ASTM_C_1661_-_13.pdf

Designation:C166113Standard Guide forViewing Systems for Remotely Operated Facilities1This standard is issued under the fixed designation C1661;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 Intent:1.1.1 This guide establishes the minimum requirements forviewing systems for remotely operated facilities,including hotcells(shielded cells),used for the processing and handling ofnuclear and radioactive materials.The intent of this guide is toaid in the design,selection,installation,modification,fabrication,and quality assurance of remote viewing systemsto maximize their usefulness and to minimize equipmentfailures.1.1.2 It is intended that this guide record the principles andcaveats that experience has shown to be essential to the design,fabrication,installation,maintenance,repair,replacement,and,decontamination and decommissioning of remote viewingequipment capable of meeting the stringent demands ofoperating,dependably and safely,in a hot cell environmentwhere operator visibility is limited due to the radiation expo-sure hazards.1.1.3 This guide is intended to apply to methods of remoteviewing for nuclear applications but may be applicable to anyenvironment where remote operational viewing is desirable.1.2 Applicability:1.2.1 This guide applies to,but is not limited to,radiationhardened and non-radiation hardened cameras(black-and-white and color),lenses,camera housings and positioners,periscopes,through wall/roof viewing,remotely deployablecameras,crane/robot mounted cameras,endoscope cameras,borescopes,video probes,flexible probes,mirrors,lighting,fiber lighting,and support equipment.1.2.2 This guide is intended to be applicable to equipmentused under one or more of the following conditions:1.2.2.1 The remote operation facility that contains a signifi-cant radiation hazard to man or the environment.1.2.2.2 The facility equipment can neither be accesseddirectly for purposes of operation or maintenance,nor can theequipment be viewed directly,for example,without shieldingviewing windows,periscopes,or a video monitoring system.1.2.2.3 The facility can be viewed directly but portions ofthe views are restricted(for example,the back or underside ofobjects)or where higher magnification or specialized viewingis beneficial.1.2.3 The remote viewing equipment may be intended foreither long-term application(commonly,in excess of severalyears)or for short-term usage(for example,troubleshooting).Both types of applications are addressed in sections that follow.1.2.4 This guide is not intended to cover the detailed designand application of remote handling connectors for services(forexample,electrical,instrumentation,video,etc.).1.2.5 The system of units employed in this guide is themetric unit,also known as SI Units,which are commonly usedfor International Systems,and defined by ASTM/IEEE SI 10,Standard for Use of International System of Units.Some videoparameters use traditional units that are not consistent with SIUnits but are used widely across the industry.For example,video image format is referred to in“inch”units.(See Table 1.)1.2.6 Lens and lens element measurements are always inmillimeter(mm)units,even where SI Units are not in commonusage,as an industry practice.Other SI Units(for example,cm)are rarely used for lenses or lens elements.1.2.7 Unless otherwise mentioned in this guide radiationexposure refers to gamma energy level in terms of60Coexposure,and absorbed radiation dose Gy/h(rad/h)refers toinstantaneous rates and not cumulative values.1.3 User Caveats:1.3.1 This guide does not cover radiation shielding windowsused for hot cell viewing.They are covered separately underGuide C1572.1.3.2 This guide is not a substitute for applied engineeringskills,proven practices and experience.Its purpose is toprovide guidance.1.3.3 The guidance set forth in this guide relating to designof equipment is intended only to inform designers and engi-neers of these features,conditions,and procedures that havebeen found necessary or highly desirable to the design,selection,operation and maintenance of reliable remote view-ing equipment for the subject service conditions.1.3.4 The guidance set forth in this guide results fromoperational experience of conditions,practices,features,lackof features,or lessons learned that were found to be sources ofoperating or maintenance problems,or causes of failure.1This guide is under the jurisdiction of ASTM Committee C26 on Nuclear FuelCycle and is the direct responsibility of Subcommittee C26.14 on Remote Systems.Current edition approved Jan.1,2013.Published February 2013.Originallyapproved in 2007.Last previous edition approved in 2007 as C1661 07.DOI:10.1520/C1661-13.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Consh