Information Notice 1996-66, Recent Misadministrations Caused by Incorrect Calibrations of Strontium-90 Eye Applicators

Recent Misadministrations Caused by Incorrect Calibrations of Strontium-90 Eye Applicators

ML031050494
Person / Time
Site:	Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Nine Mile Point, Palisades, Palo Verde, Perry, Indian Point, Fermi, Kewaunee, Catawba, Harris, Wolf Creek, Saint Lucie, Point Beach, Oyster Creek, Watts Bar, Hope Creek, Grand Gulf, Cooper, Sequoyah, Byron, Pilgrim, Arkansas Nuclear, Three Mile Island, Braidwood, Susquehanna, Summer, Prairie Island, Columbia, Seabrook, Brunswick, Surry, Limerick, North Anna, Turkey Point, River Bend, Vermont Yankee, Crystal River, Haddam Neck, Ginna, Diablo Canyon, Callaway, Vogtle, Waterford, Duane Arnold, Farley, Robinson, Clinton, South Texas, San Onofre, Cook, Comanche Peak, Yankee Rowe, Maine Yankee, Quad Cities, Humboldt Bay, La Crosse, Big Rock Point, Rancho Seco, Zion, Midland, Bellefonte, Fort Calhoun, FitzPatrick, McGuire, LaSalle, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant
Issue date:	12/13/1996
From:	Cool D NRC/NMSS/IMNS
To:
References
IN-96-066, NUDOCS 9612090360
Download: ML031050494 (15)

UNITED STATES

NUCLEAR REGULATORY COMMISSION

OFFICE OF NUCLEAR MATERIAL SAFETY AND SAFEGUARDS

WASHINGTON, D.C. 20555 December 13, 1996 NRC INFORMATION NOTICE 96-66: RECENT MISADMINISTRATIONS CAUSED BY

INCORRECT CALIBRATIONS OF STRONTIUM-90

EYE APPLICATORS

Addressees

to use

All U.S. Nuclear Regulatory Commission Medical Use Licensees authorized

strontium-90 (Sr-90) eye applicators.

Purpose

The U.S. Nuclear Regulatory Commission (NRC) is issuing this information

notice to alert addressees to recent misadministrations caused by incorrect that

source strength determinations of Sr-90 eye applicators. It is expected

facilities

recipients will review the information for applicability to their

and consider actions, as appropriate, to avoid similar problems. However, suggestions contained in this information notice are not NRC requirements;

therefore, no specific action nor written response is required.

DescriDtion of Circumstances

The primary causes of two recent events have been problems with calibration the

and calculation of the dose rates from Sr-90 applicators. As a result, administered doses were not within 20 percent of the prescribed dose.

to use

Case 1. In October 1995, during an inspection of a licensee authorized the

a Sr-90 eye applicator in Mayag~ez, Puerto Rico, it was determined that A

calibration record for the licensee's Sr-90 eye applicator was missing.

and

previous owner of the source lost the original calibration certificate, This

his medical physics consultant performed a check of the source strength. resulted

check was performed with an inappropriate measurement instrument and 0

in an incorrect determination of the source strength as 0.24 Gray (Gy)/sec the

(24 rad/sec). The licensee obtained the source in 1994 and relied on source

erroneous source strength determination during treatments. Also, the

had not been decay-corrected by either owner since 1990. NRC urged the Fc2 licensee to have the eye applicator recalibrated and to be instructed in the

D

proper method to calculate the decay of the source.

National

The licensee subsequently had the eye applicator recalibrated by the a

Institute of Standards and Technology. The resultant recalibration revealed used

dose rate of 0.53 Gray (53 rad)/sec rather than the 0.24 Gy (24 rad)/sec to

10

by the licensee. The licensee had prescribed a total dose of between

25 Gy (1000 to 2500 rad) for approximately

9-0709036 f arr&0 C. Ilt, 2a

Dr

IN 96-66 December 13, 1996 70 patients, but actually administered about twice this amount. An NRC

medical consultant has reviewed the cases and has recommended that the

patients be evaluated for any adverse effects.

