ML18033A933
| ML18033A933 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry |
| Issue date: | 08/24/1989 |
| From: | Carpenter D, Little W, Patterson C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML18033A930 | List: |
| References | |
| 50-259-89-33, 50-260-89-33, 50-296-89-33, NUDOCS 8909070227 | |
| Download: ML18033A933 (20) | |
See also: IR 05000259/1989033
Text
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UN IT E D STATES
NUCLEAR REGULATORY COMMISSION
REGION II
101 MARIETTASTREET, N.W.
ATLANTA,GEORGIA 30323
Report Nos.:
50-259/89-33,
50-260/89-33,
and 50-296/89-33
Licensee:
Valley Authority
6N 38A Lookout Place
1101 Market Street
Chattanooga,
TN
37402-2801
Docket Nos.:
50-259,
50-260,
and 50-296
License Nos.:
and
Facility Name:
Browns Ferry Units 1, 2,
and
3
Inspection at Browns Ferry Site near Decatur,
Inspection
Conducted:
July 15 - August 15,
1989
Inspector.
R.
r
n er,
NR
Sste
Manager
te
gne
A.
t
on,
N
Restart
Coord>nator
Da
Sl
Accompanied
by:
E. Christnot,
Resident
Inspector
W.'Bearden,
Resident
Inspector
K. Ivey, Resident
Inspector
A. Johnson,
Project Engineer
Approved by:
W.
S. Littl
,
t>on
C ref,
Inspection
Prog
ams,
TVA Projects Division
D
e Sl
ned
SUMMARY
Scope:
Resul ts:
This routine resident
inspection
included surveillance
observation,
maintenance
observation;
modification,
control
of high radiation
areas,
operational
safety verification, restart test
program,
site
management,
and organization.
A violation was identified for failu're to follow a SI procedure
and
review the results within the required
time period.
This resulted
in invalidation of the
and
equipment
being declared
paragraph
6. c.
A TS violation was identified when
two fire doors
were
found
open without compensatory
measures
taken,
paragraph
6.e.
e
This item was significant in that the two doors were
on
a frequently
traveled
path to the control
room
and plant
personnel
did not
question this condition.
The
licensee
demonstrated
good
planning
and
work control
in
successfully
completing the
condenser
vacuum test.
The maintenance
department
has
reversed
an
upward trend
and decreased
the
number of
open
MRs over the past
several
months.
The number of open
CA(Rs in
the maintenance
area
has
been
cut in half during this time period
also.
Greater
emphasis
has
been
placed
on
eliminating
late
preventive
maintenance
items.
These
improvements
were
observed
while
maintenance
provided timely support for accomplishing
the
condenser
vacuum test
and in-leakage
reduction.
A licensee
identified violation
was
identified
concerning
the
control of high radiation areas,
paragraph
4.
The licensee
action
to correct this problem was acceptable
and aggressive.
Housekeeping
in the
SBGT room should
be improved,
paragraph
6.d.
An unresolved
item concerning
LCO was identified, paragraph
6b.
This item needs
to be resolved with a
TS change prior to restart.
REPORT DETAILS
Persons
Contacted
Licensee
Employees:
~0. -Zeringue, Site Director
~G.
Campbell,
Plant Manager
R. Smith, Project Engineer
- J. Hutton, Operations
Superintendent
A. Sorrell, Maintenance
Superintendent
D. Mims, Technical
Services
Supervisor
G. Turner, Site equality Assurance
Manager
~P. Carier, Site Licensing Manager
"P. Salas,
Acting Compliance Supervisor
~J.
Corey, Site Radiological Control Superintendent
R. Tuttle, Site Security Manager
Other
licensee
employees
or contractors
contacted
included
licensed
reactor
operators,
auxiliary operators,
craftsmen,
technicians,
and
public safety officers;
and quality assurance,
design,
and engineering
personnel.
NRC Attendees
- W. Little, Section Chief
~D. Carpenter,
Site Manager
"C. Patterson,
Restart
Coordinator
"E. Christnot,
Resident
Inspector
"W. Bearden,
Resident
Inspector
"K. Ivey, Resident
Inspector
"Attended exit interview
Acronyms used throughout this report are listed in the last paragraph.
