https://www.designingbuildings.co.uk/w/index.php?action=history&feed=atom&title=Planned_preventative_maintenance_PPM 2026-05-07T14:19:56Z Revision history for this page on the wiki MediaWiki 1.17.4 https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=303229&oldid=prev 2025-05-29T12:00:40Z

<p>moved <a href="/wiki/Planned_preventative_maintenance" class="mw-redirect" title="Planned preventative maintenance">Planned preventative maintenance</a> to <a href="/wiki/Planned_preventative_maintenance_PPM" title="Planned preventative maintenance PPM">Planned preventative maintenance PPM</a></p> <table style="background-color: white; color:black;"> <tr valign='top'> <td colspan='1' style="background-color: white; color:black;">← Older revision</td> <td colspan='1' style="background-color: white; color:black;">Revision as of 12:00, 29 May 2025</td> </tr></table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=237462&oldid=prev 2022-08-24T09:49:10Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 09:49, 24 August 2022</td> </tr><tr><td colspan="2" class="diff-lineno">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Maintenance is an essential to ensure that buildings and other built assets present a good appearance and operate at optimum efficiency. Apart from decay and degradation of the building itself, inadequate maintenance can reduce performance, affect <del class="diffchange diffchange-inline">heath </del>and threaten the safety of occupants and those in the vicinity.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>Maintenance is an essential to ensure that buildings and other built assets present a good appearance and operate at optimum efficiency. Apart from decay and degradation of the building itself, inadequate maintenance can reduce performance, affect <ins class="diffchange diffchange-inline">health </ins>and threaten the safety of occupants and those in the vicinity.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>Maintenance can help:</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>Maintenance can help:</div></td></tr> </table>

JamesBeevers https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=236134&oldid=prev 2022-08-03T10:13:43Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 10:13, 3 August 2022</td> </tr><tr><td colspan="2" class="diff-lineno">Line 48:</td> <td colspan="2" class="diff-lineno">Line 48:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Soft landings.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Soft landings.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_management]] [[Category:Cost_/_business_planning]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Construction_management]] [[Category:Cost_/_business_planning<ins class="diffchange diffchange-inline">]] [[Category:Operations</ins>]]</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=234598&oldid=prev 2022-07-12T12:40:20Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 12:40, 12 July 2022</td> </tr><tr><td colspan="2" class="diff-lineno">Line 26:</td> <td colspan="2" class="diff-lineno">Line 26:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>A calendar can also be used to manage the inventory of spare parts and supplies, enabling the re-ordering as and when necessary to avoid unnecessary delays.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>A calendar can also be used to manage the inventory of spare parts and supplies, enabling the re-ordering as and when necessary to avoid unnecessary delays.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div>NB. NRM3: Order of cost estimating and cost planning for building maintenance works defines preventative maintenance as:</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>NB. NRM3: Order of cost estimating and cost planning for building maintenance works defines preventative maintenance as: <ins class="diffchange diffchange-inline">'...the planned and controlled programme of maintenance and inspection carried out at predetermined intervals (or corresponding to prescribed criteria) and intended to reduce the probability of failure or degradation of the functioning of an item. This includes inspections, adjustments, cleaning, lubrication and/or selective replacement of components (e.g. filters) and minor repairs, as well as performance testing and analysis intended to maximise the reliability, performance and life cycle of building systems, equipment, etc. Preventive maintenance consists of many checkpoint activities on items that, if disabled, may interfere with an essential installation operation, endanger life or property, or involve high costs or long lead times for replacement.'</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">'</del>..<del class="diffchange diffchange-inline">.the planned </del>and <del class="diffchange diffchange-inline">controlled programme of </del>maintenance <del class="diffchange diffchange-inline">and inspection carried out at predetermined intervals </del>(<del class="diffchange diffchange-inline">or corresponding to prescribed criteria</del>) <del class="diffchange diffchange-inline">and intended </del>to <del class="diffchange diffchange-inline">reduce </del>the <del class="diffchange diffchange-inline">probability </del>of failure <del class="diffchange diffchange-inline">or degradation </del>of the <del class="diffchange diffchange-inline">functioning </del>of <del class="diffchange diffchange-inline">an item. This includes </del>inspections, <del class="diffchange diffchange-inline">adjustments</del>, <del class="diffchange diffchange-inline">cleaning, lubrication </del>and<del class="diffchange diffchange-inline">/or selective replacement </del>of <del class="diffchange diffchange-inline">components (e</del>.<del class="diffchange diffchange-inline">g. filters) and minor repairs, as well as performance testing and analysis intended </del>to <del class="diffchange diffchange-inline">maximise the reliability</del>, <del class="diffchange diffchange-inline">performance and life cycle </del>of <del class="diffchange diffchange-inline">building systems, equipment, etc</del>. <del class="diffchange diffchange-inline">Preventive </del>maintenance <del class="diffchange diffchange-inline">consists </del>of <del class="diffchange diffchange-inline">many checkpoint activities on items that, if disabled, may interfere with an essential installation operation, endanger life or property, or involve high costs or long lead times for replacement</del>.<del class="diffchange diffchange-inline">'</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">[https://www</ins>.<ins class="diffchange diffchange-inline">bsria</ins>.<ins class="diffchange diffchange-inline">com/uk/product/JBWkGB/business_focused_maintenance_bg_532016_a15d25e1/ Business-Focused Maintenance (BG 53/2016)], written by Jo Harris </ins>and <ins class="diffchange diffchange-inline">published by BSRIA in May 2016, defines Planned preventative </ins>maintenance (<ins class="diffchange diffchange-inline">PPM</ins>) <ins class="diffchange diffchange-inline">as: ‘…the implementation of a strategy </ins>to <ins class="diffchange diffchange-inline">maximise </ins>the <ins class="diffchange diffchange-inline">operational life of assets and reduce unforeseen instances </ins>of failure<ins class="diffchange diffchange-inline">. PPM should form part </ins>of <ins class="diffchange diffchange-inline">any asset management plan implemented to minimise interruption to core business functions. PPM tasks are based on </ins>the <ins class="diffchange diffchange-inline">use </ins>of <ins class="diffchange diffchange-inline">regular </ins>inspections, <ins class="diffchange diffchange-inline">checks</ins>, <ins class="diffchange diffchange-inline">measurements </ins>and <ins class="diffchange diffchange-inline">fault finding tasks at frequencies that are grounded on experience and based on the expected deterioration </ins>of <ins class="diffchange diffchange-inline">the asset</ins>. <ins class="diffchange diffchange-inline">The purpose of these tasks is </ins>to <ins class="diffchange diffchange-inline">monitor condition</ins>, <ins class="diffchange diffchange-inline">diagnose signs </ins>of <ins class="diffchange diffchange-inline">failure and instigate more intrusive maintenance to prevent complete failure</ins>. <ins class="diffchange diffchange-inline">The outcome of a system of generic </ins>maintenance <ins class="diffchange diffchange-inline">tasks and schedules provides a level </ins>of <ins class="diffchange diffchange-inline">plant reliability which is independent of the service levels required by the business</ins>.<ins class="diffchange diffchange-inline">’</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div>= Related articles on Designing Buildings <del class="diffchange diffchange-inline">Wiki </del>=</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>= Related articles on Designing Buildings =</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Building owner's manual.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Building owner's manual.</div></td></tr> <tr><td colspan="2" class="diff-lineno">Line 36:</td> <td colspan="2" class="diff-lineno">Line 36:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Construction inventory management.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Construction inventory management.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Facilities management.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Facilities management.</div></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">* Hard facilities management.</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;">* How to manage construction plant.</del></div></td><td colspan="2">&#160;</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* In-house or outsource maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* In-house or outsource maintenance.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance.</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=234596&oldid=prev 2022-07-12T12:39:30Z