Case 2. In November 1995, while reviewing treatment records during a routine

NRC inspection of a licensee authorized to use a Sr-90 eye applicator in

Honolulu, Hawaii, an NRC inspector determined that the licensee had

incorrectly calculated the decay of the strength of a Sr-90 eye applicator and

subsequently delivered doses 20 percent over the prescribed doses to 16 patients. The root cause of this event was the licensee improperly

calculating the decay of the Sr-90 source. Specifically, the licensee

linearly decayed the strength of the source instead of logarithmically

decaying the source strength of the eye applicator. Before May 1995, a

technologist had correctly calculated the decay of the source; however, when

this technologist left, the physician incorrectly calculated the source decay

based on a linear decay from the previous calculations. In addition, the

incorrect half-life of Sr-90 was used in the calculation.

Following a correct determination of the source strength, the licensee

determined that 17 misadministrations involving 16 patients occurred, from

May 6, 1995 to November 16, 1995, including one patient who was treated on

both eyes. The delivered doses range from 21.1 to 22.7 percent greater than

the prescribed dose of 40 Gy (4000 rad).

Discussion

10 CFR 35.32, *Quality Management Program," requires licensees to develop

written procedures to meet five objectives associated with any brachytherapy

dose, including assurance that the prescribed dose is the administered dose.

A necessary part of this is to ensure that the dose rate emitted from an

applicator is correct. If the manufacturer's certificate of calibration or

original activity/dose rate name plate is missing, the licensee should arrange

with a qualified expert to determine the dose rate from the Sr-90 source.

(For additional details, see NRC IN 94-17, NSr-90 Eye Applicators: Submission

of Quality Management Plan, Calibration and Use," dated March 11, 1994.)

Failure to implement the Quality Management Rule and make required reports may

subject a licensee to orders, civil penalties, and notices of violation.

In view of the nature of the cited events, it appears worthwhile to review

some of the properties of Sr-90 eye applicators and the related processes for

decay correction over time. New Sr-90 eye applicators typically contain a

2 gigabecquerel (GBq) [54 millicurie(mCi)] source, exhibiting a surface dose

rate of about 0.50 Gy (50 rad)/sec. The half-life of the parent Sr-90 is

28.5 yrs [maximum beta energy equal to 0.54 mega-electron volts (MeY)], and

the yttrium-90 (Y-90) daughter half-life is 64.2 hrs (beta-max, 2.27 MeV);

therefore, both isotopes are in equilibrium on the eye applicator. Since

Sr-90 and Y-90 are in equilibrium, emissions from both isotopes must be

accounted for in dosimetry calculations.

IN 96-66 December 13, 1996 rate

The dose rate (D,) at a time (t) can be calculated from the initial dose

(De) at the time of the most recent calibration with the following formula:

D = D - (e-^t) (FI)

-Xt

where e, the base of the natural logarithm (2.718), is raised to the powerT. is

and is referred to as the 'decay factor' (df), where -X - -0.693/Tx, the half-life of the isotope, and t is the elapsed time. For Sr-90, TX-28.5 can

years; therefore, X - (0.693)/(28.5 yrs) = 0.0243 yr'. The values for df

after t

be used to determine the fraction of original activity remaining

years. These values can then be used to calculate dose rates by using the

following formula:

D,= Dao df (F2)

The fraction of activity remaining after a given number of years from the

original measurement date is given in Table 1 (Attachment 1).

For example

An eye applicator calibrated by the manufacturer on January 1, 1978, If, delivered

on contact. on

an initial dose rate ( Do) of 0.75 Gy/sec (75 rad/sec)

(in

January 1, 1996, the eye applicator needs to be used, the elapsed time

years) since calibration is 18, and from Table 1, df = 0.646 for Sr-90.

Using formula F2:

D,= bo. df

D18yaM - (0.75 Gy/sec)(0.646)

bigyea - 0.485 Gy/sec

(48.5 rad/sec)

IN 96-66 December 13, 1996 Table I may be extended using formula F1 and the value X - 0.0243 yr' for

Sr-90. Other values of df that need to be evaluated by licensees will need to

be re-calculated by using the appropriate half-life for that isotope.

Alternatively, a semi-logarithmic plot of the above data will yield a straight

line, which may be extended beyond 25 years.

This information notice requires no specific action nor written response. If

you have any questions about the information in this notice, please contact

one of the technical contacts listed below or the appropriate regional office.

