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Application for Renewal of License SNM-0602,authorizing Possession & Use of 3 Ci Po-238/Be Sealed Source Model 2723. Fee Paid.Supporting Documentation Encl
	ML20247A102
Person / Time
Site:	07000659
Issue date:	08/24/1988
From:	Covington W; NEWPORT NEWS SHIPBUILDING & DRY DOCK CO.
To:	;
Shared Package
ML20247A089	List: ML20247A084; ML20247A102;
References
	252375, NUDOCS 8907210133
	Download: ML20247A102 (50)
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1 THf5 95 AN APPLICATION FOR (Chere appecumsse neW 2 NAME AND WAikthG ADDat15 Of APPUCANT (Mrw.ela C.ael Newpo*t News Shipbuilding A Nta uCENil SNM-602 Radiological Control Department T

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C. mths.At or uCENst NUMum SW-602 4101 Washington Avenue Newport News, VA 23607 3 ADDmissitsi WMtFit LICEN5tD MATim8AL plLL SE U$tD OR PO15t&5ED t

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19.1h4518MAhAGtMENT.

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Manager, Radiological Control Department N/Pf mA. d' a T. Covington t.

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y 8907210133 880923 REQ 1 LIC70 SNM-0602 PDR FOR hkC List ONLY 19858 08 eit sit LOG f i t C all008'

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.' ATTACHMENT l'-

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1.

Newport. News Shipbuilding,'4101-Washington _ Ave.i

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l Newport News,cVirginia,:23607-

..e 2.'. Onboard ' U. S.

Navy nuclear powered ships.

p 3.

Temporary job sites of. licensee.

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LITEM: 45' ATTACHMENT 2

'a.

b.

c.

Rcd io is otope --

Chemical and/or Physical Form'

' Quantity A.

Plutonium 238/Berylllum-Sealed _ Neutron ~ Source Monsanto Not to. exceed Corp. (Neutron Standard Source.

3 curies per model"2723) source Total weight of, Plutonium = 0.212 grams

. Weight of PU-238 - 0.170 grams

. Pu-2 38 wt% = 8 0.17 Pu-239 wt% = 15. 5 5 Pu-210 wt% =

2.72' Pu-241 wt% =

1.05 Pu-24 2 wt% = 0. 4 9 8 A trace-amount of Pu-236, 1.0 ppm, is contained in the sealed source.

Criticality is 'not possible with the subject special nuclear material.

W_________

ITEM'.46

~

- 1 ",

ATTACHMENT Purpose.' for which ' licensed material'will be used :

j A.-

Calibration)of' radiation detection instruments-with~a

{

range of 0 to 200;mr/hr.-

1 B.

Itlis requested that~the license-be issued for.the maximum allowable time.

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. ATTACHMENT'45

. Newport News ' Shipbuilding. is ' incorporated in : Virginia.

Its principal 1 office.'is located atz 4101 Washington Avenue, Newport News,. Virg inia. : The names, addresses and citizenship of its l.

principal officers.-are as follows:

OFFICE NAME ADDRESS CITIZENSHIP Pr es iden t E. J.

Campbell-160 Yeardley. Dr ive U.S.

Newport News, VA 2' e'

Executive.

W.

R.

Phillips 102 Goose' Creek Road U.S.

Vi ce-Pr es iden t Yorktown, VA 23692 Corporate C. E. Whitman 525 Pagan Road U.S.

Secretary Smithfield, VA 23430

-Treasurer M. W.

Appel 29 Ensigne Spence U.S.

Williamsburg, VA 23185 Responsible Individuals 1.

C. T. Hill - Radiological Control Manager, RSO 2.

G.

E.

Squires - Radiological Control Manager 3.

F. J. Delamain - Radiological Control Manag' r )I e

4.

J. W. Staton - Radiological Control Manager s'

)

5.

B. W. Milliken - Instrument Calibration Supervisor (

6.

A.

C.

Clendenin - Senior Instrument Calibration Technician 7.

M.

P.

Sites - Senior In strument Calibration Technician 8.

R.

K. Lamb - Senior Instrument Calibration Technician >f 9.

J. F. Bledsoe - Senior Instrument Calibration Technician)(

10.

J.

R. Schumacher - Senior Instrument Calibration Technician >(

11.

T. F. Kelly - Instrument Calibration Technician 2(

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&2 Ri I R I

ITEM'#7 ATTACHQENT 4 Additional Training

1. All Senior Calibration and Calibration technicians are required to read and understand the manuf acturer's most recent servica manuals and instruction sheets in a timely manner following receipt at NNS, for each instrument serviced by the applicant.

2. All Senior Calibration and Calibration technicians are required to follow the current applicable NNS calibration procedure for calibrating any instrument.

NNS instrument calibration _ manual _w113 r e f l e c t _ r evi s i on s_ t o. m an u f a c t u r e rl s._ c a l i br a t.i on_prpce.d. u r e s_ p tomp_t ly e

f oll ow ing_t h_e i r._ r e ce ip t_a t_N N S.

