[et_pb_section fb_built=”1″ custom_padding_last_edited=”on|tablet” _builder_version=”4.16″ _module_preset=”default” positioning=”none” horizontal_offset_tablet=”” horizontal_offset_phone=”” horizontal_offset_last_edited=”on|tablet” custom_margin=”0px||||false|false” custom_margin_tablet=”” custom_margin_phone=”” custom_margin_last_edited=”on|desktop” custom_padding=”0px|||0px|false|false” custom_padding_tablet=”|||25px|false|false” custom_padding_phone=”” da_disable_devices=”off|off|off” global_colors_info=”{}” custom_padding__hover_enabled=”on|desktop” custom_padding__hover=”0px|||0px|false|false” theme_builder_area=”post_content” da_is_popup=”off” da_exit_intent=”off” da_has_close=”on” da_alt_close=”off” da_dark_close=”off” da_not_modal=”on” da_is_singular=”off” da_with_loader=”off” da_has_shadow=”on”][et_pb_row _builder_version=”4.16″ _module_preset=”default” width=”100%” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” text_font_size=”16px” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n
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Maintenance involves activities that help keep\u00a0<\/span><\/span>assets<\/span>\u00a0<\/span>in good working order<\/span>,\u00a0<\/span><\/span>so\u00a0<\/span><\/span>they<\/span>\u00a0<\/span>will\u00a0<\/span><\/span>operate<\/span>\u00a0<\/span>as intended. \u00a0<\/span><\/span><\/span>Proactive maintenance activities are those that are carried out in a planned fashion. Proactive\u00a0<\/span><\/span>m<\/span>aintenance\u00a0<\/span><\/span>categories include:<\/span><\/span> <\/span><\/p>\n [\/et_pb_text][et_pb_accordion _builder_version=”4.16″ _module_preset=”default” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Routine or Planned Maintenance Examples:” open=”on” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n An example of this type of activity is a planned sewer cleaning program. The system may decide to clean 1 mile of sewer every month, and a plan can be developed to move through the sewer system to get this work completed.\u00a0<\/em><\/p>\n Cleaning the forebay after a rain event is another example of a planned maintenance activity.\u00a0<\/em><\/p>\n [\/et_pb_accordion_item][\/et_pb_accordion][et_pb_text _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_text][et_pb_accordion _builder_version=”4.16″ _module_preset=”default” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Predictive Maintenance Examples:” open=”on” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n Machine vibration is continually monitored through sensors\u00a0<\/span><\/span>that are attached to<\/span><\/span>\u00a0the machine<\/span><\/span>.\u00a0\u00a0<\/span><\/span>The sensors<\/span><\/span>\u00a0<\/span><\/span>gather data to assess and monitor machine health quickly and accurately<\/span><\/span>.\u00a0\u00a0<\/span><\/span>Sensors are used to\u00a0<\/span><\/span>quantify and report<\/span><\/span>\u00a0how smooth or rough the machine is running.<\/span><\/span>\u00a0<\/span><\/span>Vibration analysis and monitoring can be used to discover and diagnose a wide range of problems related to rotating equipment<\/span><\/span>.<\/span><\/span>\u00a0<\/span><\/em><\/p>\n Another example is close-circuit televising (CCTV) of sewer line or placing a condition monitor insied a pipeline to determine wall thickness or the presence of holes in the pipe.\u00a0<\/span><\/em><\/p>\n [\/et_pb_accordion_item][\/et_pb_accordion][et_pb_text _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_text][et_pb_accordion _builder_version=”4.16″ _module_preset=”default” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Preventive Maintenance Example: ” open=”on” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n For example, if the system examines a sewer with a camera and it shows significant corrosion of a concrete pipe, the system may wish to add a chemical to reduce sewer gas build up. Another example is a pump<\/span><\/span>\u00a0t<\/span><\/span>hat is showing signs of wear in the<\/span><\/span>\u00a0b<\/span><\/span>earings. The\u00a0<\/span><\/span>system<\/span><\/span>\u00a0can replace the<\/span><\/span>\u00a0<\/span><\/span>bearings before they fail so that the<\/span><\/span>\u00a0<\/span><\/span>work may be performed when it is<\/span><\/span>\u00a0<\/span><\/span>advantageous for the\u00a0<\/span><\/span>system<\/span><\/span>\u00a0(e.g., during<\/span><\/span>\u00a0<\/span><\/span>business hours, when an operator is on<\/span><\/span>\u00a0<\/span><\/span>duty, and when spare parts can be<\/span><\/span>\u00a0<\/span><\/span>ordered ahead of\u00a0<\/span><\/span>ti<\/span><\/span>me<\/span><\/span>.)<\/span><\/span>\u00a0<\/span><\/span>Watering plants at the beginning of the asset\u2019s life in a green infrastructure project could also be considered preventive maintenance.