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                                                    APPENDIX B
APPENDIX B
                                    U. S. NUCLEAR REGULATORY COMt!!SSION
U. S. NUCLEAR REGULATORY COMt!!SSION
                                                  REGION IV
REGION IV
                                                                                              i
i
                                                                                            '
'
.            NRC Inspection Report:     50-267/88-12                     License: DPR-34
NRC Inspection Report:
            Docket:   50-267
50-267/88-12
            Licensee: Public Service Company of Colorado ~ (PSC)
License: DPR-34
                                                                                    .
.
  ,
Docket:
            Facility Name:   Fort St. Vrain Nuclear Generating StationE                 <
50-267
                                                                                                  '
Licensee: Public Service Company of Colorado ~ (PSC)
      -
.
            Inspection At:   Fort St. Vrain (FSV) Nuclear Generating Station, Platteville,
Facility Name:
                                -Colorado
Fort St. Vrain Nuclear Generating StationE
                                                                  '
<
            Inspection Conducted: May 1-3 , 1988                                 ,                   -
'
<
,
                                              ~
-
                                                                                              8" M
Inspection At:
    '
Fort St. Vrain (FSV) Nuclear Generating Station, Platteville,
            Inspectors:         - -
-Colorado
                                            JJtO
Inspection Conducted: May 1-3 , 1988
                                                                                      '
'
                            -R. E. Farrell Senior Resident Inspector (SRI)               Date
,
-
<
~
'
JJtO
'
8" M
Inspectors:
-
-
-R. E. Farrell Senior Resident Inspector (SRI)
Date
f
f
                                      $ n>0                 77                         h/AQ
$ n>0
77
h/AQ
P. W. McliTu'd, ResTden
nTpector (RI)
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                              P. W. McliTu'd, ResTden    nTpector (RI)                  Tate'
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                              K. L. Heitner, NRR Project Manager
4 - 20 '8J'
                                                                M
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                                                                r
K. L. Heitner, NRR Project Manager
                                                                                          4 - 20 '8J'
Date
                                                                                        Date          '
r
            Approved:           7' [.
'
                              T. F. Westerman, Chief
Approved:
                                                          _                              6 -7/-W
7' [.
                                                                                        .Date
_
                                Reactor Projects Section B
6 -7/-W
T. F. Westerman, Chief
.Date
Reactor Projects Section B
i
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                PDR   ADOCK0500g7
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                                                                    2
2
            Inspection Summary
Inspection Summary
            Inspection Conducted May 1-31, 1988 (Report 50-267/88-12)
Inspection Conducted May 1-31, 1988 (Report 50-267/88-12)
            Areas Inspected:         Routine, unannounced inspection of operational safety
Areas Inspected:
            verification, licensee event report review, monthly maintenance observation,
Routine, unannounced inspection of operational safety
            monthly surveillance observation, radiological protection, and monthly security
verification, licensee event report review, monthly maintenance observation,
            observation.
monthly surveillance observation, radiological protection, and monthly security
            Results: Within the six areas-inspected, no violations were identified.
observation.
            One deviation was identified in paragraph 3.
Results: Within the six areas-inspected, no violations were identified.
One deviation was identified in paragraph 3.
,
,
1
1
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                                                DETAILS-
')
          1. Persons Contacted
DETAILS-
              PSC
1.
              D. Alps, Supervisor, Security
Persons Contacted
              *M. Block, Systems Engineering Manager
PSC
              *F. Borst, Nuclear Training Manager
D. Alps, Supervisor, Security
              *L. Srey, Manager, Nuclear Licensing and Resources
*M. Block, Systems Engineering Manager
              *M. Cappello, Central Planning and Scheduling Manager
*F. Borst, Nuclear Training Manager
              *R. Craun, Nuclear Engineering Manager
*L. Srey, Manager, Nuclear Licensing and Resources
;             D. Evans, Superintendent, Operations                                             :
*M. Cappello, Central Planning and Scheduling Manager
a'           *M. Ferris, QA Operations Manager                                                 i
*R. Craun, Nuclear Engineering Manager
              *C. Fuller, Manager, Nuclear Production-             .
;
D. Evans, Superintendent, Operations
:
a'
*M. Ferris, QA Operations Manager
i
*C. Fuller, Manager, Nuclear Production-
.
*J. Gramling, Supervisor, Nuclear Licensing Operations
"
"
              *J. Gramling, Supervisor, Nuclear Licensing Operations                            ,
,
              *M. Holmes, Nuclear Licensing Manager
*M. Holmes, Nuclear Licensing Manager
              *F. Novachek, Nuclear Support Manager'         .
*F. Novachek, Nuclear Support Manager'
                                                                                                '
.
>
'
              *R. Sargent, Assistant to Vice President', Nuclear Operations
*R. Sargent, Assistant to Vice President', Nuclear Operations
              *L. Scott, QA Services Manager
>
              *N. Snyder, Maintenance Department Manager
*L. Scott, QA Services Manager
              *P. Tomlinson, Manager, QA
*N. Snyder, Maintenance Department Manager
              R. Walker, Chairman of the Board and CEO
*P. Tomlinson, Manager, QA
              *D. Warembourg, Manager, Nuclear Engineering
R. Walker, Chairman of the Board and CEO
              *R. Williams Jr. , Vice President, Nuclear Operations
*D. Warembourg, Manager, Nuclear Engineering
              W. Woodard, Health Physicist
*R. Williams Jr. , Vice President, Nuclear Operations
              The NRC inspectors also contacted other licensee and contractor personnel
W. Woodard, Health Physicist
              during the inspection.
The NRC inspectors also contacted other licensee and contractor personnel
during the inspection.
~
~
                                                                            ~
* Denotes those attending the exit interview conducted June 9,1988.
              * Denotes those attending the exit interview conducted June 9,1988.
~
,                                                                                               .
,
.
'
'
          2. Plant Status
2.
              The reactor was operating at 80 percent power level at the close of the
Plant Status
The reactor was operating at 80 percent power level at the close of the
.
inspection period.
The reactor was critical 31 percent of the inspection
!
!
.
period with turbine generator capacity factor of 13.8 percent for the
              inspection period. The reactor was critical 31 percent of the inspection
inspection period.
              period with turbine generator capacity factor of 13.8 percent for the
The reactor scrammed-on May 6,1988, following a
              inspection period. The reactor scrammed-on May 6,1988, following a
helium circulator trip caused by a control systems malfunction.
              helium circulator trip caused by a control systems malfunction. The
The
              reactor was again taken critical on May 18. The turbine generator was
reactor was again taken critical on May 18.
              returned to service May 26. The reactor was run below turbine generator
The turbine generator was
              service levels from May 18-26, 1988, for reactor coolant cleanup.
returned to service May 26.
                                                                                                i
The reactor was run below turbine generator
              During the inspection period the licensee implemented a.reorganizution of
service levels from May 18-26, 1988, for reactor coolant cleanup.
              its nuclear operations. This ha, been a much talked about reorganization,         !
i
During the inspection period the licensee implemented a.reorganizution of
its nuclear operations.
This ha, been a much talked about reorganization,
:
:
which has been in the planning stage for almost 2 years. The NRC
*
*
              which has been in the planning stage for almost 2 years. The NRC
inspectors will closely monitor licensee's activities as the reorganization
              inspectors will closely monitor licensee's activities as the reorganization
takes effect.
,
,
              takes effect.
.
                                                                                                .
T
T                                                                                                r
r
- -
-
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-
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- . - .
.-.
.
-
-
- -
- -


          .           .         -   ..   _.           _     __             _   ..   -   .   . _
.
              .-       .
.
    ,           ,
-
                                                                '
..
                                                                4
_.
                3.   . Operational Safety Verification (71707)
_
                        The NRC inspectors reviewed' licensee activities to ascertain that the
__
                        facility is being operated safely and in conformance with regulatory
_
                        requirements and that the licensee's management control system is
..
                        effectively discharging its responsibilities for continued safe operation.
-
                        The NRC inspectors toured the control room on a daily basis during' normal
.
                        working hours and at least twice weekly during backshift hours. -The
.
                        reactor operator and shif t supervisor logs and Technical Specification
_
                        compliance logs were reviewed daily. The'NRC inspectors observed proper
.-
                        control room staffing at all times and verified operators were attentive
.
                        and adhered to approved procedures.       Control room instrumentation was -
,
                        observed by the NRC inspectors and the operability of the plant protective
,
                        system and nuclear instrumentation system were verified by the NRC
'
                        inspectors on each control room tour. Operator awareness.and
4
                        understanding of abnormal or alarm conditions was verified. The NRC
3.
                        inspectors reviewed the operations order book, operations deviation
. Operational Safety Verification (71707)
                        report (0DR) log, clearance log, and temporary configuration report-(TCR)
The NRC inspectors reviewed' licensee activities to ascertain that the
                          log to note any out-of-scrvice safety-related systems and to verify
facility is being operated safely and in conformance with regulatory
                        compliance with Technical Specification requirements.
requirements and that the licensee's management control system is
                        The licensee's management representatives were observed in the control
effectively discharging its responsibilities for continued safe operation.
                        room on a daily basis prior to the beginning of the day shift.
The NRC inspectors toured the control room on a daily basis during' normal
                        The NRC inspectors verified the operability of a safety-related system on
working hours and at least twice weekly during backshift hours. -The
j                       a weekly basis. The reserve shutdown system, helium purification system,
reactor operator and shif t supervisor logs and Technical Specification
                        prestressed concrete reactor vessel (PCRV) penetration purge flow, and
compliance logs were reviewed daily.
                        control rod drive motors and purge flows were verified operable by the NRC
The'NRC inspectors observed proper
                        inspectors during this report period.- During plant tours, particular
control room staffing at all times and verified operators were attentive
                        attention was paid to components of these systems to verify valve
and adhered to approved procedures.
                        positions, p wer supplies, and instrumentation were correct for current
Control room instrumentation was -
                        plant conditions.
observed by the NRC inspectors and the operability of the plant protective
                        Shift turnovers were observed at least weekly.by the NRC inspectors.         The-
system and nuclear instrumentation system were verified by the NRC
                        information flow appeared to'be good, with the shift supervisors routinely         l
inspectors on each control room tour.
                        soliciting comments or concerns from reactor operators, equipment                   )
Operator awareness.and
                        operators, and auxiliary tenders.                                                   l
understanding of abnormal or alarm conditions was verified.
                        The NRC inspectors responded to the control room following a reactor scram
The NRC
                        on May 6, 1988. The scram occurred after "B" helium circulator tripped
inspectors reviewed the operations order book, operations deviation
                        due to an upset in the Loop 1 bearing water surge tank. Approximately
report (0DR) log, clearance log, and temporary configuration report-(TCR)
;                       2 minutes later a reactor scram on high hot reheat steam temperature
log to note any out-of-scrvice safety-related systems and to verify
                        occurred.       This was due to a failure of the cold reheat steam
compliance with Technical Specification requirements.
                        attemperation flow to automatically increase following the circulator
The licensee's management representatives were observed in the control
                        trip. .Following the trip it was discovered that the hot reheat
room on a daily basis prior to the beginning of the day shift.
,                        temperature signal supplied to the overall plant control. system had
The NRC inspectors verified the operability of a safety-related system on
!
j
                        drifted such t N t it was reading 35 F below actual hot reheat steam
a weekly basis.
                                                                                                            I
The reserve shutdown system, helium purification system,
                                                                                                            ,
prestressed concrete reactor vessel (PCRV) penetration purge flow, and
a                                                                                                           l
control rod drive motors and purge flows were verified operable by the NRC
  -
inspectors during this report period.-
      , - -. ,. _, _                   .-   , , . . .                                                   w
During plant tours, particular
attention was paid to components of these systems to verify valve
positions, p wer supplies, and instrumentation were correct for current
plant conditions.
Shift turnovers were observed at least weekly.by the NRC inspectors.
The-
information flow appeared to'be good, with the shift supervisors routinely
soliciting comments or concerns from reactor operators, equipment
operators, and auxiliary tenders.
The NRC inspectors responded to the control room following a reactor scram
on May 6, 1988.
The scram occurred after "B" helium circulator tripped
due to an upset in the Loop 1 bearing water surge tank.
Approximately
;
2 minutes later a reactor scram on high hot reheat steam temperature
occurred.
This was due to a failure of the cold reheat steam
attemperation flow to automatically increase following the circulator
trip. .Following the trip it was discovered that the hot reheat
temperature signal supplied to the overall plant control. system had
,
!
drifted such t N t it was reading 35 F below actual hot reheat steam
,
a
-
, - -. ,. _, _
.-
, , . . .
w


