Rank: Forum user 
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All,
I have tried to search on the forum but for some unknown reason an error ocurred on all three attempts.
Therefore I approach my learned colleagues for opinions.
Fall arrest full body harness having two single lanyards connect through independent shock absobers/ decelartion devices both connected to the "D" ring..............Is this acceptable? I have it at the back of my mind that I read of an accident where this was used and proved ineffective in protecting the worker. I have since believed that they were not acceptable for fall protection. I welcome your views and stand corrected if wrong.
Do others know of such use, or disasters, and is it acceptable and legal??
Regards
Wizard
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Rank: Super forum user
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Apologies if i have read your post wrong but are you asking if you can connect TWO lanyards together, both with shock absorbing effect? If so, no. They are to be used independently.
If this is not the case, please supply further info as it might be a case of using an inertia reel.
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Rank: Forum user
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Frankc,
Maybe I wrote it badly.
One full body harness, two independent single lanyards each with their own independent shock absorber both connected to the "D" ring and used as a double lanyard for 100% tie off application?
As opposed to a double lanyard connected to one shock absorber.
Hope this gives you a betetr picture.
Regards
Wizard
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Rank: Forum user
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I can't see a problem with this. We have used the double lanyard set up many times. It will depend on the work activity being used though. Scaffold experts will give the best advice.
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Rank: Forum user
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Gerry D, I appreciate your opinion, however, some manufacturers state "Double-legged lanyards are used for 100% tie-off safety. It is important, however, to understand the safe and proper use of a double-legged lanyard when one leg is not being used.
If one leg of a double-legged lanyard (with a shock absorber pack OR tubular-style shock absorber) is not being used, the unused leg should not be attached to any permanent fixture on a harness, such as side D-rings. This will inhibit proper operation of the shock absorber design.
This plus I am sure I read a safety alert about the same subject where someone fell and the shock absorber didnt operate as designed because of the second Shock absorber actuating in addition to the main one craeting a division of fall weight, direction of pull through a separate shock absorber.
Hence the reason I seek others opinions
Regards
Wizard
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Rank: Forum user
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SNAP HOOK COMPATIBILITY
On the subject of snap hook compatibility, OSHA states that:
(5) Snap hooks shall be sized to be compatible with the member to which they are connected to prevent unintentional disengagement of the snap hook by depression of the snap hook keeper by the connected member, or shall be a locking type snap hook designed and used to prevent disengagement of the snap hook by the contact of the snap hook keeper by the connected member. Effective January 1, 1998, only locking type snap hooks shall be used.
(6) Unless the snap hook is a locking type and designed for the following connections, snap hooks shall not be engaged:
(i) directly to webbing, rope or wire rope;
(ii) to each other;
(iii) to a Dee-ring to which another snap hook or other connector is attached;
(iv) to a horizontal lifeline; or
(v) to any object which is incompatibly shaped or dimensioned in relation to the snap hook such that unintentional disengagement could occur by the connected object being able to depress the snap hook keeper and release itself.
All Fall Protection snap hooks are not designed to hook back into each other. The possibility of accidental disengagement does exist, so we DO NOT recommend this practice. The Miller BackBiter™ snap hook is the only snap hook that is designed to attach back onto the webbing of a lanyard.
WIZARD
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Rank: Forum user
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To Whom It May Concern:
As stated in OSHA 1926.502, Subpart M, “Unless the snap hook is a locking type and designed for the following connections, snap hooks shall not be engaged (i) directly to webbing, rope or wire rope; (ii) to each other; (iii) to a D-ring to which another snap hook or other connector is attached; (iv) to a horizontal lifeline; or (v) to any object which is incompatibly shaped or dimensioned in relation to the snap hook such that unintentional disengagement could occur by the connected object being able to depress the snap hook keeper and release itself”. Fall Protection does not recommend snapping two snap hooks from two separate shock-absorbing lanyards into the same back D-ring. The shock-absorbing lanyards could become tangled and cause accidental disengagement. We do however, recommend the use of a double-legged lanyard when practicing 100% tie-off.
I think my question is partly answered but not as I expected.
Regards
Wizard
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Rank: Super forum user
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If two shock absorbers are used - either the deceleration force will be twice as high (not good).. Or... the shock absorbers may not extend because there is insufficient force on each one... so the faller will be brought to an abrupt halt (no shock absorbing deceleration), and the harness could seriously injure the wearer. Just like falling without the shock absorber at all. Twin tail (for me) means a 'Y' configuration - not a 'll' configuration. Plus - see:- http://www.hse.gov.uk/press/2004/e04168.htmFor a warning from HSE some time ago about how NOT to reattach the second lanyard when not in use. Steve
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Rank: Forum user
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Gents,
Trust Gerry with a "G" is male,
Thanks for the replies, Steve, I tend to agree with you and thanks for the HSE lead.
I am reasonably happy to defend the non use of two single shock absorber lanyards from the same D RING.
Regards
Wizard
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Rank: Super forum user
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wizard wrote:Frankc,
Maybe I wrote it badly.
One full body harness, two independent single lanyards each with their own independent shock absorber both connected to the "D" ring and used as a double lanyard for 100% tie off application?
As opposed to a double lanyard connected to one shock absorber.
Sorry for my late reply on this matter. Would you mind if i ask what the actual job entails where someone is using two independant lanyards and where they connect them to on their harness (which 'D' ring)
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