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29 CFR Part 1910.147 and 29 CFR 1910.331-1910 .335 and NFPA 70E
This procedure establishes the minimum requirements for the lockout or tagout of energy isolating devices. It shall be used to ensure that equipment or machines are isolated from all potentially hazardous energy, and locked out or tagged out before employees do any servicing or maintenance activities where the unexpected energization, start-up, or release of stored energy could cause injury.
There are several situations in which the OSHA Lockout/Tagout Standard and the Hampshire College Lockout/Tagout Program do not apply. All employees working on a service or maintenance project must agree that an exception condition exists before deciding not to use the lockout/tagout procedure. The specific exceptions are:
Job Hazard Analysis
It is the responsibility of all employees to observe the requirements of this procedure. The following specific designations will be used for the procedure.
Authorized Employees: Authorized employees are those employees who are responsible for servicing or maintenance of energized equipment. The following are authorized to apply locks or tags according to the following procedures:
For electrical systems: Facilities and grounds (F and G) electricians.
For saws and woodworking equipment: Carpenters (F and G electricians, if needed).
For HVAC equipment: HVAC department electrician, mechanics, and operators (F and G electricians, if needed).
For gas-fired units/heating system: HVAC personnel (F and G electricians, if needed).
For farm machinery and equipment: Agricultural equipment is not covered by the standard, but for work on equipment and energy sources, farm personnel and F and G electricians, if needed, will be responsible.
For propane gas systems: Licensed gas plumbers are responsible for gas systems.
For dining services equipment: Dining services contractor personnel (F and G electricians, if needed).
Affected employees: Affected employees are employees whose job requires him/her to work on machines or equipment on which servicing is being done under lockout or tagout procedures or who are working in an area in which such procedures are being performed.
Other employees: All other Hampshire College employees.
At the time of adoption of this procedure, all authorized employees were given a training session and a copy of the written procedure. The session is repeated if the need is determined by the annual inspection. New or transferred employees are trained by their supervisor. Facilities and grounds supervisors of affected employees also attend the training session. All training records will be kept at the environmental health and safety office. Affected and other employees will be informed of the purpose and use of the lockout/tagout procedure by use of a workplace poster. The training session will cover the following topics:
Protective clothing and equipment that protects workers from shock and flash hazards will be used when electrical hazards are present. PPE will comply with and be selected according to Table 130.7(C) (10) "Protective Clothing and Personal Protective Equipment (PPE) Matrix" of the NFPA 70E standard.
Note: Poly-blend clothing is not permitted to be worn for outer or inner layers. Watches, rings, and other potentially conductive jewelry and apparel, (i.e. metal buttons), must be removed.
The electrical foreman/qualified person must be able to identify potential hazards, (i.e. arc blast, arc flash, shock, etc.), and determine the proper level of PPE.
Authorized employees will be issued a standardized lock(s) with an individual key. These locks are only used for this lockout procedure. Additional locks, again issued to a specific authorized employee, are available from facilities and grounds. Each lock must have a securely fastened tag with the employee's name and the date of application to a piece of equipment clearly written on the tag.
Standardized tags for use in tagging out equipment are available from facilities and grounds. Durable reusable plastic tags are used. The tag has the word "Danger" on a red field and the words "Do Not Operate." The tag is attached with a single use, self-locking nylon cable tie. The authorized employee's name and the date of application to a piece or equipment are written on the tag.
Locks must be used whenever possible, as tags are essentially a warning device and do not provide the physical restraint that is provided by a lock. If a tag must be used, the following conditions apply:
For electrical systems, use of a tag must be supplemented by "at least one additional safety measure that provides a level of safety equivalent to that obtained by the use of a lock." Examples given in the regulation are the removal of an isolating circuit element, blocking of a controlling switch, or opening of an extra disconnecting device.
The following is the general procedure used for all lockout/tagout applications.
Facilities and Grounds Emergency Procedure: This procedure is to be used only in emergency situations. A lock or tag can be removed by someone other than the authorized employee only when all of the following conditions exist:
Approval to use bolt cutters to remove a lock or a tag during an emergency must be obtained from the director of facilities and grounds or, in his/her absence, from the foreman of the area where the locked-out/tagged-out equipment is located.
Hampshire College has contact meters for use in testing voltage. A qualified person must test the circuit elements and electrical parts of equipment to which personnel will be exposed to verify that it is deenergized prior to starting work. The qualified person must also use the test meter on a known source, to verify that it is operating properly. PPE is required while testing the equipment.
Hampshire College personnel are not authorized to work on systems classified as greater than 480 volts, nominal. Working on energized systems should be a last resort. In the event that it is not feasible to work deenergized, the Limited Approach, Restricted Approach, and Prohibited Approach shock protection boundaries established by Table 130.2 (C) of the NFPA 70E standard must be strictly adhered to. Also, Flash Protection Boundaries must be calculated in compliance with Article 130.3 (A) of the NFPA 70E standard
Outside contractors must follow their own Electrical Safety program and strictly comply with applicable OSHA and NFPA standards.
A written procedure detailing the required procedure for each piece of equipment that requires lockout or tagout is developed by the department responsible for the equipment. This procedure will identify all energy sources, the system voltage, and required PPE and shock and flash protection boundaries, and be posted on or near the piece of equipment.
A written procedure is not needed if all of the following conditions are met:
In the Lockout/Tagout Procedure, if more than one individual is required to lock out equipment, each shall place his or her own personal lockout device or tagout device on the energy-isolating device(s). When an energy-isolating device cannot accept multiple locks or tags, a hasp or lockbox may be used. Each person will remove his/her lock from the isolating device.
One authorized employee will be appointed to oversee the group lockout or tagout device. All employees participating in a group lockout/tagout procedure should be made aware of the type and magnitude of the hazardous energy.
Failure to observe any portion of the college lockout/tagout program will be viewed as a serious safety violation and may be subject to disciplinary action. Failure to make use of locks or tags, bypassing, ignoring or otherwise defeating a tag, or any other deviation from the established program will be considered a serious violation. The backside of each tag will bear the warnings "Do Not Remove This Tag" and "Necessary Disciplinary Action Will Be Taken If These Orders Are Disregarded."
After October 31, 1989, whenever major replacement, repair, renovation or modification of machines or equipment is performed, and whenever new machines or equipment are installed, energy-isolating devices for such machines or equipment shall be designed to accept a lockout device.
Whenever a Hampshire College employee is servicing a machine or equipment that has been isolated by an outside contractor, that college employee or his/her foreman should obtain information about the contractor's lockout/tagout procedure. Conversely, whenever a contractor is servicing machines or equipment that have been isolated by a Hampshire College employee, the college employee should provide information on the College's lockout/tagout procedure.
This procedure will be inspected annually by the director of facilities and grounds or his/her designee. The inspection shall be designed to correct any deviations or inadequacies involved. All authorized employees will be asked to review the effectiveness of the procedure. The inspection will also ascertain the awareness of the limitations of tags as covered in the training programs.
A. Table 130.7(C)(10) Protective Clothing and PPE Matrix
B. Table 130.2(C) Approach Boundaries to Live Parts for Shock Protection
C. Table 130.3(A) Flash Protection Boundary