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Important The Systems, Drawings And Pictures Depicted In This Presentation Are Used For Discussion Purposes Only. PV Systems And Their Components Vary.

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Presentation on theme: "Important The Systems, Drawings And Pictures Depicted In This Presentation Are Used For Discussion Purposes Only. PV Systems And Their Components Vary."— Presentation transcript:

1 Important The Systems, Drawings And Pictures Depicted In This Presentation Are Used For Discussion Purposes Only. PV Systems And Their Components Vary In Design, And Appearance. It Is Imperative That Your Department Become Familiar With The Systems Installed In Your Community. ! 1

2 Coordination Between Your Fire Department And Your Municipalities' Building And Fire Code Officials Is Essential To Understanding &Identifying PV Systems Installed In Your Community! ! 2

3 Impact on the Fire Service
Solar Power & Its Impact on the Fire Service

4 Program Goals: To Provide Firefighters with an Awareness of Photovoltaic Systems so Informed Fire Ground Decisions can be Applied for Safe Fireground Operations

5 Program Topics: What is Solar Power? Why are People Using it?
What is it Used For? Types of Systems Impact on The Fire Service Target Hazards in Your Jurisdiction

6 Currently… New Jersey Is Second Largest Solar Energy Market In The United States Note: California with 4 times the population is ranked #1

7 NJ Installations = 6 = 12+ = 4000+ =>9000

8 Why Does it Concern Us 2011 - Over 9,000…
Equates to About 15 Per Municipality

9 They’re in Your Town!!!! Why Does it Concern Us

10 They’re in Your Town!!!! Why Does it Concern Us

11 Renewable Energy Sources
WHY State Purchase Incentives (up to 25% of cost) State Sales Tax Exemption Federal Tax Credits Lower or Non-Existent Energy Bills Note: Utilities Required To Buy Back Excess Solar Energy

12 Importance to New Jersey
In 2006 4,709,000 Megawatt Hours Used In One Month Only 36 Megawatt Hours Were Generated By Solar Energy

13 Importance to New Jersey
New Jersey also Houses the Nation’s Highest-Capacity & Oldest Running Nuclear Power Plants (Salem & Oyster Creek)

14 Solar Energy Light & Radiant Heat From the Sun that Influences Climate & Weather Naturally Replenished - Renewable Energy Source Also Referred to as Solar Power Or Photovoltaic (PV) Solar: Electricity Generated From Solar Radiation

15 Types of Solar PV Systems
Grid Interconnected Power from the Solar System is Added to the Normal Home Power Supply Supplied by the Utility Company

16 Types of Solar PV Systems
System Components

17 Types of Solar PV Systems
System Components Roof Mounted Photovoltaic (PV) Panels DC Energy ►AC Energy Inverter Solar Junction Box Electric Meter

18 Grid Inter-Tied with Battery Backup
System - Similar to Previous System with the Addition of a “Battery Bank” to Store Power Generated from Solar Panels Types of Solar PV Systems

19 Grid Inter-Tied with Battery Backup
Types of Solar PV Systems

20 Off Grid Systems Not Tied to Any Utility Service or Power Lines
Main Source of Power for Building Can Have Wind-Power, Water-Power & Back-Up Generators Factored in to Provide Energy at Night Types of Solar PV Systems

21 Off Grid System Components
Roof Mounted Solar Panels Array DC Disconnect Charge Controller: Prevents Overcharging Types of Solar PV Systems

22 Off Grid System Components
Battery Bank System Meter: Bank Level, Panel Production, House Usage Main DC Disconnect Types of Solar PV Systems

23 Off Grid System Components
DC Energy ►AC Energy Inverter Rectifier- Changes AC Energy ► DC Energy To Be Stored In Battery Bank Solar Junction Box Types of Solar PV Systems

24 Off Grid System Components
Generator Junction Box Power Meter Types of Solar PV Systems

25 How Solar PV Systems Work
Panels Contain PV Cells Made of Semi- conductive Materials Such as Silicon The Cells Form Layers/ “Wafers” & Contain a Positive Side & Negative Side

26 How Solar PV Systems Work
Photovoltaic Panels Photo Means Light Voltaic Means Electricity Also Commonly Referred to as PV Panels

27 How Solar PV Systems Work
Electric Conductors Attached to Panel Sides Form Electric Circuit Sunlight Energy Excites Electrons & Knock Them Loose Conductors Capture Energy Creating an Electrical Current

28 How Solar PV Systems Works
Direct Current Electrical Energy is Produced Power Is Combined in a “Combiner Box” Or “Combination Box” & Sent to Inverter

29 How Solar PV Systems Works
Inverter: Changes DC to AC Information such as Power Level, Energy Production, & Fault Messages can Usually be Observed Here