3. All Senior Calibration and Calibration technicians are trained in the use, maintenance and calibration of all equipment currently operated by the Radiological Control Calibration Sectior..

4. All Senior Calibration and Calibration technicians are required to read the latest operating and emergency procedures for the Calibration Facility.

5. All Senior Calibration and Calibration technicians must participate in continuous on-going refresher training for new and updated information as the information becomes available.

l l

l

U r

b i

ITEMLf81

- l- -

ATTACHMENT 5 9

Training for Individuals. Working in or Frequenting Restricted Areas I.

Course Outline-A.

Radiation Sa fety 1.

Limits /NNS control level 2.-

TLD badges 'and dosimeters 3.

Actions for~ of f-scale / lost / damaged dosimeters and/or lost TLD badge 4.

Keeping t' rack' of exposures -

5.

Signs and barrier requirements 6.

Potential sources of radiation

-7.

Accountability of radioactive material B.

' Contamination Control 1.

De finition of contamination and limits 2.

Potential sources of contamination

.3.

Control and prevention of contamination 4.

Decon tamination C.

Waste Dispocal 1.

Reducing. waste 2.

Disposal of waste D.

Instrumentation 1.

Purpose for use of each type of instrument 2.

How to use each type of in str umen t E.

Operating Procedures for Calibration Facility F.

Dnergency Procedures for Calibration Fac il ity G.

Minimizing Exposure Methods H.

NNS Radiation Safety Program II.

Duration of Training shall be Minimum of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />

ITEM #8 ATTACHMENT 5 III.

Only " Responsible Individuals" are Qualified Instructors for the program identified in part I of attachment 5.

IV.

A list of trained personnel and the records of their training shall be kept by the Radiological Control Depar tmen t.

l V.

Other personnel who require occasional access to restricted areas and who enter these areas for observation or similar purposes, shall have training consider $ d necessary by the licensee for the conditions expected to be encountered.

When individuals are not trained in accordance with part I and II of attachment 5, these personnel shall be escorted by " Responsible Individuals" when entering these areas.

I I

ITEM-69L ATTACHMENT 6-Facilities and' Equipment A.

Calibration Facility The Calibration Facility is located in the southwest' end of building 123._ It is 13 feet wide by 75 feet long and Lits _ arrangement is shown on page 3 of attachment #6.

The. facility-is adjacent'to a. storage. warehouse on-its

+

northeast side and a roadway on its southwest side.

The ' Calibration Laboratory has two restricted areas,.

the Source Storage and Use Area and the Calibration Room.

(The Calibration Room is a restricted area _ only. when a source is removed from storage for use).

Access to.these

. areas is controlled.with secured doors and : rope barriers.

The Source Storage and Use Area also has:an electric eye audible alarm which activates when entrance to 'the' area is attempted.

This _ electric eye serves as a notification to personnel when entering a high radiation area as. required by Title 10 CFR part 20.203.

When the Spurce Storage and s

~

wA. s.

A (Use-Area is_yoste.d as_ a_ high_ ridlaEio'nlareajlEdoors GwY@{%p" "' (jleading..to_ th' Calibration _ Room are_ lock Qg LMM* r4 p.reven t :unauthor ize_d. a_cces.s.

Refer to page 3 of attachment

,a(g dM^%

6.for added description.

w w#

The1 ource Storage and Use Area contains the S

calibration table and the source storage pit._

The I

calibration table is used as a range to ensure the appropriate distance between an instrument being calibrated and a calibration source.

The table measures distances f rom on contact with the source up to 500 centimeters away.

The source storage pit is recessed in the ground and has 6 inch concrete sides and bottom with a lid that contains 1/2 an inch of lead for shielding.

This lid is equipped with a lock to prevent access or unauthorized removal of licensed mater ial.

The pit contains all license caterial greater l

than 100 microcuries per source.

l.

Contained within the soutee storage pit are shielded l'

source storale containers which contain licensed material with activi'y amounts greater than 100 ticrocuries.

These containers are snielded to reduce the radiation levels and l

personnel exposure encountered when the sources are in storage.

Al so each source storage container containing 100 microcuries or more of radioactivity may only be removed f ron storage under direct supervision of a _qualRied_spung_e ?

g operator. Containers with less than 100 microcuries of L

radioactivity are provided with suitable f asteners to prevent accidental loss of the material.

L ITEM #9 ATTACHMENT 6

~

L 1

In addition, each source and source storage container has attached a durable tag (at least one inch square) bearing the magenta and yellow radiation symbol and the

~

instructions CAUTION (or DANGER) - RADIOACTIVE MATERIAL -

DO NOT HANDLE - NOTIFY CIVIL AUTHORITIES IF FOUND.

The l

source serial number, isotope and activity is stated on the tag.

At temporary job sites, restricted areas will be established with rope barriers at radiation levels of 2 mr/hr or less and signs posted on the rope barrier will have the yellow and mr. genta radiation emblem with the words CAUTION - RADI ATION AREA - DO NOT ENTER WITHOUT RADCON PERMISSION.

