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Preparation of Audit
Dipl.-Ing. Thomas FrankEnvidatec GmbH
● Energy Profile, Energy Baseline, EnPI
● Guidelines for Auditing
2 – 12
13 – 22
AGENDA
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Energy Management System ISO 50001
Special Requirements:
Energy ProfileEnergy Baseline
Energy Performance Indicators (EnPIs)
Special Requirements of ISO 50001
Energy Profile (1)
The purpose of developing an energy profile of the organization is to understand the areas of significant energy consumption
I.e. the buildings, equipment and processes which account for the greatest energy use or which offer the most potential for energy savings
The identification of the energy profile is critical in understanding where energy is used within the organization and forms the basis for prioritizing the efforts to reduce energy consumption.
The organization that intends to implement an energy management system should start by establishing its current position.
Special Requirements of ISO 50001
Energy Profile (2)
a) Analyze energy use based on measurement and other data
1. How much energy the organization consumes and its trends, changes, anomalies, etc.
2. Estimate how much energy will be consumed in the coming period, typically the next financial budget period.
3. Examine where energy is currently being sourced which will typically be a local utility company and examine other potential sources including e.g. internal waste heat.
b) Based on energy use analyses, identify the areas of significant energy use
1. Where the energy is being used, i.e. what are the significant consumers?
2. What is driving the energy use? This is often difficult to determine but is very important.
3. Which people have significant impact on energy use and identifies their relevant training needs.
Special Requirements of ISO 50001
Energy Profile (3)
c) Identify and prioritize opportunities for improving energy performance, including use of renewable or alternative energy sources, where applicable.
1. Identify energy reduction opportunities by a variety of means, e.g. analysis of the data from (a) and (b), energy audits and studies, examination of EnPIs, etc.
2. Prioritize the known opportunities based on the organizations normal work and investment prioritization criteria.
3. It may be relevant to examine the technical and financial costs and benefits of renewable or alternative energy sources such as biomass, solar, wind, co-generation, etc.
The organisation's energy use will change on an ongoing basis due to plant changes such as new buildings or equipment, energy performance changes, changes of personnel, etc. Organizations will typically update the energy profile on a regular basis, e.g. annually or when a significant change occurs.
Special Requirements of ISO 50001
Energy Baseline
The energy baseline shall be established using the information in the initial energy profile considering a minimum of 12 months of data (cause of seasonal variations)
Significant organizational changes that affect the validity of the EnPIs may be reasons to adjust the baseline. These may include changes in:
● product mix● production levels● operating schedule● facility infrastructure● equipment and systems● new energy resources● legal or regulatory requirements
The EnPIs and baseline should be generated using an as long period of relevant data as possible
Special Requirements of ISO 50001
Energy Performance Indicators (EnPI)
EnPIs are a quantitative index of energy performance as defined by the organization. The concept of an EnPI can be used to compare organizational performance at different points in time.
● The organization shall identify EnPIs to be used to determine energy performance and to subsequently evaluate progress towards objectives and targets.
● The method(s) used for definition and update of the EnPIs shall be recorded.● EnPIs shall be reviewed and compared to the energy baseline on a regular basis.
Methods for defining EnPI will vary depending on the organization’s operations and complexity. EnPI should be easy to understand which will aid its usefulness for sharing information and improving motivation to make improvements.
Special Requirements of ISO 50001
Energy Performance Indicators (EnPI)
Examples and Notes:
● Comparison of annual energy use with targeted use.● Energy consumption divided by production● Comparison of normalized energy consumption with production amount, actual seasonal
temperature, number of customers, length of service time, and so on (Benchmarking). Methods for normalization may vary such as linear compensation, or a theoretical calculation.
● When the organization chooses EnPIs whose variables are not being measured, a measurement plan should be developed and implemented.
● EnPIs can be made relevant for different functions and levels in the organization. E.g. for top management, EnPIs are typically translated to relate cost impacts and to support strategic goals.
● Trends in the EnPI should demonstrate continual improvement of the energy performance of the organization.
