ML20214W755
| ML20214W755 | |
| Person / Time | |
|---|---|
| Site: | Framatome ANP Richland |
| Issue date: | 05/18/1987 |
| From: | Malody C SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER |
| To: | Horn M NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20214W758 | List: |
| References | |
| 28230, NUDOCS 8706160170 | |
| Download: ML20214W755 (15) | |
Text
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I4 lesTUl5i T C 39if-55 3-MI ADVANCEDNUCLEARFUELSCORPORATION 2101 NORN RAPIDS ROAD. PO box 130, RICHLAND, WA 993524130 '
' CORPORATELICENSING (509) 3758100 TELEX: 152878 May 18,1987 7
/o RECElVED 3,
2 U.S. Nuclear Regulatory Commission MAY26 IS07 k -
Attention: Ms. Merri Horn Fuel Cycle Safety Branch (i
"$$$$g7RYU Division of Fuel Cycle, Medical, Academic
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. and Commercial Use Safety
<4 Washington, DC 20555' 4
g License No. SNM-1227 Docket No. 70-1257
Dear Ms. Horn:
This is our response to your comment I I of April 6,1987 concerning the incinerator which was not included in our earlier response to the rest of your comment package.
Eight copies of our response are included and in addition six copies of e ertain revised pages in Part 11 of our license application describing the incinerat(r operations are included for replacement of those pages previously included in our license application. The information included in this response has been expanded to include additional information orally' requested by G.H. Bidinger.
Sincerely,.
C. W. Molody, Mana, Corporate Licensing CWM:jrs
% 4720 Enclosure As Stated DMG D
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RESPONSE TO INCINERATOR QUESTIONS ADVANCE NUCLEAR FUELS CORPORATION DOCKET NO. 70-1257 Comment 1-Discuss potential accident scenario and the potential impact.
Response
The incinerator is installed in a facility which was originally designed for plutonium processing and as such is more resistant, by design, to natural forces such as earthquake, wind, etc., than any other process building on site, it is our belief that the design and operation of the incinerator will be such that there will be no substantial impact on the safety of the workers, the public or the environment.
The facility contains general safety features similar to others on site with respect to ventilation, fire detection etc. and in addition the process controls include many automatic response features to mitigate what are considered the more probably adverse safety events.
A brief description of the facility, the planned operation and safety features are presented below.
Incinerator Operation General Advanced Nuclear Fuels Corporation has a solid waste incinerator facility under construction which is scheduled to be ready for operation in August 1987. Approval for construction was received from the NRC by letter dated November 26, 1985.
Approval for construction and operation by the local Air Pollution Control Authority was received October 20, 1986. Feed to the incinerator will be combustible waste generated in plant facilities and will consist primarily of plastic, wood and paper.
A small amount of potentially contaminated lubricating oils may also be inciner-ated. At this time there is no plan to incinerate any hazardous material although the incinerator has some capabilities in that area.
Facility Description The incinerator will be located in the SF Building in the space previously occupied by the mixed oxide facility. (See XN-607,349) The area has been modified by the addition of an airlock waste drum storage area and a new HVAC system separate from the remainder of the SF Building.
The incinerator itself also will have a dedicated process offgas system. The room HVAC system is described in section 3.2.1 of the license application and the incinerator of fgas system is described in section 10.4.5.3.
Each system has its' own set of final filters and isokinetic exhaust sampling system.
It is believed that neither system will measurably increase total site. radioactive emissions. Other services existing in the building will be extended to service the SWUR facility including the fire alarm system, air sampling system and criticality alarm system.
Operation Currently generated waste will be sorted at point of origin with combustible waste going to cardboard boxes and noncombustible waste going to drums.
The boxed combustible waste can therefore be assayed and fed directly to the incinerator and the drummed noncombustible waste assayed and sent to o disposal site. The waste currently stored in drums is assayed but will have to be sorted prior to further processing.
The drummed waste will be brought from the storage yard to the air lock queing area (see SK-J-156 for equipment arrangement).
They will be moved from the queing area vio a conveyor to a barrel dump hood. The drum contents will be sorted inside o ventilated hood with the combustible waste being boxed for feed to the incinerator and the noncombustible being drummed for disposal by burial. The drummed, noncombustible waste is assayed, packaged for transportation and disposal and placed in log storage to await disposal.
The ash will be loaded out from the incinerator ash load out hood into 55 gallon drums and assayed. Based upon the assay and the economics of recovery the ash will either be stored and scheduled for recovery or scheduled for disposal.
