Energy Conservation Example

1
Energy Conservation Example
Fall 2005 AORC SHEC Meeting Jeff Mieth

• September 13, 2005

2
Overview

• Approach
• Example from TRW/Mesa Operations
• Questions and Answers

3
Approach

• Plan
• Objectives and strategy
• Baselines and profiles of existing utility
  consumption and costs
• Audits and estimates of utility cost reduction
  opportunities
• Measures and resources to implement the strategy
• Metrics to measure achievement of objectives

From May 2005 Plant Services article A Plant on
an Energy Diet www.PLANTSERVICES.com
4
TRW/Mesa Ops Example

• Objectives and Strategy (2004)
• ISO 14001 Objective to reduce electricity
  consumption and costs in order to meet Mesa Ops
  2004 OP goal for electricity costs.
• ID projects based on power monitors installed in
  2003
• Assign champions and complete projects from above
• Implement system for managing energy consumption

5
TRW/Mesa Ops Example

• Objectives and Strategy (2005)
• ISO 14001 Objective to reduce electricity
  consumption and costs at the Mesa II Facility.
• Reduce electricity costs at Mesa II by
  implementing projects identified by the Energy
  Management Team during the CDR workshop.
• Achieve eQOS goal for reducing electricity
  consumption by 14 compared with the 2004
  baseline level of 37 million kilowatt-hours.

6
TRW/Mesa Ops Example

• Baselines and Profiles
• 20 compressed air
• 10 15 HVAC
• Utility provides consumption data in 15-min
  intervals via internet
• Supplemented with submetering (70 Total)

7
TRW/Mesa Ops Example

• Audits
• Monthly Energy Audits late 2003 through 2004
• Combined with monthly HSE audits in 2005
• Estimates of Cost Reduction Opportunities
• Six Sigma Black Belt Projects
• HSE Cost Determination and Reduction

8
TRW/Mesa Ops Example

• Measures and Resources to Implement the Strategy
• Chiller Check software
• Centralized HVAC controls
• Improvements to generation of compressed air
• Operation of compressors, line pressure, leaks
• Focusing on usage of compressed air
• Line-specific compressed air valves
• Process-specific shutdown procedures
• Future opportunities
• Time-of-Use, process exhaust (HVAC), natural gas

9
TRW/Mesa Ops Example

• Metrics to measure achievement of objectives

10
Energy Conservation Example

• Questions?