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Isubu Idaduro ijanu Ibalẹjẹ ati Igbala Oṣiṣẹ Igun Giga Giga

Awọn nọmba pajawiri yato nipasẹ orilẹ-ede. Oju-iwe yii nlo 911, nọmba fun Amẹrika ati Kanada. Ọpọlọpọ awọn orilẹ-ede miiran lo 112, 999, tabi nọmba miiran. Wa nọmba fun orilẹ-ede rẹ.

Awọn eto imuni isubu ti ara ẹni ati awọn aaye-mimu ti o daduro fun igba meji-meji ti daduro fun igbasẹ-saffolds fipamọ ẹgbẹẹgbẹrun ti awọn afọ window iṣowo, awọn oluṣọ ile-iṣọ, awọn oluyaworan afara, awọn oṣiṣẹ irin, ati awọn atupa lati awọn ipa ilẹ apaniyan ni gbogbo ọdun. Sibẹsibẹ yege isubu ibẹrẹ jẹ idaji pajawiri nikan. Lẹsẹkẹsẹ ti isubu oṣiṣẹ kan ni a mu nipasẹ D-ring lanyard dorsal, igbesi aye ti ara ẹni (SRL), tabi ijamu okun inaro ti ominira lẹhin opin kan ti pẹpẹ ipele wiwu ti motor ti lọ silẹ, iyara ati ti o lagbara ti apaniyan bẹrẹ ticking: ** ijanu idadoro ibalokanje ***, oogun ti a mọ si ** orthosud synspension.

Nigba ti eniyan ba duro ni inaro ati aisi iṣipopada ninu ijanu aabo ti ara ni kikun, iwuwo kikun ti torso wọn fa awọn okun itan ọra ti o ni wiwọ si oke sinu ikun ati igun abo abo, pinching awọn iṣan ti iṣan ati awọn iṣọn abo ti o jinlẹ lakoko ti awọn adagun omi walẹ to 40 ida ọgọrun ti iwọn ẹjẹ ti n kaakiri inu awọn ẹsẹ isalẹ. Nitoripe oṣiṣẹ ti n ṣọfọ ko ni ilẹ ti o lagbara labẹ awọn bata orunkun wọn, egungun ** fifa fifa iṣan malu *** ti o maa n fa ẹjẹ iṣọn nigbagbogbo pada si atrium ọtun ti ọkan lodi si agbara walẹ jẹ alaabo patapata. Ni ibamu si awọn United States Aabo ati Ilera ipinfunni (OSHA), awọn United Kingdom Health and Safety Alase (HSE), ati awọn National Institute for Occupational Safety and Health (NIOSH), a Osise ikele laišišẹ ni a ijanu le padanu aiji ni ** 5 to 15 iṣẹju ** ati ki o jiya apaniyan hypoxic cardiac arrest in ** 15 to 30 minutes in 30 minutes. Mọ bi o ṣe le mu awọn okun idamu ikọlu ikọlu laarin ọgbọn iṣẹju-aaya, bii o ṣe le mu lupu ẹsẹ kan lati oke, bawo ni a ṣe le ṣakoso atẹlẹsẹ ipele giga-giga ti o ga lai yapa awọn igbesi aye lori gilasi aṣọ-ikele ti o fọ, ati bi o ṣe le gbe oṣiṣẹ ti o gba igbala lori ilẹ gba awọn ẹmi là.

Ṣe eyi ni bayi

Ti iwọ tabi alabaṣiṣẹpọ kan ba wa ni ara korokunso ni ijanu imudani isubu lẹhin isubu, tabi ti o wa ni idamu lori atẹlẹsẹ fifọ window-ipele ti o kuna ni giga lori facade ile kan, ṣe awọn iṣe mẹfa wọnyi lẹsẹkẹsẹ:

  1. Deploy your hip-mounted suspension trauma relief straps within 30 seconds and stand up: Never hang limp with your legs dangling straight down. Unzip the two small trauma-strap pouches attached to your harness hip webbing, drop the two nylon lines down to your boots, hook them together at your feet to form a continuous stirrup loop, and step both feet into the loop to stand upright. Standing in the loop shifts your body weight off the constricting groin straps onto the soles of your boots and reactivates your leg muscles.
  2. If you do not have trauma relief straps, pump your legs continuously and push against the wall: Never allow your legs to hang still. Pedal your legs vigorously like riding a bicycle, push your boots repeatedly against the building facade or structural steel column to flex your calf muscles, and hook your thumbs under the groin webbing to lift pressure off your inner thighs while raising your knees toward your chest every few seconds.
  3. Call emergency services and activate the site Fall Rescue Plan immediately: Have a coworker or building security call your local pajawiri awọn nọmba (911 in the United States and Canada, 112 across the European Union, 999 in the United Kingdom) and request the High-Angle Rope Rescue Team. OSHA and HSE regulations require a prompt rescue target of under 6 to 10 minutes for any suspended worker before orthostatic syncope sets in.
  4. Lower an improvised foot-loop rope from above if the worker cannot reach their own straps: If a conscious worker is hanging below a roof parapet, bridge deck, or catwalk without relief straps, tie a secure loop (a bowline or figure-eight on a bight) in the end of a sturdy utility rope, anchor the top end to a rated structural tie-off point, and drop the loop down to the worker's feet so they can step into it and stand up while awaiting a mechanical lower or aerial lift pick-off.
  5. NEVER unclip a stranded swing-stage worker's vertical lifeline until they are completely inside the building or rescue basket: If one hoist motor or wire rope fails on a suspended window-washing stage, leaving the aluminum platform hanging vertically at 45 to 90 degrees, the worker's independent vertical nylon lifeline and rope-grab device are the only barriers preventing a fatal plunge if the remaining wire rope snaps. Never breach a glass window directly above a tensioned nylon lifeline, or falling tempered glass cubes and jagged laminated shards will sever the rope.
  6. Unbuckle all tight harness leg straps immediately upon reaching the ground and lay an unconscious or hypotensive victim flat: Once the worker is lowered to a safe surface, immediately loosen or cut the constricting thigh straps. Follow current HSE and Wilderness Medical Society trauma guidelines: lay an unconscious, pulseless, or shocky worker flat on their back (supine) to restore cerebral blood flow and begin CPR ti wọn ko ba dahun ati pe wọn ko simi ni deede.