Surveillance
Observation
(61726)
The
inspectors
observed
and/or
reviewed
the
procedures
discussed
below.
The inspections
consisted
of
a review of the SIs for technical
adequacy
and
conformance
-to
TS,
verification of test
instrument
calibration,
observation
of the
conduct
of the test,
confirmation of
proper
removal
from service
and return to service of the
system,
and
a
review of the test
data.
The
inspector
also verified that limiting
conditions for operation
wer e met, testing
was accomplished
by qualified
personnel,
and the SIs were completed at the required frequency.
a.
The
inspector
reviewed
and
observed
the
performance
of 2-SI-2,
Instrument
Checks
and Observations.
The SI stated
the following:
This Surveillance
Instruction will ensure
instrument
checks
and
observations,
as
required
by the Technical Specifications
(TS),
are
performed.
The majority of the
instrument
checks
and
observations
are
required
on
a
once
per shift, daily,
or
semi-weekly
frequency.
A separate
Surveillance
Instruction is
not warranted to govern their performance.
This instruction fulfills most
once
per four hours,
once per
shift, daily,
and
weekly instrument
checks
and observations
required
by
the
Technical
Specification.
Although this
instruction
addresses
the majority of the requirements,
many
are
addressed
by other Surveillance
Instructions.
The waste
gas
radiation monitors
and liquid'effluent radiation monitors
are
two examples.
Attachment
C provides
a cross
reference
of
subject
Technical
Specification
and
the
section
of this
Surveillance Instruction which satisfies
the requirement.
This Surveillance
Instruction will be performed
once per week.
the
required
frequency
for individual surveillance
items
are
addressed
within this instruction
to fulfill both Technical
Specification,
Final
Safety
Analysis
Report,
and
regulatory
commitment requirements.
The
inspector
noted
that
by
the
use
of attachments
the
data.
entries
cover
a
seven
day period,
from
Sunday at 12:00
a.m.
to
Saturday
at
12:00 p.m.
Attachment
"A" covers
information
on
applicable
parameters
monitored
such
as
RHR Discharge
Pressure
and
and Hydrogen Concentration.
Attachment
B
is divided
up into three shifts with Shift One covering the morning
shift, Shift Two the
day shift,
and Shift Three the evening shift.
This attachment
is
used to record the various parameter
values.
The
NRC inspector
also
noted that the data
on Attachment "B" references
information that
can
be obtained
from Attachment "A".
The entries
reviewed
in the
were legible,
personnel
interviewed displayed
adequate
knowledge
of the SI,
and
the
covered
the
necessary
information needed to status
the unit on
a shift to shift basis.
b.
The
inspector
reviewed
a draft to Unit 2 surveillance
instruction
2-SI-3.3. 1.B,
ASME Section
XI Hydrostatic
Pressure
Testing of the
Reactor
Pressure
Vessel
and
Piping
Class
l.and
Class
2).
The
NRC inspector
noted items involving the
use
of
second
party
verification
instead
of
independent
verification,
the
adequacy
of identifying equipment
by number
and
name,
and the detail of individual step instructions.
These
items
were
discussed
with licensee
representatives.
The licensee
stated
that
an
approved
SI for the pressure
boundary test will be submitted
to the
NRC at least
30 days prior to performance.
C.
The inspector
observed
the July 20,
1989,
performance
of procedure
3-SI-4.5.C. 1(2)
"EECM Pump Operation Surveillance Instruction" which
was
to establish
the operability
of the
"Dl"
EECM
pump.
This
performance
was
required
when
the
licensee
identified that
the
July 14
performance
did not include
required
pump vibration data
(see
paragraph
6.b).
No deficiencies
were identified during .this
performance
of the SI.
No
violations
or
deviations
were
identified
in
the
Surveillance
Observation
area.
3.
Maintenance
Observation
(62703)
Plant
maintenance
activities
of selected
safety-related
systems
and
components
were observed/reviewed
to ascertain
that they were
conducted
.
in accordance
with requirements.