If this restricted area is to be used for more than thirty days, then entrances to the area shall be equipped with locks and control devices with audible alarms and lights.

The entrance shall be posted with a sign reading WARNING - RADIATION AREA WHEN LIGHT IS ON.

If a high radiation area exists when using the source, controls to limit access and posting of the area are required in accordance with Title 10 CFR part 20.203.

The Calibration Facility is also equipped with source handling tools for handling sources.

In case of a spill or release of contamination a " spill kit" is also located at the facility.

i l

1 I

I I

i i

Itcr #9 ATTACHMENT #6.-

~

Buildine 123

.1. 12" Concrete shielding 3

2" of l l-

2. 6" Concrete shielding l/

canned

/

'3. Source storage cabinet l

4 1ead

4. Source storage pit 3

5. Source location during use 7

6. Calibration table

7. Electric eye audible Source storage alarm and use area 1

1 6

W. Workbench IS. Instrument storage

\\

gl_ \\

Notes:

1.

Calibration room is a restricted

~~~~--""*E=~

area when source is.in use position.(location 5) 2.

The facility is on the ground 2

W (S 2 floor and there are no tunnels under the facility.

3.

The ceiling above the source ea storage and use area contains 5" Calibration of concrete shielding.

j Room 4.

The rope barrier that restricts j

Is access to the source storage and l!

use area is also posted as a high W

radiation area when the situation exists.

Q 5.

The southwest door leading to the calibration room and the southern door entrance into the office area Office are normally secured.

I k

-O-Flashing red light

\\

--- -Repe barrier

ld-L, ITEM #10

-1' ATTACHMENT 7

[-.

Radiation. Safety Program

~I.

Personnel Monitoring Equipmen t A.-

At NNS, personnel monitoring is accomplished with pocketichamber. dosimeters and TLD badges ( gamma and neutron TLD badges).

The Environmental / Radiation Health Secti' n of the Radiological Control Department-o

.at NNS is; responsible for distributing and collecting L

. gamma 'and neutron.TLD badges and processing gamma -TLD-badges. -Thelprocessing of gamma TLD badges is performed using the Harshaw/Filtrol 8000C ' or-the Victoreen Model' 2800 TLD Readers.

(Neutron dosimetry is currently processed by the U. S.

Navy' Medical Command).

Gamma TLD badges _are_ processed at_least

. mon thly.. for processing,approximately_every_six weice Neutr,on1TLD badgqs are.r.emoved from serv z

and sent e1 B.

Records' of day-to-day gamma exposure mon itor'ing 'are.

maintained from cumulative exposures of direct reading ion chamber dosimeters.

These dosimeters are response checked to. ensure ~ their measured exposure is +20% to

-10% of, their actual exposure when exposed to a calibration source.,The ranges of the dosimeters routinely used for monitoring whole body exposure are 0-200 mr and 0-500 mr.-

< ITEM /#10:

-2' ATTACHMENT 7 LII.: Radiation Detection [ Instruments and ' Instrument Calibration A.

RADIATION DETECTION INSTRUMENTS

~

NUMBER RADIATION SENSITIVITY

' TYPE AVAILABLE DETECTED RANGE USE

1. Eberline E-130/HP-210

~19 Be ta and

0-50,000 CPM Survey and Portable thin-window Gamma in-3 ranges.

' mon itor ing

-GM'surveymeter{ window

.of personnel is.1. 2-2.0' mg/cm ),

and areas t 2. - Eberline E-140/HP-210 60 Be ta and 0-50,000 CPM Survey and Por ta ble' _ th in-window Gamma

.in 3 ranges mon itor ing -

GMsurvey' meter { window of personnel

(

is 1. 2-2.0. mg/cm )

and' areas 3.

Eberline RM-3A/HP-210 52 Be ta and 0-50,000 CPM Sur vey 'and '

RM-3 C/HP-210 Gamma in 3. ranges mon itor ing RM-3C-4/H P-210 ~

of personnel.-

Th in-win d ow '

and swipe G.M. survey meter counting

-(windgw is 1. 2-2. 0

.mg/cm )'

4'. Eberline.

.c. ' 14/H P-210 23.

Be ta and 0-50,000 CPM. Survey and

' RM-15/HP-210 Gamma in 3: ranges mon itor ing Thin-Window of personnel' G.M.

survey aeter and' swipe counting

-(windgw)' is 1. 2-2. 0 mg/cm Ti l

S. Tracerlab SNOOPY" 32 Ne u tron 0-2000 Ar ea. s ur vey NP-1, NP-2 Portable mrem /hr in instrument 3 Proportional.

4 ranges L

BF L

survey meter

6. AN/PDR-27 Portable 94 High 0-500 Survey and Thin-window high and range mrem /hr in mon itor ing low range GM tube

Gamma, 4 ranges of. objects survey' meter (window Low range and areas is mica 0.0005 inches Be ta and thick)

Gamma 7.

Eberline E-510/HP-200, 13 uamma 0-20,000 Survey of 220-Portable GM survey.

mrem /hr in objects and meter 4 ranges areas 8.

Eber l ine E-53 0 N/H P-20 0, 28 Gamma 0-20,000 Survey of l.

.220 Portable GM mrem /tu in objects and survey meter 4 ranges areas

ITEM (10

- S-ATTACHMENT 7

~

NUMBER RADIATION SENSITIVITY TYPE AVAILABLE DETECTED RANGE USE 6

9. Eberline PAC-ISA/AC-3 16 Alpha 0-2x10 CPM Survey and Portable Scintillation ir. 4 ranges monitoring survey meter of personnel (mylarwingow and areas 0.85 mg/cm )

T

10. LUDLUM/Na I probe 13 Ga mma 0-50,000 CPM Survey of Portable, Scintillation in 3 ranges objects and survey meter

' areas 11.Teletector 14 Beta and High range Survey of Portable thin-window Gamma 0-1000 Rem /hr objects and high and low range in 3 ranges areas GM tube survey neter and low (window is mica 0.0005 range 0-50 inches thick) mrem /hr in 2 ranges 9

