ML19317H371
| ML19317H371 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/19/1980 |
| From: | Mencinsky G GENERAL PUBLIC UTILITIES CORP. |
| To: | Lynch O Office of Nuclear Reactor Regulation |
| References | |
| E&L-2717, NUDOCS 8006020354 | |
| Download: ML19317H371 (17) | |
Text
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GPU Service Corporation e
a Jl Nme 100 Interpace Parkway Parsippany, New Jersey 07054 201 263-6500 TELEX 136-482 Wnter s Direct Dial Number File:
2349.2.3b May 19, 1980 E&L-2717 Mr. Oliver Lynch U.S. Nuclear Regulatory Commission Environmental Projects - Branch 2 7920 Norfolk Avenue Mail Stop P-522 Bethesda, Maryland 20014
Dear Mr. Lynch:
Attached for your information is Vikem's May 3, 1980 letter from Mr. Val Bouchard to our Mr. Tom Block detailing the present status of the fuel handling and auxiliary building decontamination program.
Please forward the attached to Messrs. Wayne Lehto and James Opelka at Argonne National Laboratory for their use.
Very truly yours,
/
l yn..
G. J. Mencinsky Senior Licensing Ergineer GJM/jed Attachment cc:
T.
R.
Block THIS DOCUMENT CONTAINS V.
F.
Bouchard POOR QUAUTY PAGES L
q\\
GPU Sen/ce Corporation is a subs: diary of General Public Utikttes Corporation 8n n6020 3$Q
INDUSTRIES. INC.
48 Pleasant Street Newburyport. Massacnuse'ts 01950 617 465 8991 May 3, 1980 To:
T. Block From:
V. F. Bouchard
Subject:
FEB and Auxiliary Building Status
Reference:
VFB/TB Memo, December 7, 1979
Enclosures:
I EL-281 II EL-305 III EL-328 EL-281 I.
A.
Liquid Waste Transfer Pump Entrance Way 1.
Area Deconned. Survey of April 21, 1980 indicates general area of SK DPM. Will be further Deconned af ter Decon of Liquid Waste Transfer Pump Room and Cleanup of Demineralizer B Room.
I.
B.
Cleanup Demineralizer (WDL-K-2A/B) and Filter (WDL-F-6A/B and 9A/B) 1.
Cleanup Demin A and Filter 6A/9A a.
Room essentially totally Deconned.
Survey of 3/4/80 indicated general area <1K DPM with a hot spot of 2K DPM at Filter 6A.
b.
Filter 6A/9A will be changed in the ensuing weeks and Room will remain closed out until resin discharge.
2.
Cleanup Demin B and Filter 6B/9B a.
Room remains at a high dose rate.
Decon will not commence until disposal of spent resin.
This item will remain out-standing for many months.
b.
Changeout of Filter 6B/9B will occur within the ensuing weeks.
I.
C.
Liquid Waste Transfer Pumps (WDL-P-6A/B) 1.
Room remains at a high dose rate. Pumps presently are in occasional use to transfer Bleed Tank water.
ViKEm 2.
Maintenance has not been completed on pumps or leaking flanges.
Cubicle will require Decon prior to this effort. Water movement will determine cubicle availability.
I.
D.
Evaporator Condensate Test Tanks (WDL-T-9A/B) 1.
Cubicle overheads have been cleaned and floor drain removed and Deconned. Area has been reduced to <4K DPM with one hot spot of 40K DPM.
Both tanks have had interiors inspected, revealing no sludge present.
2.
Final room completion will occur after transfer of resin from Evaporator Condensate Demineralizers (WDL-K-2A/B).
3.
Process water is stored in Tank B for hydrolaser use with 2 sandpiper pumps connected to tank piping.
I.
E.
Makeup Pumps (MU-P-1A, B, C) 1.
Makeup Pump A Room was initially gross Deconned by hydrolasing. Subsequently, another hydrolasing effcrt and two scrub and wet-vacs has reduced area to an average of 30K DPM with hot spots under leaking valves.
Floor drain has been removed.
Last scrub and wet-vac, with leakage inspection on 4/13/80, revealed approximately 30 leaks on valve packing and tubing connections. High dose rate on suction strainer through lead sheeting indicated 1R.
Wall penetration from valve room has hot spot of 15R.
