Technical Specifications
The Safety Limit for the NBSR
What is 842 Degrees F (450 degrees C)
This system provides makeup water to the thermal column and thermal shield systems
What is the Demineralized water machine (demin day tank etc.)
The condition of the reactor if the only known information is a steady, constant vertical trace on NC-5.
What is either critical or sub-critical.
What three Emergency Classifications does the NBSR define.
Notification of Unusual Event
Alert
Site Area Emergency
These documents set internal policies and practices for the NBSR
What are Administrative Rules.
A qualitative verification of acceptable performance by observation of channel behavior, or by comparison of the channel with other independent channels or systems measuring the same variable.
What is a Channel Check
Name ALL heat exchangers that receive secondary water from the cooling tower basin.
HE-1(ABC) HE-2, HE-6, HE-9, HE-10.
Main Primary, Purification Loop, Thermal Shield, Thermal Column, Helium Compressor.
14. (6 from fuel, 8 from moderator).
For the three emergency classifications, what is the action level for total dose absorbed in 24 hours for each?
15mR NOUE
75mR Alert
375mR Site Area Emergency
What document(s) provide authorization to deviate from written procedures (and whom is the authority given to)
Control valves in the emergency core cooling system shall be exercised ___________
Quarterly
The flushing of a portion of high mineral concentration cooling tower system water down the drain, while simultaneously replacing it with fresh water.
What is Blowdown
For a reactor operating in the under-moderated region, an INCREASE in moderator temperature will have what effect on:
Keff
Resonance Escape Probability
Thermal Utilization Factor
Keff DECREASES
Resonance Escape Probability DECREASES
thermal utilization factor INCREASES
The NBSR must report a security breach affecting reactor confinement to the NRC within ______
Within 1 hour of discovery
During a procedural review/audit, the auditor is interested in the datasheet from the 2018 quarterly tests of the diesel generator. Where are these stored/provide a copy.
numerous places, Hard copies in control/document room. Digital scans on R:Drive.
If at all, when may the rundown bypass for reactor outlet temperature be place online?
If any, name all rundowns / setpoints associated with the thermal shield system, and at which power level they may be bypassed.
consecutive tube flow low (8)
upper header flow low (100gpm)
lower header flow low (27gpm)
may be bypassed at or below 100kW power.
At the beginning of a reactor cycle, the reactor reaches criticality with a shim bank height of 22 degrees. Using the attached rod curve data, determine the excess reactivity and shutdown margin per TS of the NBSR
excess reactivity ~ 6.68$
SDM ~ $15
Who and how often reviews the emergency plan?
CRO or CROE Biennially.
What are the criteria for staff to be issued dosimetry form the NBSR
annual exposure likely to exceed 10% of limits in 10cfr20.
Minors to receive a dose of 10% limits in 10cfr20
Declared pregnant workers to receive dose 20% of 10cfr20 limits
Any individual entering a high rad area.
Who is required to serve on the Safety Evaluation Committee and WHO is currently serving in that role.
No less than 4 members. at least two from NCNR and one from HP. director appoints all members.
includes ex officio members: CRO, CRE, Senior HP
At this pressure, the Low CO2 Pressure, local audible and visual alarms clear. Vaporizer turns on
What is 245 PSI.
calculate the estimated critical position for the following data.
5 deg: 100cpm
7 deg: 150 cpm
12 deg: 400 cpm
15 deg: 900 cpm
18 deg: 1600 cpm
21 deg: 2800 cpm
4 additional degrees to go critical (25 degrees total)
Perform a table-top drill for a report of a rabbit sheared in the receiver.
Initial Conditions:
Steady-State operation at 20MW.
User in rabbit lab reports local radiation instrument alarming.
evaluate drill
AR 1.0 list this as a conflict resolution method.
Acknowledge
Express
Identify
Outcome
Understanding