Wellhead compressor - marine grade engine accessories?

[JADeak]

We have a number of wellhead compressors with automotive derivative engines (Compressco and Sertco). Regulatory compliance now drives the need for these packagers to use appropriate hazardous area classified end devices, panels, wiring, and engine accessories. Everything is reasonably priced for most items; however Class 1 Div. 2 engine accessories (starter, alternator, ignition system, emission package) are extremely expensive for these small engines.

Research shows that marine grade equipment (rated to SAE J1171, UL 1500, or USCG) is equivalent to explosion-proof by UL 698 (Class 1, Div. 1) standard.

Has anyone considered using marine grade equipment on engines in Div. 2 areas? Any thoughts on acceptability to NEC and local codes?

 

[Bribyk]

I have seen marine exhaust manifolds used in gas compression on automotive-based small/big blocks but I don't know the approval details. Here it has to be CSA-approved.

As for the ignition...yep, it's expensive stuff compared to the automotive system you can get at Pep Boy's or Autozone but it's rated and runs harder/longer than a car would.

Consider a gas or air starter instead of electric.
Older packages were pneumatically controlled and used magneto ignitions so an alternator and battery weren't required.

 

[bcs5274]

altronic has a kit for an anltronic I magneto to go on automotive engines, comes with a pickup wheel to mount to the crankshaft and the magneto and coil, then you utilize a sealed distributor for a marine application and sealed leads and plugs