ML20033F889
| ML20033F889 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 03/27/1990 |
| From: | Keuter D SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| AGM-NUC-90-074, AGM-NUC-90-74, NUDOCS 9004040036 | |
| Download: ML20033F889 (11) | |
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24.uun SACAAMENTo MUNICIPAL UTILITY DISTRICT D 6201 S Street, PJD. Box 15830. Sacramento CA 95852 1830 (916) 452 3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA AGM/NUC 90-074 I
i March 27, 1990' U. S. Nuclear Regulatory Commission Attn: Document Control Desk Hashington, DC 20555 H
Docket No. 50-312 Rancho Seco Nuclear Generating Station t'
License No. DPR-54 1
EFFLUENTS In NATER MANAGEMENT PROJECT ACTION PLAN 1
Attention:. George Knighton As discussed in our meeting of January 24,'1990, the District has reviewed the Effluents and Hater Management Project Action Plan to determine which items should be completed to address current effluent and water management i
concerns. The action plan was originally developed to address three basic issues i
The Storm Drain and Effluent System Drain design does not e
sufficiently prohibit the unplanned release of liquids containing (albeit in extremely small quantities) hazardous material or radioactivity.
The secondary plant design is inadequate'to manage, with sufficient e
margin (10 CFR 50 App I guidelines), the waste water generated during normal plant operation.
i The secondary plant' design is inadequate to manage the waste water e
generated during plant operation under Steam Generator Tube Leak conditions.
Because of the permanent closure of Rancho Seco, the actions required to address current effluent and water management needs have been reduced significantly. Therefore, the District is closing out the Effluents and Hater Management Project Action Plan. Although the action plan is being closed, u
items determined to be necessary for ensuring proper effluent management will be completed.
b 9004040036 900327 PDR ADOCK 05000312 F
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s RANCHO SECO NUCLEAR GENERATING STATION D 1444o Twin Cities Road, Herald, CA 95638 9799;(209) 333 2935
grr-l tu 0-George Knighton AGM/NUC 90-074 is a copy of the Effluents and Water Management Action Plan, is a description of those items that we intend to complete to address the issues that remain.
These items will be tracked to completion by the. appropriate tracking system (s).
Members of your staff with questions requiring additional information or
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clarification may contact Mark Leinwander at (209) 333-2935, extension 4927.
Sincerel'y,
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Dan
. Keuter R
Assistant General Manager Nuclear Attachments cc w/atch:
J. B. Martin, NRC, Halnut Creek A. D' Angelo NRC, Rancho Seco
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EFFLUENTS & WATER MANAGEMENT PROJECT ACTION PLAN Revision 0 September 28, 1988 w
S Stepheh Melancon, Project Manager Eric Yochheim, Manager, Chemistry W
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j William Kempet, Manager, Nuclear Operations
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RogeVHuebner, Manager, Nuclear Projects
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a EFFLUENTS & WATER MANAGEMENT PROJECT ACTION PIAN p.
5 TABLE OF CONTENTS a.
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r EXECUTIVE
SUMMARY
1.0 INTRODUCTION
2.0 SCOPF.
t 2.1 PROJECT TEAM i
2.2 NUCLEAR ENGINEERING 2.3 MAINTENANCE 2.4 PLANT PERFORMANCE
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l 2.5 OPERATIONS i
2.6 CHEMISTRY l
3.0 SCHEDULES 4.O RESOURCE REQUIREMENTS 5.O PROJECT CONTROLS 6.0 APPENDICES 1
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EXECUTIVE
SUMMARY
Three Action Plans have previously been formulated to alleviate specific issues and concerns associated with " Effluents & Water Management" (E&WM).
Most of the actions specified in the first two action plans have been completed.
The nature of these actions was predominantly remedial and oriented toward alleviating specific concerns.
These actions included procedure and surveillance development, program development, assignment of line organization responsibilities, etc.
The latest Action Plan (May 1988), although'still oriented toward specific concerns, tentatively addressed programmatic concerns and recommended some i
1 major plant modifications.
