ML20199K013

Matls Licensing Package for Amend 12 to License SNM-490 for Univ of Cincinnati.Control:304242

ML20199K013
Person / Time
Site:	07000539
Issue date:	01/12/1999
From:	Cassandra Frazier NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
304242, NUDOCS 9901260310
Download: ML20199K013 (48)

Text

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Uoonee Number SNM-490 MATERIALS LICENSE W or Referona Number SUPPLEMENTARY SHEET 070-00539 Amendment No.12, 3042.yz  !

i University of Cincinnati Radttion Safety Office M. L. 0591 234 Goodman Street Cincinnati, OH 45267-0591 g gggu b A in accordance with letters dated Jh4,1998 and November 17,1998,d terminated.

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. e University of Cincinnati Ridi ti:n Safety Offi:o Radiation Safety Lab University of Cincinnati PO Box 670591 Cincinnati OH 45267-0591 Phone (513) 558-4110 Fax (513) 558-9905 July 24,1998 US Nuclear Regulatory '

Cornmission Region Ill 801 Warrenville Road Lisle, IL 60532-4351 Re: A -License No. 34-06903-05, add material to license T License No. 34-06903-09, transfer all material to "05" license, then terminate this license A License No. 34-06903-11, transfer one item to "05" license, then delete from this license T license No. SNM-490, transfer all material to "05" license, then terminate this license

Dear Sir or Madam:

This letter is a request from the University of Cincinnati to amendment and/or terminate 4 of the 7 licenses held by the University of Cincinnati. For the amendment, the University of Cincinnati requests to incorporate radioactive material from three specific licenses within its license of broad scope. After incorporation of the radioactive material two of the specific licenses would be terminated and the third license will have one item removed. The license numbers involved are j 34-06903-05 (broad scope license), 34-06903-09 (underwater pool irradiator license), 34-06903-11 (self-contained irradiator license), and SNM-490. l l

This request is separated into 5 sections. The first three sections (Underwater Pool Irradiator, J.L.  ;

Shepherd Irradiator, PuBe Sources) list the radioactive material to be incorporated into the broad I scope license and any special conditions for the radioactive material. Each section represents a I current specific license. The fourth section is a request to terminate the two specific licenses (license numbers 34-06903-09 and SNM-490) that will no longer be needed once radioactive material within this amendment request has been added to the broad scope license. The fifth section is a request to delete an item from the third specific license (license number 34-06903-

11) after radioactive material covered by the license has been added to the broad scope license.

linderwater Pool Irradiator The University of Cincinnati requests all radioactive material from license number 34-06903-09 (underwater pool irradiator) be added to license number 34-06903-05 (broad scope license). The change will not effect the location of the radioactive material nor its use. Specifically, the University of Cincinnati requests to add to license 34-06903-05 the following licensed radioactive material:

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1. Cobalt-60 Sealed Sources 1,372 curies as of (Oak Ridge National Laboratories) March 5,1976 NECEgygg

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2. Cobalt-60 Sealed Sources 8620 curies as of (Neutron Products Dwg No. A-200221) May 1,1982

3. Cobalt-60 Sealed Sources 4000 curies total (approved pursuant to 10 CFR 36.21) when combined with I and 2 above Authorized Use:

To be used in a pool irradiator for irradiation of materials (excluding explosive and highly flammable material) and for instmetion of students.

Authorized Users:

Licensed material shall only be used by, or under the supervision of, individuals designated as authorized users by the University of Cincinnati Radiation Safety Committee. Procedures for approval of authorized users will be in accordance with procedures approved for the broad scope license.

Training ofIndividualsjVJrking In or Freauenting the Area; Operating the irradiator is considered to be moving the pins, plugs, shields or caps Individuals who may operate the irradiator will be trained as " RAM radiation workers" in accordance with requirements of the broad scope license.

" RAM radiation workers" who are not authorized users must operate the irradiator under the immediate supervision of an authorized user (i.e., the authorized user must be present in the irradiator room).

Currently to become a " RAM radiation worker" an individual must attend " site-specific training" presented by the University of Cincinnati Radiation Safety Oflice, be provided " lab-specific training" by the authorized user and attend an annual retraining course, which covers some aspect (s) of radiation safety. For the underwater pool irradiator " lab-specific training" will include hands-on training of irradiator operating procedures and familiarization of emergency procedures.

Students enrolled in a class are not considered " RAM radiation workers" and are not allowed to operate the irradiator. However, they may place an object to be irradiated into an irradiation chamber. This would be performed under the immediate supervision of an authorized users (i.e., the authorized user must be present in the room.) Students will be provided training in accordance with 10 CFR 19.12. The training may either be presented by teaching personnel or Radiation Safety staff or by showing one of the radiation safety training films available from the Radiation Safety Oflice.

All other individuals who may enter the facility will either be esconed by an authorized user, RAM radiation worker or a member of the Radiation Safety Office staff, or will be trained in accordance with 10 CFR 19.12 and be instructed in emergency procedures. Unescorted individuals would be under the direct Page 2

• l supervision of an authorized user (i.e., authorized user in the area, but not i necessarily in the room.) l l

Egeilities and Eauioment: 4 Facility: The radioactive material is part of an underwater pool irradiator. The  ;

irradiator pool is located, and will remain located, in room 504C of the Old '

l Chemistry Building on the West Campus of the University of Cincinnati. The [

pool is made of reinforced concrete and has no outlets. The dimensions of the pool are 6 feet wide by 14 feet in length and 10 feet high. The pool is below grade l and rests on bedrock. A concrete banier railing (above grade) surrounds the pool. i l The barrier railing is 42 inches high and 6 inches thick. The pool is coated with l epoxy paint.

The sources for the inadiator are stored in a cavity built into the bottom of the pool.

l The cavity wall is lined with 4 inches oflead. There is a concrete barder surrounding j the cavity. Three sides of the barrier are walls 17 inches thick and 17 inches high.

The founh side of the barrier wall is the east wall of the pool. The sources are stored t in a stainless steel container that fits into the lead-lined cavity. Inside the stainless i steel container is the source holder. The source holder provides positive alignmerit j for each ofthe source pins.

When the irradiator is not in use, an 8-inch thick lead plug fills the cavity between j the concrete lips above the somte.

Old Chem (the building which houses the inadiator) is constructed of reinforced l concrete. The irradiator room itself is constructed of concrete and block. The walls j are lined with sheetrock and the ceiling is covered with ceiling tile.

l l Two sides of the inadiator room are below grade. The third side of the irradiator room is connected to a room (504B) under the control of the Division of Nuclear Engineering (Nuclear Engineering is a division under the University department, i.e.

Mechanical, Industrial and Nuclear Engineering, and is the primary group to operate the irradiator). A concrete wall, which is 6 feet thick, separates the two rooms. The

! fourth side of the room is connected to a stairway. The wall connecting the two areas is 3 feet thick stone block.

The irradiator room is approximately 18 feet high (tme concrete ceiling at ~18 feet; suspended ceiling tile at ~15 feet) and the true concrete ceiling is 4 inches of concrete. Above the inadiator room is an office.

Approximately 9.5 feet of water cover the sources. Water lost due to normal evaporation is replenished from a tap water supply. To maintain water clarity, pool water is pumped from 36 inches from the top of the pool through a diatomaceous

! eanh filter. The pump is programmed to run approximately 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> per day.

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Two water level indicators monitor the water level in the pool. The water level indicators consist of two float switches placed in the pool and connected to an alarm i station located outside the room. One float switch will activate a yellow light when the water level has dropped one foot below normal level; the second float switch triggers a red light and an audible alarm when the water level has dropped three feet below normal. The audible alarm is a local alarm. In addition, a signal is activated at security (i.e., remote location). Security has instmetions on how to respond if the i signal is activated. l l

The radiation level near the pool is monitored by a radiation monitor that activates an audible alarm when the radiation level exceeds 5 mR/hr. The detector for the monitor is suspended above the source pool. The alarm system for exposure rate is local.

1 During normal operation, the cunent dose rate above the pool (survey performed l 1/4/94 using a micro-R meter) is less than 0.65 mR/hr, the highest dose rate around I the pool is 0.60 mR/hr and the dose rate where personnel may routinely work (i.e.

collect data) is less than 0.18 mR/hr. If the irradiator were at full strength, i.e., 4000 l curies, the dose rate would be approximately twice that listed (i.e., activity at time of l measurement was approximately 2000 curies).