Upon reactor plant depressurization, the pump suction strainer should be removed which will decrease dose rate and allow total Decon.
2.
Makeup Pump B Progran has.been written and room will be entered for Decon in ensuing weeks.
3.
Makeup Pump C Room was intially gross Deconned by hydro).asing.
Subsequent Decon was by scrub and wet-vac with present conditions <2K DPM.
Floor drain has been removed. Floor painted on April 28, 1980.
Upon reactor plant depressurization, the pump suction strainer should be removed which will decrease dose rate allowing total Decon. Mini-Decay Operations will delay total Decon.
I.
F.
Neutralizer Equipment 1.
Neutralizer Tanks (WDL-T-8A/B)
Tank survey indicated 3R.
Program submitted for water transfer with subsequent Decon and tank inspection.
- ViKiim 2.
Neutralizer Filters (WDL-F-4A/B)
Both filters changed out 4/lC.'80.
B Filter flushed. Filter Roon Deconned to <2K DPM.
Room closed out until next filter change.
3.
Neutralizer Pump Room General area has increased to 200 mr/hr with piping hot spots of 1R/hr. Room be totally Deconned in conjunction with tank liquid transfer and subsequent piping flush. Program submitted for options.
I.
G.
Reactor Coolant Waste Evaporator (WDL-Z-1) 1.
Smear survey of 3/24/80 indicates average DPM <2K with one hot spot of 20K DPM.
Due to large wall opening into Bleed Tank C area, room will not be completed until after gross Decon of Bleed Tank B 6 C cubicles.
I.
H.
Reclaimed Boric Acid 1.
Reclaimed Boric Acid Tank Room (WDS-T-3)
Smear survey of 4/24/80 indicated room <1K DPM with hot spot of 2.8K DPM.
Interior tank inspection remains an outstanding item which will allow total Decon and closecut if desludging is not required.
2.
Reclaimed Boric Acid Pump Room (WDS-P-3)
Area had been Deconned to <l2K DPM. However, the room had remained an outstanding item awaiting tank inspection for total closecut.
Entry in room in March revealed large boron deposit over entire floor and cone with 3' base and height of approximately 2'.
This deposit was extremely hard and required numerous entries to hydrolase with cutting tip.
Interior of cone had leaking valves causing the intial problem. Room has been Deconned to <lK DPM with floor drain hot spot of 40K DPM and now awaiting final closeout.
I.
J.
Spent Resin 1.
Spent Resin Tank A (WDS-T-1A)
Survey of 3/26/SO indicates general area <lK DPM with floor drain hot spot of llK DPM.
Area is essentially complete until resin is transferred.
2.
Spent Resin Tank B (WDS-T-1B)
Survey of 3/26/80 indicates general area is <1K DPM with floor drain hot spot of 7K DPM.
Area is essentially complete until resin is transferred.
ViKEm 3.
Spent Resin Pump (WDS-P-1) Room Survey of 3/26/80 indicates general area is <2K DPM.
Room is essentially complete until resin is transferred.
I.
K.
Oil Drum Storage Room 1.
Solidification drums and high radiation trash bags have been removed. Room has been Deconned to <lK DPM.
Storage table reduced from 95K DPM to <10K DPM.
I.
L.
Makeup Valve Rooms 1.
Access Corridor Initial Gross Decon completed May 1979. Second pass February 24, 1980 with hydrolaser reduced general area to approximately 100K DPM.
Total exposure received - 140 milli Man Rem.
Removed wood, plastic, tubing and miscellaneous trash.
Subsequent scrub, flush and wet-vac reduced area to <50K DPM as indicated on survey of February 27, 1980. Total exposure - 40 milli Man Rem.
Ccmpleted Hydrolase, scrub and flush on May 1, 1980 after second Gross Decon on valve rooms.
2.
East Valve Room Initial Gross Decon with hyrolaser on March 19, 1980 from North and South ends. Very successful cleaning of floor, wall and trash removal. Two operators received 45 milli Man Rem.
Removed wood ladder, wood, tubing and plastic trash.
May 1, 1980, completed second Cross Decon.
Removed two ficor drains. Large deposits of dirt (approximately 1") washed into drains. Removed two bags of trash. Wood chips and small trash remain. Large boron deposits washed from valve bodies. Hydrolased all accessible areas.
