'\

PlOOt •. •..

R r--sJo"ET: :-.=::-: • :.,. •• :•:J

so'p No: Z-92" · : ,..,,_101"�1-1 ;qurt 1001-8

. : : ..... -: � · . ....:. ·--NOT I: ,...,;w;_,-"'"'"'"•'" Ar 1001

"""" •• ,........ ...-... c.o...-...... Unit No.·· 2 ------''"'' .. "" . -.--. .. . 0111 516179

.. � .l�. J'itlt • __ .1.1 .t.E.LTO!liL!!4�Nl...JF:Jl.JO\,ij ·:u1RuA!..liu:F;...�.C,jALI.I..LCJJ!!ILI .:�n.a.I.a.IuOuri::�.S---------------- ------.-- ·-- . . . -. To provide a Means to detenn1ne letdown of the Makeup Tank. _ _3. Atuch procedure to this form wrin1111WUdlng to the following fornL

A. llmitationund Precautions I. Nudur Safety 2. Environmental Safety l Penonntl Saint · 4. Equip1111n1 Proteetion

. ..-.-.§.. _lnft!III!JiJp __ -- -·· C. Pmctdutt

4. Genautlld by _..:.,TS�P..:.G:.._ ____ _ _ __ _ Oatt 5/6/79

- . . -- . . ....

Duration of SOP • ,,..., ... --·�·-•- eo doyo ,,.... "'" .., __ dot• et '"" sor ,. ,.,. w lbl -·- whllfl ___ ""'·

Ia)

6. hi Is tht proctdurt Nucl•r Safety Rlletlld7

r new permanent CJ

0

(b) ���:: :::;,

��: ,

e

:::!::t�o�� ����·; /j/_1.' . . .... . . . : ...... Ya0

ll'"yes .. , complttl Environmental Eveluation. 111 � 1 • • • • • • • • • _ • • • • • YnO lcJ Do• thl! proclldUII affect radittion expcnctt o p mnn�? • • • • • • • • • . • • • • • • • • • YaCl .. -· ... - . , , NOTI: II oil--•• •• .. ,. ... ,.,. ch- '- " · ·••••••:! .. !r:)"- Sllltt ,., _ _._. If.,., •"-'",.

·-- • - .. ..... _.... -.-..� ......... ""'"' be ........... bf ·�· UNi lolpetlltt....,....,

. 7. Rmrw1nd ApptOVII

D•••

NoCl

NoD

NoCJ

T..,,.., 11-..an1

..

1 �.:-;.:·_ ·..:�· .. :-:-:-:.-::-; .·. =� :.---·:� �=--�r;'IC:-·.: ·•: .. _ _ ..=. -=-=::= �··· Rev..-0 :-SJ�/�.---:==2.· ..

·--�:� . . - ·- :--::- --� . ::.. ............. -�·1tit� � :;.- •'. r:.:._..:.:-� .. . •" .,:_. ... ... '-:.· • . •• t

.. _.._....., • ·: � � �•:·

�.,.·_-·· • I :: :··•- • - •

: :---7=-:--. : . ;.-._ -:.t_:.-::r-··· LETDOWN TtO!jjFTlll#--flltG!Ui£f:OttS �· ----·-· �· �7-�-oo:-- • �- • 1. 0 . • PURPOSE

To provide a means to detennine letdown flowrate using a mass balance of the Hake-up Tank (HilT).

-2.0 REFERENCES . ·- . �---·-·- .. - :. ......

·----None. · ·-· ·--· --- .. . _,. .. l...O.......LUiiiAtiONS.Ni.D..'!f!.ECAUTIONS

None.

4.0 PREREQUISITES

--� .

4.1 The RCS shall have a bubble in the pressurizer.

4.2 No RCS sampling operations or sample line recirculation shall be in -·· · - · ·· ·· · progress during conductance of this procedure.

4.3 �lo JIUT sampling operations shall be in progress during conductance of · · this procedure.

4.4 Hake-up water to the HUT from the RC bleed tanks and boric acid mix tank must be zero durin9 conductance of this procedure.

4.5 RCS pressure should be kep� as constant as possible during this procedure.·· ···---. ·- _ _4.6...RCS make-up th,rou9h HU-V17/18 mU:st' b� isola"ted"throughout this pro!=edure.

·4. 7 Pressudzer level is 375 .:.t 25 inches.

