ML20099C762

Rev 2 to Solid Radwaste Sys Process Control Program

ML20099C762
Person / Time
Site:	Limerick
Issue date:	02/28/1985
From:	PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20099C757	List: ML20099C754 ML20099C762
References
PROC-850228, NUDOCS 8503110421
Download: ML20099C762 (11)

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LGS - PCP Rev. 2, 02/85 7, n,

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-LIMERICK GENERATING STATION UNITS 1 AND 2 PHILADELPHIA ELECTRIC COMPANY 1

SOLID RADWASTE SYSTEM PROCESS CONTROL PROGRAM i

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LGS - PCP Rev. 2, 02/85 TABLE OF CONTENTS SECTION PAGE 1.0 PURPOSE 1 2.0 SCOPE 1

3.0 REFERENCES

1 4.0 OPERATING ORGANIZATION 1 5.0 PROCESSING 2 5.1 Waste Types 2 5.2 Process Description 3 5.3 Dewatering Process Control 6 5.4 Product Control 7 5.5 Procedure Control 9 6.0 RECORDS 9

LGS - PCP Rev. 2, 02/85 1.0 PURPOSE Provide guidance and boundary conditions for preparation of specific procedures for processing, sampling, analysis, packaging and shipment of solid radwaste in accordance with State and Federal Regulatory requirements.

2.0 SCOPE This program is applicable to Limerick Generating Station solid radwaste processing system.

3.0 REFERENCES

3.1 49 CFR Parts 170 through 178 3.2 10 CFR Parts 20, 50, 61 and 71 3.3 Standard Review Plan 11.4, Rev. 2, including Branch Technical Position ETSB 11-3, Rev. 2 3.4 Low Level Waste Licensing Branch Technical Position on Radioactive Waste Classification, Rev. 0 (5/83) 3.5 Low Level Waste Licensing Branch Technical. Position'on Waste Form, Rev. 0 (5/83).

3.6 Burial Site Criteria for Barnwell S.C., dated 1/14/82.

General Criteria for High Integrity Containers (SCDHEC) dated 10/22/80.

3.7 South Carolina Department of Health and Environmental -

Control Radioactive Material License No. 097, Amendment No. 41. (Barnwell Facility) 3.8 Barnwell Site Disposal Criteria, (Chem. Nuclear)

November 1982.

3.9 State of Washington Radioactive Materials License No.

WN-IOl9-2, Amendment No. 15 (Richland Site) . lf 4.0 OPERATING ORGANIZATION The operating structure of the solid radwaste processing system shall be as outlined in Section 13.1.2 of the FSAR.

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LGS - PCP Rev. 2, 02/85 5.0 PROCESSING 5.1 Waste Types 5.1.1 Condensate Filter /Demineralizer Sludge

a. The waste product generated by the backwash of the condensate filter domineralizers,

b. Sludge consists of powdered ion exchange resins at varyin:3 degrees of exhaustion, fibrous filter media, and small concentrations of various solids and corrosion products.

5.1.2 Waste Sludge

a. The waste product generated by the backwash of the liquid radwaste and fuel pool filters and demineralizers,

b. Sludge consists of powdered ion exchange resins and bead resins at varying degrees of exhaustion, fibrous filter media, and small concentrations of various solids and corrosion products.

5.1.3 Reactor Water Cleanup Filter /Demineralizer Sludge

a. A product of the backwash of-the Reactor Water Cleanup filter demineralizers,

b. Sludge consists of powered ion exchange resins at varying degrees of exhaustion, fibrous filter media, and small concentrations of various solids and corrosion products.

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LGS - PCP Rev. 2, 02/85 5.1.4 Dry Active Waste Dry wastes consists of air filters, miscellaneous paper, rags, etc., from contaminated areas; contaminated clothing, tools, and equipment parts that cannot be effectively decontaminated; and solid laboratory wastes.

