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Home My WebLink About13-1131 3351 Eldridge Ave plans 440 E Corporate Suite 103 Meridian,,Idaho 83642642 a. E N G /Af E E R //V G Phone:208.288.2181 Fax:208.288.2182 Date: June 20`h,2013 Project: Robert Weed Plywood Dust Collector—Twin Falls,Idaho Attn: Mr.Jarrod Bordi—Mechanical Inspector Twin Falls,ID 83303 Subject:Approval for Code Modification—Dust Collection System Dear Mr.Bordi, This letter is being submitted per section 105.1 of the IMC code,seeking a modification in the applications of IMC Sections 503.2 and 510.7 regarding exhaust fan construction and duct fire suppression for the dust collection system at the Robert Weed facility being proposed at 3351 Eldridge Ave.Twin Falls,Idaho. The requirements from `Section 503.2 Fans and Section 510.7 both pertain to fans conveying explosive or flammable vapors,fumes or dusts. In the attached documents,Robert weed is providing clarification that the duct collection system contains very low concentrations of duct particulate. This can be directly attributed to the infrequent use of equipment combined with low amounts of material generation. There are three attachments with supporting information: 1. A signed letter from Matt Bunner,VP of Operations at Robert Weed,clarifying how the equipment will be utilized and the approximate hours per week of operation. It is supplemented with a Cad layout including equipment identifiers. 2. An additional letter from Matt Bunner, showcasing his current operations in Bristol, Indiana and the correlating dust suppression systems installed. The intent is to show that the equipment and operations being proposed in Twin Falls is not unique and that there are years of operational experience with similar installations. 3. A letter from Carl Schalm who is a senior loss control representative from Pennsylvania Lumbermens Mutual Insurance Company. His company insures Robert Weed's operations. After reviewing the proposed project in Twin Falls, his company's opinion is that the installation would not require a fire suppression system due to the low hazards involved. Thank you for taking the time to review this installation for the project. Please feel free to contact me directly if have any questions or concerns. Si Wely,p James B.Schroeder,PE DC Engineering (208)571-5025 ROBERT WEED PLYWOOD CORP . '105 MAPLE S`IRUMT - P.O.BOX 487 o BRISTOL,IN 46507-0487 _ (574.)8463 4408 (74)848.7631 d FAX(574)04 -5679 Jarrod Bordi June 20, 2013 Plans Examiner/Inspector City of Twin Falls Dear Jarrod: We are requesting plan approval for dust collector system installation at our plant at 3351 Eldridge Ave., Twin Falls, Idaho. Per your request for details of how and when the equipment will be used. (see A,B,C references on attached CAD layout#1 Twin Falls plant): A).The dust collector is connected for pickup to two profile wrappers and one panel laminator and one cold press glue applicator. All of these machines need dust collection to vacuum away the small amount of nuisance dust on a sheet of plywood that could cause a surface imperfection under the decorative vinyl laminate. These machines possibly run up to 40 hours per week. B).Additionally,the collector is connected to one gang rip saw that runs approximately one day or less per week. The one or two saw blades used in a typical job setup do not produce more than a few pounds