3.
South Valve Room Initial Gross Decon with Hydrolaser on March 19, 1980. Dissolved gross boron deposits on valves and floor. General entry area 3 R/hr.
Hydrolased 3 minutes with excellent physical results. Total exposure received - 60 milli Man Rem.
May 1, 1980, completed second Gross Decon. Washed large boron deposits off valves. Miscellaneous debris on floor washed to North Valve Room. Could not remove floor drain. Drain flowed freely.
Hydrolased entire area. Removed trash, insulation and metal.
4.
North Valve Room Initial Gross Decon with hydrolaser on March 19, 1980. Procedure allowed entry to end of passageway.
Initial Dose Rate 7000 Rad /hr
VilGlil Beta and 10 R/hr, limiting total access. Walls, floor and accessible valves hydrolased with good physical results. Noted disconnected reach rod. Total exposure - 40 milli Man Rem.
May 1, 1980, completed second Gross Decon by hydrolasing.
Large amount of debris spread at South end of room could not be flushed towards drain. Hydrola:ed drain and entire room.
Drain flowed freely.
Removed insulation and accessible debris.
I.
M.
Liquid Waste Disposal Valve Room Initial Gross Decon with hydrolaser.
Subsequent hydrolase, scrub and flush, scrub and wet-vac has reduced general area to <5K DPM. Needs final Decon to reduce area to <2K DPM.
I.
N.
Bleed Tanks 1.
Bleed Tank A (WDL-T-1A)
Tank has been pumped down to approximately 4000 gallons and will be sparged and pumped again.
Survey of March 7, 1980 indicated 2 R/hr at 6' and 10 R/hr under tank. General entrance area of 200 mr/hr. Area will be hydrolased in near future.
2.
'anks B/C (WDL-T-1B/C) sleed Tank B being processed and proposed for future water storage. Entrance into cubicle indicated 13 R/hr at 6' and general entrance area of 5 R/hr.
Area will remain outstanding item until dewatering.
I.
O.
Auxiliary Sump Area 1.
Auxiliary Sump Valve Room Complete second and third hydrolasings and removal of floor drains.
Scrubbed, flushed and scrubbed and wet-vac to reduce area to,
<50K DPM.
Floor drains removed.
Area to be staging area for Auxiliary Sump Tank Filtration and Auxiliary Sump Desludge.
2.
Auxiliary Sump Tank (WDL-T-5)
Sediment sample taken revealed essentially no sludge, but film on tank bottom. Adhesion Study with hydrolaser proved ease of removal. Procedure written and approved. Waiting for initiation of filtration with installed plant Auxiliary 5 cmp Filters (WDL-F-3A/B).
3.
Auxiliary Sump Sump contains approximately 25 cubic feet of dewatered sludge, miscellaneous debris, i.e. temporary sump pump, fire hose, etc.
Procedure written for nesludging. Awaiting construction and delivery of filter casks.
[
5 ViKEm 4.
Auxiliary Sump Filters (WDL-F-3A/B)
Both filters changed out April 11, 1980 and Filter Room Deconned to <1K DPM on April 14, 1980. Valve reach rods and Filter A lid closure bolt need repair.
Floor drain removed and Deconned.
I.
P.
Decay Heat Vaults Status remains same as December 1979 report.
Both vaults have shielded lids and will remain in this status until Mini-Decay System Operation is terminated.
I.
Q.
Containment Spray Vaults Status remains same as December 1979 report.
Possible entry in Vault A in near future if Radiation Dose Rate permits.
Future entry in Vault B remains unknown at this time.
I.
R.
Elevator Pit Waiting resolution on untreated concrete. Remains at status of December 1979 report.
I.
S.
Seal Injection 1.
Seal Injection Valve Room Entrance corridor hydrolased.
Initial Dose Rate 5400 Rad /hr Beta and 500 R/hr Gamma.
Post Decon survey indi:ated approximately 200 R/hr Beta on contact and 5 R/hr Gamma waist level. Grors boron floor deposits dissalved and valve manifolt boron deposits removed and dissolved. Major leak discovered on Instrument Rack A-10.
Subsequent flushings from EL-305 dissolved all gross boron deposits.
Interferences from staging prevent total view of cubicle. Dose Rate remains at >200 R/hr Gamma and subsecuent operations are under evaluation. Unsealed concrete apperrs to be the major obstacle in reducing Dose Rate.
