Radiological Safety Analysis Document=20 This Radiological Safety Analysis Document (RSAD) will identify the = radiation budget for the experiment, the verification process for the = radiation budget, and controls with regard to production, movement, or = import of radioactive materials.=20 I. Description=20 Experiment E98-108, Electroproduction of Kaons up to Q2=3D3 (GeV/c)2, = will be run in Hall A from January 25-28, 2001 and March 1 - April 5, = 2001. The current for this experiment alternates from 25 microamps with = an aluminum target to 75 microamps with a cryogenic hydrogen target. = The energy ranges from 3.2 GeV to 6.0 GeV.=20 II. Summary and Conclusions=20 The experiment is calculated to use 1.0% of the annual design goal at = the Jefferson Lab boundary for 143 hours run-time. There will be no = need for manual manipulations of the target or need to access the target = platform during the experiment. The experiment will be periodically = monitored by the Radiation Control Group to ensure that the site = boundary goal is not exceeded. The experiment will likely cause = Radiation Areas and High Radiation Areas in the Hall. Adherence to this = RSAD is vital.=20 III. Calculations of Radiation Deposited in the Experimental Hall (the = Experiment Operations Envelope)=20 The radiation budget for a given experiment is the amount of radiation = that is expected at site boundary as a result of a given set of = experiments. This budget may be specified in terms of mrem at site = boundary or as a percentage of the Jefferson Lab design goal for dose to = the public, which is 10 mrem per year. The Jefferson Lab design goal is = 10% of the DOE annual dose limit to the public, and cannot be exceeded = without prior written consent from the Radiation Control Group Head, the = Director of Jefferson Lab, and the Department of Energy.=20 The radiation budget for experiment E98-108, with Physics Liaison John = LeRose, is approximately 0.1 mrem, or 1.0% of Jefferson Lab's annual = design goal. The attached spreadsheet details the calculations.=20 The Hall's budget will be verified during the experiment by using the = active monitors at the Jefferson Lab site boundary to keep up with the = dose for the individual setups. If it appears that the radiation budget = will be exceeded, the Radiation Control Group (RCG) will require a = meeting with the experimenters and the Head of the Physics Division to = determine if the experimental conditions are accurate, and to assess = what actions may reduce the dose rates at site boundary. If the site = boundary dose approaches or exceeds 10 mrem during any calendar year, = the experimental program will stop until a resolution can be reached.=20 =20 IV. Radiation Hazards=20 The following controls shall be used to prevent the unnecessary exposure = of personnel and to comply with Federal, State, and local regulations, = as well as with Jefferson Lab and the Experimenter's home institution = policies.=20 A. From Beam in the Hall=20 When the Hall status is Beam Permit, there are potentially lethal = conditions present. Therefore, prior to going to Beam Permit, several = actions will occur. Announcements will be made over the intercom system = notifying personnel of a change in status from Restricted Access (free = access to the Hall is allowed, with appropriate dosimetry and training) = to Sweep Mode. All magnetic locks on exit doors will be activated. = Persons trained to sweep the area will enter by keyed access (Controlled = Access) and search in all areas of the Hall to check for personnel.=20 After the sweep, another announcement will be made, indicating a change = to Power Permit, followed by Beam Permit. The lights will dim and = Run-Safe boxes will indicate "OPERATIONAL" and "UNSAFE". IF YOU ARE IN = THE HALL AT ANY TIME THAT THE RUN-SAFE BOXES INDICATE "OPERATIONAL" = AND/OR "UNSAFE", IMMEDIATELY HIT THE BUTTON ON THE BOX.=20 Controlled Area Radiation Monitors (CARMs) are located in strategic = areas around the Hall and the Counting House to ensure that unsafe = conditions do not occur in occupiable areas.=20 B. From Activation of Target and Beamline Components=20 All radioactive materials brought to Jefferson Lab shall be identified = to the Radiation Control Group. These materials include, but are not = limited to radioactive check sources (of any activity, exempt or = nonexempt), previously used targets or radioactive beamline components, = or previously used shielding or collimators. The RCG inventories and = tracks all radioactive materials onsite. The Radiation Control Group = will survey all experimental setups before experiments begin as a = baseline for future measurements.