ML20199C292
| ML20199C292 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 06/10/1986 |
| From: | Bailey J GEORGIA POWER CO. |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| TASK-3.D.1.1, TASK-TM 0513V, 513V, GN-940, NUDOCS 8606180053 | |
| Download: ML20199C292 (6) | |
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Georgim Power Company Routa 2, Box 299A Wayn:sboro, Georgia 30830 Telephone 404 554 9961 404 724-8114 Southern Company Services, Inc Post Office Box 2625 Birmingham, Alabama 35202 Telephone 205 870-6011 Vogtle Proj.ect June 10, 1986 Director of Nuclear Reactor Regulation File: X7BC35 Attention:
Mr. B. J. Youngblood Log:
GN-940 PWR Project Directorate #4 Division of PWR Licensing A U. S. Nuclear Regulatory Commission Washington, D.C.
20555 REF: MILLER TO CONWAY DATED 4/24/86 NRC DOCKET NUMBERS 50-424 AND 50-425 CONSTRUCTION PERMIT NUMBERS CPPR-108 AND CPPR-109 V0GTLE ELECTRIC GENERATING PIANT - UNITS 1 AND 2 SER CONFIRMATORY ITEM 39: PROCESS CONTROL PROGRAM (PCP)
Dear Mr. Denton:
The referenced document requested additional information on the PCP and TMI Item III.D.l.l.
Attached is the GPC response to your staff's request for information concerning the PCP. Information on III.D.1.1 will be forthcoming within two weeks.
If your staff requires any additional information, please do not hesitate to contact me.
Sincerely,
,k.
J. A. Bailey Project Licensing Manager I
JAB /caa Attachment xc:
R. E. Conway G. Bockhold, Jr.
R. A. Thomas NRC Resident Inspector J. E. Joiner, Esquire D. C. Teper B. W. Churchill, Esquire W. C. Ramsey M. A. Miller (2)
L. T. Gucwa B. Jones, Esquire Vogtle Project File 0513V B606100053 h24 gl DR ADOCK-PDR l
N8
Respo-s2 To NRC Request F:r Additional T.ftraation CI39, F
" Proc;ss Control Progr.
Pg I cf 5 1.0 MAIN SYSTEM INTERFACES 1.1 Liquid Waste System Provides process liquids and spent resins for volume reduction and solidification.
1.2 Heat Tracing System Heat trace lines containing concentrated evaporator bottoms and boric acid.
1.3 AC System, 480 Volt Power for bridge crane, drunning station, compactor, and other components.
1.4 120 VAC Power System Instrument power supply.
1.5 Steam Generator Blowdown System Provides process liquids and spent resins for volume reduction and solidification.
1.6 Radiation Monitor System Provides area monitoring for personnel exposure and effluent monitoring.
1.7 Radwaste Solidification Building Houses radwaste solidification system.
1.8 Instrument and Service Air System l
Provide instrument air, valve operating air, and general air l
service.
l l
1.9 Radwaste Pump Seal Water System Provides closed loop seal water to radwaste pumps.
l 1.10 Containment and Auxiliary Building Drain System Provides collection for equipment drains in the transfer building.
1.11 Auxiliary Building Drain System - Nonradioactive Provides collection for the floor drains in the radwaste building.
l
Respop" To NRC Request Fcr Additional ',fsraation CI39,
' Proc ss Control Progra.
Pg 2 cf 5 1.12 Radwaste VRSS Building Drain System - Radioactive Provides collection for equipment drains in the radwaste building.
1.13 Radwaste VRSS Building Process Area HVAC and Filter Exhaust System Collects vents from radioactive tanks in solidification building and interfaces with VRSS off-gas system.
1.14 Radwaste VRSS Building Uncontaminated Area HVAC System Provides air to the non-process area.
1.15 Radwaste VRSS Building Switchgear/ Motor Control Center Air Cooling Provides air cooling to the VRS motor control center.
1.16 Radwaste Transfer Building HVAC Provides air flow to/from the transfer building.
1.17 Radwaste Solidification Cooling Water System Provides cooling water to the polymer tank chiller and off gas and RSB compressor condenser.
1.18 Plant Demineralized Water System Provides water for flushing, decontamination, and dilution.
1.19 Condensate Filter Demineralizer System Provides process liquids and spent resins for volume reduction and solidification.
1.20 Auxiliary Building Radioactive Area Filter Exhaust and Continuous Exhaust System Processes exhaust air from radwaste transfer building.
2.0 EQUIPMENT INTERLOCKS THAT MUST BE FUNCTIONAL PRIOR TO PROCESSING The following interlocks and associated equipment must be functional prior to processing and remain functional during processing.
Failure or actuation of any interlock will stop the solidification process.
