OBC INDUSTRIALMAJOR OCCUPANCYMAJOR OCCUPANCY
CLASSIFICATION
OBOA ANNUAL MEETING AND TRAINING SESSIONS
LONDON ONOCTOBER 4 2011
Randal Brown & Associates Ltd. © 2011
OCTOBER 4, 2011
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PRESENTERSPRESENTERS
• RANDAL BROWN• RANDAL BROWN– P.ENG., PE, BDS, FSPFE
PRESIDENT– PRESIDENT
• MARK HARROP• MARK HARROP– P.ENG., BDS, CFPS
MANAGER INDUSTRIAL DIVISION– MANAGER, INDUSTRIAL DIVISION
• RANDAL BROWN & ASSOCIATES LTDRandal Brown & Associates Ltd. © 2011
• RANDAL BROWN & ASSOCIATES LTD.
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PRINCIPAL TOPICSPRINCIPAL TOPICS
• INDUSTRIAL MAJOR OCCUPANCIES• INDUSTRIAL MAJOR OCCUPANCIES– DIFFERENTIATING
10% CONCEPT– 10% CONCEPT– PAINT SPRAY BOOTH EXAMPLE
• OBC / OFC MANDATED PROTECTION– HOW TO GET FROM OBC TO OFC– WHAT TO LOOK FOR AND ASK FOR
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SPRAY BOOTH PHOTOSPRAY BOOTH PHOTO
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SPRAY BOOTH PHOTOSPRAY BOOTH PHOTO
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MAJOR OCCUPANCY DEFNMAJOR OCCUPANCY DEFN
• DEFINED IN OBC• DEFINED IN OBC– MAJOR OCCUPANCY:
• MEANS THE PRINCIPAL OCCUPANCY• MEANS THE PRINCIPAL OCCUPANCY FOR WHICH A BUILDING OR PART OF A BUILDING IS USED OR INTENDED TO BE USED, AND IS DEEMED TO INCLUDE SUBSIDIARY OCCUPANCIES THAT ARE AN INTEGRAL PART OF THE PRINCIPAL OCCUPANCY.
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MAJOR OCCUPANCY DEFNMAJOR OCCUPANCY DEFN
• KEY POINTS:• KEY POINTS:– PRINCIPAL USE
– BUILDING OR PART OF BUILDING• CAN HAVE SEVERAL MAJORCAN HAVE SEVERAL MAJOR
OCCUPANCIES IN A BUILDING
– INCLUDES SUBSIDIARY USES
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EXAMPLES OF MAJOR OCCUPANCIES
• APPENDIX NOTE A 3 1 2 1 (1)• APPENDIX NOTE A-3.1.2.1.(1)• PART 11 TABLES
• OTHER CODES– IBC– NFPA 101 & 5000
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EXAMPLES OF MAJOR OCCYSEXAMPLES OF MAJOR OCCYS
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EXAMPLES OF MAJOR OCCYPART 11
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EXAMPLES OF MAJOR OCCYPART 11
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HOW TO DETERMINE MAJOR OCC’Y CLASSIFICATION
• BUILDING OFFICIAL TO ASK• BUILDING OFFICIAL TO ASK – OWNER / DESIGNER
ASK TO SEE EQUIPMENT LAYOUTS– ASK TO SEE EQUIPMENT LAYOUTS
• BUILDING OFFICIAL TO ASK: – WHAT IS ACTUALLY BEING DONE IN
THE BUILDING?– WHAT IS THE MAIN ACTIVITY?
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HOW TO DETERMINE MAJOR OCC’Y CLASSIFICATION
• WHEN HAVE MULTIPLE USES:• WHEN HAVE MULTIPLE USES:– WOULD ONE OCCUPANCY / USE EXIST
WITHOUT THE OTHER?WITHOUT THE OTHER?
1 WOULD OFFICE BE PRESENT• 1. WOULD OFFICE BE PRESENT WITHOUT THE FACTORY?
• 2. WOULD BOARDROOM BE PRESENT WITHOUT THE OFFICES?
