Attachment 1 Blast_Vacuum_Dust Collector.pdf

LEASE SPECIFICATION: TEMP PARTICULATE BLAST (TPBLST)

NAVAL BASE POINT LOMA (NBPL)

TPBLST SPECIFICATION SHEET 1 OF 3

D LEASE SPECIFICATION — SPECIFIC MACHINERY REQUIREMENTS (BY MACHINE TYPE)

1. DRY DUST COLLECTOR: DDC [12K CFM]–

a. Description: The machine shall be designed for the relatively lighter-duty collection (i.e. suction) of air contaminated by airborne dry dust. An equivalent machine meeting the specified performance requirements for the normal capacity (40 Hp) with [extendable legs designed to accept one or two each drums at the discharge outlet hopper] Dry Dust Collector (DDC [12K CFM]–2) is the 12K cfm CYCLONE™ as manufactured by Industrial Vacuum Equipment Corporation® or the 10K cfm M10 Dust Collector as manufactured by ECS.

b. Capacity & Utilities:

(1) Airflow: An integrated blower (air-handler) is required for independent operation of the unit in which the blower shall be a centrifugal type fan and motor. With the blower operating at full speed, the airflow in cubic feet per minute (cfm) combined with either the fan's external Total Static Pressure (TSP) in inches of Water Gauge (WG) and/or the motor's power rating in horsepower shall be as stated in Table A1.

(2) Electricity: Electrical power shall be 460 volts nominal (440 volts minimum), three phase, 60 hertz. The electric motor for the blower shall be a low speed, high efficiency, industrial type rated for at least forty horsepower (≥40 hp).

Because of limited power, the unit shall be designed for protection via no greater than a 60 ampere circuit breaker.

Thus, the motor must have soft-start capability.

c. Filtration: The unit shall be furnished with pre-installed brand new virgin (clean) filters. The filter elements for the Dry Dust Collector shall be a highly efficient excellent moisture resistant media such as a QX grade cellulose or pleated polyester and not paper. The collection efficiency of the filter elements shall be 99.9% or better by weight on uniform flow of particles of one micron in size or larger based on a standard performance test procedure as provided by ASHRAE. The filter housing shall be easily accessed such as via a quick-release type mechanism and the filters shall be of a type that can be readily replaced such as by cartridge elements. To ensure most dirt and debris is removed upon change-out, filter elements / cartridges shall be replaced either via top loading or such that they do not pass through the clean air plenum.

The unit shall feature a pulse jet style cleaning system. In the parlance of filtration vis-à-vis "air to cloth ratio", the lower the value for the ratio of the machine's rated airflow in cfm [air] to the equivalent surface area of filtration material in square footage [cloth] the better and shall be no higher than five ([air] ÷ [cloth] ≤ 5.0). The minimum equivalent filtration area for a nominally rated 10K cfm Dry Dust Collector is thus, 2K SF (10K cfm ÷ 5.0).

d. Control: The unit shall include a permanently mounted control board accessible without opening any panels with pressure gauge(s) and other indicators as necessary for monitoring and control. The unit shall be completely wired for safety, capacity, and operation such as a power/switch system with circuit breakers, manual/automatic controller, motor overload protection, high/low pressure cut-outs, energy control system, and/or other essential components. The unit shall be fully controllable under a wide range of loads even though the diurnal and seasonal ambient temperatures vary greatly. This particular Dry Dust Collector's NEMA 4 instrument panel shall incorporate a soft-start package for the motor so as to diminish the power surge during start-up; ON-OFF power switch with indicator light; emergency STOP power button; ON-OFF air pulse switch; manual outlet dampers; an inlet air regulator; and a magnehelic gauge.

e. Design & Construction: Preferably, the bottom of the dust collection bin or hopper shall be an inverted double pyramid shaped structure having a fifty degree slide slope or steeper that dumps directly into two discharge outlets without the need of an auger and each of the two outlets shall be complete with an adjustable fifty-five gallon drum cover (manual crank) with an attached flexible hose connecting the hopper to the top of the cover and a manual outlet slide gate or damper with protective screen. If not as preferred and described above, then a manually operated auger is necessary to push the collected debris to a single drum. When the Dry Dust Collector legs are extended, the height of the discharge outlet shall allow for easy installation and removal of a standard fifty-five gallon drum on a standard pallet (i.e. ≥40").

f. Sound Attenuation: This particular Vacuum Recovery Unit shall incorporate a sound attenuation package as an integral part of the unit's design. After its original construction, the machine shall have been tested by a firm independent of the manufacturer for sound emission compliance. The test data shall demonstrate that sound levels do not exceed 85dB[A] at a distance of five feet from the skid when the machine is operating under full load at a minimum of five perimeter locations. Sound data must be submitted with the proposal.

g. Options: The Dry Dust Collector shall include four each sixteen inch diameter by twenty-five foot lengths of high suction pressure (4 ea: 16"Ø × 25'L × ≥5"Hg) semi-flex ducting w/ wearstrip (i.e. FLEXAUST® FSP Bridge).

h. Transition: The machine's process air inlet and/or outlet piece shall accommodate round flexible ducting to fit onto its external circumference as dimensioned in TABLE P1. The dimension provided in the table is a nominal size to reflect the inside dimension of the flexible ducting. Actual outside diameter (OD) dimension for the metal transition fitting shall be one-quarter inch less (−¼") with a one-eighth inch tolerance (±⅛") for sheet metal (e.g. 16" = 15¾"±⅛"). For protection / cleanliness, removable weather covers are required.