All of the individual issues and concerns designated in the j
previous action plans and further specified by cognizant Rancho l
Seco personnel (as well as outside agencies), however, can be consolidated into three basic issues:
1.
Current Storm Drain and Effluent System Drain design I
does not sufficiently prohibit the unplanned release of liquids containing (albeit in extremely small quantities) hazardous material or radioactivity.
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The short and near term tasks associated with this project are scheduled for completion within six (outlined in Appehdix I)
The long term modifications (outlined in Appendix II) months.
None of the currently are scheduled for completion in 1990.
projected modifications require plant refueling outage conditions for implementation.
Entry into "Lcos" will likely be required, however, for final tie-in type work on several of the projected tasks.
The total costs for the entire project are presently estimated to The estimated expenditure (actual-to-date be $12,900,000.
l included) for 1988 is $1,800,000.
The remaining $11,100,000 is At this time the slated for 1989 and the first half of 1990.
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major plant modifications anticipated as a result of this project are still in the conceptual stages and the current "Best Guess"
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estimate of $10,000,000 (as indicated in Appendix II) accounts l
for the majority of the estimated $12,900,000 total.
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Current' secondary plant design is inadequate to J
2.
f APP I manage, with sufficient margin (10 CFR 50 the vaste water generated during normal guidelines),
plant operation.
Current secondary plant design is inadequate to manage 3.
the waste water generated during plant operation under Steam Generator Tube Leak conditions.
After reviewing the current status of the E&WM effort, Project f
Management initiated, efforts on.a number of the items identified
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in the previously approved action plans and assumed the coordination respc.7sibilities for those items that were already Current project activities, in consolidated form, in progress.
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are outlined in Table E.1.
(The individual tasks and a brief L
status of each are outlined in Appendix III.)
Although the major E&WM areas of concern are identified, specific issues in addition to those currently being addressed may arise Should in the process of or as a result of project execution.
additional issues arise, they will be investigated and assessed l
as to whether the resolution should be added to the scope of this project.
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3 TABLE E.1 EFFLUENTS & WATER MANAGEMENT TASK OUTLINE TASK DESCRIPTION BUDGET TARGET COMPLETION 1-A Drawing, procedure &
$ 115,000 10/15/88 surveillance program l'
upgrades 1-B Physical component &
S 850,000 2/28/89 system upgrades 1-C Solidification pad
$ 500,000 3/30/89 enclosure bldg.
1-D Tank Fara Upgrade
$ 4,200,000 12/31/89 1-E Hazardous material
$ 1,500,000 not yet determined storage-site upgrade
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2-A Waste water volume
$ 970,000 3/31/89 reduction mods.
4, (short & near term) 2-B Waste water activity
$ 150,000 10/30/88 reduction mod. (90%)
2-C REIMS development
$ 65,000 1/30/89 L
L 3-A Tube Leak Recovery
$ 250,000 12/1/88 Short term (MO-Flow system) 3-B Waste water treatment S 4,300,000 6/30/90 system upgrade Estimated Total
$ 12,900,000 Items 1-A thru l-E address the unplanned offsite release issue.
Items 2-A thru 2-C address short term water management during normal operation.
Items 3-A & 3-B address water management during steam generator tube leak conditions.
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Y l.O INTRODi',C qqg The objectives of this project are 1)
To eliminate (or reduce to an acceptable level) the possibility of unplanned offsite releases of liquids containing hazardous material or radioactivity.
j Specific areas of concern includes Tank Farm Area (potential for non contained spills o
and inconsistency in discharge routing of drains) o RHUT Area (potential for non contained spills)
Solidification Pad (potential for non contained o.
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spills) o Normal Effluent (multiple discharge paths and criteria exist for the same types of liquids) o Non Radioactive Hazardous Materials Storage &
Handling (potential for inadvertent entry into storm drains) p
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To modify current plant design and operating methods to i
adequately manage the waste water generated during normal operations to comply with 10 CFR 50. APP I.
