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ASME B30.7-2016 pdf download

ASME B30.7-2016 pdf download.Winches.
rated load: winch rating in pounds (kilograms) estab- lished by the manufacturer in accordance with Section 7-1.1. rope: refers to wire rope unless otherwise specified. rotation-resistant rope: a wire rope consisting of an inner layer of strands laid in one direction covered by a layer of strands laid in the opposite direction; this has the effect of counteracting torque by reducing the tendency of the finished rope to rotate. service, heavy: service that involves operation within the rated load limit but that exceeds normal service. service, normal: distributed service that involves opera- tion with randomly distributed loads within the rated load limit, or uniform loads less than 65% of rated load for not more than 25% of the time. service, severe: service that involves normal or heavy ser- vice with abnormal conditions. shall: a word indicating a requirement. should: a word indicating a recommendation. spooling: winding ofrope on a cylindrical drum in evenly spaced wraps and uniform layers. standby winch: a winch not in regular service but used occasionally or intermittently as required. swinger drum: a drum that has a wire rope connection point at each flange to allow an overwind and underwind operation. When the rope is wrapped around a derrick bull wheel, it is used to slew or swing the derrick. switch: a device for making, breaking, or changing the connections in an electric, hydraulic, or pneumatic cir- cuit (valve). winch: a power-driven drum(s) that when attached to a load is capable of moving the load (see Figs. 7-0.2-1 through 7-0.2-4). 2 SECTION 7-0.3: PERSONNEL COMPETENCE Persons performing the functions identified in this Volume shall meet the applicable qualifying criteria statedinthis Volume and shall,througheducation,train- ing, experience, skill, and physical fitness, as necessary, be competent and capable of performing the functions as determined by the employer or employer’s representative. SECTION 7-0.4: REFERENCES TO OTHER CODES AND STANDARDS The following is a list of publications referenced in this Standard: ANSI/ASSE Z244.1-2003 (R2008), Control of Hazardous Energy — Lockout/Tagout and Alternative Methods 1 Publisher: The American Society of Safety Engineers (ASSE), 520 N. Northwest Hwy, Park Ridge, IL 60068 (www.asse.org) ANSI/AWS D14.3/D14.3M-2010, Specification for Welding Earthmoving and Construction Equipment 1 Publisher: American Welding Society (AWS), 8669 NW 36 Street, No. 130, Miami, FL 33166 (www.aws.org) ASME B30.10-2014, Hooks ASME B30.20-2013, Below-the-Hook Lifting Devices ASME B30.26-2014, Rigging Hardware ASME P30.1-2014, Planning for Load Handling Activities Publisher: The American Society of Mechanical Engineers (ASME), Two Park Avenue, New York, NY 10016-5990 (www.asme.org)
SECTION 7-1.1: RATINGS AND MARKINGS 7-1.1.1 Basis Winch ratings are dependent upon such factors as applied power, layers of rope wound on the drum, rope diameter and minimum breaking force, drum size, and structural competence of the various winch components and mounting methods. 7-1.1.2 Winch Ratings Winch ratings shall be the manufacturer’s recom- mended total line pull in pounds (kilograms) at a speci- fied rate of speed on a given size drum and prescribed number of layers of rope. 7-1.1.3 Markings Winches shall be marked with the following identifi- cations for each drum: (a) winch rating (b) drum size consisting of barrel diameter, barrel length, and flange diameter (c) rope diameter(s) (d) rope speed in feet per minute (meters per second) at rated load on specified layer (e) power requirement 7-1.1.4 Rope Layer Ratings The manufacturer shall provide line pull ratings for each rope layer and a specified rope diameter. SECTION 7-1.2: CONSTRUCTION 7-1.2.1 General Winches shall be designed and constructed to meet the stresses imposed on their frames and components under all anticipated operating conditions when prop- erly installed and when handling loads not exceeding the manufacturer’s ratings. Welding shall conform to recommended practices of ANSI/AWS D14.3.

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