ML20203P855

Forwards Summary of Test for Chloride & Boron Analysis Employing Appropriately Diluted Test Matrix of post-accident Sampling Sys Equipment,Per 860313 Commitment.Addl Mods to Improve Sys Reliability & Maintainability Also Encl

ML20203P855
Person / Time
Site:	Rancho Seco
Issue date:	04/30/1986
From:	Reinaldo Rodriguez SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Miraglia F Office of Nuclear Reactor Regulation
References
RJR-86-171, TAC-60632, NUDOCS 8605080252
Download: ML20203P855 (7)

Text

- _ _ _ _ _ _ _ _ _ _ _ _

l 8suun SACRAMENTO MUNICIPAL UTILITY DISTRICT C P. O. Box 15830, Sacramento CA 95852-1830.(916) 452 3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CAllFORNIA RJR 86-171 April 30,1986 DIRECTOR OF NUCLEAR REACTOR REGULATION ATTN FRANK J MIRAGLIA JR DIRECTOR DIVISION OF PWR LICENSING-B US NUCLEAR REGULATORY COMMISSION WASHINGTON DC 20555 DOCKET 50-312 RANCHO SECO NUCLEAR GENERATING STATION UNIT NO. 1 POST ACCIDENT SAMPLING SYSTEM (PASS) - ADDITIONAL INFORMAITON The District's March 13, 1986 letter (RJR 85-97) indicated that the District would perform a test of the PASS equipment using a test matrix similar to the standard test matrix described in the NRC's July 12, 1982 clarification. Using the on-site laboratory equipment, the District completed the test for chloride and boron analysis employing an appropriately diluted test matrix. The test is summarized in Attachment 1.

Since the March 13, 1986 letter, the District has been making additional modifications to PASS to improve the system reliability, maintainability, analytical accuracy and ALARA. These modifications do not change the analytical concepts or methods of the PASS System. The attached Design Change Notices (DCN), DCN #13 to M575, Sheet 1, and DCN #8A to M575, Sheet 2, show these changes.

The redesign of the Sample Collection and Analysis System (SCAS) shown on DCN #8A, provides for replacement of all metal seated valves with soft seated valves. These new valves are designed to accommodate particulates in the fluid system, and have built-in compensation for wear without degredation of their leak tightness. This valve replacement should significantly improve the reliability of the system.

The revisions to improve maintainability include a complete rearrangement of all of the hardware in the SCAS cabinet. This rearrangement provides easier access with quick removal capability for all components that may require maintenance or calibration.

Other improvements to the PASS System includes:

The redesign of the piping s'/ stem to separate the Reactor Building atmospheric analytical syste.n from the reactor coolant liquid analytical system; i 8605080252 860430 00 PDR ADOCK 05000312 l P PDR

/ l DISTRICT HEADQUARTE9S O 6201 S Street, Sacramento CA 95817-1899

s Frank J Miraglia April 30,1986

)

i

• Tho. modification of fluid flow paths to minimize dead legs and other conditions that could. lead to misrepresentative samples;

"* The replacement of certain components of the ion chromatograph to improve its resolution as well as improving the overall accuracy of the system and;

• The reduction of the, total inventory of contaminated liquid in the SCAS at' any time in order to significantly reduce exposure to both 0perations and Maintenance personnel.

The above enhancements do not. alter the capability of the Rancho Seco PASS to meet the criteria as discussed :in.the District's February 6 and March 13, 1986' letters. However, the changes implemented under the Rancho Seco PASS Improvement Program will effectively improve the reliability and accessibility of the PASS System while significantly reducing personnel exposure. -

If you have any questions, please contact Jerry Delezenski of my staff at (2 333-2935 extension 4909.

ty -

R. J. R00 GdEZ ASSISTANT GENERAL AGER, NUCLEAR Attachments (5) n 3

Attachment 1 RJR 86-171 PREPARATICN AND ANALYSIS OF TEST MATRIX FOR PASS A chemical matrix was prepared with approximately those concen-trations suggested by the NRC. The minor changes in concentration were a result of stoichiometric limitations for the reagents used.

