ML19246B051
| ML19246B051 | |
| Person / Time | |
|---|---|
| Issue date: | 06/30/1973 |
| From: | NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| References | |
| REGGD-03.010, REGGD-3.010, NUDOCS 7907110280 | |
| Download: ML19246B051 (3) | |
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i,7 DIRECTORATE OF REGULATORY STA'iDARDS M( 5 O REGULATORY GUIDE 3.10 LIQUID WASTE TREATMENT SYSTEM DESIGN GUIDE FOR PLUTCNIUM PROCESSING AND FUEL FABRICATION PLANTS A. INTRODUCTION C. REGULATORY POSITION Secnon 70 22. " Contents of Apphcations." of 10 Prior to commen cement of consti uc tion of a CFR Part 70. "Special Nuclear Material," requires each plutomum processmg and fuel f abricanon plant, the apphcant for a license to possess and use special nuclear Commtssit n should be provided with sufhcient matenal in a plutonium processing and fuel fabrication information to evaluate whether satisfactory pronsions plant, as defined in 70A(r). to submit in addition to have been made by the applicant for the treatment of the other information required by @ 70.22, a desenption liquid radioactive wastes.
and safety assessment of the design bases of equipment and facihnes which will be used by the applicaat for the 1.
Information to be Submitted treatment of radioactive hquti waste. Tlus submittal in order to provide sufficient in formanon. a should show that the selected process is capable af sub rm ttal to the Commission should include, as a reducing the radiologicai hazard of waste to a level as minimum, the followmg low as practicable in accordance with 10 CFR Part 20 a.
A desenption of the hquid waste to be and that the design bases of the sy stem components and generated, the proposed liquid w aste treatment system quab y assurance program prcvide reasonable assurance mcluding the specific proce ss step, the imtial and l
of protection agamst natural phenomena and the planned ultimate capacity and a descnption of the consequences of potential accidents as required by Part physical and chemical form of the final wastes.
70 This guide desenbes enFmeenng guidelines for design b.
Plan and elevation drawings of the hquid waste of puncipal components of the radnactive hquid waste treatment process area showing locatior. of equipment treatment sy secm acceptable to the Regulatory staff..
including ventilation and filtratior systems. glove bmes and hoods, shieldmg, monitortng and signal systems.
B. DISCUSSION fire. fighting equipment, tanks, and drains; c.
Liquid waste sys tem process flow diagums Oper ation of plu t oniu m processing and fuel indicating planned material flow. the q ua ntit y of fabncation plant s may include a vanety of scrap matenals to be used in each process step and the pracess processes, processmg equipment, and techniques to conditions recoser the plutonium content of all but low-level scrap d.
Prehminary specification sheets of the hquid generated m manufactunng operations. In most cases, waste system which detail materials of corstruction.
the hquid waste s from these scrap processes and capacities, and capabilities of system componento.
e.
A discuss:on of the design bases of the hquid contamtnated liquids from other plant areas are treated by a radioactive liquid waste treatment system. Since waste system which justifies selection of the proccss and this is the last treatment step prior to the release of engineering used in lieu of other accepted engmeermg waste materials from the facdity, carefd selection of the and treatment practices and wluch demonstrates that the methods of t reat men t and processmg components process or processes selected and methods of operaoun should be made not only to confine radioactive material to be used meet the as low as practicable entenon; and under normal and credible accident conditions but to f.
A safety analysis of all engineenng, pn(essing, f waste materials to the lowest or production methods presented in a manner wluch will reduce the radioactivity o practicable level.
permit an evaluation by the Commission.
