23
MAERSK INSPIRER MAERSK INSPIRER WELCOME WELCOME • Per Frederiksen • Towmaster • Instructor, Maersk Training Centre • Captain, Maersk Supply USE OF FALL PROTECTION USE OF FALL PROTECTION

Use of Harness

  • Upload
    vfq3481

  • View
    228

  • Download
    1

Embed Size (px)

DESCRIPTION

HSE - Use of Harness

Citation preview

  • 5/18/2018 Use of Harness

    1/23

    MAERSK INSPIRERMAERSK INSPIRER

    WELCOMEWELCOME

    Per Frederiksen

    Towmaster

    Instructor, Maersk Training Centre Captain, Maersk Supply

    USE OF FALL PROTECTIONUSE OF FALL PROTECTION

  • 5/18/2018 Use of Harness

    2/23

    MAERSK INSPIRERMAERSK INSPIRER

    USE OF FALL PROTECTIONUSE OF FALL PROTECTION

    OBJECTIVE! Time out for safety

    Corret use Better "o#$e%&e

    Better u"%ersta"%i"& 'et ri% of (a% ) u"safe *a(its

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    3/23

    MAERSK INSPIRERMAERSK INSPIRER

    RESTRAINT GUIDANCE

    What is restraint? Working in restraint allows an operative the access and

    mobility required to reach the leading edge (potentialfall hazard) and carry out their tasks whilst preventingthem from potentially falling.

    Restraint vs. Fall Arrest The most fundamental difference between the two

    methods of work is the fall potential. estraint! when used correctly! prevents the fall

    occurring. "all arrest allows the operative to fall and then #arrests#this fall.

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    4/23MAERSK INSPIRERMAERSK INSPIRER

    RESTRAINT LIFELINE GUIDANCE

    Restraint vs. Fall Arrest

    Worin! in restraintsignificantly reduces the risk offalling and therefore all the issues related to fall hazards$

    "ei!ht #learan#e an$ %ro$t i'%li#ations (withrestraint! height clearance is not an issue as there is no fall

    to deal with. The problem with using fall arrest equipmentis the clear height required to operate.

    A fall arrest lanyard clipped at foot level requires up to6.75m to operate safely.

    Sho# a)sor)in! lan*ar$srequiring their ultimate length

    to operate. %f a fall is interrupted by hitting the lowersurface during the shock absorbing process! the force stillleft in the system! between &' and k*! is directedstraight in to the spine with potentially fatal effects.

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    5/23MAERSK INSPIRERMAERSK INSPIRER

    RESTRAINT LIFELINE GUIDANCE

    Restraint vs. Fall Arrest

    S%e#ial #onsi$erationshould also be givenwhere a lanyard is to be used in a situationwhere it could pass over an edge during a fall!

    There are no legal requirements for lanyards tobe tested passing over an edge+ they aredesigned to fall into free space.,s a result! thema-ority of lanyards! particularly flat webbing!are not capable of withstanding the increasedforces created by the acute angle as thelanyard passes over the edge.

  • 5/18/2018 Use of Harness

    6/23

    MAERSK INSPIRERMAERSK INSPIRER

    RESTRAINT LIFELINE GUIDANCE

    S&s%ension Tra&'a

    S&s%ension tra&'a ( This is the resulting medical conditionfollowing harness suspension. uring suspension blood cannotbe effectively pumped from the legs! resulting in pooling,whichreduces the amount of blood in circulation. The brain detectslower o/ygen levels and increases the heart and breathing rate!pumping more blood into the legs. 0/ygen levels reduce further

    and so the brain causes the body to faint e/pecting it to fall over!hence restoring the blood supply to the brain. Pro)le' (the body is suspended in a harness. ,s a result the

    brain has no further supply of o/ygen and this person is at risk ofimminent death. This can occur within &' minutes of a fall andbears no relation to a persons level of fitness.

    TIP (1y encouraging a person to move their legs duringsuspension! circulation is maintained and risk of suspensiontrauma is dramatically reduced.