The following items
were considered
during this
review:
the limiting conditions for operations
were
met;
activities
were
accomplished
using
approved
procedures;
functional
testing
and/or calibrations
were performed prior to returning components
or system to service; quality control records
were maintained; activities
were
accomplished
by qualified personnel;
parts
and materials
used were
properly certified; proper tagout clearance
procedures
were
adhered
to;
Technical
Specification
adherence;
and
radiological
controls
were
implemented
as required.
Selected
maintenance
requests
were
reviewed
to determine
status
of
outstanding
jobs
and
to
assure
that priority
was
assigned
to
safety-related
equipment
maintenance
which might affect plant safety.
The
inspectors
observed
the
below listed maintenance
activities during
this report period:
101084
- This
MR involved the troubleshooting
and repair of a
failed relay in the Unit 3 Diesel
Generator
3D.
The failed relay
woul d not al 1 ow the
shutdown of the
DG from the control
room.
The
licensee
replaced
the
relay
and
returned
the
status.
The
system
engineer traced the hardware failure to a set of
contacts
on the relay.
MR 864197
and
864198
- These
MRs involved a failure of an equipment
drain line on the
emergency chiller for the Unit 1 and
2 Shutdown
Board
Rooms
"A" and "B".
The chiller filled with water
and spilled
over dripping onto the top of the
4160
V Shutdown
Board "A".
The
licensee
maintenance
personnel
disconnected
the drain line, flushed
it out,
used
a hose
and barrel to drain out the system,
and returned
the system to normal.
Activities involved with the
above
were controlled,
adequately
documented,
and
communications
between
the
various onsite
groups
were
satisfactory.
During this reporting period the licensee
was involved in an effort aimed
at establishing
a
vacuum
in the Unit 2 condenser.
The
NRC inspector
observed
and
reviewed
the following
MRs written to fix leaks,
repair
equipment,
and adjust instrumentation:
MR 900734 - Involved the
replacement
of gaskets
on the
Low Pressure
Turbine manways.
MRs 870030
and
101012x - Involved repairs
to the Unit 2 Mechanical
Vacuum
Pumps
"2A" and "2B".
A total of 25
MRs were identified during this evolution.
Although these
MRs involved non-safety
related activities
the
NRC inspector
considered
this as
a part of the
RTP.
Additional
were
reviewed
on
a
day to
day
basis
by the
outage
management
group.
Personnel
involved in these activities,
which were
required
to support
the
RTP procedure
displayed
a cooperative
attitude
and
a
systematic
approach
in accomplishing
the individual tasks.
The
licensee
representatives
also displayed the
same type of cooperation with
the
NRC inspector
as
they
have
had
when safety related activites
were
involved.
The maintenance
organization
over the past
few months
made
a significant
impact in reducing
the
number of open
and
CA(Rs.
From January
to
June
1989,
the number of open
MRs steadily increased
to 7500.
Since June,
the
number
of
has steadily
decreased
to
6225 except for a slight
increase
centering
around
the
condenser
vacuum test.
The number of open
CA(Rs related
to maintenance
has
been
reduced
from 59 in May to
28 in
August.
Increased
emphasis
has
been
placed
on eliminating
late
preventive
maintenance
items
in preparation
for restoring
systems
to
operation.
No
violations
or
deviations
were
identified
in the
Maintenance
Observation
area.
Control of High Radiation Areas
On July 18,
1989, at 6:20 p.m.,
a contract engineer
was found by a health
physics
technician
alone
inside the high radiation area posted
around the
Unit 2 fuel pool 'cooling
HX.
Contrary to the high radiation area entry
requirements
of Unit
2
number
89-2030,
revision
4 and Technical Specification 6.8.3
~ 1,
the engineer did not have in his possession
a dose
warning device,
a
dose
rate
instrument,
nor was
he accompanied
by anyone
who
had
one of these
devices
in their possession.
This area
was posted
with the
maximum
whole
body
dose
rate of 110 mr/hr.
The person
was
~ removed
from the
area
and
based
on his
had received
30
mRem during
the entry.
Discussion with the individual indicated that
he worked in
the
same
area
the previous
day and
had not obtained
a dose warning device
for that entry either.
Subsequently,
the individual's
TLD was processed
and
he was assigned
a total
dose for the quar ter of 145
mRem.
The root cause
for this event is personnel
error
due to inattention to
detail
by the contract
engineer.
