{"id":1553,"date":"2022-01-24T14:20:45","date_gmt":"2022-01-24T19:20:45","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/?post_type=chapter&p=1553"},"modified":"2022-02-02T14:52:46","modified_gmt":"2022-02-02T19:52:46","slug":"lockout-equipment","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/chapter\/lockout-equipment\/","title":{"raw":"Lockout equipment","rendered":"Lockout equipment"},"content":{"raw":"There are many different types of locking systems. Put your personal lock on the switch using a scissor adapter or hasp as shown in Figure 1. While this figure shows a single safety hasp and lock, it is also common to use more than one hasp when locking out.\r\n\r\n[caption id=\"attachment_246\" align=\"aligncenter\" width=\"288\"]\"\"<\/a> Figure 1 \u2014 Safety switch locked out[\/caption]\r\n

Chains and\/or cables<\/strong><\/h2>\r\nIf you need to lock out equipment with more than one energy source, instead of using several locks you could use a lockout cable to lockout several disconnect switches (Figure 2). This cable would be run through the locking hole in each of the safety disconnects you are locking out. The cable diameter must be large enough to prevent the safety disconnect switches from being operated accidentally. A scissor lock adapter can be used to apply multiple locks.\r\n\r\n[caption id=\"attachment_254\" align=\"aligncenter\" width=\"652\"]\"\"<\/a> Figure 2 \u2014 Cable lockout for multiple disconnects[\/caption]\r\n\r\nChains and cables can also be used to make valve handles inoperable (Figure 3).\r\n\r\n[caption id=\"attachment_252\" align=\"aligncenter\" width=\"818\"]\"\"<\/a> Figure 3 \u2014 Chains used to lock out valve handles[\/caption]\r\n

Tags, locks, and scissors<\/strong><\/h2>\r\nLockout devices must provide a visual verification, must be locked as required, and must have a \u201cDO NOT OPERATE\u201d tag placed on them. The tag must have on it your name, the date and time, and the location and identity of the equipment being worked on.\r\n\r\n[caption id=\"attachment_255\" align=\"aligncenter\" width=\"696\"]\"\"<\/a> Figure 4 \u2014 Safety tag and hasp with lock[\/caption]\r\n

Lockout for circuit breakers<\/strong><\/h2>\r\nLock out the desired breaker. If there is access to the main breaker or disconnect that kills all power to the panel, and if no other workers need to lock out in that panel, then you may lock the panel door closed (Figure \u00a05).\r\n\r\n[caption id=\"attachment_260\" align=\"aligncenter\" width=\"699\"]\"\"<\/a> Figure 5 \u2014 Breaker lockouts[\/caption]\r\n

Cord locks<\/strong><\/h2>\r\nFor plugged-in equipment, if the male end of the plug is in view and you do not leave the machine until you have finished working, a lock is not needed. If the plug is not in view, use an adapter and lock, or lock the cord to an object to prevent it from being reconnected to the circuit. Figure 6 shows a power cord plug lock.\r\n\r\n[caption id=\"attachment_263\" align=\"aligncenter\" width=\"672\"]\"\"<\/a> Figure 6 \u2014 Power cord plug lock[\/caption]\r\n

Lockout station<\/strong><\/h2>\r\nA lockout station has keyed locks to be used only for equipment lockout. It also contains tags and lockout devices. Locks have one key that is kept with the installer of the lock. Once the work procedure is completed, the lock and key should be returned to the lockout station. These stations can be portable or mounted permanently to the wall where required.\r\n\r\n[caption id=\"attachment_266\" align=\"aligncenter\" width=\"658\"]\"\"<\/a> Figure 7 \u2014 Lockout station[\/caption]\r\n

Key box system<\/strong><\/h2>\r\nMachines are often powered by several sources, so situations can arise where a single job requires you to lock out more than one power source. This can be done efficiently and safely with a key box system.\r\n\r\nA key box <\/em>is a box mounted on a wall, containing two sets of locks. Lock set A is mastered to a single key and lock set B is mastered to a different single key. The key box is treated as a locked-out power source. All the regulations of a lockout apply to the key box. A key box lockout procedure checklist must be posted at the key box. Also, other workers may add their locks to the key box.\r\n\r\n[caption id=\"attachment_268\" align=\"aligncenter\" width=\"604\"]\"\"<\/a> Figure 8 \u2014 Key box[\/caption]\r\n

Spades and blinds<\/strong><\/h2>\r\nIn the context of lockout, a spade <\/em>is a round plate with a small tab that is placed between two pipe flanges in order to lock out certain piping sections, and is sometimes referred to as a frying pan <\/em>(Figure 9). The spade prevents cross-contamination and also allows work to be done on individual piping sections. The small tab lets workers see that the spade is in place, in the same way an indicator valve allows workers see whether a valve is in the open or closed position.\r\n\r\n[caption id=\"attachment_270\" align=\"aligncenter\" width=\"811\"]\"\"<\/a> Figure 9 \u2014 Spade parts[\/caption]\r\n\r\nA blind flange <\/em>(Figure 10) is used when the end of the pipe or valve is removed. An open flange <\/em>can be closed off with a blind flange.\r\n\r\n[caption id=\"attachment_272\" align=\"aligncenter\" width=\"793\"]\"\" Figure 10 \u2014 Blind flange[\/caption]","rendered":"