These interlocks are computer monitored and controlled and described in detail in reference 3.6.3 of the Vogtle Process Control Program.
Respon-- To NRC Request F:r Additional fermation CI39,
' Proc 2ss Control Progra.
Pg 3 cf 5 2.1 Solidification 2.1.1 Control station door 2.1.2 Flush water pressure 2.1.3 Decant tank feed selection 2.1.4 Drum fill volume set 2.1.5 Concentrates feed selection 2.1.6 Drum processing fault 2.1.7 Machinery air pressure 2.1.8 Decant tank operation not set 2.1.9 Drum cap missing 2.1.10 Evaporator concentrates feed temperature 2.1.11 Decant tank level 2.1.12 Drum full 2.1.13 Computer requires attention 2.1.14 Valve fault 2.2 Polymer 2.2.1 Instrument air pressure low 2.2.2 System requires attention 2.2.3 Operation set up fault 2.2.4 Isolation hopper level high l
2.2.5 Process air temperature high 1
2.2.6 Computer requires attention 2.2.7 Product transfer fault 2.2.8 Druming process fault 2.2.9 Drum mixer torque high 2.2.10 Blower bearing temperature 2.2.11 Purge isolation hopper
Respon7; To NRC Request F:r Additional raftraation CI39
' Proc 2ss Control Prograt Pg 4 cf 5 2.2.12 Drum seal failure 2.2.13 Motor overload tripped 2.2.14 Storage hopper level high 2.2.15 Storage hopper level minimum 2.2.16 Storage hopper product temperature greater than 130*F 3.0 PROCESS PARAMETERS These process parameters are generic in nature and derived from the equipment vendors process program.
Upon system completion VEGP will develop site specific process parameters.
3.1 pH of Waste Stream The recommended range for borated waste streams pH is 7 to 9 inclusive and greater than 6 for other waste streams.
The waste stream is sampled and analyzed for pH prior to solidification.
Spent resin beads are characterized by analyzing the water surrounding the beads.
The pH shall be adjusted if it is outside the recommended range.
Sample results shall be documented on the Batch Processing Record.
- 3. 2 Boric Acid Concentrations The addition of a solidification additive is based on the boric acid concentration of the waste stream.
Each batch of waste is sampled and analyzed for boric acid concentration.
Boric acid concentration of spent resin is determined by an assay of the boric acid separated from the Anion resin beads.
The amount of solidification additive required and the boric acid concentration shall be documented on the Batch Processing Record.
- 3. 3 Chemical / Solids Concentrations Solidification formulation is based on a maximum chemical / solid 1
l concentration.
Evaporator bottoms are sampled and analyzed for chemical concentration.
Concentrations may be adjusted as necessary in the waste concentrates feed tanks.
Filter sludges are sampled and analyzed for solid concentrations and may be adjusted in the Spent Resin Waste Feed Tank.
Solids concentrations for spent resins are adjusted in the Spent Resin Waste Feed Tanks to obtain the specified amount of free standing water required by the solidification formulas.
Results shall be documented for concentrations of each waste stream as appropriate on the Batch Processing Record.
ResponM To NRC Request Fcr Additional inf rmation CI39,
" Proc;ss Control Progri Pg 5 cf 5 3.4 Presence of Oil in Waste Stream Solidification tests involving typically encountered oil types indicate that up to 2% concentration by weight do not adversely affect solidification.
Each waste stream is sampled for organics prior to solidification and guidelines established to limit unintentional oil concentrations below 1% as required by burial site.
Oil concentration shall be indicated on Batch Processing Record.
3.5 Slurry Settling Times In order to allow resin slurries to settle to a uniform bed of solids in the Spent Resin Waste Feed Tank a timer is provided at the solidification control station.
Settling time is controlled by the operating procedure.
3.6 Drum Mixing Times Drum mixing times are automatically controlled by an adjustable timer at the solidification control station.
Mixing times vary from waste stream to waste stream from 10 to 30 minutes.
Recomended mixing times for each waste stream is given in the operating procedures and recorded on the Cement Drum Processing Record.
3.7 Solidification Set Times Since solidification is not an instantaneous occurrence, a range of 24 to 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> is recomended to assure solidification.
Administrative controls are used to prevent shipment of waste within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> after solidification.
I 3.8 Temperature Concentrate waste temperature of 120' to 160 F is recommended and is monitored with a thermocouple.
In the event of waste temperature exceeding 160* the solidification process is stopped l
until temperature is adjusted.
The recomended temperature for other waste is 40 F to 130 F.
Due to the indoor location of the waste streams, these limits are not expected to be exceeded.
3.9 Water to Cement Ratio The recomended range for water to cement ratio is 0.4 to 1.0 and varies with waste stream.
This ratio is controlled by solidification formulas included in the operating procedure.
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