ML17055D281

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Insp Repts 50-220/87-17 & 50-410/87-34 on 870824-27. Violation Noted.Major Areas Inspected:Organization & Staffing,Training,Audits,Alara,External Exposure Control & Internal Exposure Control & Contaminated Matls Control
ML17055D281
Person / Time
Site: Nine Mile Point  Constellation icon.png
Issue date: 10/08/1987
From: Markley M, Nimitz R, Shanbaky M
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
Shared Package
ML17055D278 List:
References
50-220-87-17, 50-410-87-34, NUDOCS 8710190202
Download: ML17055D281 (30)


See also: IR 05000220/1987017

Text

'

U.

S.

NUCLEAR REGULATORY COMMISSION

REGION I

Report

No. 50-220/87-17

50-410/87-34

Docket No.

50-220

50-410

License

No.

DPR-63

~NP -54

Priority

Category

C

Licensee:

Nia ara

Mohawk Power Cor oration

300 Erie

Bou evar

West

S racuse

New Yor

13202

Facility Name:

Nine Mile Point Units

1 and

2

Inspection At: Oswe o,

New York

Inspection

Conducted:

Au ust 24-27,

1987

Inspectors:

R. L. Nimitz, Senior

Ra

ation Specia ist

ate

N. Mar

ey,

Ra iation

Sp cia

st

a

e

Approved by:

H.

M.

an ay,

Facilities Radiation Protection Section

ate

Ins ection

Summar

Ins ection conducted

Au ust 24-27,

1987

Combined.

Re ort

o. 50-2

0 87-17;

50-410 87-34

Areas

Ins ected:'outine

unannounced

radiological controls inspection at

Units

1 an

nit 2.

Areas. reviewed were:

organization

and staffing;

training; audits;

ALARA; external

exposure control; internal

exposure control;

radwaste

and contaminated

material .control;

and start-up

surveys for Unit 2.

Results

One apparent violation was identified,(failure to adhere

to radiation

protection procedures,

section 9).

A need for improvement of housekeeping

in

Unit 2 was identified.

871019'0202

871015

PDR

ADOCK 05000220

8

PDR

Details

1.

Individuals Contacted

'Ill

N

h

k

  • T. J. Perkins,

Generation

Superintendent

  • T.

Roman, Station Superintendent,

Unit

1

  • R.

B. Abbott, Station Superintendent,

Unit 2

  • W. Hansen,

Manager - Corporate

gA

  • C.

Beckham,

Manager - gA Operation

  • K. Zolhtsch, Superintendent

Training

  • A. Pinter, Unit 2 Licensing Engineer
  • E.Leach,

Radiation Protection

Manager

  • D. Barcomb; Unit 2 Radiation Protection

Supervisoi

  • W. Schottens,

Assistant'upervisor,

Radiation Protection - Unit

1

  • T. Egan,

Nuclear Compliance

and Verification

  • R. Pasternak,

Manager,

Nuclear Consulting

NRC

  • C. Marschall, Resident

Inspector

Others

  • P.

D. Eddy, Public Service

Commission

  • P.

D. MacEwan,

New York State Electric and

Gas

  • Denotes

those individuals attending

the exit meeting.

The inspector also contacted

other individuals.

2.

Pur ose of Ins ection

The purpose of this routine,

unannounced

inspection

was to review the

following:

Unit

1 and

2

Licensee action

on previous findings

Organization

and Staffing

Training

Audits

ALARA

External

Exposure Controls

Internal

Exposure, Controls

Unit 2

Radiation

Survey Measurements

3.0

Licensee Actions

on Previous

Findin

3. 1

(Open) violation (50-220/86-16-01)

Licensee did not perform surveys in accordance

with 10 CFR 20.201.

This inspection

reviewed this matter with respect

to the. corrective

actions outlined in the licensee's

May 19,

1987 letter

(NMP1L-0154).

The licensee's

response

outlined

10 corrective actions that were

taken.

Two of the

10 items

have to be verified as

implemented.

These

are

as follows:

Modification of the General

Employee Training Program to

discuss

the radiological event prompting the violation and

lessons

learned.

Improvement of management

assessment

and involvement of the

site Radiation Protection

Program through formalized training

and on-the-job evaluation of work in progress.

Inspector time limitations and licensee

cognizant

personnel

accessibility

precluded

complete

review of the remaining

two

issues.

