OSHA 10 Study Guide | Module 4 | Cranes and Rigging | Construction Training | OSHA 10 exam
Summary
TLDRIn this educational video, Module 4 delves into the fundamentals of cranes and rigging, crucial for workers handling cranes, derricks, hoists, and aerial lifts. It covers OSHA standards, including safety inspections, operator certifications, and equipment maintenance. Key terms like 'boom angle indicator' and 'load rating' are explained. The video emphasizes the importance of adhering to safety protocols to prevent accidents, with a focus on proper crane operation and maintenance to ensure worker safety.
Takeaways
- 📚 Module 4 focuses on the basics of cranes and rigging, including cranes, derricks, hoists, aerial lifts, and conveyors, as outlined in OSHA 29 CFR 1926.550 subpart N.
- 🔧 Key terms such as 'boom', 'hook', 'wire ropes', and 'rigging' are essential for understanding crane operations and safety.
- ⚠️ Employers must ensure that a competent person inspects all machinery and equipment for safe operation before and during use.
- 🔄 Mechanical failures, though only 11% of crane accidents, often lead to significant incidents due to a lack of preventive maintenance or adequate training.
- 🏗️ Crane operators must be aware of the load limits and verify lift calculations to ensure the load is within the crane's load rating.
- 🚫 Employees should stay out of the crane's swing radius for safety, and barricades should be used to prevent access to the swing area.
- 📏 A thorough annual inspection and documentation of hoisting machinery are required by OSHA standards, along with visual inspections before and during each shift.
- 📊 Cranes must have a load rating chart that is clearly visible to the operator to prevent accidents.
- 👷♂️ Qualified engineers or competent persons in structural design must design the suspension system and personnel platform.
- ⛈ Cranes should not hoist personnel in bad weather or if any danger is present, ensuring safety is a priority.
Q & A
What is the main focus of Module 4 in the provided transcript?
-Module 4 focuses on the basics of cranes and rigging, covering topics like cranes, derricks, hoists, aerial lifts, and conveyors, as well as adhering to OSHA 29 CFR 1926.550 subpart N.
What are the key terms introduced in the script related to cranes and rigging?
-Key terms include accident, act, block sheaves, boom, boom angle indicator, boom stops, brake, counterweight, crane, deck, drum, hoist, jib, outriggers, PCSA, pendant, radius, and superstructure.
According to the script, what is the role of a competent person in crane operations?
-A competent person is responsible for inspecting all machinery and equipment before and during use to ensure they are within safe working parameters, and to carry out a thorough annual inspection and document hoisting machinery.
What does OSHA's analysis of crane accidents reveal about the frequency and causes?
-OSHA's analysis reveals an average of 71 fatalities per year due to crane accidents, with nearly 30% of work-related electrocutions involving cranes, and mechanical failures accounting for only 11% of the causes.
What are the responsibilities of crane operators as outlined in the script?
-Crane operators must know the load limits of the crane, verify lift calculations, ensure the load is within the load rating, and stay within the crane's swing radius to ensure safety.
What is the significance of a load rating chart in crane operations?
-A load rating chart is significant as it provides the crane's capacity and limitations of use, which must be adhered to ensure safety and prevent accidents.
Why is it important for cranes and derricks to have a boom angle indicator?
-A boom angle indicator is important because it allows operators to easily see and control the angle of the boom, which is crucial for preventing accidents and ensuring the crane's stability.
What are the conditions under which wire ropes should not be used in crane operations?
-Wire ropes should not be used if there are six randomly distributed broken wires in one lay, three broken wires in one strand, 1/3 of the original diameter of outside individual wires is lost, or if there is evidence of heat damage, kinking, crushing, bird caging, or any other damage resulting in distortion of the rope structure.
What precautions should be taken when hoisting personnel with a crane?
-When hoisting personnel, it is crucial to ensure the crane's rated load does not exceed the original capacity, use a suspension system and personnel platform designed by a qualified engineer, and only allow a qualified welder to perform welding on the personnel platform.
What should employees do if they are hoisted in a crane and a dangerous situation arises?
-If a dangerous situation arises while employees are hoisted, they should be grounded immediately and safely to prevent accidents.
Outlines
🏗️ Module 4 Introduction: Cranes and Rigging Basics
This paragraph introduces Module 4, focusing on cranes and rigging. It serves as a continuation from Module 3, emphasizing the importance of understanding hazards and communication in the workplace. The module is designed for workers interested in learning about various lifting equipment, including cranes, derricks, hoists, aerial lifts, and conveyors. It covers topics mandated by OSHA 29 CFR 1926.550 subpart N. Key terms are defined, such as 'accident,' 'act,' 'block,' 'boom,' 'boom angle indicator,' 'boom stops,' 'break,' 'counterweight,' 'crane,' 'deck,' 'drum,' 'hoist,' 'jib,' 'outriggers,' 'pcsa,' 'pendant,' 'radius,' 'standards,' 'superstructure,' and 'boom.' The paragraph also outlines the structure of the module, which includes three lessons: general standards, cranes, and cranes, the personnel platform, and rigging. It highlights the importance of having a competent person inspect machinery, the need for prompt repair of deficiencies, and the significance of preventive maintenance and training to avoid accidents, as indicated by OSHA's analysis of crane accidents.