Two parameters, pH and conductivity, were measured on the undiluted matrix; however, no accuracy data are applicable for these measure-ments. A diluted portion of the matrix was analyzed for Cl and Boron by I.C., with the appropriate accuracy data included. Listed below are the concentrations of each component for the matrix:

Ion Succested oom Actual opm Reacent Used Grams / Liter B 2000 2000 H3B03 11 439 Li+ 2 2 Li 70H.H 2O 0.0349 NH4 + 5 1.2 * .0196 K+ 20 12 * .0623 Cs+ 250 250 CsNO3 .367 Ba2+ 10 10 Ba(NO3 )2 .0190 La3+ 5 13 .0349 Ce4+ 5 5 (NH4)2C e(NO3 )6 .0196 Cl- 10 10 LaCl3 .7H20 .0349 I- 40 40 KI .0523 NO3 - 150 136 * -

• reagent (s) listed with other ion Anticipated analyses for the PASS in its present configuration are pH and conductivity on undiluted sample (in-line); Cl and Boron analyses on diluted (grab) sample using compensatory measures. The dilution can range between 500:1 to 1500:1.

The dilution used for this test was 625:1. A Boron and chloride '

- standard of known concentration of approximately the same concen

- tration as the test matrix was analyzed in conjunction with the test matrix. The discrepancy (%) is noted between experimentally determined concentrations and concentrations expected (listed as actual).

Listed below are the results of the analyses: ,

pH =.5.62 (on undiluted matrix) .

conductivity = 778 pS (on undiluted matrix)

Boron = 3.05 ppm for 1/625 diluted sample) : Actual = 3.2 ppm discrepancy = -4.7%

Cl = 15.7 ppb (for 1/625 diluted sample) : Actual = 16 ppb discrepancy = -1.9%.

i 1

e n s,- ,en, ,- ..n-- ,,n,. ,- ,n.., ,,, , , ~ ~ ,-, - , . - - - - . - - - - , - ~ - ~ - . - -,

[*~ = l

• l a- l' as e = l I e l ' (Wppkg i +a '

, 9_"0 i.'a -

j '

k

{g I a a E yM i q,,

s g ,,, _ ...

-ms -

i'l, i 9, I .o  ; n ., ;

. a .

e0 "FIF l 1

i y,  !{ !Jj d .

~

ib TNS k

l @ =

l r zu_ g Kgd. e 0 - -];

..S .

g k g

-- , , g r--

t (pK----- 2 i e <

n gi j

c4

• pg.

I ar , i,n[g u .

e Tt, -

==

b

• j e

J ll gg (- ,

$ i n' [ .

.- l(d4 8 y y

] --- b j,9 ,

,EA ii!n

- p

. - . . - $--- S "st Jj  ; "

Na zi

l .

t t.

(r ..N. i,

g, i,!

--ila p-y -

ia c, l 5

, / t  !.

e:

, y w .

eii

!, +d [-b 4 ll*

s

.:e f, s , .. -

.._ _.h,. .

. M_

,v , , I-

r. -

, b<a,y, y e _..

e

., a a e, g

.s ---m.,a ..- = > ~ ~ . - t in 3

: s,i g f.?I o r r i'~i-?

l [e) .

Pkr ,

l ,rT i,%

, , 8 r

} Q R& - *-- . .

,t i .,

i

: i , v

>j a[i* )> h(- > iiii

l e~=/ 1 i c i

) ,i, : l:!.Li

;-la*-....a y'y C, 4 .,

N -D-f I -- *Cw "I I~

r

,,d e 6' e1 5 '

a i i

=

E

. . yh. :+

.n,, ;

l'%g}

4

% t ka l1-~

,3 Ilg nr i

a s.h i

F LG - eius

[,$.  :=dj?  ;

l 5  !./

u-a@ 4 bl ~

q <-)-  ;> g g  ; j

= G l

,n %p----);  : *  : -

i E l, r b T l $.m i 8

=

E c ..

i ", .

e 4

n. i )y.....1 l,

=

kd m.

d, i.

W. 4, '.

j g ,

a 5 l qal ()1l

=  : .

g 3 p c:n til.)'

