Guy and Bev, Thanks for your prompt reply. As mentioned I know nothing about the required specifications for the X-ray machine used for PCBA inspection. Is 2D good enough for BGAs, LGAs, QFNs or I need a 3D? As for cost, I am not sure, can we have one between $100 - $250K (Singapore Dollars)? I do not think my country, Singapore required company to register their X-ray machine. However, I have heard that whoever operate the X-ray machine must have a licence to do so and must wear a dosimeter to detect any possible leakage during operation. That is the reason why my company chief safety officer has indicated that we need to purchase the dosimeter should we need to use the X-ray machine at our vendor's facility. Thanks and Regards, ~ Wee Mei ~ ________________________________ From: TechNet on behalf of Bev Christian Sent: Sat 3/27/2010 9:14 PM To: [log in to unmask] Subject: Re: [TN] Personal radiation device for X-ray machine Guy, Good points. Those same details apply to the province of Ontario and I expect they apply to most other states and provinces in our two countries. Bev RIM -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Guy Ramsey Sent: Saturday, March 27, 2010 8:55 AM To: [log in to unmask] Subject: Re: [TN] Personal radiation device for X-ray machine We operate our X-ray equipment under regulations issued by the Commonwealth of Pennsylvania. We are not require to wear dosimeters. The instrument is registered with the state and must be tested for leakage its surfaces and seals. We are also require to have a safety training program and radiation safety officer. Guy -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Lum Wee Mei Sent: Saturday, March 27, 2010 5:03 AM To: [log in to unmask] Subject: [TN] Personal radiation device for X-ray machine Hello, I have to say here that I have completely no knowledge in X-ray machine for PCBA but has been tasked to (1) evaluate and with intention to purchase a suitable X-ray machine for this application and (2) purchase personal radiation monitoring device. My immediate task is item (2) as we will be using a contractor's X-ray to carry out X-ray for some of the PCBAs mounted with BGAs and LGAs very soon. I need to purchase this so-called dosimeter ASAP. I am given a particular brand and told to get either one of the models. As I stared down on the specifications between the different models, I am lost in their translations, what energy range, dose rate, etc, etc. I surfed the internet to understand more but came face to face with so many literature and brands that I am "drown" in them. Ignorant I may be, I am sure those specifications stated in the dosimeter data sheet has to do with the brand or type of X-ray machine that I use at the contractor's facility or that I am going to purchase. I really hope some kind souls out there can help me to have some basic understanding in how I should select the correct dosimeter for my application. I am looking at one that can be wore around the neck (for both genders) or clip on breast pocket for male. Thanks and Regards, ~ Wee Mei ~ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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