Why an unconscious worker hanging by a dorsal D-ring dies in minutes

As long as a suspended worker remains conscious, they can pedal their legs, shift their hips, and hold their head upright. The moment cerebral hypoxia causes the worker to faint (syncope) while hanging from a dorsal (back) D-ring, two fatal mechanisms accelerate simultaneously: first, all leg muscle movement ceases completely, trapping massive volumes of blood in the legs and collapsing cardiac output; second, the unconscious worker's head and upper torso slump forward against the chest harness strap, kinking the trachea and causing positional airway asphyxiation. An unconscious suspended worker must be lowered or picked off within 3 to 5 minutes to survive.

Tactical decision tree for harness suspension and swing-stage emergencies

Use this operational decision tree to coordinate immediate self-rescue, assisted relief-loop deployment, high-rise swing-stage stabilization, and post-rescue medical triage.

flowchart TD
    Start["Worker Suspended in Harness or Stranded on High-Angle Swing Stage"] --> Scenario{"1. What is the worker's suspension status?"}
    Scenario -->|"A. Hanging Free in Fall Arrest Harness"| ConsciousCheck{"Is the suspended worker conscious?"}
    ConsciousCheck -->|"Yes: Conscious & Responsive"| DeployStraps["1. Worker unzips hip trauma straps, hooks loop, stands up, and pumps legs<br/>2. If no straps: Coworkers lower anchored rope loop to worker's feet"]
    DeployStraps --> FastPickoff["Execute Mechanical Lower (Descent Control Device) or Aerial Lift Pick-Off within 10 Minutes"]
    ConsciousCheck -->|"No: Unconscious / Motionless"| CodeRed["LIFE-OR-DEATH EMERGENCY: Execute immediate mechanical lower or ladder/boom pick-off within 3 to 5 minutes"]
    Scenario -->|"B. Stranded on Tilted / Failed Swing-Stage Scaffold"| StageRules["1. Keep independent vertical lifeline and rope grab clipped at all times<br/>2. Cut power to runaway hoist motor; engage secondary wire brake"]
    StageRules --> WindHazard{"Are high winds slamming stage or worker into glass facade?"}
    WindHazard -->|"Yes: High Wind / Glass Hazard"| WindowEntry["Do NOT break window directly above nylon lifeline; breach adjacent window to the side or above rope-grab only after belaying worker"]
    WindHazard -->|"No: Stable Facade"| RoofLower["Wait for Fire Dept Roof Rope Rescue or controlled self-lower via hoist manual brake release"]
    FastPickoff --> GroundCare["Post-Rescue Medical Care: Unbuckle leg straps immediately; lay flat (supine) if unconscious or shocky; monitor for rhabdomyolysis"]
    CodeRed --> GroundCare
    WindowEntry --> GroundCare
    RoofLower --> GroundCare

Comparison matrix: harness suspension trauma timeline and physiological stages

Understanding the minute-by-minute cardiovascular cascade inside a vertically suspended human body explains why standing in a foot loop is a non-negotiable survival priority.

Time Suspended Motionless Hemodynamic & Venous Changes Neurological & Clinical Signs Immediate Survival Action Required
0 to 3 Minutes (Phase 1: Femoral Vein Pinch) Full body weight pulls 45-millimeter (1.75-inch) nylon thigh straps into the femoral triangle of the groin; external compression collapses the low-pressure femoral veins while high-pressure femoral arteries continue pumping blood down into the legs. Sharp pinching pain in the groin and inner thighs; early warmth or fullness in the calves; mild anxiety. Unzip and deploy trauma relief foot straps immediately; step into the loop and transfer weight from the groin to the soles of the boots.
3 to 10 Minutes (Phase 2: Venous Pooling & Preload Drop) Pẹlu egungun ** fifa fifa iṣan ọmọ malu ** aiṣiṣẹ ati ipadabọ abo abo, ** 20 si 40 ida ọgọrun ti iwọn ẹjẹ ti n kaakiri ** (1 si 2 liters) awọn adagun inu awọn ohun elo agbara ti awọn ẹsẹ; ipadabọ iṣọn-ẹjẹ si atrium ọtun plummets, nfa iwọn ọpọlọ ọpọlọ ati iṣelọpọ ọkan lati silẹ. Tingling, awọn pinni-ati-abere (paresthesia), ati numbness ninu awọn ẹsẹ ati awọn ẹsẹ; bia, tutu, awọ ara gbigbo; profuse sweating; dizziness, lightheadedness, ati ríru. ** Duro ni lupu ẹsẹ tabi sokale okun aruwo **; ti ko ba si lupu ti o wa, awọn ẹsẹ ẹsẹ ni agbara, ti awọn bata orunkun si odi ti o wa nitosi, ki o fa awọn ekun si àyà.
** Iṣẹju 10 si 20 (Ipele 3: Bezold-Jarisch Reflex & Syncope)** Ti ko kun, ti o ni agbara ti o ni adehun ventricle osi ti o nfa awọn mechanoreceptors paradoxical (awọn **Bezold-Jarisch vagal reflex ), nfa idinku lojiji ni oṣuwọn ọkan ( bradycardia **) ati vasodilation lori oke hypovolemia ti o lagbara; titẹ perfusion cerebral ṣubu ni isalẹ iloro pataki. Ohun orin ipe ni eti (tinnitus), grẹy jade tabi oju oju eefin, iporuru, slured ọrọ, atẹle nipa ** pipadanu aiji ti aiji (orthostatic syncope)**; ara lọ rọ ni ijanu. * Ṣiṣe pipa pajawiri tabi gbigbe eriali lẹsẹkẹsẹ ***; ni kete ti ko mọ, oṣiṣẹ ko le fa awọn ẹsẹ wọn soke ati pe ọpọlọ hypoxia nyara ni iyara.
** Awọn iṣẹju 15 si 30+ (Ipele 4: Idaduro Hypoxic & Rhabdomyolysis)** Odo sisan ẹjẹ cerebral lodi si walẹ ni idapo pelu o pọju air ọna kinking lodi si awọn àyà okun; aiduro, ẹjẹ deoxygenated ninu awọn ẹsẹ ti a fọ ​​n ṣajọpọ lactic acid, potasiomu (** hyperkalemia ***), ati myoglobin lati idinku iṣan ischemic. Koma ti o jinlẹ, ikunsinu agonal tabi apnea, iṣẹ itanna pulseless (PEA) tabi asystole (** imudani ọkan ọkan**). **Ṣe isale ilẹ lẹsẹkẹsẹ, yọ awọn okun ijanu, dubulẹ (supine), ki o bẹrẹ didara ga CPR ati AED resuscitation.

