Achieving Compliance with ANSI/ASHRAE Standard 188 1 ©2018 Phigenics LLC

Achieving Compliance with ANSI/ASHRAE Standard 188 2

•  Creating a Facility-Based Water Management Program

o  Updates to Standards

•  Verifying and Validating Program Performance

•  Responding to Validation Test Results o  Example: Potable Water Control Point

o  Example: Utility Water Control Point •  Question and Answers

Agenda

Achieving Compliance with ANSI/ASHRAE Standard 188 3

Jay Reading •  Phigenics Vice President and Co-Founder

•  30 years of water treatment experience in HVAC, process cooling and steam generation

•  15 years of experience developing and implementing comprehensive and defensible water management programs that

o  Prevent disease and injury from Legionella and other hazards

o  Improve water and energy efficiency

o  Optimize the total cost of managing water systems.

•  BS in Chemical Engineering from the University of Washington

Achieving Compliance with ANSI/ASHRAE Standard 188 4

Creating a Facility-Based Water Management Program

Achieving Compliance with ANSI/ASHRAE Standard 188 5

•  No substantial changes

•  Language was updated to be

more “code-ready”

•  All definitions and concepts

are the same

•  Sec. 6 & Figure 1 have not

been changed

•  Next publication in 3 years

Achieving Compliance with ANSI/ASHRAE Standard 188 6

Achieving Compliance with ANSI/ASHRAE Standard 188 7

Process

Achieving Compliance with ANSI/ASHRAE Standard 188 8

Verifying and Validating Program Performance

Achieving Compliance with ANSI/ASHRAE Standard 188 9

Validation and Verification

As defined in ASHRAE Standard 188: Validation: initial and ongoing confirmation that the Program, when implemented as designed, effectively controls the hazardous conditions throughout the building water systems. Verification: initial and ongoing confirmation that the Program is being implemented as designed.

Achieving Compliance with ANSI/ASHRAE Standard 188 10

Validation

Validation is a Quality Control (QC) function. Validation is confirmation that the Water Management Program is effective when implemented as designed.

Achieving Compliance with ANSI/ASHRAE Standard 188 11

Validation Response

Validation response is the action taken when test results show that the program (when implemented as designed) is: ●  NOT effectively controlling the hazard or hazardous conditions throughout the

building water system ●  NOT effectively generating the efficiency gains throughout the building water

system

Achieving Compliance with ANSI/ASHRAE Standard 188 12

Verification

Verification is a Quality Assurance (QA) function. Verification is confirmation that the Water Management Program has been implemented as designed.

Achieving Compliance with ANSI/ASHRAE Standard 188 13

Example: 0.5 – 1.0 ppm free residual oxidant applied continuously is a control limit used to control microbial hazards in a potable water system

Control Limit

A control limit is the range of the applied control measure. It must be:

•  Quantitative •  Measurable •  Physical or chemical parameter

Achieving Compliance with ANSI/ASHRAE Standard 188 14

Corrective Action

•  Predetermined procedure to be followed if there is a deviation from the critical control limit

•  Every CCP (control location) must have a specified critical control limit and a

monitoring plan for the critical control limit

•  Every critical control limit must have a predetermined corrective action specified

Achieving Compliance with ANSI/ASHRAE Standard 188 15

Example: Positive Legionella Results in Ice Machine

Achieving Compliance with ANSI/ASHRAE Standard 188 16

●  Don’t panic and unintentionally make it worse and purchase unnecessary “solutions”

●  Bring the team together ●  Utilize the validation

response system guide

Don’t Panic and Bring the WMP Team Together

Achieving Compliance with ANSI/ASHRAE Standard 188 17

Example: Positive Legionella Results in an Ice Machine

Processing Step

Safety Hazard or Efficiency Opportunity

Control Point (Control Location)

Control Limits Monitoring Frequency Corrective Action Verification Procedure

Cold Water Distribution

Safety Ice Machines

Maintain a FRO residual of 0.5ppm in cold water

Perform free chlorine test with colorimeter instrument

Weekly, during planned flushing program

Flush fixture or multiple fixtures to achieve desired oxidant levels

Review by Independent Water Company

Achieving Compliance with ANSI/ASHRAE Standard 188 18

Example: Positive Legionella Results in Ice Machine

Achieving Compliance with ANSI/ASHRAE Standard 188 19

Example: Positive Legionella Results in Ice Machine

Achieving Compliance with ANSI/ASHRAE Standard 188 20

Example: Positive Legionella Results in a Cooling Tower

Achieving Compliance with ANSI/ASHRAE Standard 188 21

●  Don’t panic and unintentionally make it worse and purchase unnecessary “solutions”

●  Bring the team together ●  Utilize the validation

response system guide

Bring the WMP Together and Avoid Panic

Achieving Compliance with ANSI/ASHRAE Standard 188 22

Example: Positive Legionella Results in Cooling Tower

Processing Step

Safety Hazard or Efficiency Opportunity

Control Point (Control Location)

Control Limits Monitoring Frequency Corrective Action Verification Procedure

Heating & Cooling

Safety Cooling Towers

Maintain TRO 1.0 to 2.0ppm (as chlorine) to all open recirculating systems (cooling towers)

1. EPA approved method for testing TRO 2. Automated or manual TRO Measurement

1. Daily 2. Continuous 3. After oxidant slug feed

1. Troubleshoot chemical feed equipment 2. Adjust dosage

Facility Manager and Independent Water Management Company to verify quarterly

Achieving Compliance with ANSI/ASHRAE Standard 188 23

Example: Positive Legionella Results in a Cooling Tower

Achieving Compliance with ANSI/ASHRAE Standard 188 24

Example: Positive Legionella Results in a Cooling Tower

Achieving Compliance with ANSI/ASHRAE Standard 188 25

Supplemental Disinfection Options

Achieving Compliance with ANSI/ASHRAE Standard 188 26

Biofilm Penetration Slide

Achieving Compliance with ANSI/ASHRAE Standard 188 27

Planktonic Bacteria Slide

Achieving Compliance with ANSI/ASHRAE Standard 188 28

Summary Chart

Achieving Compliance with ANSI/ASHRAE Standard 188 29