3.2

{Closed) violation (50-220/86-16-02)

Licensee

did not adhere to radiation protection procedures.

The

licensee

implemented

the corrective actions described

in the

May 19,

1987 letter

{ NMP1L-0154)

to

NRC.

3.3

(Open) violation (50-220/86-16-03)

Licensee

did not adhere

to high radiation area surveillance

requirements

specified .in Technical Specification.

The inspector

reviewed the corrective action described

in the licensee's

May 19,

1987 letter

(NMP1L-0154) to

NRC.

Inspector review of revised

radiation protection procedures

to address 'this violation indicated

the following:

The revised

procedures

did not adequately

describe

terms to be

indicated

on radiation work permits to implement the

surveillance

requirements

required

by technical specifications

(e.g.

What constitutes

"continuous monitoring7").

4.0

Or anization

and Staffin

The inspector

reviewed the organization

and staffing of'the Radiological

Controls

Program for Unit

1 and Unit 2.

The review was with respect to

criteria contained in Technical Specifications

and applicable licensee

procedures.

Licensee

performance

in this area

was evaluated

by:

review of applicable

documents;

observation of shift manning including backshifts;

discussions

with personnel.

Findin<is

Within the scope of the review, the following observations

were made:

The Radiological Controls organization

underwent

a major

reorganization

in late

1986.

The reorganization

resulted in the

establishment

of a separate

Radiation Protection

and Chemistry Group

versus

the previously combined Radiation Protection/Chemistry

group.

Applicable station procedures

were updated

to reflect the change

including modification of position responsibility and authorities.

However, the current Unit I and Unit 2 Technica1

Specifications

reflect the previous organizational

structure.

The licensee

has

previously submitted

a request

for

a change to the Technical

Specification.

The change

has yet to be approved.

The licensee

augmented

the Unit 2 shift Radiation Protection staff

to provide additional senior

level technicians for shift coverage

during start-up

and power ascension.

The Unit

1 facility was at power operation during the inspection.

One senior 'level

and

a junior level technician

were provided for

back shift radiological controls.

The provision of the

senior

technician

was in conformance with minimum Technical Specification

requirements.

The

ALARA coordinator

and

a Senior

ALARA Engineer recently left

licensee

employment,

The licensee has'ransferred

the site

ALARA

functions (both Unit

1 and Unit 2) under the oversight of the

Respiratory Protection/Internal

Dosimetry Supervisor.

The inspector noted:

This organization

change

has not been reflected in station

procedures.

The ALARA group has lost considerable

expertise with the termination

of the two individuals.

The licensee

has yet to select

permanent

personnel

to replace

these individuals.

The positions

are currently

filled by contractors.

(Note:

This organization

change is discussed

in section 7.0 ALARA).

5.0

Audits, Survei llances,

and Performance

Monitorin

The inspector

reviewed Radiological

Controls

Program audits

and

assessments

with respect

to criteria contained in applicable Technical

Specifications

and licensee

procedures.

The following matters

were reviewed:

0

Also

performance of audits

and assessment

at required frequencies;

quality and effectiveness

of audits

and assessments;

licensee .review and closure of finding.

reviewed

was the licensee's

performance monitoring program.

Documents

Reviewed

0

0

Safety

Review and Audit Board, Audit D, Radiological Audit, dated

March 27,

1986 (Unit 1);

Safety

Review and Audit Board, Audit D, Radiological Audit dated

May I, 1987

(Unit

1 and Unit 2);

Chemistry

and Radiation Protection

Management

Audit (SY-RG-IN-86022)

dated

March 11,

1987,

performed

December

15-19,

1986 (Nine Mile

1

and 2);

Radiation Protection

Program

Audit (SY-RG-IN-87005) dated April 24,

1987, performed

March 23 to

April 3,

1987 (Nine Mile 1);

Radiation Protection

Program

Audit (SY-RG-IN-87010) dated

August 7,

1987, performed

June 29-

July 9,

1987 (Nine Mile

1 and 2);

Selected

Radiological

Controls

Program

Performance

Monitoring

Reports;

Evaluation of licensee

performance

in the area

was

based

on:

review of documents;

and

discussion with cognizant licensee

personnel.

~Findin

Within the scope of the review, the following was identified:

The quality of licensee

audits

has

improved.

In light of

Radiological

Controls

Program deficiencies identified by the

NRC and

INPO, the licensee

has initiated aggressive

audits of infield work

practices

and the adequacy

and effectiveness

of Radiological

Control

provided for these practices.