of dust per hour. The collector is also connected to a vertical panel saw that runs one day or less per week. This saw has one blade, and produces even less dust output than the gang rip saw. C).The last machine connected to the dust collector is a double end tenoner. This machine trims the end of a fabricated hollow core door for the RV industry. The end trim is accomplished by a shaper and saw blade combination. Waving never yet run this equipment, I cannot estimate the sawdust output, but currently we have a goal of 500 doors production per week for 2013. The trim of oversized material is by design less than 1/8"on four sides, so I anticipate small dust output here also. Please let me know if further information is needed, Thank you, Matt Bunner V.P.Operations Robert Weed Plywood Corporation i I i i A You m = � iw,)j F.o s �IaNr +w N "J �� JaypoAt®a,38'F.rbmlNAll• I s �\I I I I I r------ ---------------------- -----� I � � I I. e -:2 `J Lam.1 i I I I I ® F I I I ® [ I I I 1 I d I ' L-----------------------------------�� ' I I G amnnne gg gg �'�- y I E i rST�n a 129 �_J_r �I PSM - PR[(A DS SIIEh E A 27 350 MAXST. MI. 273l0 MA �T. Twin Falls Facility ,. O E M' WEEU PLYWOOD CORP . 705 MAPLE STIR, ITT P.O. BOX 447 o F 111S OL,IN 46607-0487 Y (574.) 848-4408 (57 4)1348-7631 o PA (574) 848-5079 a Jarrod Bordi June 20,2013 Plans Examiner/Inspector City of Twin Falls DearJarrod: We are requesting plan approval for dust collector system installation at our plant at 3351 Eldridge Ave., Twin Falls, Idaho. Per your request for details of similar facilities,see attached Bristol Indiana plant layout encompassing 750,000 sf of production and warehouse areas. Most areas at Robert Weed Plywood serviced by dust collection equipment do not have spark suppression, because Pennsylvania Lumbermens Mutual Insurance has verified our production processes do not produce sparks and risk of fire. A. We do have spark suppression in WPD area building#5. This department has many saws, CNC routers, edgebanders,foilers, etc. The dust volume produced is substantial. B. Spark suppression is also in place in the collector line to the silo. This is a pickup from two departments,and it was judged a valid use of spark suppression because so many machines feed into this collection point. C. Milling area with 7 moulders and 3 saws does not have spark suppression. It was judged not necessary due to only wood cutting and the slight risk of a woodworking tool creating a spark. D. WPD buildings #31 and#32 do not have spark suppression,due to only wood cutting and the slight risk of a woodworking tool creating a spark. E. LPD panel lamination area does not have spark suppression,as only nuisance dust on a plywood panel is brushed and vacuumed off the surface to prevent a visual blemish in the finished panel product. Please let me know if further information is needed. Thank you, Mat Bunner V.P.Operations Robert Weed Plywood Corporation I 32 C 14 "'A 1408 66 f 12W i 125 I 1d09 9 9 1402 N N BA 14EC 60 � o 04 o R ° e v-- etJ l Q ° _ 14ES m 294 ° It 1401 —�Z a CA �_� � ° �� 14 1P J J I w �� 3 y�� It`� ❑ w w w J w w w ` Wrap/Mill w w w w w w w J• Y 2 ® w w w w w r�o � 14E2 16 LFD y w w w J^ I L•0.W�-1.�4{.