Explosion proof fittings within a handhole?

[Aesop]

We are placing handholes at key points along a bulkhead to feed power to gas/diesel fuel dispensers used by boats moored next to the bulkhead. While the handholes are not in the C1D2 area, the conduits entering the handhole cross under the class I Div 2 zone. As a consequence, I need to seal the conduits per 2011 NEC ( see illustration in handbook exhibit 514.5.)
The twist is that I'm not bringing the conduits up above ground to be able to place a seal off in the conventional location. Instead, I need to seal them as they enter the handhole. (the entire bulkhead is a "freight handling" area and above-ground panels would restrict movement and would soon be destroyed - that's why the handholes).
It seems that a conventional explosion proof fitting would work and would be accessible if placed in a handhole.....but I've never seen it done.
Is there any experience with installing explosion proof fittings on galvanized rigid steel conduits within the boundary of a handhole? If so, what methods would be advisable or avoided?
Thanks.

 

[rbalex]

It is difficult to determine from the OP description whether this installation is actually within the scope of Article 514. Technically, Section 514 would require a stub-up for the seal. It has to be above grade. [Section 514.8, second to last sentence]

That said, Section 514.8 is somewhat unique. It isn't a general requirement or it would be covered by Section 501.10(A) and the 501.10(A) Exception wouldn't be necessary. Section 514.8 is based on anticipated spills at the hose or pipe head. Note it doesn't say the underground is actually classified but rather you must seal where it emerges above grade. (You gotta establish a boundary somewhere) In most 501.10(A) applications the only seal would be at grade in the classified location.

Personally, though not absolutely compliant, a seal at the first handhole wouldn't bother me too much. Make sure there is ... no union, coupling, box, or fitting between the conduit seal and the point of emergence...