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<p style="margin: 0in;"><span style="mso-bidi-font-weight: bold;"><font color="#000000" face="Calibri" size="3">Davis Besse has been performing Shield Building Concrete mitigation for the past few years due to Laminar cracks discovered on the shield building.
<span style="mso-spacerun: yes;"> </span>Dose accumulated per individual is low level (gamma & neutron) and dose rates vary based on location where the excavating of concrete is being removed.</font></span></p>
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<p style="margin: 0in;"><span style="mso-bidi-font-weight: bold;"><font color="#000000" face="Calibri" size="3">Work Scope includes scaffolding to work location, excavation of concrete, cleaning /replacing rebar and re-installing concrete to prevent any additional
propagation of cracks. </font></span></p>
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<p style="margin: 0in -9pt 0in 0in;"><b><font color="#000000" face="Calibri" size="3">The goal of this question will be to ask if there are any other Nuclear facilities performing similar
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<p style="margin: 0in -9pt 0in 0in;"><b><font color="#000000" face="Calibri" size="3">repairs ?
<span style="mso-spacerun: yes;"> </span>What innovative / creative tools or techniques are being used to reduce personnel exposure?</font></b></p>
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<p style="margin: 0in;"><b><font color="#000000" face="Calibri" size="3">Current Dose Reduction Techniques Communicated / Implemented
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<p style="margin-top: 0in; margin-bottom: 0in; mso-list: l0 level1 lfo1;"><span style="mso-fareast-font-family: "Times New Roman";">Utilize only necessary personnel to perform work.</span></p>
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<p style="margin-top: 0in; margin-bottom: 0in; mso-list: l0 level1 lfo1;"><span style="mso-fareast-font-family: "Times New Roman";">Minimize time in elevated dose work areas (Excavated concrete areas)</span></p>
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<p style="margin-top: 0in; margin-bottom: 0in; mso-list: l0 level1 lfo1;"><span style="mso-fareast-font-family: "Times New Roman";">Maintain distance from the shield building as practical when not actively performing work (Excavated concrete areas).</span></p>
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<p style="margin-top: 0in; margin-bottom: 0in; mso-list: l0 level1 lfo1;">Different concrete forms are being utilized that will reduce the effort and time to install and remove forms thereby reducing personnel exposure.</p>
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<p style="margin-top: 0in; margin-bottom: 0in; mso-list: l0 level1 lfo1;">Multiple tooling has been used to remove concrete / clean rebar.
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<p style="margin-top: 0in; margin-bottom: 0in; mso-list: l0 level1 lfo1;">A crane has been installed on top of the shield building to increase efficiency for movement of material.
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