�C 1� � � w w w W w =3 Bal. ❑ w w w m w 16W J J• v J w w J• 470 �® Lunch w w w w w area Upstairs LPD Ofte w w 16-01 w w w w 16E1 w w w w w v L w 17 HHIIHHHH RTF ° P31 L� ./ O i 1 ° 6 cJ Z 17-03 1 S 17-04 i I Page 1 of 1 Spark Detection Flame Suppression (SDFS) t Carl Schalm X Y to: MattB 06/17/2013 06:14 PM Hide Details From: "Carl Schalm" <CSchahn@pimins.com> To: -�MattB@robertweedplywood.com> History: This message has been replied to and forwarded. Dear Matt, PLM(Pennsylvania Lurnbermens Mutual Insurance Company)is the largest insurer of the wood industry.With over one hundred years insuring the niche we have extensive experience in all hazards associated with wood processing.After discussion with the manufacturers of the SDFS equipment and the other insurers in the wood manufacturing area,we have developed a list that we use to decide if STFS is required. I. There must be 5 or more machines being run on the system.Machines must be of 15 hp or more and must be running at the same time. 2. The wood being machines must be dried wood not green. 3. There must be at least 20 feet of duct to install the STFS system. 4. If the wood is Walnut the above does not apply and a STFS system must be installed. The insurance industry has developed these requirements because we do not feel that systems with less equipment or operations that use machines infrequently, generate enough refuse to cause an explosion hazard per NFPA 664.1 have been told that RWP will be operating one rip saw and a shaper at the Idaho location.In addition the machines will not be operating each day of the week.With this information,as the representative for PLM and also according to court cases "The Authority Having Jurisdiction", I will not require the installation of a STFS system in the plant, Sincerely, Carl Schalm SR Loss Control Representative,PLM Carl Schalm CPCU,ALCM Senior Loss Control Services Representative Pennsylvania Lumbermens Mutual Insurance Company One Commerce Square 2005 Market Street, Suite 1200 Philadelphia, PA 19103 Email: cschalm@plmins.com Direct: (267)825-9130 1 Cell: (248)736-6520 Fax: (267)825-9129 Main: (800)752-1895 Web: Aww.plmins.com Your opinion matters. 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I i file:///C:/Users/tub/AppData/Local/Temp/notes4O944A/—webO727.htm 6/20/2013 440 E Corporate Dr.,Suite 103 3642 E/V G/At E R //V G Meridian,Idaho Phone:208.288.2181.2181 Fax:208.288.2182 Date: June 20'h,2013 Project: Robert Weed Plywood Dust Collector—Twin Falls,Idaho Attn: Jim Auclaire—Fire Marshal Twin Falls Fire Department 345 Second Ave.East Twin Falls,ID 83301 Subject:2009 IFC Code Review Comments The following comments by your office have been addressed in REIN below: Installation Install as per the manufactures recommendations and NFPA 664 for Prescriptive-Based Design. (NFPA 664,4.7.3) (Voted on drawings in `shadowbox note'. Ductwork Ductwork shall be metallic. Flexible ducting is permitted for final machine connection in a length not exceeding the minimum required for machine operation. (NFPA 664, 8.2.2.2.1.1). Addressed in general note G4. Sources of Ignition Smoking or the use of heating or other devices employing open flame, or the use of spark-producing equipment is prohibited in areas where combustible dust is generated, stored, manufactured, processed or handled. (IFC 1303.1). General note G8 added. Housekeeping Accumulation of combustible dust shall be kept to a minimum in the interior of buildings. Accumulated dust shall be vacuum or other means that will not place combustible dust in the air. (IFC 1303.2) General