Special

emphasis

was placed

on

personnel

performance.

In addition, the licensee

has committed to

perform multiple audits of the Radiological

Controls

Program for

purposes of identifying and correcting performance

problems.

Some

gA audit findings appear to be open for an extended

period of

time (e.g.

2 years).

An example

being

a finding dealing with

"establishment

of a continuous

breathing

zone sampling

program or

justify exceptions."

The finding was identified in a

1985 audit but

apparently is not scheduled

to be evaluated until the fourth quarter

of 1987.

The quality of the licensee's

surveillance

program

has

improved.

The survei llances

also focus

on personnel

performance

during

observation of infield work activities.

Follow-up of surveillance

findings was aggressive.

The licensee

audits of training and qualification of Radiological

Controls personnel

was not reviewed.

This will be reviewed in

subsequent

inspections.

Performance

Nonitorin

The licensee

has established

two major methods of Radiological

Controls

Program performance monitoring.

The first is

a monthly Performance

Nonitoring-Nanagement

Information document which includes Radiological

Controls

Program performance indicator charts.

This document is

distributed to applicable

personnel

including Senior Nanagement.

The

document tracks

among other items, total station exposure,

square

footage

of contaminated floor area, positive whole body counts

and violations.

Station goals are clearly shown

as well as performance relative to these

goals.

The second

document is

a recently established

Performance

Nonitor Report.

This document

assigns

to groups

and individuals, by name, specific

problems identified relative to group/individual performance.

Items

assigned. include radiological incident reports

and other concerns,

principally involving dosimetry.

Graphs

and charts clearly show overall

station performance

in each

area.

Group performance

in terms of number

of events is clearly shown.

Results

are reviewed for purposes

of root

cause

analyses.

However, goals for each

a'rea of performance

monitoring

has not been established.

Since this second report is relatively, new

(in- place about

3 months)

the licensee is currently reviewing its

effectiveness.

6.0

~Trainin

During

a previous inspection,

the inspector

noted that

some licensee

radiation protection personnel

and control

room operations

personnel

were

unaware of a document entitled Office Instruction for Key Control.

This

document describes

key control for access

to high radiation areas.

Licensee

personnel

committed to review this matter

and initiate

corrective actions to ensure appropriate

personnel

were familiar with the

document.

0

The inspector review of this matter indicated the following:

0'

Senior Radiation Protection 'Technician,

on standby watch at

Unit 1, was unfamiliar with the document

and

had not seen or read

it;

The document

had

been

placed in required reading 'for Unit

1,

temporary technicians.

However, it was not provided

as required

reading for Unit

1 permanent radiation protection technicians;

Multiple examples of individuals not signing off "immediately

required" reading material

were identified.

Some were not signed

off- as late

as

a month following issuance.

7.0

ALARA

The licensee's

ALARA program was evaluated

against criteria contained

in

the following:

Regulatory

Guide 8.8,

" Information Relevant

To Ensuring

The

Occupational

Radiation

Exposures

At Nuclear

Power Stations Will Be

As Low As Is Reasonably

Achievable

(ALARA);"

Regulatory

Guide 8. 10, "Operating Philosophy

For Maintaining

Occupational

Radiation

Exposures

As Low As Is Reasonably

Achieveable;"

Regulatory

Guide 8. 19, "Occupational

Radiation

Dose Assessment

In

Light-Water Reactor

Power Plants

Design Stage

Man-Rem Estimates."

"

Licensee

performance relative to these criteria was evaluated

by:

l

Discussions

with available

cognizant personnel;

'ours of radiologically controlled areas;

Review of station

ALARA goals;

Review of Site

ALARA Committee meeting minutes;

Review of Unit

1 ALARA Committee meeting minutes;

Review of departmental

exposure tracking;

Review of station procedures.

General

J

Inspectors

discussed

ALARA staffing, goal setting, trending

and program

changes with licensee. personnel.

~Findin

s

Within the scope of this inspection,

no violations were identified.

Inspectors identified staffing as

a potential

weakness

in the current

ALARA program.

Recently,

the

ALARA staff lost several

key personnel.

0

Goals

and goal setting methodoloay

was discussed

with licensee

personnel.

The licensee

is within the established

1987 person-rem

goal

and is

performing exposure 'tracking and tr ending.

