ML20245E060

Forwards Revs to Util 861202 Response to NRC Liquid Effluent Inquiry for Clarification,Per 861222 Discussion W/R Meeks

ML20245E060
Person / Time
Site:	Rancho Seco
Issue date:	01/05/1987
From:	Julie Ward SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Marsh R NRC OFFICE OF INVESTIGATIONS (OI)
Shared Package
ML20245E058	List: ML20245E054 ML20245E060 ML20245E063 ML20245E067 ML20248B416 ML20248B467
References
FOIA-89-2, FOIA-89-A-7 JEW-86-1127, TAC-64735, NUDOCS 8811110149
Download: ML20245E060 (6)

Text

a WSMUD sAcnAuturo MUNICIPAL UTILITY DtSTRICT

u. s... . u 6201 S Street PO Ben 15830 Sac /gfntp CA 95852-1830.(9161452 3211

[ AN ELECT RIC SYSTEM SERVING Jill A4p A OF CALIFCANIA N E' A 7 JEW 86-1127 j y i...

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l January _ 5, 1987 Robert G. Marsh Office of Investigation Region V U. S. Nuclear Regulatory Comission 1450 Maria Lane Suite 210 Walnut Creek CA 94596

Dear Mr. Marsh:

The enclosed revisions provide additional clarification of our December 2, 1985 response to your liquid effluent inquiry. This matter was discussed with Mr. Ron Meeks on December 22, 1986.

Thank you for your consideration.

Sincerely,

. Ward Deputy General Manager, Nuclear Page U DI - 8#

_- . _ _ _ - - _ _ __ . _ _---__-______ - __ . - - . __ _ _ _ - _=-_______ _ _ _ - ____ - - _ _ _ a

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Table 3 - Chemicals Intentionally Added M Water Systems and the M system M which 3 occurs.

1. Boric Acid Reactor Coolant

2. Lithium Hydroxide Reactor Coolant -

3. Sodium Hydroxide Regeneration (Ion Exchange)

System _

4. Ammonium Hydroxide Fcedwater

5. Hydrazine Feedwater, CCW and NSCW

6. Morphaline Component Cooling Water Nuclear Service Cooling Water

7. Sulfuric Acid Circulating WaterjRegeneration (Ion Exchange) System *

8. Alum Clarifier

9. Sodium Hypochlorite Nuclear Service Spray Ponds

10. Chlorine Circulating Water, Sewage Effluent

11. Nitrite-Borax Mixture Chilled and Heating Water Systems

12. Ambitrol Diesel Generators Coo ing"WEter

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PaEe 7 M _ of 82 Pares

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DEMIMERALIIERS -

Y V REGENERATION "Y oiLUTsow MAosttvu.Lt

• suur  ; catts As COOLING TOWER DAIFT 5

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TABLE 1 i l

WASTE WATER INPUTS TO THE RETENTION BASIN AREA -)

i A. Various Drains / Backwashes j

1. Backwash from reservoir supply line. filter.  !

2. Drain from cooling towers.

3. Circulating canal overflow. l 4.- overflow from nuclear service spray ponds.

5. Backwash from nuclear service spray ponds. l

. J

6. Area drain from chemical storage tanks.  ;

7. Drain from auxiliary boiler area.

8. Drain from hydrochloride tank. .j i

9. Backwash from serv' ice water filters.  !

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10. Blowdown from cooling waters. j

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l j 11. Drain desludge and overflow from clarifier. I 1 i

12. Drain from service water pumps. j L

j l 13. Overflow and drain from cotidensate storage tank. i

14. Sewage treatment system.

15. Turbine deck drains.

16. Transformer area drains.

B. Sumps - Detailed Inputs Presented in Table 2

1. Polishing Demineralized Sump.

2. Condenser Pit Sump.

1 1

,s EXH BIT '5 mma!

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Both modification installed a temporary line of PVC-(Schedule 80)1 piping to the' RHUTs. Prior-to use after 1985, the temp.orary. piping was'hydrotested, barrier taped and-radiation area posted. The tanks . were drairied.' via the temporary piping pursuant to an abnormal operating procedure' with required walkdowns every one-half. of an hour. Prior .to -

F 1985, this evolution was not controlled by.~ formal procedure.

' The concentration of tritius' in the DRCST and the'NWHUT was -

MPC (1. MPC = 3E-3 uCi/al). 10 CFR 20.106 'and- Appendix B to 'l-CFR 20 limit releases off-site -to 1 MPC. The water transfer;

' to the RHUTs was sufficiently diluted prior to release-off-s '

to assure the l' MPC limit would not be violated. -

These temporary modifications were changes to the facility,a -

described in the USAR -(Reference 1). .'Because the changes, we.

- only temporary, the USAR .was not updated to reflect the temporary system operation. - The temporary modification of-transferring DRCST water to the'RHUTs is being incorporated' become a permanent modification to the plant.

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3 F Who Initiated CalI' Who VAs Contacted- Date.

M 11..FredKellie$ Greg,Yuhas' 6-6-f5-p..

R--con for Call:-

, Resolve meaning or interpretation of second s'entence.

. Table ' flotation 'C' Table _ 4.21-1 page 4-71. .

P.eso15 tion Reached:

If a nuclide is below minimally required LLD (SE-7l pCi/cc) .

but is a positive value it must be recorded and reported.

r Request Made: -

See reason for call.

Date Response Requested: 6-6-85 cc: R. Colombo B. Spencer G. Coward Admin Files R. Dieterich QA Files L. Keilman 4th Floor Files J. McColligan R. Miller R. P. Oubre' R. J. Rodriguez

'(' A. Schwieger '(2) 'N '

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