Donald A. Cool, D rector

Division of Industrial and

Medical Nuclear Safety

Office of Nuclear Material Safety

and Safeguards

Technical contacts: Jose M. Diaz-Velez, RII

(404) 331-7438 E-mail: jxd2@nrc.gov

Emilio M. Garcia, RIV

(510) 975-0239 E-mail: emg@nrc.gov

James A. Smith, NMSS

(301) 415-7904 E-mail: jas4@nrc.gov

Attachments:

1. List of Recently Issued NMSS Information Notices

2. List of Recently Issued NRC Information Notices

42 T7SSI (/4e

Attachment I

IN 96-66 December 13, 1996 Page 1 of I

TABLE 1 FRACTION (EXPRESSED AS DECIMAL) OF ORIGINAL

SR-90 ACTIVITY REMAINING AFTER (t) YEARS

df Years (t) df Years (t) df Years (t) df

Years (t)

0.994 6.5 0.854 12.75 0.734 19 0.63

.25

6.75 0.849 13 0.729 19.25 0.626

.5 0.988

0.982 7 0.844 13.25 0.725 19.5 0.623

.75

0.976 7.25 0.838 13.5 0.72 19.75 0.619

1

0.97 7.5 0.833 13.75 0.716 20 0.615

1.25

0.964 7.75 0.828 14 0.712 20.25 0.611

1.5

0.958 8 0.823 14.25 0.707 20.5 0.608

1.75

0.953 8.25 0.818 14.5 0.703 20.75 0.604

2

0.947 8.5 0.813 14.75 0.699 21 0.6

2.25

0.941 8.75 0.808 15 0.695 21.25 0.597

2.5

0.935 9 0.804 15.25 0.69 21.5 0.593

2.75

0.93 9.25 0.799 15.5 0.686 21.75 0.589

3

0.924 9.5 0.794 15.75 0.682 22 0.586

3.25

9.75 0.789 16 0.678 22.25 0.582

3.5 0.918

10 0.784 16.25 0.674 22.5 0.579

3.75 0.913

10.25 0.78 16.5 0.67 22.75 0.575

4 0.907

0.902 10.5 0.775 16.75 0.666 23 0.572

4.25

0.896 10.75 0.77 17 0.662 23.25 0.568

4.5

11 0.765 17.25 0.658 23.5 0.565

4.75 0.891

11.25 0.761 17.5 0.654 23.75 0.562

5 0.886

11.5 0.756 17.75 0.65 24 0.558

5.25 0.88

0.875 11.75 0.752 18 0.646 24.25 0.555

5.5

0.87 12 0.747 18.25 0.642 24.5 0.551

5.75

0.864 12.25 0.743 18.5 0.638 24.75 0.548

6

0.859 12.5 0.738 18.75 0.634 25 0.545

6.25

Attachment 2 IN 96-66 December 13, 1996 Page 1 of I

UST OF RECENTLY ISSUED

NMSS INFORMATION NOTICES

Information Date of

Notice No. Subject Issuance Issued to

96-63 Potential Safety Issue 12/05196 All U.S. Nuclear Regulatory

Regarding the Shipment Commission licensees

of Fissile Material authorized to possess special

nuclear material in unsealed

quantities greater than a

critical mass

96-57 Incident-Reporting Require- 10/30196 All U.S. Nuclear Regulatory

ments Involving Intakes, Commission licensees

During a 24-Hour Period

that May Cause a Total

Effective Dose Equivalent

in Excess of 0.05 Sv (5 rem)

