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<img border="0" width="600" style="width:6.25in" id="_x0000_i1027" src="https://www.jlab.org/ehs/images/LessonsLearnedgraphic.jpg" alt="Lessons Learned">
</p>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</div>
</td>
</tr>
</table>
</div>
</td>
</tr>
<tr>
<td valign="top" align="center" style="background:white;padding:6.75pt 0in 6.75pt 0in;background:cover;-ms-text-size-adjust: 100%;-webkit-text-size-adjust: 100%;background-size: cover;background-position-x:50%;background-position-y:50%;border-top:3px solid #AB162B;" id="templateBody">
<style type="text/css">:-moz-focusring {
outline: none;
}
body {
color: #5b6065;
font-family: Arial;
font-size: 16px;
padding: 0 !important;
}
fieldset {
margin-bottom: 1em;
border: 1px solid;
padding: 0.5em;
}
legend {
font-size: inherit;
margin: 0;
width: auto;
color: inherit;
font-weight : bold;
}
thead, tbody, tfoot {
border-color: #5b6065;
}
a, .ui-widget-content a, a:hover, .ui-widget-content a:hover, .ui-autocomplete.app-autocomplete .ui-menu-item .ui-menu-item-wrapper {
color: #ac172b;
}
.ui-widget-content {
color: inherit;
font: inherit;
}
p {
margin: 0 0 20px;
}
.h2, h2 {
font-size: 20px;
margin: 0;
padding-bottom: 20px;
}
h3 {
font-size: 1.2em;
line-height: 1.3em;
margin-bottom: 0.667em;
margin-top: 0.667em;
}
.page-wrapper {
overflow: inherit;
background: #f4f4f5 none repeat scroll 0 0;
padding-top: 160px;
}
.container {
background: #fff none repeat scroll 0 0;
position: relative;
width: 1315px;
}
ul.menu {
list-style: outside none none;
margin: 0;
padding: 0;
}
ul.menu li {
list-style: outside none none;
margin: 0;
padding: 0;
}
input[type="image"] {
border: 0 none !important;
padding: 0 !important;
}
input.form-text {
background: #e4e4e4 none repeat scroll 0 0;
border: medium none;
color: #6d6a6a;
padding: 5px 10px;
}
input.form-submit {
background-color: #ad172b;
border: medium none;
color: #fff;
font-size: 20px;
padding: 6px 20px;
text-transform: uppercase;
}
.for-mobile, .mobileNav {
display: none;
}
/* header */
header {
background: #fff none repeat scroll 0 0;
left: 0;
min-height: 160px;
position: fixed;
top: 0;
width: 100%;
z-index: 100;
}
header::before {
background: #fff none repeat scroll 0 0;
content: "";
height: 100px;
position: absolute;
top: -100px;
width: 100%;
}
header .container {
width: 90%;
}
header .top-menu ul.menu li.last a.right {
float: none;
}
.page-wrapper.smaller-header header {
min-height: auto;
}
a.logo {
margin: 0;
padding: 33px 0;
padding-top: 33px;
transition: all 0.3s ease 0s;
}
.logo img {
height: 75px;
transition: all 0.3s ease 0s;
position: relative;
z-index: 100;
}
@media screen and (max-width: 750px) {
#DevelopmentHeaderNote {
font-size: 10px !important;
}
}
.top-right {
float: right;
padding: 23px 0 30px;
transition: all 0.3s ease 0s;
width: 260px;
}
.top-right * {
margin: 0;
}
.primary-nav {
float: right;
padding: 55px 40px 0 0;
transition: all 0.3s ease 0s;
}
.region.region-navigation {
float: right;
width: 100%;
}
.region.region-top-right > div {
float: right;
}
.top-menu {
height: 26px;
opacity: 1;
text-align: right;
transition: all 0.3s ease 0s;
visibility: visible;
}
.top-menu .menu > li.first {
margin: 0;
padding: 0;
}
.top-menu .menu > li.first::after {
display: none;
}
.top-menu .menu > li::after {
background: #404145 none repeat scroll 0 0;
content: "";
height: 20px;
left: 0;
position: absolute;
top: 2px;
width: 1px;
}
.top-menu .menu > li.signout a {
color: #ac172b;
}
.top-menu .menu > li a {
color: #404145;
font-size: 18px;
padding: 0;
text-transform: uppercase;
}
.top-menu .menu .leaf {
white-space: nowrap;
}
.main-menu ul.menu {
float: right;
}
.main-menu ul.menu li {
float: left;
padding-left: 40px;
position: relative;
}
.main-menu li > a {
color: #404145;
font-family: Arial;
font-size: 20px;
font-weight: 500;
text-transform: uppercase;
}
.top-right #HeaderSearchForm {
padding-bottom: 7px;
padding-right: 37px;
padding-top: 5px;
position: relative;
}
.top-right #HeaderSearchForm .views-exposed-form div {
padding: 0;
}
.top-right #HeaderSearchForm label {
