MODULE 20

Lockout/Tagout
1910.147(a)(1) Scope
 Covers servicing and maintenance of
machines and equipment in which
 Unexpected energization or st...
1910.147(a)(1)(ii) Exemptions
 Construction, agriculture and maritime
employment;
 Electrical Utilities;
 Electrical eq...
Control of Hazardous Energy
 Why use lockout/tagout?
 Protects maintenance personnel from
power being reapplied by mista...
1910.147(a)(2) Application
 Service and maintenance:
 Employee required to remove or bypass a
guard or safety device
 E...
1910.147(a)(2) Application
 Exception: Minor adjustments and
servicing activities during normal
production if
 Routine
...
1910.147(a)(2) Application
 Does not apply to cord and plug
connected equipment for which
 Exposure to hazard is control...
1910.147(a)(2) Application
 Does not apply to hot tap operations in
transmission and distribution operations
in pressuriz...
1910.147(a)(3) Purpose
 Establish a program and utilize
procedures for affixing appropriate
lockout devices or tagout dev...
1910.147(b)

Definitions
Affected employee
 Job requires employee to
 operate or use a machine or equipment
on which servicing or maintenance is ...
Authorized employee
 Locks out or tags out machines or
equipment in order to perform servicing
or maintenance on that mac...
Energized
 Connected to an energy source OR
 Containing residual or stored energy

13

©2006 TEEX
Energy isolating device
 A mechanical device that physically
prevents the transmission or release or
energy





14

...
Energy source
 Any source of:







15

Electrical,
Mechanical,
Hydraulic,
Pneumatic,
Chemical,
Thermal, or
Other...
Lockout
 Placement of a lockout device on an
energy isolating device, in accordance
with an established procedure,
ensuri...
Lockout device
 Device that uses a positive
means such as a lock,
either key or combination
type, to hold an energy
isola...
Servicing and/or maintenance
 Workplace activities such as:







18

Constructing,
Installing,
Setting up,
Adjus...
Tagout
 Placement of tagout device
 on an energy isolating device,
 in accordance with an established
procedure,
 to i...
1910.147(c)

General Requirements
Energy control program





21

Energy control procedures
Employee training
Periodic inspections
Any employee who serv...
1910.147(c)(ii) General
Requirements
 If an energy isolating device
is capable of being locked
out, the employer's energy...
1910.147(c)(iii) General
Requirements
 Energy isolating devices designed to
accept lockout devices whenever:
 Replacemen...
1910.147(c)(3) Full employee
protection
 When tagout device used on energy
isolation device capable of being locked
out:
...
1910.147(c)(4) Energy control
procedure
 Procedures shall be developed,
documented and utilized for the
control of potent...
1910.147(c)(4) Energy control
procedure
 Outline scope, purpose, authorization, rules,
techniques for control of hazardou...
1910.147(c)(5) Protective
materials and hardware
 Locks, tags, chains, wedges, key
blocks, adapter pins, self-locking
fas...
1910.147(c)(5) Protective
materials and hardware
 Lockout and tagout devices must be:
 Singularly identified
 The only ...
1910.147(c)(5) Protective
materials and hardware
 Capable of withstanding environment
for maximum time period
 Moisture ...
1910.147(c)(5) Protective
materials and hardware
 Lockout devices:
 Substantial enough to prevent removal without
excess...
1910.147(c)(5) Protective
materials and hardware
 Lockout and tagout devices indicate
identity of employee applying devic...
1910.147(c)(6) Periodic
Inspection
 Energy control procedure inspected at
least annually:
 By authorized employee not us...
1910.147 (c)(7) Training and
communication
 Ensure employees understand
purpose and function of energy
control program
 ...
Employee Training
Requirements
 Authorized employee:
 Recognition of hazardous energy sources
 Type and amount of energ...
Employee Training
Requirements for Tagout
 Train on limitations of tags:
 Warning devices do not provide physical
restra...
Employee Retraining
 For all authorized or affected
employees when:
 Job assignment changes
 Equipment or processes pre...
1910.147(c)(8) Energy Isolation
 Only the authorized employees
performing the servicing or
maintenance may apply lockout/...
1910.147(c)(9) Notification of
Employees
 Affected employees must be notified
 By employer or authorized employee
 Of a...
1910.147(d)

Application of Control
Order of Operation for
Application of Control
1.
2.
3.
4.
5.