                          .- .                                 .-
.- .
.-
.;
.
,
,
  .; .
5
                                          5
temperature.
      temperature.   The plant protective system, which was verified to have been
The plant protective system, which was verified to have been
      reading actual hot reheat steam temperature, thus saw the actual hot
reading actual hot reheat steam temperature, thus saw the actual hot
      reheat steam temperature reach the scram setpoint before the control
reheat steam temperature reach the scram setpoint before the control
      system detected anything abnormal.
system detected anything abnormal.
      Because of recent problems with radioactive releases via the core support
Because of recent problems with radioactive releases via the core support
      floor vent following a plant trip, the reactor _ operators were attempting
floor vent following a plant trip, the reactor _ operators were attempting
      to reduce primary coolant pressure as fast as reasonably possible
to reduce primary coolant pressure as fast as reasonably possible
      following the trip. The rate at which the primary coolant was being
following the trip.
      vented exceeded the capacity of the low temperature absorber in the helium
The rate at which the primary coolant was being
    purification system. This caused the low temperature absorber.to heat up
vented exceeded the capacity of the low temperature absorber in the helium
      and off gas into the coolant which was being vented into the helium
purification system.
      storage bottles. The off gassing of radioactive noble gases resulted in
This caused the low temperature absorber.to heat up
      radiation 1. ab a high as 125 mr/hr in the helium storage bottle area,
and off gas into the coolant which was being vented into the helium
    which was quickly posted as a high radiation area. The NRC inspectors
storage bottles.
      verified the dose rate at the posted boundaries was within the
The off gassing of radioactive noble gases resulted in
      requirements of 10 CFR 20.202. The situation was quickly recognized and
radiation 1. ab a high as 125 mr/hr in the helium storage bottle area,
      the rate of primary coolant depressurization was reduced. It was
which was quickly posted as a high radiation area.
      subsequently determined that the corrective actions taken to address the
The NRC inspectors
    problem with the core support floor vent were successful in precluding the
verified the dose rate at the posted boundaries was within the
      need to rapidly depressurize the PCRV.
requirements of 10 CFR 20.202.
    During the PCRV depressurization, the operating purified helium compressor
The situation was quickly recognized and
      tripped. This resulted in a loss of buffer helium wakeup which, in turn,
the rate of primary coolant depressurization was reduced.
      resulted in a small amount of primary coolant flowing down the shaft of
It was
    "C" and "D" helium circulators. This primary coolant then mixed with
subsequently determined that the corrective actions taken to address the
    bearing water and ended up in the reactor building. It was subsequently
problem with the core support floor vent were successful in precluding the
      released to the atmosphere via the plant vent stack. The reactor building
need to rapidly depressurize the PCRV.
    atmosphere was measured at 3.6 E-8 microcuries per CC, and the accumulated
During the PCRV depressurization, the operating purified helium compressor
    dose at the site boundary was calculated to be 1.94 E-7 Rems.
tripped.
    The NRC inspectors were in the control room immediately following the
This resulted in a loss of buffer helium wakeup which, in turn,
      reactor scram and remained there until the plant was stabilized. The
resulted in a small amount of primary coolant flowing down the shaft of
      licensee's operations personnel were observed to be in control of the
"C" and "D" helium circulators.
    plant at all times and responded to the event in a professiunal manner.
This primary coolant then mixed with
      The licensee in a power ascension on May 26, 1988, experienced difficulty
bearing water and ended up in the reactor building.
      in stroking valves HV-2292 and HV-2293. These valves are hydraulically
It was subsequently
    operated valves which direct main steam flow from the startup bype s
released to the atmosphere via the plant vent stack.
    system to the main steam bypass system in preparation for startint iie       i
The reactor building
    turbine generator. These two valves must stroke closed during powa           l
atmosphere was measured at 3.6 E-8 microcuries per CC, and the accumulated
    ascension after the main steam temperature reaches 760 F. The hydraulic
dose at the site boundary was calculated to be 1.94 E-7 Rems.
    actuator on each of these valves is equipped with thermal relief valves to
The NRC inspectors were in the control room immediately following the
    protect the actuator against hydraulic pressure surges. It was a thermal
reactor scram and remained there until the plant was stabilized.
      relief valve on HV-2292 failing to reset which initially led to the fire
The
    experienced October 2, 1987.                                                 l
licensee's operations personnel were observed to be in control of the
    The problem experienced during this inspection period with HV-2292 and       l
plant at all times and responded to the event in a professiunal manner.
    HV-2293 was with the thermal relief valves associated with the hydraulic     !
The licensee in a power ascension on May 26, 1988, experienced difficulty
    actuators. A relief valve on HV-2292 was leaking slowly and was               i
in stroking valves HV-2292 and HV-2293.
    subsequently replaced. This is normal after very few strokes of the
These valves are hydraulically
                                                                                  I
operated valves which direct main steam flow from the startup bype s
                                                                                  :
system to the main steam bypass system in preparation for startint iie
turbine generator.
These two valves must stroke closed during powa
ascension after the main steam temperature reaches 760 F.
The hydraulic
actuator on each of these valves is equipped with thermal relief valves to
protect the actuator against hydraulic pressure surges.
It was a thermal
relief valve on HV-2292 failing to reset which initially led to the fire
experienced October 2, 1987.
The problem experienced during this inspection period with HV-2292 and
HV-2293 was with the thermal relief valves associated with the hydraulic
actuators.
A relief valve on HV-2292 was leaking slowly and was
i
subsequently replaced.
This is normal after very few strokes of the
-
-
-
-
-
- - - -
-
-
-