🔍 Module 4 Lesson 2: Safe Crane Operation and Maintenance
The second paragraph delves into the specifics of safe crane operation and maintenance. It emphasizes the need for crane operators to be aware of the load limits and to verify lift calculations to ensure safety. The importance of keeping the crane's swing radius clear of employees is stressed, with OSHA recommending complete barricades as the preferred method of protection. The paragraph outlines the requirements for a boom angle indicator, the necessity of keeping the crane level and on firm footing, and the need for a competent person to conduct annual inspections and document hoisting machinery. It also discusses the visual inspections required before and during each shift, as well as monthly inspections. Certification and on-the-job training for crane operators are highlighted, along with guidelines for wire rope conditions that necessitate replacement. The paragraph concludes with a prompt to consider the study questions related to the lesson.
🚧 Module 4 Final Lesson: Personnel Platform and Rigging Safety
The final paragraph of the script covers the safety aspects of cranes, specifically focusing on the personnel platform and rigging. It stresses the importance of adhering to the crane's rated load as specified by the manufacturer and having a visible load rating chart for the operator. The necessity of a qualified engineer's design for the suspension system and personnel platform is mentioned, along with safety measures for access gates during hoisting operations. The paragraph also addresses the qualifications required for welders working on personnel platforms and the prohibition of using bridal and associated rigging for purposes other than hoisting personnel. It advises against hoisting employees in bad weather or dangerous situations and emphasizes the need for immediate grounding and safe handling if a dangerous situation arises. The paragraph concludes with an invitation for viewers to ask questions about the module and a reminder to stay tuned for the next video on Module 5.
Mindmap
Keywords
💡Hazard
💡Cranes
💡Rigging
💡OSHA 29 CFR 1926.550
💡Competent Person
💡Load Limits
💡Swing Radius
💡Preventive Maintenance
💡Certification
💡Wire Ropes
Highlights
Module 4 focuses on the basics of cranes and rigging, covering topics included in OSHA 29 CFR 1926.550 subpart N.
The module is designed for workers interested in learning about cranes, derricks, hoists, aerial lifts, and conveyors.
Key terms such as 'accident', 'act', 'block sheaves', 'boom', and 'boom angle indicator' are introduced.
The importance of a competent person inspecting machinery and equipment before and during use is emphasized.
OSHA's analysis reveals an average of 71 fatalities per year due to crane accidents.
Nearly 30% of work-related electrocutions involve cranes, according to an OSHA study.
Mechanical failures, though only 11% of crane accident causes, often lead to significant incidents.
Studies show mechanical failures are frequently due to lack of preventive maintenance or adequate training.
Crane operators must know the load limits and the approximate weight of the load to be lifted.
All employees should stay out of the crane's swing radius for safety.
A boom angle indicator must be visible to the operator for safe operation.
Cranes must be within 1% of level grade and on firm footing for stability.
Annual inspections and visual inspections before and during each shift are required by OSHA standards.
Crane operators must be certified and undergo on-the-job training for specific types of cranes.
Wire ropes should not be used under certain conditions, such as broken wires or distortion.
Load rating charts must be clearly visible to the crane operator to prevent accidents.
Cranes and derricks with variable angle booms require a boom angle indicator for safe operation.
The suspension system and personnel platform must be designed by a qualified engineer for structural integrity.
Access gates on cranes must not swing outward during hoisting and should have a restraining device.
Welding of the personnel platform should only be performed by a qualified welder familiar with the materials and grades.
Cranes should not be used for hoisting personnel in bad weather or if any danger is present.
If a dangerous situation arises while personnel are hoisted, they should be grounded immediately.
