ASME A120.1-2008 pdf download

ASME A120.1-2008 pdf download

ASME A120.1-2008 pdf download.Safety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building Maintenance.
5 INSPECTIONS, TESTS, OPERATION, AND MAINTENANCE 5.1 Inspections and Tests 5.1.1 Performance Tests. Before an installation is initially used, the equipment shall be successfully tested by its manufacturer/supplier with the rated load through the complete range of operation on all drops and be so certified in writing. The result of the demon- stration shall be signed by the inspection personnel and filed with the building owner. NOTE: It is the intent of this clause that the complete installation be tested. If a platform or other component has not been provided, suitable temporary components shall be utilized for the test. 5.1.2 Periodic Inspections (a) To determine that they are in safe operating condi- tion, all parts of the equipment, including control sys- tems, shallbe inspectedbyaqualified personand,where necessary, tested by a qualified person, at intervals not exceeding 12 mo. (b) Parts subject to wear, such as wire ropes, bearings, gears, and governors, shall be inspected or tested to determine that they have not worn to such an extent as to affect the safe operation of the installation. 5.1.3 Maintenance Inspections and Tests. The equipment shall undergo a maintenance inspection or test every 30 days, or before each use if the cycle is more than 30 days. This inspection and test, and the inspections required by para. 5.1.4, shall be made by a qualified person. The results of these inspections and tests shall be recorded in a log, which shall be available for review. Each log entry shall include the date of the inspection or test and shall be signed by the person making the inspection or test. 5.1.4 Special Inspection ofGovernors and Secondary Brakes (a) Special inspections and tests of the governor and secondary braking system shall be made at intervals not exceeding 1 yr. (b) The inspection and test shall include a verification that the initiating device for the secondary braking sys- tem operates at the proper overspeed.
5.1.5 Wire Rope Inspection Procedure. The need for replacement of suspension wire ropes shall be deter- mined by regular inspection and shall be based on the condition of the wire rope inspected. Wire rope in active service should be visually inspected once every working day. A thorough inspection shall be made once a month, or before each use if the suspension wire ropes have been inactive for 30 days or longer and are placed into service. Dated and signed monthly reports of that inspection must be kept, indicating the condition of the ropes. Any of the following conditions, or combination of conditions, shall be considered as sufficient reason for the removal of the wire rope from service: (a) four randomly distributed broken wires in three lays or two broken wires in one strand in three lays (b) distortion of rope structure such as would result from crushing, kinking, or bird-caging (c) evidence of heat damage (d) reduction from original diameter by more than the following amounts: (1) 1 ⁄ 64 in. (0.397 mm) for 5 ⁄ 16 in. (8 mm) diameter rope (2) 1 ⁄ 32 in. (0.794 mm) for 3 ⁄ 8 in. (9.5 mm) to and including 1 ⁄ 2 in. (13 mm) diameter ropes (3) 3 ⁄ 64 in. (1.19 mm) for 9 ⁄ 16 in. (14 mm) to and including 3 ⁄ 4 in. (19 mm) diameter ropes (e) noticeable rusting, corrosion, or pitting, or more than two broken wires in the vicinity of end attachments (f) evidence of core failure (a lengthening of rope lay and a reduction in rope diameter suggests core failure) (g) more than one valley break (broken wire). A wire break in the valleys between strands indicates an abnor- mal condition, possibly fatigue and breakage of other wires that are not visible. 5.1.6 Hoist Test. Each day, before lowering person- nel below the top elevation of the building, the hoist shall be tested in the lifting direction with the intended load to make certain it has sufficient capacity to raise the personnel back to the boarding level.

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