                                                ..   ..     .   _               -.                                           ._ . _               __ ._
..
                                                                                              4
..
                    ..               .
.
      ,
_
      .
-.
                                                                              6
._ . _
'                                                                                                                                                        '
__
                                      relief valve.     The relief valve on HV-2293' failed to reseat af ter HV-2293
._
                                      was stroked closed. The oil flow relieving through the thermal relief                                               ,
4
                                      valve was stopped by reopening HV-2293.. The thermal relief valve was
..
                                      replaced, and HV-2293 was again closed.                 Again the themal relief valve
.
                                        lifted, failed to reseat, and re.lieved oil to the oil recovery system.
,
                                      Again the oil flow was stoped by opening HV-2293.                               The licensee noted
.
                                      that the oil flow through tie thermal relief salve on the actuator of
6
                                      HV-2293 was greater than expacted. There is a flow orifice 27 mils in
'
                                      diameter installed upstream of these thermal relief valves to restrict
relief valve.
                                      this oii flow. Additionally, restricting this-oil. flow serves to protect
The relief valve on HV-2293' failed to reseat af ter HV-2293
                                      the relief valves and prolong service life of the relief valves. In-
'
                                      October 1987, it was' discovered that the orifice upstream of the thermal
was stroked closed.
                                      rolief valve on HV-2292, which led to the fire, was not installed and
The oil flow relieving through the thermal relief
                                      consequently the oil flow experienced was greater than could be handled by
,
  ,                                    the oil recovery system.
valve was stopped by reopening HV-2293.. The thermal relief valve was
replaced, and HV-2293 was again closed.
Again the themal relief valve
lifted, failed to reseat, and re.lieved oil to the oil recovery system.
Again the oil flow was stoped by opening HV-2293.
The licensee noted
that the oil flow through tie thermal relief salve on the actuator of
HV-2293 was greater than expacted.
There is a flow orifice 27 mils in
diameter installed upstream of these thermal relief valves to restrict
this oii flow.
Additionally, restricting this-oil. flow serves to protect
the relief valves and prolong service life of the relief valves.
In-
October 1987, it was' discovered that the orifice upstream of the thermal
rolief valve on HV-2292, which led to the fire, was not installed and
consequently the oil flow experienced was greater than could be handled by
the oil recovery system.
,
J
J
j                                     While NRC inspectors watched, the thermal relief valve and associated
j
;
While NRC inspectors watched, the thermal relief valve and associated
                                      piping was disassembled on HV-2293. The flow orifice upstream of the
;
                                      relief valve was missing. The licensee recovered the documentation of the
piping was disassembled on HV-2293.
                                      disassembly, inspection, and reassembly of HV-2293 following the
The flow orifice upstream of the
                                      October 1987 fire and verified that mechanics had installed the flow
relief valve was missing.
                                      orifice and that quality control inspectors had witnessed the                                                       ;
The licensee recovered the documentation of the
                                        installation. Additionally, the parties involved who had actually                                                 i
disassembly, inspection, and reassembly of HV-2293 following the
                                      performed the work and inspection in 1987 were interviewed by the licensee                                         ,
October 1987 fire and verified that mechanics had installed the flow
                                      and insisted that they had indeed performed this work as documented. The
orifice and that quality control inspectors had witnessed the
  i                                    licensee stated to the NRC inspectors that the men involved were
;
l                                   considered to be particularly reliable. The mechanics probed the
installation.
                                      connecting piping of the hydraulic actuator and did find the flow orifice.
Additionally, the parties involved who had actually
                                      This flow orifice is a screw which screws into a fitting and has a 27 mil
i
                                      diameter hole drilled in it. Apparently this screw had vibrated out of
performed the work and inspection in 1987 were interviewed by the licensee
                                      its fitting and fallen into a portion of the actuator piping where it
,
                                      could not perform its function.
and insisted that they had indeed performed this work as documented.
                                      The licensee reinstalled the orifica and reassembled the actuator on
The
1                                     HV-2293.     HV-2292 and HV-2293 were successfully stroked closed and power
licensee stated to the NRC inspectors that the men involved were
i
l
considered to be particularly reliable.
The mechanics probed the
connecting piping of the hydraulic actuator and did find the flow orifice.
This flow orifice is a screw which screws into a fitting and has a 27 mil
diameter hole drilled in it.
Apparently this screw had vibrated out of
its fitting and fallen into a portion of the actuator piping where it
could not perform its function.
The licensee reinstalled the orifica and reassembled the actuator on
1
HV-2293.
HV-2292 and HV-2293 were successfully stroked closed and power
3
3
                                      ascension continued. The licensee is preparing to disassemble and inspect                                           i
ascension continued.
;                                   all hydraulic actuators with this type of orifice and will take corrective
The licensee is preparing to disassemble and inspect
                                      steps to assure that the orifices are installed in a manner which
i
                                      precludes vibrating out of position. The NRC inspectors will follow this
;
all hydraulic actuators with this type of orifice and will take corrective
steps to assure that the orifices are installed in a manner which
precludes vibrating out of position.
The NRC inspectors will follow this
a: tion and this is considered an open item (267/8812-01).
3
3
                                      a: tion and this is considered an open item (267/8812-01).                                                        .;
.;
,
By letter dated July 10, 1985, the licensee committed to follow certain
                                      By letter dated July 10, 1985, the licensee committed to follow certain                                             l
l
!                                     Interim Technical Specifications concerning reactivity control at FSV.
,
                                      Interim LCO 3.1.1.C states for a control rod drive (CRD) to be considered
!
                                      operable, there must be helium purge flow to each CRD penetration when
Interim Technical Specifications concerning reactivity control at FSV.
                                      reactor pressure is above 100 psia. Interim SR 4.1.1.A.2 requires that                                               l
Interim LCO 3.1.1.C states for a control rod drive (CRD) to be considered
                                      purified helium flow to each CRD be verified by verifying flow at each                                               '
operable, there must be helium purge flow to each CRD penetration when
                                      subheader. The purpose of these requirements is to limit the upward flow
reactor pressure is above 100 psia.
                                      of contaminated helium coolant to the CRD mechanism in the CRD
Interim SR 4.1.1.A.2 requires that
  ;                                   penetrations.                                                                                                       l
purified helium flow to each CRD be verified by verifying flow at each
'
subheader.
The purpose of these requirements is to limit the upward flow
of contaminated helium coolant to the CRD mechanism in the CRD
;
penetrations.
l
]
]
,
,
0
0
    . - - - - - , _ - - - . - - , , , - . . - -              -
. - - - - - , _ - - - . - - , , , - . . - -
                                                                            _ - _ . - . , , ,         - - . . - , . - - -             - , . , . .
_ - _ . - . , , ,
- - . . - , . - - -
- ,
. , . .
-


.,.
.
,
,
  .,. .
7
                                            7
On May 18, 1988, at about 1500 hours and on May 19, 1988, at about-
      On May 18, 1988, at about 1500 hours and on May 19, 1988, at about-
0815 hours, the inspcctor observed helium flow at the subheaders
      0815 hours, the inspcctor observed helium flow at the subheaders
(FI-11268-3, 4, and 7) was reading zero or below iero.
      (FI-11268-3, 4, and 7) was reading zero or below iero. At the same time,
At the same time,
        flow indication for some individual CRD penetrations read zero or below
flow indication for some individual CRD penetrations read zero or below
      zero. (These flow indicat$ons were read both locally in the reactor
zero.
      building and remotely in the control room.).
(These flow indicat$ons were read both locally in the reactor
      At this time the reactor pressure was above 100 psig (172 psig on May 19
building and remotely in the control room.).
      at 0815 hours). _ The inspector observed that the licensee's-
At this time the reactor pressure was above 100 psig (172 psig on May 19
        instrumentation did not indicate compliance with LC0 3.1.1.C. .The
at 0815 hours). _ The inspector observed that the licensee's-
        licensee stated that the instrumentation might_not read correctly because
instrumentation did not indicate compliance with LC0 3.1.1.C.
      of reduced reactor-coolant density (approximately 39 percent of full
.The
      value).
licensee stated that the instrumentation might_not read correctly because
      The NRC inspectors requested the licensee provide the surveillance
of reduced reactor-coolant density (approximately 39 percent of full
      procedure to satisfy the requirements of Interim SR 4.1.1.A.2 and
value).
      compliance with Interim LC0 3.1.1.C. The licensee provided pages from the
The NRC inspectors requested the licensee provide the surveillance
      reactor building equipment operator round sheet. This sheet required only
procedure to satisfy the requirements of Interim SR 4.1.1.A.2 and
      that the subheader flow be greater than zero in order to satisfy the
compliance with Interim LC0 3.1.1.C.
      LC0 3.1.1.C.
The licensee provided pages from the
      The NRC inspector noted that this criteria for surveillance of subheader
reactor building equipment operator round sheet.
      purge flow does not reflect the reactor's design criteria. Specifically,
This sheet required only
      the licensee's Reference Design Manual, 50-11-6, notes the helium purge
that the subheader flow be greater than zero in order to satisfy the
      flow is to be 5.5 lbs/hr per penetration (at full helium density). The
LC0 3.1.1.C.
      greater than zero criteria would also allow instrumentation error to
The NRC inspector noted that this criteria for surveillance of subheader
      falsely indicate that there is adequate flow.
purge flow does not reflect the reactor's design criteria.
      The NRC inspectors concluded that the licensee's current surveillance
Specifically,
      procedure is inadequate.
the licensee's Reference Design Manual, 50-11-6, notes the helium purge
      In subsequent discussions with the inspector, the licensee stated that by
flow is to be 5.5 lbs/hr per penetration (at full helium density).
      reducing all indications to a common basis, approximately 2.5 to
The
      2.8 ACFM of flow was indicated at 170 psia for the total system. By
greater than zero criteria would also allow instrumentation error to
      contrast, the control system was set to deliver 7.4 ACFM. Thus, the
falsely indicate that there is adequate flow.
      system was not operating correctly when observed by the NRC inspector. The
The NRC inspectors concluded that the licensee's current surveillance
      licensee was informed of the NRC inspector's' observation of the apparent
procedure is inadequate.
      malfunction of the control 'systet.s for helium purge.
In subsequent discussions with the inspector, the licensee stated that by
      It is not apparent that the licensee has implemented measures to assure-
reducing all indications to a common basis, approximately 2.5 to
      compliance with his July 10, 1985 commitment to follow Interim Technical
2.8 ACFM of flow was indicated at 170 psia for the total system.
      Specification LC0 3.1.1.C. ThisIsanapparentdeviation(267/8812-02).
By
      On a tour of the control room, the NRC inspectors found a television set
contrast, the control system was set to deliver 7.4 ACFM.
      and a connected video tape machine in the kitchen behind the: atrol
Thus, the
      boards within 'he control room vital area. The equipment wa3 not in use
system was not operating correctly when observed by the NRC inspector.
      at the time. but the NRC inspectors immediatelv interviewed the licensee's
The
      operations suW rin,endent as to why this equipment was in the control
licensee was informed of the NRC inspector's' observation of the apparent
      room. The operati(ns superintendent explained that people on shift could
malfunction of the control 'systet.s for helium purge.
      not attend regular 1y scheduled safety meetings. Consequently, the
It is not apparent that the licensee has implemented measures to assure-
      licensee was videc taping the safety meetings and allowing the operating
compliance with his July 10, 1985 commitment to follow Interim Technical
Specification LC0 3.1.1.C.
ThisIsanapparentdeviation(267/8812-02).
On a tour of the control room, the NRC inspectors found a television set
and a connected video tape machine in the kitchen behind the:
atrol
boards within 'he control room vital area.
The equipment wa3 not in use
at the time. but the NRC inspectors immediatelv interviewed the licensee's
operations suW rin,endent as to why this equipment was in the control
room.
The operati(ns superintendent explained that people on shift could
not attend regular 1y scheduled safety meetings.
Consequently, the
licensee was videc taping the safety meetings and allowing the operating