Yionthly reports

are sent to

departmental

managers

and are dis'cussed

in Site

ALARA Committee

and

Unit

1 AL'ARA Committee meetings.

ALARA personnel

were found to be

informed on hot particle issues.

New ALARA staff was knowledgeable of

procedural

goal setting requirements.

Licensee staff identified several

opportunities

for improvement.

These were:

a reevaluation of survey methods

and frequencies

to reduce

technician

exposure;

increased

corporate

ALARA support to assist

the

new ALARA staff;

increased

management

support to reduce worker resistance

to ALARA

exposure controls.

8.0

External

Ex osure Controls

The inspectors

reviewed selected

aspects

of the External

Exposure

Control

- Program.

The areas

reviewed

and findings follow.

8. 1

Hi

h Radiation Area Control

High Radiation Area access

control

was reviewed with respect

to

criteria contained in Technical Specifications

and applicable

licensee

procedures.

Evaluation of a licensee

performance

in this area

was based

on:

performance of independent

radiat'ion surveys during plant

tours;

independent verification of access

control to selected

high

radiation areas;

performance of independent

key audits;

discussions

with personnel.

Within the scope of this review,

no violations were identified.

Observations

during the inspection indicated the licensee

was

adequately controlling access

to high radiation areas.

'I

8.2

Postin

and Labelin

The. licensee's.program

for the survey, posting,

and control of

radioactive materials

and radiological

areas

was reviewed against

the following criteria:

10 CFR 20.203,

"Caution signs, labels, signals

and controls;"

Technical Specification

6. 12, "High Radiation Area."

Licensee

performance

in this area

was evaluated

by the following

methods:

discussion with supervisory

and technician level personnel;

inspector tours

and independent

surveys of various radiological

work areas.

~Findin

s

During the course of this review,

no violations were identified.

One item of inspector

concern

was the labeling of a mini-rad check

source.

The

2 mCi Sr-90 check source

was labeled in an

inconspicuous

manner

such that approach

and handling

may be done

without recognition of the potential

hazard.

The licensee

immediately corrected this matter.

8.3

Personnel

Dosimetr

The inspector

reviewed the personnel

dosimetry program with respect

to criteria contained in:

10 CFR 20.202,

Personnel

Monitoring;

10 CFR 20.207,

Personnel

Monitoring Reports;

10 CFR 20. 101, Radiation

Dose Standard for Individuals in

Restricted

Areas;

10 CFR 20. 102, Determination of prior dose;

and

applicable licensee

procedures.

The licensee's

performance

in this area

was eval'uated

by the

following methods:

discussions

with supervisory

and technician-level

personnel;

tours of radiological

areas

and observations

of work

activities.

~Findin

s

Within the scope of this review,

no violations were identified.

However, multiple examples of personnel

improperly wearing dosimetry

were identified.

When questioned

by inspectors,

some individuals

were not knowledgeable of correct use of dosimetry.

Some

individuals indicated that radiation protection personnel

had

instructed

them to wear their dosimetry that way - incorrectly.

Radiation protection technicians

accompanying

inspectors

on tours

were inattentive to improper dosimetry use.

The licensee

indicated

this matter would be reviewed.

10

8.4

Radiation Measurin

Instrument

Area and Portable)

The review was performed with respect

to criteria contained in the

following:

Final Safety Analysis Report

(FSAR), Section

11.5, "Radiation

Monitoring Systems;"

Final Safety Analysis Report

(FSAR), Chapter

14, "Initial

Tests

Program;"

Regulatory

Guide 1.68,

November

1978, "Preoperational

and

Initial Start-up Test

Program for Water Cooled

Power Reactors;"

Procedure

N2-RTP-4, "Radiation Measurement

and Shield Integrity

Checks,

NMP-2;"

Procedure

N2-SAP-100, "Start-up

and Test

Program Description

and Organization;"

Procedure

N2-SAP-101, "Preparation

and Control of Start-up

Administration Procedures;"

Procedure

Nl-FHP-25,"General

Description of Fuel

Moves;"

Procedure

Nl-FHP-27,

"Whole Core Off Load-Reload;"

Procedure

N1.-ST-W10, "Refueling Platform High Radiation Monitor

Instrument

Channel Test;"

Procedure

IE.

Gene 014,

"Kaman Instrumentation

Model

KEM-A/KEM-P Radiation Monitors, Revision 0;"

ANSI/ANS 6.8.2-1981,

"Location and Design Criteria For Area

Radiation Monitoring Systems for Light Water Nuclear Reactors."

