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valign="top">Lesson Learned "Underground Electrical Power Line Damaged - Office of Secure Transportation (OST)"</td>
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valign="top"><strong><span
style="font-size: 18px">INTERNAL MEMO</span></strong></td>
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valign="top"><span style="font-size: 14px">
<strong>December 9, 2019</strong><br>
<strong>Sent on behalf of ESH&Q</strong><br>
<strong>SUBJECT:</strong> Lesson Learned "Underground Electrical Power Line Damaged - Office of Secure Transportation (OST)"<br>
<strong>CONTACT:</strong> mbailey@jlab.org
</span></td>
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<td><a href="https://misportal.jlab.org/ll/index.jsf?function=view&lessonId=1123">Underground Electrical Power Line Damaged - Office of Secure Transportation (OST)</a></td>
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<h2 style="white-space:nowrap">Statement of Lessons Learned</h2>
<pre>A backhoe was being used to dig a trench for a utility line for a new generator at Office of Secure Transportation (OST) Aviation. During the excavation, an underground electrical power line was stretched, but not cut all the way through. Power was lost to one of the buildings at the OST Aviation Campus. No one was injured in this incident. </pre>
<h2 style="white-space:nowrap">Discussion of Activities</h2>
<pre>The facility is owned by Kirtland Air Force Base (KAFB) but is used by the OST under a real estate permit agreement. All excavation projects on the property must be reviewed and approved by the KAFB Civil Engineering Office and Dig Permits must be received and approved by KAFB as well before work can begin.
Enterprise Electric was the general contractor for the work and Unified Contractor was the subcontractor performing the utility digging.
KAFB Dig Permit Process requires the contractor, performing the excavation, to mark an outline, in white paint, of the area to be excavated. Then they are to submit their paperwork to KAFB for a dig permit. KAFB then goes to the job site and reviews the area within the marked white boundary. Different technicians, representing the different utilities, then come out to mark their lines. They bring with them the utility drawings that KAFB has on file for the area. Some utilities mark only based on the drawings, and others attempt to "trace" their lines. OST is not required to be present when KAFB marks the utility lines and KAFB is not required to notify OST nor the contractor when they go out to mark their lines. The contractor is notified when the marking is complete and, the dig permit is approved. The contractor then picks up a copy of the dig permit and only then can activities begin.
The KAFB Dig Permit states, on the first page, in red, "I understand that the exact location of a buried line may be located approximately 4" on either side of the marked location and that I am required to pothole within this area."
The area being excavated did not have visible markings identifying any existing utility lines. (It could not be determined if they were never marked, or if markings had been removed during the excavation activities.)
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<h2 style="white-space:nowrap">Analysis</h2>
<pre>1. Unified Contractor submitted a dig permit to KAFB in January 2019, and the dig permit was approved on February 27.
2. An additional series of photographs was given to the Unified Contractor from the last time the area was excavated to help identify underground utilities.
3. Excavation started in early March. Junipers, in a curbed area, were removed to allow for trenching and placement of the new utility line.
4. There was no evidence that the damaged electrical line was ever identified by KAFB's dig permit markings. The technician claimed he marked the area, but it did not appear this particular line was marked, as it was not marked in other areas.
5. OST's engineer requested additional clarification from KAFB of responsibilities/ liabilities when utility lines are damaged. It was determined that if a line is marked by KAFB and is within /-4" of the marking, the contractor is liable for the repair. If the line is not marked KAFB pays for the repair.
6. After discussing the situation with all parties, and reviewing the onsite evidence, the Unified Contractor sought additional funding to repair the damaged line since it was impossible to prove that the line was marked by KAFB personnel. However, given the defensiveness of the technicians, the urgency of the situation, and the cost of the repair, it was prudent to seek internal funding as the best course of action.