The
engineer
failed to pay proper
attention to and comply with the requirements
stated
on the
RWP.
This is
considered
an isolated
event.
The last
known similar event
occurred in 1983.
As
a result of the event,
the licensee
took the following corrective
actions:
Removed individual from c-zone
and radiologically controlled area
Pulled individual's
TLD badge.
Revoked individual's Health Physics
general
employee training.
Revoked individual's access
to
BFNP protected
area.
Rewrote
RWPs to separate
from radiation areas.
Instituted
use
of
a
stamp
on the
RWP requiring individuals to
contact
RADCON before entering
Initiated
a
and
Condition
Adverse to Quality Report for the
event.
While this event is
a violation of the
RWP requirements
and
TS 6.8.3. 1,
the event
meets
the criteria for a licensee
identified violation.
The
event
was
discovered
by the licensee,
no other
known similar
events
have
occurred
since
1983,
exposure
limits were not exceeded,
and corrective
actions
were promptly completed.
This licensee
identified violation
is'ot
being cited
because
criteria specified in Section
V.G. of the
NRC
Enforcement
Policy were satisified..
No other follow-up on
NCV 259,
260,
296/89-33-01,
"Entry into High Radiation
Area Without Proper Monitoring
Device", is required.
Modifications (37700)
EECW Piping Modifications
The inspectors
continued
to review selected activities associated
with a
major
ongoing modification to
the Unit 2
EECW and
RCW systems.
This
modification is identified by
DCN H5121A and is part of the licensee's
corrective
actions
due
to the
discovery
of the
presence
of multiple
discharge
flowpaths which include vitrified clay piping in portions of
the
RCW buried yard piping.
Vitrified clay piping cannot
be seismically
qualified and the affected lines are part of the
EECW discharge
flow path
for various
safety related
components.
Additional information
on this
issue is included in
NRC Inspection
Report 89-10.
DCN
H5121A reroutes
the
EECM discharge
piping for the Unit 2 Shutdown
Board
Room Air Conditioning Units from the Unit 2 Reactor
Building RCW
discharge
line to the Unit 2
EECW discharge
piping which is seismically
qualified.
The
inspectors
observed
ongoing activities including welding of a
new
section
of six inch diameter
stainless
piping and
removal
of abandoned
EECM discharge
piping that
had
connected
to the
RCM system.
The unused
EECW connection to the 24-inch diameter
carbon steel
RCW was capped.
Although completed Quality Control inspection
records associated
with the
work were not yet available for review by the
NRC inspector,
no problems
associated
with any
ongoing
work were
noted.
Completed
pipe welding
appeared
adequate
with no visible flaws.
In this area, violations of deviations
were not identified.
6.
Operational
Safety Verification (71707)
The
NRC inspectors
were kept informed of the overall plant status
and any
significant
safety
matters
related
to
plant
operations.
Daily
discussions
were
held with plant
management
and various
members
of the
plant operating staff.
The
inspectors
made
routine visits to the control
rooms.
Inspection
observations
included
instrument
readings,
setpoints
and
recordings;
status
of operating
systems;
status
and alignments
of emergency
standby
.
systems;
onsite
and offsite
emergency
power
sources
available
for
automatic
operation;
purpose
of temporary
tags
on equipment controls
and
switches;
alarm status;
adherence
to procedures;
adherence
to
limiting conditions
for operations;
nuclear
instruments
operability.;
temporary alterations
in effect; daily journals
and logs;
stack monitor
recorder
traces;
and control
room manning.
This inspection activity also
included
numerous
informal discussions
with operators
and supervisors.
General
plant tours
were
conducted.
Portions of the turbine buildings,
each
reactor
building,
and
general
plant
areas 'ere
visited.
Observations
included valve positions
and
system
alignment;
and
hanger conditions;
containment
isolation alignments;
instrument readings;
housekeeping;
proper
power supply
and
breaker
alignments;
radiation area
controls;
tag controls
on
equipment;
work activities in progress;
and
radiation
protection
controls.
Informal
discussions
were
held with
selected
plant personnel
in their functional areas
during these tours.
a.
Unit Status
All three units
remained
in an
extended
outage
as part of the
BFNP
recovery
plan.
