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Emerency Diesel Generator

Emerency Diesel Generator

Emerency Diesel Generator

Hi everybody.
I have questions regard of entire Emergency Diesel Generator Replacement of Nucelar Power Plant for regulation guide, licensing issue.

Please provie your experience for EDG.
1. What regulation do I have to review(for ex. NRC Reg. Guide, SRP, etc.) Would you please tell me specifically no. and description?
2. What code and standard(IEEE, NFPA, etc) do I have to review?
3. What do I have to review regarding the missil protection requirement?
4. What do I have to review regarding the requirement for the control panel?

I want you that anything you have information can be helpful including above.

Best regrads  

RE: Emerency Diesel Generator

Are you replacing an existing EDG at a facility?  Most of this information should be included in your purchase order.  The plant you are working with will tell you what Code/year, regulations and standards they are committed to.  Many plants will be different for what year they are committed.  They should also be able to provide you with the original specification their EDG was supplied to.  That should list a lot of the information you are seeking.  There are many, many documents that will factor into this.  You can get some guidance here but a good answer will require much more information and the bottom line is that the plant should be providing this information to you.

RE: Emerency Diesel Generator


The website for the US Nuclear Regulatory Commission (www.nrc.gov) might be a good place to start.  I recommend starting with the Standard Review Plan (SRP)(NUREG 0800), Chapter 8: http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr0800/ch8/

I echo jpankask's comment about looking at your current documentation if you're replacing a diesel generator.  In the US, each plant has a final safety analysis report that  outlines how they meet the SRP and which would also describe the regulatory guides and IEEE standards to which they've committed.  

Patricia Lougheed

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RE: Emerency Diesel Generator

The diesel gensets for nuclear plant are (literally) a matter of plant safety - almost no exaggeration to call it a matter of life and death.

Certainly the old caustic reply, "Do you want to make a federal case out of it?" IS applicable.  These units (everything from fuel inspections, foundations, starters, starting air, air lines, fuel lines, pumps, oil, backup controllers, etc. ARE a federal issue, because every part on their frame and foundation is on the plant's FSAR review.   

If your boss has given you such an "open-ended" question to research so blindly, you absolutely need to get better guidelines - because he (your boss) has no clue of the regulatory world ne has thrown you into.   

If you are asking from a well-needed sense of wonder and curiosity, I (we ?) welcome your quest.   

RE: Emerency Diesel Generator

Your Question is very open ended as to your specific requirements dealing with such a critical system to be maintained.

If you are looking at completely replacing all associated back up power diesel generators, what do you currently have and what has changed in the infrastructure of you nuclear plant since the first installation of the back up units?

 For example; extensions to current laboratories, offices, control rooms, motors and pumps plus any future expansion to name a few.

You in all likely hood will need both a Static Uninterruptible Power supplies (SUPS) with a diesel back up generator circuit, "Break before Make to and from you main utility power.

For different areas of the plant and (RUPS) Rotary Uninterruptible Power Supply. The rotary system involves a flywheel, batteries, Clutch, DC motor alternator and diesel Generator.

These systems are in the multi millions of dollars and you also have to plan to secure a supplier with long term reliability and a very detailed service contract.

For almost all of your questions regarding codes, any big supplier of back up diesel power will be able to assist you such as Caterpillar and Cummins. For UPS and RUPS there is Exide, Powerware, Pilar, etc just to name a few.

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