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HOW TO DETERMINE MAJOR OCC’Y CLASSIFICATION
• EXAMPLE OF AUTOMOTIVE SPRAY• EXAMPLE OF AUTOMOTIVE SPRAY BOOTH
SPRAY BOOTH IN A MAACO?– SPRAY BOOTH IN A MAACO?• MAIN PURPOSE: BODYSHOP AND SPRAY
PAINT CARS.• WHAT IS THE MAJOR OCCUPANCY???
– F2 REPAIR GARAGE ??? OR……– F1 SPRAY BOOTH ???
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HOW TO DETERMINE MAJOR OCC’Y CLASSIFICATION
• EXAMPLE OF AUTOMOTIVE SPRAY BOOTH• EXAMPLE OF AUTOMOTIVE SPRAY BOOTH– SPRAY BOOTH IN A AUTOMOBILE DEALERSHIP?
• MAIN PURPOSE: SELL CARS, REPAIR CARS, MAINTENANCE OF CARS.
• PAINTING IS JUST ONE FUNCTION.• DEALERSHIP WOULD STILL BE PRESENT WITHOUT
THE PAINT SPRAY BOOTHTHE PAINT SPRAY BOOTH• SO SPRAY BOOTH IS A SUBSIDIARY USE AND NOT A
MAJOR OCCUPANCY.
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STEP 1 – GENERAL MAJOR OCCUPANCY
• WHAT IS MAIN USE?• WHAT IS MAIN USE?
• USE EXAMPLES IN APPENDIX• USE EXAMPLES IN APPENDIX
• USE EXAMPLES IN PART 11USE EXAMPLES IN PART 11
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STEP 2FUEL LOAD ANALYSIS
• INDUSTRIAL OCCUPANCIES• INDUSTRIAL OCCUPANCIES
– F1 – HIGH HAZARD INDUSTRIALF1 HIGH HAZARD INDUSTRIAL
– F2 – MEDIUM HAZARD INDUSTRIAL
– F3 – LOW HAZARD INDUSTRIAL
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F1 – HIGH HAZARD INDUSTRIAL OCCUPANCY
• SUFFICIENT QUANTITY AND• SUFFICIENT QUANTITY, AND
• SPECIAL FIRE HAZARD• SPECIAL FIRE HAZARD• HIGHLY COMBUSTIBLE AND FLAMMABLE, OR• EXPLOSIVE MATERIALSEXPLOSIVE MATERIALS
• INHERENT CHARACTERISTICS
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F1 – HIGH HAZARD EXAMPLES
• SUFFICIENT QUANTITY AND• SUFFICIENT QUANTITY, AND
• SPECIAL FIRE HAZARD– PYROPHORIC– SELF-COMBUST IN AIR– CHEMICAL REACTIONS
• EXAMPLES IN APPENDIX• CHEMICAL PLANTS
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F2 VS F3F2 VS F3
• F2 MEDIUM HAZARD• F2 – MEDIUM HAZARD – COMBUSTIBLE CONTENT MORE THAN
50 KG/M2 OF FLOOR AREA OR• 50 KG/M2 OF FLOOR AREA, OR• 1200 MJ/M2 OF FLOOR AREA.
• F3 – LOW HAZARD– COMBUSTIBLE CONTENT NOT MORE THAN– COMBUSTIBLE CONTENT NOT MORE THAN
• 50 KG/M2 OF FLOOR AREA, OR• 1200 MJ/M2 OF FLOOR AREA.
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F2 VS F3 (CONT’D)F2 VS F3 (CONT D)
• FUEL LOAD ANALYSIS• FUEL LOAD ANALYSIS
• NEED:– QUANTITY OF MATERIALS IN BUILDING– WEIGHT OF MATERIALS IN BUILDING– HEAT OF COMBUSTION
• SFPE HANDBOOK• NFPA HANDBOOK
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F2 VS F3 (CONT’D)F2 VS F3 (CONT D)
• EITHER CRITERIA WILL TRIGGER• EITHER CRITERIA WILL TRIGGER OCCUPANCY CLASSIFICATION.