Preparation for shutdown
Equipment shutdown – orderly
Equipm...
1910.147(e)

Release from Lockout/Tagout
1910.147(e) Release from
Lockout
 Before lockout or tagout devices
removed and energy restored, ensure:
 Machine or equi...
1910.147(e) Release from
Lockout
 Each lockout/tagout device removed by
employee who applied the device
 If not availabl...
1910.147(f)

Additional Requirements
1910.147(f)(1) Testing or
Positioning
 Temporary removal of lockout/tagout
devices for testing/positioning:






45...
1910.147(f)(2) Outside Personnel
 Contractors and other outside
personnel:
 On-site employer and outside employer
inform...
1910.147(f)(3) Group Lockout or
Tagout
 Procedure must provide protection
equivalent to personal lockout/tagout
device
 ...
1910.147(f)(3) Group Lockout or
Tagout
 When more than one crew, craft,
department, etc. is involved:
 Designated author...
1910.147(f)(3) Group Lockout or
Tagout
 Each authorized employee affixes
personal lockout/tagout device to group
lockout ...
1910.147(f)(4) Shift or Personnel
Changes
 Specific procedures in energy control
plan
 Ensure continuity of lockout/tago...
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  1. 1. MODULE 20 Lockout/Tagout
  2. 2. 1910.147(a)(1) Scope  Covers servicing and maintenance of machines and equipment in which  Unexpected energization or start up or  Release of stored energy could cause  Injury to employees  Normal operation is covered in 1910 Subpart O 2 ©2006 TEEX
  3. 3. 1910.147(a)(1)(ii) Exemptions  Construction, agriculture and maritime employment;  Electrical Utilities;  Electrical equipment (covered by Subpart S)  Oil and gas well drilling and servicing  So why comply? 3 ©2006 TEEX
  4. 4. Control of Hazardous Energy  Why use lockout/tagout?  Protects maintenance personnel from power being reapplied by mistake  Recommended by API RP 54 for electrical systems in drilling and servicing operations  Recognized hazard 4 ©2006 TEEX
  5. 5. 1910.147(a)(2) Application  Service and maintenance:  Employee required to remove or bypass a guard or safety device  Employee required to place part of body into area that would be a danger zone during machine operation cycle 5 ©2006 TEEX
  6. 6. 1910.147(a)(2) Application  Exception: Minor adjustments and servicing activities during normal production if  Routine  Repetitive  Integral to production  Provided that alternative measures provide effective protection 6 ©2006 TEEX
  7. 7. 1910.147(a)(2) Application  Does not apply to cord and plug connected equipment for which  Exposure to hazard is controlled by unplugging and  Plug under exclusive control of employee performing service or maintenance 7 ©2006 TEEX
  8. 8. 1910.147(a)(2) Application  Does not apply to hot tap operations in transmission and distribution operations in pressurized pipelines provided that:  Continuity of service is essential,  Shutdown of system is impractical, and  Documented procedures and special equipment provide proven effective protection for employees 8 ©2006 TEEX
  9. 9. 1910.147(a)(3) Purpose  Establish a program and utilize procedures for affixing appropriate lockout devices or tagout devices to energy isolating devices  Prevent unexpected energization, start up or release of stored energy in order to prevent injury to employees  Training and procedural requirements for other sections’ LO/TO requirements 9 ©2006 TEEX
  10. 10. 1910.147(b) Definitions
  11. 11. Affected employee  Job requires employee to  operate or use a machine or equipment on which servicing or maintenance is being performed under lockout or tagout, or  work in an area in which such servicing or maintenance is being performed 11 ©2006 TEEX
  12. 12. Authorized employee  Locks out or tags out machines or equipment in order to perform servicing or maintenance on that machine or equipment  Affected employee whose duties include servicing or maintenance under this section 12 ©2006 TEEX
  13. 13. Energized  Connected to an energy source OR  Containing residual or stored energy 13 ©2006 TEEX
  14. 14. Energy isolating device  A mechanical device that physically prevents the transmission or release or energy     14 Circuit breakers included NOT push buttons NOT selector switches NOT control circuits ©2006 TEEX
  15. 15. Energy source  Any source of:        15 Electrical, Mechanical, Hydraulic, Pneumatic, Chemical, Thermal, or Other energy What kind of energy did the rock have? ©2006 TEEX