  • 5/18/2018 Use of Harness

    7/23

    MAERSK INSPIRERMAERSK INSPIRER

    RESTRAINT LIFELINE GUIDANCE

    E++e#tive Res#&e , First Ai$

    Res#&e %rovision an$ 'etho$ state'ents (Whenusing fall arrest equipment on site! the contractor hasto provide a suitable method statement detailingrescue provision.

    -&i# e++e#tive res#&eis essential to reduce theeffects of suspension trauma. 2ven if the victimsurvives suspension! the build up of to/ins in the bloodcan cause instant heart failure on release or kidneyfailure a few days later.

    TIP (By sitting a person upright for at least 3 minutesduring rescue allows the to/ic blood to slowly release.3aying them down for as little as ' seconds can killthem.

  • 5/18/2018 Use of Harness

    8/23

    MAERSK INSPIRERMAERSK INSPIRER

    RESTRAINT GUIDANCE

    T*%es o+ Restraint

    / 'ain t*%esof horizontal restraint sites$

    Fi0e$ len!th restraint (, lanyard of a specific length

    preventing access beyond the fall hazard.

    R&nnin! line restraint (, horizontal lifeline used with

    personal ad-ustable restraint 4 ensuring the anchorageremains directly behind the operative preventing

    pendulum.

    A$1&sta)le restraint (, line with mechanical ad-ustment

    allowing the operative to personally ad-ust theirequipment 4 for packages where edge e/posure is not a

    constant distance from the anchorage.

  • 5/18/2018 Use of Harness

    9/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    "ARNESS

    Corre#t a$1&st'ent (a loosely worn harness offers noprotection. ,ll harnesses are designed to dissipate fall arrestforces into the largest muscle group! the thigh muscles. %f wornloosely! the harness straps will ride up and transfer this harmfulforce into the base of the spine causing rectal bleeding andspinal damage. 2qually! there is a very high possibility that theoperative will fall out of the side of a loose harness during a fall.The ideal tension in a harness is 5! finger tight.i.e. when youcan get fingers between their body and the harness straps.

    Le! Stra% Sli$ers (always ensure that at least one of theplastic sliders on the leg straps is slid up to the leg buckle. This

    prevents the leg strap slipping through the buckle during a fall.Without it the operative can either fall out of the harness or!given enough free fall! incur spinal damage.

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    10/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    LAN3ARDS

    Restraint Lan*ar$s (the lanyard must be correctly ad-usted or ofthe correct length to ensure the operative cannot reach the fallhazard.

    Fall Arrest Lan*ar$s4 An#hora!e (capable of holding min. & ton. "all arrest lanyards

    should ideally be anchored above the operatives head. They are

    designed to fall into free space and should not pass over an edge. "ei!ht #learan#e (there must be sufficient height to allow the fall

    arrest equipment to operate. , shock absorbing lanyard willprovide no protection if this height clearance is not available."#anyard length$%eight clearance from anchorage level&

    "A'ove head( !$5 m. )houlder( !$5.75 m. *oot( !$6.75 m.&

    We))in! Da'a!e ( any minor cuts or abrasion to the selvedgeknitted edge could result in failure of the webbing during a fall. %fwelding or grinding! the operative must use a steel lanyard. Theyare not sub-ect to 67 degradation or surface burns.

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    11/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    When &sin! inertia reels the t5o 'ost#o''on areas o+ 'is&se are4

    Ina%%ro%riate An#hora!e (Where the userhas incorrectly anchored the inertia reel as

    shown at the following pictures. In#orre#t Metho$olo!* ( When operatives are

    unaware how to use the equipment correctlythrough lack of training. The equipment is

    positioned in such a way that it is providing *0protection.

  • 5/18/2018 Use of Harness

    12/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    An#hora!e (capable of holding minimum & ton.%nertia reels should be anchored above the operativeshead or directly behind the operative. ,lways useproprietary slingsto connect to the structurepreventing! karabiner -ump! lock and roll out.