USAEC REGULATORY GUIDES Copam of pes shes pkese wwy be adwo. red by recparte mdwreting the deve. ore
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Design Guidelines (3) Sh2ppmg cents aers appoved by the DOT Reference mil be made to the foucwing guidelines fot the shipmer.t of idid waste contaminated with by the Regulat ory sta ff in de termining whether plutonium shodd be used for coitection of solid waste satafactory provisions have been made by a licertie materials pcoduced in the liquid wute treatment system apphcant for treatment of radioactive wastes to ebminate the necenaty of repckagmg prior to shipment to a hcensed burial ground.
a General Design Guidehnes (4) Drain systems for storm water and samtary (I) The liquid waste system, its components sew age shoutd be separat e from contaminated waste and required supporting services shculd be capable of d r ain sy stems la undry facibties and pe rsonnel handhng the expected volurr.c of potentially radioactm decontamination fnilitica shwJd be & signed so that waste generated durmg normal plant waticos and effluents wi!] be sent to the radioactive liquid waste under credible emergncy conditions resulting from treatment rystem w+ cn contammated with rad;oactivity.
miernal accidents or natural phenomena.
(5) Indvidual lmes r&dd be ured for each
- 42) The sy s tem de ngn should provide for wute stream fed to the centra! cdlection tankf s) where diversity of components required to netessary to pevent chemical reactian or mtroduction r adu nd a rn y or prevent release of radioactive materials to the of contaminants such a comriexmg agents which codd e nvuonmen t or n eded for the safe eperation of the interfere with wante decontanun.stion and to permit hquid waste system.
determination of flows and mmitoring of wute streams (3) Au components of the liquid wute system frcm each source area.
should be designed for safe shutdown during normal (6) The tse ot' trap m radusactive bquid waste oper, tion or under emergncy conditions Provisions for lines shodd be avmded and the pipng should be emerpency power should be included for cntical procen designed to rmnimae entrapnent and buildup of sohds m m ponen t s.
In the ryst-m.
(4) Tank and piping systems used for liquid (7) Measurement capability should be provided
- ss t e handitng and treat rnent should be of welded to determine the vdume and radioactivity of wutes fed construction to the fullest extent practicable.
to the coUection tank (s). The measurement devices (5) Tank and ppng systems used for bquid shodd be provided with recorden, indicators, and waste handhng and trestment should be designed to take alarms. App opriate detectors should be used to meuurt advwtage of gravity flow to reduce the potential for radioact!vity.
contamination associated with pum;dng and (8) Wate collection system pipe and drain preuurtiation.
lines should be taged, labeled or painted in a manner (6) The ares m which liquid radicactive waste which permita easy identification.
is treated abould be tsolated from product 6on, loading.
(9) Consideration should be given to providmg cerage and support facilities by compartmentalization at least two codection tanks to achieve a capabt!ity for and accru controls to reduce the potential for cross segregating higher level waste materials. The collection con ta m na tion.
tank (s) should be of stairJesa steel construction and (7) Cleanap systems should be provided which designed to prevent nuclear criticahty.
are designeu to contain safely water couected from (10)Bypasaes whidt would permit waste firefighting actrvities and provide for retrievability of strearns to be routed around collet ion tankf ) should be r a dioactive liquids and solid s for cleanup and avoide u.
decontamination through the scrap recovery and/or waste treatment system (s)-
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Weste Treatment System Gddelines (H) TI-design of the radioactive wut system (1) The wute treatment system should include should anure that acci ntal criticahty will occur means (sobdification, etsporation, flocculation. or other under normal operating c ndations or under ar y dible proccu) for converuon of radioactrve wute to hquid accident condition.
and/or solid forms suitable for disposal (2) The radjonctive liquiu w a ste t r eat me rit b.
Cdlection System Guidelines ryitem should be designed to adtkye a decontanunation (1) Uguid conection systems may consist of factor for each radionuclide suffbent to reduce total unk and container collection systems or drain line and radioactivity of normal operational liquid waste to an central conection tankage systems or a cor6ination of acceptable release level on a "once through" treatment both buts. Provtskris should be made for recirculation for (2) M s t erials used m the liquid wa ste further decontamination when radioactivity is above an coll cnon system should be capab'e of safely handung acceptable release level.
waste to be collected. Containers used in a sink and (3) Provisions shotJd be made to adjust Iquid con tainer system should be constructed of durable wute characteristics prior to treatment to minimize materials. All components of the system expected to be adverse chemical react]ons in the treatment system,i.e.,
in contact with strong acids or caustics should be
.mxiotn gu evolut6on or explosive mixtures. If chemical resistant, e g., lined with suitable synthetic hazards cannot be eliminated, they should be controlled corrosion resin materials or stamless steels.
and monitorted with suitable detectors and alarms.