Dive jin 1: Bii o ṣe le ṣe idiwọ ibalokan idadoro lakoko ti o sorọ ni ijanu kan

Boya o jẹ arborist, onimọ-ẹrọ ile-iṣọ tẹlifoonu kan, rigger ile itage, orule ile-iṣẹ kan, tabi olutọpa window, ja bo sinu ijanu rẹ nilo iṣe ti ara lẹsẹkẹsẹ lakoko awọn aaya ọgọta akọkọ lakoko ti awọn ẹsẹ rẹ tun ni agbara iṣan ni kikun ati oxygenation.

Ọna 1: Gbigbe awọn okun iderun ibalokanjẹ ti a fi sori ẹrọ ile-iṣẹ

O fẹrẹ jẹ pe gbogbo awọn ohun ija kikun ti ode oni ti o ni ibamu pẹlu ANSI/ASSP Z359.11 (Amẹrika), CSA Z259.10 (Canada), ati EN 361 (European Union / United Kingdom) ti ni ipese pẹlu ** agekuru kekere meji tabi awọn apo kekere ti a ṣepọ *** ti a gbe si apa osi ati ọtún ibadi webbing kan loke itan.

   [Dorsal D-Ring Connected to Lanyard/SRL]
               |
         +-----+-----+
         |  Worker   |
         |  Torso    |
         +--+-----+--+
   [Hip Pouch]   [Hip Pouch]  <-- 1. Unzip both pouches on hips
         |           |
         |           |        <-- 2. Drop left & right nylon straps
         +-----+-----+        <-- 3. Hook metal buckle together at feet
         | [Boots]   |        <-- 4. Step in and STAND UP STRAIGHT
         +-----------+
  1. ** Wa ki o si tú awọn apo ibadi mejeeji ***: De isalẹ si apa osi ati awọn egungun ibadi ọtun, fa awọn taabu hihan giga lati ṣii awọn apo idalẹnu mejeeji, ki o jẹ ki awọn okun webi ọra ọra ti o so pọ silẹ kọja awọn ẽkun rẹ.
  2. ** So awọn okun meji pọ ni ipele kokosẹ ***: Okun kan ni lẹsẹsẹ ti awọn losiwajulosehin wẹẹbu ti a ran (tabi adijositabulu kamẹra kan) ati okun miiran ni kio irin tabi agekuru carabiner. Tẹ awọn ẽkun rẹ diẹ sii lati mu awọn opin wa ni arọwọto, ki o si fi irin agekuru irin sinu lupu ti o baamu gigun ẹsẹ rẹ (ni isalẹ awọn atẹlẹsẹ bata rẹ nigbati awọn ẹsẹ rẹ ba tẹ awọn iwọn 15).
  3. ** Igbesẹ ọkan tabi awọn bata orunkun mejeeji sinu lupu aruwo ki o si dide duro ***: Gbe awọn arches ti awọn bata orunkun rẹ sori lupu ti a ti sopọ ki o tẹ taara si isalẹ pẹlu awọn quadriceps ati awọn ọmọ malu titi awọn ẹsẹ rẹ yoo fi tọ.
  4. ** Kini iduro ti o ṣaṣeyọri ***: Dide soke fa iwọn D-ẹhin diẹ sẹhin si ẹhin rẹ ati ** gbe ikun rẹ soke patapata kuro ni awọn okun itan ọra ti o nipọn ***, lẹsẹkẹsẹ tun ṣii awọn iṣọn abo ti o pin. Ni igbakanna, iwọntunwọnsi ati yiyi iwuwo lati ẹsẹ osi si ẹsẹ ọtún rẹ ina fifa iṣan ọmọ malu, ti n wa ẹjẹ iṣọn idẹkùn pada sinu ọkan ati ọpọlọ rẹ.
  5. Tẹsiwaju ni gbigbe ni gbogbo iṣẹju mẹwa 10 ***: Paapaa lakoko ti o duro ni okun ibalokanjẹ, maṣe tii awọn ẽkun rẹ lainidi. Yi iwuwo rẹ pada lati ẹsẹ si ẹsẹ, gbe igigirisẹ soke lori okun, ki o si rọ itan rẹ nigbagbogbo titi awọn olugbala yoo fi mu ọ sọkalẹ.