The Washington low level radioactive waste disposal site requires ash to be solidified prior to disposal. The ash will therefore be solidified either directly from storage or following leaching if product recovery is conducted.
Radiological Safety The drummed waste is opened inside a containment hood for sorting. The waste is not allowed to leave the containment hood unless it is contained again within a box, drum, plastic bag, etc. The incinerator ash is handled the some way in that the food out operation is a hooded operations. The system has been engineered to exclude the need for respiratory protection during any port of the normal operation.
Air samples of the working environment will be included into the overall air sampling program.
All air will be exhausted through at least one stage of HEPA filters and will be continuously sampled offer filtration and prior to discharge via o stack on the building roof.
The incinerator operation will be included in our ALARA program. Initially the internal and external exposures of operating personnel assigned to the incinerator will be tracked separately from those assigned to other operations until it is determined there are no significant problems.
Criticality Safety All containers of waste are assigned a uranium value os they leave the various facilities based upon nondestructive assay methods as a part of our accountability program.
The incinerator will be operated on batch control. A continuous inven-tory of the content of the incinerator will be maintained which will be the sum of the feed material assays in minus the sum of the ash removal assays, if the incinerator inventory exceeds the maximum batch size, it will shutdown and be cleaned. out and inventories reconciled.
The drums of product ash will be controlled by spacing as necessary.
I Operational Safety
- The incinerator hos' been engineered to detect and correct or shutdown whenever j
events occur which have a strong safety implication. A table, " Automatic Response to Abnormalities" is attached which lists various events which generate on outo-motic response and lists the response. Along with the table is o list of definitions of the various programmed actions and on example of how to use the table and definitions to determine how a particular event will be automatically handled.
The three example events are Loss of Power, Loss of Process Air and o Feeder Fire.
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4 ATTACHMENT AUTOMATIC RESPONSES TO ABNORMALITIES O
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AUTOMATIC RESPONSE TO ABNORMALITIES ENERG.
INCIN-FRRER j
EEED ERMOR DERG.
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N AIAM IOODUP SMJIDCIM QUENCH RBIE M
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Primary Chamber Tauparature i
Im X
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High X
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Extrenaly High X
X X
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Secondary Chamber i
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X High X
X Extremely High X
X X
3.
n=hwation Air Pressure I m X
X 4.
Primary Chamber Pressure Hi@
X X
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Im Scrub Solution If!
X X
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Hi@ Scrub Soltt.icn pH X
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Hi@ Scrub Filter Differential X.
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High Scrub Solution Cooler X
X Discharge T# Lu.
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Im Quench Weir F1m X
X t
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Extremely Im Quench X
X X
l, Weir Flw 11.
Im Quench Spray Flw X
X i
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Im Venturi Scrub Solution X
X i
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Im Packed Column Solution X
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Im Shroud Air Flw X
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Primary Chamber Burner Flamet X
X X
Out 1
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1 Automatically switches to sh a3r filter.
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AUTOMATIC RESPONSE TO ABNORMALITIES ENESG.
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N2 AIMOE591PIY AIARN IfX X K7F SIEJID0lW QUENCH REGE M
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Secondary Cha=har Burner Flame X
X X
Out'
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Izzt Nib.vyma Pressure, #
X X
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Feeder Fire X
X X
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Izzt Prmama Water Pressure X
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Izar Process Air Pr*mant/
X X
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Ioss of Power X
- X X
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Quench Colturt T.ignid. Level f
-e Irnt X
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'Hi@t X
X X
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Packed Column T4t=>id Invel i
Im X
X
-X High X
X 24.
Isnt Scrub Solution Pruwa,anu 3
Im X
X Extremely Im X
X X-2 Shutdown exhauster will switd1 to energency power.
Control system will switdt to amargency power.
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Scrub solution system will trip to efe valving position.
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The'offgas heater will de-energize.
,1 The hydraulic systaa pump will de-energize - wnneilator sized to store sufficient pressure to ocuplete cycle..
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3 Autanatically switdes to standby pump.
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AUTOMATIC RESPONSE TO ABNORMALITIES DERG.
INCIN-EEE0ER FEED ERA'IOR DERG.
N2 AINCRMAITlY AIARN IOGDUP SIRTID06M OUDKH RJRGE OIHER 25.
Quencti Cblumn Outlet Temperature High X
X Extremely High X
X X
X 26.
Packed Column Temperature X
X Inlet High 27.
.Offgas Filter Differential Pressure I m Primary X
X X
High Primary X
X Im Secondary X
X X
High Secondary X
X 28.
