Presentation on theme: "Rigging, Signals, Power Line Safety & Assembly / Disassembly in Construction Safety Standard WAC 296-155 Chuck Lemon Crane Safety Manager."— Presentation transcript:
Rigging, Signals, Power Line Safety & Assembly / Disassembly in Construction Safety Standard WAC Chuck Lemon Crane Safety Manager
Topics to be Covered Crane Requirements for Const. Activities –Rigging & Signal Person –Part L Changes –Power Line Requirements –Assembly / Disassembly
Part L Phase 1- Effective January 1, 2010 (Crane Safety Rule) Crane Certification Operator Certification Crane Types Includes: Mobile, Articulating, Tower cranes when used in the construction industry
Part L Cranes Included (performing construction activities) Mobile CranesCrawler Cranes Lattice BoomHydraulic Telescoping Boom Articulating Rough Terrain Cranes Tower CranesSelf Erecting Tower Cranes DerricksDigger Derricks Exempt (crane certification and operator certification) Cranes <2000 # capacityBackhoes Automobile WreckersPump Hoists ForkliftsDedicated Drilling Rig Permanently installed overhead/bridge cranes
Washington State Crane Rule Phase 2- Effective February 1, 2012 WAC , Safety Standards for Construction Workers, Part L As effective as OSHA Incorporated Latest ASME Requirements for Slings and Rigging Hardware 270 pages
Part L Crane certification Crane proof load testing- requirements Crane certifier qualifications and accreditation Crane Operator qualifications and certification Signals and Signal person qualifications Rigging and Rigger qualifications Crane inspection and operational requirement Duties of assigned personnel Assembly/disassembly Mobile, Tower, Articulating Overhead cranes, and Derricks Wire Rope Inspections Power line safety Training Safety devices and Operational aids Personnel lifting requirements Rigging and rigging hardware Table of Contents (Reader’s Digest Version)
Signal Persons Qualifications
Signal Person (Required as of Feb 1, 2012) This applies to construction activities which involve cranes, derricks, and powered industrial trucks which have been configured to hoist and lower by means of a winch or hook A Qualified Signal Person is required when: –Point of operation is not in full view of operator –View of direction of travel is obstructed –Site specific safety concerns which the operator or person handling the load determines it necessary –working near energized power lines and a dedicated spotter is used, this spotter must also be a qualified signal person
Signal Person Qualifications Qualification Requirements: –Know and understand the type(s) of signals which will be used –Competent in the application of the type of signals used –Have a basic understanding of equipment operation and limitations, crane dynamics, and boom deflection
Signal Person Qualifications As of February 1 st, 2012 Qualification Requirements: –Verbal or written test –AND practical test –Documentation from qualified evaluator must be on site A Third Party Qualified Evaluator An Employer Qualified Evaluator –Employer qualification is not portable
Qualified Rigger ( )
What did the Rule say Before? WAC Qualified person – Rigging. Qualified person – A person who, by possession of a recognized degree or certificate of professional standing, or who, by extensive knowledge, training, and experience, has successfully demonstrated the ability to solve or resolve problems relating to the subject matter. Also has authorization or authority by the nature of their position to take prompt corrective measures to eliminate them. The person shall be knowledgeable in the requirements of this part.
Riggers (cont’d) Qualification Requirements: –Know and understand the requirements of applicable ASME standards (such as B30.9,Slings and B30.26, Rigging Hardware) –Know and understand the type of sling and hitches used including removal criteria for rigging gear –Be competent in the application of the type of hitches used
Riggers (cont’d) Qualification Requirements: –Basic understanding of the applicable slings, rigging hardware, winch, below-the-hook lifting devices and their limitations –Know and understand rigging related conditions, such as load weight estimation, center of gravity, effect of angles on rigging components and basic hand signals, as applicable.
Riggers (cont’d) Qualification Documents: (July 31, 2012) Changed to: (February 1, 2013) –Written and Practical test –Documentation from qualified evaluator must be on site A Third Party Qualified Evaluator An Employer Qualified Evaluator –Employer's qualification is not portable
Qualified Rigger When required: –During hoisting activities while Assembling or Disassembling a crane or derrick –Whenever workers are : Hooking, unhooking, guiding the load or in the initial connection of a load to a component or structure and are within the fall zone This applies to all construction material handling activities, including cranes, derricks, powered industrial trucks, excavators, backhoes, loaders, come-a-longs, chain falls, etc. The Department is looking at developing a separate set of requirements for Material Handling not involving Cranes.