Ọna 2: Ilọrun ara ẹni ti o ni ilọsiwaju ati iranlọwọ rope-loop alabaṣiṣẹpọ (Nigbati ko si awọn okun ibalokanjẹ tẹlẹ)

Ti oṣiṣẹ kan ba ṣubu lakoko ti o wọ ohun ijanu ọrọ-aje agbalagba ti ko ni awọn okun iderun ibalokan ti ibadi, lo awọn ilana gigun mẹrin wọnyi lati ṣe idiwọ mọnamọna orthostatic:

  1. ** Alabaṣiṣẹpọ ju okun ti ẹsẹ-pasẹ silẹ lati oke ***:
  2. Awọn alabaṣiṣẹpọ ti o wa lori orule, deki scaffold, tabi afara afara loke yẹ ki o mu eyikeyi okun ohun elo ti o ni iwọn, laini taagi, tabi igbesi aye apoju.
  3. Di **Ọya-Mẹjọ lori Bight *** tabi ** lupu Bowline kan *** bii ọgbọn sẹntimita (inṣi 12) fife ni opin isalẹ ti okun naa.
  4. Sokale lupu si ipele ti awọn ẹsẹ oṣiṣẹ ti o daduro ki o di kuro tabi sọ opin oke ni aabo ni aabo ni ayika tan ina igbekalẹ tabi aaye oran ki o maṣe yọ kuro nigbati o ba wọn.
  5. Osise ti o daduro gbe awọn bata orunkun mejeeji sinu lupu okun ti a ti sọ silẹ o si dide duro lati yọkuro titẹ ikun.
  6. ** Titari si odi ti o wa nitosi, ọwọn, tabi girder ***: Ti oṣiṣẹ ba wa ni adiye laarin awọn mita 1 (ẹsẹ 3) ti ogiri ile kan, ohun elo kọnkan, tabi truss irin, wọn yẹ ki wọn gbin awọn bata orunkun mejeeji ni iduroṣinṣin si odi inaro ki wọn si ti ibadi wọn sẹhin leralera, tabi kii igigirisẹ bata wọn si ori atẹlẹsẹ igbekalẹ kan lati mu ikangun ti ferese.
  7. ** Rọra okun àyà petele si isalẹ lẹhin awọn ẽkun (Ọna ijoko pajawiri) ***: Ti oṣiṣẹ ba ni arọwọto ara oke ati lanyard apoju, sling, tabi beliti ti o wuwo lori beliti irinṣẹ wọn, wọn le ge lupu kan laarin ipo ẹgbẹ mejeeji D-oruka (tabi webbing ibadi) ki o rọra lupu naa si isalẹ labẹ awọn ibadi wọn tabi lẹhin awọn ẽkun wọn lati gbe ijoko itan wọn soke.
  8. **Atampako ati ẹlẹsẹ ẹlẹsẹ-kẹkẹ ***: Ti o ba wa ni adiye ni afẹfẹ ti o ṣii patapata labẹ isunmọ pẹlu awọn okun odo ati awọn okun odo, kio awọn atampako mejeeji labẹ awọn okun itan ti o ni ihamọ ni ikun ikun, Titari si isalẹ pẹlu awọn apa rẹ lakoko ti o nfa awọn ẽkun rẹ soke si àyà rẹ fun iṣẹju mẹwa 10 ni iṣẹju kọọkan, ki o si gbe ẹsẹ rẹ lọ siwaju nigbagbogbo.

Dive jin 2: Ipele swing-giga (saffold ti daduro) awọn ikuna ati awọn igbala afẹfẹ giga

Awọn ifoso ferese, awọn ẹgbẹ imupadabọ mimu-pada sipo, ati awọn glaziers ogiri-aṣọ n ṣiṣẹ ni awọn giga giga lati ** awọn scaffolds ti daduro aaye meji (awọn ipele wiwu) *** ti a fikọ nipasẹ awọn okun waya meji lati awọn opo oke oke tabi awọn davits. Awọn pajawiri ipele-swing waye nipasẹ awọn ọna akọkọ mẹta:

  1. ** Ikuna-ọkan tabi okun waya-okun (Awọn 45-to-90-Degree Platform Tilt)**: Nigba ti ọkan ina traction hoist motor awọn gears awọn oniwe-gia, padanu awọn oniwe-jc ati overspeed idaduro, tabi shears a waya okun nigba ti idakeji hoist Oun ni ṣinṣin, ọkan opin ti awọn 6-to-10-mita (20-to-vertically) aluminiomu ju silẹ. Awọn irinṣẹ, awọn garawa omi, ati awọn ohun elo ti a ko tẹ silẹ rọra si isalẹ deki ti o tẹ bi chute kan, lakoko ti a ti ju awọn oṣiṣẹ jade kuro ni ipele ti wọn si mu nipasẹ ** awọn ọna igbesi aye inaro ominira wọn ** ati awọn imunija-kijiya isubu.
  2. ** Awọn iwaju gust ãrá lojiji ati igun ile-igun Venturi ***: Awọn ile-iṣọ gilaasi giga n yara afẹfẹ ni ayika awọn igun wọn ati isalẹ awọn oju-ọna wọn ni awọn iyara 2 si awọn akoko 3 ti o ga ju awọn kika ipele-ita lọ. Nigba ti ijakadi lojiji tabi 60-kilometer-per-hour (37-mile-per-hour) afẹfẹ afẹfẹ kọlu ipele gbigbọn ti a ko ti sopọ, pẹpẹ naa n yi jade bi pendulum nla ti n fọ, ti n yi lori awọn okun waya rẹ ti o si tun pada sinu ogiri gilasi gilasi pẹlu agbara ti o to lati fọ awọn oniṣẹ ẹrọ ti o wuwo pẹlu gilasi meji-pane.
  3. ** Ikuna agbara tabi hoist motor jam aarin-facade ***: Ipele naa wa ni ipele ati pe o wa ni ipilẹ, ṣugbọn ina tabi awọn mọto pneumatic gba awọn itan 30 loke opopona laisi iraye si balikoni.