  16. 16. Lockout  Placement of a lockout device on an energy isolating device, in accordance with an established procedure, ensuring that energy isolating device and equipment being controlled cannot be operated until lockout device is removed 16 ©2006 TEEX
  17. 17. Lockout device  Device that uses a positive means such as a lock, either key or combination type, to hold an energy isolating device in the safe position and prevent the energizing of a machine or equipment  Blank flanges and bolted slip blinds included 17 ©2006 TEEX
  18. 18. Servicing and/or maintenance  Workplace activities such as:        18 Constructing, Installing, Setting up, Adjusting, Inspecting, Modifying, and Maintaining and/or servicing machines or equipment ©2006 TEEX
  19. 19. Tagout  Placement of tagout device  on an energy isolating device,  in accordance with an established procedure,  to indicate that energy isolating device and equipment being controlled may not be operated until tagout device is removed 19 ©2006 TEEX
  20. 20. 1910.147(c) General Requirements
  21. 21. Energy control program     21 Energy control procedures Employee training Periodic inspections Any employee who services/maintains any equipment where unexpected energizing or stored energy release could cause injury isolates and renders it inoperative first. ©2006 TEEX
  22. 22. 1910.147(c)(ii) General Requirements  If an energy isolating device is capable of being locked out, the employer's energy control program shall utilize lockout, unless the employer can demonstrate that the utilization of a tagout system will provide full employee protection 22 ©2006 TEEX
  23. 23. 1910.147(c)(iii) General Requirements  Energy isolating devices designed to accept lockout devices whenever:  Replacement or major repair, renovation or modification of equipment is performed or  New machines or equipment are installed 23 ©2006 TEEX
  24. 24. 1910.147(c)(3) Full employee protection  When tagout device used on energy isolation device capable of being locked out:  Same location as potential lockout device  Demonstrably equivalent program  May require additional safety elements 24 ©2006 TEEX
  25. 25. 1910.147(c)(4) Energy control procedure  Procedures shall be developed, documented and utilized for the control of potentially hazardous energy when employees are engaged in the activities covered by this section.  Exception with all 8 elements listed in standard 25 ©2006 TEEX
  26. 26. 1910.147(c)(4) Energy control procedure  Outline scope, purpose, authorization, rules, techniques for control of hazardous energy, including:  Specific intended use of the procedure;  Specific steps for shutting down, isolating, blocking and securing equipment  Specific steps for placement, removal, transfer of lockout/tagout devices and responsibility for them  Specific requirements for testing equipment to verify effectiveness of lockout devices, tagout devices, and other energy control measures 26 ©2006 TEEX
  27. 27. 1910.147(c)(5) Protective materials and hardware  Locks, tags, chains, wedges, key blocks, adapter pins, self-locking fasteners, or other hardware shall be provided by the employer for isolating, securing or blocking of equipment from energy sources 27 ©2006 TEEX
  28. 28. 1910.147(c)(5) Protective materials and hardware  Lockout and tagout devices must be:  Singularly identified  The only device(s) used for controlling energy  Not used for other purposes  And shall meet the following requirements: 28 ©2006 TEEX
  29. 29. 1910.147(c)(5) Protective materials and hardware  Capable of withstanding environment for maximum time period  Moisture or corrosives must not make tag deteriorate  Standardized:     29 Color Shape Size Print/Format ©2006 TEEX
  30. 30. 1910.147(c)(5) Protective materials and hardware  Lockout devices:  Substantial enough to prevent removal without excessive force or unusual techniques such as bolt cutters  Tagout devices:  Substantial enough to prevent inadvertent or accidental removal  Non-reusable attachment means  Attachable by hand, self-lockable  At least equivalent to nylon cable tie 30 ©2006 TEEX
  31. 31. 1910.147(c)(5) Protective materials and hardware  Lockout and tagout devices indicate identity of employee applying devices 31 ©2006 TEEX
  32. 32. 1910.147(c)(6) Periodic Inspection  Energy control procedure inspected at least annually:  By authorized employee not using the procedure being inspected  Correct any deviations  Review employee responsibilities with:  each authorized employee – lockout  each affected or authorized employee – tagout 32 ©2006 TEEX