30 How Solar PV Systems Works
Combiner Box How Solar PV Systems Works How Solar PV Systems Works

31 Combiner Box Conduit to Inverter Note: Always Consider This HOT
How Solar PV Systems Works

32 Alternating Current (AC) is Distributed to House Service Panel for Use
Alternating Current (AC) is Distributed to House Service Panel for Use. Excess Power is Transported Back Through the Utility Meter How Solar PV Systems Works

33 Solar Panel Mounting Systems
Mounting Bolts

34 Solar Panel Mounting Systems
Grid Tracks

35 Flat Roof Mounting Systems
Weighted or Ballasted System

36 Flat Roof Mounting Systems
Bolted Through or Anchored System

37 Integrated Roof Systems
Virtually impossible to tell from the ground. This is why preplanning is so important.

38 Preplanning is Essential
Some Systems Unidentifiable from Street

39 Preplanning is Essential
Systems Differ

40 Preplanning is Essential
Disconnect Locations Vary

41 PV Hazards Shock Hazards Batteries Roof Collapse Trip hazards
Roof Ventilation

42 Shock Primary Firefighter Danger
Maximum Voltage Of A Solar Panel System: 600 Volts (Low Voltage) Note: Nearly 300 workers die yearly from low voltage electrical incidents PV Hazards

43 Shock Momentary Contact With Low DC Voltages May Produce:
Continuous Shock Thermal Injury Ventricular Fibrillation Note: Unlike fire, which produces burns in a relatively predictable manner, electricity can strike unsuspecting victims — sometimes fatally! PV Hazards

44 Inhalation Protect Yourselves – Use Your SCBA PV Hazards

45 Batteries As a Rule, Batteries Burn with Great Difficulty
Batteries Exposed to Fire Generate Extremely Corrosive Fumes & Gases Note: NEVER USE WATER to Extinguish lead-acid battery fires - Use CO2 or Dry Chemical PV Hazards

46 Roof Collapse Approx. Weights 35# Each PV Panel – 35 lbs
Normal Dwelling - 40 Panels 35# Each PV Panel – 35 lbs Modules & Racking Hardware – 4 lbs/ft2 1,400 Pounds Total Added Dead Load to Roof System PV Hazards

47 Other Hazards Trip Hazards PV Hazards

48 Electrical Hazards PV “Wiring Harness” is CONSIDERED ALWAYS HOT
PV Hazards

49 Roof Operations Hazards
During Daytime Firefighting Operations PV Panels Are Still Generating Electricity Do Not Cut Into Or Walk Across Panels Do Not Break Protective Glass All Energy In Entire System Could Be Released At Break Point PV Hazards

50 Roof Ventilation Ventilate The Highest Point Over The Fire Without Cutting Through The PV Array (other side of the roof) Flat Roofs With Complete PV Coverage Horizontal With Supplemental Hydraulic & Positive Pressure Ventilation PV Hazards

51 Firefighting Operations
The IC Must Notify Firefighters of the Presence of Solar Arrays

52 Firefighting Operations
Lock & Tag Out Array at Inverter DC Disconnect Main Electrical Panel

53 Firefighting Operations
PV Array Fire Use Class “C” Extinguishing Agents- CO2 Or Dry Chemical CAUTION: SYSTEM IS ENERGIZED

54 Firefighting Operations
Roof Fire Use Water Fog Pattern on the PV Array CAUTION: SYSTEM IS ENERGIZED

55 as Energized Regardless of Time
Remember ! Treat All Systems as Energized Regardless of Time of Day

56 Remember ! You Cannot Effectively Block All The Sunlight With Salvage Covers, Foam, or Tarps During Day Time Operations and Declare The PV System “Safe”

57 Remember ! Use of spotlights during an evening operation may be bright enough to generate electricity from the PV system

58 PV Technology Advancements
PV Integrated Shingles 58

59 Summary www.nfpa.org/assets/files/PDF/Research/FFTacticsSolarPower.pdf
Know Where Buildings With PV Systems Are Located In You District. “Preplan” “Preplan” “Preplan” Treat PV System Components As Always Energized Adjust Your Firefighting Tactics Accordingly Additional Information: 59

60 Remember The Systems, Drawings and Pictures depicted in this Presentation are used for discussion purposes only. PV Systems and their Components vary in design, and appearance. It is imperative that Your Department become familiar with the systems installed in your community. ! 60

61 Coordination between your Fire Department and your municipalities' Building and Fire Code Officials is Essential to identifying and understanding the PV Systems installed in your Community! ! 61

62 Acknowledgements Corey J. Hullings …………………… Delran Fire Department
Suzanne Borek…………………Division of Codes and Standards Richard Farletta ………………..Division of Fire Safety Ken Kandrac ……………………Slackwood Fire Company Jerry Lax ………………………..Advanced Solar Products NJ Board of Public Utilities……Clean Energy Program James McFadden………………Division of Fire Safety

63 Stay Safe


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