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Radmactne hqu d waste treatment processes should be (7) The syacm should be designed to present
.uch.n to mmimne the cominghng of r9utonium with discharging of bquid from the quarantine or holdup
.omhushble w nte tank.ge to the plant effluent dram line. Proviuons (4) fhere should be no bypasses or drains m the should oc made so that liquids to be transferred to a
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iadiontive liqmd waste treatment system by which storage tank can be analyzed pr'~r to t ansfer w asic may i n a d ver tenlly urcumve nt treatment (8) l'se of mterlockmg of systerm n preferred
( quipmen t (omponents or be rderssed direttly to the ta one.wy a nk sakes to prevent nudental iransfei c ovuonmeru from one 1:nk to another
(%) All hquid effluents f ron the radioactive (9) Analy tical equipment should be prouded hquid wete treatment sptem should be collected m a at the fadl4 to p operly determine the radiontmty of quarantine or holdup tank for analyus before transfer to the waste oric to release from the f acthty.
a storage tank Liquids transferred to a storage tank should be analy zed a senad time nrior to disposal e.
Work Areas (1) Systems and devices should be evalaated ii determine the need for hoods, glose boxes. and shieldmg d.
Quarantine and Storage Splem Guidelines for personnel pro t ec t ion. Generally, wet processmg (1) Quarant me and storage sp tems may operations involvmg gram quantitles of plutomum and consnt of ranks. interconnecting lines and associated cperatiorts involving 50 rmcrograms or more of equipmen t plutonium in respirable form should be conducted in a (2) Desgn of handhng systems for hquid glove box. Wet processing operations involving mahgram radioactne waste may be based on a continuous or batch quantities of plutonium and dry processing operanons process it based on a contmuous prosess, consideration involving less than 50 micrograms of plutomum could be should be men to processing and storage capacity for performed in a suitable closed system or hood unusual or emergency situations 11 on a batch process (2) Glove hos and containment e ndosure basis tonuderation should be gnen to maintainmg a construction are desc ribed in USAEC documen ts tank tapauty by birth treatmg before tankage is full.
TID-10620, " Report on Glove Boxes and Contamment Generally the mtrumum sut0cient capacity of a liquid Endosures" and TID-24236. " Glove Box Fire Safety.
waste storage system tank is that required to store waste (3) Exhausts from glove boxes and other generated durmg twice the maximum penod anticipated ventilated containment endosures used in the hquid for radioanalysis and discharge of the largest storage waste treatment system should be passed throegh a tank in the sy stem.
suitable filter system pnor tc, ietng released to the
- 13) At least two holdup or quarantine tanks atmosphere. The system should constst of a mmimum of houM be provided They sho..d be constructed of three high efficiency particulate air (HFPA) fdters m material capable of withstandmg the expected corrosive series, each capable of removing et least 99.971 ef the ef fect of the hquids to be handled.
airborne particles 0.3 microns or larger in sue and have (4) At least tw o storage tanks for treated an Underwriters' Laboratory Class 2 fire renstance rating.
hquid waste should be provided Tankage should be as set forth m the current edition of the Underwruers' fitted with a hquid level indicator, equipped so thst Laboratories Budding Matenals List.'
leaks may be derected. and located within a confinement (4) Surface finishes in the werk area should be systern suthaent to confine the entire capacity of the of materials which have satisfactory decon?ammanon tanks.
characteristics for their particular appbcation In general.
(N A ptaters or other means of circulation enoxy coatmgs are sufTic2ent for most waste treatment capable of mning the contents should be installed on areas and components, however, the use of suitable qt.a r an t me and storage tariks so that representativt stainless steels or polyester resins should be considered sampler of hquid waste from each tank may be obtained.
where high acid.oncen-ons may be expected (U) Provisions should be made to permit recycle of hquid waste from storage tanks to holdup or
'Copics may be obtained from Underwriters' Laboratones, quarantine tanks.
Inc. 333 Pfingsten Road. Northbrook. N. 60062.
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