Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 3a - BOILER AND UNFIRED PRESSURE VESSEL REGULATIONS
Subchapter B - REQUIREMENTS FOR BOILERS AND UNFIRED PRESSURE VESSELS
GENERAL REQUIREMENTS
Section 3a.35 - Ladders and runways

Universal Citation: 34 PA Code ยง 3a.35

Current through Register Vol. 54, No. 38, September 21, 2024

(a) Walkways, runways and platforms are required between and on top of boilers, which are more than 8-feet high from the operating floor to afford accessibility for the operation and servicing.

(b) Walkways, runways and platforms must meet the following requirements:

(1) Be constructed of metal.

(2) Be constructed of safety treads, standard grating, or similar material with a minimum clear width of 30 inches.

(3) Be constructed by bolts, welds or rivets.

(4) Be equipped with handrails that are 42-inches high with an intermediate rail and 6-inch toeboard.

(c) A stairway that is a means of access to the walkways, runways or platforms must not exceed an angle of 45°.

(d) A ladder that serves as a means of access to walkways, runways or platforms must be constructed:

(1) Of metal.

(2) So the rungs extend through the side members and are permanently secured to the side rails.

(3) So the front of the rungs have a distance of at least 30 inches from the nearest permanent object on the climbing side of the ladder.

(4) So the back of the rungs have a distance of at least 6 1/2 inches from the nearest permanent object.

(5) So there is a clear width of at least 15 inches from the centerline of the ladder on either side across the front of the ladder.

(e) A welder qualified under Standard Qualification Procedures of the American Welding Society is required for welding a walkway, runway, platform or ladder.

(f) A walkway, runway or platform exceeding 6 feet in length must have at least two means of exit access.

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