Remote handling tools: Samples are loaded into and out of the inadiator from the top of the pool. Heavy items are lowered into the pool using a hoist attached to cables to the sample. Lighter samples are lowered by hand using cables, long stainless steel or aluminum tools, and/or grip tongs.

Security: The facility is locked when no one is in the room. Access to the inadiator is limited to a single door. Key distribution is maintained by the Division of Nuclear Engineeiing. Key distribution is limited to authorized users and necessary support l

personnel (i.e., Radiation Safety and emergency personnel).

l l Radiation Protection Procram l In general the Radiation Protection Program will be the same as that approved for l the broad scope license. Some details of how the current program will be incorporated and differences from the current program follow:

l Personnel Monitoring l During normal operations, the room where the irradiator pool is housed and j where the inadiator is operated is not a very high radiation area, a high l

radiation area nor a radiation area. The exposure rate in the room during i normal operations ranges from less than 0.18 mR/hr to 1.2 mR/hr, depending on location within the room and source strength. Personnct dosimetry records indicate that personnel who frequent the area do not receive radiation doses greater than 10% of the annual limit (e.g., 500 mrem to the whole

body). However, personnel who operate the irradiator will be required to 1

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wear whole body personnel dosimeters supplied by a company that is NVLAP approved.

Radiation Detection Instruments <

A radiation detector monitors the radiation levels near the pool. An audible alarm is activated if the radiation level near the pool exceeds 5 mR/hr. The detector itselfis suspended above the source pool.

At a minimum, one calibrated and operable survey meter that can measure up to ! R/hr will be available for use at the underwater pool inadiator facility.

As stated cunently in the broad scope license, instruments will be calibrated I by the meter manufacturer, an NRC or Agreement State approved vendor or j the University of Cincinnati Radiation Safety Office staff prior to initial use and, at least annually thereafter, and following repair. For meters used in the i pool irradiator, calibration may also be performed by a member of the l Department of Mechanical, Industrial and Nuclear Engineering staff.

Also as stated in the broad scope license, a minimum calibration will include two points on each scale (at approximately 1/3 and 2/3 of each scale). The inverse square law and the radioactive decay law will be used to correct for changes in exposure rate due to changes in distances or source decay.

leak Testing l Leak tests will be performed by an under the supervision of the University of  !

Cincinnati Radiation Safety Oflicer. Leak tests of the sources is performed by analyzing a sample of water from the pool for Co-60. The water sample is taken when the pump is operating. The minimum detectable activity for the method used will be less than 0.005 microcuries per milliliter. Leak testing l will be performed at least once every six months.

Operating and Emergency Procedures An operating procedure is available to each person who operates the irradiator. The operating procedure includes maintaining security to the facility, safety precautions and review of radiation levels. A copy of the current operating procedure is attached (Attachment A). The University of Cincinnati reserves the right to make changes to the procedure without approval of the Nuclear Regulatory Commission if the revisions do not reduce safety of the facility.

An emergency procedure is provided to security and available to each person j who operates the irradiator. The emergency procedure includes information l

on what to do and who to contact in case of an emergency. A copy of the current emergency procedure is attached (Attachment B). The University of Cincinnati reserves the right to make changes to the procedure without Page 5 l

O approval of the Nuclear Regulatory Commission if the revisions do not reduce the safety of the facility.

In the event of a leaking source is detected a search for the leaking source pin will be initiated. Once the leaking pin (s) is located it will be isolated to limit further contamination and shipped back to a licensed repair or disposal facility. (An example procedure, titled " Smear procedure for Co-60 pins", for locating a pin is included with the emergency procedures referenced above.)

Irradiator decontamination will be performed under the direction of the Radiation Safety Office. Decontamination techniques can include, but are not limited to, use of a deionizing system to remove cobalt ions from the water. All radioactive waste generated during decontamination will be disposed in accordance with federal and/or state regulations.

I Routine Maintenance A diatomaceous earth filtering system is used to maintain water clarity in the irradiator pool; therefore, the recommended conductivity standard of 10 microsiemens per centimeter cannot be met (conductivity test performed Febmary 2,1994 indicated a conductivity level of approximately 380 microsiemens per centimeter). The filter system maintains a very high degree of water clarity and after over 20 years of operation there is no evidence of corrosion neither to the source pins nor to any of the associated equipment. Chlorine levels are maintained at less than 4 parts per million. ,

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Preventative maintenance is performed monthly. The preventative l maintenanceincludes:

l. Visual inspection of the sources, surrounding area, and support j equipment.  ;

2. Check of the water fill system. l

3. Testing of the electric hoist.

4. Testing of the radiation detector and alarm.

5. Testing of the water level detector and alarm.

6. Testing water for chlorine level.

Audits and Surveys Authorizations issued for the underwater pool irradiator will be audited as a group at least biannually. Surveys will comprise of the semi-annual leak test.

l Waste Management in the event the irradiator is disposed of, " disposal" will be by transfer to a licensee specifically authorized to accept the licensed material (e.g.,

original supplier, a commercial firm licensed by the NRC or an Agreement State to accept th radioactive material as radioactive waste or another NRC, or Agreement State licensee authorized to possess the licensed i material).

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. i s l J.L. Shepherd Irradiator I The University of Cincinnati requests one of the sources from license number 34-06903- l 11 (self-contained irradiator license) to be added to license number 34-06903-05 (broad scope license). Specifically, the University of Cincinnati requests to add to license I number 34-06903-05 the following licensed radioactive material:

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1. Cesium-137 Sealed Sources 2500 curies l (J.L. Shepherd & Assoc. Model 6810) l f

(Note: the remaining two sources, both blood irradiators, will remain under license number 34-06903-11.)

Authorized Use:

To be used in a J.L. Shepherd & Associates Model Mark-I Series (Sub Model 68) irradiator for clinical testing and for research and development, as defined in Part 30, Section 30.4 of 10 CFR, including irradiation of small animals, cells, and tissues; excluding explosives and flammables.

Authorized Users:

Licensed material shall only be used by, or under the supervision of, individuals designated as authorized users by the University of Cincinnati Radiation Safety Committee. Procedures for approval of authorized users will be in accordance with procedures approved for the broad scope license.

Trainine ofIndividuals Workine In or Frequentine the Area: 1 Individuals who may operate the irradiator will be trained as " RAM radiation workers" in accordance with requirements of the broad scope license. Currently to become a " RAM radiation worker" an individual must attend " site-specific training" presented by the University of Cincinnati Radiation Safety Office, be provided " lab-specific training" by the authorized user and attend an annual retraining course, which covers some aspect (s) of radiation safety. For the Mark-I irradiator " lab-specific training" will include hands-on training ofirradiator operating procedures and familiarization of emergency procedures.

All other individuals who may frequent the area will either be escorted or will be trained in accordance with 10 CFR 19.12.

Eacilities and Equipment:

Irradiator description: The J.L. Shepherd Mark 1-68 is a self-contained dry storage

! irradiator. Items are moved into the exposure chamber by way of a door. The door l and source drive system are fully interlocked so that the source cannot be raised if l the door is not fully closed and the door cannot be opened unless the source is ,

! fully shielded. j Current location: The J.L. Shepherd Mark 1-68 is currently housed in Children's

,. Hospital Research Foundation Room 7042. Children's Hospital Research Page 7 l

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1 Foundation Room 7042 is designed to meet or exceed a" strent State of Ohio building codes. The building is fully equipped with a sp.. ,kler system, smoke alarms and fire pull boxes.

The University of Cincinnati reserves the right to move the irradiator to another area within the areas of use listed on the broad scope license. If moved, the area of use will meet, at a minimum, the specifications listed above for the current room and J.L. Shepherd will move the unit.

Security: Access to Children's Hospital Research Foundation room 7042 is controlled by a key card system.

l All keys for operation of the irradiator will be maintained by an authorized user or a person designated by an authorized user. If multiple keysAey sets are received from the company only one key / key set will be available fu. irradiator operation at any given time.

l Radiation Protection Program In general the Radiation Protection Program will be the same as that for the broad scope license. Some details of how the current program will be incorporated and

difTerences from the current program follow

l Personnel Monitoring Personnel who operate the irradiator will be required to wear whole body personnel dosimeters supplied by a company that is NVLAP approved.