• SO NEED TO LOOK AT BOTH• WEIGHT OF COMBUSTIBLE MATERIALS, AND• HEAT OF COMBUSTION OF COMBUSTIBLE
MATERIALS
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F2 VS F3F2 VS F3
• STILL USE APPENDIX AND PART 11• STILL USE APPENDIX AND PART 11 EXAMPLES.
• WON’T DO FUEL LOAD ANALYSIS FOR EVERY INDUSTRIAL OCCUPANCYEVERY INDUSTRIAL OCCUPANCY
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SFPE HANDBOOKSFPE HANDBOOK
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NFPA HANDBOOKNFPA HANDBOOK
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SAMPLE FUEL LOAD CALCULATION
Category of Mass Heat of Combustion Heat Releasedg yCombustible Material (kg) (MJ/kg) (MJ)
Hydraulic Oils 1 400 kg (approx.) 46.0 MJ/kg 64 400 MJ
Cables and Wiring 11 000 kg (approx.) 43.4 MJ/kg 477 400 MJ
FRP Floor Grating 6 000 kg (approx ) 40 52 MJ/kg 243 120 MJFRP Floor Grating 6 000 kg (approx.) 40.52 MJ/kg 243 120 MJ
FRP Tanks & Associated Piping 36 000 kg (approx.) 40.52 MJ/kg 1 458 720 MJ
Miscellaneous 6 000 kg (approx.) 43.4 MJ/kg 260 400 MJ
TOTAL 2 504 040 MJ
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10% MAJOR OCCUPANCY PROVISION
• 3 2 2 8 (1)• 3.2.2.8.(1)
– AGGREGATE AREA OF ALL MAJORAGGREGATE AREA OF ALL MAJOR OCCUPANCIES IN A PARTICULAR DIVISION IS NOT MORE THAN 10% OF THE FLOOR AREA OF THE STOREY, NEED NOT BE CONSIDERED AS MAJOR OCCUPANCY FOR PURPOSES OF THISOCCUPANCY FOR PURPOSES OF THIS SUBSECTION, PROVIDED NOT F1 OR F2.
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10% PROVISION (CONT’D)10% PROVISION (CONT D)
• MUST BE A MAJOR OCCUPANCY• MUST BE A MAJOR OCCUPANCY– DOES NOT INCLUDE SUBSIDIARY USES.
• APPLIES WELL TOA STRIP PLAZA WITH AN INDUSTRIAL– A STRIP PLAZA WITH AN INDUSTRIAL OCCUPANCYGROUND FLOOR OF CONDO– GROUND FLOOR OF CONDO
• RETAIL AND RESIDENTIAL MAJOR OCCUPANCIES
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10% PROVISION (CONT’D)10% PROVISION (CONT D)
• F1 OR F2 CAN BE LESS THAN 10% AND• F1 OR F2 CAN BE LESS THAN 10% AND ARE REQUIRED TO BE CONSIDERED A MAJOR OCCUPANCY FOR 3 2 2MAJOR OCCUPANCY FOR 3.2.2.
• THIS 10% RELAXATION IS ONLY FOR• THIS 10% RELAXATION IS ONLY FOR THIS SUBSECTION
• ONLY FOR 3 2 2 – CONSTRUCTIONONLY FOR 3.2.2. CONSTRUCTION
• OCCUPANCY PROHIBITIONS ARE STILL
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OCCUPANCY PROHIBITIONS ARE STILL APPLICABLE.
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10% PROVISION10% PROVISION
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10% PROVISION10% PROVISION
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INDUSTRIAL OCCUPANCY SUMMARY
• USE COMMON SENSE• USE COMMON SENSE
• ASK DESIGNER TO CLASSIFY• ASK DESIGNER TO CLASSIFY MAJOR OCCUPANCY
• HAVE RIGHT TO ASK FOR A FUEL LOAD / COMBUSTIBLE LOAD STUDYLOAD / COMBUSTIBLE LOAD STUDY– STAMPED BY P.ENG.