    Metho$olo!* (if used at foot level! appropriaterigging and methodology is crucial to eliminate theeffects of pendulum. 6sing & inertia reel provides safeaccess directly in front of the anchorage! workingdiagonally from the anchorage allows the operative to

    pendulum and hit the lower floor. %nertia reels willprovide protection on up to leading edges whenappropriately rigged.

  • 5/18/2018 Use of Harness

    13/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    E0a'%les o+ )a$ %ra#ti#e &sin! inertia reels

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    14/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    MAERSK INSPIRERMAERSK INSPIRER

    E0a'%le o+ )a$ %ra#ti#e &sin! inertia reels

  • 5/18/2018 Use of Harness

    15/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    Goo$ %ra#ti#e &sin! 6 inertia reels7

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    16/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    MAERSK INSPIRERMAERSK INSPIRER

    Goo$ %ra#ti#e &sin! 6 inertia reels7

  • 5/18/2018 Use of Harness

    17/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    Goo$ %ra#ti#e &sin! 8 inertia reel7

    MAERSK INSPIRERMAERSK INSPIRER

  • 5/18/2018 Use of Harness

    18/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    INERTIA REELS GUIDANCE

    Resonan#e 9 Rat#hetin! +-use an inertia reelon a life line or attached to a harness via a shockabsorbing lanyard. uring a fall! vibration caused bythe shock absorber tearing open will travel through thesystem and into the pawl springs. When this vibrationreaches the resonant frequency of the springs it couldcause the braking mechanism to fail! resulting in theuser hitting the lower floor. /onnecting to a hori0ontallifeline 1ill have the same affect.

  • 5/18/2018 Use of Harness

    19/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    ANC"2RAGE GUIDANCE

    An#hora!e (0ne of the biggest problems in providing

    fall protection is the provision of suitable! adequate

    anchorage. "all arrest equipment requires a temporary

    anchorage rated to & ton whilst the anchorage for

    restraint equipment can be as little as the weight of theuser! typically &''kg. 2f there is a 4 chance of a fall,

    then a fall arrest anchorage must 'e provided.

    User #o'+ort (estraint greatly reduces the load

    (pull) applied to the operatives body compared tousing an inertia reel (block).

  • 5/18/2018 Use of Harness

    20/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    ANC"2RAGE GUIDANCE

    Kara)iners4 ensure that karabiners arescrewed up and never attach them directly toreinforcement or structural steel. ,lways use

    proprietary slingsto connect to the structurepreventing! karabiner -ump! lock and roll out.

    Slin!s4 slings must be proprietary! dynamicslings to 2*89:b and rated to a minimum of

    tons allowing for the reduction in strength dueto choking etc.

  • 5/18/2018 Use of Harness

    21/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    ANC"2RAGE GUIDANCE

    The *o.& mistake is ;0**2;T0 0?%*@ the connector.

    This generally involves putting the connector in

    bending across its minor a/is or gate. ,ll connectorsare designed and tested to be loaded in tension + on astraight pull $ load .

    , typical ara)inerwill take :k* in tension but onlyk* in bending across the gate. 0n average! Ak* will

    be generated through the karabiner in a fall.

  • 5/18/2018 Use of Harness

    22/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    ANC"2RAGE GUIDANCE

    E0a'%les o+ )a$ #onne#tor 'is&se , $&rin! a +all:B the lanyard tightens

    around the anchorage!

    and puts the connector in

    bending across its gate.

    This will cause directionalload failure.

    B the scaffold hook will be

    loaded across its gatecausing directional load

    failure.

  • 5/18/2018 Use of Harness

    23/23

    MAERSK INSPIRERMAERSK INSPIRER

    S&%ervisors Site 2)servation G&i$an#e

    ANC"2RAGE GUIDANCE

    IMP2RTANT4 3ifting slings are not designed or

    tested to be used as fall arrest slings. , lifting

    sling is designed and tested for a static load. The

    law is very clear! ,33 fall arrest slings must be

    tested to 2*89:b. (