12.NUMEC 3

Alpha, 0-1x10 Swipe PC-3B Be ta and counts

counter, Gas flow Proportional Gamma scaler scaler and detector 6

13. Eberline MS-1, 2 and 3 17

Beta, 0- 1x 10 Swipe scaler Gamma and counts

counter, Neutron scaler 6

14.NUMEC 38 Beta and 0- I x 10 Air GP-1 and GP-5 APD Gamma counts Particle GM, air pump, De te c tor survey meter 6

15.LUDLUM/NaI detector 3

Gamma 0- 1x 10 Sample and Model 2500 counts Counting Scaler /ratemeter standard scaler 16.Bendix Model 550 64

Beta, N/A Air Sampler H i-Vol ume Gamma and Air Sampler Alpha B.

All instruments.in use are calibrated at least once every three months.

(Portal Monitor "Priska11" frisker booths are calibrated once every six months).

100 CPM = 0.03 mrem /hr for Co-6 0.

i t

1000 CPM = 0. 01 mrem /hr f or Co-60.

tt The high range (0-2000 mr/hr ) is not r.o:nally calibrated lw____--____.

?:

l ITEM (10

-4.

ATTACHMENT 7 l

l III.: ' Operating and. Emergency Procedures 1

A.

De f initions'

-l 1.

Control Area - Any-area to.which access is controlled.

for radiological safety purposes.

2.

Sealed Source - Radioactive material. permanently' bonded or fixed in a capsule or matrix designed to: prevent release and dispersal of the radioactive material.

1 3.

Contamination - Loose particulate radioactive material in an undesirable location.

4.

Source Operator - An individual ' who has satisf actoril'y completed 1the formal indoctrination course insthe use'of radioactive ~ sources, demonstrated competency in the safe use of radioactive sources.and. associated equipment and is responsible for the safe use of such sources and equipment.

5.

Accident - Any occurrence by which control of the source is lost or which may cause the source to be ruptured.

B.

General Instructions and Regulations 1.

With respect to license SNM-602, these instructions and

. regulations supercede all previous instructions concerning the protection against radiation hazards at NNS.

2.

These instructions and regulations are a part of NNS license to handle and use radioactive material used for instrument checks and calibration. No modification or.

deviations from these instructions and regulations shall be permitted.

3.

Requirements invoked by Title 10 Code of Federal Regulations will'be adhered.to for activities involving this license and the material possessed under this license.

4.

NNS has placed in effect the provisions of NAVSEA 389-0288 " Radiological Controls for Shipyards" for the control of radiation and radioactivity associated with the Naval Nuclear Propulsion Program.

5.

Messers C. T.

Hill, G.

E.

Squires, F. J.

Delama in,

'J.

U.

Staton, B.

W.

Milliken, A. C. Clendenin,

.M.

P.

Sites, R.

R.

Lamb, J.

F. Bl edsoe, J.

R.

Schumacher and T. F.

Kelly a.re _thyse_individua.ls directly_ responsible to.the Nnc.for.the. use_and.

securitjy of _li. censed material _and f or_. the.ov_eral_1 Ra d i a t i on,. Sa. f e.ty.._Pr og ram.

ri#10 ~

ATTACHMENT 7

. w 3

6.

The Radiation ' Safety - Officer is. responsible for ensurin g, that regulations concerning entrance into control areas are complied with.

7.

TLD badges (Gamma and, if necessary, neutron) and d ir~ect

- reading dosimeters must be worn.by ' all personnel inside the' calibration. room when it is established as.a.

radiation area in accordance with 10 CFR 20.

8.,

The. number of personnel inside-the calibration room when'it is a restricted area must be kept at.a i

minimum.

9.

Any time any source is removed from the calibration f acility, the source operator or user.must sign a

~

utilization logbook for signature. custody of the.

source (s).

10. All_ source _ operators, prior t_o using a' seal _ed souree in ' excess of_one_ mil.1,1 curie, shill s uccess f ully._ comple te... writ t.en,_. oral _and_prac t ical examin ations..1and.. s ign._a _ statement ver ify.ing..they have read _and_unders tand_the_NNS_Ra diat ion. Sa f ety

. Program.

The written examination and : signed statement will be maintained on file by the Radiological Control Depar tmen t.

11.

Only qualified source operators will be permitted '

to use a source in excess of one millic'urie.

~

i 12.

All personnel authorized to receive ' dosimetry equipment shall have proper periodic physical exams.

i 13.

The personnel under this license shall not exceed:

l 1

i a.

Whole body 1250 mrem / year j

b.

Hands, feet and ankles 15.8 75 rem / quarter j

c.

Forearms 5.75 rem / quarter i

d.

Skin of whole body 2.375 rem / quarter 1

i Prior to any individual exceeding the above levels, j

written approval shall be obtained from the Manager i

of Radiological Control De p ar tmen t.

At no time shall anyone exceed the limits set forth in 10 CFR 1

20.

NOTE:

For b, c and d above, the exposure limits listed are in excess of whole body exposure.

14.

hur individual working in or frequenting any portion of a radiation area shall be kept informed i

of the storage, transfer, use and the radiation levels of radioactive material in the area.

I 1

ITEM (10 ATTACHMENT 7 15.

Any loss of radiological control or excessive exposure to personnel involving licensed material shall be reported to the Radiation Safety Officer immediately.

