A-A-50606 (SH)
2.2.2 Specific.
2.2.2.1 Rough Usage. The PHARS power unit, hose reel, spreader, cutter and ram shall each be able to withstand a fall and operate as required after being raised two (2) feet above a steel plate simulating a ship’s deck. The two (2) feet shall be measured from the lowest point of the assembly when raised.
2.2.2.2 Performance. The PHARS shall meet the performance requirements when in operation using the to-be-supplied Diesel power unit, a total of 175 feet of hydraulic hose connected between the power unit and the tool in use and with the remote manifold block connected to the tool (including any permanently attached hydraulic hose) by not more than 25 feet of hydraulic hose.
(a) The remote manifold block shall secure the pressure to the tool to enable tools to be changed without the need to have a second operator stationed at the power unit to manipulate manifold block at the power unit.
(b) The PHARS, with tools of the operator’s choice, shall be capable of making, in less than 20 minutes (including time for repairs or adjustments), a 25 inch clear opening in a 4 foot by 4 foot by 1/4 inch thick, ASTM A 36, mild steel plate vertically fixed to a suitable foundation with bracing structure for a ram fixed at a distance of not less than 28 inches from the test panel. “Clear” indicates a totally unobstructed opening.
(c) The cutter shall be capable of shearing 10 portions of steel off a length of 1-inch diameter solid ASTM A 36 steel bar stock in 15 minutes or less (including time for repairs and adjustments).
(d) The system shall be able to satisfy the performance requirements with the primary power unit inclined 15 degrees from the horizontal in either the longitudinal or transverse axis.
2.2.2.3 Force.
(a) The PHARS shall be able to meet the force requirements with the tools powered by the diesel power unit with a total of 175 feet of hydraulic hose connected between the diesel power unit and the spreader and ram. Operating the spreader and the ram from the fully closed position to the required open distance and returning the spreader and cutter to the fully closed position shall constitute one (1) complete cycle.
(b) The spreader shall be capable of generating a spread force of 14,500 pounds or greater and while returning to the fully closed position the spreader shall be capable of generating a pulling force of 7,000 pounds or greater with the force measured at the point at which pulling shackles are normally attached to the spreader and with the spreader arms cycled open to a distance of 12 inches or greater (measured at the shackle attachment point) from the fully closed position.
(c) The ram shall be capable of generating a push force of 15,000 pounds or greater when cycling open to a distance of 12 inches or greater from the fully closed position; and while returning to the fully closed position, the ram shall be capable of generating a pull force of 6,000 pounds or greater.
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