Radiation Detection Instmments The radiation exposure levels in the irradiator room will be monitored. An audible and visible alarm will activate when the radiation within the room exceeds 5.0 mR/hr The detector will be located in the irradiator room.

The alarm will be interlocked with the unit. If a 5.0 mR/hr field is detected the audible alarm will sound and the source will immediately return to the

" safe" position. At least every six months the room monitor will be tested to ensure it is functioning. This test will consist of placing a radiation I source up to the detector to ensure radiation is detected.

Leak Testing Leak testing will be performed by or under the supervision of the l University of Cincinnati's Radiation Safety Officer. Swipes taken during l the leak test will be counted using an instrument capable of quantitatively

measuring 0.005 microcuries.

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Operating and Emergency Procedures A copy of the operating procedures will be maintained in the irradiator room and/or the antercom to the irradiator room.

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4 A copy of the emergency procedures will be posted in the irradiator room and/or the anteroom to the irradiator room.

Copies of sample operating and emergency procedures are attached (Attachments C and D respectively). The University reserves the right to make changes to the procedures without the approva.1 of the Nuclear Regulatory Commission if the revisions do not reduce the safety of the facility.

• Routine Maintenance and Repair of the Irradiator Routine maintenance of the safety systems and source are not required for the J. L. Shepherd Mark I-68 irradiator. Repair and service of these items, when needed, will be performed by a contractor licensed to install / repair  ;

source. i Audits and Surveys

! Authorizations issued for the J.L. Shepherd irradiator will be audited as a ,

group at least biannually. Surveys will comprise of the semi-annual leak  :

test.  ;

1 Waste Management In the event the irradiator is disposed of, " disposal" will be by transfer to a j

licensee specifically authorized to accept the licensed material (e.g. 1

original supplier, a commercial firm licensed by the NRC or an Agreement l l

State to accept the radioactive material as radioactive waste or another l NRC, or Agreement State licensee authorized to possess the licensed material).

PuBe Sources The University of Cincinnati requests all radioactive material from license number SNM-490 to be added to license number 34-06903-05 (broad scope license). The change will l not effect the storage location of the radioactive material nor its use. Specifically, the University of Cincinnati requests to add to license 34-06903-05 the following licensed radioactive material:

, 1. Plutonium-239 Encapsulated as PuBe neutron 1 curie (16 grams)

I source (Mound Laboratory)

2. Plutonium-239 Encapsulated as PuBe neutron 2 curies (32 grams) source (Mound Laboratory)

3. Plutonium-239 Encapsulated as PuBe neutron 3 curies (48 grams) source (Mound Laboratory) j 4. Plutonium-239 Encapsulated as PuBe neutron 4 curies (64 grams)

source (Mound Laboratory)

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t l Authorized Use:

To be used for laboratory experiments and student instruction. Examples of the type of experiments to be performed are included in Attachment E. However, the University of Cincinnati does not wish to limit the experiments to those listed, any l new experimental procedures will be reviewed by the Radiation Safety l Committee in accordance with procedures required by the broad scope license.

Authorized Users Licensed material shall only be used by, or under the supervision of, individuals designated as authorized users by the University of Cincinnati Radiation Safety Committee. Procedures for approval of authorized users will be in accordance with procedures approved for the broad scope license.

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Training ofIndividuals Working In or Frequenting the Area:

Except for students enrolled in a class, individuals who may handle the PuBe sources will be trained as " RAM radiation workers" in accordance with requirements of the broad scope license. Currently to become an " RAM radiation worker" an individual must attend " site-specific training" presented by the University of Cincinnati Radiation Safety Office, be provided " lab-specific training" by the autbarized user and attend an annual retraining course, which covers some aspect (s) of radiation safety. For the PuBe sources " lab-specific training" will include special precautions for handling PuBe sources. l l

l l Students enrolled in a class are not considered " RAM radiation workers" and are not allowed to use the PuBe sources without a " RAM radiation worker" (i.e., Teaching l Assistant or authorized user) present. Students will be provided training in accordance with 10 CFR 19.12. This training may either be presented by teaching personnel or Radiation Safety stafE or by showing one of the radiation safety training films available from the Radiation Safety Office.

Teaching Assistants are supervised by authorized users. Teaching Assistants are required to be trained as " RAM radiation workers" under the University of Cincinnati's Radiation Control and Safety Program.

Facilities and Equipment The PuBe sources are stored in Old Chemistry Room 415B. The Old Chemistry l Building is located on the West Campus of the University of Cincinnati, Cincinnati, 1 Ohio.

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The sources may be used anywhere on the West Campus of the University of Cincinnati, Cincinnati, OH.

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The sources are stored in a watertight aluminum tube near the bottom of a 12-foot deep water filled well. The storage room is kept at negative air pressure. I Page 10 l

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The following remote handling equipment is available for use with the PuBe sources.

9-inch pincher type handling tool with a head specifically designed to manipulate the PuBe sources B_adiation Protection Program In general the Radiation Protection Program will be the same as that for the broad scope license. Some details of how the current program will be incorporated and differences from the current program follow.

Personnel Monitoring Program Personnel who actively handle the PuBe sources are required to wear a whole body dosimeter that can detect exposure to neutrons. The supplier of the dosimeters will be NVLAP approved.

1 Radiation Detection Instmments and Calibration l Primarily the Division of Nuclear Engineering uses the suberitical assembly. The Division of Nuclear Engineering has available the following radiation detection instmments.

l l Tvoe Number Radia. tion Detected Sensitivity Ranne ~

l Scintillation 1 Alpha 0 - 2.4 x 10' cpm GM pancake 1 Alpha, Beta, Gamma 0 - 2.4 x 105 cpm GM 1 Beta, Gamma 0 - 50 mPJhr Ludlum-BF3 1 Neutron 0 - 10 R/hr The University of Cincinnati reserves the right to replace the meters with ones that are at least equivalent.

GM type instrument calibrations: The GM type instrument used for exposure rate measurements will be calibrated by the meter manufacturer, an NRC or Agreement State approved vendor or by the UC Radiation Safety Office staff prior to initial use and, at least annually thereafter, and following repair. All calibrations of this instrument will be in accordance with procedures approved under the license of broad scope.

A minimum calibration will include two points on each scale (at approximately 1/3 and 2/3 of each scale). The inverse square law and the radioactive decay law will be used to correct for changes in exposure rate due to changes in distances or source decay.

Neutron meter calibrations: The neutron meter will be calibrated by the meter manufacturer, an NRC or agreement state approved vendor, an authorized user for the PuBe sources, or a RAM radiation worker under the supervision of an authorized user for the PuBe sources. If performed by a Page11 l

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member of the stafrof the University of Cincinnati the following procedure will be used.

The University of Cincinnati does not have neutron sources that are NBS/ NITS traceable for exposure rate. Therefore, the instruments are

" calibrated" using a secondary calibration technique (constancy check). The instrument was purchased calibrated from the survey meter manufacturer and will be returned to the manufacturer for recalibration following repair.

Constancy of calibration will be checked, annually.

Upon receipt of the calibrated instmment, a calibration test procedure was developed. The test procedure established a reproducible relationship (setup) l between the survey meter and the PuBe sources (1,2,3 and or 4 Ci), and/or i paraff'm blocks. The test requires that at least two points per scale (at I approximately 1/3 and 2/3 of each scale) be evaluated. During each secondary calibration (constancy check) the setup is reproduced. The procedure requires that the exposure rate detected during the test be within 10% of the exposure rate detected during the initial test procedure. Meters that fail this " calibration test" will be taken out of service and/or returned to the manufacturer for recalibration.

Leak Test and Inventory Leak tests will be performed by or under the supervision of the University of Cincinnati's Radiation Safety Oflicer. Swipes taken during the leak test will be counted using an instrument capable of quantitatively measuring 0.005 ,

microcuries.

License condition 15 states "the licensee shall conduct a physical inventory every 6 months . . records of the inventories... shall include the information reqeired by 10 CFR 35.51(g)." 10 CFR 35.51(g) includes the in its requirements the model number of the sealed source. An audit of the SNM license uncovered a deficiency with this specific requirement.

