Information Notice 1986-41, Evaluation of Questionable Exposure Readings of Licensee Personnel Dosimeters: Difference between revisions

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{{#Wiki_filter:SSINS No.: 6835 IN 86-41 UNITED STATES
{{#Wiki_filter:SSINS No.: 6835 IN 86-41


===UNITED STATES===
NUCLEAR REGULATORY COMMISSION
NUCLEAR REGULATORY COMMISSION


OFFICE OF INSPECTION AND ENFORCEMENT
===OFFICE OF INSPECTION AND ENFORCEMENT===
WASHINGTON, D.C.


WASHINGTON, D.C. 20555 June 9, 1986 IE INFORMATION NOTICE NO. 86-41:  EVALUATION OF QUESTIONABLE EXPOSURE READINGS
20555


OF LICENSEE PERSONNEL DOSIMETERS
===June 9, 1986===
IE INFORMATION NOTICE NO. 86-41: EVALUATION OF QUESTIONABLE EXPOSURE READINGS
 
===OF LICENSEE PERSONNEL DOSIMETERS===


==Addressees==
==Addressees==
Line 40: Line 45:
It is expected that recipients will review this notice for applicability to their
It is expected that recipients will review this notice for applicability to their


facilities. However, suggestions contained in this information notice do not
facilities.
 
However, suggestions contained in this information notice do not


constitute NRC requirements; therefore, no specific action or written response
constitute NRC requirements; therefore, no specific action or written response
Line 52: Line 59:
have received TLD or film badge reports showing a questionable high-exposure
have received TLD or film badge reports showing a questionable high-exposure


reading. Licensees' evaluations found such readings to be erroneous since the
reading.
 
Licensees' evaluations found such readings to be erroneous since the


exposure purportedly was recorded on the dosimeter while it was not being worn
exposure purportedly was recorded on the dosimeter while it was not being worn


by the individual. The majority of these cases have involved dosimeters that
by the individual.
 
The majority of these cases have involved dosimeters that


were inadvertently left in high-radiation areas or left for long periods of time
were inadvertently left in high-radiation areas or left for long periods of time


near byproduct material storage containers. Notwithstanding the requirements
near byproduct material storage containers.


===Notwithstanding the requirements===
for proper use of personnel dosimeters, many licensees do not know how these
for proper use of personnel dosimeters, many licensees do not know how these


Line 69: Line 81:
Surveys are necessary to evaluate questionable exposure readings on licensee
Surveys are necessary to evaluate questionable exposure readings on licensee


personnel dosimeters. Improper evaluation of such readings may lead to a
personnel dosimeters.


===Improper evaluation of such readings may lead to a===
citation for violation of an NRC requirement and possible enforcement action.
citation for violation of an NRC requirement and possible enforcement action.


Line 79: Line 92:
exposure to individuals so that no individual receives an exposure in excess
exposure to individuals so that no individual receives an exposure in excess


of the radiation dose standards. 10 CFR 20.201 requires that licensees make or
of the radiation dose standards.
 
10 CFR 20.201 requires that licensees make or


cause to be made such surveys as may be necessary for the licensee to comply
cause to be made such surveys as may be necessary for the licensee to comply
Line 87: Line 102:
are reasonable under the circumstances to evaluate the extent of. radiatzorf
are reasonable under the circumstances to evaluate the extent of. radiatzorf


hazards that may be present. Al psedei ,tnXA   rMZ lations, "survet" means sm
hazards that may be present.
 
Al psedei ,tnXA
 
rMZ
 
lations, "survet " means sm


860604000ft
860604000ft


IN 86-41 June 9, 1986 evaluation of the radiation hazards incident to the production, use, release, disposal, or presence of radiation under a specific set of conditions. In some
IN 86-41 June 9, 1986 evaluation of the radiation hazards incident to the production, use, release, disposal, or presence of radiation under a specific set of conditions.


cases, the evaluation may be supported by a physical survey. 10 CFR 20.401 requires each licensee to maintain records showing the results of surveys
In some
 
cases, the evaluation may be supported by a physical survey.
 