note G9 added. Please let me know if you have any additional comments, jo,'�"�S r— k James B.Schroeder,PE DC Engineering (208)571-5025 440 E Corporate Suite 103 Meridian,,Idaho 8364242 E/V G/V E E R //V G Phone:208.288.2181 Fax:208.288.2182 Date: June 21",2013 Project: Robert Weed Plywood Dust Collector—Twin Falls,Idaho Attn: Mr.Jarrod Bordi Mechanical Inspector Twin Falls,ID Subject:IMC Code Review Comments Dear Mr.Bordi, The following comments by your office have been addressed in RED below: • Please show compliance with section 503.2 of the 2009 INC. Please reference the attached letter from DC Engineering requesting a code modification per IMC section 105.1 • Please show compliance with section 510.7 of the 2009 IMC(and IFC). Please reference the attached letter from DC Engineering requesting a code modification per IMC section 105.1 • Section 510.8 of the 2009 IMC requires G90 coating while plans call for a G60 coating. Material specification changed to show G90 coating • Table 510.8 of the 2009 IMC requires ducts over 18" in diameter to be 20 gage material. Material specification changed toreflect proper gage of material per table 510.8. • Please show compliance with section 510.8.3 of the 2009 IMC. Explosion relief system installed in Donaldson collector and noted on drawings. • Please show compliance with section 511.1.5 of the 2009 INIC Explosion relief system installed in Donaldson collector and noted on drawings. Thank you for taldng the time to review this installation for the project. Please feel free to contact me directly if have any questions or concerns. Xly, Kck;zif::7� James B.Schroeder,PE DC Engineering (208)571-5025 GENERAL NOTES: RECEIVED OWNER PROVIDED 60.0 CYCLONE WITH 10'0 STEEL CAPTURE TANK ct COLLECTION SYSTEM SHALL USE APPROVED,L1511D AND LABELED EQUIPMENT Q ti J(IN 2 I 13 SUITABLE FOR WOOD DUST COLLECTION. 1 CY AND DRIVE THROUGH. G2 CLEAN-OUT (� ; OMTyDR TO FACILITATEECLEANINGG ANDAIi E INSTALLED MAINIFILMNCN�ITEM 0 LARGER DUCTWORK NOTE: NOTE. G3 BUST CAKE DAMPERS,**ERE INSTALLED FOR BALANCING SIWS BE 'Y m INSTALL EXTERIOR DUST COLLECTION SYSTEM OWNER PROVIDED SEE DETAILS 2&3 FOR ELEVATION VIEWS LOCKABLE TO PREVENT INADVERTENT MOVEMENT AND DISRUPTION OF SYSTEM MATERIAL SPECIFICATIONS: . „ PER MANUFACTURER'S RECOMMENDATIONS. 17"NEW YORK BLOWER FAN SCE. s 8 1 ti 3: EQUIPMENT TO COMPLY WITH NFPA 664 AS SIZE 294 LS SERIES 20 WITH GAL NON-CONDUCTIVE FLEXIBLE DUCTS AND HOSES MAY ONLY BE USED FOR THE 1. DUCT CONSIRUCIION �1� �P$3 REQUIRED BY LOCAL CODES AND THE AHJ. 30HP TEFC MOTOR® ANAL.MACHNE CONNECTION IN A LENGTH NOT EXCEEDING THE MINIMUM 1.1. DUCTWORK MUST BE A MINIMUM 20 GAUGE SPIRAL OR MELDED PIPE WITH VV 7,900 CFM AND 5000 FPM REQUIRED FOR MACHINE OPERATION. ELECTRICAL BONDING AND GROUNDING G90 GALVANIZED COATING PER 2OD9IMC TABLE 510.83. 1 BETWEEN WOODWORKING EQUIPMENT AND THE DUCT COLLECTION SHALL BE 12. FITTINGS: MINIMUM 20 GAGE SPIRAL OR WELDED FI RINGS WITH SMOOTH 'S 0 MAINTAINED. INTERIOR SFNIS. 16°0 121. ALL FIELD JOINTS MUST BE AIR-TIGHT. UTILIZE SILICONE CAULKING G5 DONA DSON DUST COLLECTION EQUIPMENT SHALL BE EQUIPPED WITH A AND J DIAMETER RIVETS(OR APPROVED ECIINAENT). SHEET METAL BIINDICATOR TO COMPIEIELY SHUTDOWN THE SYSTEM IF SAWDUST BUILDS UP SCREWS ARE NOT ALLOWED. PAST THE HIGH LEVEL. 