display: none;
}
.top-right #HeaderSearchForm .views-exposed-form input.form-text {
width: 100%;
}
.top-right #HeaderSearchForm .views-submit-button {
float: left;
padding: 0;
position: absolute;
right: 0;
top: 8px;
}
.top-right #HeaderSearchForm .views-submit-button input {
background-color: transparent;
background-image: url("../images/search-icon.jpg");
background-position: center center;
background-repeat: no-repeat;
background-size: auto 100%;
border: medium none;
display: block;
font-size: 0;
height: 25px;
line-height: 0;
padding: 0;
text-indent: -999px;
width: 34px;
}
.usde-logo {
height: 31px;
opacity: 1;
text-align: right;
transition: all 0.3s ease 0s;
visibility: visible;
}
.usde-logo a img {
width: 122px;
}
.smaller-header .top-right {
padding: 12px 0;
transition: all 0.3s ease 0s;
width: 360px;
}
.smaller-header .top-menu {
height: 0;
opacity: 0;
transition: all 0.3s ease 0s;
visibility: hidden;
}
.smaller-header .usde-logo {
height: 0;
opacity: 0;
transition: all 0.3s ease 0s;
visibility: hidden;
}
.smaller-header a.logo {
padding: 10px 0;
transition: all 0.3s ease 0s;
}
.smaller-header .logo img {
height: 55px;
transition: all 0.3s ease 0s;
}
.smaller-header .primary-nav {
padding-top: 24px;
transition: all 0.3s ease 0s;
}
/* end of header */
/* sidebar */
.side.sidebar-left::after {
width: 185px;
height: 100%;
background-color: #e4e4e4;
content: "";
left: 0;
position: absolute;
top: 0;
}
.side.sidebar-left {
float: none;
position: absolute;
bottom: 0;
top: 0;
width: 185px;
}
.side.sidebar-left .block {
position: relative;
z-index: 1;
padding: 20px;
padding-bottom: 40px;
}
.primary-menu-style hr {
margin-left: -1em;
margin-right: -1em;
}
.primary-menu-style ul {
list-style: outside none none;
margin: 0;
padding: 0;
}
.primary-menu-style ul li {
padding-bottom: 0.5em;
font-size: smaller;
}
.primary-menu-style ul li a {
color: #5b6065;
display: inline;
padding: 0;
}
.primary-menu-style ul.menu li.headTitle {
font-weight: bold;
margin-left: -1em;
margin-right: -1em;
margin-bottom: 0.5em;
padding-bottom: 0.5em;
border-bottom: solid;
border-bottom-color: #9B1120;
border-bottom-width: 1px;
}
.primary-menu-style ul.menu li.title {
font-weight: bold;
margin-left: -1em;
}
ul.menu hr.menu-hr {
background-color: #9B1120;
height: 1px;
margin: 0.25em -1em;
}
.primary-menu-style input {
width: 100%;
}
aside.sidebar-left.side .menuCloseDiv {
position: absolute;
right: 5px;
top: 5px;
cursor: pointer;
}
aside.sidebar-left.side .mobileMenuCloseDiv {
display: none;
}
aside.sidebar-left.side.minimized {
display: none;
}
.mainMenuSelectorBars {
display: none;
cursor: pointer;
}
.mainMenuSelectorBars.minimized {
display: inline;
}
.mobileMainMenuSelectorBars {
cursor: pointer;
display: none;
}
/* end sidebar */
/* footer */
.footer {
background-image: none;
padding: 1em;
background-color: #5b6064;
position: relative;
bottom: 0;
color: #fff;
overflow: hidden;
}
.footer .container {
background-color: transparent;
}
.footer .container::before {
background-color: #5b6064; /* or should it be: #22292f; */
height: auto;
background-color: #22292f;
content: "";
left: 100%;
margin-left: -450px;
position: absolute;
top: 0;
width: 5000px;
z-index: 0;
}
.block_footer ul li a {
color: #fff;
font-size: 12px;
text-transform: uppercase;
}
.block_footer_left {
float: left;
padding-left: 40px;
}
.block_footer_right {
float: right;
padding-right: 40px;
}
/* end footer */
/* main content */
section.one-sidebar {
float: none;
}
.main-container-wrapper {
background: #f4f4f5 none repeat scroll 0 0;
position: relative;
}
.main-container.container::before {
background-image: linear-gradient(to right, rgb(244, 244, 245) 0%, rgb(209, 210, 211) 100%);
content: "";
display: block;
height: 100%;
position: absolute;
left: -80px;
top: 0;
width: 80px;
z-index: 1;
}
.main-container.container::after {
background-image: linear-gradient(to right, rgb(209, 210, 211) 0%, rgb(244, 244, 245) 100%);
content: "";
display: block;
height: 100%;
position: absolute;
right: auto; /* orig: -80px; */
top: 0;
width: 80px;
z-index: -1;
}
