Is there a standard for Hazardous Location Static Grounding?

[rgbrea]

I need a practical standard to refer to for grounding Static in a Hazardous Location. Ideally something that suggests wire type, wire size, distance to objects, number of grounding rods etc. NFPA77 has an appendix that has some pictures but no real recommendations. My clients are looking for something more than “we like to see kind” of advise.

 

[rbalex]

I think your best bet is the Ammerican Petroleum Institutes (API) Recommended Practice RP 2003, Protection Against Ignitions Arising Out of Static, Lightning, and Stray Currents .
Another "introductory" would be APR RP 540 which covers general electrical installations. It has a fairly comprehensive bibliography/reference section.

 

[rgbrea]

Thanks I've just down loaded the API document. Its useful thank you. I guess I'm looking for over simplified details. Everything I've read tells me that essentially every thing should be bonded and grounded but not how they should be bonded. I recognise that almost no current will flow on these conductors so wire size should not be an issue. On the other hand from a practical perspective I'm used to seeing a multi stranded #14 etc. It would be nice to have a recipe book to refer to.

 

[rbalex]

Ah, well the "how" is generally covered in the National Electrical Code (NEC) Article 250, Part V, starting in section 250.90. There are MANY options. The API 540 that I recommended also has a few details. At this point, I'd also recommend the Process Industries Practices(PIP)at

http://www.pip.org,

but the “details” they have available for grounding/bonding are $1000.

My previous employer was a major contributor and I was a principal reviewer of many of the PIP standards. I have since lost access to them though. They are still excellent and generally well accepted.

 

[fishon]

A good source of reference is Stewart R. Browne Manufacturing. There publication "Grounding and Bonding Applications for Control of Static Electricity", is full of details, as well as parts lists and pricing.

 

[rgbrea]

Thanks this is exactly what I'm looking for. I just whish it had the "stamp" of ANSI,UL, or NFPA etc. Most other hazadrs have standards to which one can say you comply with.

Thanks again to rbalex. I doubt I'll be shelling out $1000 any time soon but the I have looked through the NEC it's not that diferent from what the Canadian code says. (The border never gets in the way of good practice). Thanks.