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NOTES:NOTES:
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CASE STUDY: SPRAY BOOTHCASE STUDY: SPRAY BOOTH
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CASE STUDY: SPRAY BOOTHCASE STUDY: SPRAY BOOTH
• COMMON EXAMPLE OF F1• COMMON EXAMPLE OF F1 OCCUPANCY
• SPRAY APPLICATION OF FLAMMABLE LIQUIDS
• WHAT IS “SPECIAL FIRE HAZARD”?
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SPRAY BOOTH HAZARD:SPRAY BOOTH HAZARD:
• THE ATOMIZATION OF FLAMMABLE• THE ATOMIZATION OF FLAMMABLE OR COMBUSTIBLE MATERIAL AS A RESULT OF SPRAYINGRESULT OF SPRAYING
• LEADS TO FREQUENT OPERATIONS DURING WHICH A FLAMMABLE / EXPLOSIVE VAPOUR-AIR MIXTURE IS PRESENT
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CASE STUDY: SPRAY BOOTHCASE STUDY: SPRAY BOOTH
• OTHER EXAMPLES OF F1 OCCUPANCIES• OTHER EXAMPLES OF F1 OCCUPANCIES ALSO FOCUS ON HAZARDOUS MATERIALSMATERIALS
• HAZARDOUS MATERIALS MUST BE• HAZARDOUS MATERIALS MUST BE ADDRESSED IN CONFORMANCE WITH THE REQUIREMENTS OF THE FIRE CODETHE REQUIREMENTS OF THE FIRE CODE
• OBC SENTENCE 3 3 1 2 (1)
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OBC SENTENCE 3.3.1.2.(1)
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CASE STUDY: SPRAY BOOTHCASE STUDY: SPRAY BOOTH
• ONTARIO FIRE CODE (OFC)• ONTARIO FIRE CODE (OFC) SECTION 5.12 ADDRESSES SPRAY APPLICATION OF FLAMMABLE ANDAPPLICATION OF FLAMMABLE AND COMBUSTIBLE MATERIALS
• OFC SUBSECTION 5.14.5 ADDRESSES AUTOMOBILE UNDERCOATING, ALSO A SPRAY
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OPERATION38
CASE STUDY: SPRAY BOOTHCASE STUDY: SPRAY BOOTH
• LOCATION OF SPRAY OPERATIONS• LOCATION OF SPRAY OPERATIONS
• OFC REQUIRES SEPARATION IN• OFC REQUIRES SEPARATION IN CONFORMANCE WITH OBC, WHERE APPLICABLE (OFC 5 12 1 1)APPLICABLE (OFC 5.12.1.1)
• THIS IS A REFERENCE TO MAJORTHIS IS A REFERENCE TO MAJOR OCCUPANCY SEPARATION (OBC 3.1.3.1)
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SPRAY BOOTH CONSTRUCTION
• STEEL FRAME AND SHEET STEEL• STEEL FRAME AND SHEET STEEL AT LEAST 1.14 MM THICK, OR EQUIVALENT NONCOMBUSTIBLEEQUIVALENT NONCOMBUSTIBLE CONSTRUCTION
• INTERIOR SURFACES SMOOTH AND CONTINUOUS, FLOOR IN BOOTH NONCOMBUSTIBLE
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SPRAY BOOTH CONSTRUCTION
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SPRAY BOOTH CONSTRUCTION
• OVERSPRAY COLLECTION• OVERSPRAY COLLECTION
• FILTERS TO PREVENT COMBUSTIBLE• FILTERS TO PREVENT COMBUSTIBLE ACCUMULATION ON FAN BLADE, CASING AND DUCTWORKCASING AND DUCTWORK
• FILTER SUPPORTS NONCOMBUSTIBLEFILTER SUPPORTS NONCOMBUSTIBLE
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SPRAY BOOTH CONSTRUCTION
• FILTERS MUST BE READILY• FILTERS MUST BE READILY ACCESSIBLE FOR CLEANING OR REPLACEMENTREPLACEMENT
• PROCEDURES TO REPLACE PRIOR TO EXCESSIVE RESTRICTION OF AIRFLOW
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SPRAY BOOTH CONSTRUCTION