Specifically, no model number can be located for the sources. Therefore, the University of Cincinnati requests an exemption from this requirement for these sources. For these sources records will include other identification information in lieu of the model number.

Emergency Procedure A copy of the emergency procedure currently in use for the PuBe sources is attached (Attachment F). The University of Cincinnati reserves the right to make changes to the procedure without the approval of the Nuclear Regulatory Commission if the revision does not reduce safety.

Audits Authorizations issued for use of the PuBe sources will be audited as a group at least biannually. Surveys will comprise of the semi-annual leak tests.

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Waste Management in the event the irradiator is disposed of, " disposal" will be by transfer to a licensee specifically authorized to accept the licensed material (e.g. '

original supplier, a commercial firm licensed by the NRC or an Agreement State to accept the radioactive material as radioactive waste or another NRC, or Agreement State licensee authorized to possess the licensed -

material). >

License Terminations Once the above requests have been completed, the University of Cincinnati requests the termination of two specific licenses. The licenses are 34-06903-05 (underwater pool i

irradiator) and SNM-490. Both of these licenses can be terminated once all radioactive material has been transferred to and the possession and use incorporated within license number 34-06903-05 (broad scope license).

l l Deletion ofitem from License Once the above requests have been completed, the University of Cincinnati requests the i removal of the J.L Shepherd irradiator from license number 34-06903-11. Items within the I

license that apply exclusively to the J.L. Shepherd irradiator are radioactive material designation in 6C,7C and 8C, authorized use designation in 9C, and letters dated February 29,1996 and September 9,1996 listed in condition 18B. Also, condition 15 specifically references the J.L. Shepherd irradiator, in addition to the two irradiators that remain on the license.

l The University of Cincinnati is a non-profit educational institution. This amendment request does not apply to the human-use of radioactive material. Therefore, under 10 CFR 170.ll(a)(4) this license is exempt from fees.

If you have any questions do not hesitate to call.

l ere y,

_,) m Vic 3ria Morris, MS, CHP Radiation Safety Oflicer C: D. Albrinck, JD, MBA R. Millard, Ph.D. l

' R. Arceci, M.D.

A. Behbahani, Ph.D.

H. Boeing D. Hake H. Spitz, Ph.D. )

J. Valentine, Ph.D. I Page 13 j l

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l ATTACHMENT A (Underwater Pool Irradiator j Sample Operating Procedures) 1

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I COBALT SIXfi IRRADIATOR OPERATING PROCEDURES (example)

1. The following can only be performed by or under the direct -

and immediate supervision of an Authorized User. + ,

A. Movement of the safety netting.

B. Movement of the source shields.

C. Movement or manipulation of the source. pins. .

D. Adj,ustment of the water system controls.

E. Lowering or placement of items in the pool, such as, putting samples into the pool. ..  ;

+ An Authorized User is someone specifically listed in the license as an Authorized User.  ;

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2. The door to the Cobalt Sixty Facility (Old Chem room 504C) will be kept closed and locked unless an Authorized User is (

present in the Nuclear Engineering Laboratories and the facility is occupied.  !

3. When the facility is occupied, the door will be left open, unless facility maintenance or the experiment requires it '

to be closed. . ,

4. The sources.will be stored in lead shields when not being l used. , ,

5. Before entering the facility, radiation levels will be checked by reading the radiation monitor.  !

6. The pool safety netting will be in place when someone is  !

working above the pool and there is danger that they could fall in, resulting in a high dose of radiation. .'

7. The Authorized User is responsible for ensuring that:

A. The User Request and Safety Report has been completed and approved for the experiment.

B. The Cobalt Sixty Facility Work Sheet has been completed.

C. The irradiation has been recorded in the Cobalt Sixty Log

. Book,

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r Once at the bottom of the pool, the pins will be unloaded from the cask and into the source holder using remote handling equipment. (The source holder will be approximately nine feet from the cask so there is no danger of the cask falling on the source holder.) The unloading of pins will be performed by Nuclear Engineering personnel under the .  !

supervision of the Radiation Safety Office. I Af ter removing the empty cask .froin the pool it will be surveyed for radiation. If no radiation / radiation contamination is detected the empty cask will be shipped back to the supplier.

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. i INSTALLATION OF NEW SOURCES I (example) i .

The Co-60 Source will be delivered and installed in three stages.

1. Receiving and storage; 2. Moving shipping cask from storage room to the pool area flo'or; 3. Moving cask from pool area floor to the bottom of the pool and unloading the pins into the source holder.

1. Receiv'ino and Storace After receiving order approval from Radiation Safety, the source (s) will be shipped from the supplier to the loading dock of the Old Chemistry-Building.

Upon arrival, the shipping cask will be inspected and monitored. These surveys will be performed by Nuclear l Engineering or Radiation Safety Office personnel. If the shipment is determined to be safe, (i.e., shipped in )

accordance with DOT), the cask will be unloaded and placed in j a storage room under the supervision of Nuclear Engineering.

The cask will remain in storage until it is moved to the pool'

• site. Movement of sources from the storage location to the pool shall.only occur during University non-business hours, either on a weekend or a quarter break. -

2. Movino Shinoino Cask from the Storace Room the the Pool Area '

Floor The shipping cask will be moved by qualified riggers under the supervisicu of Nuclear Engineering and the Radiation

- - . . ., Safety Office. -

All rigging personnel will be issued dosimeters and the rigging will take place during University non-business hours.

The shipping cask will be moved by the riggers from the storage room into the pool area using the shortest available route.

After the shipping cask has been secured in the pool area the l riggers will be required to leave the area. '

3. Movina Cask to Pool Bottom and Unloadino Pins Using a hoist the shipping cask will be lifted from the pool area floor to the bottom of the pool.

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I ATTACHMENT B (Underwater Pool Irradiator '

Sample Emergency Procedures)

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Emsrg:ncy Proc:cuso EP-C60-01 General Emergency Procedures for the Cobalt 60 Facility Rev0 ,

-4 Table of Contents l Revision History li  !

List of Effective Pages lii  :

l 1.0 Introduction 1- I 2.0 Definitions _

2 3.0 Performance ,

3 3.1 Handling a Yellow Alarm Condition 4 3.2 First Respondents Handling of a Yellow Alarm 5 3.3 Handling a ' Red Alarm Condition 6

'3.4 First Respondents Handling of a Red Alarm 7 3.5 Handling a High Radiation Level- .

8 3.6 First Responderits Handling of a High Radiation Level 10 l

Attachments l Alarm Response Procedures for University Emergency Personnel i Career Relations Floor Plan,600 Level Old Chemistry Building Written by Howard Boeing i Copy No.

s Em:rgrncy Pracaduro EP-C60-01 General Emergency Procedures for the Cobalt 60 Facility Rev0  ;

1.0 Introduction Emergency procedures are required only in the event of a low water level (Yellow t or Red Alarm) or a Radiation Area Alarm. If any of these conditions occur, f

immediately implement the appropriate procedures.

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Emcrg:ncy Procedb.o L. EP-C60-01 General Emergency Procedures for the Cobalt 60 Facility Rev0 2.0 Definitions 2.1 First Respondent is the individual from the emergency alarm calllist that first arrives at the Cobalt 60 Facility.

2.2 Large Leak is a leak that exceeds the capability of the pool fill ,

system.

2.3 Maximum Dose Rate is 100 mrem /hr. This is the maximum radiation level that emergency personnel are permitted to work in while putting the source in the fully shielded position. However Radiation Safety can give case approval to exceed this limit.

2.4 Minimum Water Depth is 4 feet below the normal water level and is marked on the inside pool wall. This is the lowest water depth that emergency personnel are permitted to have while putting the source in the fully shielded position. However Radiation Safety can give case approval to exceed this limit.

I 2.5 M/norLeak is a loss of pool water at such a rate that the pool fill i system can maintain or exceed the loss rate.

2.6 Radiation Area Alarm means the radiation level above the pool exceeds 5 mrem /hr. This is the level at which the radiation  !

I monitor is set to trigger an alarm.

2.7 Red Alarm means there has beeri a 3 foot drop in water level.

This indicates that radiation levels could be increasing above the allowable limits for continuous occupancy. If the water level l continues to drop radiation exposure rates could reach

! dangerously high levels, possibly exceeding 600 R/hr.