Awọn ofin iwalaaye fun awọn oṣiṣẹ ti o duro lori ipele ti kuna tabi lilọ

Ipo pajawiri-Ipele Lominu ni Osise Action Ohun ti Ilé Enginners & Rescuers kò gbọdọ ṣe
**1. Ipari kan ti ipele naa ṣubu (Petform ti o rọ ni inaro tabi ni igun giga) *** MASE yọ okun rẹ kuro lati inu igbesi aye ọra inaro ominira rẹ. Ti ẹsẹ rẹ ba tun le duro lori ẹṣọ aluminiomu ti o tẹ tabi ika ẹsẹ ti ipele ikele, lo ipele ipele bi ibi-itẹtẹ lati jẹ ki iwuwo kuro ni awọn okun ọra ijanu rẹ lakoko ti o ku 100 ogorun gige si laini inaro rẹ. Ma ṣe gbiyanju lati fa ipele aluminiomu ti o ni 400-kilogram (900-pound) ni ẹgbẹ ẹgbẹ nipasẹ ferese ti o fọ *** ṣaaju ki o to yapa ati aabo awọn oṣiṣẹ naa si awọn laini igbala ti ina-ominira; ti o ba ti awọn ti o ku orule outrigger yo, awọn ja bo ipele yoo fa ẹnikẹni dani o jade ni ferese.
**2. Awọn ẹfufu nla n lu ipele naa kuro ati pada si ile giga gilaasi *** Ju silẹ si itẹ kekere kan ninu ilẹ ipele laarin awọn ọna ẹṣọ (nitorinaa a ko fi ọ silẹ lori iṣinipopada oke lori ipa); agekuru a kukuru aye lanyard si awọn ipele stirrup nikan ti o ba jc re jc re isubu-imudani lanyard duro clipped si ominira inaro orule lifeline; jabọ jade a afamora-ago amuduro tabi di a tag laini to a mullion lug ti o ba wa ni arọwọto. ** MASE adehun kan gilasi-aṣọ-odi ferese taara loke a Osise tabi loke wọn tensioned ọra lifeline.** Nigbati a 162-megapascal (24,000-psi) tensioned okun sintetiki rubs kọja a jagged baje window fireemu tabi ti wa ni lù nipa ja bo laminated gilasi sheets, awọn kijiya ti shears bi bota labẹ ẹrù.
**3. Moto hoist padanu agbara itanna ni ọjọ idakẹjẹ (Ipele jẹ ipele) *** Maṣe bẹru ati ma ṣe gbiyanju lati gun oke okun waya inaro tabi ọra lifeline ọwọ-lori-ọwọ. Ti o ba ti ni ikẹkọ ati ti a fun ni aṣẹ, lo hoist's ** Afowoyi iṣakoso-isalẹ ṣẹ egungun itusilẹ lefa (ko si agbara sokale lefa)** lori awọn mọto mejeeji nigbakanna ni awọn afikun kekere lati tọju ipele dekini lakoko sisọ si ilẹ tabi orule ifẹhinti isalẹ. Maṣe so okun itẹsiwaju imudara lati inu ferese ọfiisi laisi ijẹrisi iyipo alakoso ati foliteji (208V/240V); phasing ti ko tọ le fa ọkan hoist motor lati wakọ UP nigba ti awọn miiran wakọ isalẹ, pulọgi si awọn ipele.

Bii awọn onija ina ṣe nṣiṣẹ igbala irufin window inu inu ailewu kan

Nigbati awọn afẹfẹ giga tabi giga ti o ga julọ jẹ ki sisọ ifoso ferense kan si opopona ko ṣee ṣe, awọn ẹgbẹ Igbala Igun Giga ti ilu ṣe yiyan irufin window inu ile **:

  1. ** Yan ferese kan ti o wa nitosi tabi ni isalẹ ọna igbesi aye, rara taara loke rẹ ***: Awọn olugbala wọ ipele ipele ile pẹlu awọn oṣiṣẹ ti o ni ihamọ. Ti oṣiṣẹ naa ba wa ni adiye ni iwaju Ferese B, awọn olugbala n wo irufin ** Ferese A tabi Ferese C ** si ẹgbẹ, tabi ni awọn atukọ oke ti o fa / dinku oṣiṣẹ naa ni mita 1 (ẹsẹ 3) nitorinaa igbesi aye ẹdọfu wọn loke ijanu jẹ kedere patapata ti pane gilasi ti fọ.
  2. **Dimegilio, teepu, ati iṣakoso gilasi inu ***: Awọn ferese iṣowo ti o ga ni a ṣe ti gilaasi ti o ni igbona ti o nipọn tabi awọn ẹya iwọn otutu glazed ti o ni iwọn 100 si 250 kilo (220 si 550 poun). Awọn onija ina lo fiimu jamba alemora ti o wuwo tabi awọn grids-teepu kọja gilasi inu, awọn ago afamora to ni aabo si pane, ati ge tabi fọ pane ** sinu ilẹ ọfiisi *** nitorina awọn aṣọ gilasi ti o wuwo odo ṣubu si ita si awọn oṣiṣẹ tabi opopona ni isalẹ.
  3. ** Paadi window sill aluminiomu ati awọn mullions lẹsẹkẹsẹ ***: Lẹsẹkẹsẹ ti gilasi naa ti yọ kuro, awọn onija ina fi ipari si awọn paadi eti kanfasi ti o wuwo tabi pin awọn rollers ina-pipa lori fireemu window aluminiomu didan ṣaaju ki o to de lati gige okun belay keji si àyà oṣiṣẹ tabi dorsal D-iwọn.
  4. ** Gbigbe iwuwo ati ṣiṣi silẹ nikan nigbati o wa ninu ***: Nikan lẹhin ti oṣiṣẹ ti fa ni kikun si inu ilẹ ọfiisi ati ni ifipamo si oran ọwọn igbekalẹ inu inu ni igbesi aye oke oke ode wọn ti ṣi silẹ.