Usage of EnPI
● Evaluation of efficiency of measurements
● Reference point for weaknesses, e.g. significant changes in consumption
● Verification of success of taken measurements
● Verification of success of investments
● Comparison with different companies of the same branch
Special Requirements of ISO 50001
EnPI
Necessary input parameters
● Output variables are the amount of energy used - if necessary structured by energy source for each process
● Reference values such as units produced or specific variables such as m² are useful to determine the company's energy efficiency
● Identification of further influencing factors e.g. outdoor temperature, humidity, altitude ...
Special Requirements of ISO 50001
EnPI
Improper input variables
● Energy costs counterproductive for efficiency evaluation
● Absolute energy consumption usually not suitable as it depends on too many factors (see necessary input parameters)
● calculated (estimated) energy consumption, as most unequal to real consumption
Special Requirements of ISO 50001
FacilityProcess
Electricity
Heating
Raw materials
Semi-finished products
Fuels
Additives
Dissipated energies
Emissions
Products
By-products*
Waste materials
*technological related production
EnPI
Special Requirements of ISO 50001
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Energy Management System ISO 50001
Guidelines for Auditing
Audits are used for the verification if systems, processes and products comply with the requirements of the standard
According to that, an audit is a management tool to meet the concerted targets
An audit is a weak-point analysis
assesses the current state
questions processes and operating cycles
offers the opportunity to determine improvement measures
can create confidence
Guidelines for Auditing EnMS - Definition
Initiate an audit
Name a leader of the audit team
Define the audit targets, the audit scope and the audit criteria
Detect he audit's feasibility
Select the audit team; naming the members
Vote with the OE that shall be audited; scheduling the inductory conference
Guidelines for Auditing EnMS – Audit Tasks
Audit tasks on location Inductory conference with the manager of the area that shall be audited
Conduction of the inductory conference
Evaluation of scope, audit scheme and schedule
Communication control during the audit No monologue!
Roles and responsibilities; motivation to take part
Collection and assessment of information
Comparison of the standard's requirements with the content of the OE's documents
Making audit statements considering the available capital
Drawing audit conclusions
Conduction of the concluding discussion
Guidelines for Auditing EnMS – Audit Tasks
Audit tasks on location / site inspection
Preparations
Define energy and environmental relevant areas
Write a list of sites that shall be inspected
Focus on key aspects (major energy users, measuring points, documents, structural alterations, expansions, …)
Draw boundaries (OE, production line, processes, …)
Mark site plans
Guidelines for Auditing EnMS – Audit Tasks
Audit tasks on location / site inspection
Execution Inspect all relevant areas
Control energy users with high energy demand
Test measuring systems (plausibility check)
Watch energy consumption considering the work flow
Detect waste of energy
Examine alternative energy supply
Documentation (with pictures where necessary)
Guidelines for Auditing EnMS – Audit Tasks
Audit tasks on location / site inspection
Analysis
Add notes to pictures
Evaluation of processes
Description of internal and external interfaces
Prove consumptions with key figures
Analyze energy reports
Analyze major consumers
Guidelines for Auditing EnMS – Audit Tasks
Following points must be analyzed, considered and determined when evaluating and post-processing:
Nonconformities (classify where necessary)
Recommendations (classify where necessary)
Audit report (records)
Action planning
Suggestions for the implementation
− Responsibilities
− Deadlines
− Resources
− who, what, when, how …
Guidelines for Auditing EnMS – Post-Processing
Requirements for the audit report
The essential contents are:
− Aim of the audit
− Scope of the audit (organizational and functional units; processes; period of time)
− Audit initiator
− Lead auditor and members of the audit team
− Deadlines and implementation sites
− Audit criteria
− Audit findings
− Audit conclusions
Guidelines for Auditing EnMS – Post-Processing
Requirements for the audit report
Additionally, the following points may be included:− Audit scheme
− List of the representatives of the audited organization
− Summary of the auditing process (unsecurities, constraints, problems, ...)
− confirmation, that the audit targets within the scope where achieved in compliance with the audit scheme
− Not covered areas, although they are within the scope
− Unsolved disagreements between the involved parties
− Recommendations for improvements
− Concerted plans for follo-up actions (aims)
− Confidentiality agreement
Guidelines for Auditing EnMS – Post-Processing
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Questions?
Suggestions?
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Thank you for your attention
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Phone.: +49 (0) 40 / 300 857 – 0
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