2.8 RSOF refers to the Radiation Safety Office.

2.9 Ye//ow Alarm means the water level has dropped 1 foot below

normal. A 1 foot drop in water level will result in an insignificant increase in radiation levels. It is intended as a i

warning to take action.-

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Em:rg::ncy Proced o -

EP-C60-01.

L General Emergency Procedures for the Cobalt 60 Facility Rev0 l 1

l l 3.0 Performance i i L 3.0.1 Yellow Alarm requires the implementation of 3.1 & 3.2  !

i 3.0.2 Red Alarm requires the implementation of 3.3 & 3.4 l

3.0.3 Radiation Area Alarm requires the implementation of 3.5 & 3.6  ;

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- Em rg:ncy Proc:d(ara EP-CGO-01 l General Emergency Procedures for the Cobalt 60 Facility Rev0 l

3.1 Handling a Yellow Alarm Condition i l l 3.1.1 Evacuate the facility making sure the door is closed and locked l

behind you.

l 3.2.2 Notify one of the emergency respondents listed below.

1 st. Howard Boeing (Butch) 414 Old Chemistry Office 6-2053 Home M 2nd. Dr. Henry Spitz 514 Old Chemistry Office 62003 Home M 3rd. Dr. John Valentine 511 Old Chemistry Office 6-2482  :

Home M 3.2.3 Notify the Radiation Safety Office.

Radiation Safety Office 8-4110 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> pager 249-6812, digital number input 3.2.4 No further actions required other than to remain in the area until one of the above arrives.

4 Copy No.

Em:rg:ncy Proc:d rs EP-CGO-01 General Emergency Procedures for the Cobalt 60 Facility Rev 0 l 3.2 First Respondents Handling of Yellow Alarm  :

3.2.1 Determine cause of alarm and implement the following; False Alarm correct as necessary. .

Minor Leak continue normal operations and correct as necessary.

Large Leak discontinue operations, put source shields in place.

3.2.2 Notify the Radiation Safety Office.

Radiation Safety Office 8-4110 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> pager 249 6812, digital number input. l i

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Em rg:ncy Proced o EP-C60-01 General Emergency Procedures for the Cobalt 60 Facility Rev0 3.3 Handling a Red Alarm Condition 3.3.1 Evacuate the facility making sure the door is closed and locked behind you.

3.3.2 Call the Emergency Communications Dispatcher (911) and inform them of the situation and tell them to immediately implement their Cobalt 60 Facility Red Alarm Procedures. They may have already implemented these procedures, as they should have received automatic notification by electronic alarm.

3.3.3 Notify one of the Emergency Respondents listed below.

1 st. Howard Boeing (Butch) 414 Old Chemistry Office 6-2053 Home M 2nd. Dr. Henry Spitz 514 Old Chemistry Office 62003 Home g 3rd. Dr. John Valentine 511 Old Chemistry l Office 6-2482 Home M 3.3.4 Notify the Radiation Safety Office Radiation Safety Office 8-4110 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> pager 249-6812, digital number input 3.3.5 No further action is required other than to remain in a nearby safe area until one of the above arrives.

6 Copy No.

Emcrg:ncy Proccd e EP-C60-01 General Emergency Proceduies for the Cobalt 60 Facility Rev0 3.4 First Respondents Handling of Red Alarm 3.4.1 Upon arrival, perform a radiation survey at the entrance to the facility. Survey instruments are kept next to the entrance door.

3.4.2 Open the facility door and evaluate the situation. If the pool water levelis low, as viewed from the door, press the emergency fill control button to replenish lost water.

3.4.3 Evacuate as necessary.

Ambulatory Personnel, verbally instruct them to leave the facility. l Have them wait f'or the RSOF in a nearby safe area.

Incapacitated Personnel, evacuate as necessary. Move them to a i l

nearby safe area. Notify the Emergency Communications Dispatcher (911) of their medical needs. '

l 3.4.4 Enter the facility with survey instrument in hand and monitoring the radiations levels. Using the following guidelines put the source in the fully shielded position.

Maximum Dose Rate,100 mrem /hr. If the dose rate exceeds 100 mrem /hr cease operations and evacuate the facility.

Minimum Water Depth,4 feet below the normal water level, if the pool water level drops below this depth, cease operations and evacuate the facility.

Maximum Time,1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. If the time taken to install the shields takes more than one hour, cease operations and evacuate. j

. 3.4.5 Rooms 600 G, H, I, J, K, L, M, P and the surrounding hallways should have been evacuated by the campus police. Taking a survey i instrument with you, ensure these areas have been evacuated.

3.4.6 Perform a survey of all the surrounding areas and evacuate if the dose rate exceeds the limits established by the NRC for unrestricted areas and the general public (2 mrem /hr,10CFR20.1301).

3.4.7 in conjunction with the RSO determine the next course of action.

7 Copy No.

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. - l Emerg:ncy Proc::d e EP-C60-01 I General Emergency Procedures for the Cobalt 60 Facility Rev0 l l

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3.5 Handling a Radiation Area Alarm 3.5.1 if the pool radiation monitor triggers a high level alarm, check the ,

l unit and read the radiation level. If the radiation level exceeds 5 mrem /hr do the following.

3.5.2 The radiation monitor can spontaneously trigger. Confirm the radiation level with a survey instrument. If the alarm has falsely triggered, press the reset button and notify Howard Boeing. Take no further action. If the alarm is correct, proceed with the following.

3.5.3 Evacuate the facility making sure the door is closed and locked behind you.

3.5.4 Notify one of the following Emergency Respondents.

1 st. Howard Boeing (Butch) 414 Old Chemistry i

Office 6-2053 l Home M 2nd. Dr. Henry Spitz 514 or 501 Old Chemistry Office 62003 Home M i 1

3rd Dr. John Valentine 511 Old Chemistry Office 6-2482 Home h 3.5.5 Notify the Radiation Safety Office Radiation Safety Office 8-4110 24 Hour Pager 249-6812, digital number input 3.5.6 Continue m6nitoring the radiation level. If the radiation level rises above 50 mrem /hr, telephone the Ernergency Communications Dispatcher (911).

i Brief them on the situation and tell them to implement " COBALT 60 RED 1

ALARM PROCEDURES". These procedures initiate notification of emergency response personnel and evacuation of pertinent areas of the Old Chemistry Building.

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Emerguncy Proondhra EP-C60-01 General Emergency Procedures for the Cobalt 60 Facility Rev0 3.6 First Respondents Handling of a Radiation Area Alarm l

3.6.1 Upon arrival, perform a radiation survey at the entrance to the l

i facility. Survey instruments are kept next to the entrance door.  ;

.I 3.6.2 Open the facility door and evaluate the situation, if the pool water level i l is low, as viewed from the door, press the emergency fill control button  ;

to replenish lost water.  !

3.6.3 Evacuate as necessary. ,

Ambu /atory Personnel, verbally instruct them to leave the facility. I Have them wait for the RSOF in a nearby safe area.

Incapacitated Personnel, evacuate as necessary. Move them to a nearby safe area. Notify the Emergency Communications Dispatcher (911) of their medical needs.

3.6.4 With survey instrument in hand, enter the facility. While continuously f monitoring the radiation levels, approach the pool. If the cause of the high radiation levelis not caused by a loss of water, take the appropriate corrective action. Do not exceed the NRC dose limits as established in 10 CFR 20. If the high radiation levelis caused by a low water level, install the source shields using the following guidelines.

Maximum Dose Rate,100 mrem /hr. If the dose rate exceeds i '

i 100 mrem /hr, cease operations and evacuate the facility.

Minimum Water Depth,4 feet below the normal water level . If the pool water level drops below this depth, cease operations and j evacuate the facility.

Maximum Time,1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. If the time taken to install the shields takes more than one hour, cease operations and evacuate.

. 3.6.5 Rooms 600 G, H, I, J, K, L, M, P and the surrounding hallways l should have been evacuated by the campus police. Taking a survey

! instrument with you, ensure that these areas have been evacuated.

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l Emcrg ncy Proc: dura EP-C60-01

, General Emergency Procedures for the Cobalt 60 Facility Rev0 l

l 3.6.6 Perform a survey of all the surrounding areas and evacuate as necessary. If the dose rate in any area exceeds the limits l established by the NRC for an unrestricted area and the general public (2 mrem /hr, per 10CFR20.1301 ), evacuate that area.