                  __     __ _ __                   _     _     _             __
__
    , .
__ _
  ,
__
                                                8
_
        crew to watch the video : o of the meeting >when.they could. This
_
        activity was taking place       at kitchan.behind the control boards ir,     the-
_
        control room vital area. li MC 'nspcctors inquired as to why-this
__
        activity had to take place in     -    ontrol room since the control roon,
, .
        operators could not perform ti         technical specification required
,
        licented activities in front         une control boards and also watch tne
8
        video tape simultaneously. The operations superintendent agreed and the
crew to watch the video :
        - equipment was removed from .,he control roo'm vital area to an office area
of the meeting >when.they could.
        nearby where on shift personnel, who are not renuired to be. in tha
This
        control room at their stations, can watch the video tapes of-the safety
o
        meetings during their shifts. The licensee advised the NRC inspectors
activity was taking place
        that persons required by Technical Specifications.to be at their stations
at kitchan.behind the control boards ir, the-
        within the control room will, in the future, watch the video tape of the
control room vital area.
        safety meetings after being relieved from their pest.
li
        There-has been r.o time when the NRC inspectors have observed less than
MC 'nspcctors inquired as to why-this
        minimum Technical Spec:rication required manning ~in front of the control
activity had to take place in
        panels in the control room. At no time ilave the NRC inspectors observed
ontrol room since the control roon,
        on-duty licensed reactor operators watching television or participating in
-
        other activities-that would divert their attention from their duties.
operators could not perform ti
        During tours of the facility, the NRC inspectors noted that the average
technical specification required
        age of deficiency report tags (DRTs) appears to be growing. The DRT
licented activities in front
        system developed by the licensee identifies equipment already logged as
une control boards and also watch tne
        requiring maintenance and also allows observers to trace the maini,enance
video tape simultaneously.
        requests pending to repair the equipment. However, the NRC inspectors
The operations superintendent agreed and the
        noted that the requests once gene.'ated do not appear to be closed in a
- equipment was removed from .,he control roo'm vital area to an office area
        timely manner. Observed examples are as follows.
nearby where on shift personnel, who are not renuired to be. in tha
              DRT 004061 on valve V-6223 is dated Septemt,er 3,1986.
control room at their stations, can watch the video tapes of-the safety
              DRT 004062 on valve V-6222 is dated September 3,1986.
meetings during their shifts.
              ORT 010055 on valve V-91141 is dated January 26, 1988. This is a
The licensee advised the NRC inspectors
              hydraulic system valve and the LRFdocuments a missing hand wheel.
that persons required by Technical Specifications.to be at their stations
              The h6nd wheel was still: missing on May 6, 1988. The NRC inspector
within the control room will, in the future, watch the video tape of the
              noted that a: missing hand wheel on a: hydraulic system valve aggravated
safety meetings after being relieved from their pest.
              the fire experienced October 2, 1987.         The valve part is on back
There-has been r.o time when the NRC inspectors have observed less than
              01 der.
minimum Technical Spec:rication required manning ~in front of the control
panels in the control room.
At no time ilave the NRC inspectors observed
on-duty licensed reactor operators watching television or participating in
other activities-that would divert their attention from their duties.
During tours of the facility, the NRC inspectors noted that the average
age of deficiency report tags (DRTs) appears to be growing.
The DRT
system developed by the licensee identifies equipment already logged as
requiring maintenance and also allows observers to trace the maini,enance
requests pending to repair the equipment.
However, the NRC inspectors
noted that the requests once gene.'ated do not appear to be closed in a
timely manner. Observed examples are as follows.
DRT 004061 on valve V-6223 is dated Septemt,er 3,1986.
DRT 004062 on valve V-6222 is dated September 3,1986.
ORT 010055 on valve V-91141 is dated January 26, 1988.
This is a
hydraulic system valve and the LRFdocuments a missing hand wheel.
The h6nd wheel was still: missing on May 6, 1988.
The NRC inspector
noted that a: missing hand wheel on a: hydraulic system valve aggravated
the fire experienced October 2, 1987.
The valve part is on back
01 der.
'
'
              DRT 004450 on M-82, a broken box protecting instrument valves, is             ;
DRT 004450 on M-82, a broken box protecting instrument valves, is
              dated January 25, 1987.                                                         '
dated January 25, 1987.
                                                                                            i
'
              DRT 005054 on valve HV-2189-8 dated August 5, 1987.
i
        The licensee has been informed of the NRC inspector's observation of the           l
DRT 005054 on valve HV-2189-8 dated August 5, 1987.
        excessive time required to close DRTs. The licensee is cornidering actions
The licensee has been informed of the NRC inspector's observation of the
        to address this issue. This item is considered an open itoa (267/8812-03).
l
        On a tour of the 480 V switchgear room, the NRC inspectors noted that some
excessive time required to close DRTs.
        electrical cable conduits were quite warm to.the touch. The licensee's
The licensee is cornidering actions
                                                                                            1
to address this issue.
                                                                                            !
This item is considered an open itoa (267/8812-03).
                                                                                            ,
On a tour of the 480 V switchgear room, the NRC inspectors noted that some
electrical cable conduits were quite warm to.the touch.
The licensee's
1
,
.---- -- .a..--
. --
- - -
.- .-.
--- .
----- --. -a-
.
- - - - . -
..-e


  - _ - _ ..             .-           .                       _       _ .._           .   . .
- _ - _ ..
.-
.
_
_ .._
.
.
.
*
*
              .. .
..
  ,           .
.
                                                        '9
.
,
'9
'
shift supervisor, maintenance manager, and electrical maintenance
supervisor were interviewed regarding these conduits.
This condition had
previously been identified by' licensee _ personnel.
The licensee'.s .
~
engineering organization has.determinedithat-the cable in these. conduits
~
is qualified'to.a' higher temperature than canibe tolerated by' human touch.
~
Consequently, the cables were within their qualified parameters.
The
licensee also advised that' the particular conduits carried power. cables :to
a bearing water pump motor.
This'is.a large 480 V motor and the conduit
temperature'is expected to be warm when the motor is running.
No violations or deviations ware identified in the review of this program
area.
4.
Review of Licensee Event Reports (LERs) (90712)
The NRC inspectors reviewed the LERs listed below during this inspection
period.
This review verified that each.LER was submitted within-the
required time, the description of the occurrence is accurate, a root cause
was established where possible, and the corrective actions taken or
proposed are appropriate.
The five LERs reviewed were found to be
acceptable in these areas. The LERs are:
LER 88-07, Surveillance Procedure not_ Performed Mithin Technical
Specification Interval Due to Error in Computer Scheduling Program
LER 88-06, Expansion Joint Failure Causing Losa of Circulating Water
Resulting in a Manual Scram
LER 88-05, Neutron Flux Rate of Change High Scram (while shut down)
LER 88-04, Manual Scram Due to Power' Grid Fluctuecions
LER 87-23, Revision 1, HV-2292 Oil Leak Caused Fire and Manual Scram
Mo violations or deviations were identified in the review of this program
area.
;
i
5.
Monthly Maintenance Observation (62703)
The NRC inspectors monitored the licensee's efforts to troubleshoot tL
prestressed concrete reactor vessel (PCRV) penetration interspace purge
flow indication, FI-11263, located in the control room.
This instrument
.
is used to verify compliance with Technical Specification 4.2.7, which
requires the interspace between primary and secondary PCRV penetration
seals to be pressurized.
A purge flow of purified helium maintains this
pressurization.
ORT 9282 identified a problem with flow indication FI-11263 cycling
between 0 and 3 ACFM.
The flow element was removed and cleaned, which
'
'
                  shift supervisor, maintenance manager, and electrical maintenance
returr.ed the instrument to its normal indication of cycling-between l'and
                  supervisor were interviewed regarding these conduits. This condition had
2 ACFM.
                  previously been identified by' licensee _ personnel. The licensee'.s .
The licensee's system engineer then performed a test of an
                                                                      ~
-
                                                                                                  ~
- - -
                  engineering organization has.determinedithat-the cable in these. conduits
-
                  is qualified'to.a' higher temperature than canibe tolerated by' human touch.
-
                                                    ~
-
                  Consequently, the cables were within their qualified parameters. The
-
                  licensee also advised that' the particular conduits carried power. cables :to
- -
                  a bearing water pump motor. This'is.a large 480 V motor and the conduit
-
                  temperature'is expected to be warm when the motor is running.
--
                  No violations or deviations ware identified in the review of this program
- ..
                  area.
-
              4.  Review of Licensee Event Reports (LERs) (90712)
- .
                  The NRC inspectors reviewed the LERs listed below during this inspection
- -
                  period. This review verified that each.LER was submitted within-the
-
                  required time, the description of the occurrence is accurate, a root cause
                  was established where possible, and the corrective actions taken or
                  proposed are appropriate. The five LERs reviewed were found to be
                  acceptable in these areas. The LERs are:
                          LER 88-07, Surveillance Procedure not_ Performed Mithin Technical
                          Specification Interval Due to Error in Computer Scheduling Program
                          LER 88-06, Expansion Joint Failure Causing Losa of Circulating Water
                          Resulting in a Manual Scram
                          LER 88-05, Neutron Flux Rate of Change High Scram (while shut down)
                          LER 88-04, Manual Scram Due to Power' Grid Fluctuecions
                          LER 87-23, Revision 1, HV-2292 Oil Leak Caused Fire and Manual Scram
                  Mo violations or deviations were identified in the review of this program
                  area.                                                                             ;
                                                                                                    i
              5. Monthly Maintenance Observation (62703)
                  The NRC inspectors monitored the licensee's efforts to troubleshoot tL
                  prestressed concrete reactor vessel (PCRV) penetration interspace purge
                  flow indication, FI-11263, located in the control room. This instrument
                        .
                  is used to verify compliance with Technical Specification 4.2.7, which
                  requires the interspace between primary and secondary PCRV penetration            i
                  seals to be pressurized. A purge flow of purified helium maintains this          !
                  pressurization.
                  ORT 9282 identified a problem with flow indication FI-11263 cycling
                  between 0 and 3 ACFM.      The flow element was removed and cleaned, which        '
                  returr.ed the instrument to its normal indication of cycling-between l'and
                  2 ACFM.    The licensee's system engineer then performed a test of an