Specific areas of concern include:
I Secondary waste water generation rate (present o
rate is 28-30 gpm vs. 10 gpm for similar plants) o Activity Clean-up "LERTS" (The Liquid Effluent Radwaste Treatment System capacity is very limited and physical arrangement is vuloirable to spills) o condensate Handling Methodology (original plant
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design allowed for rejecting of condensate to the CST - Contaminated secondary has precluded this
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option) i 1
l NOTE:
Current discharge limits are:
i Volume - 20 million gallons per year (mgpy) 3 mr/yr Dose The current projections for year end are 70% of the volume limit and 33% of the dose limit.
Although at first glance these numbers may look quite satisfactory, it is important to consider that since RESTART the plant has run extremely smooth; system perturbations have been almost non-existent.
Even moderate i
perturbations could significantly affect these margins.
P 3)
To modi'fy plant design and operating methods to adequately manage the contaminated waste water resulting from continued operation under SGTR conditions.
Specific areas of concern include:
o Short term plan of action (current SGTR recovery plan does not include waste water handling plan)
Waste water management is limiting factor for o
plant operation (current plant design does not provide for high capacity clean up)
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The near term charter of the Project Team (PT) will include:
~ Coordinating and expediting tasks outlined in Appendix III o
Making further assessments and participating in studies as o
becomes necessary during project execution Execute appropriate closure of action items identified in o
the previous action plans.
Develop consolidated Action Plan after the long term plant o
modifications are formulated l
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2.0 SCOPE 2.1 PROJECT TEAM (PT)
(The project team consists of the project manager and representatives from Chemistry and Systems Engineering who have full time dedication to the project for the remainder of 1988.)
l 2.1.1 Coordination i
L Coordinate and expedite modifications and remedial l
actions already in progress as well as those resulting from the studies and assessments currently in progress.
l Coordinate (and perform) the additional studies and assessments required for near and long term I
modifications to the plant.
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- j-2.1.2 Studies / Assessments l
Participate in the studies / assessments necessary to
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identify options and assist in the development of the conceptual designs for each Design Change Package (DCP) assigned to the project.
2.1.3 Proiect Action Plans Effect appropriate closure of previous action plans.
Develop revisions to the current action plan after long term modification plans are formulated.
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2.1.4 Proiact Manacement Perform' normal project management duties such as budget and schedule monitoring and control.
t 2.2 NUCLEAR ENGINEERING r
t 2.2.1 Studies /concentual Damians Perform walkdowns and conduct studies necessary to identify options and develop conceptual designs for each DCP of the project.
2.2.2 Develoo and Issue DCPs
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Provide in-house or contractor engineering support and L
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management / supervisory support for the development and
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V issuance of all DCPs required for this project in accordance with Nuclear Engineering Procedures and Rancho Seco Administrative Procedures.
This support i
l includes the preparation of DCPs, material l
requisitions, cost estimates and resolution of field installation problems (e.g. Field Problem Reports 4
(FPRs) and Potential Deviations from Quality (PDQs)).
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2.2.3 Proiect closure i
This consists of the engineering effort to close out the engineering activities on the project such as records turnover, design basis document review and draft, calculation reviews and updates, and project closeout and archiving tasks.
2.3 MAINTENANCE (INCLUDING MODIFICATIONS)
The maintenance scope is limited to providing resources for installation of the modifications originated by Huclear Engineering as Design Change Packages under Work orders assigned to this project.
t Maintenance scope chargeable to this project specifically excludes:
preventive maintenance, surveillance support or corrective maintenance resulting from surveillance findings, corrective maintenance, and deficiency-generated work requests.
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t' 2.4 PLANT PERFORMANCE f
The Plant Pa'rformance Department scope includes assignment of adequate System Engineering personnel to support conceptual and detailed design, procurement, receipt and bench testing of Components, planning and scheduling of installation activity, L
coordination with Operations and Maintenance, i
development of Special Test Procedures, performance of the tests, and evaluation of test results, and closecut of project documentation.
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I 2.5 OPERATIONS Plant operations scope includes participation in a consultive role in the conceptual design phase, detailed design phase, the installation phase and the testing phase i
to ensure that the specific needs of the plant are fully understood and are met by the efforts of this project.
