, it was determined that the startuo channel scram protection at i o 3  ; less than or equal to 105 counts per second was not operable during region constraint 1 o 4 l device installation. This scram protection is required bv LCO 4.4.1. Table 4.4-1. I o 5 l except when the reactor mode switch is in "Run." Reportable per Technical Specifi- l 0 e Ication AC 7.5.2(b)2. No af fect on oublic health or safety. 1 0 7 l l ois I I 80 7 8 9 SYSTEM CAUSE CAU$E COYP. VALVE CODE CODE SL9 CODE COMPONENT COOE SUSCCOE SUSCCCE 7

O 2 8

I II Al@

3 to l Xl@ l Z l@ lZ Z lZ lZ lZ lZ lh l Zl@ W h 11 12 13 18 IW 20

,,, SEQUENTI AL OCCURRENCE REPORT R EVISION LER RO EVENT VEAR REPORT NO. CCOE TYPE NO.

@ fsgr o la l0 22 l_l 23 l 0 10 l 2 l 24 46

[g]

27 I 0l 31 28 29 ltl 30 l_l 31 l 0l J2

_ 21 Y K N Ah0N ON PLANT MET MOURS SB i FOR 8. SUPPLI E MANUFAC RER W@ l0 l0 0 0l Zl@ l Z 19 919l@

l33X l@J4Zl@ lZl@ 35 26 3# 40 lY l@

41 I42N l@ 43 A4 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o l Lack of startup channel scram protection was due to improper setpoints on the high l 3 i l voltage cut off from the wide range channels to the startup channels, tipon discoverv,

, 2 l a permanent setooint chance was initiated to ensure raq ui remen ts for startun channel- 1

, 3 l scram p'.otection.can be met.

l i 4 l l 7 s 9 80

$TA  % POWE R JTHER$TATUS 015 0 RY OlsCOVERY OPSCRIPTION i s W@ l0 l0 l1 l@lN/A l l A l@l Personnel Observation l ACTIVITY CO TENT OF RELE ASE AMOUNT OF ACTIVITY LOCATION CF RELEASE 7

i s d 9 W

mELEASE@O to 11 l Z l@l N/A 44 l lN/A 45 30 PERSONNEL EXPOSURES

• q , M NUMBER TYPE DESCRIPTION 39 i 7 1010 l 01@l Z l@l N/A

• l PERso~NE L ,NJ,Es Nuo.ER eEsCRiniO~@

ila l 0 ; O l 0 l@! N/A 7 8 9 11 12 30 LOSS OF CR OAMAGE TO FACILtTY TYPE D ESCRIPTION r TT14 3I Z I@l10N/A 80 02110 '

7 80 PUBLICITY NRC USE ONLY D ESCRIPTION

• rSSUED .

2 O l Nl N/A l llll lll!!Ill lI 7 3 3 10 68 69 80 %

! (303) 785-2253  ?