16.

The calibration of radiac instruments is the responsibility of the RadCon Instrument Calibration Section and shall be performed by Instrument Calibration personnel only.

17.

The NNS RadCon " Calibration Manual for Radiation Detection Instrumentation" shall be followed without deviation whenever an instrument is to be calibrated.

(The " Calibration Manual for Radiation Detection In strumentation" contains explicit safety, source handling, calibration and record keeping instructions concerning the calibration of instruments.)

18.

Any instrument that is not calibrated on all scales shall be prominently marked to assure only calibrated scales will be used.

19.

All_ instruments in_use (except Portal Monitors and portable air samplers).at NNS _are...requir_ed.to_ be

. calibrated at least every three months wheLirtuse _and

_. in str umen t _ repair.. (Portal Moni;or "Friskall"

. aft _er_each frisking booths and portable air samplers are calibrated at least once every 6 monthn,)

20.

NNS " General Safety Manual" precautions must be obeyed when working with instruments utilizing high voltages.

21.

Dangerous and defective instruments must be properly tagged to ensure they are not used.

22.

Electronic alignment and linearity checks for instruments shall be performed by Electronic Ir.strumen t Shop personnel in accotdance with manuf acturet's technical manual.

23.

NNS calibrates all survey instr uments to within fl0% of the calculated or known values for each point checked on each range of the survey meter.

24.

Portable gamma / beta-gamma survey instr uments shall be calibrated with a Cobalt-60 sour ce in open air with three check points on each scale.

An alternative method for calibrating instruments which measure in events per unit of time may consist of calibration with a pulse generator, followed by a response source check to a radiation soutce.

( Explicit instt uctions contained in the NNS RadCon " Calibration Manual for Radiation De te c t ion Instrumentation" will be adhered to.)

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ITEM #10 ATTACHMENT 7 25.

Neutron survey instruments shall be calibrated with a neutron source in open air with three check points on each scale.

(Explicit instructions contained in the NNS-RadCon " Calibration Manual for Radiation Detection Instrumentation" will be adhered to.)

26.

Scalers shall be calibrated by running a voltage plateau to establish the operating voltage.

Efficiency is then determined with a Co-60 source or Th-230 source depending on the isotope to be detected. (Explicit instructions contained in the NNS RadCon " Calibration Manual for Radiation De tec t ion Instrumentation" will be adhered to.)

27.

Friskers equipped with HP-210 probes-shall indicate a predetermined value when exposed to a Technetium-99 source mounted in a calibration check board.

28.

Air particle detectors shall be calibrated with a pulse generator to determine proper linearity and gain control settings.

The rate of air flow shall be determined with an air flow calibration device.

Th e " f a il-s a f e" indicator lamp shall be checked for proper operation and the audible and visual alarm set point shall be checked for proper response at the indicated CPM in a low background area using a Co-60 check source.

Portable air samples shall be checked every six months, or whenever significant flow changes are expected, with an air flow calibration device to determine the rate of air flow.

Six months calibration of air flow is not required if flow check devices installed on the instrument do not indicate significant change of flow.

(Explicit instructions contained in the NNS RadCon

" Calibration Manual for Radiation Detection Instrumentation"will be adhered to.)

29.

All records of instrutent calibration will be kept or.

file by the Radiological Control De pa r tmen t.

30.

All calibration sources are NBS traceable.

Sources ate certified to within 35% of the stated activity or dose t

rate.

31.

All sources, 1 millicurie or greater of radioactivity, shall be physically inventoried on the first working day of each month.

A report of the inventory is sent to the Manager, Radiological Control Depar tmen t and the Radiation Safety Officer.

32.

A quar terly inventory is conducted to account for all sour ces possessed under the license.

Records of the inventory will be kept by the Radiological Control De p ar tmen t.

The inventory includes the isotope, serial number, activity and location of each source and the date the inventory was conducted.

I ITEM 410 ATTACHMENT 7 j

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C.

General Calibration Method (Explicit calibration procedures for each instrument calibrated at NNS are contained in the 1

RadCon " Calibration Manual for Radiation Detection l

In s tr umen t a t ion ". )

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1.

Pre-calibration check a.

Mechanical j

1 (1)

Visually inspect instrument for physical I

damage, corrosion and/or defective parts.

(2)

Thoroughly clean as necessary.

b.