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2.6 CHEMISTRY Procedures and Surveillanegg 2.6.1 s
Develop procedures and surveillances as required by the 7
project due to plant modifications and as required for mitigating the consequences of offsite releases.
t 2.6.2 consultation Participate, in an advisory capacity, in the design as well as installation phases to ensure that the needs of the plant are fully understood and met by the efforts of this project.
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l 3.0 SCHEDULE l
A preliminary schedule of major project activities is presented I
in Figure 3.1.
As studies and conceptual designs are completed, more detailed schedules with milestones will be developed and provided in consolidated form in a later revision of this action plan.
4.
FIGURE 3.1 EFFIDENIS & MRHR MANAGEMENT PRlTBCP HIGLIGES SOEDJIE l
1990 1989 1988 l
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O N
D J
F M
A M
J J
A S
O-N D
J F-M A
M J
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l-1 I
Short & Near Term Mods
- O (Engr & Implementation)
Solidificatica Pxl Encl. Bldg.
- O Tank Farm t$ grade
- o
- l * * * * * * * * * * * * * * *** * ** l * * * ********************(Implementation)
(Study)
(Design Engr.)
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Waste Water Tiem^u==d. Systen 1$ grade
- . :. :. : :. : : : :. :. : : : : : : :. : : ::************************o
- * *********** l ************************ l ******: :(Implementation)
(Study)
(Design Digr.)
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l Hazardous Material Site t h tads
- o
- l*****************************lementation)
(Study)
(Dv3r & Imp b
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4.0 R_ESOURCE REOUIREMENTS 4.1 BUDGET The total costs for the entire project are presently estimated to be $12,900,000.
The estimated expenditure for 1988 is $1,800,000.
This number, although still an estimate, reflects expenditures to date plus those anticipated for short and near term modifications currently in progress.
Monies for Tank Farm f
Upgrade, Waste Water Treatment and Hazardous Material Site Upgrade studies are included in this amount.
The remaining $11,100,000 is slated for 1989 and the first half of 1990 to complete work currently in progress and for the major plant modifications anticipated as a result of the studies.
At this time, the major plant modifications expected as a result of this project are still in the conceptual stages and the "Best Guess" cost estimate is as 1
follows:
Tank Farm Upgrade
$4,200,000 Waste Water Treatment Facility
$4,300,000 Misc. Hazardous Material Site Clean-up
$1.500.000 Total
$10,000,000 i
4' 4.2 MANPOWER l
The majority of the manpower requirements for the next six months will be from Nuclear Engineering and the Project Team.
Once the detailed designs are completed and in the field for implementation the emphasis will shift from Nuclear Engineering to Modifications.
l An organization chart showing the designated project leads and departmont functions is presented in Figure 4.1..
Although not shown on the chart, adequate office space for the project team (project island), dedicated clerical l
support and part time engineering technician support are mandatory to the effective execution of the project.
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FWOJECT M STEVR MELANCON 3o o
ACTION PLAN o
RESOURCE MANAGEMENT h, e m
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PROJECT ACTIVITY COORDINATION FRED EELLIR 4534E.177 LIC M IIIB DAN LEGggg RICHARD MANHEIMER o
QC/QC SUPPORT o
LIC. SUPPORT l
CRENISTRY ENGINEERING STETag N
N TI M PETER MURPHY JOHN ATWELL JERRY RUZALA PHIL TRRRY CHUCK ROWLAND AL FRASER RUSS CUMERFORD o
PROJECT TEAM o
CONCEPTUAL DESIGNS o
PROJECT TEAM o
MODIFICATIONS o CONSULTATION SUPPORT SUPPORT o
PROCEDURES &
o DETAILED DESIGNS o
PROBLEM RESOLUTION o
TESTING SUPPORT o TESTING SUPPORT SURVEILLANCES o
CONSULTATION o
FIELD SUPPORT o
STP DEVELOPMENT PERFORMANCE &
CLOSURE
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5.O E ET.ECT CONTROLS Project Control tools to be used will include the Aceion Plan, issues of ProjecP Task project schedules (P-2), project budget, Frequent review of Approvals to responsible departments.
progress vs. schedule and expenditure vs. budget will be performed by Project Management.