Units
1
and
3
are
defueled with Unit 2 in cold
shutdown
with fuel
loaded.
Mork activities continued
toward the
restart of Unit 2 in 1990.
No activity had begun
on Unit 1 and 3.
b.
TS
LCO for SBGT Exceeded
On July 17,
1989,
at 4:25 a.m.,
the licensee identified that
a
LCO
had expired
due. to the inoperability of SBGT train "C" for more than
7 days.
TS 3.7.B. la and 3.7.B.3 require that all three trains of the
SBGT be
at all times
when
secondary
containment is required except
that
one
SBGT train
may
be inoperable for seven
days during reactor
power operations
or fuel handling activities.
If these
requirements
'annot
be
met,
TS
3'.B.4 requires
that the unit be placed
in
a
condition where the
SHGT is not required.
SHGT train
"C" was
declared
on July 10,
1989,
at 4:25
a.m.,
when its
emergency
power
source,
the
"3D" Diesel
Generator
(DG),
was
taken
out of service for scheduled
maintenance.
The "3D"
DG was returned
to service at 4:45 a.m.,
on July 17,
1989,
and at
that time
SBGT train "C" was declared
This resulted in-
the
LCO being
exceeded
for 20 minutes.
Unit 2 could not be placed
in
a condition
where
the
SBGT: was
not required
because
secondary
containment
integrity is required
to
be maintained
at all times
except
when
certain
conditions
can
be
met,
including primary
containment
integrity.
Primary containment integrity could not be
met since Unit 2 was in cold shutdown with the reactor
and drywell
heads
removed.
The
delay
in returning
SBGT train
"C" to service
was
caused
by
delays
in the completion of work activities
on the "3D"
DG and were
not directly related
to the
SBGT.
Unit 2 was in cold shutdown with
the
reactor
vessel
loaded
and
no fuel
handling activiti'es
were
taking place.
The licensee
interpreted
the
TS
LCO as
meaning that the
seven
day
exclusion
applied
only during power operations
or while conducting
activities
above
the fuel pool.
The
NRC inspectors
questioned this
interpretation
and
raised
this
question
to the licensee's
Senior
management.
At the exit interview the licensee
committed to review
the
TS
LCO and submit
a TS change to the
NRC.
This is identified as
an
URI 259,
260,
296/89-33-02,
TS
LCO Exceeded
for
SBGT pending
NRC
review of the licensee's
TS review and change submittal.
Failure to Follow SI Procedure
On July 10,
1989,
the "Dl" EECW pump
was declared
when
its emergency
power source,
the
"3D"
DG,
was
taken out of service
for
scheduled
maintenance.
On
July
14,
1989,
procedure
3-SI-4.5.C. 1(2)
"EECM
Pump Operation
Surveillance
Instruction"
was
completed
to establish
operability of the "Dl" EECW
pump
and the
pump
was
subsequently
declared
on July 17,
1989,
when the
",3D"
DG was
returned
to service.
However,
on July 20,
1989, while
conducting
technical
reviews for the
SI, the licensee
identified
that the
SI performers
failed to take
complete
pump vibration data
as
required
by step
7. 13.24.
Vibration data
was required to satisfy
acceptance
criteria in the
and
the vibration acceptance
step
(7. 13.25)
was
signed off as being within the specified limits.
This
performance
was
then
invalidated
and
the
"Dl"
pump
was
declared
Therefore,
the
"Dl"
EECW pump
was
declared
on July 17, without completion of its operability test
and
was
not
per
the
TS.
The
licensee
reperformed
3-SI-4.5.C. 1(2) successfully
on July 20,
1989,
and declared
the "Dl"
Further
review of this
event
by the
licensee
revealed
that
a
completed
analysis
of the test
data
was
not performed within four
working days of the test
as
required
by 3-SI-4.5.C. 1(2) step
3.7.
Test
data
review was
not completed until July 21,
1989,
six days
after
completion of the test.
This review discovered
the missing
vibration data.
TS
6. 8. 1. 1. c
requires
that written
procedures
be established,
implemented
and maintained
covering surveillance
and test activities
for safety
related
equipment.