=20 The Radiation Control Group will coordinate all movement of used = targets, collimators, and shields. The Radiation Control Group will = assess the radiation exposure conditions and will implement controls as = necessary based on the radiological hazards.=20 There shall be no local movement of activated target configurations = without direct supervision by the Radiation Control Group. Remote = movement of target configurations shall be permitted, providing the = method of movement has been reviewed and approved by the Radiation = Control Group.=20 No work is to be performed on beamline components, which could result in = dispersal of radioactive material (e.g., drilling, cutting, welding, = etc.). Such activities must be conducted only with specific permission = and control of the Radiation Control Group.=20 The Radiation Control Group may be reached at any time through the = Accelerator Crew Chief (269-7045).=20 V. Incremental Shielding or Other Measures to be Taken to Reduce = Radiation Hazards=20 None appears to be necessary. It is up to Physics Division management = to consider the potential dose from this experiment and its impact on = the annual dose budget.=20 VI. Operations Procedures=20 All experimenters must comply with experiment-specific administrative = controls. These controls begin with the measures outlined in the = experiment's Conduct of Operations Document, and also include, but are = not limited to, Radiation Work Permits, Temporary Operational Safety = Procedures, and Operational Safety Procedures, or any verbal = instructions from the Radiation Control Group. A general access RWP is = in place that governs access to the Halls and the accelerator enclosure, = which may be found in the Machine Control Center (MCC) and the Counting = House; it must be read and signed by all participants in the experiment. = Any individual with a need to handle radioactive material at Jefferson = Lab shall first complete Radiation Worker (RW I) training.=20 There shall be adequate communication between the experimenter(s) and = the Accelerator Crew Chief and/or Program Deputy to ensure that all = power restrictions on the target are well known. Exceeding these power = restrictions may lead to excessive and unnecessary contamination, = activation, and personnel exposure.=20 No scattering chamber or downstream component may be altered outside the = scope of this RSAD without formal Radiation Control Group review. = Alteration of these components (including the exit beamline itself) may = result in increased radiation production from the Hall and a resultant = increase in site boundary dose.=20 VII. Decommissioning and Decontamination of Radioactive Components=20 Experimenters shall retain all targets and experimental equipment = brought to Jefferson Lab for temporary use during the experiment. = After sufficient decay of the radioactive target configurations, they = shall be delivered to the experimenter's home institution for final = disposition. All transportation shall be done in accordance with United = States Department of Transportation Regulations (Title 49, Code of = Federal Regulations) or International Civil Aviation Organization (ICAO) = regulations. In the event that the experimenter's home institution = cannot accept the radioactive material due to licensing requirements, = the experimenter shall arrange for appropriate funds transfers for = disposal of the material. Jefferson Lab cannot store indefinitely any = radioactive targets or experimental equipment.=20 =20 The Radiation Control Group may be reached at any time through the = Accelerator Crew Chief (269-7045).=20 =20 ------=_NextPart_000_0024_01C075A2.8B2C6C70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi,
Here you go!
-JJL
----- Original Message -----=20
From: Scott = Schwahn
To: John=20 LeRose ; Kees = de=20 Jager ; Dennis=20 Skopik ; Becky=20 Nevarez ; Bob = May ; David = Hamlette ; Earl = Ratliff ; Pavel = Degtiarenko ; Scott = Schwahn ; Melvin = Washington ; Dan Dotson ; = George = Walker ; Zach = Edwards ; Keith Welch ; = Justine = Jackson=20
Cc: Becky=20 Nevarez ; Bob = May ; David = Hamlette ; Earl = Ratliff ; Pavel = Degtiarenko ; Scott = Schwahn ; Melvin = Washington ; Dan Dotson ; = George = Walker ; Zach = Edwards ; Keith Welch ; = Archie = Parker
Sent: Wednesday, January 03, 2001 16:25
Subject: RSAD for E98-108