Licensee

performance relative to these criteria was determined

by:

Discussions with cognizant personnel;

Review of Unit 2 power ascension

and start-up test

survei llances;

Review of Unit

1 Technical Specification surveillances;

Observation of control

room display panels,

CRT display

monitors,

and

HP hourly/daily surveillance

records.

11

Findin

s

Area Monitors

No violations were identified.

All Technical Specification

surveillance

reouirements

examined

were found to have

been

'performed

and documented.

Discussions with, personnel

regarding operation of the

DRMS indicated

a working knowledge of the system.

Findin

s

Portable

Surve

Meters)

No violations were identified.

Instruments

were found to have

current calibration stickers.

Calibration and source

check

acceptance

criteria were met on all. instruments

examined;

9.0

Internal

Ex osure Control

and Assessment

. 9.1

General

The licensee's

program for control of internal

exposure

was reviewed

against criteria contained in the following:

10 CFR 20. 103, "Exposure of Individuals to Concentrations

of

Radioactive Materials in Air in Restricted Areas;"

NUREG - 0041,

"Manual of Respiratory Protection Against

Airborne Radioactive Materials;"

Regulatory

Guide 8.9, "Acceptable

Concepts

Models, Equations,

and Assumptions for a Bioassay

Program;"

4

Regulatory Guide 8.15,

"Acceptable

Programs for Respiratory

Protection;"

Regulatory

Guide 8.26, "Applications of Bioassay for Fission

and Activation Products."

The licensee's

performance

was determined

by:

0

Discussions with cognizant personnel;

Review of whole body countin'g

(MBC) records;

Inspection of the

HBC facility;.

Review of radiation work permit

(RWP) records;

Review of respirator

issuance

records

and user qualifications.

12

9.2

Whole Bod

Countin

WBC)

Within the scope of the. above review,

one apparent violation failure

to follow station procedures

was identified and is described

below:

Inspectors

reviewed monthly

WBC summaries

and selected

individual

exposure history files.

Two instances

were identified (in the

same individual's exposure

history file) in which Procedure

S-RTP-10 requirements

were

apparently

not followed.

Each instance

exceeded

Table

12, column

3

Bioassay Action Point of 25

nCi, for Co-60.

A.

On March 19,

1987,

a maintenance

worker's routine whole body

count indicated

an activity of 27.94'nCi.of Co-60.

The

individual's latest

RWP entry prior to March 19,

1987 was

March 6, 1987.

B.

On March 17,

1986, the

same maintenance

worker received

a

WBC

which indicated

an activity of 27.52

nCi of Co-60.

The licensee

was unable to provide the inspectors

an evaluati'on to

show what the radioactive material

intake (i.e. MPC-hour exposure)

of this individual was.

It was not apparent

as to when the actual

intake of radioactive material

had occurred or what the individual's

actual

exposure

was.

As a result,

the inspector indicated that failure to implement

procedure

S-RTP-10 was

an apparent violation of Technical

Specification.6. 11 (50-220/87-17-01).

Inspectors

reviewed

WBC calibration records

and control charts.

Calibration,

source

checks,

and background

checks

were found to, be

performed correctly and documented

accurately.

Within the scope of the review,

one item for improvement

was

identified:

9.3

Several

sources

are

used to provide calibration checks of whole body

counter.

It was not apparent that the activity of each

source

was

traceable,

either directly or indirectly, to

a

known standard,

(e.g.

National

Bureau of Standard

Sources).

Licensee

personnel

indicated the matter will be reviewed.

This

matter will be reviewed during

a follow-up inspection.

Res irator

Protection

No violations were identified within the scope of this inspection.

Respirator

issue

records

and recent Radiation

Work Permits

were

reviewed

by the inspector.

All individuals were found to have valid

13

medical

examinations

and to have

been qualified for the use of

resp'iratory protection equipment.

'0.0

~0-

0

The inspector

reviewed start-up radiation surveys.

The review was with

respect

to criteria contained in-

N2-SUT-2-0V, "Radiation Measurements

- Open Vessel

Test

Condition;"

N2-RTP-4, "Radiation Measurement

and Shield Integrity checks-

NMP-'2."

Evaluation of licensee

performance

in the area

was based on:.

Review of test results;

Discussion with personnel;

Review of survey instrument calibration;

and

Use of personnel

dosimetry.