<\/span><\/span><\/em><\/p>\n [\/et_pb_accordion_item][\/et_pb_accordion][et_pb_text _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_text][et_pb_accordion _builder_version=”4.16″ _module_preset=”default” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Warranty-Related Maintenance Example:” open=”on” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n Warranty maintenance is often the systems responsibility.\u00a0<\/span><\/span>However, in the case of Johnson County, KS\u00a0<\/span><\/span>the\u00a0<\/span><\/span>contractor\u00a0<\/span><\/span>has to<\/span><\/span>\u00a0sign a maintenance bond for the first three years and then responsibility is turned over to the city.\u00a0<\/span><\/span>Before the\u00a0<\/span><\/span>maintenance can be turned over, i<\/span><\/span>t needs to be certified that it is working by an engineer.<\/span><\/span>\u00a0<\/span><\/span>\u00a0<\/span><\/em><\/p>\n [\/et_pb_accordion_item][\/et_pb_accordion][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” text_font_size=”16px” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n Reactive maintenance activities are those that are completed after the asset fails to meet the desired level of service or fails to function at all. Reactive maintenance categories include:<\/span><\/span><\/p>\n [\/et_pb_text][et_pb_accordion _builder_version=”4.27.6″ _module_preset=”default” body_font_size=”16px” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Corrective\/Reactive Maintenance ” open=”on” _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n When a water line breaks, staff must repair the line\u00a0<\/span><\/span>immediately<\/span>\u00a0<\/span>to avoid as much water loss and disruption of services as possible.<\/span><\/span>\u00a0<\/span><\/p>\n [\/et_pb_accordion_item][et_pb_accordion_item title=”Backlog Maintenance ” _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content” open=”off”]<\/p>\n During a weather event, routine maintenance can get behind schedule. Use\u00a0<\/span><\/span>additional<\/span>\u00a0<\/span>time to get caught up on repair or preventative maintenance to ensure assets are running at\u00a0<\/span><\/span>optimal<\/span>\u00a0<\/span>levels.<\/span><\/span>\u00a0<\/span><\/p>\n [\/et_pb_accordion_item][\/et_pb_accordion][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n Different types\u00a0of assets need different ratios of proactive and reactive maintenance. For gray assets,\u00a0there\u00a0is\u00a0enough historical information to\u00a0establish\u00a0a best management practice of 80 percent planned maintenance (including the categories of planned, preventive, and warranty-related) and 20 percent reactionary (corrective) maintenance. For green infrastructure, data is still needed to define best management practices. However, for both green and gray assets, the type of asset, its risk level, and its replacement cost must be considered when\u00a0optimizing\u00a0maintenance funds.<\/span>\u00a0<\/span><\/p>\n Risk<\/span>\u00a0should be a factor in\u00a0determining\u00a0how much to invest in maintenance for each asset. The maintenance needs for green assets are often highly dependent on the specific location, rather than the asset type,\u00a0whereas\u00a0gray assets\u00a0maintenance planning may rely on asset type, amount of use, and location.\u00a0<\/span>\u00a0<\/span><\/p>\n For\u00a0low-risk\u00a0gray\u00a0assets, the most economical option\u00a0might\u00a0be to allow the\u00a0asset\u00a0to fail. This allows the full life span of the asset to be achieved. This management strategy is called \u201crun to\u00a0failure,\u201d or managed failure. In this case, the operations staff are choosing to let the asset run until it fails, at which time it is repaired, rehabilitated, or replaced.\u00a0In contrast, green assets can become more self-sustaining over time,\u00a0so\u00a0staff might be able to reduce\u00a0the frequency of planned maintenance.\u00a0<\/span>\u00a0<\/span><\/p>\n A companion activity to maintenance is\u00a0monitoring,\u00a0which includes inspection. Monitoring can help\u00a0determine\u00a0when maintenance should be performed. Monitoring can:<\/span>\u00a0<\/span><\/p>\n Monitoring and inspection can\u00a0support adjustments to operation and maintenance plans\u00a0by using data collected to inform utility staff of attention that assets may need. For example, if a gray asset is leaking oil, that could\u00a0impact\u00a0the frequency in which the asset is\u00a0maintained. Additionally, if a rain garden is growing faster than\u00a0anticipated,\u00a0maintenance activities may be able to become more infrequent.<\/span>\u00a0<\/span><\/p>\n To\u00a0know the best way to maintain the asset, it is important to collect maintenance data.\u00a0This data should include the costs for any maintenance activities conducted. Maintenance data can aid informed decision-making. Data can also be used to improve decision-making after failures.