Lindy Hughes Fleet Fire Protection Program Engineer Southern Nuclear Operating Company June 4, 2013 Fire Protection
Dec 18, 2015
Lindy HughesFleet Fire Protection Program EngineerSouthern Nuclear Operating Company
June 4, 2013
Fire Protection
Fire Protection Under Deterministic ProgramReg Guide 1.189 was developed to provide
a comprehensive fire protection guidance document and to identify the scope and depth of fire protection that the NRC would consider acceptable for nuclear power plants
Fire Protection Configuration ManagementQualified personnel review new designs
and plant modifications, including fire protection systems, must be reviewed to ensure inclusion of appropriate fire protection requirements
Fire Protection Configuration ManagementInstructions and procedures for design,
installation, inspection, test, maintenance, modification, and administrative controls must be reviewed to ensure proper FP requirements are addressed, including– Control of ignition sources and combustibles– Provisions for backup fire protection
capability– Disablement of FP system– Restrictions on material substitutions
Fire Protection Configuration Management Under NFPA 805NEI 04-02 provides guidance for
implementing the requirements of NFPA 805
Fire Protection Configuration Management Under NFPA 805Plant Change Evaluation
Shall be performed to ensure that a change to a previously approved fire protection program element is acceptable
Process shall consist of an integrated assessment of the acceptability of risk, defense-in-depth, and safety margins
Impact of proposed change shall be monitored
Risk AcceptanceChange in public health risk from any plant
change shall be acceptable to AHJCDF and LERF shall be used to determine
acceptability
Defense in DepthPlant change evaluation shall ensure
philosophy of defense-in-depth is maintained, relative to fire protection and nuclear safety
Defense in Depth for Fire ProtectionPrevent fires from startingRapidly detect, control, and extinguish fires
that do occurProvide protection for structures, systems,
and components important to safety so that a fire that is not promptly extinguished will not prevent the safe shutdown of the plant
Defense in Depth for Nuclear SafetyPrevent core damagePrevent containment failureMitigate consequences
Fire Protection Configuration Management Under NFPA 805The fire prevention activities shall include
but not be limited to the following program elements:
(3) Administrative controls addressing the review of plant modifications and maintenance to ensure that both fire hazards and the impact on plant fire protection systems and features are minimized
Fire Protection Configuration Management Under NFPA 805Monitoring Program
Ensures availability and reliability of FP systems and features are maintained
Assesses performance of FP program in meeting performance criteria
Ensures assumptions in engineering analysis remain valid
Fire PRAFire PRAs do not always use traditional fire
area boundaries when developing Physical Analysis Units (PAUs)Non fire rated boundaries can be credited
Modified or new equipment / components can introduce new ignition sources or hazards