cold weather preparations and best practices · pdf filecold weather preparations and best...

Topic

Preventing

Freeze-Related

Unavailability &

Safety HazardsPresenter

Bob Burchfield

Plant Manager, MMPA

Facilities in Minnesota

Division 6

Rusty Whitely & Jeff Kremer

1

COLD WEATHER PREPARATIONS AND BEST PRACTICES

Faribault Energy Park, Faribault Minnesota

265 MW (GE Frame 7F GT/ CMI HRSG / GE A10 STG)

Projects – Past and Present

o MINNESOTA / FEP & MRS / PM / 2007 – Present / 7F CC & Siemens SC

o OKLAHOMA / Redbud Energy OM / 2002-2007 / 1200 MW 7F CC

o TEXAS / Guadalupe Power Partners / Ops / 2000-2002 / 1000 MW 7F CC

o NEW YORK / Independence Station / I&E / 1992-2000 / 1000 MW 7F CC

o NEW YORK / Nine Mile Point / Training / 1990-1992

o VIRGINIA / NN SHIPBLDG / 1988 - 1990

o MICHIGAN / DC Cook / Maint / I&C / 1987

o SUBMARINER 1980-1986

2


Challenges:

• Warm Locations

• Out of Sight Out of Mind

• Taken by Surprise

• Cold Locations

• Same Challenges!

3


4


Challenges:

Everybody Wants to Enjoy Summer and Forget

About Last Winter!

Common Challenges

• Southern and Northern Plants:

• Addressing Issues Soon Enough

• Insufficient Detail in Procedures

• Insufficient Accountability

• Lacking a Triggering Mechanism / Reminder Tool

5


6


Winter!

50 days below zero

Building a Robust Defense:

Multi-Phased Approach

• Checklist - Pre-Season

• Checklist - Pre-Storm

• Checklist - Daily - Valve Stroke / Pump Start / Instrument

• PM Tasks in CMMS Database

• Converting Temporary Solutions to Permanent Solutions

• Changing Conditions (Plant and Weather)

7


Planning:

• Use CMMS PM as a triggering tool

• “Pre-Season” Checklist/Procedure

• Content Example:

• “Begin use of daily 32 degree action log”

• “Order Salt and Sand, Stage shovels”

• “Test Snow Blower, Torpedo Heaters

• “Buy #2 Fuel or Propane” for heaters

• “Set up Plowing Contractor”

8


Planning:

• Daily “32 Degree Action Log”

• Daily checks for CRO and Outside Operators

• Avoid Ambiguity

Poor:

“Start Circ water Pump’

Better:

“Start Circ Water Pump

“Verify Flow on XMTR xxx-xx-xx”

“Verify Pressure on XMTR xxx-xx-xx”

9


10


CRO

System<32º F

#/shiftAction

Operable

Y/N

Date/Time

CompletedInitial

Demin 1

Start/Cycle STG Demin Water Pump 513PP-103A and

513PP-1003B and CTG Demin Water Pumps 1001 and

1002

Demin 1Stroke Hotwell Level Control Valve 513LCV-042A + B and

ensure that Hotwell Level 452LIT-042B increases

BFP 1Run Boiler Feed Pump 480PP-1001A + B (alternate pumps

each start)

BFP 1

Verify Min Flow Recirc Transmitter responds to changes in

Min Flow Recirc valve positions 480FIT-162 and 172

respectively

Off-Line 32 Degree Action Log

Best Practice:

• “Winter Storm” Checklist

• Formal procedure - Initiated by a designated

“Weather Watcher”

• Procedure Example Next Slide

• “Make It Formal Professional”

11


12


OPERATIONS MANUAL

FARIBAULT ENERGY PARK - FARIBAULT, MN VOLUME II – OPERATING PROCEDURES

Number:

OP-109

Subject:

Winter Storm Checklist

Approved for use by:

Current Issue:

R0

Issue Date:

09 Mar 11

Page 1 of 1 Prepared by NAES Corporation

TABLE OF CONTENTS

SECTION TITLE PAGE

1. Introduction .............................................................................................................. 2

2. Operating Precautions and Limitations ..................................................................... 2

3. Snow Storm Checklist .............................................................................................. 2 A. 72 Hours Prior to: ............................................................................................ 2 B. 48 Hours Prior to: ............................................................................................ 2 C. 24 Hours Prior to: ............................................................................................ 3 D. During & Immediately After Snow Storm ......................................................... 3 E. After Snow Storm ............................................................................................ 4

Best Practices

Use CMMS program to trigger Tasks:

Winter Lay-up:

Evaporative Cooler

Chiller Systems

Lawn Sprinklers

Prepare:

Energize and Test Heat Trace Circuits

Roll down Cooling Tower Tarps

13


• LEDs to

Monitor

Heat Trace

• Annual Amp

Draw

Survey

14


• XMTR Obrien Box / Temps Routed To DCS

• With “HART” Comms - No additional wiring needed

15


• Valve

Blankets

16


• Permanent

Solutions Like

the Enclosure

on the Right

17


• Perform Walk-

Arounds

• Temporary Solutions

• Write Work Orders

18


• Perform Walk-

Arounds

• Assess & Correct

Safety Hazards

19


Roof Snow Guard

Fencing

Summary:

• Procedure & Checklist - Pre-Season

• Procedure & Checklist - Daily Valve Stroking / Pump Start /

Instrument Response Verifications

• Procedure & Checklist - Winter Storm

• Enter PM Tasks in CMMS Database

• Convert Temporary Solutions to Permanent Solutions

• Conduct Surveys for Personnel Safety and Equipment Hazards

NAES Can Help. For Additional Information or Technical Support

Contact NAES Technical Services for Professionally Developed Documents and

Support Tailored to Meet Your Specific Needs.

[email protected] or call 425 - 270- 6448

20


mailto:[email protected]