96-54 Vulnerability of Stainless 10/17/96 All material licensees

Steel to Corrosion When

Sensitized

96-53 Retrofit to Amersham 660 10115/96 All industrial radiography

Posilock Radiography licensees

Camera to Correct Incon- sistency in 10 CFR Part 34 Compatibility

96-52 Cracked Insertion Rods 09/26/96 All U.S. Nuclear Regulatory

on Troxler Model 3400 Commission portable gauge

Series Portable Moisture licensees and vendors

Density Gauges

96-51 Residual Contamination 09/11196 All material licensees

Remaining in Krypton-85 Handling System After

Venting

' >

Attachment 3 IN 96-66 December 13, 1996 Page 1 of I

UST OF RECENTLY ISSUED

NRC INFORMATION NOTICES

Information Date of

Notice No. Subject Issuance Issued to

96-65 Undetected Accumulation 1211 1/96 All holders of OLs

of Gas in Reactor Coolant or CPs for nuclear

System and Inaccurate power reactors

Reactor Water Level

Indication During Shutdown

96-64 Modifications to Con- 12/10196 All holders of OLs

tainment Blowout Panels or CPs for nuclear

Without Appropriate reactors

Design Controls

96-63 Potential Safety Issue 12/05196 All U.S. Nuclear

Regarding the Shipment Regulatory Commission

of Fissile Material licensees authorized

to possess special

nuclear material in

unsealed quantities

greater than a critical

mass

96-62 Potential Failure of the 11120196 All holders of OLs

Instantaneous Trip Function and CPs for nuclear

of General Electric RMS-9 power plants

Programmers

96-61 Failure of a Main Steam Safety 11/20/96 All holders of OLs or

Valve to Reseat Caused by an CPs for nuclear power

Improperly Installed Release . reactors

Nut

96-60 Potential Common-Mode Post- 11/14/96 All holders of OLs or

Accident Failure of Residual CPs for nuclear power

Heat Removal Heat Exchangers reactors

OL = Operating License

CP = Construction Permit

IN 96-66

. December 13, 1996 Table 1 may be extended using formula FH and the value x - 0.0243 yr1 for

Sr-90. Other values of df that need to be evaluated by licensees will need to

be re-calculated by using the appropriate half-life for that isotope.

Alternatively, a semi-logarithmic plot of the above data will yield a straight

line, which may be extended beyond 25 years.

This information notice requires no specific action nor written response. If

you have any questions about the information in this notice, please contact

one of the technical contacts listed below or the appropriate regional office.

Donald A. Cool, Director

Division of Industrial and

Medical Nuclear Safety

Office of Nuclear Material Safety

and Safeguards

Technical contacts: Jose M. Diaz-Velez, RII

(404) 331-7438 E-mail: jxd2@nrc.gov

Emilio M. Garcia, RIV

(510) 975-0239 E-mail: emg@nrc.gov

James A. Smith, NMSS

(301) 415-7904 E-mail: jas4enrc.gov

Attachments:

1. List of Recently Issued NMSS Information Notices

2. List of Recently Issued NRC Information Notices

Official Record Copy S:\Jsmith\imns5350.JAS

OFC IMAB I E IMAB lIMAB I IMOB I Tech Ed I

KANE JASmith SLMerchant LWCamper o JMPiccone o EKraus o

DATE 1 11/26/96 11/26/96 110/28/96 10/29/96 8/01/96 OFC J IJE OGC I DD/IMNS I D/IMNS I

NAME JLiebermano SATreby o FCCombso DACool

DATE 08/07/96 11/07/96 11/12/96 I 11/29/96

- COWVER E = COVER & Attachment N - NO COPY o- See Previous Concurrence

eIN 96-##

'J November .1996 Table 1 may be extended using formula F1 and the value A = 0.0243 yr" for

Sr-90. Other values of df that need to be evaluated by licensees will need to

be re-calculated by using the appropriate half-life for that isotope.

Alternatively, a semi-logarithmic plot of the above data will yield a straight

line, which may extended beyond 25 years.

This information notice requires no specific action nor written response. If

you have any questions about the information in this notice, please contact

one of the technical contacts listed below or the appropriate regional office.

Donald A. Cool, Director

Division of Industrial and

Medical Nuclear Safety

Office of Nuclear Material Safety

and Safeguards

Contacts: Jose M. Diaz-Velez, RII

(404) 331-7438 Internet: JXD2@NRC.GOV

Emilio M. Garcia, RIV

(510) 975-0239 Internet: EMG@NRC.GOV

James A. Smith, NMSS

(301) 415-7904 Internet:JAS4@NRC.GOV

Attachments:

1. Table of decay factors

2. List of Recently Issue(d NMSS Information Notices

3. List of Recently Issue(d NRC Information Notices

fffirial Rernrd COnY Svisrnith\imns5350JAS

OFC IMAB lE IMAB lIMAB lIMOB j Tech Ed

NAME JASmi SLM@f@I~nt LWCamper o JMPiccone o EKraus @

DATE it /96 i 10/8/

9 6 10/29/96 8/01/96 OFC OE I OGC DD/IMNS DlIMNS

NAME JLieberman@ SATreby @ FCCombs@ _____ __ _ _l

DATE 08/07/96 11/07/96 11/12/96 ///t11/96

= COVER E = COVER & Attachment N = NO COPY ?--See Previous Concurrence

N 96-Il

-November 91996 This information notice requires no specific action nor written respons . If

you have any questions about the information in this notice, please c tact

one of the technical contacts listed below or the appropriate reglo 1 office.