Dive jin 3: Awọn ọna igbala ti o ṣe iranlọwọ ni Jobsite (Gbigba oṣiṣẹ ti o rọ silẹ labẹ iṣẹju mẹwa 10)

Mejeeji OSHA (29 CFR 1926.502(d)(20)) ati UK HSE Work at Height Regulations ase ti awọn agbanisiṣẹ pese fun awọn "awọn oṣiṣẹ igbala ni kiakia ni iṣẹlẹ ti isubu" ati sọ pe gbigbe ara nikan lori pipe 911 / 999 laisi agbara igbala aaye lori aaye jẹ itẹwẹgba ti o ba jẹ pe awọn iṣẹju 2 ti ṣeto ina 5 lati gbe awọn iṣẹju 5 lati gba agbara igbala ti ilu. awọn àkàbà eriali, ati awọn okùn rig. Gbogbo aaye iṣẹ nibiti awọn oṣiṣẹ ti wọ awọn ohun ija imuni isubu gbọdọ ni ọkan ninu awọn eto iranlọwọ-igbala mẹta ti o ti ṣeto ati ti ṣetan:

1. Igbesoke ariwo eriali tabi gbigbe gbigbe scissor (ọna ti o yara ju lori aaye)

Ti pẹpẹ iṣẹ igbega alagbeka kan (igbesoke ariwo tabi gbigbe scissor) wa lori aaye iṣẹ: - Oniṣẹ oṣiṣẹ ti o peye n wakọ gbigbe nisalẹ oṣiṣẹ ti daduro, ni iṣọra lati ma ṣe mu irin tabi awọn laini agbara mu. - Olugbala ti o wa ninu garawa gbigbe wọ ihamọra isubu tiwọn lanyard ti a ge si aaye oran garawa. - Gbe pẹpẹ garawa lọra laiyara labẹ awọn bata orunkun ti oṣiṣẹ ti o fi ara korokun titi ti ẹsẹ oṣiṣẹ yoo fi sinmi ni iduroṣinṣin lori ilẹ garawa ati pe ẹdọfu naa lọ silẹ patapata ni lanyard isubu wọn. - *Yi kuro ni agbala ẹhin ti oṣiṣẹ nikan lẹhin iwuwo kikun wọn ti duro ni inu garawa gbigbe ti iṣọ ni iṣọ, yọ awọn okun ẹsẹ wọn ti o ni wiwọ lẹsẹkẹsẹ, ki o si gbe soke si ilẹ.

2. Ọpa igbala Telescopic ati ẹrọ winch / isosile latọna jijin

Nigbati oṣiṣẹ kan ba wa ni adiye ni isalẹ tan ina Afara irin, agbeko paipu, tabi eti oke nibiti ko si gbigbe eriali le de ọdọ: - Awọn olugbala lori dekini oke lo ** teliscopic fiberglass giga ọpá ** lati de isalẹ ki o si mu ami-isẹ-iṣaaju ** Igbala Hauling / Sokale System ** (eyiti o jẹ 3: 1 tabi 4: 1 anfani mekaniki Àkọsílẹ -ati-koju ti a so pọ pẹlu idaduro ijakadi adaṣe laifọwọyi) taara sinu D-ring dorsal ti oṣiṣẹ. - Awọn olugbala fa laini gbigbe fun iṣẹju-aaya 3 lati gbe oṣiṣẹ naa ni sẹntimita 15 (inṣi 6), ti o ṣẹda irẹwẹsi ninu agbala-mọnamọna ti oṣiṣẹ ti a fi ransẹ tabi laini gbigbe ara-ẹni (SRL). - Awọn olugbala yọọ kuro (tabi ge pẹlu kio igbala ti o ni aabo) lanyard ti a fi ranṣẹ, ati lẹsẹkẹsẹ lo isunmọ edekoyede lati sọ oṣiṣẹ naa silẹ laisiyonu si ilẹ ni 0.5 si 1 mita fun iṣẹju kan (1.5 si 3 ẹsẹ fun iṣẹju keji).

3. Igbala ibusun ibusun akaba (Fun giga-kekere ṣubu 2 si 5 mita / 6.5 si 16 ẹsẹ loke ilẹ)

Nigbati oṣiṣẹ kan ba ṣubu lati ile kekere, mezzanine, tabi truss orule ibugbe ati pe o kan sorọ 1 si awọn mita 3 (ẹsẹ 3 si 10) kuro ni ilẹ: - Awọn alabaṣiṣẹpọ meji gbe igbesẹ A-fireemu ti o wuwo tabi akaba itẹsiwaju taara lẹgbẹẹ oṣiṣẹ ikele. - Ọkan alabaṣiṣẹpọ ṣe àmúró ipilẹ akaba nigba ti ekeji n gun oke, ṣe itọsọna awọn bata orunkun ti oṣiṣẹ ti o fi ara korokun sori ipele akaba kan ki oṣiṣẹ naa le dide lẹsẹkẹsẹ ki o yọkuro titẹ iṣọn ọgbẹ, o si ṣe atilẹyin torso ti oṣiṣẹ lodi si awọn opopona akaba nigba ti alabaṣiṣẹpọ kẹta lori dekini oke tu silẹ tabi ge agbala ile ni kete ti iwuwo ba ti gbe ni kikun.