Please find below the text for RSAD E98-108.  A hard copy will = be sent=20 to Dennis and John.=20

Regards,
Scott=20

+++++++++++++++++++++++++++++++++++++++++++++++++=20

 Radiological Safety Analysis Document=20

This Radiological Safety Analysis Document (RSAD) will identify the = radiation=20 budget for the experiment, the verification process for the radiation = budget,=20 and controls with regard to production, movement, or import of = radioactive=20 materials.=20

I. Description=20

Experiment E98-108, Electroproduction of Kaons up to Q2=3D3 (GeV/c)2, = will be=20 run in Hall A from January 25-28, 2001 and March 1 – April 5, = 2001.  The=20 current for this experiment alternates from 25 microamps with an = aluminum target=20 to 75 microamps with a cryogenic hydrogen target.  The energy = ranges from=20 3.2 GeV to 6.0 GeV.=20

II. Summary and Conclusions=20

The experiment is calculated to use 1.0% of the annual design goal at = the=20 Jefferson Lab boundary for 143 hours run-time.  There will be no = need for=20 manual manipulations of the target or need to access the target platform = during=20 the experiment. The experiment will be periodically monitored by the = Radiation=20 Control Group to ensure that the site boundary goal is not exceeded. The = experiment will likely cause Radiation Areas and High Radiation Areas in = the=20 Hall.  Adherence to this RSAD is vital.=20

III. Calculations of Radiation Deposited in the Experimental Hall = (the=20 Experiment Operations Envelope)=20

The radiation budget for a given experiment is the amount of = radiation that=20 is expected at site boundary as a result of a given set of = experiments. =20 This budget may be specified in terms of mrem at site boundary or as a=20 percentage of the Jefferson Lab design goal for dose to the public, = which is 10=20 mrem per year.  The Jefferson Lab design goal is 10% of the DOE = annual dose=20 limit to the public, and cannot be exceeded without prior written = consent from=20 the Radiation Control Group Head, the Director of Jefferson Lab, and the = Department of Energy.=20

The radiation budget for experiment E98-108, with Physics Liaison = John=20 LeRose, is approximately 0.1 mrem, or 1.0% of Jefferson Lab's annual = design=20 goal. The attached spreadsheet details the calculations.=20

The Hall’s budget will be verified during the experiment by = using the active=20 monitors at the Jefferson Lab site boundary to keep up with the dose for = the=20 individual setups.  If it appears that the radiation budget will be = exceeded, the Radiation Control Group (RCG) will require a meeting with = the=20 experimenters and the Head of the Physics Division to determine if the=20 experimental conditions are accurate, and to assess what actions may = reduce the=20 dose rates at site boundary.  If the site boundary dose approaches = or=20 exceeds 10 mrem during any calendar year, the experimental program will = stop=20 until a resolution can be reached.
 =20

IV. Radiation Hazards=20

The following controls shall be used to prevent the unnecessary = exposure of=20 personnel and to comply with Federal, State, and local regulations, as = well as=20 with Jefferson Lab and the Experimenter's home institution policies.=20

A.  From Beam in the Hall=20

When the Hall status is Beam Permit, there are potentially lethal = conditions=20 present.  Therefore, prior to going to Beam Permit, several actions = will=20 occur.  Announcements will be made over the intercom system = notifying=20 personnel of a change in status from Restricted Access (free access to = the Hall=20 is allowed, with appropriate dosimetry and training) to Sweep = Mode.  All=20 magnetic locks on exit doors will be activated.  Persons trained to = sweep=20 the area will enter by keyed access (Controlled Access) and search in = all areas=20 of the Hall to check for personnel.=20

After the sweep, another announcement will be made, indicating a = change to=20 Power Permit, followed by Beam Permit.  The lights will dim and = Run-Safe=20 boxes will indicate "OPERATIONAL" and "UNSAFE".  IF YOU ARE IN THE = HALL AT=20 ANY TIME THAT THE RUN-SAFE BOXES INDICATE "OPERATIONAL" AND/OR "UNSAFE", = IMMEDIATELY HIT THE BUTTON ON THE BOX.=20