.page-header {
border-bottom: 2px solid #a29f9f;
color: #ad172b;
font-family: Arial;
font-size: 25px;
margin: 0 0 20px;
padding-bottom: 10px;
text-transform: uppercase;
}
section.one-sidebar.left-side > .row-inner .region.region-content {
padding: 0 1em 1em 0;
}
section.one-sidebar.left-side > .row-inner {
padding-left: 200px;
}
section.no-sidebars > .row-inner {
padding: 0 1em 1em 1em;
}
/* end of main content */
/* responsive rules */
@media screen and (max-width: 1515px) {
img {
height: auto;
max-width: 100%;
}
}
@media screen and (min-width: 667px) and (max-width: 1315px) {
.container {
width: 100%;
}
.primary-nav {
padding-right: 10px;
}
.logo img {
height: auto;
max-width: 200px;
}
header .container {
width: 98%;
}
.smaller-header .top-right {
width: 260px;
}
}
@media screen and (max-width: 960px) {
a.logo {
padding: 0;
}
.block.block-block.usde-logo {
position: absolute;
right: 10px;
top: 30px;
}
.usde-logo a img {
height: auto;
width: 80px;
}
header {
min-height: 110px;
position: inherit;
}
.top-right {
padding: 0;
width: 100%;
}
.top-menu {
position: absolute;
right: 10px;
top: 8px;
}
.top-menu .menu>li::after {
height: 10px;
top: 7px;
}
.top-menu .menu>li a {
font-size: 12px;
}
.navbar-header {
min-height: auto;
padding: 15px 10px 0;
position: relative;
width: 100%;
}
button.navbar-toggle {
bottom: -26px;
display: block !important;
height: auto !important;
left: auto !important;
margin: 0 !important;
opacity: 1 !important;
padding: 0 !important;
position: absolute;
right: 15px;
top: auto !important;
width: auto !important;
z-index: 100;
}
button.navbar-toggle span {
background-color: #ac172b;
}
.region.region-top-right #HeaderSearchBlock {
padding-right: 50px;
position: relative;
}
.primary-nav {
display: none;
padding: 0;
width: 100%;
}
.primary-nav.mobileNav {
padding: 0;
width: 100%;
}
.mobileNav {
background: #e4e4e4 none repeat scroll 0 0;
}
.mobileNav li {
border-bottom: 1px solid #32373d;
float: left;
padding: 0;
position: relative;
width: 100%;
}
.mobileNav li a {
color: #404145;
display: block;
padding: 10px;
text-align: center;
text-transform: uppercase;
}
.mobileNav li a.active,
.mobileNav li a:hover {
background: #ad172b none repeat scroll 0 0;
color: #fff;
}
.primary-nav.mobileNav {
float: none;
transition: none;
}
.mobileNav .main-menu ul.menu {
float: none;
}
.mobileNav .main-menu ul.menu li {
padding-left: 0;
}
.mobileNav .main-menu li > a {
font-size: inherit;
}
.page-wrapper {
padding-top: 0px;
}
}
@media screen and (min-width: 667px) and (max-width: 960px) {
.smaller-header .top-right {
position: absolute;
right: 0;
top: 15px;
}
.smaller-header button.navbar-toggle {
bottom: 36px !important;
}
}
@media screen and (max-width: 667px) {
.container {
width: 100%;
}
.main-container.container {
min-height: auto !important;
}
.block_footer {
padding: 20px;
width: 100%;
}
.block_footer_left {
padding: 0 0 0 20px;
}
header .container {
width: 100%;
}
.logo img {
height: auto;
max-width: 175px;
}
.for-mobile {
display: block;
}
.for-mobile.more-menu-options-wrap {
padding: 10px;
text-align: right;
}
.closen1, .closen {
color: #ac172b;
cursor: pointer;
position: absolute;
right: 10px;
top: 10px;
z-index: 11;
}
section.one-sidebar {
float: left;
}
.one-sidebar.left-side {
width: 100%;
}
.side.sidebar-left {
background: #e4e4e4 none repeat scroll 0 0;
width: 100%;
position: relative;
}
.primary-nav {
display: none;
padding: 0;
width: 100%;
}
section.one-sidebar.left-side > .row-inner {
padding: 20px;
padding-left: 10px;
}
.side.sidebar-left::after {
display: none;
}
.sidebar-left {
display: none;
}
.region.region-top-right #HeaderSearchBlock {
width: 100%;
}
#HeaderSearchBlock form {
padding: 5px 80px 0 15px;
width: 100%;
}
.more-menu-options {
color: #ad172b;
cursor: pointer;
}
aside.sidebar-left.side .menuCloseDiv {
display: none;
}
aside.sidebar-left.side .mobileMenuCloseDiv {
cursor: pointer;
display: inline;
position: absolute;
right: 5px;
top: 5px;
}
.mainMenuSelectorBars.minimized {
display: none;
}
.mobileMainMenuSelectorBars {
display: inline;
}
aside.side.sidebar-left.showMobileMenu::after {