3.6.7 In conjunction with the RSOF determine the next course of action.

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COBALT SIXTY FACbLITY l

I ALARM RESPONSE PROCEDURES FOR

! UNIVERSITY EMERGENCY PERSONNEL i

l j 504C OLD CHEMISTRY BUILDING i

LABORATORY OF BASIC AND APPLIED NUCLEAR RESEARCH j i -

! YELLOW ALARM i

I (A)

IMMEDIATELY CONTACT ONE OF THE FOLLOWING OFFICE HOME IST. HOWARD BOEING 2ND. DR. HENRY SPITI 3RD. DR. JOHN VALENTINE W M l (B)

CONTACT THE UNIVERSITY OF CINCINNATI RADIATION SAFETY OFFICE OFFICE 558-4110 24 HOUR PAGER 249-6812, DIGITAL NUMBER INPUT RED ALARM (A)

IMMEDIATELY CONTACT ONE OF THE FOLLOWING OFFICE HOME IST. HOWARD BOEING 2ND. DR. HENRY SPITZ 3RD. DR. JOHN VALENTINE (B)

DISPATCH CAMPUS POLICE TO EVACUATE OLD CHEMISTRY ROOMS:

620K, G, H, I, J, K, L, M, P, AND THE SURROUNDING HALLWAYS (C)

CONTACT UNIVERSITY OF CINCINNATI RADIATION SAFETY OFFICE OFFICE 4 24 HOUR PAGERMDIGITAL NUMBER INPUT .

UNDER NO CIRCUMSTANCES SHOULD ANYONE ENTER THE NUCLEAR ENGINEERING LABORATORIES j ROOMS 504 & 504C i 4

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l SMEAR ~yxvuruuxE YUK Co-60 PINS' (example)

Pins will be individually surveyed in two parts (smear of the top l of the pin, i.e., top smear, and smear of the remaining parts of '

the pin, i.e., body smear). All smears will be taken at the bottom of pool.  !

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TOP' SMEARS i

1. Prepare one smear for each pin. Prepare " smear" by using a tube w'ith interior diameter (ID) slightly larger than the l outer diameter (OD) of the pin. Line tube with thin piece of foam. (note: overall ID of " smear" should be approximately equal to but not less than the OD of the pin.)

2. Prepare a log sheet to record smear number, pin ID and sample .

results.

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3. Using long finger type handling tool (~12 ft.), grasp " smear" and lower, open end down, to top of pin to be smeared.

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4. Gently push " smear" down over pin top so foam completely covers top of pin.

5. Twist " smear" through several revolutions (~4) while maintaining a gentle downward pressure.

6. Slowly pull " smear" to surface of water and cap. ,

7. Perform the above procedure to all pins keeping track of which " smear" belongs to which pin.

8. Seal " smears" in individual plastics bags.

9. Count " smears" in a well detactor coupled to a multichannel analyzer (MCA) or other instrument capable of detect!.ng and quantitating Co-60.

BODY SMEARS This procedure requires two people, one to handle pin and one to handle smear.

1. Prepare one smear for each pin. Prepare " smear" by using a tube with interior diameter (ID) slightly larger than the outer diameter ('

O D) of the pin. Line tube with thin piece of foam. (note: overall ID of " smear" should be approximately equal. to but not less than the OD of the pin.)

. . _ . _ . . . _ _ _ _ ___m.-.. ._ _ _ . _ . . _ . _ . . . _ . _ . _ . . _ _ . - _ . . _ . _ . _ _ _ _ _ . . _ . . _ _ _ _ _ .

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2. Prepare a log sheet to record smear number, pin ID and sample  !

results. ]

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-3. Attach " smear" to long metal pole, open end up,.and lower to L bottom of pool.

4. Using long finger type handling tool, gently lift pin by top and insert into " smear" until the body of the pin is completely encase by the smear.

5. Twist pin through several revolutions (~4). while maintaining a gent,le downward pressure.

6. , Pull pin out of " smear" and replace in holder. ,

7. Slowly pull'" smear" to surface and place in large pan.

8. While wearing protective gloves, remove foam from holder and put into sample vials and cap.

9. Perform the above procedure for all pins documenting which

" smear" belong to which pin.

10. Seal each foam piece from the " smear" into individual plastic bags. .

11. When all " smears" have been taken, count each of the foam pieces in a well detector coupled to a multichannel ana'lyzer .

(MCA) or other instrument capable of detecting and quantitating Co-60. ,

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ATTACHMENT C (J.L. Shepherd Irradiator Sample Operating Procedures) 1 1

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OPERATING INSTRUCTIONS NOTICE: IF AT Aiiv TIME Tills IRRADIATOR MALFUNCFIONS, IMMEDIATELY REMOVE TIIE UNIT FROM OPERATION, PADLOCK TIIE DOOR LATCII AND CONTACT J.L. SIIEPIIERD & ASSOCIATES FOR INSTRUCFION.

Although not related to radiation safety, the major hazard to be encountered in the use of this irradiator is the formation of spatulated fingertips. This will occur if the door is closed before the operator's hand is completely removed from the door / cavity interface. All users should be instructed in this regard.

1. System Activation.

Plug the power cords (control panel, turntable and compressor, as necessary) into the 115 Volt AC outlet. Turn control panel on. Ascertain that the Xetex 520A radiation monitor is tumed on and that the air system is connected and that incoming air pressure is a minimum of 60 psig.

The Xetex 520a Source Monitor is an integral part of the Mark I Irradiator Safety Interlock System. A 2-wire cable from the Mark I control panel is attached to the N/C terminals on the back of the Xetex 520A terminal block. The monitor MUST BE tumed on (on/off switch) &

functioning properly for the source to be raised to the "lRRADIATE" position. If the E.R.L.s l exceed the preset limit on the monitor (see Xetex 520A Monitor manual), the source will remain or return to the " SAFE" position. If the monitor i:: not working properly, take unit out of operation and contact J.L. Shepherd & Associates.

NOTE: XETEX 520A Source Monitor must be ON" for the Mark I Irradiator source to be operational.

NOTE: The source operating system and irradiation chamber door are locked by spring loaded bolts. These bolts can only be actuated when power is applied and the necessary interlock switches activated; therefore, it is impossible to raise the source or open the door unless the power is on. It is impossible to raise the source without air pressure or low pressure, as indicated by the " Low Pressure" light on the control panel.

2. Door Operation.

The Mark I irradiation chamber door is equipped with a completely independent mechanical pressure switch, in addition to the electro-mechanical interlock system. The mechanical

! pressure switch (200 lbs. operating pressure) is actuated only when the chamber door is completely and fully closed. In the event of catastrophic malfunction of the electro-mechanical interlock, this system will cause the source (s) to immediately drop to the fully shielded "OFF" position if the door opens as much as 1/16" from the fully closed l position, eliminating the possibility of radiation exposure.

( A. Opening the Door.

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To open the door, the following procedure must be followed:

(i) Push the " DOOR OPEN" switch (mounted at the top left side of the chamber / door). A sharp sound will indicate that the bolt has been actuated. ,

l (ii) While pushing the " DOOR OPEN" switch, operate the door handle. The door will i now open normally.  ;

i DO NOT OPERATE THE DOOR HANDLE UNLESS THE " DOOR OPEN" SWITCH IS BEING PUSHED. This will cause the door bolt to bind and fail to  !

release. 1 If the door handle is inadvertently operated when the " DOOR OPEN" switch is not being pushed and the door bolt becomes jammed, proceed to REMEDY in following l

section to open the door.

l NOTE: The roller section of the fixed part of the door latch is adjustable and may l require adjustment after prolonged use. To adjust this roller, proceed as follows:

l Loosen the 7/16 hex bolt on the top of the fixed part of the latch. The roller assembly l is then adjusted by rotating the wheel (which has screwdriver slots) at the rear l underside of the fixed part of the latch clockwise to move the roller section out or l counter-clockwise to more it in. After adjustment, secure the hex bolt.

l l The roller section should be adjusted so that the tang section of the latch is firmly L engaged against the roller at full (or almost full) extension of the tang when the door is firmly closed by pushing either the door or handle.

l l B. Closing the Door.

i When closing the door, do NOT grasp the handle. Push on the handle without grasping it and close the door firmly.