      -         _
-
                                              -   =- .                     -                   . . -                             . - .       ...                 - .
_
            . -         ;                                                                             '
-
        ,                                                                             ,
=- .
                                                                        .             ~10
-
                                                                                    .
. . -
                            electrical-dampening circuit which took a 2-minute average of.the
. - .
                            normally cycling signal and gave a time averaged,-steady indication. -.This
...
.                          test was performed under. test procedure:T-362, which the NRC inspectors
- .
                            reviewed and'found acceptable. The purpose of this test was.to prove;the
. -
                            feasibility of modifying the instrument .to provide a mcre steady, but -                                                 -
;
                            still meaningful, indication. . Based on the. licensee's evaluation of the
'
                            test data, a permanent change notice is being developed-to modify the
,
                            circuitry for this instrument. The NRC inspectors will monitor the                                                                                     i
,
                            licensee's progress in this area.
.
                            The NRC resident inspector followed the licensee's actions to check the
~10
                            operation of the Loop 1 bearing water s Jrge tank level control system
.
                            following the plant trip on May 6, 1988. .A level excursion in the Loop 1
electrical-dampening circuit which took a 2-minute average of.the
                            bearing water surge tank was the cause of the loss.of "B" helium
normally cycling signal and gave a time averaged,-steady indication. -.This
                            circulator, which was followed by a reactor scram. Troubleshooting
test was performed under. test procedure:T-362, which the NRC inspectors
                            efforts discovered the Hi-Hi level dump valve on the surge tank was
.
                            opening at an approximately 18 inch leQ. The surge tank-. level is.
reviewed and'found acceptable.
                            normally controlled at 17 inches with the Hi Hi level dump valve set at
The purpose of this test was.to prove;the
                            23 inches. The licensee was not able to establish a reason for the Hi-Hi
feasibility of modifying the instrument .to provide a mcre steady, but -
                            level dump valve setpoint being as found. The fact that it was operating                                                                               i
-
                            at that point does explain how a level excursion could have occurred under
still meaningful, indication. . Based on the. licensee's evaluation of the
                            normai operations. The NRC inspectors verified both the Loop 1 and Loop 2
test data, a permanent change notice is being developed-to modify the
                            bearing water surge tank level controls were calibrated prior to returning
circuitry for this instrument.
                            to power operation.
The NRC inspectors will monitor the
                            During power ascension, the fluid in the main steam lines at FSV goes from
i
                          water to wet steam to superheated steam depending upon the'. power level at                                                                             ,
licensee's progress in this area.
                            the time. Consequently, the safety relief valves in the main steam lines
The NRC resident inspector followed the licensee's actions to check the
                            are designed to handle water, wet steam, or superh_eated steam. ' The                                                                                   #
operation of the Loop 1 bearing water s Jrge tank level control system
                            particular design of these safety relief valves causes them to perform
following the plant trip on May 6, 1988. .A level excursion in the Loop 1
                            best and co be most leak tight when exposed to superheated steam. The
bearing water surge tank was the cause of the loss.of "B" helium
                            manufacturer does recommend gagging leaking valves when the working                                                                                       i
circulator, which was followed by a reactor scram.
                            fluid is water or we' Jte6m. There are three safetyfrelief valves on each
Troubleshooting
                          main steam line and t w wer operated relief valve on each main steam line.
efforts discovered the Hi-Hi level dump valve on the surge tank was
                            Each of the safety relief valves'(SRV) will pass approximately 34 percent.                                                                               <
opening at an approximately 18 inch leQ.
                            of the full flow of its associated main steam line,
The surge tank-. level is.
                                                                                                                                                                                    j
normally controlled at 17 inches with the Hi Hi level dump valve set at
                          On May 25, 1988, the NRC inspectors noted that SRV V-2214 was gagged in                                                                                   I
23 inches.
                          main steam Loop 1 and SRV V-2245 was gagged in main steam Loop 2.                                                             The NRC                     l
The licensee was not able to establish a reason for the Hi-Hi
                            inspectors interviewed the maintenance supervisor responsible-for gagging                                                                               1
i
                            the valves and reviewed station service requests (SSRs) 88503122, which
level dump valve setpoint being as found.
                          authorized gagging V-2245, and SSR 88503082, which authorized gagging.
The fact that it was operating
                          V-2214.             The NRC inspectors noted that in both cases quality control had
at that point does explain how a level excursion could have occurred under
                            inspected the installation of the gags on the safety relief valves and that                                                                               !
normai operations.
                            SSRs for gagging safety relief valves stay open until the gag is again-                                                                                 '
The NRC inspectors verified both the Loop 1 and Loop 2
                            removed. The controlled work instructions (part of the SSR) stated iri a
bearing water surge tank level controls were calibrated prior to returning
                            note to Step 8, "Gag must be removed before going above 30 percent." The.
to power operation.
                          NRC inspectors verified by personnel interview, documentation review, and
During power ascension, the fluid in the main steam lines at FSV goes from
                            visual inspection that the-gags were removed from the safety relief valves-                                                                             !'
water to wet steam to superheated steam depending upon the'. power level at
                          when the facility went above 30 percent power.
,
                                                                                            4
the time.
                                                                      S
Consequently, the safety relief valves in the main steam lines
  r v   r s       s-.-au       vv p c~ p--.-,gV4     w ,re s s ,. e r N w - n --     r,v r ,w v s - m + r ~-,-r- m. -.*s, +-,-+--~e.   - -e-~>-   + t -e st,e- o,r e v .---r-
are designed to handle water, wet steam, or superh_eated steam. '
#
The
particular design of these safety relief valves causes them to perform
best and co be most leak tight when exposed to superheated steam.
The
manufacturer does recommend gagging leaking valves when the working
fluid is water or we' Jte6m.
There are three safetyfrelief valves on each
main steam line and t w wer operated relief valve on each main steam line.
Each of the safety relief valves'(SRV) will pass approximately 34 percent.
<
of the full flow of its associated main steam line,
j
On May 25, 1988, the NRC inspectors noted that SRV V-2214 was gagged in
main steam Loop 1 and SRV V-2245 was gagged in main steam Loop 2.
The NRC
inspectors interviewed the maintenance supervisor responsible-for gagging
1
the valves and reviewed station service requests (SSRs) 88503122, which
authorized gagging V-2245, and SSR 88503082, which authorized gagging.
V-2214.
The NRC inspectors noted that in both cases quality control had
inspected the installation of the gags on the safety relief valves and that
SSRs for gagging safety relief valves stay open until the gag is again-
'
removed.
The controlled work instructions (part of the SSR) stated iri a
note to Step 8, "Gag must be removed before going above 30 percent." The.
NRC inspectors verified by personnel interview, documentation review, and
visual inspection that the-gags were removed from the safety relief valves-
when the facility went above 30 percent power.
'
4
S
r v
r s
s
s-.-au
vv p c~ p--.-,gV4
w
,re s s ,. e r N w - n --
m- e-- n
r,v r ,w v s - m +
r
ve
~-,-r-
m.
es
-.*s,
+-,-+--~e.
-
-e-~>-
+
t
-e st,e-
r-
o,r e v
.---r-


    _         ._             -
_
                                    -                   _-                 ._           - ._         _         .      . .    .
._
        ... ,
-
  ,  ,
-
                                                                  11
_-
                                                                                                                            <
._
                                                                                    '
- ._
                    The NRC inspectors also reviewed the documentation and witnessed portions
_
                    of the work of SSR 88500302 "Perform Quarterly Inspection." - This was.the
.
                    flushing and quarterly maintenance on the "B"-Instrument Air Compressor.
. .
                    The preventative maintenance was being performed according to.
.
                    Procedure MP-7055 (Q), Issue 1,'"Quarterly Inspection and Preventative
... ,
                    Maintenance, Guardner-Denver Instrument: Air Compressor." The SSR~also
,
                    incorpt.ated by Reference Procedure ME-iO51, . Issue 3, "Guardner-Denver Air
,
                    Compressor, Coolant System, Chemical Cleaning Procedure Using Rydlyme."                                    1
11
                    No violations or deviations were identified in the review of this program
                    area.
      6.            Monthly Surveillance Observction (61726}
                    Ouring the course of the inspection period,.the NRC inspectors monitored
                    the Technical Specification 1 surveillance logs'to assure that Technical
                    Speciff ation required surveillances were current. Additionally, they
                    observed performance of parts of the following surveillances:
                          Emergency Diesel Generator Weekly Load Test
                          Radiation Monitor Operability. Test-
                          Gaseous Radwaste System Surveillance
                          Vital Area Door Alarm Test
                          Primary Coolant Chemistry Analysis
                          Alternate Cooling Method Diesel Generator Weekly Test
                    The NRC inspectors reviewed-the results of the 10-inch scram tests and
                    back-EMF tests on the control rod drives performed during the course of
                    the month.
                    The NRC inspectors also met with the licensee's technical staff 'to' review-
                    licensee use of a new computer code for doing-fuel analyses'and
                    accountability required by 10 CFR Part 74.13. The NRC inspectors
                    conferred with the NRR Project Manager. Based on the interviews with the
                    licensee and discussions'with the NXR Project Manager, the NRC inspectors
<
<
                    have no feether questions at this time' regarding use of this computer
'
                    code.
The NRC inspectors also reviewed the documentation and witnessed portions
                    No violations or deviations were identified in the review of this program
of the work of SSR 88500302 "Perform Quarterly Inspection." - This was.the
                    area.
flushing and quarterly maintenance on the "B"-Instrument Air Compressor.
      7.           Raalological Protection (71709)
The preventative maintenance was being performed according to.
                    The NRC inst. ' tors verified that required area surveys of exposure rates
Procedure MP-7055 (Q), Issue 1,'"Quarterly Inspection and Preventative
                    are made and posted at entrances to radiation areas and in other
Maintenance, Guardner-Denver Instrument: Air Compressor." The SSR~also
                    appropriate areas. The NRC inspectors observed health physics
incorpt.ated by Reference Procedure ME-iO51, . Issue 3, "Guardner-Denver Air
                    professi_onals on duty on all shifts, including the backshift. The NRC                                       l
Compressor, Coolant System, Chemical Cleaning Procedure Using Rydlyme."
                    inspectors observed the' health physics technicians checking area radiation                                   j
1
                                                                                                                                  .
No violations or deviations were identified in the review of this program
                                                                                                                                  l
area.
        , _ _ _ . .             _    - ._ , ,,_.._ ...   . . . _ _ . - _    . ~ , , ,     , . . . - _ , , _   . ,,     ,
6.
Monthly Surveillance Observction (61726}
Ouring the course of the inspection period,.the NRC inspectors monitored
the Technical Specification 1 surveillance logs'to assure that Technical
Speciff ation required surveillances were current.
Additionally, they
observed performance of parts of the following surveillances:
Emergency Diesel Generator Weekly Load Test
Radiation Monitor Operability. Test-
Gaseous Radwaste System Surveillance
Vital Area Door Alarm Test
Primary Coolant Chemistry Analysis
Alternate Cooling Method Diesel Generator Weekly Test
The NRC inspectors reviewed-the results of the 10-inch scram tests and
back-EMF tests on the control rod drives performed during the course of
the month.
The NRC inspectors also met with the licensee's technical staff 'to' review-
licensee use of a new computer code for doing-fuel analyses'and
accountability required by 10 CFR Part 74.13.
The NRC inspectors
conferred with the NRR Project Manager.
Based on the interviews with the
licensee and discussions'with the NXR Project Manager, the NRC inspectors
have no feether questions at this time' regarding use of this computer
code.
<
No violations or deviations were identified in the review of this program
area.
7.
Raalological Protection (71709)
The NRC inst. ' tors verified that required area surveys of exposure rates
are made and posted at entrances to radiation areas and in other
appropriate areas.
The NRC inspectors observed health physics
professi_onals on duty on all shifts, including the backshift.
The NRC
inspectors observed the' health physics technicians checking area radiation
j
.
, _ _ _ . .
- ._ , ,,_.._ ...
. . .
. -
.
~ , , ,
,
. . . - _ , , _
. ,,
,


