CRANE AISLE SAFETY AWARENESS
The purpose of this program is to provide SRM (Storage and Retrieval Machines) safety training for technicians working at distribution centers.
A crane is a two- or four-wheeled captive aisle crane with a tote/carton carrying surface. The crane travels horizontally down the aisle and carries a tote/carton-carrying surface on either a single mast or dual masts. The crane has either an in-feed station at an aisle end and an out-feed station at the other end or both in-feed and out-feed stations located at one aisle end.
Safety training is intended to provide technicians with the information needed to be safe when entering a crane aisle. A team member trained to clear loads and correct faults has completed safety training and has demonstrated the skills to safely manage defective loads. A mechanically or electrically trained SRM technician has demonstrated the skills to be safe and competent while performing maintenance at their training level.
Completion of this training process ensures that the technician has the minimum knowledge to safely enter the aisle and perform basic work on the SRM.
The SRM cranes are designed to operate in automatic mode without the need for operator intervention. If a load fails, it will cause the equipment to not operate properly. Unknown dangers may exist in the aisle from damaged equipment, pallets, totes, tubs, and merchandise. Extreme caution must be exercised to prevent injury in these dynamic environments.
Personnel must always be conscious of surrounding hazards to them and others while in the SRM aisle.
'''Danger of death or severe injuries due to moving machine parts.'''
'''"Never" stand or work under an unsecured lifting carriage or load handling device.'''
All personnel working around the SRM equipment must wear properly fitted clothes and EH rated composite toed leather work shoes or boots. Wearing tennis shoes, baggy cuffs, neckties, jewelry, key rings, and similar apparel or any conductive items is not permitted.
Hard hats will be worn in the SRM aisles when traveling the aisles, when other technicians are working overhead, or if there is a possibility of falling material or debris.
A checklist for untrained personnel to enter the crane aisle is not required for a trainee to enter the crane aisle with a trained technician for the purpose of training. Untrained personnel may not enter the crane aisle for tasks other than training unless a checklist for untrained personnel to enter the crane aisle is completed.
'''Personnel entering the crane aisle under checklist for untrained personnel must participate in group lockout.'''
The area directly above the floor of the SRM aisle as defined by racks and safety gates or cages andcontinuing to the ceiling is considered part of the crane aisle. Persons encroaching on this air space for any reason must be protected by the SRM lockout procedures.
Shifting the mode of control of the SRM from automatic to manual and accessing the aisle is accomplished via the key lock system.
Access to and from the SRM crane aisles are controlled by the use of a fence and locked gate with control interlocks. To ensure personnel safety, all entries will be through the aisle gates. No exceptions!
'''Entering the aisle from any point other than the gates may result in personal injury.'''
When an aisle is accessed, signs will be erected at each end of the aisle and on the base of the SRM stating, '''"WARNING: OUT OF ORDER."''' The sign will be no smaller than 8 ? x 11 inches with letters no smaller than 1-inch tall in a plain text font. As an alternative, a permanently installed sign may be illuminated at the aisle ends. This sign must be manually activated and shine with sufficient brightness as to be readily apparent to a casual observer as to whether it is warning or off. Stack lights do not meet the intent of this requirement and are not acceptable.
'''When a lockout is used:'''
'''When Troubleshooting or a Live PM is Necessary:'''
'''Storage operations performed in the manual mode should be made with caution, since the storage tolerances are not ensured while in manual mode.'''
The two-man rule designates that a when a trained person enters the crane aisle, a second trained person is designated to provide assistance as required, ensuring the safety of the primary person. As an exception, the MM may designate an untrained person to act as the second person in special circumstances. The two-man rule is required at all times unless:
Based on the number of variables that may exist in the aisles, it is not possible to predetermine how to apply the two-man rule in every circumstance. As a minimum, the two-man rule shall consist of the primary person using two-way radio (fully charged and verified by radio check) communications with a designated second person outside the aisle. At times, use of the two-man rule may require the second person to be present at the aisle.
'''Use of the Two-Man Rule is not a replacement for other safe work practices.'''
Ascending the mast of any SRM is physically and mentally challenging. The proper use of a harness and personal fall arrest system (PFAS) equipment is required to prevent injury or death. To minimize the risk of falling, personnel must be fully aware of their physical and mental state and determine if they are prepared for the challenge each time they ascend an SRM mast.
'''Do not attempt to ascend the mast using PFAS until you have received mast ascension training, and all PFAS equipment has passed inspection.'''
The maintenance platforms are considered part of the crane aisle equipment. All of the precautions that apply to accessing the crane aisle on the floor exist for the maintenance platform. When accessing the maintenance platform, the technician in charge must have control of the control keys.
'''Do not attempt to access mast head maintenance platforms until you have received mast head platform training.'''
'''A checklist is required to ride the ASRS; all fall protection procedures must be followed while attempting to ride the ASRS.'''
Used to prevent minor personal injury or damage to the equipment that may result if the proper precautions are not taken.
Calls attention to information that is especially significant to the operation or technician.
Used to help prevent severe personal injury or damage to the equipment that can result if the proper precautions are not taken.
Used to help prevent loss of life. Severe personal injury or substantial property damage will result if proper precautions are not taken.