2.
Seal Injection Filters (MU-F-4A/B)
Filters will have to be changad out prior to Decon.
Survey of March 7,1980 indicated general area 2-9 R/hr. Procedure for filter cartridge removal remains to be written.
Cubicle will remain outstanding item until filter changeout.
I.
T.
FHB-281 Annulus Remains at status of October 1979. Cleanup water removed and two high radiation trash barrels remain in area.
Until Decon of EL-347 and 305 is complete, this area will remain dormant.
I I
ViKEm I.
U.
General Area The general floor area is being maintained at <2K DPM. Hot Spots on survey data are routinely Deconned.
Floor drain hubs have been cleaned and Deconned.
FHB section of all floor drains, cleanouts and pump drains have been routed, hydrolased with self traveling probe and flushed. Remaining are Neutralization Tank and Pump Room and Makeup and Purification Valve Rooms. All accessible floor drains and pump drains in Auxiliary Building have been cleaned, Deconned and headers have been hydrolased.
Overheads have been cleaned and Deconned and survey Hot Spots are Deconned per data received.
ViKEm EL-305 II.
A.
Intermediate Cooling Pumps / Seal Return Valve Room 1.
Replaced large metal deck cover witn three smaller plates with ports for TV camera and ventilation or flush port. Area being used for flush of lower level Seal Injection Valve Room.
Waiting QC paper to replace Intermediate Cooler Filter (IC-F-1A/B).
General area remains <2K DPM with hot spot behing HPR-227 shield of 300K DPM.
2.
Seal Return Cooler (MU-C-2A/B) has not been entered and will remain outstanding.
3.
Seal Return Filter (MU-F-3) will be changed out af ter plant depressurization.
II.
B.
Makeup Demineralizers (FW-K-1A/B)
Remains High Radiation area.
Will be entered after resin is transferred.
II.
C.
Gas Analyzer Room Area Deconned April 1980 to <10K DPM with general area 20 mr/hr.
Changeout of MU-F-2A/B and 5A/B will allow further Decon of this area.
II.
D.
Makeup ank (MU-T-1)
No st_vey information. Remains High Radiation Area.
II.
E.
Spent Fuel Cooler Area (5F-C-1A/B)
Construction completed, original used Radiac Wash transferred and High Rad Drums moved out.
Area Deconned to <lK DPM and used for storage area.
Numerous leaks in Spent Fuel Cooling System caused chemical buildup on valves, piping, pumps and floor.
II.
F.
Spent Fuel Demineralizer Area 1.
Spent Fuel Demineralizer (SF-K-1)
Area clear of storage items and Deconned to <lK DPM.
2.
Spent Fuel Filters (SF-F-lA/B)
Both filters changed out and room Deconned to <lK DPM.
Subsequent changeouts of filters has occurred and room remains at <lK DPM.
ViKEm II.
G.
Waste Gas 1.
Waste Gas Tank A (WDG-T-1A)
General area <lK DPM. Area essentially complete until tank opened for inspection.
2.
Waste Gas Tank B (WDG-T-1B)
General area <1K DPM. Area essentially complete until tank opened for inspection.
3.
Waste Gas Filter (WDG-F-1)
General area <2K DPM. Area essentially complete.
Filter has not been in use to date and will not need a changeout at this time.
4.
Waste Gas Valve Room Area Deconned to MDA.
II.
H.
Deborating Demineralizer (WDL-K-1A/B)
Area Deconned to FDA.
Essentially complete until resin is transferred.
II.
J.
Miscellaneous Waste Holdup 1.
Miscellaneous Waste Holdu,) Tank (WDL-T-2)
Area remains High Radiation area. Waiting for Desludging tank prior to Decon.
2.
Miscellaneous Waste Holdup Filters (WDL-F-8A/B)
Waiting to changeout filters. Holdup due to broken valve reach rods.
II.
K.
Mezzanine Valve Room Will complete Decon after filter WDL-F-8A/B changeout and Desludge of Miscellaneous Waste Holdup Tank.
Present status <10K DPM.
II.
L.
Concentrated Waste Pump (WDS-P-2) Room Deconned and survey of March 16, 1980 indicated general area <lK DPM with hot spot of 6K DPM. Pump in recent use circulating and transfer of Concentrated Waste rank on March 31, 1980 causing High Radiation area.
