02/13/2008
Hope Creek Integrated Inspection – Edited lowlights – 8 Green findings:
(bold
emphasis from Norm)
(1)
Green.
A self-revealing non-cited violation of Technical Specification 6.8.1,
"Procedures and Programs," was identified when control
room operators inadvertently drained water from the reactor pressure vessel (RPV)
during safety relief valve solenoid testing. PSEG determined that the work order
and procedure used for the test did not establish the plant conditions necessary
to test ADS SRV logic without causing an inadvertent opening of an SRV.
The finding was
greater than minor because it was associated with the procedure quality
attribute of the Initiating Events cornerstone and impacted the cornerstone
objective to limit the likelihood of those events that upset plant stability and
challenge critical safety functions during shutdown as well as power operations.
Specifically,
the inadequate procedure resulted in an unexpected loss of RPV water inventory
of approximately 2100 gallons. Using IMC 0609 Appendix G for shutdown
operations, the
inspectors determined that the finding was of very low safety significance
(Green). The
finding had a cross-cutting
aspect in the area of human performance,
resources, because the controlling work order and surveillance test procedure
were inadequate.
Specifically, these documents did not establish appropriate plant conditions for
testing a valve capable of rapidly draining RPV inventory. H.2(c) (Section
1R20.3)
(2)
Green.
A self-revealing finding was identified when
PSEG did not provide adequate work instructions for complex
troubleshooting activities associated with the digital feedwater control system
(DFCS) that subsequently
caused a reactor level transient during plant startup. Specifically,
inadequate troubleshooting
instructions resulted in an unanticipated overfeeding condition requiring prompt
operator action to prevent a high reactor water level trip
of the feed pumps and a subsequent reactor scram. The
finding had a cross-cutting aspect in the area of human performance,
resources, because PSEG did not provide complete, accurate and up-to-date
procedures and work packages. Specifically, PSEG did not develop adequate
troubleshooting instructions in accordance with their troubleshooting procedure
to limit plant impact. H.2(c) (Section 1R19)
(3)
Green.
A self-revealing non-cited violation of Technical Specification 6.8.1,
“Procedures and Processes,” was identified when PSEG did not include special
instructions in three related work clearance documents. As a
result, PSEG inadvertently drained reactor vessel water inventory through
reactor core isolation cooling (RCIC) steam line drains
to the primary containment. The
finding had a cross-cutting aspect in the area of human performance,
work practices, because workers did not adequately follow the safety tagging
operations procedure in the development of a main steam line plug clearance.
H.4(b) (Section 1R20.2)
(4) PSEG did not promptly identify
and correct an 89% through wall circumferential flaw in a dissimilar metal weld
in reactor recirculation system nozzle N2A. This
nozzle is directly connected to the reactor vessel. had a
cross-cutting aspect in the area of problem identification and resolution,
corrective action program, because PSEG did not take appropriate corrective
actions to address safety issues in a timely manner commensurate with their
safety significance. Specifically, PSEG did not implement corrective actions
specified by its corrective action program and deferred
recirculation nozzle inspections originally scheduled for April 2006 to October
2007 without adequate technical justification. P.1(d) (Section
1R08)
(5)
PSEG disassembled a water-tight door in the reactor building without assessing
the resulting increase in risk to safety-related systems due to internal
flooding. The
finding was greater than minor because PSEG's risk assessment did not consider
the uncompensated removal of plant internal flood barriers. The
finding had a cross-cutting
aspect in the area of human performance, work
control, because PSEG did not plan work activities on door 4302 using risk
insights associated with internal flooding and they did not identify the need
for planned contingencies or compensatory actions.
(6) when a pipe
support was found disconnected from safety relief valve (SRV) piping during a
drywell inspection. PSEG determined that the pipe support was likely
disassembled during a previous refueling outage but not
reassembled following the deferral of the remaining work
to the next refueling outage. The finding had a cross-cutting
aspect in the area of human performance,
work control, because PSEG inadequately managed the impact of changes to work
scope on the plan
(7) PSEG did not adequately
perform required radiological surveys in a High Radiation Area (HRA)
prior to down-posting to a Radiation Area. Three workers' electronic dosimeters
unexpectedly alarmed while in the main steam pipe chase while a reactor shutdown
was in progress. PSEG's investigation determined that dose rates in excess of
100 millirem per hour were present at the work location and the room should not
have been down-posted from a HRA. The
finding had a cross-cutting aspect in the area of human performance,
resources, because PSEG did not provide adequate resources in the form of plant
equipment. Specifically, time
delays caused by inadequate equipment provided to workers were the most
significant contributors to the increased radiation dose received by plant
workers. H.2(d) (Section 2OS2)
(8) power
for the Hope Creek Technical
Support Center (TSC) was inadvertently removed without compensatory actions for
approximately three days.
The
finding had a cross-cutting aspect in the area of human performance,
resources, because PSEG did not ensure that emergency facilities were available
and adequate to assure nuclear safety.