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Project Management assumes responsibility for execution of the project in accordance with the Plan and commits to periodic reforecast of resource requirements as the project develops.
Departments responsible for task execution will be held accountable for deliverables according to the commitments made using the tasking process.
(Where scope is not fully developed, allowance estimates will be provided until the scope is sufficiently developed to enable its estimation with high confidence.)
Finally, a contingency fund will be utilized to allow for the This reserve uncertainties expected during project execution.
will be distributed by the PM when minor perturbations to the Action Plan are encountered.
The objective of the reserve is to minimize the impact of unanticipated resource requirements on the total Nuclear Budget for the next year.
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e APPENDIX I
SHORT & NEAR TERM ACTIVITIES TARGETED COMPLETION DESCRIPTION OF ACTIVITY 10/15/84 Storm & Eff. Drn Dwg Update Proc & Sury. Prga Development 10/15/88 Procedure Development (Ops)
Complete 11/30/88 Training Program Basin Discharge Valves 1/31/89 Effluent Inst. Upgrade 2/28/89 Aux Sta Sump Pump Upgrade 3/31/89 10/30/88 **f*
MSR Drain Reroute 2/28/89 Hypochlorite system Upgrade Solidification Pad Enclosure 3/30/89 j
Reroute R-15016 sample flow 12/15/88
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Reroute AE sample flow 12/15/88 l
Reroute AE-77609 discharge 3/30/89 Recycle polish sapi discharge 3/30/89 l
Recycle cold lab samples 3/30/89 t
11/15/88 q,
Dog Bone & cond pump seal reroute Reroute AFW mini flow to CST 12/15/88 CST Overflow Mod 2/28/89 1
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APPENDIX I (cont) i 1
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SHORT & NEAR TERM ACTIVITIES l
t TARGETED COMPLETION j
DESCRIPTION OF ACTIVITY i
i 10/30/88 011 Skimmer Wodifications 10/30/88 j
Polisher sluice water domins t
1/30/89 REIMS Development
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Analysis indicates a 90% reduction in RNUT activity
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i APPENDIX II i
LONG TERM MODIFICATIONS I
t The long term modifications outlined below are still in the t
conceptual design stages.
The cost estimates given are "Best l
Guess" and the completion dates specified are PM targets.
i DESCRIPTION EST. COST COMPLETION j
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Tank Farm Upgrade
$4,200,000 13/<4/89 Waste Water Treatment Facility
$4,300,000 6/30/90 i
f Hazardous Mtl Sito Upgrade
$1,500,000 12/31/89 TOTAL
$ 10,000,000 h
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APEDOIX III GERENT EETIDENTS & MTER MIMPG7ENT *DGES ONUENT SDGUS IENEFIT i
IESGIPTION OF ACTIVITY 1.0 Urolanned Offsite Release Issue Stona & Eff. Drain Dwg. Verification Risk partrtion (m)
In prugtess with espected caipletion of 10/15/s8.
(Civil Bigt.)
l In progress with
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Procedure & Suveillance Progrm ctmpletion of 10/15/s6.
(M M) t Completed (OPS)
RR Procedure Development In progress with esspected RR Training Progrm completion of 11/30/ss.
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In progress with eispec' test m
Basin Discharge Valve 15 grade cargaletion of 1/31/89.
Omsc. air.)
In progrees with aparted Effluent Instnmentation Upgrade RR ocupletion of 2/2s/s9.
(sec. & Isc w.)
i In progress with empacted m
Aux steam sue as, upgrade enzipletion of 3/31/89.
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APPDOIX III QEEENT EFFIDENIG & WUTR PANRGUENT WJG IESOUPTION OF ACTIVITY IE3EFIT GEEENT SDGUS 1.0 Unplamed Offsite Ml==== Issue PCR Drain Heruute RR Physioni modification work in pregnes with Wart completion of 10/30/88.
(PF/DCD)
Solidification Pad Ehclosure Bldg.