display: block;
}
aside.sidebar-left.showMobileMenu {
display: block;
}
aside.side.sidebar-left.showMobileMenu.minimized::after {
display: block;
}
aside.sidebar-left.showMobileMenu.minimized {
display: block;
}
}
/* end of responsive rules */
/* MIS styles */
label {
display: inline-block;
}
label {
font-weight: normal;
}
label:empty {
display: none !important;
}
pre {
background-color: inherit;
color: inherit;
border: none;
font: inherit;
padding: 0;
margin: 0;
white-space: pre-wrap;
overflow-wrap: break-word;
}
input[type="submit"]:not(.btn), input[type="button"]:not(.btn), input[type="reset"]:not(.btn), button:not(.btn) {
height: initial;
}
input[type="file"]:focus, input[type="checkbox"]:focus, input[type="radio"]:focus {
outline-offset: 0;
}
hr {
background: none repeat scroll 0 0 #BABABA;
border: medium none;
height: 5px;
margin: 0;
padding: 0;
}
.clear {
clear: both;
}
.invisibleContent {
visibility: hidden;
display: none;
}
#InvisibleContent {
visibility: hidden;
display: none;
}
#FeedbackDialog {
position: relative;
}
#FeedbackDialog .dialogContent {
position: absolute;
top: 2em;
bottom: 2em;
left: 0;
right: 0;
padding: 1em;
}
#FeedbackDialog textarea {
width: 100%;
height: 100%;
}
#FeedbackDialog .buttonContent {
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 2em;
}
#FeedbackDialog .buttonContent button {
margin: 0 1em;
}
#FeedbackDialog .buttonContent .feedbackCancel {
float: right;
}
#DevelopmentHeaderNote {
font-size: small;
margin-right: 1em;
padding: 0.5em;
}
/* end main body */
/* flash notices */
.error, .notice, .warning {
border: 1px solid #bbb;
padding: 1em;
font-weight: bold;
text-align: center;
margin-bottom: 1em;
}
.error {
color: #D8000C;
background-color: #FFBABA;
}
.error, .warning {
background-repeat: no-repeat; /* to override system.allcombined */
background-position: calc(100% - 10px) 5px;
}
.warning {
color: #a39709;
background-color: #FF8;
}
.notice {
color: #4F8A10;
background-color: #DFF2BF;
}
/* end flash notice*/
/* bootstrap overrides */
@media print {
a[href]::after {
content: "" !important;
}
}
/* end bootstrap overrides */
/* in app login page styles */
#login {
padding-top: 1em;
text-align: center;
}
#login .greeting {
font-weight: bold;
font-size: 16px;
}
#login_form {
width: 400px;
text-align: left;
margin: 1em auto;
border: 1px solid #4A637B;
}
#login_form .prop {
border-bottom: 0;
padding: 0 10px;
}
#login_form #action_buttons {
padding: 10px;
}
#login_form h2 {
margin: 0;
border: 0;
padding: 5px 10px;
font-size: 14px;
background-color: #000;
color: #fff;
margin-bottom: 1em;
}
#login_dialog {
margin: 1em auto;
width: 235px;
}
#login_dialog .input input {
width: 100%;
}
/* end in app login page styles */
/* mis forms styles */
.prop {
overflow: auto;
padding: 1em 0;
page-break-inside: avoid;
}
.prop_label {
font-weight: bold;
}
.prop .label {
color: inherit;
font-size: 100%;
text-align: inherit;
padding: 0;
}
.show .prop {
padding: 0 0 1em 0;
}
.form {
padding: 1em;
}
.title {
font-weight: bold;
}
.actions, #action_buttons {
padding: 1em 0;
}
.actions:empty, #action_buttons:empty {
display: none;
}
.name {
clear: both;
float: left;
height: 100%;
padding-right: 5px;
text-align: right;
width: 15%;
font-weight: bold;
}
.value {
float: none;
}
.prop .value {
float: left;
width: 80%;
}
.prop .prop .name {
width: 10%;
}
.form .fields .prop .value .errormsg {
display: inline;
position: relative;
}
#content-body .prop {
border-bottom: 0;
}
.textAreaError .errormsg {
top: -7px;
}
.field_with_errors > input, .field_with_errors > textarea, .field_with_errors > select, .field_with_errors > .poa, .field_with_errors > .personList, .field_with_errors > .radio_buttons, .input_error > .radio_buttons, .field_with_errors > .check_boxes, .input_error > .check_boxes, .field_with_errors > .select2-container {
outline: 1px solid #f00;
margin: 1px;
}
.input_error .radio_option .field_with_errors input, .input_error .radio_button_option .field_with_errors input, .input_error .check_box_option .field_with_errors input {