10 CFR 20.401 requires each licensee to maintain records showing the results of surveys


required by 10 CFR 20.201.
required by 10 CFR 20.201.
Line 102: Line 127:


as follows:
as follows:
o     Signed and dated statements from individuals present at the time of the
o
 
Signed and dated statements from individuals present at the time of the


possible false exposure, including helpers or witnesses. Such statements
possible false exposure, including helpers or witnesses.


===Such statements===
have been written by the individuals independently and have included
have been written by the individuals independently and have included


all pertinent information known by them.
all pertinent information known by them.


o     Documentation of the Radiation Safety Officer's evaluation and conclusions, including results of interviews of personnel involved, records of telephone
o
 
Documentation of the Radiation Safety Officer's evaluation and conclusions, including results of interviews of personnel involved, records of telephone


conversations, examination of equipment (when applicable), surveys, and
conversations, examination of equipment (when applicable), surveys, and
Line 116: Line 146:
corrective action to prevent recurrence.
corrective action to prevent recurrence.


o     Estimation of the actual exposure by measurement, calculation, or other
o
 
Estimation of the actual exposure by measurement, calculation, or other


appropriate methods.
appropriate methods.
Line 122: Line 154:
In addition to the above, reviews of existing documentation have been made to
In addition to the above, reviews of existing documentation have been made to


ensure that records are complete and up to date. Such documents include utili- zation logs, dosimeter logs, exposure files, equipment maintenance checks, cali- brations, and training.
ensure that records are complete and up to date.
 
Such documents include utili- zation logs, dosimeter logs, exposure files, equipment maintenance checks, cali- brations, and training.


If a Radiation Safety Officer's evaluation of a high TLD or film badge reading
If a Radiation Safety Officer's evaluation of a high TLD or film badge reading
Line 130: Line 164:
to the NRC in accordance with 10 CFR 20.403 or 20.405.
to the NRC in accordance with 10 CFR 20.403 or 20.405.


No written response to this information notice is required. If you have any
No written response to this information notice is required.


===If you have any===
questions regarding this matter, please contact the Regional Administrator
questions regarding this matter, please contact the Regional Administrator


Line 138: Line 173:
James;G. Partlow, Director
James;G. Partlow, Director


Divishon of Inspection Programs
===Divishon of Inspection Programs===
 
Office of Inspection and Enforcement
Office of Inspection and Enforcement


Line 145: Line 179:


===H. Karagiannis, IE===
===H. Karagiannis, IE===
                      (301) 492-9655 Attachment:   List of Recently Issued IE Information Notices
(301) 492-9655 Attachment:  
 
===List of Recently Issued IE Information Notices===


Attachment 1 IN 86-41 June 9, 1986 LIST OF RECENTLY ISSUED
===Attachment 1===
IN 86-41


IE INFORMATION NOTICES
===June 9, 1986===
LIST OF RECENTLY ISSUED


Information                                   Date of
===IE INFORMATION NOTICES===
Information


Notice No.    Subject                        Issue    Issued to
Date of


86-32          Request For Collection Of      6/6/86  All power reactor
Notice No.


Sup. 1        Licensee Radioactivity                  facilities holding
Subject


Measurements Attributed To              an OL or CP
Issue


Issued to
86-32 Sup. 1
86-40
86-39
86-38
86-37
===Request For Collection Of===
Licensee Radioactivity
===Measurements Attributed To===
The Chernobyl Nuclear Plant
The Chernobyl Nuclear Plant


Accident
Accident


86-40          Degraded Ability To Isolate   6/5/86  All power reactor
===Degraded Ability To Isolate===
The Reactor Coolant System
 
From Low-Pressure Coolant
 
===Systems in BWRS===
Failures Of RHR Pump Motors
 
===And Pump Internals===
Deficient Operator Actions
 
===Following Dual Function Valve===
Failures


The Reactor Coolant System                facilities holding
===Degradation Of Station===
Batteries


From Low-Pressure Coolant              an OL or CP
===Change In NRC Practice===
Regarding Issuance Of


