usually  held  by  the  user’s  shop  or  division  and  do  not require  electrical  safety  check  for  use  ashore.  General Industry  Standards,  29 CFR 1910, and Safety  and Health  Standards  for  Shipyard  Employment,  29  CFR 1915.132,  address  the  shore  Electrical  Safety  Program. Basic Electrical Safety Training All  personnel,  when  reporting  aboard  and  annually thereafter, receive indoctrination on basic electrical safety.  This  indoctrination  covers  the  requirements  of using  personal  protective  equipment,  cardiopulmonary resuscitation  (CPR),  and  first  aid  for  electrical  shock. Training  for  all  personnel  is  documented  and  kept  on file. TAG-OUT/LOCK-OUT  PROGRAM The   Tag-Out/Lock-Out   Program   is   a   two-fold program. It ensures that personnel correctly tag out equipment before conducting maintenance and that personnel are notified when systems are not in a normal configuration.   A   Tag-Out/Lock-Out   Program   is necessary  to  prevent  injury  to  personnel  and  damage  to equipment. Ships have a tag-out program, which requires the use  of  paper  tags  or  labels  to  indicate  systems  are deenergized  or  under  special  configuration.  Personnel must follow this program in the maintenance of all shipboard   equipment,   components,   and   systems. OPNAVINST 5100.19B, chapter B11, and OPNAV- INST 3120.32C, section 630.17, cover this program. Shore activities pattern their Tag-Out/Lock-Out Program  after  OSHA  regulations.  OPNAVINST 5100.23C, chapter 24, covers this program. The tags used ashore are very different from those used aboard ship, and in some instances locks arc used to lock out a system. Tag-out/lock-out procedures consist of a series of tags, adhesive labels, or locks. Personnel apply them to instruments,  gauges,  or  meters  to  show  that  they  are inoperative, restricted in use, or out of calibration. Each tag contains information personnel must know to avoid a mishap. All corrective maintenance should include standard  tag-out/lock-out  procedures,  including  work done by an intermediate maintenance or depot level activity.  Coordination  is  required  between  shipyard  and contract workers and afloat units when tagging-out shipboard  systems. Training ashore and afloat is needed to ensure personnel understand the Tag-Out/Lock-Out Program. Detailed training is required for personnel authorized to administer the program. GAS FREE ENGINEERING PROGRAM Why do we have gas free engineering? Entry into, work in, or work on confined or enclosed spaces may cause injury, illness, fires, or death. Hazards may result from  flammable  or  explosive  materials  or  atmospheres, toxic materials, or an oxygen-depleted atmosphere. Personnel  normally  do  not  inhabit  confined  or enclosed spaces. We consider them unsafe for entry or work  until  an  authorized  person,  usually  the  gas  free engineer, tests the air. Then that person issues a gas free certificate stating the hazard or special precautions to follow.  Only  by  carefully  retesting  the  air  in  confined and enclosed spaces can we ensure the safety and health of  personnel  working  in  these  areas. Health and Fire Hazards A  lack  of  oxygen  in  a  confined  space  will  not support  life  and  may  asphyxiate  workers.  The  presence of   toxic   gases   or   vapors   from   paint   or   tank contamination may cause asphyxiation or intoxication. Flammable vapor or gas build-up could lead to a serious explosion  or  tire.  Any  combination  of  the  above  could lead to fatalities or serious injury or material damage if workers try to enter or work in the unknown atmosphere. Gas Free Certificates The ship’s gas free engineer (GFE) or the shore marine chemist is assigned to test the applicable space. Each person must obey the requirements and limitations outlined on a gas free certificate. The certificate is posted  at  the  entrance  to  the  space.  It  shows  the conditions  that  existed  at  the  time  the  tests  were conducted. The following are examples of conditions documented on gas free certificates: SAFE  FOR  PERSONNEL–SAFE  FOR  HOT WORK SAFE  FOR  PERSONNEL–NOT  SAFE  FOR HOT WORK NOT  SAFE  FOR  PERSONNEL–NOT  SAFE FOR HOT WORK NOT  SAFE  FOR  PERSONNEL  WITHOUT PROTECTION–NOT SAFE FOR HOT WORK NOT SAFE FOR PERSONNEL INSIDE–SAFE FOR HOT WORK OUTSIDE 5-23