                        .                     .                                                   . _ _ .                                   _ _           _.         - .   _   .   . . _ _ . _.   ..   _ __.
.
                                                      ,
.
                                                                                        ,".                                     -
. _ _ .
                                                /
_
                                                                                                                                                                  12
_
                                                                                                                              monitors, air samplers, and doing area surveys for> radioactive-
_.
                                                                                                                              contamination. The NRC-inspectors observed the health physics technicians
-
                                                                                                                              checking prin,ary coolant chemistry for total-oxidants.
.
                                                                                                                              No violations or deviations _were identified in the .eview'of this. program
_
                                                                                                                              area.
.
                                                                                        8.                                   Monthly Security Observation (71881)
. . _ _ .
                                                                                                                              The NRC inspectors verified that there was a lead security officer (I M
_.
                                                                                                                              on duty authorized by the facility-security plan to direct security.
..
                                                                                                                              activities onsite for each shift. The LSO did not have duties that would
_
                                                                                                                                interfere with the direction of security activities.
__.
                                                                                                                              The NRC inspectors verified, randomly and.on the backshift, that the
,".
                                                                                                                              minimum number of armed guards required by the facility's security plan         .;
-
                                                                                                                              were present. A 100 percent hands-on search was being utilized threughout
,
                                                                                                                              the inspection period as the licensee was unable to declare the new metal
/
                                                                                                                              detector. operable.
12
                                                                                                                              The protected area barrier was surveyed by the NRC inspectors. -The
monitors, air samplers, and doing area surveys for> radioactive-
                                                                                                                              barrier was properly maintained and was not compromised by erosion,
contamination.
                                                                                                                              openings in the fence fabric, or walls, or proximity of vehicles, crates
The NRC-inspectors observed the health physics technicians
                                                                                                                              or other objects that could be used to scale the barrier. The NRC
checking prin,ary coolant chemistry for total-oxidants.
                                                                                                                              inspectort observed the vital area barriers were well meintained and riot
No violations or deviations _were identified in the .eview'of this. program
                                                                                                                              compromised by obvious breaches or. weaknesses. The NRC inspectors-               '
area.
                                                                                                                              observed tnet persons granted access to the site are badged indicating
8.
                                                                                                                              whether they had unescorted or escorted access authorization.
Monthly Security Observation (71881)
                                                                                                                              The NRC inspectors obserled armed response force deployment when badged
The NRC inspectors verified that there was a lead security officer (I M
                                                                                                                              unescorted individuals attempted to enter. areas for which they did not
on duty authorized by the facility-security plan to direct security.
                                                                                                                              have access. No deliberate attempts to-violate access levels,were
activities onsite for each shift.
                                                                                                                              observed. Rather, newly badged individuals have recently shown a
The LSO did not have duties that would
                                                                                                                              propensity to confuse the central alarm station door with the reactor
interfere with the direction of security activities.
                                                                                                                              building entrance. The NRC inspectors observed that the security force             ,
The NRC inspectors verified, randomly and.on the backshift, that the
                                                                                                                              responded according to .the security plan.                                         ;
minimum number of armed guards required by the facility's security plan
                                                                                                                              No violations or deviations were identified in-the review of this program
.;
                                                                                                                              aiea.
were present.
                                                                                                                                                                                                                  ;
A 100 percent hands-on search was being utilized threughout
                                                                                        9.                                     Exit Interview (30703)
the inspection period as the licensee was unable to declare the new metal
                                                                                                                              An exit meeting was conducted on June 9, 1988, attended by those
detector. operable.
The protected area barrier was surveyed by the NRC inspectors. -The
barrier was properly maintained and was not compromised by erosion,
openings in the fence fabric, or walls, or proximity of vehicles, crates
or other objects that could be used to scale the barrier.
The NRC
inspectort observed the vital area barriers were well meintained and riot
compromised by obvious breaches or. weaknesses.
The NRC inspectors-
observed tnet persons granted access to the site are badged indicating
'
whether they had unescorted or escorted access authorization.
The NRC inspectors obserled armed response force deployment when badged
unescorted individuals attempted to enter. areas for which they did not
have access.
No deliberate attempts to-violate access levels,were
observed.
Rather, newly badged individuals have recently shown a
propensity to confuse the central alarm station door with the reactor
building entrance.
The NRC inspectors observed that the security force
responded according to .the security plan.
,
;
No violations or deviations were identified in-the review of this program
aiea.
;
9.
Exit Interview (30703)
An exit meeting was conducted on June 9, 1988, attended by those
4
4
                                                                                                                              identified in paragraph 1. At this time the NRC inspectors reviewed the
identified in paragraph 1.
                                                                                                                              scope and findings of the' inspection.
At this time the NRC inspectors reviewed the
                                                                                                                                                                                                                  :
scope and findings of the' inspection.
                                                                                                                                                                                                                  i
:
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!
                                                                                                                            -
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Latest revision as of 08:00, 11 December 2024

Insp Rept 50-267/88-12 on 880501-31.Deviation Noted.Major Areas Inspected:Operational Safety Verification,Ler Review, Monthly Maint Observation,Monthly Surveillance Observation, Radiological Protection & Monthly Security Observation
ML20150C257
Person / Time
Site: Fort Saint Vrain Xcel Energy icon.png
Issue date: 06/21/1988
From: Farrell R, Heitner K, Michaud P, Westerman T
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
Shared Package
ML20150C219 List:
References
50-267-88-12, NUDOCS 8807120380
Download: ML20150C257 (12)


See also: IR 05000267/1988012

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APPENDIX B

U. S. NUCLEAR REGULATORY COMt!!SSION

REGION IV

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NRC Inspection Report:

50-267/88-12

License: DPR-34

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Docket:

50-267

Licensee: Public Service Company of Colorado ~ (PSC)

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Facility Name:

Fort St. Vrain Nuclear Generating StationE

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Inspection At:

Fort St. Vrain (FSV) Nuclear Generating Station, Platteville,

-Colorado

Inspection Conducted: May 1-3 , 1988

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Inspectors:

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-R. E. Farrell Senior Resident Inspector (SRI)

Date

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P. W. McliTu'd, ResTden

nTpector (RI)

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K. L. Heitner, NRR Project Manager

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Approved:

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6 -7/-W

T. F. Westerman, Chief

.Date

Reactor Projects Section B

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8807120380 000706

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Inspection Summary

Inspection Conducted May 1-31, 1988 (Report 50-267/88-12)

Areas Inspected:

Routine, unannounced inspection of operational safety

verification, licensee event report review, monthly maintenance observation,

monthly surveillance observation, radiological protection, and monthly security

observation.

Results: Within the six areas-inspected, no violations were identified.

One deviation was identified in paragraph 3.

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DETAILS-

1.

Persons Contacted

PSC

D. Alps, Supervisor, Security

  • M. Block, Systems Engineering Manager
  • F. Borst, Nuclear Training Manager
  • L. Srey, Manager, Nuclear Licensing and Resources
  • M. Cappello, Central Planning and Scheduling Manager
  • R. Craun, Nuclear Engineering Manager

D. Evans, Superintendent, Operations

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  • M. Ferris, QA Operations Manager

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  • C. Fuller, Manager, Nuclear Production-

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  • J. Gramling, Supervisor, Nuclear Licensing Operations

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  • M. Holmes, Nuclear Licensing Manager
  • F. Novachek, Nuclear Support Manager'

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  • R. Sargent, Assistant to Vice President', Nuclear Operations

>

  • L. Scott, QA Services Manager
  • N. Snyder, Maintenance Department Manager
  • P. Tomlinson, Manager, QA

R. Walker, Chairman of the Board and CEO

  • D. Warembourg, Manager, Nuclear Engineering
  • R. Williams Jr. , Vice President, Nuclear Operations

W. Woodard, Health Physicist

The NRC inspectors also contacted other licensee and contractor personnel

during the inspection.

~

  • Denotes those attending the exit interview conducted June 9,1988.

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2.

Plant Status

The reactor was operating at 80 percent power level at the close of the

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inspection period.

The reactor was critical 31 percent of the inspection

!

period with turbine generator capacity factor of 13.8 percent for the

inspection period.

The reactor scrammed-on May 6,1988, following a

helium circulator trip caused by a control systems malfunction.

The

reactor was again taken critical on May 18.

The turbine generator was

returned to service May 26.

The reactor was run below turbine generator

service levels from May 18-26, 1988, for reactor coolant cleanup.

i

During the inspection period the licensee implemented a.reorganizution of

its nuclear operations.

This ha, been a much talked about reorganization,

which has been in the planning stage for almost 2 years. The NRC

inspectors will closely monitor licensee's activities as the reorganization

takes effect.

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3.

. Operational Safety Verification (71707)

The NRC inspectors reviewed' licensee activities to ascertain that the

facility is being operated safely and in conformance with regulatory

requirements and that the licensee's management control system is

effectively discharging its responsibilities for continued safe operation.

The NRC inspectors toured the control room on a daily basis during' normal

working hours and at least twice weekly during backshift hours. -The

reactor operator and shif t supervisor logs and Technical Specification

compliance logs were reviewed daily.

The'NRC inspectors observed proper

control room staffing at all times and verified operators were attentive

and adhered to approved procedures.

Control room instrumentation was -

observed by the NRC inspectors and the operability of the plant protective

system and nuclear instrumentation system were verified by the NRC

inspectors on each control room tour.

Operator awareness.and

understanding of abnormal or alarm conditions was verified.

The NRC

inspectors reviewed the operations order book, operations deviation

report (0DR) log, clearance log, and temporary configuration report-(TCR)

log to note any out-of-scrvice safety-related systems and to verify

compliance with Technical Specification requirements.