RR CSR (with speas) going out for bids. Targeted completion date is 3/30/89. (Civil Engr.)
Tank Fana Uppade RR Study is emmamitially emplete. Detalles ossip supc. scmarmoed e cogin by 11/14/88.
(PF/Mac ag)
Misc Hazardous Material Site Upgrade ER Study to======
m d __J and asplicability to this r-M is slated to boyin W 15/8s.
(Pr/ouen) i Hypodilorite system Upgrade ER Material aogaisition in
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Progrees. Target empletion 2/2s/89 (PF/ME) i i
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.9 APMMDIX III QERENT DTIDENIS & 15GTR IWMRGBENT DSFS 1
DESCRIPTION OF ACTIVITY IDEFIT QEEENT SDGUS 200 Water ihm-J. Tenae Heroute R-15016 sample f1w Voltane P=rh=+1cn (VR)
In progrees with espected egletion of 12/15/98.
( 1 PEPY )
(mac B y.)
Retoute AE circ water sample flw VR (0.5 IEPf)
In progrees with espected coupletite of 12/15/98.
(Nuc BUE) i 4
Retoute AE-77609 discharge VR (0.5 PEGY)
Effort presaritly ma initi pending IE and rpicrtizing. (Pr/IE) l Heroute polisher sample discharges VR (3 PEPT)
Effort presently on hold pending I&C Bupt mod reprioritizing. (Pr/IE)
Recycle Cold Iab samples VR (2 PCPf)
Effort presently on hold pending I&C Bupe and reprioritizing. (Pr/7en Dog Bone Seals & (bnd Seals Heroute VR (5 PEPf)
In plant modification in progress with espected coupletion of 11/15/88.
(Pr/IEDS)
Beroute AFW mini flow to CSr Water Management (IGE)
In progrees with _,--$- :
0 5 stion by 12/15/88.
APPDE)IX III QEEENT EFTIDENTS in 15GER 7GNRGDENT *IRSES DESCRIPTION OF ACTIVIIT N
2.0 Water Marww=prit Issue G T overflow rezuute W
Beirq evaluated in 11#
of intended Tarilt Farm W. (Pf/IE)
Polisher sluice water skemirs Activity Prkr+irm (AR)
Contract with Pac-ftac is antTently beirq amended to incluse endnermii Egect delivery by 10/30/88. (Pf/Rhete)
Waste water treatment systen wade M
Stnady to be perfonood its con)sictiors witti long tems j
Tee imelt recovery plan daidt is edustaled to begin by 10/15/88.
REDES Development M
In proyees with ar*i% dad egletion by 1/30/89. (Osam) oil skinner irstallation m
In progrees with completion by 10/30/88.
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0 ATTACHMENT k
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TASK:
Oil Removal Equipment
References:
ECN R-3053 LRSL 4140 L
f PURPOSE:
This modification provides the means to remove oil from the condensate pit sump and the contaminated Regenerant Holdup Tanks (RHUTs) to facilitate l
processing the wastewater for radioactivity.
DESCRIPTION:
f Permanent oil separation equipment will be installed on both RHUTs and the condensate pit sump to remove unwanted oil.
STATUS:
The design is complete.
The equipment has been purchased, received, and installed.
Preliminary testing has been performed on the condensate pit sump segment.
The testing was to be completed and the system turned over l
to Operations by November 1989.
The original testing indicated some problems with the system and more work had to be done.
Currently, STP-1233 is being performed on the system to complete testing.
The system is expected to be fully functional by the end of May 1990.
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ATTACHMENT (Continued) i
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TASt::
Basin Discharge Valve Upgrade (CDS-026 and 027) r
References:
DCP R88-0107 i
i LRSL 4255 l
HR 162842 A/B HR 162893 A/B/C/D l
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PURPOSE:
Eliminate risk of uncontrolled leakage.
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DESCRIPTION:
L Butterfly valves CDS-026 and CDS-027, which can be used to gravity drain the retention basins offsite to the plant effluent, would be permanently l
welded closed.
STATUS:
Previously, we were not going to complete this task because of plant closure.