Transcripts
welcome back fellow
Learners in the last video for module 3
we talked about Hazard
communication here is a quick recap
Mists Vapors dust or
aerosols training a course of study in
which employees are instruct now we will
begin with module 4 make sure you have
subscribed and watch the previous
modules to follow along
easily let's start module 4 an exciting
and informative topic that expertly
covers the basics of cranes and
rigging this module is intended for
workers who want to learn about cranes
dercks hoists aerial lifts and
conveyors this part covers topics
included in OSHA 29 CFR
1926.550 subpart
n this module is comprised of the
following three
lessons first general
standards second
cranes third cranes the Personnel
platform and
rigging the essential key terms are
accident harmful event that is
unexpected or without apparent cause act
such as a statute decree or enactment
resulting from a decision by a
legislative body block sheaves or
grooved pulley in a frame with a hook
eye and strap boom an inclined Spar
strut or other long member supporting
the hoisting tackle boom angle indicator
an accessory device that measures the
angle and weight of lifted objects
including load blocks hooks wire ropes
rigging boom and ancillary attachments
boom stops a device that is used to
restrict the angle of the boom when it
reaches its highest position break to
slow or stop motion by friction or power
counterweight weights balance loads and
the Crane's weight provides stability
crane consists of a rotating structure
on rubber tires or crawler Treads used
for lifting and lowering
horizontally deck the revolving
superstructure or turntable bed drum the
spool or cylindrical member around which
cables are wound for raising and
lowering loads hoist used to lift and
lower load jib an extension is attached
to the boom point to provide added boom
length for lifting specified loads
Outriggers support members attached to
the Crane's carrier frame to level and
stabilize the crane pcsa power crane and
shovel
Association pendants it is a stationary
wire rope used to support the boom
radius the horizontal distance from the
axis of the rotation of the Crane's
superstructure to the center of the
suspended load standards measure of
comparison for quantitative or
qualitative value a
Criterion superstructure the rotating
frame Gantry boom or other operating
equipment now we will initiate the first
lesson which covers General
standards the key points
are the employer should designate a
competent person to inspect all
machinery and equipment before and
during use to ensure they are within
safe working
parameters all def efficiencies must be
promptly repaired and defective Parts
replaced before the machine can be
used OSHA's analysis of crane accidents
in General Industry and construction
identified an average of 71 fatalities
per
year a study conducted by OSHA showed
that nearly 30% of work-related
electrocutions involved
cranes although mechanical failures
represent only 11% of the causes of
crane accidents they usually result in
significant accidents involving injuries
fatalities substantial material costs
and negative media
coverage lastly studies and analyses
often show that mechanical failures are
frequently due to a lack of preventive
maintenance or adequate training and
Personnel
experience now look at the study
question let's Dive Right into lesson
two exploring the safe world of
cranes
the key points
are crane operators must know the load
limits of the crane and the approximate
weight of the load about to be
lifted once the load weight is known the
operator must verify lift calculations
and determine if the load is within the
load rating of the
crane all employees are advised to stay
out of the Crane's swing radius Osa
determined that the preferred way to
protect employees in these situations is
to completely barricade the ENT entire
swing radius of the equipment and
prevent employee access to the
area a boom angle indicator must be
located on the crane where it will be
visible to the
operator the crane must be uniformly
within 1% of level grade and on firm
footing a competent person must carry
out a thorough annual inspection and
document hoisting
Machinery in addition to the annual
documented inspection the OSHA standard
requires a visual inspection before and
during each shift and an additional
inspection at least once a
month all operators must be certified to
operate a specific type of crane before
they are allowed to do so furthermore
all operators must undergo on the job
training to familiarize themselves with
any conditions particular to the
workplace lastly wire ropes should not
be used in any of the following
conditions if there are six randomly
distributed broken WI wires in running
ropes in one lay or three broken wires
in one strand in one
lay where 1/3 the original diameter of
outside individual wires with kinking
crushing bird caging or any other damage
resulting in Distortion of the Rope
structure if there is evidence of any
heat damage from any
cause in standing ropes more than two
broken wires in one lay in sections
Beyond end connections or more than one
broken wire at an end connection
now look at the study
question let's jump into our final
lesson exploring cranes the Personnel
platform and
rigging the key points
are always ensure that the Crane's rated
load does not exceed the original
capacity specified by the Crane's
manufacturer to ensure safety each crane
must have a load rating chart with
clearly visible letters and figures the
chart should be fixed so the crane
operator can easily R it to prevent
accidents when permanently installing
cranes and DS on a barge ensure their
capacity and limitations of use comply
with current design
criteria cranes and DS with variable
angle booms must have a boom angle
indicator placed where operators can
easily see
it the suspension system and the
Personnel platform must be designed by a
qualified engineer or a competent person
person qualified in structural
design if access gates are present
ensure they do not swing outward during
hoisting and are equipped with a
restraining device to prevent
accidents only a qualified welder
familiar with the weld types materials
and grades is allowed to perform the
welding of the Personnel
platform when Bridal and Associated
rigging are not hoisting Personnel they
should not be used for other
purposes when the crane engine is is
running and the platform is occupied the
crane or Derk operator should always
remain at the
controls employees should not be hoisted
in bad weather or if any danger is
present if they are hoisted and a
dangerous situation arises they should
be grounded immediately and
safely now look at the study
questions in the end if you have any
queries about this module don't hesitate
to drop them in the comments section
below we'll be back with module 5 in our
next video remember to subscribe and
press the Bell icon to stay updated
until then take care and stay
safe
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