Donald A. Cool, Director, Division of Industrial and

Medical Nuclear Sa ty

Office of Nuclear terial Safety

and Safeguards

Contacts: Jose M. Diaz-Velez, RI

(404) 331-7438 Internet: JXD2@NRC.GOV

Emilio M. Garcia, RIV

(510) 975-0239 Internet: EMG@NRC.GOV

James A. Smith, NMSS

(301) 415-7904 Internet:JAS4@NRC.GOV

Attachments:

1. Table of decay factors

2. List of Recently Issued NMS Information Notices

3. List of Recently Issued MR Information Notices

Official Record Copy 5: \smitinins5350.JAS

OFC IMAB I E IMAB//1S IMAB I IMOB I Tech E

NAME JASmithm SL erc nt LWCamper o JMPiccone a EKraus o

DATE t//14/96 A/96 10/28/96 10/29/96 8/01/96 OFC OE l OGC DD/IMNS D/IMNS

NAME JLiebermanq/ SATreby o FCCombso DACool

DATE 08/07/9 11/07/96 11/12/96 / /96 C = COVER E M OVER h Attachment N a NO COPY o- See Previous Concurrence

N 96-##

.

a *-i ovember .1996 D

18year (0.75 Gy/sec)(0.646)

"

blyrs, 0G0.485 Gy/sec

Table 1 may be extended using formula F1 and the value A 0.0243 yr-.

Alternatively, a semi-logarithmic plot of the above dat will yield a straight

line, which may extended beyond 20 years.

This information notice requires no specific actio nor written response. If

you have any questions about the information in t s notice, please contact

one of the technical contacts listed below or t appropriate regional office.

Donald . Cool. Director

Divis on of Industrial and

M ical Nuclear Safety

Ofice of Nuclear Material Safety

and Safeguards

Contacts: Jose M. Diaz-Velez,

(404) 331-7438 Internet:JMD2@NRC. V

Emilio M. Garci , RIV

(510) 975-0239/

Internet:EM C.GOV

James A. S ,thNMSS

(301) 415- 904 Internet- AS4@NRC.GOV

Attachments:

1. List of Recent y Issued NMSS Information Notices

2. List of Rece ly Issued NRC Information Notices

Official Recordo S:\jsmith\imns5350.JAS

OFC

NAME

DATE /

IMA

/1*196 E

I IMAB

le/6///96 ant

jI I

LWCamper o

10/28/96 II MOB

JMPiccone

10/29/96

@

Techi Ed

EKraus o

8/01/96 OFC/ OE I OGC DD/IMNS D/IMNS l

AM JLiebermano SATreby o FCCombso DACool

D0/07/96 11/07/96 11/12/96 / /96

,COVER E = COVER & Attachment N = NO COPY @- See Previous Concurrence

N 96-ft

<iovember ,1996 D (0.75 Gy/sec)(0.646)

.0.485 Gy/sec

1 Table 1 may be etended using formula F1 and the value X - 0.0243 yr .

Alternatively, a mi-logarithmic plot of the above data will yield a straight

line, which may ext nded beyond 20 years.

This information noti requires no specific action nor written response. If

you have any questions bout the information inthis notice, please contact

(one of) the technical c tact(s) listed below or the appropriate regional

office.

Donald A. Cool, Director

Division of Industrial and

Medical Nuclear Safety

Office of Nuclear Material Safety

and Safeguards

Contacts: Jose M. Diaz-Velez, RII

(404) 331-7438 Internet:JMD2@NRC.GOY

Emilio M. Garcia, RIV

(510) 975-0239 Internet:EMG@NRC.GOV

James A. Smith, NMSS

(301) 415-7904 Internet:JAS4@NRC.GOV

Attachments:

1. List of Recently Issued NMSS Information Notices

2. List of Recently Issued NRC Information Notices

Official Record Copy S:\Jsmith\imns5350.JAS \

OFC qIMABiLW B IM4AB - l

IMOB E\Tech Ed

NAME JASm1i SL chant LWCamper a JMPiccone c EKraus o

DATE I I 1/96 _ / j 10/28/96 10/29/96 8/01/96 OFC OE OGC DD/IMNS D/IMNS

NAME JLiebermano SATreby a F(Cm DACool

DATE 08/07/96 11/07/96 / /96 C a COVER E a CUVLK & Attacnment N = mU LUr1'u- aee rrevmuUs IA0ICUIIrCLM.