• FAN BLADES AND CASINGS MUST BE• FAN BLADES AND CASINGS MUST BE OF NON-FERROUS CONSTRUCTION OR DESIGNED TO PREVENTOR DESIGNED TO PREVENT CONTACT OF FERROUS PARTS
• REFERENCE AMCA SPARK-RESISTANT CONSTRUCTION (A/B/C)
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VENTILATIONVENTILATION
• VENTILATION IN SPRAY AREAS• VENTILATION IN SPRAY AREAS MUST:
– KEEP CONCENTRATION BELOW 25% OF LEL OF MATERIAL, AND,
– MEET A 30 M/MIN VELOCITY REQUIREMENT AT FACE OF BOOTH
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VENTILATIONVENTILATION
• DEDICATED EXHAUST FOR EACH• DEDICATED EXHAUST FOR EACH SPRAY BOOTH (EXCEPT WHEN LESS THAN 1 8 M2 FRONTAL AREA)LESS THAN 1.8 M FRONTAL AREA)
• NO RECIRCULATION
• GAUGES OR ALARMS REQUIRED TO MEASURE AIR VELOCITY
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TO MEASURE AIR VELOCITY
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VENTILATIONVENTILATION
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VENTILATIONVENTILATION
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VENTILATIONVENTILATION
• DUCTS MUST BE SHEET STEEL• DUCTS MUST BE SHEET STEEL, THICKNESS AS PER OFC, BASED ON DUCT DIAMETERON DUCT DIAMETER
• ACCESS OPENINGS FOR CLEANING• ACCESS OPENINGS FOR CLEANING
• CLEARANCE OF 457 MM BETWEENCLEARANCE OF 457 MM BETWEEN DUCTS AND UNPROTECTED COMBUSTIBLE MATERIAL
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COMBUSTIBLE MATERIAL
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VENTILATIONVENTILATION
• DUCTS THROUGH COMBUSTIBLE• DUCTS THROUGH COMBUSTIBLE PARTITIONS AND ROOFS REQUIRE A METAL COLLAR WITH 100 MM MINIMUMMETAL COLLAR WITH 100 MM MINIMUM CLEARANCE AND NONCOMBUSTIBLE INSULATING MATERIALINSULATING MATERIAL
• AIR DISCHARGE NOT WITHIN 1 8 M OFAIR DISCHARGE NOT WITHIN 1.8 M OF COMBUSTIBLE EXTERIOR WALL OR ROOF
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ROOF
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ELECTRICAL EQUIPMENTELECTRICAL EQUIPMENT
• ELECTRICS IN A SPRAYING AREA• ELECTRICS IN A SPRAYING AREA (BOOTH OR ROOM) MUST CONFORM TO CHAPTERS 18 ANDCONFORM TO CHAPTERS 18 AND 20 OF ELECTRICAL CODE
• CHAPTER 18 – GENERAL REQUIREMENTS
• RULE 20-400 – SPECIFIC FOR
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SPRAY BOOTHS51
ELECTRICAL EQUIPMENTELECTRICAL EQUIPMENT
• INSIDE SPRAY BOOTH AND• INSIDE SPRAY BOOTH AND EXHAUST DUCTWORK - CLASS I, ZONE 1 HAZARDOUS LOCATIONZONE 1 HAZARDOUS LOCATION
• OUTSIDE SPRAY BOOTH – CLASS I, ZONE 2 IN A 1.5 M RADIUS OF THE OPEN SIDE IN ALL DIRECTIONS, UP TO 1 M ABOVE THE CEILING OF
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THE BOOTH52
ELECTRICAL EQUIPMENTELECTRICAL EQUIPMENT
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ELECTRICAL EQUIPMENTELECTRICAL EQUIPMENT
• ELECTRIC MOTORS FOR EXHAUST• ELECTRIC MOTORS FOR EXHAUST FANS ARE NOT PERMITTED IN SPRAY BOOTHS OR EXHAUST DUCTSBOOTHS OR EXHAUST DUCTS