Will complete Decon after system flushing.
a
ViKEm II.
M.
Makeup and Purification Valve Area 1.
Corr'idor Deconned to <lK DPM with hot spot of 6K DPM.
Will further Decon after cleaning FHB-281 Makeup and Purification Valve Rooms.
2.
Valve Room No entry to date. Remains High Radiation area.
II.
N.
Annulus Area has not been cleaned or Deconned to date. EL-347 Annulus needs cleaning and Decon prior to commencing EL-305 Annulus.
II.
O.
FHB West Corridor Area cleaned and Deconned to 1K DPM.
II.
P.
Model Room Area being maintained <500 DPM by survey data.
Solidification Batch Tans to be disassembled in near future allowing Decon of this area to
<500 DPM.
II.
Q.
General Area The floor area remains at <500 DPM.
Floor drain strainers and bowls removed. Drain hubs have been cleaned and Deconned. Accessible floor drain headers have been flushed.
Overheads have been cleaned and Deconned. Occasional hot spots appear and are Deconned by survey data, c__
ViKElil EL-328 III.
A.
Concentrated Waste Tank (WDS-T-2)
Survey of February 23, 1980 indicated general area of 2 R/hr. Entry door indicated 200 mr/hr. Tank contents recirculated five days prior to transfer on March 31, 1980 to Miscellaneous Waste Holdup Tank.
Survey of April 30, 1980 indicated smears of 80 mrad and 30K DMP.
Contact reading on drain - 2 R/hr Gamma and 32 Rad /hr Beta. Waist level Dose Rate varies from 12-40 mr/hr. Area will be Deconned in ensuing weeks.
III.
B.
Mix Tank Area Area has been dormant for some period due to other priority areas.
Frequent cleaning and Decon of overheads and area has significantly reduced cross contamination spread. High Dose Rate piping restricts any further Gross Decon in Mix Tank Area.
III.
C.
FHB East Corridor Area cleaned and Deconned and being maintained at approximately 1K DPM.
Bagging and sealing of Core Flood Tank Nitrigen Filters (NM-U-26 and 27) have contained previous contamination spread.
III.
D.
General Area 1.
Floor area being maintained at <500 DPM. Overhead cleaned and Deconned. Coordination with ventilation maintenance has prevented contamination spread.
2.
Accessible floor drain strainers, bowls and hubs have been cleaned, Deconned and flushed. Riser from EL-328 to EL-281 has presented plugging problems in the past due to chemical buildup. Also, riser has indications of leakage at EL-305 and EL-281 ceiling penetrations in concrete.
Investigation presently underway.
ViKEm Service Building IV.
A.
Contaminated Drain Tank Area Area has been cleaned and Deconned to <lK DPM.
Both tanks (WDL-T-llA/B) have had internal inspection for sludge and are in satisfactory condition.
Both filters (WDL-F-7A/B) have been changed out.
IV.
B.
Personnel Access Hatch Area Area cleaned and staged for Containment entry.
IV.
C.
Hot Instrument Shop and Chemistry Lab Both areas be under contamination control by survey data.
IV.
D.
Auxiliary Building Entry Point 2 Area being under contamination control by survey data.
IV.
E.
M-20 Area Sample equipment from Penetration 401 has been Deconned and destaged.
Tent area Deconned to 1K DPM.
Corridor to FHB-281 corridor Deconned to <1K DPM.
ViKEm FilB EL-347 V.
A.
Hydrogen Recombiner Equipment removed from original location and staged for Decon on New and Spent Fuel Transfer Pool Deck Cover. Blower Assembly disassembled and Deconned.
Blower and motor to be replaced. Waiting for further disposition. Original pad Deconned to <1K DPM.
V.
B.
Fuel Cask Pool Cleaned and Deconned to MDA V.
C.
Spent Fuel Storage Pool Cleaned and Deconned to MDA V.
D.
Surge Tank Cleaned and Deconned to MDA V.
E.
Penetration 626 Contamination control being maintained by survey data.
V.
F.
Annulus General area Deconned 1979 to <2K DPM for Fenetration 626. Will complete clean and complete total Decon when 626 Penetration Tent can be removed or entry allowed.
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