NFPA 77 and the use of jumper cables and star washers at flanges
One of, if not the most critical, aspect of flammable liquids/gases piping is the bonding and grounding of the piping. And unfortunately, this "safety system" is often neglected and not managed as a PREVENTION LAYER of protection. It's not like we don't have good guidance in this need; NFPA 77: Recommended Practice on Static Electricity is one of the best written and organized RAGAGEP published today. We also have some industry guides that also provide some specific practices for certain industries. So with ample guidance, how/why is bonding and grounding viewed as a lesser safety system? A few weeks back I posted an article about pipe flanges and in that article I discussed jumper cables (as one was shown in the picture with the article as shown here) and I got several inquisitive inquiries about those "jumper cables". All the communications made it a point to remind me that NFPA 77 does NOT require "jumper cables and star washers" and to be honest - they are correct - well sort of... |
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