Systems in BWRS
===Confirming Letters To===
Principal Contractors


86-39          Failures Of RHR Pump Motors    5/20/86  All power reactor
===Fire In Compressible Material===
At Dresden Unit 3


And Pump Internals                      facilities holding
===Improper Assembly, Material===
Selection, And Test Of Valves


an OL or CP
===And Their Actuators===
Information For Licensee


86-38          Deficient Operator Actions      5/20/86  All power reactor
===Regarding The Chernobyl===
Nuclear Plant Accident


Following Dual Function Valve            facilities holding
6/6/86
6/5/86
5/20/86
5/20/86
5/16/86
5/16/86
5/15/86
5/13/86
5/6/86


Failures                                an OL or CP
===All power reactor===
facilities holding


86-37          Degradation Of Station          5/16/86  All power reactor
an OL or CP


Batteries                                facilities holding
===All power reactor===
facilities holding


an OL or CP
an OL or CP


86-36          Change In NRC Practice          5/16/86  All power reactor
===All power reactor===
facilities holding
 
an OL or CP


Regarding Issuance Of                    facilities holding
===All power reactor===
facilities holding


Confirming Letters To                    an OL or CP
an OL or CP


Principal Contractors
===All power reactor===
facilities holding


86-35          Fire In Compressible Material 5/15/86    All power reactor
an OL or CP


At Dresden Unit 3                        facilities holding
===All power reactor===
facilities holding


an OL or CP
an OL or CP


86-34          Improper Assembly, Material    5/13/86  All power reactor
===All power reactor===
facilities holding


Selection, And Test Of Valves            facilities holding
an OL or CP


And Their Actuators                      an OL or CP
===All power reactor===
facilities holding


86-33          Information For Licensee        5/6/86  Fuel cycle licensees
an OL or CP


Regarding The Chernobyl                  and Priority 1 material
===Fuel cycle licensees===
and Priority 1 material


Nuclear Plant Accident                  licensees
licensees


OL = Operating License
86-36
86-35
86-34
86-33 OL = Operating License


CP = Construction Permit}}
CP = Construction Permit}}


{{Information notice-Nav}}
{{Information notice-Nav}}

Latest revision as of 10:08, 16 January 2025

Evaluation of Questionable Exposure Readings of Licensee Personnel Dosimeters
ML031250043
Person / Time
Site: Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Mcguire, 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, 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, 05000000, Zimmer, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant, Skagit, Marble Hill, Crane
Issue date: 06/09/1986
From: Partlow J
NRC/IE
To:
References
IN-86-041, NUDOCS 8606040004
Download: ML031250043 (3)
v • d • e


SSINS No.: 6835 IN 86-41

UNITED STATES

NUCLEAR REGULATORY COMMISSION

OFFICE OF INSPECTION AND ENFORCEMENT

WASHINGTON, D.C.

20555

June 9, 1986

IE INFORMATION NOTICE NO. 86-41: EVALUATION OF QUESTIONABLE EXPOSURE READINGS

OF LICENSEE PERSONNEL DOSIMETERS

Addressees

All byproduct material licensees.

Purpose

This notice is (1) to alert licensees of cases reported to the NRC where

questionable exposure readings have been recorded for personnel dosimetry devices

used by licensee personnel and (2) to provide recipients with information on

evaluation methodology used by some licensees to evaluate and report such readings.

It is expected that recipients will review this notice for applicability to their

facilities.

However, suggestions contained in this information notice do not

constitute NRC requirements; therefore, no specific action or written response

is required.

Description of Circumstances

The NRC has encountered a number of cases in which byproduct material licensees

have received TLD or film badge reports showing a questionable high-exposure

reading.

Licensees' evaluations found such readings to be erroneous since the

exposure purportedly was recorded on the dosimeter while it was not being worn

by the individual.

The majority of these cases have involved dosimeters that

were inadvertently left in high-radiation areas or left for long periods of time

near byproduct material storage containers.

Notwithstanding the requirements

for proper use of personnel dosimeters, many licensees do not know how these

cases should be evaluated and reported to NRC.