Site Directors
Standard
Practice
(SDSP)
2. 1, "Site Procedures
and Instructions,"
requires
that the
site
be operated
and maintained in accordance
with written, approved
procedures
and instructions
which
have
been
formally issued
and
distributed for use.
The failure to follow procedure 3-SI-4.5.c. 1(2)
was identified
as
a violation of Technical Specification 6.8. l. 1. c
(VIO 259,
260,
296/89-33-03,
Failure to Follow SI Procedure).
The
violation was
licensee
identified
, however,
since failure to follow
surveillance
procedures
is
a recurring problem that is yet to
be
corrected,
this violation will not
be
considered
a non-cited
violation.
Special
attention
should
be focused
on the root cause of
these
failures to preclude
their recurrence
in the
use
of any
procedure.
Safety
System
Malkdown
During
a routine tour of the
rooms
on August 2,
1989,
the
NRC
inspectors
noted the following:
Mater dripping from the overhead
onto
SBGT. Train "C" panel
4596
which contains
the
SBGT Train "C" control switch (0-HS-65-69B)
and
SBGT .Train "C" Outlet
Damper control switch (O-HS-65-67B).
The shift supervisor
was immediately notified of this problem.
The
moisture
indicating
switch for all three trains
were
removed.
A tag indicated
the switches
had
been
sent
back to
the factory to
be rebuilt.
These
switches
alarm in the control
room when relative humidity in the filter trains
exceeds
80K.
A possible fire hazard
from an
open
green poly bag containing
charcoal.
A radiological
control
concern
with yellow poly found in
a
green trash
can in the
SBGT building.
The "A" train fan motor contained
pieces
of metal
inside the
motor stator
casing in a ventilation opening.
There
was
an
open
conduit
above
the
charcoal
temperature
switches for all three trains.
A welding machine, tagged with an equipment-in-use
tag
showing
the location of the machine in the diesel
generator
room.
A loose
unsecured
ladder
was
on the floor.
Several
burnt out light bulbs in the building were found.
A sink or
wash basin
mounted
on
a cart not secured
or wheel
locked.
Numerous
leaks
in the
room
and
some indication of building
settlement
noted
by caulking or sealant pulled away at various
building seams.
0
A radioactive material
storage
sign lying on the floor.
In discussion
with the shift supervisor,
all trains of
SBGT were
considered
with no
known compensatory
measures
in place for.
any missing
alarms
or instrumentation.
All of the
above
concerns
were. discussed
with operations
management
immediately following the
tour.
Operations
management
took prompt action to correct
these
items
and
kept the
NRC inspector
informed of the corrective actions
taken.
Breach of Fire Doors
At 5:00
p.m.
on August 6,
1989 while on backshift plant tour the
NRC
inspector
identified
two
examples
of breached
fire doors.
TS
3. 11.G. l.a
requires
that
"with
one
or
more
of the
required
fire-rated
assemblies
and/or
sealing, devices
inoperable, within one
hour establish
on at least
one side of the
affected
assembly(s)
and/or
sealing
device(s)
or verify the
operability of fire detectors
on at least
one side of the inoperable
assembly(s)
or sealing
device(s)
and establish
an hour fire watch
patrol."
Procedure
Revision 3, "Fire Protection-Attachments",
implements
the
above
TS requirements.
Per FPP-2,
Attachment
F, Fire
Protection
Equipment
and Barrier Penetration
Removal
From Service
Permit should
have
been
completed
and
approved
by the
SOS prior to
blocking the fire doors
open.
Additionally, step
5.7 of FPP-2,
Attachment
F requires
that
a copy of the permit shall
be placed at
the
location of the
impairment
and step
5.0 requires
compensatory
measures
be in place, if required,
before the impairment.
Mhile on tour,
the
NRC inspector
noted fire rated
door
607 wedged
open with two welding leads
running
down to the landing between Unit
1
8
2 cable
spreading
rooms.
Craftsmen in the area
were setting
up
for work when
asked if they
had
a valid Attachment
F.
They were
unsure
and di,rected
the
NRC inspector
to the job foreman.
The
NRC
inspector
was
on
the
way to the
ASOS to check the Attachment
F
printout
when fire rated
door
455
located
by the control
bay
elevator
was
observed
wedged
open.