5.0 SPECIAL EOUIP�IENT .. _____ ···--- ------ .• ••

• • --· - - •• 3 -· __ ..,_ --·-- .. .... _ • ·-•• :"' . � - •• ... ----��one •. -- ----------·---

6.0 M£THOO ----- - .

6.1 'Shut or check ·shut MU-Vl7 and MU-V18. -· --___ ._.,;6;.;·...;;2__-;;S;.;.;.h;;.:ut. �heck shut 1-l\J-Vl6-(_�ts/C(D},.-__ _ 6. :t "Vel"'TT.Y MO=vs··rs a l:fgnect-fW:::¥�d��"'f'tow:::fJ[' the-ftUT-. -

6.4 Verify no RCS sampling, RCS.sample.ljoe Lecfrculation, or HUT samp� fng fs in progress. _-···

�. ..._ 1:'

- =---

: ......

6.S

·-2-- ·�

Z-92 Rey. 0 5/S/79 . .: ..

Verify no �ke-up to-th' HU�• �-R�eed tank or boric acid ai� tank is ln progress.-·. · ·:.. •. · ··=--�··.:....;..=----

�: Th� following steps refer to Attachaaent 1 for data collection.

6.6 Record date, time, and RCS pressure. (linea 1, 2, and 3)

6.7 Read and record each RCP seal injection �d seal return flow rate. and --- add up the total. (lines 4 and 5)

!lOT£: RCP ••al injection or return should not-be altered until co�pletion of this procedure. ----�·� _6....8 _ tteAcl .HUL.level and tiaae. And record oa line 7 for "Initial" HUT level.

6.9 Wait about JQ-60 minutes and repeat atep 6.8, recording the data for the "Final" HUT level. (line 6) -

6.10 Open HU-Vl7/18 as nece•sary to maintain PZR level.

6.11 Subtract the initial values from the final valuea of HUT level and time to obtain (L) change in HUT level and (T) time. (line 8)

!!Q!U: L will be negative if HUT level decreuea and poaitive 1l HUT level 1Dcrease1.

NOT£ 2: T units.are �n minutes; L unlta are in inches.

6.12 Calculate the rate of change of HUT level ualng the method in Attach­Alent l. The conversion factor "30.8" relates gallons to inches of level in the •ru tank. --- ·-� . . . .

6.14 Submit data aheets to CPU Technical Support trailer.

- ·---­�------=-------- -·.

-

.... . ' :: l't.

t' .. ·: �.·· ·-- ···- ·.� • ·AfTACIIHOI....-=;: �

.... · :.·.�. _.;:: .....

..

Z-92·· LETD0\1•1 FLOW CALCULATIONS

�-CD. Date=-==/-:::::::::'=------·..,--Q) Time -----------

:· _-;--- - -�. . . . .

_.....,Q)"-.RC� P�E��U-� �::: • . =========-===�

----··_SEAL INJECTION (GPH) --· ..... ---- . RCP - lA :::;::::=::::;::::::-:: . . ___ _ _ _ RCP- 18 ----

·--. " . ... �-·�--- "' • SEAL RETURN (GPH)

RCP- lA ----

RCP- 18 ----

_:.,· __ RC�&·_·· ---- RCP- 28 ----__ @ _TO!AL ____ ..,..·=-=,.-::'!I•r.-. ···------G).·

TOTAL

® �1UT Level ----.,.��r------(Inches) (Final) (Flnal)

..J HUT Level- (I Time · (Inches) (initial) (Inltial)

:--��-

. .

. - .:: .. .:. .:,.• �;-. -· .....

· . .. . Change in @ HUT Level L T• (Min.) (Inches) ·

.

. .,. , . . .

---

-· --

• ·- · . •

NOTE: L will be negative if MUT level decreases, and positive if MtiT level increases. �---

Rate of Change • (L) (*30.8) • ( ) (*30.8) • of HUT Level T ( }

*MUT Volume • 30.8 (gal/in)

------- (t;PH)

1

------------------------------------------------------------------------------------------------�-.

Letdown Flo,., Rate •[seal Inject�3. -Eseal Retu��(HUT Level �te of Change] (GPM) .. ====== (Seal ln].)

(gp�

Performed By I nate

(Seal Ret.) (gpiD)

Verified 8¥

+ (Rate of Chan9e

of MtiT level)

I Oate •

.: . •