Discussion:

Surveys are necessary to evaluate questionable exposure readings on licensee

personnel dosimeters.

Improper evaluation of such readings may lead to a

citation for violation of an NRC requirement and possible enforcement action.

Byproduct material licensees should be aware of their responsibilities with

respect to 10 CFR Part 20.101, which requires that licensees control radiation

exposure to individuals so that no individual receives an exposure in excess

of the radiation dose standards.

10 CFR 20.201 requires that licensees make or

cause to be made such surveys as may be necessary for the licensee to comply

with the radiation dose standards specified in 10 CFR 20.101 and that the surveys

are reasonable under the circumstances to evaluate the extent of. radiatzorf

hazards that may be present.

Al psedei ,tnXA

rMZ

lations, "survet " means sm

860604000ft

IN 86-41 June 9, 1986 evaluation of the radiation hazards incident to the production, use, release, disposal, or presence of radiation under a specific set of conditions.

In some

cases, the evaluation may be supported by a physical survey.

10 CFR 20.401 requires each licensee to maintain records showing the results of surveys

required by 10 CFR 20.201.

The information that has been documented by some licensees that meets NRC's

requirements for a reasonable evaluation of questionable exposure readings is

as follows:

o

Signed and dated statements from individuals present at the time of the

possible false exposure, including helpers or witnesses.

Such statements

have been written by the individuals independently and have included

all pertinent information known by them.

o

Documentation of the Radiation Safety Officer's evaluation and conclusions, including results of interviews of personnel involved, records of telephone

conversations, examination of equipment (when applicable), surveys, and

corrective action to prevent recurrence.

o

Estimation of the actual exposure by measurement, calculation, or other

appropriate methods.

In addition to the above, reviews of existing documentation have been made to

ensure that records are complete and up to date.

Such documents include utili- zation logs, dosimeter logs, exposure files, equipment maintenance checks, cali- brations, and training.

If a Radiation Safety Officer's evaluation of a high TLD or film badge reading

cannot conclusively prove that the reading was erroneous, a report is made

to the NRC in accordance with 10 CFR 20.403 or 20.405.

No written response to this information notice is required.

If you have any

questions regarding this matter, please contact the Regional Administrator

of the appropriate NRC regional office or this office.

James;G. Partlow, Director

Divishon of Inspection Programs

Office of Inspection and Enforcement

Technical Contact:

H. Karagiannis, IE

(301) 492-9655 Attachment:

List of Recently Issued IE Information Notices

Attachment 1

IN 86-41

June 9, 1986

LIST OF RECENTLY ISSUED

IE INFORMATION NOTICES

Information

Date of

Notice No.

Subject

Issue

Issued to

86-32 Sup. 1

86-40

86-39

86-38

86-37

Request For Collection Of

Licensee Radioactivity

Measurements Attributed To

The Chernobyl Nuclear Plant

Accident

Degraded Ability To Isolate

The Reactor Coolant System

From Low-Pressure Coolant

Systems in BWRS

Failures Of RHR Pump Motors

And Pump Internals

Deficient Operator Actions

Following Dual Function Valve

Failures

Degradation Of Station

Batteries

Change In NRC Practice

Regarding Issuance Of

Confirming Letters To

Principal Contractors

Fire In Compressible Material

At Dresden Unit 3

Improper Assembly, Material

Selection, And Test Of Valves

And Their Actuators

Information For Licensee

Regarding The Chernobyl

Nuclear Plant Accident

6/6/86

6/5/86

5/20/86

5/20/86

5/16/86

5/16/86

5/15/86

5/13/86

5/6/86

All power reactor

facilities holding

an OL or CP

All power reactor

facilities holding

an OL or CP

All power reactor

facilities holding

an OL or CP

All power reactor

facilities holding

an OL or CP

All power reactor

facilities holding

an OL or CP

All power reactor

facilities holding

an OL or CP

All power reactor

facilities holding

an OL or CP

All power reactor

facilities holding

an OL or CP

Fuel cycle licensees

and Priority 1 material

licensees

86-36

86-35

86-34

86-33 OL = Operating License

CP = Construction Permit


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