~Findin

s

Within the scope of the review,

no violations were identified.

Survey results

were appropriately

reviewed

and approved.

Appropriately calibrated

instruments

were in use.

The licensee

was

taking special

precautions

regarding monitoring of personnel

exposure

to neutrons.

The licensee's

personnel

neutron monitoring

methods

were consistant with Regulatory

Guide 8. 14.;" Personnel

Neutron Dosimeters."

11.0 Radioactive

and Contaminated

Material Control

  • The inspector toured the controlled areas

and reviewed licensee control

of radioactive

and contaminated material.

Personnel

frisking practices

and housekeeping

was also reviewed.

The review of the area

was with respect

to applicable regulatory

requirements

and licensee

procedures.

Evaluation of licensee

performance

was based

on observations

during plant

tours,

independent

radiation surveys

performed

by the inspector,

and

discussion with cognizant personnel.

~ indi ncis

Within the, scope of the review,

no violation was identified:

Within the scope of this review, the following items needing licensee's

attention

were identified:

14

All whole body portal type frisking booths at the main egress

points

from Unit

1 and Unit 2 Radiological Controlled Area were out of

service.

The licensee

was utilizing hand held friskers.

Some personnel

were observed

performing improper frisking with hand

held friskers.

The licensee's

hot particle survey

and control program

has not been

fully established.

Procedures

addressing

this area

have yet to be

established.

Housekeeping

in the lower elevations of Unit 2 reactor building was

considered

poor.

Protective clothing was scattered

around, cotton

gloves were found stuffed in instrument racks,

and balls of tape

'ere

found in corners.

In addition, liquids were found running out

of posted

contaminated

areas

into non-contaminated

areas.

Licensee

personnel

indicated these

areas

would be reviewed

and

appropriate

action taken.

12.0 Evaluation of Off-scale Dosimeter Results

12.1 General

During installation of neutron source

pin holders in the Unit 2

Reactor Vessel,

on November 1, 1986, licensee

divers experienced

the

following dosimetry anomolies:

1.

The self reading pocket dosimeters

(SRD) worn on the chest

and

left arm of Diver

1 were found off-scale.

In 'addition, Diver

1

sustained

an unanticipat'ed

neutron

dose of 330 mrem to his

chest;

Diver 2 sustained

an unanticipated

380

mR exposure

to the

SRD

worn on his chest.

In addition, Diver 2 sustained

an

unanticipated

neutron

dose of 80 mrem to the chest;

Diver 3 sustained

an off-scale reading for the

SRD worn on his

right arm.

In addition, Divei

3 sustained

an unanticipated

neutron

dose of 20 mrem to his right arm.

Since pre-dive surveys

indicated

no significant neutron

or

gamma

dose would be received

by the divers, the licensee initiated an

investigation of the cause of the anomolies.

12.2 Licensee

Evaluation

and Conclusion

The licensee,'s

evaluation

and conclusions

were as follows:

The off-scale

SRDs were determined to have

been wet, resulting

in their discharging.

Water was visible in their plastic

holder.

15

The 'dosimeter that read

380 mrem was determined to be

malfunctioning.

Dropping the dosimeter resulted

in it

discharging to 380 mrem.

All film badge results

were reported

as minimal verifying that

no

gamma exposure

was received

by SRDs.

Neutron badge results

were re-checked

and verified correct.

The licensee

contracted with Gilbert Services

to perform dose

rate calculations at various distances

from the neutron

sources.

The calculations

confirmed the pre-dive neutron

survey results (i.e. minimal dose. rates).

A special instruction was wriften to perform underwater

gamma

surveys of the sources

using

a special

underwater

gamma probe.

Dose rates

were confirmed to be the

same

as pre-dive surveys

={i.e. minimal exposure rate).

A lucite phantom with similar dosimetry

was lowered next to the

source

holder locations.

Dosimetry results indicated minimal

exposues.

The licensee

was unable to establish

a circumstance

or dose

rates

which could have caused

the

anoma'1ous

neutron results,

The licensee

conservatively

assigned

the neutron whole body

dose results

to the divers.

12.3

NRC Review

The licensee's

evaluation

was considered

reasonable

and

comprehensive.

No violation was identified.

13.II ~Ei

The inspector

met with -licensee

personnel

denoted in Section

1 at the

conclusion of the inspection.

The inspector discussed

the purpose,

scope

and findings of the inspection.

No written material

was provided to the

licensee.

~

'