Operational (1)

Check proper operation of all switches, lights, etc.

(2)

Check audible response (if applicable).

2.

Typical Calibration Steps for Gamma, Beta / Gamma and Neutron Survey Instruments (Explicit calibration procedures for each instrument calibrated at NNS are contained in the RadCon " Calibration Manual for-Rad iation De tec t ion In str umen tation" ).

a.

Determine distances from a source that will give low, high and mid-scale readings for each range.

(Instruments which require other scale readings shall be calibrated in accordance with the RadCon

" Calibration Manual f or Radiation Detection In str umen t a t ion ". )

b.

Turn range selector switch to the lowest range and place instrument 'on the calibration cart.

c.

Align the detector tube with the source holder.

d.

Place the cart on the calibration table to the predetermined distance to give a mid-scale reading.

e.

Make any further adjustments prior to removal of source from storage.

(If the appropriate source is already in the source holder, adjust the holder for the instt ument being calibrated and omit step g. )

f.

Activate red lights and rope barriers.

Ensure all personnel in the area have pr oper dosimetry devices.

If a high radiation area will exist then ensure entrances are properly secured and electr ic eye audible alaria is activated.

g.

Remove sour ce f r om stora ge container and place in holder.

_________-a

Y ITEM-$_10

. ATTACHMENT 7 h.

Check-meter for' response 'within *10% of calculated

. reading.

Adjust potentiometer if necessary.-

1 1.

Move cart to check response of each reading on every applicable range.

j.

If the instrument can not be properly calibrated on all' appropriate ranges then tag the instrument for repair.

k.

Remove source from holder and return to storage container.

1.

Place a calibration sticker (with due date and initials) on the instrument.

m.

Complete all records of calibr ation.

E.

Calibration of Pocket Dosimeters 1.

Pr e-calibr at ion p%-

/,,70

- Dosimeters ar e checked for any physical damage.

. a..

/

a.

J

'GM4 b.

Dosimeters are checked for proper operation.

2.

Calibration a.

Determine the dose rate at a predetermined distance and the time of exposure for the dosimeters to receive the' required dose.

b.

Set the desired number of dosimeters at the predetermined distance.

c.

Align the center of the dosimeters' chambers with the source holdet.

d.

Activate red lights and rope barriers.

Ensure all personnel in the area have proper dosimetty.

devices.

If a high radiation area will exist then l

ensure entrances are properly secured and the L

electric eye audible alarm is activated.

e.

Remove sour ce f rom stor age containet and place in holder.

f.

Remove the sour ce f r om the holdet and place back into its storage container once the appropriate time has passed for the desited dose, g.

Dosimeters shall respond to calculated values from a calibration sour ce with a +20% to a -10%

tolerance.

For low range dosimeters, a drift check over a 24 hout period shall indicate a dtift of 2%

L

F ITEM.#10 ATTACHMENT 7-

?.

or less of the full scale reading.- For' high range dosimeters, allow a one hour drif t and record the l

value,'then allow an additional 24. hour drift.

The difference between the two readings shall be 2% or less of the full scale reading..

h.

If the dosimeters,cannot be properly calibrated, they shall be removed from service.

i.

Complete all records of calibration. :

F.

Survey Program Routine area surveys are performed weekly at the calibration facility.

The areas surveyed are. specific locations in the source storage - and use area (i.e.- top of i'

source storage pit and calibration table), the calibration room and office. The surveys performed are contamination l

swipe / scan surveys and radiation surveys.-

The limits of fixed or removable contamination set for release for unrestricted use of equipment or facilities is no detectable alpha contamination and <4 50puci/100cm2 beta-gamma contamination as measured with ' standard survey instruments.

Quar terly surveys are performed with the largest gamma source out of storage to determine the ef fect. of the radiation levels on working areas in or near the facility.. This is also accomplished with the largest neutron source.

The instrument serial numbers and measured levels obtained from the instruments for the surveys are recorded and maintained at the calibration facility.

G.-

Use of Shielding and Remote Handling Equipment The time involved transferr ing sources between containers and use locations is the period of time when the highest radiation dose rates are experienced.

It is imperative that the user has a completely thought-out plan of action before removing a source from storage.

If deemed necessary, a rehearsal shall be made with a dummy source.

During the transfer, personnel shall maintain as much distance as practicable between their bodies and the source.

Sources in excess of one millicurie shall be manipulated with remote handing devices.

These devices consist of one magnetic grappling rod which is approximately 6 f eet 4 inches in length and one mechanical grappling rod which is approximately 5 feet 6 inches in length.