TPBLST SPECIFICATION SHEET 2 OF 3

D LEASE SPECIFICATION — SPECIFIC MACHINERY REQUIREMENTS (BY MACHINE TYPE)

2. VACUUM RECOVERY UNIT: VRU [QUIET]–N

a. Description: The machine shall be designed for the heavy-duty recovery (i.e. vacuum) of spent dry or wet blast grit type matériel, whether that be steel shot (typically 237 lb / cubic foot) or "Black Beauty" (e.g. coal or boiler slag), from various surfaces.

b. Equivalent: An equivalent machine meeting the specified performance requirements for the Normal capacity (150 Hp) with [sound attenuation] Vacuum Recovery Unit (VRU [QUIET]–N) is the 2350 scfm QUIET CUBE™ as designed & manufactured by Industrial Vacuum Equipment Corporation® or the 2300 scfm M-150 MARINE VACUUM SYSTEM™ as designed & manufactured by Environmental Containment Systems®, LLC (ECS).

c. Capacity:

(1) Airflow & Vacuum Pressure: For the Normal capacity machine, the vacuum portion shall be capable of producing at least twenty seven inches of mercury or greater (≥27"Hg) of suction pressure while conveying at least two thousand three hundred cubic feet per minute (≥2,300 cfm @ 27"Hg).

(2) Extraction: For the Normal capacity machine, the rate of extraction shall be at least six to eight tons per hour (6-8 ton/hr) dependent on the density of the blast matériel.

(3) Distance & Lift: For the Normal capacity machine, the minimum conveyance shall be four hundred feet (≥400') with a minimum vertical lift to the classifier / recycler or collection tank from the suction end of the hose of seventy feet (≥70').

d. Utilities: The machine shall require only two types of utility connections – electricity and pneumatic air.

(1) Electricity: Electrical power shall be 460 volts nominal (440 volts minimum), three phase, 60 hertz. The electric motor for the blower shall be a low speed, high efficiency, industrial type rated for at least one hundred fifty horsepower (≥150 hp). Because of limited power, the unit shall be designed for protection via no greater than a 200 ampere circuit breaker. Thus, the motor must have soft-start capability.

(2) Pneumatic Air: Pneumatic air requirements shall be Low Pressure Air (LPA) no greater than ninety psig (≤90 psig) at a relatively low volume for its rate of consumption.

e. Filtration: The unit shall be furnished with pre-installed brand new virgin (clean) filters. The filter elements for the Vacuum Recovery Unit shall be HEPA type with a MERV rating of 17 or better equivalent to the ASHRAE Standard 52.2 Particle Size Removal Efficiency of equal to or better than 99.97η for a particle size of 0.3 micrometer. This unit shall feature cyclonic separation and a continuous reverse pulse filter cleaning system.

f. Control: The unit shall include a permanently mounted control board accessible without opening any panels with pressure gauge(s) and other indicators as necessary for monitoring and control. The unit shall be completely wired for safety, capacity, and operation such as a power/switch system with circuit breakers, manual/automatic controller, motor overload protection, high/low pressure cut-outs, energy control system, and/or other essential components. The unit shall be fully controllable under a wide range of loads even though the diurnal and seasonal ambient temperatures vary greatly. This particular Vacuum Recovery Unit's NEMA 4 instrument panel shall incorporate a soft-start package for the motor so as to diminish the power surge during start-up; ON-OFF power switch with indicator light; emergency STOP power button; ON-OFF air pulse switch; ON-OFF material dump switch; ON-OFF vacuum pressure switch; and a disconnect lever.

g. Design & Construction: This particular Vacuum Recovery Unit shall be of a positive displacement design; incorporate an automatic cone vibrator; and include a manhole (typically 10"Ø) for inspecting the loading bin. The unit shall not require liquids of any type either for cooling or for vacuum production. Recycled air will not be used in the vacuum production. Air from the discharge silencer will not be recycled, but rather, vented to atmosphere.

h. Sound Attenuation: This particular Vacuum Recovery Unit shall incorporate a sound attenuation package as an integral part of the unit's design. The unit shall have dual inlet and discharge silencers to include a sound attenuation enclosure.