If your unit is provided with a "U" shaped handle, use this handle only for closing door. <

i l NOTE: DO NOT PRESS THE " DOOR OPEN" SWITCH (MOUNTED AT THE

( TOP LEFT SIDE OF THE CHAMBER DOOR) WHILE CLOSING DOOR. IF THE j DOOR WILL NOT CLOSE WITHOUT PRESSING THIS SWITCH, THIS I INTERLOCK IS MALFUNCTIONING, UNIT SHOULD IMMEDIATELY BE TAKEN OUT OF SERVICE AND MANUFACTURER CONTACTED.

l The rationale for this is that the tang on the door handle must be fully engaged );

against the roller on the top part of the latch or sufficient pressure (caused by the weight of the door) will not be exerted on the pressure switch to permit the locking

bolt on the primary interlock to engage the hole in the door tang. If the bolt does not engage the tang, the source (s) cannot be raised. There is also the possibility that the l

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l 9 bolt will engage as the door is closed which will permit the source (s) to be raised but the door will rebound slightly which will cause the bolt to bind so that the door cannot be opened after the exposure. Evidence of this is a buzzing sound when the

" DOOR OPEN" switch is pushed, rather than the usual sharp sound that the bolt has been retracted.

REMEDY: If this occurs, the remedy is to exert pressure on the door by pushing on it until the door bolt retracts when the " DOOR OPEN" switch is pushed. Evidence of this is a sharp noise rather than a buzz when the switch is pushed.

3. Selecting Timer Function.

Select either preset time or manual operation on the toggle switch below the timer on the i control panel.

A. Preset Time Operation.

l To preset time on the electronic timer, press the buttons above (to increase numbers) or below (to decrease numbers) the set of digits to the right on the timer. l I

In the Preset mode, aner the completion of any exposure, it is necessary to press the  :

" Reset" button before another exposure is initiated. If this is not done, the source cannot be raised.

Pressing the " Reset" button automatically resets the timer to the previously selected time. If preset time is to be changed the reset button must be pressed after each  !

change or sample will be irradiated (one time only) for previous irradiation time.

'Ihe timer starts at 0000.00 and counts up to the preset time. After the exposure is l' completed, the elapsed time (total irradiation time) is indicated on the LED readout (len illuminated set of digits).

B. Inspecting a Sample During an Irradiation.

In either the preset or manual time mode, the LED time readout starts at 0000.00 and i shows the elapsed irradiation time. Ifit is desirable to inspect an experiment during l an irradiation, press the " SOURCE RETURN" button, on the control panel to lower '

the source to the fully shielded "OFF" position and open the door. To continue the experiment, close the door and raise the source. The timer will continue timing as soon as the source has been raised and will return the source to the "OFF" position either at the end of the total preset time (preset mode) or by pressing " SOURCE RETURN" button (manual mode), The "OFF" indicator light will be illuminated at the end of source travel.

C. Manual Timer Operation.

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To commence a manual irradiation, the " SOURCE RAISE" button, must be pressed.

The "ON" light will be illuminated when the source is fully raised. The elapsed timer will continue to show and add to the total elapsed irradiation time, no matter how many cycles are performed, until 9999.99 minutes. To reset the total elapsed irradiation time to 0000.00, press the " Reset" button.-

~ 4. Tumtable Selection and Experiment Set-up.

Select the turntable position and corresponding turntable for sample irradiation, using the isodose curves for dose rate and distribution.

Tumtable operation is controlled by a switch mounted on the turntable drive box, located on the left side of the irradiator.

Ascertain that sample is rotating properly before closing door. NOTE: Samples must be rotated to achieve the integrated dose as shown on the isodose curves; I minute (minimum) for the standard 6 rpm turntable motor rotation or 1/2 minute (minimum) for the optional 12 rpm, dual speed turntable motor rotation.

5. Sample Irradiation.

To expose the source, press the " SOURCE RAISE" button ON the control panel. The source should raise smoothly and automatically latch in the "ON" position. The "ON" indicator light will then illuminate. The irradiation chamber door must be fully closed to do this.

IN CASE OF ANY HANG-UP, OF THE SOURCE OPERATING SYSTEM, THE SOURCE SHOULD- BE RETURNED TO THE OFF POSITION, THE IRRADIATOR IMMEDIATELY TAKEN OUT OF SERVICE AND THE MANUFACTURER CONTACTED.

6. Source Retum.

The source may be returned to the fully shielded "OFF" position by either of two methods. At the expiration of the preset time period. Manually, by pressing the "OFF" button, which overrides the preset time mode.

IN THE EVENT OF ELECTRICAL AND/OR AIR PRESSURE FAILURE, THE SOURCE AUTOMATICALLY RETURNS TO THE FULLY SHIELDED "OFF" POSITION. THIS ELIMINATES THE DAMAGE TO THE SAMPLE IN THE IRRADIATION CHAMBER DUE TO EXCESSIVE DOSE. ELECTRICAL POWER IS REQUIRED TO OPEN THE CHAMBER DOOR; THERE IS NO EMERGENCY PROCEDURE FOR OPENING THE DOOR MANUALLY.

IN THE CASE OF ANY MALFUNCTION OF THE SOURCE OPERATION OR INTERLOCK SYSTEM, THE IRRADIATOR MUST BE IMMEDIATELY TAKEN OUT OF SERVICE AND MANUFACTURER CONTACTED.

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7. Safety Precaution.

He control panel is equipped with the following lights: " POWER", "OFF" AND "ON" Because of the design of the safety interlocks built into the irradiator, it is impossible to open the door when the source is totally or panially exposed or to expose the source when the door is open, except in the case of a major mechanical failure. The possibility of such a failure is very slight, because of the safety margins built into the mechanical components of the system. As an added precautionary measure to insure the safety of the personnel working with the irradiator, the manufacturer recommends the following: That the laboratory monitor provided with unit, or comparable instrument with an aural output or preset alarm level, be mounted, in close proximity, to the door of the irradiator.

8. ACCESSORIES A. ATTENUATORS The set of 5 attenuators are identified as X-2, X-5, X-10, X-50 and X-100. They are placed cumulatively (starting with X-2) against the source operating tube at the front of the irradiation chamber, and samples placed on Tumtable Position #3, to achieve the sample dose rate as described on the Isodose Curves. A 12" turntable may be used with up to X-100 Attenuators.

Each attenuator is provided with a threaded hole (near the top) in which a thumbscrew may be attached for easy manipulation. The thumbscrew must be removed before the next attenuator is added.

He attenuators have been finished with a clear lacquer. They may be resprayed as fmish comes off with use.

B. MODEL 302 ATTENUATOR The Model 302 Attenuator is placed against the source operating tube at the front of the irradiation chamber. Samples are placed on Turntable Position #3 to achieve the dose rate described on the enclosed Isodose Curve.

NOTE: The Model 302 Attenuator is not used with the set of cumulative Attenuators described in section 1.

3. MODEL 335 ADJUSTABLE COLLIMATOR The Model 335 Collimator System consists of an adjustable collimator that fits into the cavity of the Mark I.

The collimator is attached to the rolling table with two locking arms (tightened /untightened l

by an Allen wrench). CAUTION: Do not move the rolling table unless the collimator is locked down. The collimator is also on rollers, weighs approximately 300 pounds and is capable of seriously damaging anything it falls on.

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A rolling table is provided which aligns with the door opening and the base of the Mark 1, so i that the table top plate is parallel with the irradiation chamber floor. The table is equipped with six rollers, the center two are slightly below the plane of the other four so that the table ,

l may be readily rolled and turned.

To place the collimator in the irradiation chamber: Fully open the Mark I door Remove and l tumtables from the irradiation chamber.  ;

l If the collimator is to be used with the set of 5 Attenuators. Place Attenuators in chamber, per l

section 1. Place Model 335 with positioning fixture into the chamber. Roll the table so that. l

! the front of the table plate abuts the irradiation chamber floor. Untighten the locking arms, j and gently roll collimator into irradiation chamber, until the front of the collimator is snug with the source operating tubes. NOTE: removable T-handles are provided to position the collimator within the irradiation chamber. Both sides of the adjustable collimator are hinged.

ney are moved to the desired width by loosening the locking Allen screw and moving collimator to desired width and retightening. NOTE: the centerline of the opening (per the l Isodose Curves) is scribed on the bottom plate of the collimator. Measurements for each side are made equidistant from this point.