Other similar devices may be used.

Sources of 1.0 millicurie or less shall be

ITEM (10 ATTACHMENT 7 TIME SHOULD THE SKIN OF PERSONNEL TOUCH THE ACTIVE OR EMITTING AREA / SURFACE OF A SOURCE.)

Any equipment required for the safe manipulation of sources, which is not in perfect working condition, shall not be used.

Such equipment shall be tagged " DEFECTIVE DO NOT USE" and the proper RadCon Calibration Facility personnel shall be notified of the conditions.

A report of the damages or defects shall be made to the Radiation Safety Of ficer immediately.

H.

Special Precautions for Handling Large Sealed Calibration Sources 1.

An appropriate shipping / storage container shall be used to transport sources in excess of one millicurie. This container shall provide enough shielding to prevent a radiation level in excess of 200 mr/hr on any exterior surf ace or a radiation level in excess of 10 mr/hr at one meter from any exterior surface.

2.

The Plant Protection Department shall be notified oy the source operator each time a source in excess of one millicurie is moved from a designated storage area or use area.

The following information shall be transmitted to the Plant Protection Department.

a.

Where the source is to be transferred.

b.

Estimated time the source will be at the new location.

c.

The name of the source operator making the move.

At the conclusion of the operations, the source operator shall advise the Plant Protection Depat tment that the source has been returned to its designated stor age ar ea.

3.

Source (s) in excess of one millicurie must be handled with remote handling devices.

4.

Source storage containers containing 100 microcuries or more of radioactivity may only be removed from storage under direct super vision of a qualified sour ce operator.

5.

Source stot age containet s shall be surveyed prior to removal of the source and af ter r eturning the source to its storage container to ensur e proper storage.

6.

If a source in excess of one millicurie is to be used outside of the Calibration Room, the source operator shall record the contact r eadings of the source storage containet prior to removal of the source from the container.

When the source is r eturned to stor age the survey will be performed again and compared to the I

initial sutvey to ensure propet storage of the source.

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5.

Source 1 storage: containers shall be surveyed prior-to removal 9f the source and af ter returning. the source to its storage. container to ensure proper storage.

isL o.be used 6.

If a source in excess of one millicurie t

outside. of the Calibration Room, the source operator shall record the contact readings of the source! storage container prior. to removal of the source from. the container.

When the source is returned to storage the survey will be. performed again and. compared to the-initial survey to ensure proper storage of the source.

Also if the source is to be used'in open air and in an-area not regularly established as a radiation area, then a rope barrier,shall be established where radiation levels of 2 mrem /hr or less exist.

On the rope barrier, signs bearing the radiation caution symbol and words

" CAUTION - RADI ATION AREA '- DO NOT ENTER WITHOUT RADCON

' PERMISSION"'shall be hung.

If this source.is to be used in an established radiation area for more than thirty days then the entrance to the area shall be equipped with locks and a control device with'an audible alarm:

and light.

The entrance shall be posted with a sign reading WARNING - RADIATION AREA WHEN LIGHT IS ON. 'If a high radiation area will exist for either of the two situations above,~ then the area will be controlled and posted in accordance with. Title 10 CFR part 20.203.

I.

Routine Personnel Monitoring Program All personnel working with radioactive sources shall wear a A direct reading dosimeter, gamma-TLD and neutron TLD badge I(if required).

Direct reading dosimeters shall be-read and recorded daily and have a range of zero to 200

.is 0

If a direct reading dosimeter

,,(,, milliroentgen or greater.

,jf found to be of f-scale, then' the TLD badge 'shall be processed

.Q immediately.

Gamma TLD badges are proceesed at least

/ \\sf\\k nonthly.

Neutron TLD badges are removed from service and

/\\

sent for processing app roximately every six weeks.

/

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3.

Dnergency Procedures 1.

The following conditions would.be indicative of a radiological emergency:

a.

The loss of accountability of radioactive material L

b.

Leaking sealed sources c.

Over exposure to personnel d.

Any reportable event as detailed in 10 CPR par t 20.

.c ITEM'910: -

~ ATTACHMENT 7 2.

In the' occurrence of any Lof - the ~ above emergency

. conditions,u the following immediate actions shall' be taken to minimize. area' contamination and radiation

~

exposure to persons in the' vicinity:ofnthe emergency area:-

a.

The emergency area shall be isolated.

b.

All unnecessary personnel.will'be evacuated immediately to a. contamination control check point.