Qualified Riggers and Signal Persons Qualified Rigger________________________________ Date _______________________ Rigging Type: Chain Slings Wire Rope Synthetic Metal Mesh Rigging Hardware: Shackles Turnbuckles Eye Bolts Wire Rope Clips Third Party Evaluator __________________________ Employer Evaluator ___________________________ Evaluator Signature___________________________ Evaluator Company____________________________ The employer must make the documentation for whichever option is used available at the site while the rigger or signal person is employed by the employer. The documentation must specify each type of rigging and signaling type The documentation must specify each type of signaling Sample Documentation Qualified Signal Person__________________________ Date _______________________ Signaling Type: Voice Hand Radio Other_______________ Crane Type: Mobile Tower Articulating Overhead Third Party Evaluator _________________________ Employer Evaluator ___________________________ Evaluator Signature ___________________________ Evaluator Company____________________________
Power Line Safety
Power Line Safety Requirements If the crane, load, or rigging could get closer than 20/50 feet to an energized power line there are new safety requirements which apply. If the crane, load, or rigging can not get closer than 20/50 feet to the power line even if the crane is operated at its maximum working radius, the 20/50-foot requirement is satisfied. Minimum approach distance: Up to 350kv20 Feet Over 350KV50 Feet
Power Line Safety Requirements (Part L before 2/1/2012) For energized power lines rated at or below 50kV the minimum approach distance shall be 10 ft. For lines rated over 50 kV., minimum clearance between the lines and any part of the crane or load shall be 10 feet plus 0.4 inch for each 1 kV. over 50 kV., or twice the length of the line insulator, but never less than 10 feet
Power Line Safety Requirements (Table 4) Minimum Clearance Distances Table Voltage Minimum clearance distance up to 50 (kV) 10 (feet) over 50 to over 200 to over 345 to over 500 to over 750 to 1,00045 That was easy
Power Line Safety Requirements Identify the Work Zone Define the work zone by demarcating boundaries such as flags, or a device such as a range limit device or a range control warning device and prohibiting the operator from operating past those boundaries. Note Flags
If the crane or load COULD get closer than 20/50 feet of Power Lines in the Work Zone Crane operations near power lines, use one of 3 Options –Option 1 - Deenergize & Ground Power lines –Option 2 - Maintain 20/50 foot clearance –Option 3 - Obtain power line voltage from Utility Owner/Operator and ensure the crane or rigging does not get closer than the distances listed in Table 4
Power Line Safety Requirements Options 2 and 3 require the following: Conduct a planning meeting with crane operator, & all workers who will be in the area of crane & load This meeting must address the location of the power lines and the steps that will be implemented to prevent encroachment- electrocution If tag lines are used they must be nonconductive Erect elevated warning line, barricade, or line of signs, in view of the operator, equipped with flags or similar high-visibility markings (opt 2 = 20/50 feet; opt 3 = Table 4)
Nonconductive Nonconductive means that, because of the nature and condition of the materials used, and the conditions of use (including environmental conditions and condition of the material), the object in question has the property of not becoming energized (that is, it has high dielectric properties offering a high resistance to the passage of current under the conditions of use).
Power Line Safety Requirements Options 2 and 3 also requires at least one of the following: Proximity Alarm * Dedicated Spotter that is also a “Qualified Signal Person” Range Control Warning Device Range Movement Limiter Insulating Link * * Currently, Proximity alarms and Insulating Links do not meet the National Recognized Testing Laboratory (NRTL) requirements.
Power Line Safety Requirements If Dedicated Spotter is used, 5 rqmt. must be met: 1.Spotter must be in continuous contact with operator 2.Be equipped with a visual aid to assist in identifying minimum clearance distance Examples of visual aid include: Clearly visible line painted on ground, clearly visible line of stations, line-of-site landmarks (such as a fence post and building corner)
Power Line Safety Requirements If Dedicated Spotter is used cont.: 3.Be positioned to effectively gauge the clearance distance 4.Where necessary, use equipment that enables spotter to communicate directly with operator, such as radio or telephone 5.Give timely information to the operator so that the required clearance distance can be maintained
29 Could you get within 20 feet of a power line? YESNO Option #1 Deenergize & Ground Encroachment Prevention Measures Option #3 Ask Utility for Voltage and Use Table 4 (with minimum clearance distance) Option #2 20-foot Clearance No Further Action Planning Meeting If Tag Lines are Used, They Must be Nonconductive Elevated Warning Lines, Barricades, or Line of Signs PLUS (Choose One): Proximity Alarm*, Spotter, Range Control Warning Device, Range Limiter, or Insulating Link*
Operation INSIDE Table 4 ALL of the following MUST be met: (41 items) Notify Crane Safety Program at L&I –(360) or Employer determines it is infeasible to perform job without breaching minimum approach distances After consultation with utility owner/operator it is determined infeasible to deenergize & ground power lines or relocate the power lines
Operation INSIDE Table 4 cont. Power Line owner/operator determines the minimum clearance distance Hold a planning meeting with utility owner/operator to determine the procedures to be followed in order to prevent electrical contact – procedures must include: –Deactivation of device that automatically reenergizes circuit in event of power line contact –Employ a dedicated spotter – Spotter must:
Operation INSIDE Table 4 cont. –Be equipped with a visual aid to assist in identifying the minimum clearance distance –Be positioned to effectively gauge clearance distance –Use equipment that enables the dedicated spotter to communicate directly with the operator –Give timely information to the operator –Dedicated spotter must be a Qualified Signal Person (see WAC )
