HKIE Professional Assessment - Nuclear Discipline case studies
HKIE Professional Assessment - Nuclear Discipline · Put your knowledge to work in context.
The HKIE Professional Assessment in the Nuclear Discipline is the route by which a trained engineer demonstrates to the Hong Kong Institution of Engineers that they can practise independently at professional level in nuclear engineering. It is intended for engineers who have completed the Institution's structured training or an equivalent scheme and who work, or intend to work, in nuclear power, radiation protection, radioactive waste management, decommissioning, regulatory bodies or supporting consultancies. The HKIE Professional Assessment - Nuclear Discipline case studies are 5 cases and about 4,669 words.
1Small-break LOCA re-analysis: a 187 K margin built on an unqualified CHF correlation
Your consultancy is supporting the periodic safety review of a three-loop 1000 MWe PWR. The licensee has re-analysed a 25 mm equivalent-diameter cold-leg small-break LOCA using a revised critical heat flux correlation and a reduced accumulator pressure of 4.2 MPa (down from 4.5 MPa).
915 words, about 5 min2Extremity dose of 512 mSv: a badge reading, a disputed explanation and a deadline
An industrial radiography contractor in Hong Kong uses a 1.85 TBq (50 Ci) Ir-192 source for weld inspection. A radiographer's quarterly dosimetry returns a whole-body Hp(10) of 18 mSv and an extremity dose of 512 mSv from a ring badge worn on the index finger.
975 words, about 5 min3A bulging drum at 3.6% hydrogen: storage, repackaging and a five-year deferral
The low-level radioactive waste store at a Hong Kong site holds about 1,200 200-litre drums of cemented ion-exchange resin and evaporator concentrate, some dating from the early 1990s. During a routine inspection one drum is found with a bulging lid, a surface dose rate of 2.4 mSv/h, and a headspace hydrogen concentration of 3.6% v/v measured with a sniffer through a temporary piercing.
899 words, about 4 min4A HK$180 million diesel generator justified by a 14% CDF reduction
Your utility's Level 1 PSA for a two-unit PWR gives a baseline internal-events core damage frequency (CDF) of 4.2×10⁻⁶ per reactor-year. A proposed modification adds a third air-cooled emergency diesel generator at a cost of HK 180 million; the model predicts a CDF reduction of 6×10⁻⁷ per reactor-year.
938 words, about 5 min5A 2-hour seal in a 4-hour wall: the certificate, the graduate and the deadline
You are the responsible engineer for a ventilation and fire-safety modification to a low-level radioactive waste store. At the pre-occupancy walkdown you find that 12 of 60 fire-damper penetration seals in a 4-hour fire-rated wall were installed with a sealant system tested only for a 2-hour rating.
942 words, about 5 min