1.2.2. LATERAL TEES TO PE HORIZONTAL WITH VERTICAL ELBOW DROPS TO OWNER PROVIDEDER FAN NOTE• EQUIPMENT CONNECTW. OWNER PROVIDED THE COLLECTOR UNIT HAS FOAM DOOR G6 DUST ET THE OR,GROUNDING EXHAUST FIN AND ALL SlSIDA COMPoNENIS 7}. HANGERS TO BE LOCATED EVERY 10 FEET ON MAIN BRANCHES AND AT om SIZE 5G4 LS SERIES 20 WITH DONALDSON DUST COLLECTOR EXPLOSION VEIN TO ALLOW EXPLOSIVE TO MEET THE GROUNDING REOUIREMENIS 4F NFPA fi84. LEAST ONE HANGER ON BRANCHES LESS THAN 10FT IN LENGTH. 4,�VGE �6 . MODEL#232RFW8. TANK PRESSURE TO EXIT BUILDING.UNIT ALSO cSr x t' 75HP TEFC MOTOR.CAPACITY= G7 DUCTWORK BRANCHES SHOULD CONNECT TO THE MAWS AT A MAXIMUM ANGLE'& o Xp - 23,000 CfM 05000 FPM VELOCITY=280FPM HAS HEAT LINK ACTIVATED EXPLOSION BACK OF 30 DECREES. AIR TO CLOTH=9.5 TO 1 FLASH DOOR TO FORCE ANY EXPLOSION TO 9017 EXIT THE BUILDING AND CANNOT G6 SMOKING OR THE USE OF HEATING SPARK-PRODUCING OTHER ODACEN EMPLOYING OPEN ';ma �o m BACK-FLASH PIPES TO RE-ENTER BUILDING. AREAS WHEREECOMBUSSII STT I GEN AETEEDD�MED PANUFACTTUREOHIBITED D Of A 1p�O tir Flolx.p PROCESSED OR HANDLED. a soMP 0 20 2013 Gg ACCUMULATION F IL COMBUSTIBLE DUST DUS BE KEPT TO A MINIMUM IN THE MEAN T OF BUILDINGS ACCUMULATED DUST SHALL BE VACUUM OR OTHER 29°0, 18960CFM MEANS THAT WILL NOT PLACE COMBUSTIBLE DUST IN THE AIR. w (4133 FPM) IM 40X40 Pa6eN Hem commenu as 1 Installation Install as per the manufactures recommendations and NFPA 664 for Prescriptive- KEYED NOTES: Based Design.(NFPA 664,4.7.3) 1 Ductwork Ductwork shall be metallic.Flexible ducting is permitted for final machine connection 1. INSTALL BAST GATE BNANCE DAMPER IN IW O FUNRE TAP. PAMPER TO BE in a length not exceeding the minimum required for machine operation.(NFPA 664, CAST ALUMINUM WITH LOCK1dE GALA.STEEL SLIDING DOG,SIZED TO MATCH RENRN AIR 018960CFM DUCT DIAMETER AND LWANCED TO CAM SHOWN. 8.2.2.2.1.1) PROVIDE WITH DIFFUSION GRILLE. 2. INSTALL BLANCH LINES OFF 15'0 MAIN TO'DEr MACHINE PER TT MANUFACTURER'S RECOMMENDATIONS. 1 Sourcesoflenition C Smoking or the use of heating or other devices employing open Flame,=ofspark-producing equipment is prohibited in areas where combustible d 26'W, 18960CFM - generated,stored,manufactured,processed or handled.(IFC 1303.1) (5142 FPM) 1 Housekeeoine Accumulation of combustible dust shall be kept to a minimum in the interior of buildings.Accumulated dust shall be vacuum or other means that will not place combustible dust in the ailLiM 1303.2) VERTICAL MOUNT FIRE PER WITH FUSIBLE LINK 0 165E Q _ EXPLOSION VEIN (TYP OF 2) BACK OW FIRE DAMPER 15.0,60DOCFM 22.0, 12960CFM (4889 FPM) (4909 FPM) 2 DUST COLLECTION SYSTEM ELEVATION SCALE HT.S 6.0,950CFM (4838 FPM) 20.0. 12010CFM (5504 FPM) 2 6.0,950CFM (4838 FPM) 19.0, 10620CFMTFF (5393 FPM) uUk CKU U AVPER 4'0,440CFM5/�_ \ �i (5042 FPM) 16.0,7020CFk1 11.0,3600CFM (5027 FPM) U (5454 FPM) 9.0,2420CFM 8.0,1800CFM (5477 FPM) (5156 FPM) 8"0, 1800CFM (5156 FPM) - ~ 10°0,2800CFM UILI � 3 DUST COLLECTION SYSTEM ELEVATION g g 7.0, 1120cFM 8"0. 1800CFM SCNE HT.S Q \) // 7°0,1300CF1A (4190 FPM) (5156 FPM) GRIZZLY CYCLONE J (4864 FPM) y � Building Plans have be'=reviewed and approved SCALE.' 1/8'=1'-O' S S!NCti00 Subject DATE 04 30/2015 8.0, 1800CFM =ieid Inspection 5.0,680CFM DRAWN BY..EP (5156 FPM) (4987 FPM) ,-._ \Q 01\0 �1 t\^_ REVISION: 4'0,440CFL1 Dale \�Y-\1 r"J (5042 FPM) SHEET ' 1 DUST COLLECTION M2.1 SERE:,/a'=1'-0• \\dce\designdata\Projects\2013 Jobs\13STC01-RWP Dust Collection System\Cadd\M21.dv(g,6/20/2013 4:35:27 PM,DWG to PDF.pc3 ��