After its original construction, the machine shall have been tested by a firm independent of the manufacturer for sound emission compliance. The test data shall demonstrate that sound levels do not exceed 85dB[A] at a distance of five feet from the skid when the machine is operating under full load at a minimum of five perimeter locations. Sound data must be submitted with the proposal.

i. Transition: The machine's process air inlet and/or outlet piece shall accommodate round flexible ducting to fit onto its external circumference as dimensioned in TABLE P1. The dimension provided in the table is a nominal size to reflect the inside dimension of the flexible ducting. Actual outside diameter (OD) dimension for the metal transition fitting shall be one-quarter inch less (−¼") with a one-eighth inch tolerance (±⅛") for sheet metal and three-sixteenths inch tolerance (±3/16") for hard pipe (e.g. 5" nominal pipe ≡ 6" ducting).

TPBLST SPECIFICATION SHEET 3 OF 3

D LEASE SPECIFICATION — SPECIFIC MACHINERY REQUIREMENTS (BY MACHINE TYPE)

3. BLAST, MEDIA CLASSIFIER, & VACUUM RECOVERY (BMR): BMR [V1≥23CF]–2 & BMR [WHEELS]–1

a. Description: The BMR machine is a combined abrasive Blast (B), Media (M) classification, and vacuum Recovery (R) unit a.k.a. "Vacuum & Blast" (VB) or "Blast & Recovery System" (BRS) machines.

b. Equivalent: An equivalent machine meeting the specified performance requirements for the BMR [V1≥23CF]–2 dual outlet (two person) unit is the VB–1200 as originally designed and manufactured by IPEC Advanced Systems, Inc. and since modified or refurbished with a much larger Media Reclaimer Storage Hopper of 23 cubic feet or greater and for the BMR [V1≥6½CF]–1 single outlet (one person) unit is the portable (i.e. two wheeled version) 3.5 CU.FT.

BRS with the 6.6 cubic foot Media Reclaimer Volume as manufactured by Axxiom Manufacturing, Inc.

c. Capacity & Utilities:

(1) Pneumatic Air: Pneumatic air requirements shall be Low Pressure Air (LPA) no greater than one hundred and twenty five psig (≤125 psig) at a volume for its rate of consumption.

d. Control: The unit shall include a permanently mounted control board accessible without opening any panels with pressure gauge(s) and other indicators as necessary for monitoring and control. The unit shall be completely wired for safety, capacity, and operation such as a power/switch system with circuit breakers, manual/automatic controller, motor overload protection, high/low pressure cut-outs, energy control system, and/or other essential components. The unit shall be fully controllable under a wide range of loads even though the diurnal and seasonal ambient temperatures vary greatly.

e. Design & Construction: The Blast (B) portion of the machine shall be a stacked assembly in which the top volumetric unit (V1) is a Reclaimer Storage Hopper (a.k.a. Storage Hopper or Media Reclaimer). This tank shall process or recycle abrasive "media" such as steel grit via both an air wash system and a turbine vibrator sleeving system resulting in high quality for the reclaimed material. The bottom volumetric unit (V2) of the stacked assembly shall be an ASME coded single "Chamber" pressure "Vessel" a.k.a. "Blast Pot" with outlet(s), quantity as specified, capable of being connected to a deadman type remote via a pneumatic line (deadman remote & pneumatic line NOT REQUIRED). For blasting, the "Vessel" or "Blast Pot" is pressurized. When additional abrasive media is needed, the blast "Chamber" or "Pot" is depressurized via a conveniently positioned "blowdown" type valve and the chamber is then refilled from the "Storage Hopper" above. The Media (M) classification system shall be integrally connected to the Storage Hopper and the vacuum Recovery (R) mechanism. Abrasive to be recycled can be vacuumed into the top of the Media Reclaimer Storage Hopper where it falls onto a vibrating screen. The dust and fine grit particles that remain suspended in the air shall be drawn into a dust collection type mechanism. Reclaimed or "cleaned" abrasive shall fall through the vibrating screen into the Storage Hopper. Debris and paint chips shall be retained by the screen whereupon it may be removed either manually or via the vacuum hose attached to the dust collection type mechanism. The vacuum Recovery (R) mechanism shall use urethane eductor pump(s) to generate a vacuum (negative) pressure with airflow. The filter elements and/or cartridges shall be automatically purged via self-cleaning pulse jets while vacuuming. Additional filter purging shall be accommodated via a switch to engage the dust collector mechanism.

f. Options: The Blast / Media classification / vacuum Recovery (BMR) machines shall meter each outlet with the 1¼" Thompson Valve® II with tungsten carbide sleeve metering valve as designed / manufactured by Schmidt and Axxiom Manufacturing, Inc. The multiple design improvements of this second generation Thompson valve such as a larger aperture allowing for improved media flow into the air stream as well as instant and smooth response to pneumatic deadman controls makes this feature a must for the units. At the oulet(s) to the BMR machine, the Contractor need not provide the vacuum blast gun a.k.a. "head" or "nozzle", nor outer brushes, nor pneumatic hose, nor deadman's switch(es). Such extra hardware will be supplied by the Government.

g. Transition: None.