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Technology Stocks : Advanced Micro Devices - Moderated (AMD)
AMD 214.990.0%Dec 26 9:30 AM EST
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To: Petz who wrote (55129)9/15/2001 12:27:30 AM
From: burn2learnRead Replies (1) of 275872
 
One reason for the need to improve on reactor design is CRUD. Plants get build using the best known materials and design known to date. As you introduce new variables with any design you get new learning’s. I major cost to reactor plants to overhaul and repair. Repair jobs are mapped in man-rem, a job in a particular high radiation area will give X amount of radiation exposure...this is known by conducting radiation surveys. The only way you can combat the radiation is TIME, DISTANCE, and SHIELDING. Reduce the amount of time each QUALIFIED man stays in an area (limit exposure to each person), work at maximum distance from high rad spot, and use shielding (lead, water, ect). Each has a huge cost. You have to have X amount of qualified radiation Workers to complete ONE job, this does not include the people not qualified to do maintenance...just stand watch, time keep ect.
Downtime is extended due to several factors..waiting for short lived activity to decay, cool down of high temp / high pressure reactor plants and of course QA. Quality and safety always job one.
Designs that limit plant materials from eroding and becoming activated in the rad flux is key. Designing a plant that does not produce activated corrosion and erosion material that also ha s a long half-life is key. All plants have low flow areas were this material will deposit....this will lead to high radiation areas and increased maintenance cost and extended downtime.
We are not working on your car, your house...this work is an art of itself.

Mike...yes I've been exposed to a few rem lifetime
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