There are many different types of locking systems. Put your personal lock on the switch using a scissor adapter or hasp as shown in Figure 1. While this figure shows a single safety hasp and lock, it is also common to use more than one hasp when locking out.<\/p>\n

\"\"<\/a>
Figure 1 \u2014 Safety switch locked out<\/figcaption><\/figure>\n

Chains and\/or cables<\/strong><\/h2>\n

If you need to lock out equipment with more than one energy source, instead of using several locks you could use a lockout cable to lockout several disconnect switches (Figure 2). This cable would be run through the locking hole in each of the safety disconnects you are locking out. The cable diameter must be large enough to prevent the safety disconnect switches from being operated accidentally. A scissor lock adapter can be used to apply multiple locks.<\/p>\n

\"\"<\/a>
Figure 2 \u2014 Cable lockout for multiple disconnects<\/figcaption><\/figure>\n

Chains and cables can also be used to make valve handles inoperable (Figure 3).<\/p>\n

\"\"<\/a>
Figure 3 \u2014 Chains used to lock out valve handles<\/figcaption><\/figure>\n

Tags, locks, and scissors<\/strong><\/h2>\n

Lockout devices must provide a visual verification, must be locked as required, and must have a \u201cDO NOT OPERATE\u201d tag placed on them. The tag must have on it your name, the date and time, and the location and identity of the equipment being worked on.<\/p>\n

\"\"<\/a>
Figure 4 \u2014 Safety tag and hasp with lock<\/figcaption><\/figure>\n

Lockout for circuit breakers<\/strong><\/h2>\n

Lock out the desired breaker. If there is access to the main breaker or disconnect that kills all power to the panel, and if no other workers need to lock out in that panel, then you may lock the panel door closed (Figure \u00a05).<\/p>\n

\"\"<\/a>
Figure 5 \u2014 Breaker lockouts<\/figcaption><\/figure>\n

Cord locks<\/strong><\/h2>\n

For plugged-in equipment, if the male end of the plug is in view and you do not leave the machine until you have finished working, a lock is not needed. If the plug is not in view, use an adapter and lock, or lock the cord to an object to prevent it from being reconnected to the circuit. Figure 6 shows a power cord plug lock.<\/p>\n

\"\"<\/a>
Figure 6 \u2014 Power cord plug lock<\/figcaption><\/figure>\n

Lockout station<\/strong><\/h2>\n

A lockout station has keyed locks to be used only for equipment lockout. It also contains tags and lockout devices. Locks have one key that is kept with the installer of the lock. Once the work procedure is completed, the lock and key should be returned to the lockout station. These stations can be portable or mounted permanently to the wall where required.<\/p>\n

\"\"<\/a>
Figure 7 \u2014 Lockout station<\/figcaption><\/figure>\n

Key box system<\/strong><\/h2>\n

Machines are often powered by several sources, so situations can arise where a single job requires you to lock out more than one power source. This can be done efficiently and safely with a key box system.<\/p>\n

A key box <\/em>is a box mounted on a wall, containing two sets of locks. Lock set A is mastered to a single key and lock set B is mastered to a different single key. The key box is treated as a locked-out power source. All the regulations of a lockout apply to the key box. A key box lockout procedure checklist must be posted at the key box. Also, other workers may add their locks to the key box.<\/p>\n

\"\"<\/a>
Figure 8 \u2014 Key box<\/figcaption><\/figure>\n

Spades and blinds<\/strong><\/h2>\n

In the context of lockout, a spade <\/em>is a round plate with a small tab that is placed between two pipe flanges in order to lock out certain piping sections, and is sometimes referred to as a frying pan <\/em>(Figure 9). The spade prevents cross-contamination and also allows work to be done on individual piping sections. The small tab lets workers see that the spade is in place, in the same way an indicator valve allows workers see whether a valve is in the open or closed position.<\/p>\n

\"\"<\/a>
Figure 9 \u2014 Spade parts<\/figcaption><\/figure>\n

A blind flange <\/em>(Figure 10) is used when the end of the pipe or valve is removed. An open flange <\/em>can be closed off with a blind flange.<\/p>\n

\"\"
Figure 10 \u2014 Blind flange<\/figcaption><\/figure>\n","protected":false},"author":1495,"menu_order":4,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-1553","chapter","type-chapter","status-publish","hentry"],"part":1129,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/pressbooks\/v2\/chapters\/1553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/wp\/v2\/users\/1495"}],"version-history":[{"count":16,"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/pressbooks\/v2\/chapters\/1553\/revisions"}],"predecessor-version":[{"id":1689,"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/pressbooks\/v2\/chapters\/1553\/revisions\/1689"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/pressbooks\/v2\/parts\/1129"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/pressbooks\/v2\/chapters\/1553\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/wp\/v2\/media?parent=1553"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/pressbooks\/v2\/chapter-type?post=1553"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/wp\/v2\/contributor?post=1553"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/tradesaccesscommoncorelinea\/wp-json\/wp\/v2\/license?post=1553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}