7. Power was lost on to the building on March 19, and was not restored until March 27.</pre>
<h2 style="white-space:nowrap">Recommended Actions</h2>
<pre>1. Require white field markings to denote a "larger than actual" work area.
2. Immediately ,upon approval of a dig permit, provide OST an opportunity to review the marked utilities compared to known, as-built drawings, and document with photographs as appropriate. This is to be a joint activity that includes the project manager and the contractor, although in some cases, the contractor will be held responsible to verify underground utilities.
3. Verify that the contractor has the utility spot maps from the dig permit, in the field, at the job site.
4. Ensure the construction superintendent has KAFB's Customer Service telephone number readily available.
5. Install warning tape on all future projects involving new underground utilities. Update as-built drawings and provide fed back to KAFB Drafting department so all records are kept up to date.</pre>
<h2 style="white-space:nowrap">JLab Preventive Measures</h2>
<pre>For any mechanized excavation, or any excavations using hand tools that penetrate the ground greater than 12 inches,Jefferson Lab requires a "Digging and Excavations Permit" submitted seven days prior to the work start date . The permit is valid for 14 days from the approval date or for the duration of the project when the group performing the work maintains continuous possession of the site, the original location markings are intact, and there has been no changes to the proposed excavation location (any change requires a new permit). Excavation, digging, or boring into soil at Jefferson Lab is permitted only after utilities have been located and marked by a competent person. See Facilities Management and Logistics' "Digging and Excavations Permit Procedure" at https://www.jlab.org/fm/Digging_Permit.pdf for more information.</pre>
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<h2>Comments</h2>
<h5 style="white-space:nowrap">12/9/2019 2:35:17 PM by Bailey, Mary Jo</h5>
<pre>Submitted to those with SAF502: FORKLIFT OPERATOR
SAF603N: NFPA-70E BASIC ELECTRICAL SAFETY</pre>
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<legend>Summary</legend>
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<td class="label" nowrap>Lesson ID:</td>
<td class="dataval">1123</td>
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<td class="label" nowrap>Status:</td>
<td class="dataval">OK</td>
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<td class="label" nowrap>Doc ID:</td>
<td class="dataval">2019-JLAB-1123</td>
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<td class="label" nowrap>Priority:</td>
<td class="dataval">Info</td>
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<td class="label" nowrap>Safety Related:</td>
<td class="dataval">YES</td>
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<td class="label" nowrap>Originator:</td>
<td class="dataval">Bailey, Mary Jo</td>
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<td class="label" nowrap>Issued:</td>
<td class="dataval">12/9/2019 2:17:55 PM</td>
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<td class="label" nowrap>Approved By:</td>
<td class="dataval">Bailey, Mary Jo</td>
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<tr class="row">
<td class="label" nowrap>Approved On:</td>
<td class="dataval">12/9/2019 2:35:17 PM</td>
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<td class="label">Source:</td>
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DOECRD
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<td class="label" nowrap>Location:</td>
<td class="dataval">Other</td>
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<td class="label" nowrap>Cost Savings:</td>
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<td class="label" nowrap>Contact:</td>
<td class="dataval">Dennis Curtis, OST, (505) 845-5815</td>
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<td class="label" nowrap>Queued Emails:</td>
<td class="dataval">328</td>
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<td class="label" nowrap>Sent Emails:</td>
<td class="dataval">0</td>
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<td class="label" nowrap>Viewings:</td>
<td class="dataval">1 times</td>
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<legend>Hazard Issues</legend>
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<li>Electricity</li>
<li>Material Handling Equipment</li>
<li>Other: Blind/Dig Hazards</li>
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<legend>Skills</legend>
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<li>SAF502: FORKLIFT OPERATOR</li>
<li>SAF603N: NFPA-70E BASIC ELECTRICAL SAFETY</li>
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<legend>Distribution/Notification</legend>
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<li>*Division Safety Officers (DSOs)</li>
<li>*Safety Wardens</li>
<li>*DOE Notification</li>
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