  33. 33. 1910.147 (c)(7) Training and communication  Ensure employees understand purpose and function of energy control program  Ensure employees acquire skills required for safe application, usage, removal of energy controls 33 ©2006 TEEX
  34. 34. Employee Training Requirements  Authorized employee:  Recognition of hazardous energy sources  Type and amount of energy in workplace  Methods and means for energy isolation  Affected employee:  Purpose and use of procedure  Other employees in area:  Procedure and prohibition on restarting 34 ©2006 TEEX
  35. 35. Employee Training Requirements for Tagout  Train on limitations of tags:  Warning devices do not provide physical restraint that a lock would  Tag not to be removed without owner’s authorization, bypassed, ignored, defeated  Must be legible / understandable to work  Must withstand environmental conditions  False sense of security  Attach securely: avoid accidental removal 35 ©2006 TEEX
  36. 36. Employee Retraining  For all authorized or affected employees when:  Job assignment changes  Equipment or processes present new hazard  Energy control procedure changes  Knowledge / use of program is inadequate  Certify employee training up to date 36 ©2006 TEEX
  37. 37. 1910.147(c)(8) Energy Isolation  Only the authorized employees performing the servicing or maintenance may apply lockout/tagout 37 ©2006 TEEX
  38. 38. 1910.147(c)(9) Notification of Employees  Affected employees must be notified  By employer or authorized employee  Of application and removal of lockout and tagout devices  Before controls are applied  After controls are removed 38 ©2006 TEEX
  39. 39. 1910.147(d) Application of Control
  40. 40. Order of Operation for Application of Control 1. 2. 3. 4. 5. Preparation for shutdown Equipment shutdown – orderly Equipment isolation Lockout or tagout device application Stored energy relieved; continue while reaccumulating 6. Verification of isolation  40 Test and return to “off” position ©2006 TEEX
  41. 41. 1910.147(e) Release from Lockout/Tagout
  42. 42. 1910.147(e) Release from Lockout  Before lockout or tagout devices removed and energy restored, ensure:  Machine or equipment:  Inspect area; remove nonessential items  Ensure equipment components intact  Employees:  Ensure all employees safe or removed  Before restart, notify affected employees of removal 42 ©2006 TEEX
  43. 43. 1910.147(e) Release from Lockout  Each lockout/tagout device removed by employee who applied the device  If not available, removed under employer direction  Specific procedures and training from energy control program must be in use!  Verify that applying employee is not at facility  Make all reasonable efforts to contact/notify  Ensure authorized employee knows of removal before resuming work at facility 43 ©2006 TEEX
  44. 44. 1910.147(f) Additional Requirements
  45. 45. 1910.147(f)(1) Testing or Positioning  Temporary removal of lockout/tagout devices for testing/positioning:      45 Clear tools and materials Remove employees from equipment area Remove lockout/tagout devices (as in (e)) Energize and test or position Deenergize systems and reapply energy control measures to continue servicing ©2006 TEEX
  46. 46. 1910.147(f)(2) Outside Personnel  Contractors and other outside personnel:  On-site employer and outside employer inform each other of lockout/tagout procedures  On-site employer complies with outside employer’s energy control program 46 ©2006 TEEX
  47. 47. 1910.147(f)(3) Group Lockout or Tagout  Procedure must provide protection equivalent to personal lockout/tagout device  Primary responsibility is vested in an authorized employee for a set number of employees working under the protection of a group lockout or tagout device (such as an operations lock); 47 ©2006 TEEX
  48. 48. 1910.147(f)(3) Group Lockout or Tagout  When more than one crew, craft, department, etc. is involved:  Designated authorized employee takes lockout/tagout control responsibility  Coordinates affected work forces  Ensures continuity of protection 48 ©2006 TEEX
  49. 49. 1910.147(f)(3) Group Lockout or Tagout  Each authorized employee affixes personal lockout/tagout device to group lockout device when beginning work  Each removes personal device when stopping work on this equipment 49 ©2006 TEEX
  50. 50. 1910.147(f)(4) Shift or Personnel Changes  Specific procedures in energy control plan  Ensure continuity of lockout/tagout protection  Orderly transfer of lockout/tagout device protection between shifts  Minimize exposure to hazards from unexpected energization or release 50 ©2006 TEEX
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