Maintenance management for energy rationalization in modern … · 2016. 12. 9. · Navaltik...
Transcript of Maintenance management for energy rationalization in modern … · 2016. 12. 9. · Navaltik...
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Maintenance management for energy rationalization in
modern buildings
By:José Paulo Saraiva Cabral,Navaltik Management Lda
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Maintenance definitions
Maintenance, combination of all technical, administrative and managerical actions duringthe life cycle of an item intended to retain it in, or restore it to, a state in which it can performthe required function. (Source: EN 13306)
Required function, function or combination offunctions of an item which are considerednecessary to provide a given service. (Source: EN
13306).
Example required function for a pleasure boat:
“… providing safe and pleasant conditions at sea …”
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Maintenance standards
EN 13306, Maintenance terminology, CEN
April 2001.
EN 13460, Maintenance – Documentation
for maintenance, CEN
EN 15341:2007, Maintenance Key
Performance Indicators
EN 13269:2006, Maintenance – Guidelineon preparation of maintenance contracts
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Maintenance management inbuildings deals with:
Equipments availability and efficiency
Safety
Human confort and IAQ
Energy rationalization
Operating economy
Image… and can induce significant energy economy
through: 1.equipment efficiency; 2.improvementmaintenance and 3. energy management.
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EU Directive 2002/91/CE requirements for maintenance
Maintenance according to good practices
Certified engineer (TRF) & certified personnel (TIM)
Coverage of IAQ and energy management and auditting
Energy consumption monitoring and analysis
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Facts and figures …
Well maintained equipment lasts 30/40% more.
Proactive maintenance reduces energy 5 - 11%.
Costs: about 50 % manpower / 50 % materials.
Reduce downtime / Improve efficiency.
Corrective maintenance costs 2 / 4 times more.
Target: Preventive / Corrective at 80 % or more.
Implementation: Usual 3 to 5 years. Target less.
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Objectives & Targets
Objective = colloquial expression of what we want; e.g. “minimum no.of failures”, “min.
repair times”, “accomplish EEI requirements.”
Target = analytical expression of the objective; e.g. for above:
◦ Indicator operating time T17 = total operating time / no. failures < 2920 hours
◦ Indicator restoration time T21 = total restoration time / no. failures < 2 hours
◦ EEI = Energy consumed / Net area < 45 kgep/m2.year
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Set your Objectives & Targets
Year One
◦ Implement maintenance plan = ability to produce reliable Maintenance Indicators. (Remember that the
difficulty is to gather the information.)
Year Two (based on appraisal of Year One):
◦ T17 = total operating time / no. failures < 2920 hours
◦ T21 = total restoration time / no. failures < 2 hours
◦ EEI = Energy consumed / Net area < 45 kgep/m2.year
Cruising speed:◦ Set some realistic ambitious targets – improvement
maintenance.
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Setting up management
Full speed first class maintenance management can take 3 years …
… but results should be showing after 1 month
Illustrations along use application InnWinWin by:
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Step 1 – organize your plant
Define:
Cost centres and/or clients
Technical intervention area
Establish:
Rules for coding and technical datasheets
Functional organization
Work types
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Step 2 – register maintenanceitems
Start with the most important
Energy & water meters
HVAC equipments
But do not forget:
Safety equipments
Lifts, escalators, etc.
Premises, rooms, shops, etc.
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Register equipment
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Step 3 –Spares and materials
Establish appropriate coding standard
First: register lubricants
Second: “broad sense” spares:
◦ Air filter, bearing, belt, valve, etc… to acquire
sensitivity of the general nature of your materials consumption
Later (cruising speed):
◦ Organize a comprehensive materials standard. To get an accurate picture of your materials consumption and manage effectively your maintenance logistics.
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Step 4 – Set maintenance planfor each item
Start by using standard work schedules
◦ The CMMS may carry some
◦ Obtain from technical literature (e.g. ref. 6)
Later:
◦ Study manuals and adjust to the equipment
◦ Adjust to actual operating conditions
Do not forget: Plan energy and IAQ audits
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Prepare comprehensive work schedules
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Step 5 – Implement WorkOrders (WO) and reporting
Remember:
◦ Every maintenance job needs one WO
◦ There is no management without reporting
◦ Maintenance people do not like to report(Example InnWinWin: WO 000135)
Therefore:
◦ Implement WO and train personnel
◦ Keep it simple but disciplined
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Manage Work Orders
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Step 6 – Implement periodicalreadings
Electricity, gas, water, fuel …
◦ All need to be read at least once a month
◦ Preferably at the end of each month
Other equipments such as:
◦ Chillers, boilers, compressors
◦ Also need to have running records to forecast maintenance dates
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Record energy readings
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Step 7 – Look critically atconsumptions
Energy
Water
Costs
Sound possible interactions:
◦ Consumptions x plant utilization
◦ Costs x maintenance types, etc.
(example InnWinWin:EE Analysis – print consumptions)
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Look at your energy consumption and mix
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… and your costs pattern …
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Watch the evolution of your EEi
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Conclusion
Step by step energy rationalization:
Proactive maintenance – economize 10 % kW
Improvement maintenance on equipments –economize + 10 % kW (?)
Manage energy mix – economize 10 % kW and/or € (?)
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Target energy economy
0%
20%
40%
60%
80%
100%
120%
Today Proact.Maint Improve.Maint Energy mgt
% Required EEI
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Bibliography1. CABRAL, José Paulo Saraiva – Organização e Gestão da Manutenção, dos
conceitos à prática ..., 6ª Edição, Lidel – Edições Técnicas, Julho 2008.
2. CABRAL, José Paulo Saraiva – Gestão da Manutenção de Equipamentos,
Instalações e Edifícios, Lidel – Edições Técnicas, Abril 2009
3. EN 13306, Maintenance terminology, CEN April 2001.
4. EN 13460, Maintenance – Documentation for maintenance, CEN
5. EN 15341:2007, Maintenance – Maintenance Key Performance
Indicators, CEN (BS 26Apr2007)
6. UNE 100004 IN, Mantenimiento preventivo de instalaciones térmicas,
AENOR Associación Española de Normalización y Certificación, 2006.
7. WIREMAN, Terry –, Industrial Press, Inc, New York 2005. Developing
Performance Indicators for Managing Maintenance
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END OF PRESENTATION
Thank you for your attention!
You may obtain this slide show from:
www.manwinwin.com