outline: none; /* to stop the double highlight that would be caused by the above rule */
}
.input_error .radio_option .field_with_errors, .input_error .radio_button_option .field_with_errors, .input_error .check_box_option .field_with_errors {
display: inline-block;
}
.personList {
display: inline-block;
}
.note {
font-style: italic;
padding: 10px;
}
*[disabled] {
background-color: #EEE !important;
color: #545454 !important;
}
input[type=submit]:not(.btn), input[type=button]:not(.btn), input[type=reset]:not(.btn), button:not(.btn), a.btn_link:not(.btn), a.btn_link:link:not(.btn), a.btn_link:visited:not(.btn), a.btn_link:active:not(.btn) {
background-color: #B1C3D8;
border: 1px solid #4A637B;
color: #000000;
font-family: Tahoma,Arial,Helvetica,sans-serif;
overflow: visible;
padding: 2px 8px;
text-align: center;
text-decoration: none;
vertical-align: middle;
line-height: normal;
}
input[type=submit]:hover:not(.btn), input[type=button]:hover:not(.btn), input[type=reset]:hover:not(.btn), button:hover:not(.btn), a.btn_link:hover:not(.btn) {
background-color: #19355E;
border: 1px solid #19355E;
color: #FFF;
}
input, select, textarea {
background-color: #E7EFFC;
border: 1px solid #19355E;
padding-bottom: 2px;
}
input.dirty, select.dirty, textarea.dirty {
outline: 2px solid yellow;
margin: 2px;
}
.required {
color: #D8000C;
}
.field_error {
color: #D8000C;
}
.poa {
display: flex;
align-items: center;
}
.prop .poa .prop {
padding-top: 0;
padding-bottom: 0;
}
.poa .prop {
display: inline;
float: left;
}
.poa .spacer {
display: inline;
padding: 0 10px;
}
.prop .poa .spacer {
padding-top: 1.5em;
}
.poa .spacer > br {
display: none;
}
.radio_buttons, .check_boxes {
display: inline-block;
}
.radio_buttons .radio_option {
display: inline-block;
position: relative;
}
.radio_buttons .radio_option, .radio_buttons .radio_button_option, .check_boxes .check_box_option {
background-color: #E7EFFC;
padding: 3px 5px;
white-space: nowrap;
overflow: hidden;
vertical-align: top;
}
.radio_buttons .radio_option:not(:first-of-type){
padding-left: 1em;
}
.radio_buttons.disabled .radio_option, .radio_buttons.readonly .radio_option, .radio_buttons.readonly .radio_button_option, .check_boxes.readonly .check_box_option {
background-color: #EEE;
}
.radio_buttons .radio_label, .radio_buttons .radio_button_label, .check_boxes .check_box_label {
line-height: 20px;
margin-left: 3px;
cursor: pointer;
white-space: normal;
margin-bottom: 5px;
display: inline-block;
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pre {font-family: Helvetica;} fieldset {border: solid thin black;}</style><base href="https://misportal.jlab.org"><div align="left">
<h1 class="lesson_title">Nitrogen Dewar Tip-Over - Ames National Laboratory (Ames)</h1>
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<h3>Statement of Lessons Learned</h3>
<pre>Before moving large, top-heavy items, review the route of travel to identify any hazards that may exist. If wheeled devices are used, pay careful attention to surface transitions and adequate passage through doorways. Bring any safety concerns to the attention of Environmental, Safety and Health or Laboratory Leadership so potential issues may be addressed in a timely manner.</pre>
<h3>Discussion of Activities</h3>
<pre>On Monday, February 27, 2023, an Ames contributor attempted to move a full, 230 Liter (L), 500-pound, round-base, five-caster liquid nitrogen (LN2) Dewar (Image 1 and 2) from an outside storage location to an area inside the building. Using one of two handles attached to the Dewar, the contributor was pulling it across a door's threshold when one of the casters got stuck causing the Dewar to tip over, pinning the contributor beneath it. Two Ames employees, on the second floor, heard pleas for help from below. Upon arrival the two found that the contributor had been able to free themselves. One Ames employee took the contributor to occupational medicine for evaluation. The other employee contacted the ESH Coordinator and cryogen facility personnel to assist with the incident. The scene was assessed, and no emergency was declared. 

