Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-155 - Safety standards for construction work › Part M - MOTOR VEHICLES, MECHANIZED EQUIPMENT, AND MARINE OPERATIONS › Section 296-155-620 - Pile driving equipment

Current through Register Vol. 24-14, July 15, 2024
(1)
General requirements.
(a) Boilers
				and piping systems which are a part of, or used with, pile driving equipment
				must meet the applicable requirements of the American Society of Mechanical
				Engineers, Powers Boilers (section I).
(b) All pressure vessels which are a part of
				or used with, pile driving equipment must meet the applicable requirements of
				the American Society of Mechanical Engineers, Pressure Vessels (section
				VIII).
(c) You must provide
				overhead protection, which will not obscure the vision of the operator, and
				which meets the requirements of Part L of this chapter. Protection must be of
				2-inch planking or other solid material of equivalent strength.
(d) You must provide stop blocks for the
				leads to prevent the hammer from being raised against the head block.
(e) You must provide a blocking device,
				capable of safely supporting the weight of the hammer for placement in the
				leads under the hammer at all times while employees are working under the
				hammer.
(f) You must provide guards
				across the top of the head block to prevent the cable from jumping out of the
				sheaves.
(g) When the leads must be
				inclined in the driving of batter piles, you must make provisions to stabilize
				the leads.
(h) You must visually
				inspect all working equipment at the beginning of each shift.
(i) Fixed leads must be provided with ladder,
				and adequate rings, or similar attachment points, so that the loft workers may
				engage their full body harness lanyard to the leads. If the leads are provided
				with loft platform(s) such platform(s) must be protected by standard
				guardrails.
(j) Pile drivers with
				swinging leads must have a wire rope safety strap on top end.
(k) Spud bars must be of hard wood with
				smooth round handle end for safe handling. Iron shod spud bars are
				prohibited.
(l) A follower block or
				driving cap must be used with a drop hammer on all piling except sheet
				piling.
(m) Steam hose leading to a
				steam hammer or jet pipe must be securely attached to the hammer with an
				adequate length of at least 1/4-inch diameter chain or cable to prevent
				whipping in the event the joint at the hammer is broken. Air hammer hoses must
				be provided with the same protection as required for steam lines.
(n) You must provide safety chains, or
				equivalent means, for each hose connection to prevent the line from thrashing
				around in case the coupling becomes disconnected.
(o) Steam line controls must consist of two
				shut-off valves, one of which must be a quick-acting lever type within easy
				reach of the hammer operator.
(p)
				You must provide guys, outriggers, thrustouts, or counterbalances as necessary
				to maintain stability of pile driver rigs.
(q) You must install ladders constructed in
				compliance with this chapter on all pile drivers from the hoist platform to the
				head block, and in such position that workers using ladders will not come in
				contact with lines, sheaves, etc.
(r) You must not use drop hammers which have
				been chipped on the face for pile driving.
(s) You must replace or properly repair
				groove worn drums or spools to present a smooth working surface.
(t) You must maintain at least two full wraps
				of cable on hoisting drums.
(u) You
				must provide proper racks for storage of cross-cut saws.
(v) Every hoisting drum used as a pile driver
				must be equipped with manually operated dogs or pawls to hold suspended loads.
				You must only use foot brakes to hold suspended loads until drum dogs are
				engaged. The dogs must be visible from the operator's station or be equipped
				with a positive direct connected telltale which must be visible to the
				operator.
(w) No counterweight or
				spring arrangement on dogs is permitted which would allow dog to be
				automatically disengaged either by relieving the load or rolling the
				drum.
(x) In every crew you must
				designate a signal person. The driver operator or drum person must receive
				signals from no others, except when loftworker is above. The hammer must not be
				lowered except on the loftworker's signal.
(y) You must not use spliced hammer lines
				.