Dive jin 4: Itọju iṣoogun lẹhin igbala ati ariyanjiyan “iku iku”

Ohun ti o ṣe lakoko iṣẹju mẹwa akọkọ lẹhin ti oṣiṣẹ ti daduro de ilẹ jẹ pataki. Fun ewadun, awọn iwe afọwọkọ ailewu iṣẹ kaakiri awọn ilana ti o fi ori gbarawọn nipa boya lati dubulẹ olufaragba ijanu ti o gba silẹ alapin (supine) tabi gbe wọn duro ni pipe ni ijoko “ipo W”.

Kini oogun ti o da lori ẹri ode oni sọ (HSE RR708, Awujọ Iṣoogun Aginju, ati AHA)

Ni awọn ọdun 1970 ati awọn 1980, arosọ imọ-ọrọ kan jade lati inu iwe apejọ kekere kan ti o ni iyanju pe ti olufaragba idadoro ti o gba silẹ ti gbe lelẹ lori ẹhin wọn, ipadabọ ojiji ti tutu, acidotic, ẹjẹ ọlọrọ potasiomu lati awọn ẹsẹ yoo ṣe apọju ventricle ọtun ti ọkan ati fa “iku igbala” lẹsẹkẹsẹ (iku iku). Nitoribẹẹ, diẹ ninu awọn panini agbalagba sọ fun awọn olugbala lati ma gbe ohun ijanu kan silẹ rara, paapaa ti wọn ko ba mọ.

Ni 2009 ati awọn imudojuiwọn ti o tẹle, ** UK Health and Safety Alase (HSE Iwadi Iroyin RR708) *** ati Wilderness Medical Society (WMS) ṣe awọn atunyẹwo ile-iwosan ti gbogbo ọran ti eniyan ti o ni akọsilẹ ati iwadii iṣoogun lori ibalokanjẹ idadoro. Awọn awari wọn ṣe imudojuiwọn ni ipilẹṣẹ itọsọna iranlọwọ akọkọ agbaye:

  1. ** Mimu alaisan ti o daku tabi alaga ti o joko ni titọ le pa wọn ***: Nibẹ ni ** ẹri ile-iwosan odo ** pe gbigbe eniyan ti o daduro duro alapin fa ikuna iwọn iwọn ventricular ọtun. Lọna miiran, titọju aimọkan tabi alaisan alagagagaga ti o ṣe iṣeduro awọn iṣeduro ti o tọ pe walẹ n tẹsiwaju ebi npa ọpọlọ wọn ti atẹgun, nfa iku ọpọlọ hypoxic ti ko yipada ati idaduro ọkan ọkan.
  2. ** Atilẹyin Igbesi aye Ibalopọ Ilọsiwaju Ilọsiwaju (ATLS) ati awọn ilana ABC nigbagbogbo gba pataki ***:
  3. **Igbese 1 (Awọn okun ti a tu silẹ) ***: Yọọ lẹsẹkẹsẹ tabi ge awọn okun itan ijanu ti o ni wiwọ ki iṣan-ara abo ti jẹ atunṣe.
  4. ** Igbesẹ 2 (Ti aibalẹ, Aibikita, tabi Hypotensive) ***: Gbe alaisan naa silẹ ** filati si ẹhin wọn (orilẹ) *** lẹsẹkẹsẹ. Ṣii ọna atẹgun nipa lilo bakan-titẹ (ti a ba fura si ipalara ọpa-ẹhin lati isubu) tabi ori-tilt / chin- lift, ṣayẹwo fun mimi deede, ki o si bẹrẹ CPR ki o si so Defibrillator Ita Aifọwọyi kan (AED) ti wọn ba wa ni idaduro ọkan ọkan.
  5. ** Igbesẹ 3 (Ti o ba ni imọran ni kikun, Itaniji, ati Normotensive): Gba alaisan ti o ni imọran laaye lati sinmi ni pẹlẹbẹ lori ẹhin wọn tabi ni ipo ti o ni irọra ti o ni itunu (ti o ga diẹ si iwọn 15 si 30 ti wọn ba fẹ), jẹ ki wọn gbona pẹlu awọn ibora lati dena hypothermia, ki o si fi wọn lọkan balẹ.
  6. ** Igbeyewo ile-iwosan dandan fun Crush-Bi Rhabdomyolysis ati Hyperkalemia ***:
  7. Paapaa ti oṣiṣẹ kan ti o sorọ ni ijanu fun iṣẹju 15 ba ni itara daradara ni iṣẹju marun lẹhin ti o ti sọ silẹ lori ilẹ, ** wọn gbọdọ gbe lọ si ẹka pajawiri ile-iwosan fun iṣẹ ẹjẹ ati abojuto ECG.
  8. Iṣan abo abo gigun ati titẹkuro iṣọn-ẹjẹ fa ischemia iṣan ni awọn ẹsẹ ti o jọra si fifun pa ipalara ati iṣọn iyẹwu. Nigbati sisan ẹjẹ ba pada si awọn ẹsẹ, awọn okun iṣan ti o bajẹ tu silẹ **myoglobin *** (eyiti o di awọn tubules kidinrin ti o fa ikuna kidirin nla, yiyi ito dudu brown bi tii tabi kola) ati **potasiomu *** (eyiti o le fa idaduro arrhythmias ọkan ọkan). Awọn oniwosan ile-iwosan n ṣakoso awọn omi inu iṣan ati ṣayẹwo awọn ipele potasiomu omi ara ati awọn ipele creatine kinase (CK).

