ML20236L971

Discusses Problem Evaluation,Documenting Issue Re Interpretation of Note 1 of Bpn TS Table 3.2.F.If Suppression Chamber Air Temp Instrument Not Available,Note 3 Applies & Reactor Shutdown Required

ML20236L971
Person / Time
Site:	Browns Ferry
Issue date:	07/29/1996
From:	Williams J NRC (Affiliation Not Assigned)
To:	NRC (Affiliation Not Assigned)
Shared Package
ML20236J990	List: IA-98-155, Responds to 980513 Request from Duquesne Light Co to Provide Written Interpretation of Beaver Valley Power Station,Unit 1 & 2 TSs Requirements for Channel Calibration of Rtds & Thermocouples IR 05000482/1991021 ML20236J987 ML20236K746 ML20236K751 ML20236K780 ML20236K784 ML20236K803 ML20236K816 ML20236K840 ML20236K853 ML20236K883 ML20236K902 ML20236K916 ML20236K936 ML20236K963 ML20236L549 ML20236L558 ML20236L563 ML20236L580 ML20236L584 ML20236L590 ML20236L597 ML20236L653 ML20236L921 ML20236L955 ML20236L971 ML20236M014 ML20236M020 ML20236M034 ML20236M057 ML20236M117 ML20236M138 ML20236M148 ML20236M911 ML20236M924 ML20236M966 ML20236M983 ML20236M996 ML20236N007 ML20236N047 ML20236N052 ML20236N066 ML20236N221 ML20236N240 ML20236N257 ML20236N271 ML20236N288 ML20236N323 ML20236N333 ... further results
References
FOIA-98-155 NUDOCS 9807130247
Download: ML20236L971 (2)

Text

______ - ____ .

(, 'o '

I i 9' 1 $ 7 i

f T UsNTED STATES

{

NUCLEAR MOULATORY COMMIS880N

-.m. e-

yd

\.....) July !#, Ifr96 l

IIOTE TO: Docket flie fADM: Joseph F. W1111 ass, Pro oct ftsanger Predoct Olrectorate !!-

OlvLsten of teacter Projects - t/

$UBJECT: IstA AfD R(Gl0E !! STATF O!$CU5510N5 R(GARDilIG INi[RPt[ Tail 0N Of Saotets f[AAV T[Q0ilCAL SMClfICAfl0N5 i

On July it, 1994 the resident inspectors at the Browns ferry Iteclear plant (BfN) sent me, vIt telephone facsistle machine, a copy of a probles evaluation report (MR?. This MR [aclosure 1) documents an issue regarding l Interpretat ion of Ilote 1(of BfR techalcal specificatten (15) Table 3.2.F.  ;

"5urvelliance Instrumentatten.' This este states: i free and after the date that one of these parameters is reduced to one indication, continued operatten is permissible during the succeedin 0M RA8tt.g 30 days unless such lastrumentatten is sooner made Table 3.t.f provides listling condittens for surveillance informatten readouts and is referenc9d oy T5 3/4.t.f. thich requires lastrument callbratlen and checks an set forth la the table.

The MR documents an issue where Tennessee Va11ey Authority (TVA) personnel reall ed that certain insicattens in Table 3.t.f only reference a single instrument. The affected arameters are suppression chamber air temperature, with a single indicatten b lastrument numtwr 1R 64 St. and containment ank 'A' and 'B' level, instrument numbers t! 84-!A atmosphere and LI 8413A,dilutten (CAD)ly. The requirements of plate 1 are lllogical for respective these items, since there is only a single lastrument capable of providing the required ladicatten.

TVA's resolution of the Mt uted that this inconsistency would be resolved when the leproved standard technical specifications (1515) are laplemented at j SIN in ald 1M F. IVA chose to laterpret the note as being appilcable and to g apply the 30-day allowed outage Line if the sinteus operable channels have been reduced by one. Il it : L l The resident inspectors provided me a copy of the MR with two questions. I i

was asked if TVA had discussed this issue with nel they had not. I was alle

! asked if it is acceptable to wait for 1515 laplementatten to resolve the probles. I sought the assistance of the Techalcal 5 specification Branch (0158) to answer this question (taclosure t).

On July it, Carl Schulten of Dist contacted me to discuss LSe 1 ve. In our discussten, we agreed that TVA's conclusten was appropriate for the CAD tank 310008 71 7 980624 g

UNNERST98-155 PDR

• • '/'v i L_ _ __

A Docket File Instrumentatten. The 30-day allowed outage time is consistent with the actlens required if a CAD tank is inoperable (15 3.7.G.3).

For the suppression chamber air temperature lastrument, we observed that 4 Note 2 to Table 3.t.F applies to this parameter. This note states:

From and after the date that one of these parameters is not indicated in the control rees, continued operation is permissible during the succeeding seven days unless such lastrumentation is sooner made OPERA 8Lt.

If the suppressten chamber air temperature indication is not available, the latent of mete 2 is not satisfied. For other parameters with multiple indicattens. less of a single lastrument does not result in a situation where ne indicatten recognized by Table 3.2.F is available in the control rees. If the suppressten chamber air temperature indication falls, then there is no control room indication for this parameter uhtch is recognized by Table 3.t.f.

In this case Note 3 to Table 3.2.F would apply. Note 3 states:

If the requirements of notes (1) and (t) cannot be est, and if one of the indicattens cannet be resterd in (6) hours, an orderly shutdoun shall be inillated and l'ae reacter shall be in a COLD 5NUIDOWN COICITION within 24 hove;s.

Thus, Schulten and I conclude that if the suppression chamber air temperature instrument is not avallble, Note 3 applies, and a reactor shutdown will required if the indication cannot be restored.

I subsequently called the SFN Senior Resident Inspector. Len Wert, to discuss this issue, and described to him the conclusions Schulten and I had reached.

as discussed above.

Docket Nos. 50-159. 50 160, and 50-196 .

l cc L. Wert i C. Schulten l

. _. .. - .... .