However, upon further review, the task will be completed.
The engineering work is expected to be performed during the first quarter of 1991 with actual construction work being performed in the second and third quarter of 1991.
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r ATTACHMENT (Continued) e a
TASK:
Tank Farm Sump Pump Upgrade l
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References:
DCP 68-0033; subdivided into two packages:
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SUB DCP AA - Vacuum Line SUB DCP AB - Refurbish Sumps and Sump Pumps AC PD0 89-0339 LRSL 4245 STP 1202 g
PURPOSE:
Eliminate manpower required to pump fluids and reduce wastewater volumes.
DESCRIPTION:
DCP 88-0033, sub DCP AA allows the vacuum dragging of auxiliary steam traps to the condenser.
Sub DCP AB allows for the installation of pumps in the tank farm to automatically pump wastewater to.the RHUTs for processing.
STATUS:
The vacuum line section of this DCP will not be done.
The r.imo pumps have already been replaced but they failed due to the high temps stJre of the sump water.. Currently, the sumps are pumped to the RHUTs using a portable pump and are usually only necessary during rainstorms.
To facilitate automatic pumping of the sumps, work is planned to repair the sump pumps j
during the third and fourth quarter of 1990.
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ATTACHMENT (Continued) 4 t
TAS'(:
Solidification Pad Enclosure Building
References:
DCP R-3?O9A LRSL 3389 1
IToPOSE:
l Reduce risk of uncontrolled releases during spent resin solidification; expand contamination control, change room, and clothes areas, i
DESCRIPTION:
A building is to be constructed to house the spent resin solidification area and to store contamination control clothing, i
STATUS:
The building enclosure has been erected and is functionally able to support solidification of resin and evaporator bottoms.
Installation of i
sprinkler systems and HVAC is in progress with estimated completion by June 1990.
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TASK:
Hypochlorite System Upgrade
References:
DCP 88-0046 LRSL 4282 HR 144626 THOD 89-052 i
PURPOSE:
Provides for redundancy to present sewage effluent chlorination system.
i DESCRIPTMN:
]
A skid-mounted liquid chlorination system using hypochlorite will be j
I installed as a backup to the existing gaseous chlorine system.
STATUS:
The temporary design change is complete. A hypochlorite skid has been installed via Temporary Hodification 89-052. This skid will be modified to provide for automatic feed of hypochlorite to the sewer plant which j
will provide the redundancy needed. A containment similar to the existing gas addition system will be constructed. Design is expected to be complete by April 1990.
Implementation should be complete by the end of 1990.
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TASK:-
RHUT Telltale Drain i
References:
DCP 88-0106 LRSL 4297 HR 162877/A CCTS T890515008 PURPOSE:
To install a leakage detection system on the RHUTs.
DESCRIPTION:
Each RHUT has a rubber liner.
This task involves the installation of a drain between the liner and the tank wall to determine leakage.
STATUS:
The design is complete.
The materials are on order.
Construction has not yet started.
The B RHUT is scheduled for completion during the second quarter of 1990.
The A RHUT is scheduled for completion during the second quarter of 1991.
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9 ATTACHMENT (Continued) 1ASK:
Effluent flow Instrumentation Upgrade i
References:
DCP R88-0062; subdivided into two packages:
SUB DCP AA - Culvert Rework SUB DCP BB for Instrumentation Upgrades PD0 82-0459,1586,1896 i
LRSL 4256 CCTS T881020002 PURPOSE:
Improve accuracy of liquid effluent flow rate measurements at the plant ef fluent discharge fiume.
DESCRIPTION:
This task modifies the effluent discharge weir, discharge culverts, flow instrumentation and radiation monitoring instrumentation.
STATUS:
The design is complete and construction materials are on site. A l
re-evaluation has been done and the DCP will be completed.
Per letter AGM/NUC 90-019, which provided an update of commitments to the NRC, the DCP will be modified to perform only appropriate portions of the DCP.
Most likely, this modification of the DCP will leave out the culvert rework.
This is scheduled to be completed by December 30, 1990.
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