Inspection of the door indicated
the
door
knob
was missing,
thus it too was impaired.
No attachment
F was
posted.
The Attachment
F printout did not
have either door
listed
as authorized
to
be impaired.
The
SOS
was contacted
and
he
had
no
knowledge of either
door being authorized
as impaired and
no
compensatory
measures
were in effect.
The
SOS took prompt action
on
both situations.
The significance
of this issue
is that both doors
are in the main
route
to the control
room.
The
NRC inspectors
observations
were
made just after shift change.
Someone
must have passed
through
one
or both of the propped
open fire doors before the
NRC inspector,
but
they took
no action to resolve the unacceptable
condition.
This is
an
example of licensee
personnel
having "blinders"
on while in the
plant for situations
that
are
not their
primary
assignments.
Additionally,
the
individuals
who
impaired
the
doors
failed to
0
10
follow procedures,
violated
TS,
and
compromised
the
BFN fire plan.
This is
a violation (259,
260,
296/89-33-04,
Breach of Fire Rated
Door.)
f.
At 10: 00
a. m.,
on August
10,
1989,
an engineered
safety feature
(ESF) actuation
occurred
when
a high radiation isolation signal
was
received
due to the control
room air supply duct radiation monitor,
O-RH-90-259B,
source
being inserted for an
unknown
reason.
There
were several
pipe insulators working in the vicinity of the radiation
monitor
and
they
may
have
inadvertently
caused
insertion of the
calibration
source.
The
ESF actuation
resulted
in
a control
room
ventilation isolation
and
auto start of train "A" of the control
room emergency
ventilation
(CREV) system.
The "B" train of CREV was
out of service for maintenance.
An operability
and functional test
were performed
before placing the radiation monitor back in service.
The licensee
made
a 4-hour
non-emergency
ENS report to the
NRC duty
officer.
This issue will be followed up during the review of the
associated
LER;
At 5:50 p.m.,
on August
10,
1989,
diesel
generator
"B" became
when
both starting air
compressors
were lost during
maintenance.
This
made
the
"2C"
pump
and
"2C" Core Spray
pump
as well.
At the time of the event,
Loop II of both the
system
and
the
Core
Spray
system for Unit 2 as well
as
the
standby
coolant
supply valve (j.-FCV-23-57) were already
for maintenance.
This left only the
2A
pump
and the
2A Core
Spray
pump available
for makeup to the Unit 2 reactor vessle.
Mith
the Unit 2 reactor
vessel
at atmospheric
pressure,
the
minimum
TS
requirements
are
2
pumps
and
one Core Spray
pump..
The licensee
made
a 4-hour non-emergency
ENS report to the
NRC duty officer.
The licensee
repaired
the compressor
and returned the
DG to service.
This issue will be followed
up during the review of the associated
LER.
Two violations
and
an unresolved
item were identified in the Operational
Sa fety Ver ificati on ar ea.
7."
Restart Test
Program
(99030B)
The inspector
maintained
cognizance
of ongoing restart test activities,
and monitored particular activities in detail
as appropriate.
Specific
inspection
observations
during this
reporting
period
involved
the
activities
associated
with
procedure
2-BFN-RTP-ICF,
Revision
000,
ICF, Section 5.4,
"Turbine Systems
Integrated
Functional."
The overall
purpose
of the
ICF was not only to check out systems,
but also to have
the various plant operations
personnel
line
up
and operate
such
systems
as
condensate,
reactor building closed
cooling water, control rod drive,
and
feed water.
Included within the test procedure
is an appendix which
was
used
by the
Test Director to document
the activities of the
operators.
This
appendix
indicated
which operator
received
hands
on
experience
for which
system.
The activities
monitored
during this
reporting period
were
those
needed
to establish
a
vacuum in the Unit 2
11
condenser.
The
NRC inspector
noted that all personnel
associated
with
the test
demonstrated
a professional
approach to the required activities
and indicated
as
a group
an
adequate
knowledge of the
systems
required
for. establishing
the
vacuum.
The licensee utilized the mechanical
vacuum
pumps to establish
a pressure
of 10 inches
Hg absolute
and shifted to the
.
SJAE to further reduce
pressure.