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ATTACHMENT D (J. L. Shepherd Irradiator Sample Emergency Procedures) l

i EMERGENCY PROCEDURES MARK I-68 IRRADIATOR '

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EMERGENCY NUMBERS Radiation Safety Office 558-4110.

Radiation Safety Office Tech-On-Call (24 hrs) l Digital Pager 249-6812 l

l- U.S. NRC Region III

! (708) 790-5500 J.L. Shepherd (818) 361-2361 FIRE

1) Vacate Area or use fire extinguisher.  ;

2) Sound fire alarm.

3) Contact fire department. Inform them of the situation including that radioactive materials may be involved.

4) Contact Radiation Safety.

5) Complete and submit incident report.

OTHER EMERGENCIES INVOLVING THE IRRADI ATOR

1) Have all personnel leave the irradiator room. j

2) Lock the door and prevent access to the area.

3) Contact supervisor and/or Radiation Safety.

4) Do not allow anyone to enter the area until a survey to determine radiation levels has been performed.

5) If radiation levels are greater than 5 mR/hr, access to the area is to be restricted I

to Radiation Safety Office personnel and/or persons designated by the Radiation Safety Office.

6) Complete and submit incident report.

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ATTACHMENT E (Example Experimental Procedures l

for PuBe Sources) 1 I

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Example experiments F_ oil Activation: Any of th'e sources may be used for foil activation experirnents. The source in placed in a neutron howitzer, a cylinder of paraffin 18 inches in diameter and 23 inches high with a 1.5-inch diameter hole in the center. The class makes gamma and neutron surveys at the top of the container and at the sides of the container before proceeding with experiment.

Neutron Source for Suberitical Reactor: Any of the sources is used as a neutron source in the subcritical reactor (license no. SUD-265). The source which is placed in the center of the subcritical reactor. The class performs a neutron and gamma survey prior to working around the suberitical reactor.

Neutron Source for the Graphite Siema Pile: Any of the source is use a neutron source in the graphite pile for diffusion length and Fermi age measurement. The class performs a neutron and gamma surveys of the pile.

Water Tank Experiments: A plastic water tank is used to measure neutron flux. Any of the PuBe sources are placed into the water tank. The class performs gamma and neutron surveys around the water tank.

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I ATTACHMENT F i

(Sample Emergency Procedures

for PuBe Sources)

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! Emergency Procedures (PuBe sources) ,

If any unusual occurrence arises in which there may be a possibility of a radiation hazard condition, the following procedures must be instituted IMMEDIATELY.

1. Personnel access to the affected area shall be restricted.

2. Contact supervisor, AU and Radiation Safety. Wait for assistance.

Radiation Safety Office: 558-4110 (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> digital pager) 249-6812

3. No further action except the continued exclusion of personnel will be taken until i the supervisor, AU and/or Radiation Safety arrives.

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4. Supervisor, AU and/or Radiation Safety will determine the extent of the  !

radiation hazard and appropriate action. I

5. Complete incident report. >

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'4 o UNITED STATES NUCLEAR RE2ULATORY COMMISSION o l l

l o REGloN til I g a 801 WARRENVILLE ROAD USLE. ILUNolS 605324351

• • • • • JAN 121999 l

Victoria R. Morris l Radiation Safety Officer University of Cincinnati 234 Goodman Street Radiation Safety Office M.L. 0591 Cincinnati, OH 45267-0591 l '

Dear Ms. Morris:

Enclosed is Amendment No.12 which terminates your NRC Material License No. SNM490 in accordance with your request.

If you have any questions or require clarification on any of the information stated above, you may contact us at (630) 829-9887.

Sincerely, Original signed by Charies F. Gill Materials Licensing Branch License No. SNM-490 Docket No. 070-00539

Enclosure:

Amendment No.12 To recohre a copy of this document, indicate in the box: "C" = Copy wrthout stachrnentrenclosure "E" = Copy wnh

~~e te n uo n OFFICE DNMS/ Rill _ l5 DNMS/ Rill l l l

, NAME CGill(@

l DATE 01/ TE799 OFFICIAL RECORD COPY I

~

CONVERSATION RECOMU - '

nue oATe 1:00 p.m. 11/04/98 2:00 p.m. 11/13/98 O wsT O CONreRcNCe x retePHONe mCouiNo x OuroOiNo NAMe OF PcRSON(S) CONTACTED OR IN CONTACT ORGANIZATION (OFFICE. DEPT ETC ) TetePHONe NO.

Victoria Morris /RSO University of Cincinnati 513/558-4110 SUBJECT

1. University of Cincinnati,34-06903-09,304240, MS-15, on 11/04/98.

University of Cincinnati,34-06903-05,304239, MS-15, on 11/04/98.

2. University of Cincinnati,34-06903-11,304241, MS-15, on 11/13/98.

Univeislty of Cincinnati,34-06903-05,304239, MS-15, on 11/13/98.

University of Cincinnati, SNM-490,304242, MS-15, on 11/13/98.

SUMMARY

RE: A-License No. 34-06903-05, add material to license T-License No. 34-06903-09, transfer all material to "05" license, then terminate this license A-License No. 34-06903-11, transfer one item to "05" license, then delete item from this license T-License No. SNM-490, transfer all material to "05" license, then terminate this license On 11/04/98, I called Ms. Morris to inform her that we needed additional information before we could continue our review of her request to transfer all material to the "05" license from the "09" license, then terminate the "09" license. Specifically, we needed additional commitments regarding the underwater irradiator's (1) fire protection, (2) intended use of the material, (3) facility diagram, (4) more details regarding the criteria to be used regarding unescorted individuals, and (5) the criteria the RSC will use to approve authorized users.

On 11/13/98, I called Ms. Morris to inform her that we also need further information before we could continue cur review of the rest of her request. Specifically, we needed an additional commitment regarding the criteria the RSC will use to approve authorized users for the J. L. Shepard Irradiator. Ms. Morris said that she would issue her response letter by November 17,1998.

ACDON ReQUIREa Ms. Morris is to submit the response to the above concems by November 17,1998.

NAME OF PERSON DOCURIENTINo COINERSATION 860 NATURE oATE Charles F. Gill 11/04/98,11/13/98 ACTION TAKEN Ms. Morris' 11/17/98 letter was received on 11118/98. It was acceptable.

SeoMATuRE TrTts oATE Senior License Reviewer 11/18/98 uc304239.crd

1. panig4 UNITED STATES NUCLEAR REGULATORY COMMISSION 8 REGION lli U h 801 WARRENVILLE ROAD

1. tlSLE, ILLINOIS 605324351 k.....,/ August 3,1998 Victoria Morris, M.S.

Radiation Safety Officer Cincinnati, University of Mail Location 0591 231 Bethesda Avenue Cincinnati, OH 4E267-0591

SUBJECT:

ACKNOWLEDGEMENT OF CORRESPONDENCE (Letter Dated 07/24/98)

Dear Licensee:

l In response to your request, we have completed the initial processing, which is an administrative review of your application for a(n):

New License X Amendment Renewal X Termination Auth User (Amendment not required)

Other No administrative deficiencies were identified during this initial review. However, it should be noted that a technical review may identify omissions in the submitted information.

It appears that your request is routine (see 1-3 below, as applicable).

1. New and amendment actions are normally completed within 90 days, unless we find major deficiencies, or policy issues requiring central program office assistance.

2. Renewal actions are normally completed within 180 days, however, under timely filing -

(before expiration), you may continue to operate under your existing license.

3. Termination actions are normally completed within 90 days, unless confirmatory surveys following decontamination / decommissioning activities are involved.

A copy of your correspondence has been forwarded to our Licensing Fee and Debt Collection Branch (301/415-6097) for approval of the fee category and amount, if required.

We will try to complete your request as soon as practicable. Any correspondence about this request should reference the control number. Please direct any questions conceming your request to the Materials Licensing Branch at (630) 829-9887.

Materials Licensing Branch SNM-490 070-00539 Termination 304242 34-06093-11 030-18949 Amendment 304241 34-06903-09 030-11331 Termination 304240 34-06903-05 030-02764 Amendment 304239