Ṣe adaṣe iṣẹ igbala ijanu aaye iṣẹ rẹ ki o gba iṣẹ iranlọwọ akọkọ ibalokanjẹ

Maṣe ro pe kiki gige lori ijanu kan jẹ ki oṣiṣẹ kan ni aabo. Gbogbo awọn atukọ ti n ṣiṣẹ ni giga yẹ ki o ṣe igbesi aye kan, adaṣe adaṣe akoko pẹlu winch igbala wọn lori aaye tabi igbega ariwo ṣaaju ki o to bẹrẹ iṣẹ, rii daju pe gbogbo ijanu ni awọn okun iderun ibalokan ti ibadi ti o baamu si giga ti oluso, ati pari ọwọ ifọwọsi-lori iranlọwọ akọkọ ati iṣẹ CPR lati Red Cross, St John Ambulance, tabi igbimọ aabo ti a fọwọsi.

Awọn ibeere ti a beere nigbagbogbo

How quickly can a worker die while hanging uninjured in a safety harness after a fall?

A worker hanging vertically and motionless in a full-body fall arrest harness can lose consciousness (orthostatic syncope) in as little as 5 to 15 minutes, and progress to fatal hypoxic cardiac arrest within 15 to 30 minutes. Because the tight nylon thigh straps pinch the femoral veins in the groin while gravity pools up to 40 percent of the body's blood volume in the immobile legs, blood return to the heart drops so drastically that the brain is starved of oxygen.

How do suspension trauma relief straps work, and how fast should you deploy them?

Suspension trauma relief straps are stored in two small zippered pouches clipped to the left and right hips of a full-body harness. Within 30 seconds of a fall, the suspended worker unzips both pouches, drops the two nylon straps down to foot level, hooks them together to create a continuous stirrup loop, and steps both boots into the loop to stand straight up. Standing transfers body weight off the constricting groin straps onto the soles of the boots, reopens the pinched femoral veins, and activates the calf muscle pump to push blood back up to the heart.

What should you do if a coworker is hanging in a harness that does not have trauma relief straps?

Immediately instruct the hanging worker to pump and pedal their legs continuously like riding a bicycle and push their boots against any adjacent wall or column so their legs never hang still. Simultaneously, tie a 30-centimeter (12-inch) loop (such as a bowline or figure-eight on a bight) in the end of a sturdy utility rope on the deck above, anchor the top end securely to a structural beam, and lower the loop down to the worker's feet so they can step into it and stand up while you execute a mechanical lower or aerial lift rescue.

Should you lay a rescued harness suspension victim flat on their back or keep them sitting upright?

Follow modern evidence-based guidelines from the UK Health and Safety Executive (HSE RR708) and the Wilderness Medical Society: unbuckle all tight harness leg straps immediately, and if the rescued worker is unconscious, unresponsive, or dizzy/hypotensive, lay them flat on their back (supine) immediately to restore blood flow to the brain and start CPR if needed. Older theories that laying a suspension victim flat causes sudden heart failure have been disproven by clinical reviews and caused harm by keeping unconscious patients upright when their brains were starving for oxygen.

Why must rescuers never break a high-rise window directly above a stranded window washer?

A stranded window washer on a failed swing-stage scaffold is held up by a tensioned synthetic nylon or polyester vertical lifeline attached to the roof above them. If rescuers inside the building break a tempered or laminated glass window pane directly above the worker, heavy glass shards falling down the facade or jagged glass teeth remaining in the aluminum window frame will instantly slice through the tensioned nylon rope like a razor blade, dropping the worker to their death. Rescuers always breach an adjacent window to the side or below the tensioned lifeline path.

Why does a worker rescued after 15 minutes in a harness need to go to the hospital even if they feel fine?

Prolonged compression of the groin blood vessels and stagnant blood pooling in the legs causes muscle cell breakdown (rhabdomyolysis) similar to a crush injury. When the harness straps are loosened and circulation returns, potassium and myoglobin wash out of the legs into the bloodstream, which can cause delayed heart rhythm disturbances or acute kidney failure hours later. A hospital emergency department can check blood potassium and muscle enzyme levels and administer protective intravenous fluids.

Awọn orisun ṣayẹwo

  • Aabo Iṣẹ-iṣe ati Isakoso Ilera (OSHA, United States): * Aabo ati Iwe Ijabọ Alaye Ilera: Idaduro Ibanujẹ / Aibikita Orthostatic (SHIB 03-24-2004, imudojuiwọn) ati Iwọn Idaabobo Isubu (29 CFR 1926.502 / 29 CFR 1910.140)*.
  • Ilera ati Alase Aabo (HSE, United Kingdom): * Atunyẹwo-Idaniloju Itọnisọna lọwọlọwọ lori Awọn wiwọn Iranlọwọ akọkọ fun ibalokanjẹ idadoro (Iroyin Iwadi RR708) ati Ṣiṣẹ ni Awọn Ilana Giga *.
  • Ile-ẹkọ ti Orilẹ-ede fun Aabo Iṣẹ iṣe ati Ilera (NIOSH / CDC, Amẹrika): * Idilọwọ awọn isubu ati ibalokanjẹ idadoro ni Ikọle ati Awọn iṣẹ Scaffold Idaduro *.
  • Awujọ Iṣoogun Aginju (WMS): * Awọn Itọsọna Iṣeduro Iṣegun fun Idena ati Itọju Ibanujẹ Idaduro Harness (Pasquier et al.)*.
  • Awujọ Amẹrika ti Awọn Ọjọgbọn Aabo (ANSI/ASSP, Orilẹ Amẹrika): ANSI/ASSP Z359.11 Awọn ibeere Aabo fun Awọn ohun ija Ara Kikun ati Awọn ibeere Aabo Z359.4 fun Iranlọwọ-Igbala ati Awọn ọna Igbala Ara-ẹni.

Jẹmọ awọn itọsọna