Controlled Area Radiation Monitors (CARMs) are located in strategic = areas=20 around the Hall and the Counting House to ensure that unsafe conditions = do not=20 occur in occupiable areas.=20

B.  From Activation of Target and Beamline Components=20

All radioactive materials brought to Jefferson Lab shall be = identified to the=20 Radiation Control Group.  These materials include, but are not = limited to=20 radioactive check sources (of any activity, exempt or nonexempt), = previously=20 used targets or radioactive beamline components, or previously used = shielding or=20 collimators.  The RCG inventories and tracks all radioactive = materials=20 onsite.  The Radiation Control Group will survey all experimental = setups=20 before experiments begin as a baseline for future measurements.=20

The Radiation Control Group will coordinate all movement of used = targets,=20 collimators, and shields.  The Radiation Control Group will assess = the=20 radiation exposure conditions and will implement controls as necessary = based on=20 the radiological hazards.=20

There shall be no local movement of activated target configurations = without=20 direct supervision by the Radiation Control Group.  Remote movement = of=20 target configurations shall be permitted, providing the method of = movement has=20 been reviewed and approved by the Radiation Control Group.=20

No work is to be performed on beamline components, which could result = in=20 dispersal of radioactive material (e.g., drilling, cutting, welding,=20 etc.).  Such activities must be conducted only with specific = permission and=20 control of the Radiation Control Group.=20

The Radiation Control Group may be reached at any time through the=20 Accelerator Crew Chief (269-7045).=20

V. Incremental Shielding or Other Measures to be Taken to Reduce = Radiation=20 Hazards=20

None appears to be necessary.  It is up to Physics Division = management=20 to consider the potential dose from this experiment and its impact on = the annual=20 dose budget.=20

VI. Operations Procedures=20

All experimenters must comply with experiment-specific administrative = controls.  These controls begin with the measures outlined in the=20 experiment's Conduct of Operations Document, and also include, but are = not=20 limited to, Radiation Work Permits, Temporary Operational Safety = Procedures, and=20 Operational Safety Procedures, or any verbal instructions from the = Radiation=20 Control Group.  A general access RWP is in place that governs = access to the=20 Halls and the accelerator enclosure, which may be found in the Machine = Control=20 Center (MCC) and the Counting House; it must be read and signed by all=20 participants in the experiment.  Any individual with a need to = handle=20 radioactive material at Jefferson Lab shall first complete Radiation = Worker (RW=20 I) training.=20

There shall be adequate communication between the experimenter(s) and = the=20 Accelerator Crew Chief and/or Program Deputy to ensure that all power=20 restrictions on the target are well known.  Exceeding these power=20 restrictions may lead to excessive and unnecessary contamination, = activation,=20 and personnel exposure.=20

No scattering chamber or downstream component may be altered outside = the=20 scope of this RSAD without formal Radiation Control Group review. =20 Alteration of these components (including the exit beamline itself) may = result=20 in increased radiation production from the Hall and a resultant increase = in site=20 boundary dose.=20

VII. Decommissioning and Decontamination of Radioactive Components=20

Experimenters shall retain all targets and experimental equipment = brought to=20 Jefferson Lab for temporary use during the experiment.   After = sufficient decay of the radioactive target configurations, they shall be = delivered to the experimenter's home institution for final = disposition. =20 All transportation shall be done in accordance with United States = Department of=20 Transportation Regulations (Title 49, Code of Federal Regulations) or=20 International Civil Aviation Organization (ICAO) regulations.  In = the event=20 that the experimenter's home institution cannot accept the radioactive = material=20 due to licensing requirements, the experimenter shall arrange for = appropriate=20 funds transfers for disposal of the material.  Jefferson Lab cannot = store=20 indefinitely any radioactive targets or experimental equipment. =
 =20

The Radiation Control Group may be reached at any time through the=20 Accelerator Crew Chief (269-7045).
 

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