Quick Hits

Episode 2: Aircraft Vicinity & Painting Hangars (513.5(C) – 513.5(D))

SLIDE 1 (HOOK / COVER)

⚡ NEC Quick Hit: Aircraft Zones & Painting Hangars (Part 2) ⚡

How far do hazardous zones extend around aircraft engines, fuel tanks, and paint booths? Let's check Section 513.5! 👇

SLIDE 2 (MAINTENANCE & STORAGE HANGARS)

The 5-Foot Rule Around Aircraft:

• Engine & Fuel Tank Zone: The area within 1.5 m (5 ft) horizontally from aircraft power plants or fuel tanks is classified as a Class I, Division 2 or Zone 2 location.

• Upward Extension: This classified boundary extends upward from the floor to a level 1.5 m (5 ft) above the upper surface of wings and engine enclosures.

SLIDE 3 (AIRCRAFT PAINTING HANGARS)

• Division 1 Zone: The area within 3 m (10 ft) horizontally from aircraft surfaces, from the floor to 3 m (10 ft) above the aircraft, is classified as Class I, Division 1 or Zone 1.

• Division 2 Zone: The area horizontally between 3.0 m (10 ft) and 9.0 m (30 ft), from the floor to 9.0 m (30 ft) above the aircraft surface, is classified as Class I, Division 2 or Zone 2.

• Separated Areas: Stock rooms and control rooms are unclassified if mechanically ventilated (4+ air changes/hour), positive pressure, or separated by solid partitions.

SLIDE 4 (WRAP-UP)

💡 Apprentice Pro-Tip: Hangar area classifications depend heavily on the dimensional outline of specific aircraft types, so always account for future parking patterns to avoid costly post-installation reclassifications!

💬 Save this post for your next aerospace engineering layout!

🔗 More code breakdowns at www.JoshTheSparky.com

← View Chapter 5 Home

← Article 513 Aircraft Hangars

← Back To Quick Hits Home