E hji [dp i T$ $ :.Il 'lt -u -

sc r >

n 33

-1

• E I .) '

I 5

h i!)I l-B I

,.....-.-----c..----==--..-..===-...-== t

1 g ,

. . s . . = , - , . .

E ll L l  ! I g E 4

!q 7 ' ;I 3 i

l i,p ll I!a .I 4 ii ' pli ni l;g n 1  !! i, 1

ijy"!)

f. i ill *g i if Ij ij Q

}Rc i . {'$ t.4 e

3 5

=

r<

I Tr d, ,

- . 4 a3c% L'4

-  !. a o il r Y 2 Ia ch t i? Ai E

,<c<y \

~ - m!i [Ff . l -

' T i d.4  ;

2 '-

49j}j l e a a,s -p;.j.l.

L

=

)e gs jd s

af et r i

, ,,a

! =

.. *, s I I $x t i I '

'['

i t op, n g g L aw i l -l .m.t g ':sw/ i9'i -

h KU s M. .

ini 3

e ()3%u Ql k

+ 1 3'e'Q  : -~+

=

s  : hxa $81 ll l

$p 'w d a / e _t

,{II a

= p -_a ' - - - - ,

c.

. ,u Q

'[y j g _

._____ i 2 r_ ,._ __

! $ _ ,@y! 4H_ ,t_:

9 1-I -

i 1,F7.,_.w. gie\P J.

m :. - c, s m

_jP,e Fi .} u kp

( 3I :t

, e. *4

g a u Aa> i eini i p gm 3 l

u u d,e--+en. r r I,, g+ 7;;

- 24 s a, .

r *.

- I!' $f [d

[',"; [ T a;

'I md; 3 K w - -

I i  ;

E 3 3 ,_

a

'i ,

(3 N

_ ,y ,

v n

,r .

O

_fQ ,. .

fjk_ r-------

-ilh,l-- i

-)..u i @'a m--

, 1 ,i ,f . , I 7, 0J

,J/. , Q, jh.,, c, I . {.!

j a-

.. . ,. ~

"5h

.p,

,j wl-,. ! '1a G a-41 y . L, ,,. l i g. - . I ' r- _M

~~

-ga .

I ,l*Ee

$lj }

~

/

l by d' L i rc}

y  ! I' ihA 5

% v) e l';iUn@k;k@,@;:

'o- i 8 il i

b e i 3

a p m,L 9

e ,

3

- 3@.

2 a {. = = , ~.

-.n

. 3 <

e g

xf Hga,pv2 S

i 1

i a- 'n.am ,

n

i i

P e '

s -

g, i i

.  : , _c ,

I .c l

~

. 8 i !o a s .

'a.

e >e ;di y o .

30u., 6h[ f u

}

e

,6' ,jkI g I s -.

Ndhg1-!i!!

4, ,--+ %, ,

i

• ,l , / EW, 1 jc ll o

' f) (il>

,3,A ,

i o.. ;lI n L.i

.i.. !. e.

i, Igi g

jIn a i

i

d. . liIf ^

1 v

l l

l .

l .

l .l = -

l -

---

.-----_.___._____-___,)

. ,- [.' :f' -

~

o.

7- j.  % j ,

• .. ~i-  ! ,{

; y y b 5l l Ii !@

[y ,

kE 44 .

• l p

c ,g 3 .- ., .

g. g w.  ; ,li 1- F

, d; -

d "1p .,

1!':8i s 5 x

.c 23 L 9 y... n: J, z : "# . c -

.. 6< g  ::h l

(

Q1 y

-al

. .j _

-  ;- p 'y~

j Sm # t '

(Q

. . , y 8k g -

l 1

y d\

g ij  !

N hh sk i _

bg. o m,gi (phi!h j ?t --

Eg1, y

, n, m s% 1\4 N\ i

~

r 1

@f xx n( x x x x

_l.