 <img src="https://misportal.jlab.org/ll/lessons/1201/show_attachment_content?attachment_id=6827" width="900px"></pre>
<h3>Analysis</h3>
<pre>The Dewar was a standard configuration with five casters and two handles. None of these were damaged or inoperable. There are only two Dewars with this configuration in use at Ames; all other Dewars have a wider base or are on a cart providing a more stable configuration (See Image 3). 

 <img src="https://misportal.jlab.org/ll/lessons/1201/show_attachment_content?attachment_id=6828" width="250px">

LN2 Dewars typically have a high center of gravity. This Dewar's configuration, its total weight, the positioning of the casters in relation to the handles, and the force exerted to pull the Dewar, create the tipping issue. Interviews during the investigation determined that this Dewar's configuration was awkward, but no one had brought this to the attention of Environmental, Safety and Health or Laboratory Leadership. 

One of the Dewar's handles was located directly over a single caster (Image 1). When pulling the Dewar via this handle, if the caster's forward motion is suddenly stopped it creates a vertical pivot point whereby the force applied causes the Dewar to become unbalanced. A better option is to use the second handle, located over two casters (Image 2). If one of these casters were stopped the force would cause the other four casters to pivot around the obstruction and keep rolling. Neither the contributor nor their supervisor was aware of the special handling procedure.

