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Significance:
Jun 30, 2008
Identified By: NRC
Item Type: NCV NonCited Violation
Gland Seal Steam Header Isolation Valves Not Scoped In Maintenance Rule
The inspectors identified a Green, non-cited violation of 10 CFR 50.65(b)(2)(i) for the licensee’s failure to include the gland seal steam supply and supply bypass isolation valves in the scope of their maintenance rule program. These valves are used in the emergency operating procedures to mitigate a steam generator tube rupture if a main steam isolation valve were to fail. The licensee entered the issue into their corrective action program.
The finding was more than minor because it was associated with the mitigating systems cornerstone attribute of equipment performance and affected the cornerstone objective of ensuring the availability and reliability of systems that respond to initiating events to prevent undesirable consequences. In accordance with Inspection Manual Chapter IMC 0609.04, Phase 1 - Initial Screening and Characterization of Findings, the finding was determined to be of very low safety significance (Green) because it did not represent an actual loss of a safety function of one or more non-Technical Specification trains of equipment designated as risk-significant per 10 CFR 50.65.
Inspection Report# : 2008003 (pdf)
Significance: Jun 27, 2008
Identified By: NRC
Item Type: NCV NonCited Violation
Fire Detectors in 480 V Shutdown Board Room 2B2 Not Installed According to NFPA Code
A Green non-cited violatin of Unit 2 License Condition 13, Fire Protection, was
identified since fire detectors in the Unit 2 480 Volt shutdown board room 2B2
were not installed according to the applicable National Fire Protection
Association code. Specifically, two detectors were located near forced
ventilation fresh air inlets. The licensee entered this issue into their corrective
action program and promptly posted a continuous fire watch in the fire area.
This finding is a performance deficiency because the licensee did not properly
locate the smoke detector or the heating, ventilating and air conditioning (HVAC)
system supply air inlet registers to adequately comply with the applicable industry
code of record for the facility. As a result two of the four smoke detectors would
not be effective in detecting fires. The finding is more than minor because it is
associated with the reactor safety, mitigating systems, cornerstone attribute of
protection against external factors, i.e. fire, and it substantially affects the
objective of ensuring reliability and capability of systems that respond to initiating
events. Considering the degree of system degradation, the length of time the
problem existed, the calculated fire frequency for the fire area and shutdown
systems independent of the fire area the finding was of very low safety
significance.
Inspection Report# : 2008006 (pdf)
Significance: Jun 27, 2008
Identified By: NRC
Item Type: NCV NonCited Violation
Sprinklers too far below Ceiling in Cable Spreading Room
A green no-cited violatin of Unit 1 License Condition 16 and Unit 2 License Condition
13, Fire Protection, was identified for failure to install the automatic suppression
system (sprinkler system) in the cable spreading room according to the applicable
National Fire Protection Association standard with regard to the ceiling to sprinkler
head dimension. As a result, the fusible link type sprinkler heads may be
significantly slower than originally intended after fire ignition. The licensee
entered this problem into their corrective action program.
This finding is a performance deficiency because the licensee did not locate the
sprinkler heads according to the applicable industry code of record for the facility.
The finding is more than minor because it is associated with the reactor safety,
mitigating systems, cornerstone attribute of protection against external factors, i.e.
Enclosure fire, and it substantially affects the objective of ensuring reliability and capability of
systems that respond to initiating events. The finding was determined to be of
very low safety significance when the likelihood of fires, the transients that could
be initiated by fires and the probability of failure of mitigating systems for those
transients were evaluated.
Inspection Report# : 2008006 (pdf)
Significance: Mar 31, 2008
Identified By: Self-Revealing
Item Type: NCV NonCited Violation
Inadequate Tagging Procedure
Green. A self-revealing NCV was identified for an inadequate tagging procedure that resulted in a failure to properly isolate a fire hydrant before maintenance. Because of the failure, the hydrant was forced off the associated fire protection system header, depressurized the system, and rendered it inoperable. The licensee entered the problem into their corrective action program and initiated actions to prevent recurrence.
This finding was more than minor because it affected the mitigating system cornerstone objective of availability of systems, i.e. Fire Protection System, and was associated with the protection against fire, an external hazards attribute. While the finding caused the fire protection system to be inoperable, the inspectors determined that the degradation rating used for the significance determination process was low. Therefore, the finding was considered to be of very low safety significance. The cause of the finding was associated with the accurate and up-to-date procedures and work packages aspect of the human performance cross-cutting area. The clearance procedure and Work Order (WO) were not sufficient to ensure continued fire protection system operability during hydrant maintenance.
Inspection Report# : 2008002 (pdf)
Although the NRC is actively overseeing the Security cornerstone, the Commission has decided that certain findings pertaining to security cornerstone will not be publicly available to ensure that potentially useful information is not provided to a possible adversary. Therefore, the cover letters to security inspection reports may be viewed.
Although the NRC is actively overseeing the Security cornerstone, the Commission has decided that certain findings pertaining to security cornerstone will not be publicly available to ensure that potentially useful information is not provided to a possible adversary. Therefore, the cover letters to security inspection reports may be viewed.
Last modified : November 26, 2008