Page 105 - Safety Memo

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a. Machinery or equipment capable of movement shall the machine or equipment, or the release of stored energy.
be stopped, and the power source shall be de- 3314(i)
energized or disengaged.
7. The employer is required to conduct a periodic inspection
b. Moveable parts shall be mechanically blocked or of the energy control procedures(s) at least annually to
locked out. evaluate their continued effectiveness and determine
necessity for updating written procedures(s). 3314(j)
c. If the equipment must move during cleaning, servicing
or adjusting operations, the employer shall provide and B. For heavy construction equipment repair, 1595(a) requires that
require the use of extension tools or other means to repairs must not be made until workers are protected from
protect employees from injury due to the movement. movement of the equipment or its parts.
Employees shall be trained on the safe use and
maintenance of such tools or means. 3314(c)(1) C. An authorized person shall be responsible for the following
before working on de-energized electrical equipment or
2. Repair works or setting up operations. 3314(d) systems unless the equipment is physically removed from the
wiring system: ESO 2320.4
a. Equipment that has lockable controls or that is readily
adaptable to lockable controls shall be locked out or 1. Notifying all involved personnel. 2320.4(a)(1)
positively sealed in the off position.
2. Locking the disconnecting means in the “open” position
b. For equipment not equipped with lockable controls or with the use of lockable devices, such as padlocks,
readily adaptable to lockable controls, positive means combination locks or disconnecting of the conductor(s) or
must be taken, such as de-energizing or disconnecting other positive methods or procedures which will effectively
the equipment from its source of power, or other prevent unexpected or inadvertent energizing of a
action which will effectively prevent the equipment designated circuit, equipment or appliance. 2320.4(a)(2)
from inadvertent movement or release of stored
energy. Exception: Locking is not required under the following
conditions:
3. Accident prevention signs or tags shall be placed on the
controls of equipment, machines, and prime movers. a. Where tagging procedures are used as specified in
3314(c),(d) 2320.4(a)(3), and
b. Where the disconnecting means is accessible only to
4. A written hazardous energy control procedure shall be
developed and used by the employer. 3314(g) personnel instructed in these tagging procedures.
3. Tagging the disconnecting means with suitable accident
a. Energy control procedure must include separate
procedural steps for the safe lockout/tagout of each prevention tags conforming to the provisions of 2320.6,
machine. 3314(e) and 2320.4(a)(3).
4. Effectively blocking the operation or dissipating the energy
5. When servicing and/or maintenance is performed by a
crew, craft, department or other group, they shall utilize of all stored energy devices which present a hazard,
a procedure which affords the employees a level of such as capacitors or pneumatic, spring-loaded and like
protection equivalent to that provided by the utilization of mechanisms. 2320.4(a)(4)
a personal lockout or tagout device. 3314(h) D. For more helpful information see:
6. Specific hazardous energy control procedures must be 1. The Lock-out/Block-out Methods and Sample Procedures
utilized during shift or personnel changes to ensure the booklet from Cal/OSHA at:
continuity of lockout or tagout protection, including, but
not necessarily limited to, provision for the orderly transfer English:
of lockout or tagout device protection between off-going www.dir.ca.gov/dosh/dosh_publications/lockout.pdf
and oncoming employees, in order to minimize exposure Spanish:
to hazards from the unexpected energization or start-up of www.dir.ca.gov/dosh/dosh_publications/lockout_sp.pdf

98 Cal/OSHA Pocket Guide for the Construction Industry | June 2015 Cal/OSHA Pocket Guide for the Construction Industry | June 2015 99