Information Notice 1986-41, Evaluation of Questionable Exposure Readings of Licensee Personnel Dosimeters

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)

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