Railway Glass Testing

Railway Glass Testing — FRA CFR 49, Part 223

railway glass testingAll locomotives, passenger cars, and cabooses operating in the United States must have glazing material (windows) that have passed the minimum safety requirements for ballistic resistance testing and falling large object impact resistance testing. The Federal Railroad Administration (FRA) requires Type I certification for front facing windows and Type II certification for side facing windows, as outlined in FRA CFR 49, Part 223. HP White performs both Type I and Type II certification testing in its temperature controlled indoor testing facilities (35’ indoor drop tower and 9 indoor ballistic ranges). The test requirements for Type I and Type II are as follows.

Ballistic:

CFR 49, Chapter II, Federal Railroad Administration, DOT, Part 223, Type I and Type II Ballistic Requirements

  • Number of Samples: 3
  • Projectile: .22 LR, 40 grain Lead Round Nose
  • Required Velocity: Minimum of 960 ft/s
  • Shot pattern: 1 impact located within 3 inches of the center of the sample.
  • Pass/Fail requirement: Three consecutive samples must pass this portion with no complete penetrations, or spalling (shattered test material particulates which penetrate a thin aluminum witness panel).

Large (Falling) Object Impact:

CFR 49, Chapter II, Federal Railroad Administration, DOT, Part 223, Type I Large Object Impact

  • Number of Samples: 2
  • Object: Minimum 24lbs concrete block conforming to ASTM Specification C33L or ASTM C90.
  • Drop Height: 30’ 1” (Minimum impact velocity: 44 ft/s)
  • Pass/Fail Criteria: Two consecutive samples must pass this portion with no complete penetrations, or spalling (shattered test material particulates which penetrate a thin aluminum witness panel).

CFR 49, Chapter II, Federal Railroad Administration, DOT, Part 223, Type II Large Object Impact

  • Number of Samples: 2
  • Object: Minimum 24lbs concrete Block conforming to ASTM Specification C33L or ASTM C90.
  • Drop Height: 27” (Minimum impact velocity: 12 ft/s)
  • Pass/Fail Criteria: Two consecutive samples must pass this portion with no complete penetrations, or spalling (shattered test material particulates which penetrate a thin aluminum witness panel).

Key Specifications:

  • Indoor 35’ FRA large impact drop tower
  • 9 indoor ballistic ranges
  • Photoelectric infrared velocity screens
  • 2 high speed video cameras capable of up to 1M frames per second
  • ISO 17025 accredited laboratory

Standards and Test Methods:

  • CFR 49, Chapter II, Federal Railroad Administration, DOT, Part 223, Type I
  • CFR 49, Chapter II, Federal Railroad Administration, DOT, Part 223, Type II