1 ;g l

=

7 Qg'Et N ).g.

\t N N N Ny x e i' a

, . i9 \ % As N glg ri H

.,N N N N*)c..,> X

- ~

5 l 3 \ \ 8 I 1

-h h * \ \ -

ed N

N N a\w '

\im =c ',il

. g3

, ,1.

im x et i 't..en ,

41 u,

n ,s  : x D, a

, /

@ \.

x1l. f ,. N e

s ,s.

r ,.. ,

. . <<o s s .s i

.e

,t -a g 54  :

ly if ( l UM _ .% h-  : 8: "~l f'~~

'N,y) st t!  ? > ~ . = @19 ,\

~

j Q i i

! I D @ i!!/ Y ,s h>i'x b[,o--.\ yg. a t \ 3 3 i E [ji' " [

                                                                                                                "'          I uf            MT1
                                                                                                                                                           \N                                  h, $ , 5 7I                                                       k~

p3 \{ i k .. 1h

,iA \g;o j q!q>j.! = i N -

o ry-  !

                         -l                                                                  -                                                    -                                              -
                                                  .I                             I                           I             I                 I            I               I             1              I I
                         =-                 e >                                                                                                                                                      e

                           -                      i                     .                       m                  o                         ,                     o                       j              .
         . ahi" I            fi                                                                                                                                              h  l V

fiNr i t!  !, 1Q1

                                                                                         -              ~-

y p2 l 0

                                                                                                                                                                        )' j,
     .      is.

a i. g m's .

                    .2     a                                  ;_,j       J h*

i <0

• j

                                             @If L;a l c@                                --
                                                                                                                                ;;;                   3g                ;g 0 d a 'r ima                                           2--                  ,I      a i                  =                     33                                          .g
                                                                                                                                                                        !, s t Et t                i                                                                                             g                     c e
     -                                               r-
                                                 @c v3              a.
                                                                              .I
                                                                                             !y sf           -
                                                                                                                                =                     30 3

q ' 9 s g m* 2 [ild kii pe i

-;j g" 9-s E o

                                                                                   .,         u-                                                      z
             ,    a                                   !                                                                                                    4   ~
                                                                                                                                                                        , f !;!

E - I' d') s l ,5' $5 i

                                           ,$g9-  5
                                                                                        >s h'=g         y       ,,

l i

                                                                                                                                                                                        ! t t

r

                                           '*kh                   <        -
                                                                                ,j[          .

O

                                                                                                                                         -g I       i i

h i. l i 1 g i!fjd r ---

                                                                                                                                                                                         ~

U II 4 - Tg ivr4)} 4-@' 4

• g u l > y -

s l' , -

                                                                                                                                                 -f~       '                                         t
                             'il                           %h                   _o-                     @o-3!i-                       :             I                                                   .

v i s Ib-h $ , l \

                                     %'                                            s e               pj                                                                                   i
                         ),           em                                           S ispj                                               *
                                                                                                                                                                                               ,1 u                                                               +              Ea                                           =:,          :      ill J c

4 y'g* *

                                                                                    ;[e              r i

Tg d@j b i > A94 '

         ?a                    ;           ,. :,-- w ba - se o ;

k si i i h  ! y 4 Qg3 () h .

              !dr                                                      2                     fk              "1 w .7x-T                                         ,
                            ,,5 m,g.

45 tr m - v - x s e

                                      ,       s h            kt b>l+          , I [)                                       I                                                                         -
                                                                                                                       . []!!
                                                          ~

_Iml!11IM._. ill 31

                               =

l g  ;!

                                                                                                                                                            )<:'aund
                                                                                                                                                            ~
                        -t

• l @ I'- $ j 1! a g z!!e

                                                                  * ~4 -e-                                                                                    !.u. g y
                                                                                                                                                            !%UAsid l<

a

d. >> 46 '

_  : h. 4r! I

• IIbm , m1 g h -

a

                                                                                                                                             ! !(6lljf).mdPQ,ih3 ripe p,a gsg:                            s'                              q 1,,                   ,

F- 3 g #y $ ppm a e g ia ,

                                                                                                  -J 2

M54 %s W m ets 1 4 s g; 3 1h S 1  ; I 'lkI!!!I!$l!pslik  !$ 0 O lhhih.fi - I}}