Lockout

Correct lockout prevents serious injuries caused by the unexpected start-up or release of energy or hazardous substances when machines are being serviced or maintained.

There are four necessary actions in any lockout procedure:

  1. Identify all energy sources connected with your work.
  2. Disable, redirect, or stop all energy from becoming active during the repair or replacement.
  3. Apply restraint devices to prevent the system from starting up while you work on it.
  4. Confirm that you have reached a zero energy state by doing a restart or bump test .

[Ref. WorkSafe NB, Safety Talk-Lock out]

As an employer, you must:

  • Establish a written lockout procedure for each and every machine for when it is cleaned, maintained, adjusted or repaired.
  • Ensure the energy source to a machine can be isolated and locked, is in a location familiar to all employees, and is properly identified.
  • Provide safety locks and keys needed to lock out machines.
  • Train employees who need to lock out the machine on the procedure.
  • Ensure no one works on a machine until all the energy sources are locked out and it is placed in a zero energy state by a competent person.
  • Make sure ALL employees who are working on the machine verify:
    • All energy sources are turned off
    • The machine is locked out with lock and key
    • Tags are placed on the lock and include directions to not start the machine, the employee's name and signature, and the date and time when the tag was placed.
Lockout
  • Confirm that all employees understand that no person is to remove a lock or tag except for the person who installed it, or in an emergency, a competent employee designated by the employer.
  • Where a lockout procedure is not appropriate or inadequate, the employer must establish and enforce a code of practice in consultation with the joint health and safety committee or health and safety representative.

As an employee, you must:

  • Be trained and authorized by your employer to use a lockout procedure.
  • Always follow the written lockout procedure (or code of practice) for each machine established by your employer and not take any shortcuts.
  • Use only the locks and tags specified and provided by your employer.
  • Secure your lock and tag it when a multiple lock device (scissor clamp), chain, or block is used on a machine.
  • Only work on a machine after someone competent verifies the machine is in a zero energy state and locked out and tested.
  • Understand that locks are your personal security devices that can only be removed by the person who controls the lock (you).
  • Clear the work area before reactivating the machine or equipment.

When you put your multiple lock device (scissor clamp), chain, or block on a piece of equipment, you also have to lock and tag it. [Reference: WorkSafe NB, Safety Talk-Lock out]

General Regulation - Occupational Health and Safety Act
N.B. Reg. 91-191

Part XVI MECHANICAL SAFETY

Section 239 Lock out

239. (1) An employer shall ensure that in addition to the normal control start and stop mechanism, a machine has a means of isolating the energy source to the machine that is

(a) lockable,

(b) in a location familiar to all employees, and

(c) properly identified.

(2) An employer shall provide a safety lock and key to an employee who may have to lock out a machine.

(3) An employer shall establish a written lock out procedure for a machine and ensure that an employee who may have to lock out a machine has been adequately trained to lock out the machine.

(4) Subject to section 240, where a machine is to be cleaned, maintained, adjusted or repaired, an employer shall ensure that no employee works on the machine until

(a) a competent person puts the machine in a zero energy state,

(b) each employee who will be working on the machine

(i) verifies that all potential energy sources have been made inoperative,

(ii) locks out the machine using the safety lock and key provided by the employer, and

(iii) puts on the safety lock a tag that does not conduct electricity and that contains

(A) words directing persons not to start or operate the machine,

(B) the employee's printed name and signature, and

(C) the date and time when the tag was put on the machine.

(5) No employee shall clean, maintain, adjust or repair a machine until the employee verifies that paragraphs 4(a) and (b) have been complied with and verifies by testing that the machine is inoperative.

(6) No person shall remove a lock out device or tag on a machine except

(a) the person who installed it, or

(b) in an emergency or where attempts made to contact the person referred to in paragraph (a) indicate the person is not available, a competent employee designated by the employer.

[N.B. Reg. 2001-33, s. 86]

Section 240

240. Where the lock out procedure referred to in section 239 is inappropriate for the cleaning, maintenance, adjustments or repairs to be performed or is inadequate for the protection of an employee, an employer shall

(a) establish a code of practice in consultation with the joint health and safety committee or health and safety representative, if any, specifying personnel responsibilities, personnel training and details of procedure for the neutralization, clearance, release and start up of the machine, and

(b) comply with and enforce the code of practice.

[N.B. Reg. 2001-33, s. 87]