Sometimes easy questions require complicated solutions. In the case of How much weight can a safety harness take care of? we have both an easy answer and a greater complex one. (CAPACITY OF SAFETY HARNESS)
The easy solution is that this: test the connected tags and/or manufacturer’s statistics. This is the recommendation that needs to be heeded regardless of the piece of the device or the query you may have. OSHA will continually refer to a producer, so it is pleasant to recognize what the manufacturer says.
ANSI Specifications: CAPACITY OF SAFETY HARNESS
However, while this is actually the simplest response, there may be a much extra to it. So, where will we begin? A properly vicinity is with ANSI, the American National Standards Institute. ANSI is the organization answerable for growing protection specification and testing recommendations for most of the Personal protective equipment you operate on the process, together with harnesses. In this case, the usual in question is the ANSI/ASSE Z359.1-1992 (R1999). This widespread gives specification and testing guidelines for the diverse components of your fall arrest device. The weight range from 130 lbs (58.967) to 310 lbs (140.614 kilograms). Therefore, most trendy harnesses will support up to 310 lbs (140.614 kilograms). Note that I stated ‘most’. Just because the manufacturer CAN cowl up to 310 lbs, doesn’t mean they will. A smaller-sized harness, as an example, can be rated for much less weight. Again, test your harness producer’s information for the weighted variety particular to your equipment.
Safety harness lanyard must be a minimum of 1/2-inch nylon, or equivalent, with a maximum length to provide for a fall of no more than 6 feet. The rope shall have a nominal breaking strength of 5,400 pounds (2449.399 kilograms).
This begs the question, why did ANSI/ASSE (CAPACITY OF SAFETY HARNESS) use that weight range? You may already be conscious that OSHA calls for that no more than 1800 lbs (816.4663 kilograms) of pressure be placed upon the body in a fall arrest event, in an effort to avoid damage to inner organs. With a person inside the one hundred thirty to 310 lb (140.614 kilograms) weight variety, the standard equipment to be had (harnesses, 6 ft. Lanyards with deceleration gadgets, manufactured anchor factors, and many others.) should hold the forces on the body under that 1800 lb (816.4663 kilogram) restriction.
Increased Weight Leads to Increased Risk inside the Event of a Fall
When a heavier worker is brought into the equation, there’s a chance that extra forces could be located upon the body in the occasion of a fall for one or both of motives: 1) the additional weight itself manner a more difficult fall and/or 2) extra weight could cause additional sag or stretch of the autumn arrest machine itself, which means an extended unfastened-fall distance and extra force at the frame.
Helpful Advice for Heavier Workers
So what must heavier people do? This without a doubt is a vital query, thinking about the fashion closer to large employees in latest years. Simply placed, heavier employees who need to be in fall situations need to have additional design considerations for his or her fall machine. In a few times, where fall distance permits, extra deceleration pouches could be designed into the machine, however extra design considerations for the lanyards and anchor factors received’t be counted except the harness is likewise addressed. Some producers produce harnesses that accommodate people up to 400 lbs (181.437 kilograms). A heavier worker in this variety who uses any such harnesses can be secure so long as the lanyard and anchor point has additionally been addressed. Discuss this with the producer of every one of the additives and/or an engineer.
More than Just Body Weight!
Finally, it’s miles essential to notice that each of the weights discussed right here aren’t totally the load of the worker. In order to properly make certain your harness is acceptable, you ought to take into account the burden of the employee as well as any clothing and connected device. The fine factor to do is to calculate in your worst case state of affairs (as an instance, keep in mind that an employee could be carrying tons extra clothing inside the winter months in northern areas than inside the summer season months).
Full frame safety harnesses are manufactured from unique forms of material webbing which can be sewn collectively to into numerous configurations or straps. Common harness webbing fabrics encompass nylon and polyester. Specialty fabric like Kevlar is used for harnesses utilized in dangerous packages like welding and arc flash environments. The harness straps are tightened to the frame via buckles. Common harness buckles encompass tongue, brief attachment, and spring tension. A trendy full body harness has straps and buckles that tighten around the shoulders, legs, and chest.
Full frame safety harnesses also are designed with one or greater attachment factors. The attachment point can be an essential fall arrest machine hyperlink like an again D-ring, or it can be a keeper for a lanyard that’s not in use. Attachment factors are sewn into the harness webbing and may be manufactured from stamped or solid steel, or plastic. The place of the attachment factor depends upon the kind of harness and what application it will likely be used in. Standard fall arrest harnesses provide an unmarried D-ring attachment on the back. This permits for attachment of a fall arrest lanyard and enables to preserve the body upright for the duration of a fall occasion. Harnesses used in work positioning are designed with aspect D-ring which permit for smooth attachment of positioning lanyards. Harnesses used in vertical fall safety structures permit for a guided fall arrester to be connected to the front D-ring.
Conclusion: CAPACITY OF SAFETY HARNESS
- Safety harness weight range capacity- 130 lbs (58.967) to 310 lbs (140.614 kilograms)
- Safety harness lanyard Nominal breaking strength of 5,400 pounds (2449.399 kilograms)