The contributor had completed "Safe Use of Cryogen" training, which covers transport of Dewars. The training indicates that Dewars should be pushed, when possible, but this is only considered a recommendation.

The contributor had previous experience moving this type of Dewars along this route and had no prior issues. 

The route of travel was through a door that had a hold-open arm and a ½" threshold plate.</pre>
<h3>Recommended Actions</h3>
<pre>The contributor was transported to McFarland Clinic and offsite medical facility for further evaluation. It was determined that there were no fractures or other serious injury. The contributor was sent home but asked to return for follow-up evaluations. 

The Dewar was secured to the loading dock and taken out of service until it could be evaluated for operability. 

The Ames Industrial Hygienist measured the oxygen content in the stairwell with a 4-gas monitor to ensure that the atmosphere was safe. The monitor indicated normal oxygen levels in the stairwell. 

ESH placed a tag on the single caster handle side of the Dewar indicating not to pull from that side. 

The research group instituted a two "people-to-move" policy for these types of Dewars. 

Dewars of this configuration will be exchanged for Dewars with a square caster base (Image 3) which affords greater stability. 

The ½" threshold will be replaced with ¼" plate to reduces the height obstacle and allow casters to more easily bridge the obstacle. 

A plan is being developed to install electromagnetic holder on interior fire doors.

A new "Transporting Dewars" section was added to the "Safe Use of Cryogens" training to increase awareness on proper handling, body placement, identify incorrect methods of transport, and increase situational awareness (two-person, best route, etc.). 

The Ames National Laboratory Director will remind staff to bring any concerns to the attention of ESH or Laboratory Leadership so potential issues may be addressed in a timely manner.</pre>
<h3>JLab Preventative Measures</h3>
<pre></pre>
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<legend class="header_color">Summary</legend>
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<td class="bold nowrap">Lesson ID:</td>
<td>1201</td>
</tr>
<tr>
<td class="bold nowrap">Status:</td>
<td>OK</td>
</tr>
<tr>
<td class="bold nowrap">Doc ID:</td>
<td class="nowrap">2023-JLAB-1201</td>
</tr>
<tr>
<td class="bold nowrap">Priority:</td>
<td class="nowrap">Caution</td>
</tr>
<tr>
<td class="bold nowrap">Safety Related:</td>
<td class="nowrap">YES</td>
</tr>
<tr>
<td class="bold nowrap">Originator:</td>
<td class="nowrap">Mary Jo Bailey (mbailey)</td>
</tr>
<tr>
<td class="bold nowrap">Issued:</td>
<td class="nowrap">3/24/2023 11:31 am</td>
</tr>
<tr>
<td class="bold nowrap">Approved By:</td>
<td class="nowrap">Mary Jo Bailey (mbailey)</td>
</tr>
<tr>
<td class="bold nowrap">Approved On:</td>
<td class="nowrap">3/24/2023 1:01 pm</td>
</tr>
<tr>
<td class="bold nowrap">Source:</td>
<td class="nowrap">
DOE Corporate Reporting Databases
</td>
</tr>
<tr>
<td class="bold nowrap">Location:</td>
<td class="nowrap">AMES</td>
</tr>
<tr>
<td class="bold nowrap">Cost Savings:</td>
<td class="nowrap"></td>
</tr>
<tr>
<td class="bold nowrap">Contact:</td>
<td>Ryan Wyllie, Occupational Safety Specialist, rwyllie@ameslab.gov (515)294-9769 </td>
</tr>
<tr>
<td class="bold nowrap">Queued Emails:</td>
<td>129</td>
</tr>
<tr>
<td class="bold nowrap">Sent Emails:</td>
<td>0</td>
</tr>
<tr>
<td class="bold nowrap">Viewings:</td>
<td>18 times</td>
</tr>
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</fieldset>
</td>
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<legend class="header_color">Attachments</legend>
<ul>
<li><a target="_blank" href="https://misportal.jlab.org/ll/lessons/1201/show_attachment_content?attachment_id=6826">opes-share AMES - Dewar Tipover.pdf</a></li>
<li><a target="_blank" href="https://misportal.jlab.org/ll/lessons/1201/show_attachment_content?attachment_id=6827">opes-share AMES - Dewar Tipover (Photo 1).jpg</a></li>
<li><a target="_blank" href="/ll/lessons/1201/show_attachment_content?attachment_id=6828">opes-share AMES - Dewar Tipover (Photo 2).jpg</a></li>
</ul>
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<legend class="header_color">Hazard Issues</legend>
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<li>
Other: Ergonomics
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<li>
Chemicals
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<li>
Cryogenic Material - Gas or Liquid
</li>
<li>
Hazardous Material Transport - On or Off Site
</li>
<li>
Material Handling Equipment
</li>
<li>
Powered Industrial Trucks - Forklifts
</li>
</ul>
</fieldset>
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<legend class="header_color">Skills</legend>
<ul>
<li>SAF502: Forklift Operator</li>
<li>SAF912: CHEMICAL SAFETY TRAINING</li>
<li>MED007: Ergonomics of Lifting</li>
</ul>
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<legend class="header_color">Distribution/Notification</legend>
<ul>
<li>*Division Safety Officers (DSOs)</li>
<li>*Safety Wardens</li>
<li>*DOE Notification</li>
<li>*ESH&Q Liaisons</li>
</ul>
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