The licensee's management representatives were observed in the control

room on a daily basis prior to the beginning of the day shift.

The NRC inspectors verified the operability of a safety-related system on

j

a weekly basis.

The reserve shutdown system, helium purification system,

prestressed concrete reactor vessel (PCRV) penetration purge flow, and

control rod drive motors and purge flows were verified operable by the NRC

inspectors during this report period.-

During plant tours, particular

attention was paid to components of these systems to verify valve

positions, p wer supplies, and instrumentation were correct for current

plant conditions.

Shift turnovers were observed at least weekly.by the NRC inspectors.

The-

information flow appeared to'be good, with the shift supervisors routinely

soliciting comments or concerns from reactor operators, equipment

operators, and auxiliary tenders.

The NRC inspectors responded to the control room following a reactor scram

on May 6, 1988.

The scram occurred after "B" helium circulator tripped

due to an upset in the Loop 1 bearing water surge tank.

Approximately

2 minutes later a reactor scram on high hot reheat steam temperature

occurred.

This was due to a failure of the cold reheat steam

attemperation flow to automatically increase following the circulator

trip. .Following the trip it was discovered that the hot reheat

temperature signal supplied to the overall plant control. system had

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drifted such t N t it was reading 35 F below actual hot reheat steam

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temperature.

The plant protective system, which was verified to have been

reading actual hot reheat steam temperature, thus saw the actual hot

reheat steam temperature reach the scram setpoint before the control

system detected anything abnormal.

Because of recent problems with radioactive releases via the core support

floor vent following a plant trip, the reactor _ operators were attempting

to reduce primary coolant pressure as fast as reasonably possible

following the trip.

The rate at which the primary coolant was being

vented exceeded the capacity of the low temperature absorber in the helium

purification system.

This caused the low temperature absorber.to heat up

and off gas into the coolant which was being vented into the helium

storage bottles.

The off gassing of radioactive noble gases resulted in

radiation 1. ab a high as 125 mr/hr in the helium storage bottle area,

which was quickly posted as a high radiation area.

The NRC inspectors

verified the dose rate at the posted boundaries was within the

requirements of 10 CFR 20.202.

The situation was quickly recognized and

the rate of primary coolant depressurization was reduced.

It was

subsequently determined that the corrective actions taken to address the

problem with the core support floor vent were successful in precluding the

need to rapidly depressurize the PCRV.

During the PCRV depressurization, the operating purified helium compressor

tripped.

This resulted in a loss of buffer helium wakeup which, in turn,

resulted in a small amount of primary coolant flowing down the shaft of

"C" and "D" helium circulators.

This primary coolant then mixed with

bearing water and ended up in the reactor building.

It was subsequently

released to the atmosphere via the plant vent stack.

The reactor building

atmosphere was measured at 3.6 E-8 microcuries per CC, and the accumulated

dose at the site boundary was calculated to be 1.94 E-7 Rems.

The NRC inspectors were in the control room immediately following the

reactor scram and remained there until the plant was stabilized.

The

licensee's operations personnel were observed to be in control of the

plant at all times and responded to the event in a professiunal manner.

The licensee in a power ascension on May 26, 1988, experienced difficulty

in stroking valves HV-2292 and HV-2293.

These valves are hydraulically

operated valves which direct main steam flow from the startup bype s

system to the main steam bypass system in preparation for startint iie

turbine generator.

These two valves must stroke closed during powa

ascension after the main steam temperature reaches 760 F.

The hydraulic

actuator on each of these valves is equipped with thermal relief valves to

protect the actuator against hydraulic pressure surges.

It was a thermal

relief valve on HV-2292 failing to reset which initially led to the fire

experienced October 2, 1987.

The problem experienced during this inspection period with HV-2292 and

HV-2293 was with the thermal relief valves associated with the hydraulic

actuators.

A relief valve on HV-2292 was leaking slowly and was

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subsequently replaced.

This is normal after very few strokes of the

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relief valve.

The relief valve on HV-2293' failed to reseat af ter HV-2293

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was stroked closed.

The oil flow relieving through the thermal relief

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valve was stopped by reopening HV-2293.. The thermal relief valve was

replaced, and HV-2293 was again closed.

Again the themal relief valve

lifted, failed to reseat, and re.lieved oil to the oil recovery system.

Again the oil flow was stoped by opening HV-2293.

The licensee noted

that the oil flow through tie thermal relief salve on the actuator of

HV-2293 was greater than expacted.

There is a flow orifice 27 mils in

diameter installed upstream of these thermal relief valves to restrict

this oii flow.

Additionally, restricting this-oil. flow serves to protect

the relief valves and prolong service life of the relief valves.

In-

October 1987, it was' discovered that the orifice upstream of the thermal

rolief valve on HV-2292, which led to the fire, was not installed and

consequently the oil flow experienced was greater than could be handled by

the oil recovery system.

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While NRC inspectors watched, the thermal relief valve and associated

piping was disassembled on HV-2293.

The flow orifice upstream of the

relief valve was missing.

The licensee recovered the documentation of the

disassembly, inspection, and reassembly of HV-2293 following the

October 1987 fire and verified that mechanics had installed the flow

orifice and that quality control inspectors had witnessed the

installation.

Additionally, the parties involved who had actually

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performed the work and inspection in 1987 were interviewed by the licensee

,

and insisted that they had indeed performed this work as documented.

The

licensee stated to the NRC inspectors that the men involved were

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considered to be particularly reliable.

The mechanics probed the

connecting piping of the hydraulic actuator and did find the flow orifice.

This flow orifice is a screw which screws into a fitting and has a 27 mil

diameter hole drilled in it.

Apparently this screw had vibrated out of

its fitting and fallen into a portion of the actuator piping where it

could not perform its function.

The licensee reinstalled the orifica and reassembled the actuator on

1

HV-2293.

HV-2292 and HV-2293 were successfully stroked closed and power

3

ascension continued.

The licensee is preparing to disassemble and inspect

i

all hydraulic actuators with this type of orifice and will take corrective

steps to assure that the orifices are installed in a manner which

precludes vibrating out of position.

The NRC inspectors will follow this

a: tion and this is considered an open item (267/8812-01).

3

.;

By letter dated July 10, 1985, the licensee committed to follow certain

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Interim Technical Specifications concerning reactivity control at FSV.

Interim LCO 3.1.1.C states for a control rod drive (CRD) to be considered

operable, there must be helium purge flow to each CRD penetration when

reactor pressure is above 100 psia.

Interim SR 4.1.1.A.2 requires that

purified helium flow to each CRD be verified by verifying flow at each

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subheader.

The purpose of these requirements is to limit the upward flow

of contaminated helium coolant to the CRD mechanism in the CRD

penetrations.

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On May 18, 1988, at about 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br /> and on May 19, 1988, at about-

0815 hours0.00943 days <br />0.226 hours <br />0.00135 weeks <br />3.101075e-4 months <br />, the inspcctor observed helium flow at the subheaders

(FI-11268-3, 4, and 7) was reading zero or below iero.

At the same time,

flow indication for some individual CRD penetrations read zero or below

zero.

(These flow indicat$ons were read both locally in the reactor

building and remotely in the control room.).

At this time the reactor pressure was above 100 psig (172 psig on May 19

at 0815 hours0.00943 days <br />0.226 hours <br />0.00135 weeks <br />3.101075e-4 months <br />). _ The inspector observed that the licensee's-

instrumentation did not indicate compliance with LC0 3.1.1.C.

.The

licensee stated that the instrumentation might_not read correctly because

of reduced reactor-coolant density (approximately 39 percent of full

value).

The NRC inspectors requested the licensee provide the surveillance

procedure to satisfy the requirements of Interim SR 4.1.1.A.2 and

compliance with Interim LC0 3.1.1.C.

The licensee provided pages from the

reactor building equipment operator round sheet.

This sheet required only

that the subheader flow be greater than zero in order to satisfy the

LC0 3.1.1.C.

The NRC inspector noted that this criteria for surveillance of subheader

purge flow does not reflect the reactor's design criteria.

Specifically,

the licensee's Reference Design Manual, 50-11-6, notes the helium purge

flow is to be 5.5 lbs/hr per penetration (at full helium density).

The

greater than zero criteria would also allow instrumentation error to

falsely indicate that there is adequate flow.

The NRC inspectors concluded that the licensee's current surveillance

procedure is inadequate.

In subsequent discussions with the inspector, the licensee stated that by

reducing all indications to a common basis, approximately 2.5 to

2.8 ACFM of flow was indicated at 170 psia for the total system.

By

contrast, the control system was set to deliver 7.4 ACFM.

Thus, the

system was not operating correctly when observed by the NRC inspector.

The

licensee was informed of the NRC inspector's' observation of the apparent

malfunction of the control 'systet.s for helium purge.

It is not apparent that the licensee has implemented measures to assure-

compliance with his July 10, 1985 commitment to follow Interim Technical

Specification LC0 3.1.1.C.

ThisIsanapparentdeviation(267/8812-02).

On a tour of the control room, the NRC inspectors found a television set

and a connected video tape machine in the kitchen behind the:

atrol

boards within 'he control room vital area.

The equipment wa3 not in use

at the time. but the NRC inspectors immediatelv interviewed the licensee's

operations suW rin,endent as to why this equipment was in the control

room.

The operati(ns superintendent explained that people on shift could

not attend regular 1y scheduled safety meetings.

Consequently, the

licensee was videc taping the safety meetings and allowing the operating

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crew to watch the video :

of the meeting >when.they could.

This

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activity was taking place

at kitchan.behind the control boards ir, the-

control room vital area.

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MC 'nspcctors inquired as to why-this

activity had to take place in

ontrol room since the control roon,

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operators could not perform ti

technical specification required

licented activities in front

une control boards and also watch tne

video tape simultaneously.

The operations superintendent agreed and the

- equipment was removed from .,he control roo'm vital area to an office area

nearby where on shift personnel, who are not renuired to be. in tha

control room at their stations, can watch the video tapes of-the safety

meetings during their shifts.

The licensee advised the NRC inspectors

that persons required by Technical Specifications.to be at their stations

within the control room will, in the future, watch the video tape of the

safety meetings after being relieved from their pest.

There-has been r.o time when the NRC inspectors have observed less than

minimum Technical Spec:rication required manning ~in front of the control

panels in the control room.