Personnel shall be' surveyed.for radioact'ive contamination and decontaminated if necessary.:

c.

The accident or emergency shall be reported

'immediately to the Radiation Safety Of ficer or one of his designated representatives and request help if needed.

d.

All unfiltered ventilation shall be secured to contain airborne contamination. -

e.

Radiation, contamination and airborne radioactivity.

surveys shall be taken of the emergency' area and all' adjacent areas to determine the extent of' the problem.

f.

Evaluate all personnel dosimetry. to determined -

exposure received for the emergency.

.g.

Calculate or estimate exposures for unmonitored personnel (if any).

h.

Insute proper medical attention is given to all personnel involved with the emergency.

i.

The affected areas shall be decontaminated (if necessary) and~ returned to normal. working conditions as soon as possible.

3.

The remedial actions to be taken concerning the emergency shall include an investigation into the cause of the accident and any preventative. measures toLaid in preventing a recut t ence of a similar situation.

4.

A list of personnel to contact in-case of an emergency b

involving radioactive matetial held under this-license

-shall be posted.

These personnel shall direct remedial E

actions for the.emetgency.

1.

C. T.

Hill Work:

380-2369 Home:

826-9589-2.

G.

E.

Squites Work:

380-2239 Home:

826-1650 i

ITEM fl0! ATTACHMENT 7 3 '.,

F. - J.. De l ama in --

War k:

380-3243 tbme:

898-3730 4.

J. W.

Sta' ton Work:

380-3236 Home: '

868-9909 5.

B. W.

Milliken Work:

688-8042 Home:

1-498-3741 K.

Leak. Test of Sealed Sources 1..

All sealed sources with, a-half-life greater than thirty

.i days and containing 100 microcuries.or more of beta:and/or l

~

gamma ' emitting material or 10.microcuries or: more of alpha 1

' emitting material shall be leak. tested upon receipt or-transfer 1and every'six months'or less thereafter.

Sources in' storage shall be leak tested prior to transfer or use unless they have been leak tested within six months prior to the date of transfer or use.

Leak' testing shall be performed by a qualified source operator.

2.

Procedure for Leak Testing :

a.

A Whatman filter paper Numbet 1, 4.25 cm. in diameter, or equivalent, shall be used.

b.

The paper shall be saturated with isopropanol and rubbed firmly over the entire surf ace Lof the source or-the surfaces of the devices in:which the sealed source is permanently mounted-or stored.

c.

Leak test samples shall be. counted with appropriate detectors and swipe counters for the type.of radiation emitted.

Counting systems shall have a minimum sensitivity of 0.005 microcuries or less.

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d.-

Records of leak tests results shall be kept in units j

I of microcuries and kept on file until one year after transfet or disposal of the source, e.

If the leak test reveals the presence of 0.005 mictocut ies or greater of removable contamination, the i source shall be removed from service immediately.

The I Radiation Safety Of ficer shall be notified immediately )

of the situation and he shall submit required reports l

with the Nuclear Regulatoty Commission within five days of the test.

b

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ITEM #10 ATTACHMENT 7 CALIBRATION CERTIFICATION SHEET Calibration Date:

Cu0tomer and

, Address Customer

Contact:

In strument Type:

Model:

Calibrated by:

Serial Number:

Supervisor Signatute:

Manufacturer:

Calibrated for:

Routine:

Shield Survey:_ Post Shield Jurvey:

Special:

SOURCE DATA DATE:

Isotope Serial No.

Exposure Rate @ l Meter _

Accuracy S Isotope Serial No.

Exposure Rate @ l Meter _ _

Accuracy i Scale Dist. in Cm C a l c '. Rdgs.

Actual Rd g s.

Comments l

~

Scale Dist. in Cm Calc. Rd a s.

Actual Rdgs.

Comments

~ $ Cm Calc. Rd g s.

Actual Rdgs.

Co~tments Scale Dist.

i Scale Dist. in Cm Calc. Rdgs.

Actual Rdgs.

~

Comments m tg

_ _ _ _ - _ _ - _ _ _ _ _ _ _ _ _ - _ _ _ _ ~

O ITEM - 410 -

, ATTACHMENT 7

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.. Record ;.Managemen t

' Alll record ' keeping-and reviewing concerning the'-

-calibration facility and the material held under.this

license, except personnel' exposure records, are maintained at. the? NNS ' Radiological. Control Calibration -

j Facility.

A11' calibration facility survey records shall be maintained. indefinitely and ' instrument :

. calibration records shall be maintained 1for at-least

.three years.

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' l ITEM i11 ' ATTACHMENT 8

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. Waste Management Under this -license, Newport News-Shipbuilding only possesses '

i lc a solid: sealed:Pu8Be source.

Therefore,-there.will be no

- radioactive ef fluents or, waste genet'ated with the.use of the

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. sp'ecial nucle'ar material, j

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ML20247A102

Text

Contact:

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