<p>moved <a href="/wiki/Planned_preventive_maintenance" class="mw-redirect" title="Planned preventive maintenance">Planned preventive maintenance</a> to <a href="/wiki/Planned_preventative_maintenance" class="mw-redirect" title="Planned preventative maintenance">Planned preventative maintenance</a></p> <table style="background-color: white; color:black;"> <tr valign='top'> <td colspan='1' style="background-color: white; color:black;">← Older revision</td> <td colspan='1' style="background-color: white; color:black;">Revision as of 12:39, 12 July 2022</td> </tr></table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=202271&oldid=prev 2021-04-29T08:39:02Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 08:39, 29 April 2021</td> </tr><tr><td colspan="2" class="diff-lineno">Line 42:</td> <td colspan="2" class="diff-lineno">Line 42:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance Repair Operations MRO.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance Repair Operations MRO.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maximising maintenance budgets after lockdown.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maximising maintenance budgets after lockdown.</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Predictive maintenance.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Proactive maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Proactive maintenance.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Resource management.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Resource management.</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=177394&oldid=prev 2020-10-09T09:21:42Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 09:21, 9 October 2020</td> </tr><tr><td colspan="2" class="diff-lineno">Line 49:</td> <td colspan="2" class="diff-lineno">Line 49:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Soft landings.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Soft landings.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div>[[Category:Construction_management]] [[Category:Cost_/_business_planning]]</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">[[Category:DCN_Definition]] [[Category:DCN_Guidance]] </ins>[[Category:Construction_management]] [[Category:Cost_/_business_planning]]</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=167601&oldid=prev 2020-07-16T13:53:59Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 13:53, 16 July 2020</td> </tr><tr><td colspan="2" class="diff-lineno">Line 41:</td> <td colspan="2" class="diff-lineno">Line 41:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance Repair Operations MRO.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance Repair Operations MRO.</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Maximising maintenance budgets after lockdown.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Proactive maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Proactive maintenance.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Resource management.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Resource management.</div></td></tr> </table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=165172&oldid=prev 2020-06-23T16:37:37Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 16:37, 23 June 2020</td> </tr><tr><td colspan="2" class="diff-lineno">Line 40:</td> <td colspan="2" class="diff-lineno">Line 40:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* In-house or outsource maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* In-house or outsource maintenance.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Maintenance.</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Maintenance Repair Operations MRO.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Proactive maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Proactive maintenance.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Resource management.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Resource management.</div></td></tr> </table>

Editor https://www.designingbuildings.co.uk/w/index.php?title=Planned_preventative_maintenance_PPM&diff=158078&oldid=prev 2020-04-03T16:58:18Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 16:58, 3 April 2020</td> </tr><tr><td colspan="2" class="diff-lineno">Line 36:</td> <td colspan="2" class="diff-lineno">Line 36:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Construction inventory management.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Construction inventory management.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Facilities management.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Facilities management.</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Hard facilities management.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* How to manage construction plant.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* How to manage construction plant.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* In-house or outsource maintenance.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* In-house or outsource maintenance.</div></td></tr> </table>

Editor