ML20033A817
| ML20033A817 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 11/23/1981 |
| From: | Utley E CAROLINA POWER & LIGHT CO. |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| References | |
| NO-81-1923, NUDOCS 8111270316 | |
| Download: ML20033A817 (2) | |
Text
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CD&L Carolina Power & Light Company November 23, 1981 File:.NG-3514(B):.
3 Serial No'.:
NO-81-1923=
Office of Nuclear' Reactor Regulation-ATTN:
Mr. T. A. Ippolito, Chief Operating Reactors Branch No. 2 United States. Nuclear Regulatory Commission Washington, D.C.
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BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 f N
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s DOCKET NOS. 50-325 AND 50-324 LICENSE NOS DPR-71 AND DPR-62 i
RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION 3 NOV2 51981-y SPENT FUEL POOL STORAGE MODIFICATION p.s. NucuAn ucta^m==
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Dear Mr. Ippolito:
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Your September 8,-1981 letter requested additional inf n
on the Spent Fuel Pool. Cleanup _ System in support of your review of our
' April 16, 1981 license amendment request. -Your. request and our response are' enclosed.
If you need any additional information', please contact my staff.
Yours very truly,
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E. E. Utley Executive Vice President j
Power Supply and i
Engineering & Construction l
WRM/CSB/lr (5385) i Enclosure
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0111270316'811123.
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- P. O. Box 15$1
- Raleigh. N C. 27602
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PRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 SPENT FUEL POOL SNRAGE MODIFICATION RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION INFORMATION REQUEST:
Describe the samples and instrument readings and the frequency of measurement that will be performed to monitor the water purity and need for spent fuel pit cleanup system dcmineralizer resin and filter replacement.
State the chemical and radiochemical limits to be used in monitoring the spent fuel pool water and; initiating corrective action. Provide the basis for estab-lishing these limits. Your response should consider variables such as:
conductivity, gross gamma and iodine activity, demineralizer and/or filter differential pressure, demineralizer decontamination factor, pH, and. crud level.
RESPONSE
The spent fuel pool is sampled once per week. Samples can be taken (1) in the radwaste sample station at the inlet and outlet to the filter demineral-izer and (2) by dip sample from the spent fuel pool. The spent fuel pool water sample is analyzed for the following:
Conductivity:
$1 umho/cm pH:
6.0 - 7.5 Chloride:
5500 ppb Activity:
No limit The fuel pool samples are not normally analyzed for suspended solids; however, water clarity is maintained such that the bottom of the fuel pool is visible.
When a parameter is exceeded, the E&C group notifies Operations. The normal corrective action is to place.a fuel pool filter demineralizer in service.
or replace the exhausted filter demineralizer. The fuel pool water is main-tained to meet-demineralized water specifications.
The fuel pool' water chemistry is maintained with filter demineralizers.
There are two filter demineralizers for each spent fuel pool.
The filter demineralizer is considered exhausted if any one of the following conditions is met:
(1) Effluent conductivitt equals influent conductivity at values above 1 umho/cm, (2) Effluent conductivity exceeds 1 pmho/cm by a significant margin, or (3) Differential pressure reaches 25 psi.
When any of these conditions is met, the filter media is normally replaced or another filter is placed into cervice.
These practices will be continued after completion of the spent fuel pool modifications in order to assure that spent fuel pool water chenistry is maintained within acceptable limits.