5.2 Process Description 5.2.1 Condensate Sludge

a. A condensate filter-demineralizer backwash consists of approximately 9,000 gallons of slurry with an average of 280 lbs. (dry wt.) spent resins and crud,

b. Backwashes are collected and settled in a l jg condensate phase separator. Clarified liquid is decanted until 214 ft# of settled sludge is obtained, as annunciated by high level alarms LAH 133A/B (233A/B). The total number of backwashes accumulated in one phase separator shall be limited to 17.

c. The settled sludge is allowed to decay in preparation for dewatering, while db backwashes are routed to alternate phase separators.

d. The phase separator liquid level is adjusted to provide a total tank batch volume of at least 9,500 gallons. Total batch level is monitored using LI 108A/B (208A/B).

e. Phase separator contents are recirculated for a minimum of 30 minutes to mix contents of vessel, resulting in a homogeneous resin slurry of 6% (dry wt.)

or less total solids.

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LGS - PCP Rev. 2, 02/85

f. The solids slurry feed to a centrifuge is controlled at 18-22 gpm by FVC-67-046A/B. l dh 5.2.2 Waste Sludge

a. A backwash from a radwaste or fuel pool filter demineralizer consists of approximately 1,925 gallons of slurry, with an average of 60 lbs.

(dry wt.) spent resins and crud.

b. A backwash from a radwaste demineralizer cons'ists of approximately 1,500 gallons of slurry, with an average of 2125 lbs. (dry wt.)

spent resins.

c. Backwashes from radwaste filter demineralizers, radwaste demineralizers, and fuel pool filter-demineralizers are collected in the waste sludge tank until approximately 12,000 gallons of liquid is accumulated. l dh, Total batch level is monitored using LI-66-004 (radwaste control room) or LI-66-005 (local panel),

d. Waste sludge tank contents are recirculated for a minimum of 30 minutes to mix contents of vessel, resulting in a homogeneous resin slurry ranging from 0.5 to 6% (dry wt.) total solids.*

e. The solids slurry feed to a centrifuge is controlled at 18-22 GPM by FVC-67-046A/B. [ fh During normal operation the waste sludge tank contains only the radwaste and fuel pool filter demineralizer backwashes which result in a 0.5% (dry wt.) total solids concentration.

Periodic radwaste demineralizer backwashes will increase the solids level to approximately 3% (dry wt.) for one bed or 6%

(dry wt.) for two beds.

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LGS - PCP Rev. 2, 02/85

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f. Waste sludge tank contents may also be sent to a condensate phase separator for processing in accordance with Section 5.2.1.

/h 5.2.3 Reactor Water Cleanup Sludge

a. A RWCU filter-demineralizer backwash consists of approximately 1,100 gallons of slurry with an average of 35 lb. (dry wt.) spent resins,

b. Backwashes are collected and settled in a '

phase separator. Clatified liquid is decanted until 100 ft 3 of settled sludge fh is obtained as annunciated by high level alarms LAH-66-020A/B. The total number of backwashes accumulated in one phase t separator shall be limited to 65.

c. The settled sludge is allowed to decay in preparation for dewatering, while lfh backwashes are routed to the alternate phase separator.

d. The phase separator liquid level is adjusted to provide a total tank batch +

volume of at least 4500 gallons. Total batch level is monitored using LI 021A/B.

e. Phase separator contents are recirculated for a minimum of 30 minutes to mix contents of vessel, resulting in a homogeneous resin slurry of 6% (dry wt.)

, or less total solids.

f. The solids slurry feed to the centrifuge '

is controlled at 18-22 GPM by FVC 046A/B.

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LGS - PCP Rev. 2, 02/85 5.2.4 Dry Active Waste

a. Wastes are collected in containers located in appropriate areas throughout l dh the plant, as dictated by the volume of wastes generated during operation and maintenance. The filled containers are sealed and moved to a controlled-access enclosed area for temporary storage,

b. Compressible wastes are compacted into 55

-gallon steel drums by a hydraulic press to reduce their volume. Ventilation exhaust is sent to the radwaste enclosure HVAC system.

CAUTION: Items that may result in free water formation will be removed and not be gh compacted.

c. Non-compressible wastes are packaged manually in 55 gallon steel drums or in other suitable shipping containers.