<\/span>\u00a0<\/span><\/p>\n WRF\u2019s Asset Management Framework for Forested and Natural Assets provides\u00a0example\u00a0of maintenance activities\u00a0required\u00a0for natural assets as shown below.<\/span>\u00a0<\/span><\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” theme_builder_area=”post_content” custom_padding=”0px|||||” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][dvmd_table_maker tbl_row_header_count=”0″ tbl_chead_cell_color=”#2ea3f2″ _builder_version=”4.16″ _module_preset=”default” tbl_chead_text_font=”|700|||||||” background_color=”#000000″ border_width_all=”2px” border_color_all=”RGBA(0,0,0,0)” locked=”off” global_colors_info=”{}” border_width_all__hover=”2px” border_width_all__hover_enabled=”on|hover” theme_builder_area=”post_content”][dvmd_table_maker_item col_label=”Natural Asset Type” col_content=”Natural Asset Type Restored Stream Predictive and preventative maintenance – Jim Smith, Director, Infrastructure Planning, Louisville Water Company, Louisville, KY<\/p>\n [\/et_pb_text][et_pb_video src=”https:\/\/youtu.be\/N5DateM4rBs” _builder_version=”4.16″ _module_preset=”default” border_radii=”on|25px|25px|25px|25px” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_video][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n The importance of maintenance – David Montgomery, SCADA Manager, Albuquerque Bernalillo County Water Utility Authority, Albuquerque, NM<\/p>\n [\/et_pb_text][et_pb_video src=”https:\/\/youtu.be\/Vx1WFqgCZ2U” _builder_version=”4.16″ _module_preset=”default” border_radii=”on|25px|25px|25px|25px” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_video][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" Maintenance Types Maintenance involves activities that help keep\u00a0assets\u00a0in good working order,\u00a0so\u00a0they\u00a0will\u00a0operate\u00a0as intended. \u00a0Proactive maintenance activities are those that are carried out in a planned fashion. Proactive\u00a0maintenance\u00a0categories include: An example of this type of activity is a planned sewer cleaning program. The system may decide to clean 1 mile of sewer every month, and a plan can be developed to move through the sewer system to get this work completed.\u00a0 Cleaning the forebay after a rain event is another example of a planned maintenance activity.\u00a0Machine vibration is continually monitored through sensors\u00a0that are attached to\u00a0the machine.\u00a0\u00a0The sensors\u00a0gather data to assess and monitor machine health quickly and accurately.\u00a0\u00a0Sensors are used to\u00a0quantify and report\u00a0how smooth or rough the machine is running.\u00a0Vibration analysis and monitoring can be used to discover and diagnose a wide range of problems related to rotating equipment.\u00a0 Another example is close-circuit televising (CCTV) of sewer line or placing a condition monitor insied a pipeline to determine wall thickness or the presence of holes in the pipe.\u00a0For example, if the system examines a sewer with a camera and it shows significant corrosion of a concrete pipe, the system may wish to add a chemical to reduce sewer gas build up. Another […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-6877","page","type-page","status-publish","hentry"],"yoast_head":"\n\n
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WRF<\/span>‘s Asset Management Framework for Forested and Natural Assets provides\u00a0<\/span><\/span>example<\/span>\u00a0<\/span>of maintenance activities\u00a0<\/span><\/span>required<\/span>\u00a0<\/span>for natural assets as shown below.<\/span><\/span>\u00a0<\/span><\/h4>\n
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\nWildfire
\nErosion on trails
\nCattle grazing
\nLarge storms
\nImpervious surface
\nCattle grazing” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=”Maintenance Activities” col_content=”Maintenance Activities
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\nMinimize the likelihood of large, intense fires which can result in high consequence, massive sediment and debris flows into source waters and reservoirs
\nMinimize sedimentation to reservoirs and reduce suspended solids in source water
\nMinimize nutrient loads into streams which reduces likelihood of algae blooms
\nStabilizes the stream bank which minimizes erosion
\nMaintains adequate land area for target recharge rates
\nMaintains stable ground vegetation which slows runoff and allows for increasing percolation and recharge” _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/dvmd_table_maker_item][\/dvmd_table_maker][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ _builder_version=”4.16″ _module_preset=”default” width=”100%” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”1_2″ _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.16″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n