Offgas Heater Outlet Tempera-ture High X
X 29.
Offgas Heater Differential i
Temperature Im X
X High X
30.
Offgas Heater Sheath Temperature High X
31.
Packed Colum Differential Pressure i
High X
32.
P m a Offgas Flow Im X
X M@
X 33.
Imer Ash Gate Open X
Open Time Delay X
Close Time Delay X
34.
Upper Ash Gate Open X
j Open Time Delay X
Close Time Delay X
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AUTOMATIC RESPONSE TO ABNORMALITIES EMERG.
INCIN-FEEEER FEED ERA'IOR ENERG.
N2 AINORMAIJTY AIARM I/X3 DUP SH7IDOW QUDKH RJRGE OIHER 35.
Ash Knife Gate Valve X
Close Thea Delay X
Open Time Delay X
36.
Hydraulic Pressure Iow X
X 37.
Iow Fwpaim Pressure X
X 38.
Secondary Omahav 02 Iow X
'High X
39.
Packed Column Liquid Outlet X
J Tenperature High 40.
Iow Venturi Scphhar Differen-X tial Pressure 41.
Sung Imel High X
42.
Feed Ram Extend Time Delay X
X i
Forward Time Delay
.X X
L*aWiate Retract X
X Time Delay.
Full Retract Time Delay X'
X 43.-
Ash Plow Extend Time Delay X
X Retract Time Delay X
X 44.
Fire Door Open Time Delay X
X i
Close Time Delay X
X
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E DEFINITION OF: HEADINGS AUTOMATIC RESPONSE TO ABNORMALITIES
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FEED LOCKOUT RAM Feeder
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, i Upon activation of the feed -lockout sequence, the current cycle, if in -
1 progress, continues to completion.
Additional. feeding is automatically
. prevented.
Liquid Organic injection I
Upon activation of the feed lockout sequence, the injection of liquid organic is automatically stopped.
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INCINERATOR EMERGENCY SHUTDOWN SEQUENCE
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The RAM ; feeder sequence-is completed, t en locked out to. prevent further feeding of solid waste to the incinerator..
b..
The liquid organic injection valve is closed to prevent further feeding of organic liquid.
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c.
The primary and secondary ' chamber burners are, shut off..
4 d.
The combustion air blower-is deenergize', and the combustion and d
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under-fire air-dampers are closed.
The shroud air bypass. is opened to maintain cooling.-
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Nitrogen purge of the primary chamber-is initiated.
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The Venturi scrubber valve is opened.
h.
The emergency quench water flow is initiated.
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Steam injection volve is closed.
j.
The main process offgas exhauster is shut off, :and the shutdown exhauster is activated to maintain a negative pressure in-the primary -
chamber.
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The incinerator is allowed to ' cool naturally until cleanout can be performed or the system is restarted.
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EMERGENCY GUENCH Upon activation of the emergency quench, the normally open process water solenoid' valve is deenergized initiating' water flow to the quench column weir and sprays to assure cooling of the incinerator offgas.
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'4.
INCINERATOR NITROGEN PURGE Upon activation of the incinerator nitrogen purge, a normally closed solenoid
- valve is energized to initiate nitrogen flow to flood the primary chamber with nitrogen.
5.
FEEDER NITROGEN PURGE Upon activation of the feeder nitrogen purge, a normally closed solenoid volve is energized to initiate nitrogen flow to flood the feed hopper section of the RAM feeder.
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~ EXAMPLES OF AUTOMATIC RESPONSES TO INCIDENTS 4
' Loss of-Normal Power -
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' A loss of normal power to the incinerato'r facility will initiate a feed system -
lockout to prevent further feeding of-the incinerator: and the. emergency" shutdown
- will-- be 'octivated. Emergency power will automatically be supplied to the shutdown
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exhauster and control ' instrumentation.~ The scrub solution pumps will trip,' scrub flow will stop and volving will automatically switch to safe volve positions. The emergency quench system will be activated to maintain cooling of the incinerator offgas.
Loss of Process Air Loss of process air is detected by activation of a pressure switch in. the supply line. Upon activation, the feed system is automatically locked out:and the.
emergency shutdown is activated. Air operated valves fail to their safe positions.
Feeder Line t
l The feed system is automated to retract the feed rom-to just.outside the inciner-ator guillotine door, close the guillotine door and inspect for ' fire-using o flore scanner.
If a flame is detected, the feed hopper is flooded-with nitrogen to :
quench the fire. Further ' feeding is prevented until the fire is out.
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