• METAL PARTS OF SPRAY BOOTHS• METAL PARTS OF SPRAY BOOTHS AND EXHAUST DUCTS AND PIPING FOR FLAMMABLE LIQUIDS MUST BEFOR FLAMMABLE LIQUIDS MUST BE ELECTRICALLY GROUNDED
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OPERATIONSOPERATIONS
• FLAMMABLE LIQUIDS MUST BE• FLAMMABLE LIQUIDS MUST BE STORED AND HANDLED IN CONFORMANCE WITH PART 4 OFCONFORMANCE WITH PART 4 OF THE OFC
• MAXIMUM QUANTITY IN THE SPRAY AREA IS ONE DAY’S SUPPLY –AREA IS ONE DAY S SUPPLY CONTAINERS KEPT CLOSED WHEN NOT IN USE
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NOT IN USE
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OPERATIONSOPERATIONS• SPRAYING EQUIPMENT IN SPRAYSPRAYING EQUIPMENT IN SPRAY
BOOTH MUST BE INTERLOCKED TO THE VENTILATION SYSTEM IN THETHE VENTILATION SYSTEM IN THE BOOTH
• DISCARDED FILTERS REMOVED TO SAFE LOCATION OR PLACED IN ASAFE LOCATION OR PLACED IN A METAL, WATER-FILLED CONTAINER AND REMOVED AT END OF DAY
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FIRE PROTECTIONFIRE PROTECTION
• REQUIRED• REQUIRED
• SPRAY AREAS SPRAY BOOTHS AND• SPRAY AREAS, SPRAY BOOTHS, AND SPRAY ROOMS MUST BE SPRINKLERED IN CONFORMANCE WITH NFPA 13IN CONFORMANCE WITH NFPA 13
• IF UNSPRINKLERED BUILDING FIREIF UNSPRINKLERED BUILDING, FIRE PROTECTION COULD BE AS PER NFPA 33
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FIRE PROTECTIONFIRE PROTECTION
• IF SPRINKLERED NFPA 13 REQUIRES• IF SPRINKLERED, NFPA 13 REQUIRES EXTRA HAZARD (GROUP 2) PROTECTION UNDER MOST CIRCUMSTANCESUNDER MOST CIRCUMSTANCES
• HEADS REQUIRE PROTECTION FROM OVERSPRAY BY THIN PAPER OR LIGHTWEIGHT POLYETHYLENE BAGS
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FIRE PROTECTIONFIRE PROTECTION
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FIRE PROTECTIONFIRE PROTECTION
• PORTABLE FIRE EXTINGUISHERS• PORTABLE FIRE EXTINGUISHERS REQUIRED IN CONFORMANCE WITH OFC SECTION 6 2WITH OFC SECTION 6.2
• CLASS B EXTINGUISHERS FOR FLAMMABLE AND COMBUSTIBLE LIQUIDS
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AUTOMOBILE UNDERCOATING
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AUTOMOBILE UNDERCOATING
• SPECIFIC EXAMPLE (OFC 5 14 5)• SPECIFIC EXAMPLE (OFC, 5.14.5)
• UNDERCOATING MATERIAL MUST HAVE FLASH POINT NOT LESS THAN 37.8 DEGREES CELSIUS
• LESS STRINGENT THAN FLAMMABLE PAINTING
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FLAMMABLE PAINTING
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AUTOMOBILE UNDERCOATING
• IF FLASH POINT LESS THAN 60• IF FLASH POINT LESS THAN 60 DEGREES CELSIUS THEN VENTILATION REQUIRED TO KEEPVENTILATION REQUIRED TO KEEP VAPOUR LESS THAN 25% OF LEL
• AIR MOVES ALONG LENGTH OF VEHICLE, EXHAUST APPROXIMATELY 1 M ABOVE FLOOR
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NOTES:NOTES:
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THANK-YOU
RANDY BROWN & MARK HARROP
RANDAL BROWN & ASSOCIATES LTD.105 6 LANSING SQUARE105 - 6 LANSING SQUARE
TORONTO ON M2J 1T5416-492-5886
WWW.RBACODES.COM
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