,N96-##

' "-'-6ctober ,1996 ble8.. - (0.75 Gy/sec)(0.646)

l 0.4 y/sec

Table 1 may be extended using fo ula F1 and the value X - 0.0243 yre.

Alternatively, a semi-logarithmic lot of the above data will yield a straight

line, which may extended beyond 20 ars.

This information notice requires no sp ific action nor written response. If

you have any questions about the infrma ion inthis notice, please contact

(one of) the technical contact(s) listed elow or the appropriate regional

office.

Donald A. -ool, Director

Division o Industrial and

Medical Ntclear Safety

Office of N clear Material Safety

and Safegu rds

Contacts: Jose M. Diaz-Velez, RII

(404) 331-7438 Internet:JMD2@NRC. GOY

Emilio M. Garcia, RIV

(510) 975-0239 Internet:EMG@NRC.GOV

James A. Smith, NMSS

(301) 415-7904 Internet:JAS4@NRC .GOV

Attachments:

1. List of Recently Issued NMSS Information Notices

2. List of Recently Issued NRC Information Notices

Official Record Copy S:\Jsmithi\mns5350.JAS \

OFCIMAB AB IMAB I l IMOB l \l,TechEdl

NAME JASai R SUM nt LWCamper a JMPiccone o EKraus o

DATE / -J/ 10/28/96 10/29/96 8/01/96 OFC OE DD/IMNS D/IMNS

KANE JLiebermano Sireb NIL FCCombs DACool

DATE 08/07/96 l/ /1/96 / /96 / /96 aCOVER E a COVER & Attachment K = ND COPY o- See Previous Concurrence \

C,6 I < ~N96-#t

4 October ,1996 We have Dlew. - (0.75 Gy/sec)(0.646)

Table I may be extended using formula FH and the value X - 0.0243 yr1 .

Alternatively, a semi-icgarithmic plot of the above data will yield a straight

line, which may extended be~yond 20 years.

This information notice requires no specific action nor written response. If

you have any questions about the information in this notice, please contact

(one of) the technical contact(s) listed below or the appropriate regional

office.

Donald A. Cool, Director

Division of Industrial and

Medical Nuclear Safety

Office cf Nuclear Material Safety

and Safrguards

Contacts: Jose M. Diaz-Velez, RII

(404) 331-7438 Internet:JMD2@NRC.60V

Emilio M. Garcia, RIV

(510) 975-0239 Internet:EMG@NRC.GOY

James A. Smith, NMSS

(301) 415-7904 Internet:JAS4@NRC.GOV

Attachments:

1. List of Recently Issued NMSS Information Notices

2. List of Recently Issued NRC Information Notices

Official Record CODY SA:smithkimtns535GJAS

OFC IMAB E IMAB Tech

NAME JASmi S rchant C rer on EKraus o

DATE It/1 /96 /96 96 /09 /96 8/01/96 OFC OE lOGC lDD/IMNS l D/IMNS l~

KANE JLiebermano SATreby FCCombs DACool

DATE 08/07/96 / /96 I /96 / /96

• COVER E a COVER & Attachment N = NO COPY e- See Previous Concurrence

A '

IN 96-##

August ,1996 This informat n not1ce requires no specific action nor written response. If

you have any qu tions about the information in this notice, please contact

(one of) the techn cal contact(s) listed below or the appropriate regional

office.

Donald A. Cool, Director

Division of Industrial and

Medical Nuclear Safety

Office of Nuclear Material Safety

and Safeguards

Contacts: Jose M. Diaz-Velez, RII

(404) 331-7438 Emilio M. Garcia, RIV

(510) 975-0239 James A. Smith, NMSS

(301) 415-7904 Attachments:

1. List of Recently Issued NMSS Information Notices

2. List of Recently Issued NRC Information Notices

Official Record Copy G:\imns5350.JAS , )

OFC IMABl E IlTech

OGC Ed

NAME JASmi'W per SATreby EKraus a

DATE *in /96 __ /________ \___96 / /96 8/01/96 OFC \ IlI DD/IMNS l D/IMNS l

NAME Q jeerman FCCombs DACool

DATE ___9_

w COVER

/ /96

'E i. COVER & Attachment N = NO COPY o- See Previous Concurrence