The acceptance
criteria for this
procedure
is
30
SCFM to the offgas
system
from the
SJAE.
During the
first attempt
at establishing
a
vacuum
using
the
the
pressure
dropped to approximately
one
inch
Hg absolute with 350
CFM to the offgas
system.
After identifying several
leaks,
the licensee
was able to lower
the
CFM to 100.
The
NRC inspector
rioted that during this activity the operators
referred
to the pressure
in the Unit 2 condenser
in terms of "vacuum";
However,
the
indicator in the control
used
by the
operators
is
an
absolute
pressure
indicator which uses
inches of mercury.
It was also noted that
operating
procedure
2-0I-66,
"Off-Gas
System
Operating
Instructions,"
Section
5. 1, step
5. 1.7.26 states:
Verify main
condenser
vacuum,
as
indicated
on Hotwell Press
and
Temperature
recorder,
2-P-TR-2-2,
Panel
2-9-6, is > 20 inches
Hg.
Notes
in the procedure
also refer to the pressure
in the
condenser
in
terms of vacuum rather
than absolute
pressure.
When the operators
were
asked
about
the pressure
in the Unit 2 condenser
they replied in terms of
vacuum
such
as,
the
vacuum is indicating
20 inches.
The control panel
indicator
was setting
on a reading of 10 inches.
This difference
between
the control
room indicator
and
the procedures
was discussed
with the
licensee.
No violations or deviations
were identified in the Restart Test Program
area.
Site Management
and Organization
(36301,
36800,
40700)
The licensee
was
able to accomplish
a milestone
toward plant recovery
by
successfully
completing
a condenser
vacuum test.
Good planning
and work
control
enabled
the test to
be carried
out
and significantly reduce
the
air
in-leakage.
During
various
meetings,
the
licensee
desplayed
a
genuine
concern
for
balance
of plant
equipment
and
performance
of
preventive
maintenance
items in an effort to upgrade
the overall material
condition of the plant.
Despite
the effort made in accomplishing
the
physical
work, the
licensee
continues
to have difficulty closing out the
engineering
paperwork for work activities.
Efforts are
being
made to
improve engineering
output with some
gains noted.
Additional contractor
support is being applied to this concern.
Exit Interview (30703)
The inspection
scope
and findings were summarized
on August 15,
1989 with
those
persons
indicated
in paragraph
1 above.
The inspectors
described
the
areas
inspected
and
discussed
in detail
the
inspection
findings
12
listed below.
The licensee
did not identify as proprietary
any of the
material
provided
to
or
reviewed
by
the
inspectors
during this
inspection.
Dissenting
comments
were not received
from the licensee.
,The licensee
committed to review the
TS
LCO associated
with URI 259,
260,
296/89-33-02,
and to revise the
TS to clarify the requirements
pertaining
to
SBGT operability.
Item
259,
260, 296/89-33-01
259,
260, 296/89-33"02
259,
260, 296/89-33-03
259,
260, 296/89-33-04
Descri tion
NCV, Entry Into High Radiation Area Without
Proper Monitoring Device, paragraph
4.
URI,
TS
LCO Exceeded for SBGT, paragraph
6. b.
VIO, Failure to Follow SI Procedure,
paragraph
6. c.
VIO, Break of Fire Rated Doors,
paragraph
6. e.
ASOS
BFNP
CAQR
DCN
Hg
ICF
LCO
~ LER
NRC
RCW
SDSP
SOS
TS
American Society of Mechanical
Engineers
Assistant Shift Operations
Supervisor
Browns Ferry Nuclear
Power Plant
Condition Adverse to Quality Report
Cubic Feet per Minute
Design
Change
Notice
Diesel Generator
Emergency
Equipment Cooling Water
Integrated
Cold Functional
Limiting Condition for Operation
Licensee
Event Report
Maintenance
Request
Nuclear Regulatory
Commission
Raw Cooling Water
Residual
Heat
Removal
Radiological Incident Report
Restart Test Program
Radiological
Work Permit
Site Director Standard
Practice
Standby
Gas Treatment
System
Surveillance
Instruction
Shift Operations
Supervisor
Thermoluminescent
Dosimeter
Technical Specifications
Valley Authority
Violation
i /
~