Operation INSIDE Table 4 cont. Have an elevated warning line in view of the operator with high-visibility flags Use an insulating link* installed at a point between the end of the load line and the load All employees who may come into contact with the equipment must wear gloves rated for the voltage involved Use nonconductive rigging
Operation INSIDE Table 4 cont. Use range limiter (if equipped) that is set to prevent breaching minimum clearance distance If tag line is used it must be nonconductive Barricade a perimeter at least 10 feet away from crane to prevent unauthorized entry Employees must be prohibited from touching the load line above the insulating link
Operation INSIDE Table 4 cont. Only essential employees are permitted in the area of the crane and load The crane must be properly grounded Insulating line hose or cover-up must be installed by the utility owner/operator Procedures are documented and available on- site The following personnel must meet with the utility owner/operator to discuss procedures:
Operation INSIDE Table 4 cont. –Crane user, crane operator, ALL workers that will be in the area of the crane or load Employer must ensure procedures are implemented Employer must identify one person who will direct the implementation of the procedures If a problem occurs implementing the procedures or it is found that the procedures are inadequate, new procedures must be developed or deenergize power lines
Operation INSIDE Table 4 cont. All safety devices, operational aids must meet manufacturer’s procedures for use The employer must train each employee and crew member assigned to work with the crane as follows: –Procedures to be followed to prevent electrical contact –Information regarding the danger of electrocution from the operator simultaneously touching the crane and ground
Operation INSIDE Table 4 cont. –The importance of the operator remaining inside the cab except where imminent danger of fire, explosion, or other emergency that necessitates leaving the cab –The safest means of evacuating from the crane that may be energized –The danger of potentially energized zone around the crane (step potential) –The need for crew in the area to avoid approaching or touching the crane or load
Operation INSIDE Table 4 cont. –Safe clearance distance from power lines –Power lines are presumed energized unless utility owner/operator confirms them insulated –The limitations of an insulating link, proximity alarm, and range control device –The procedures to be followed to properly ground crane and limitations of grounding
Power Line Safety Crane assembly/disassembly below energized power lines is prohibited. Crane assembly/disassembly inside Table 4 is prohibited.
Non-Exempt Crane Crane Exempt Excavator W /rigging Excavator W/O rigging Forklift W/O attachment Forklift W hook winch Crane Certification Yes N/A EXEMPT Follow Follow Operator Certification Yes N/A EXEMPT Follow Follow **Qualified Rigger ** When Required (1) When Required (1) When Required (1) When Required (1) When Required (1) When Required (1) **Qualified Signal Person ** When Required (1) When Required (1) EXEMPT When Required (1) Power Line Part L Applicable EXEMPT Applicable Power Line Part I N/A Applicable N/A
Power Lines Part L or Part I Operator Certification Equipment Certification Qualified Signal Person (Part L 53302) ? Qualified Rigger (Part L 53306) ?
Power Lines Part L or Part I Qualified Signal Person (Part L 53302) ? Qualified Rigger (Part L 53306) ? Operator Certification Equipment Certification 863
Responsibilities: Duties of Assigned Personnel Crane Owner: has custodial control of the crane by virtue of lease or ownership Crane User: arranges the crane’s presence on a worksite and controls its use there Site Supervisor: exercises supervisory control over the work site on which a crane is being used and over the work that is being performed on that site Lift Director: directly oversees the work being performed by a crane and the associated rigging crew Crane Operator: directly controls the crane’s function
Crane assembly or disassembly must be controlled by an Assembly/Disassembly (A/D) Director Must comply with: –Manufacturer procedures, or –Employer procedures, which must be developed by a qualified person.
Assembly/Disassembly Preassembly inspection. –Prior to assembling crane components or attachments the A/D director must visually inspect the components and attachments to ensure: Sound physical condition Meet manufacturer’s recommendations Functional per manufacturer's recommendations Documentation of this inspection must remain at the job site while the crane/derrick is in use.
Assembly/Disassembly Procedures –Assembly/Disassembly procedures must address: Ways to prevent unintended dangerous movement or collapse of any part of the equipment; Adequate support and stability of all parts of the equipment; and Positioning employees involved in the assembly/disassembly operation that will minimize their exposure to unintended movement or collapse of the equipment. –The A/D director must follow any manufacturer prohibitions that apply to the assembly/disassembly operation.
Assembly/Disassembly Director Crane assembly or disassembly must be controlled by an Assembly/Disassembly Director. An assembly/disassembly director is an individual who meets the criteria for both a competent person and a qualified person, or by a competent person who is assisted by one or more qualified persons. The A/D director must know & understand the applicable assembly/disassembly procedures.
Assembly/Disassembly Director The A/D director must ensure that the crew members understand all of the following: –Their tasks –The hazards associated with their tasks –The hazardous positions & locations that they need to avoid
Assembly/Disassembly Director Assembly/Disassembly Director must cover 12 Key Hazards with their crew: 1.Adequate site and ground conditions 2.Sufficient blocking for load and stability 3.Suitable boom and jib pick points 4.Identify center of gravity 5.Stability for pin removal 6.Consider wind speed and weather
Assembly/Disassembly Director 12 Key Hazards (continued) : 7.The suitability of blocking material 8.Verification of the loads for assist cranes 9.Snagging of cables or components 10.Struck by counterweights 11.Boom hoist brake failure 12.Loss of backwards stability