5.3 Dewatering Process Control 5.3.1 The 0.5-6% solids slurries discussed in Section 5.2 shall be fed to a centrifuge at 18-22 GPM. The flow rate will be controlled l /h by FVC-67-046A/B. Actual flow rate can be verified by observing FIC-67-046A/D (local).

5.3.2 A centrifuge pond setting of 3.0 shall be used for resin dewatering. This pond setting shall be maintained for all dewatering operations.

5.3.3 Proper centrifuge operation shall be observed.

(Refer to the Sharples Centrifuge instruction manual, 8031-M-73-14-5). Bearing l

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LGS - PCP Rev. 2, 02/85 temperatures, equipment vibration, and differential torque are alarmed at levels that may adversely affect dewatering performance.

5.3.4 The design of High Integrity Containers which are used to package dewatered resin shall be reviewed and certified by the appropriate licensing state to assure 10CFR Parts 61 and 71 and applicable DOT requirements are addressed.

5.4 Product Control 5.4.1 For purposes of establishing correlation factors between the waste classification nuclides (see 10CFR61.55) and nuclides which can be easily measured by gamma spectroscopy, dewatered resin shall be sampled at least on an annual basis to determine and/or verify the specific isotopic content of each waste stream. A detailed sampling and measurement of individual waste classification radionuclides shall also be performed whenever process changes occur that may significantly alter (e.g. by a f actor of 10) previously determined correlations of gross radioactivity measurements.

5.4.2 A limited number (e.g. one or two) of samples shall be taken from each batch of dewatered resin for Class B and Class C wastes and applicable isotopes quantified by a gamma spectral analysis.* Non-measured isotopic '

content shall then be determined by correlation to the measured isotopes based on the annual analysis of 5.4.1.

• If radionuclide distributions are shown to be reasonably consintent between similar batches, consideration may be givea to decreasing the frequency of routine measurements.

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LGS - PCP Rev. 2, 02/85 5.4.3 Container gross radioactivity shall be I [b measured and recorded at the completion of each filling operation. These activity measurements may be used to scale the nuclide concentrations for containers of similar waste batches for which gamma spectroscopy results and correlations are available.

5.4.4 Centrifuged resin shall be sampled at least on an annual basis to verify that the free liquid content of the packaged product is within limits established by applicable regulatory agencies. Sampling and measurement of free liquid content shall be performed during initial startup, and also whenever process changes occur that may significantly alter system dewatering performance, until compliance with . moisture content limits under these conditions can be demonstrated.*

5.4.5 Dry active wastes shall be sampled at least on a bi-annual basis to determine and/or verify the itotopic content of the wastes as discussed in 5.4.6.

5.4.6 Grosa radioactivity of dry active wastes shall be measured and recorded when each container is filled. The activity measurements shall be correlated with the distribution of radionuclides expected within the wastes, based on periodic sampling discussed in Section 5.4.5.

5.4.7 Each waste shipment shall be accompanied by a shipping manifest giving a physical description of the waste, the volume, the radionuclide identity and quantity, the total

• Determination of free liquid content shall be a filtration analysis method or equivalent.

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radioactivity, the principal chemical form and f

waste class.

5.5 Procedure Control 5.5.1 Processing of solid radioactive waste shall oe performed by qualified operating personnel.

5.5.2 Processing of radioactive spent resins shall be performed in accordance with approved operating procedures.

5.5.3 Procedures shall be based on documented test data which demonstrate the ability to achieve acceptable product moisture content as specified by applicable regulatory agencies.

5.5.4 Procedures for processing and containerization of wastes shall ensure that specific burial site requirements are satisfied.

5.5.5 Sufficient documentation shall be maintained to demonstrate compliance of solid radwaste processing with the Process Control Program.

5.5.6 Any changes to the Solid Radwaste Process Control Program shall be approved by the Plant Operations Review Committee (PORC) .

6.0 RECORDS Waste classification records, waste form records, and other records required for the preparation of the semiannual Radioactive Effluent Release Report shall be prepared and retained in accordance with the requirements of 10CFR20, 10CFR71, 49CFR170-178, and LGS Tech. Specs. Ib 31/srs.pcp i

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