Credit for control rods without scram capability in the calculation of the shutdown margin.

Potential loss of safe shutdown equipment due to premature silicon controlled rectifier failure.
Published: (1988)

Potential for loss of remote shutdown capability during a control room fire.
Published: (1992)

Failure of remote shutdown system instrumentation because of incorrectly installed components.
Published: (1991)

Potential loss of required shutdown margin during refueling operations.
Published: (1989)

Failure to ensure that post-fire shutdown procedures can be performed.
Published: (2010)

Careful planning significantly reduces the potential adverse impacts of loss of offsite power events during shutdown.
Published: (1991)

Inadequate control of reactor coolant system conditions during shutdown.
Published: (1993)

Degradation of shutdown cooling system performance.
Published: (1993)

Loss of shutdown cooling during disassembly of high pressure safety injection system check valve.
Published: (1991)

Recent events involving reactor coolant system inventory control during shutdown.
Published: (1997)

Unplanned return to criticality during reactor shutdown.
Published: (1992)

Leaking shutdown cooling isolation valves at Cooper Nuclear Station.
Published: (1994)

Risk impact study regarding maintenance during low-power operation and shutdown.
Published: (1995)

Shutdown order issued because licensed operators asleep while on duty.
Published: (1987)

Observations from recent shutdown risk and outage management pilot team inspections.
Published: (1993)

Failure of elastomer seated butterfly valves used only during cold shutdowns.
Published: (1984)

Partial bypass of shutdown cooling flow from the reactor vessel.
Published: (1996)

Scram discharge volume.
Published: (1980)

Inaccurate reactor water level indication and inadvertent draindown during shutdown.
Published: (1996)

Improper electrical grounding results in simultaneous fires in the control room and safe-shutdown equipment room.
Published: (1997)

Scram discharge volume designs.
Published: (1980)

Unrecognized reactivity addition during plant shutdown.
Published: (1997)

Level instrumentation inaccuracies observed during normal plant depressurization.
Published: (1993)

Potential for loss of shutdown cooling while at low reactor coolant levels.
Published: (1990)

Lessons learned from NRC inspections of fire protection SafeShutdown systems (10 CFR 50, Appendix R).
Published: (1984)

Recent operating experience on loss of reactor coolant inventory while In a shutdown condition.
Published: (1990)

Turbine overspeed and reactor cooldown during shutdown evaluation.
Published: (1994)

Thermal sleeve flange wear leads to stuck control rod at foreign nuclear plant.
Published: (2018)

Undetected accumulation of gas in reactor coolant system and inaccurate reactor water level indication during shutdown.
Published: (1996)

Inadvertent reduction in primary coolant inventory in boiling water reactors during shutdown and startup.
Published: (1984)

Outage planning and scheduling--impacts on risk.
Published: (2005)

Regulatory requirements when no operations are being performed.
Published: (1994)

Safe shutdown potentially challenged by unanalyzed internal flooding events and inadequate design.
Published: (2005)

Degradation of residual heat removal (RHR) system.
Published: (1981)

Framework for low power/shutdown fire PRA : final report /
by: Nowlen, S. P., et al.
Published: (2013)

Methodology for low power/shutdown fire PRA : draft report for comment /
by: Nowlen, S. P.