At no time ilave the NRC inspectors observed

on-duty licensed reactor operators watching television or participating in

other activities-that would divert their attention from their duties.

During tours of the facility, the NRC inspectors noted that the average

age of deficiency report tags (DRTs) appears to be growing.

The DRT

system developed by the licensee identifies equipment already logged as

requiring maintenance and also allows observers to trace the maini,enance

requests pending to repair the equipment.

However, the NRC inspectors

noted that the requests once gene.'ated do not appear to be closed in a

timely manner. Observed examples are as follows.

DRT 004061 on valve V-6223 is dated Septemt,er 3,1986.

DRT 004062 on valve V-6222 is dated September 3,1986.

ORT 010055 on valve V-91141 is dated January 26, 1988.

This is a

hydraulic system valve and the LRFdocuments a missing hand wheel.

The h6nd wheel was still: missing on May 6, 1988.

The NRC inspector

noted that a: missing hand wheel on a: hydraulic system valve aggravated

the fire experienced October 2, 1987.

The valve part is on back

01 der.

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DRT 004450 on M-82, a broken box protecting instrument valves, is

dated January 25, 1987.

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DRT 005054 on valve HV-2189-8 dated August 5, 1987.

The licensee has been informed of the NRC inspector's observation of the

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excessive time required to close DRTs.

The licensee is cornidering actions

to address this issue.

This item is considered an open itoa (267/8812-03).

On a tour of the 480 V switchgear room, the NRC inspectors noted that some

electrical cable conduits were quite warm to.the touch.

The licensee's

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shift supervisor, maintenance manager, and electrical maintenance

supervisor were interviewed regarding these conduits.

This condition had

previously been identified by' licensee _ personnel.

The licensee'.s .

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engineering organization has.determinedithat-the cable in these. conduits

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is qualified'to.a' higher temperature than canibe tolerated by' human touch.

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Consequently, the cables were within their qualified parameters.

The

licensee also advised that' the particular conduits carried power. cables :to

a bearing water pump motor.

This'is.a large 480 V motor and the conduit

temperature'is expected to be warm when the motor is running.

No violations or deviations ware identified in the review of this program

area.

4.

Review of Licensee Event Reports (LERs) (90712)

The NRC inspectors reviewed the LERs listed below during this inspection

period.

This review verified that each.LER was submitted within-the

required time, the description of the occurrence is accurate, a root cause

was established where possible, and the corrective actions taken or

proposed are appropriate.

The five LERs reviewed were found to be

acceptable in these areas. The LERs are:

LER 88-07, Surveillance Procedure not_ Performed Mithin Technical

Specification Interval Due to Error in Computer Scheduling Program

LER 88-06, Expansion Joint Failure Causing Losa of Circulating Water

Resulting in a Manual Scram

LER 88-05, Neutron Flux Rate of Change High Scram (while shut down)

LER 88-04, Manual Scram Due to Power' Grid Fluctuecions

LER 87-23, Revision 1, HV-2292 Oil Leak Caused Fire and Manual Scram

Mo violations or deviations were identified in the review of this program

area.

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5.

Monthly Maintenance Observation (62703)

The NRC inspectors monitored the licensee's efforts to troubleshoot tL

prestressed concrete reactor vessel (PCRV) penetration interspace purge

flow indication, FI-11263, located in the control room.

This instrument

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is used to verify compliance with Technical Specification 4.2.7, which

requires the interspace between primary and secondary PCRV penetration

seals to be pressurized.

A purge flow of purified helium maintains this

pressurization.

ORT 9282 identified a problem with flow indication FI-11263 cycling

between 0 and 3 ACFM.

The flow element was removed and cleaned, which

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returr.ed the instrument to its normal indication of cycling-between l'and

2 ACFM.

The licensee's system engineer then performed a test of an

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electrical-dampening circuit which took a 2-minute average of.the

normally cycling signal and gave a time averaged,-steady indication. -.This

test was performed under. test procedure:T-362, which the NRC inspectors

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reviewed and'found acceptable.

The purpose of this test was.to prove;the

feasibility of modifying the instrument .to provide a mcre steady, but -

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still meaningful, indication. . Based on the. licensee's evaluation of the

test data, a permanent change notice is being developed-to modify the

circuitry for this instrument.

The NRC inspectors will monitor the

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licensee's progress in this area.

The NRC resident inspector followed the licensee's actions to check the

operation of the Loop 1 bearing water s Jrge tank level control system

following the plant trip on May 6, 1988. .A level excursion in the Loop 1

bearing water surge tank was the cause of the loss.of "B" helium

circulator, which was followed by a reactor scram.

Troubleshooting

efforts discovered the Hi-Hi level dump valve on the surge tank was

opening at an approximately 18 inch leQ.

The surge tank-. level is.

normally controlled at 17 inches with the Hi Hi level dump valve set at

23 inches.

The licensee was not able to establish a reason for the Hi-Hi

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level dump valve setpoint being as found.

The fact that it was operating

at that point does explain how a level excursion could have occurred under

normai operations.

The NRC inspectors verified both the Loop 1 and Loop 2

bearing water surge tank level controls were calibrated prior to returning

to power operation.

During power ascension, the fluid in the main steam lines at FSV goes from

water to wet steam to superheated steam depending upon the'. power level at

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the time.

Consequently, the safety relief valves in the main steam lines

are designed to handle water, wet steam, or superh_eated steam. '

The

particular design of these safety relief valves causes them to perform

best and co be most leak tight when exposed to superheated steam.

The

manufacturer does recommend gagging leaking valves when the working

fluid is water or we' Jte6m.

There are three safetyfrelief valves on each

main steam line and t w wer operated relief valve on each main steam line.

Each of the safety relief valves'(SRV) will pass approximately 34 percent.

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of the full flow of its associated main steam line,

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On May 25, 1988, the NRC inspectors noted that SRV V-2214 was gagged in

main steam Loop 1 and SRV V-2245 was gagged in main steam Loop 2.

The NRC

inspectors interviewed the maintenance supervisor responsible-for gagging

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the valves and reviewed station service requests (SSRs) 88503122, which

authorized gagging V-2245, and SSR 88503082, which authorized gagging.

V-2214.

The NRC inspectors noted that in both cases quality control had

inspected the installation of the gags on the safety relief valves and that

SSRs for gagging safety relief valves stay open until the gag is again-

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removed.

The controlled work instructions (part of the SSR) stated iri a

note to Step 8, "Gag must be removed before going above 30 percent." The.

NRC inspectors verified by personnel interview, documentation review, and

visual inspection that the-gags were removed from the safety relief valves-

when the facility went above 30 percent power.

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The NRC inspectors also reviewed the documentation and witnessed portions

of the work of SSR 88500302 "Perform Quarterly Inspection." - This was.the

flushing and quarterly maintenance on the "B"-Instrument Air Compressor.

The preventative maintenance was being performed according to.

Procedure MP-7055 (Q), Issue 1,'"Quarterly Inspection and Preventative

Maintenance, Guardner-Denver Instrument: Air Compressor." The SSR~also

incorpt.ated by Reference Procedure ME-iO51, . Issue 3, "Guardner-Denver Air

Compressor, Coolant System, Chemical Cleaning Procedure Using Rydlyme."

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No violations or deviations were identified in the review of this program

area.

6.

Monthly Surveillance Observction (61726}

Ouring the course of the inspection period,.the NRC inspectors monitored

the Technical Specification 1 surveillance logs'to assure that Technical

Speciff ation required surveillances were current.

Additionally, they

observed performance of parts of the following surveillances:

Emergency Diesel Generator Weekly Load Test

Radiation Monitor Operability. Test-

Gaseous Radwaste System Surveillance

Vital Area Door Alarm Test

Primary Coolant Chemistry Analysis

Alternate Cooling Method Diesel Generator Weekly Test

The NRC inspectors reviewed-the results of the 10-inch scram tests and

back-EMF tests on the control rod drives performed during the course of

the month.

The NRC inspectors also met with the licensee's technical staff 'to' review-

licensee use of a new computer code for doing-fuel analyses'and

accountability required by 10 CFR Part 74.13.

The NRC inspectors

conferred with the NRR Project Manager.

Based on the interviews with the

licensee and discussions'with the NXR Project Manager, the NRC inspectors

have no feether questions at this time' regarding use of this computer

code.

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No violations or deviations were identified in the review of this program

area.

7.

Raalological Protection (71709)

The NRC inst. ' tors verified that required area surveys of exposure rates

are made and posted at entrances to radiation areas and in other

appropriate areas.

The NRC inspectors observed health physics

professi_onals on duty on all shifts, including the backshift.

The NRC

inspectors observed the' health physics technicians checking area radiation

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monitors, air samplers, and doing area surveys for> radioactive-

contamination.

The NRC-inspectors observed the health physics technicians

checking prin,ary coolant chemistry for total-oxidants.

No violations or deviations _were identified in the .eview'of this. program

area.

8.

Monthly Security Observation (71881)

The NRC inspectors verified that there was a lead security officer (I M

on duty authorized by the facility-security plan to direct security.

activities onsite for each shift.

The LSO did not have duties that would

interfere with the direction of security activities.

The NRC inspectors verified, randomly and.on the backshift, that the

minimum number of armed guards required by the facility's security plan

.;

were present.

A 100 percent hands-on search was being utilized threughout

the inspection period as the licensee was unable to declare the new metal

detector. operable.

The protected area barrier was surveyed by the NRC inspectors. -The

barrier was properly maintained and was not compromised by erosion,

openings in the fence fabric, or walls, or proximity of vehicles, crates

or other objects that could be used to scale the barrier.

The NRC

inspectort observed the vital area barriers were well meintained and riot

compromised by obvious breaches or. weaknesses.

The NRC inspectors-

observed tnet persons granted access to the site are badged indicating

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whether they had unescorted or escorted access authorization.

The NRC inspectors obserled armed response force deployment when badged

unescorted individuals attempted to enter. areas for which they did not

have access.

No deliberate attempts to-violate access levels,were

observed.

Rather, newly badged individuals have recently shown a

propensity to confuse the central alarm station door with the reactor

building entrance.

The NRC inspectors observed that the security force

responded according to .the security plan.

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No violations or deviations were identified in-the review of this program

aiea.

9.

Exit Interview (30703)

An exit meeting was conducted on June 9, 1988, attended by those

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identified in paragraph 1.

At this time the NRC inspectors reviewed the

scope and findings of the' inspection.

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