1、 A-A-50580 9999974 0174148 791 INCH-POUND A-A-5 05 8 O ADd 7.1997 SUPERSEDING 13 May 1991 MIL-T-2343 5F COMMERCIAL ITEM DESCRIPTION TRUCK, TANK: SEWAGE OR WASTE COLLECTION, COMMERCIAL 4 BY 2 The General Services Administration has authorized the use of this commercial item description for all Federa
2、l agencies. 1. SCOPE. This commercial item description (CID) covers commercial sewage or waste collection trucks intended for collection of waste or raw unscreened sewage by suction. 2. CLASSIFICATION. Trucks shall be of the following types as specified (see 7.2): Type I - 1,300-gallon (4 921 litre
3、(L) minimum to 1,500-gallon (5 678 L) capacity pressure vessel. Type II - 2,000-gallon (7 570 L) minimum capacity pressure vessel. 3. SALIENT CHARACTERISTICS. 3.1 Design. The truck shall consist of a pressure vessel, a power-takeoff-driven vacuum pump, complete with all necessary piping, valves, con
4、trols, and safety devices. The sewage collection components shall be mounted on a four-wheel, two-rear-wheel-drive, diesel-engine-driven chassis with conventional cab. The unit shall be Department of Transportation (DOT) certified for hazardous, flammable, corrosive, class B poison or combination th
5、ereof 3.2 Standard commercial product. The sewage collection truck shall, as a minimum, be in accordance with the requirements of this CID and shall be the manufacturers standard Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data which may improve this docu
6、ment should be sent to: Commanding Officer (Code lSSl), Naval Construction Battalion Center, 1000 23rd Avenue, Port Hueneme, CA 93043-4301, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 2320 Provided by IHSN
7、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50580 9999974 0174149 628 I A-A-50580 commercial product. Additional or better fatures which are not specifically prohibited by this CID but which are a part of the mandacturers standard commercial product, shall b
8、e included in the sewage collection truck being furnished. A standard commercial product is a product which has been sold or is being sold or is being currently offered for sale on the commercial market through advertisements or manufacturers catalogs, or brochures, and represents the latest product
9、ion model. 3.2.1 Coolant system. The unit shall be equipped with a heavy duty cooling system capable of maintaining a coolant temperature below the boiling point of the coolant when the truck is operated in ambient air of not less than 125 degrees Fahrenheit (OF) (52 degrees Celsius (“C) at an altit
10、ude of 10,000 feet (3 048 metre (m) with a load equal to the gross vehicle weight rating. The coolant system shall include a deaeration system and a surge tank or a coolant recovery reservoir of not less than a 2-quart (2 L) capacity. 3.2.1.1 Alarms and indicators. A high coolant temperature or low
11、coolant level alarm buzzer and red indicator warning light shall be provided on the cab dash instrument panel. 3.2.1.2 Coolant temperature control. The unit shall be provided with a thermostatic coolant temperature control. The thermostat shall control both the flow of coolant through the radiator a
12、nd the radiator shutters. 3.3 Drain pluas. Permanent magnet type drain plugs shall be provided for the manual transmission and the rear axle. 3.4 Towing: devices. Not less than two hooks or loops, mounted to the fiame or to rigid members which are attached to the fiame, shaii be furnished on the fio
13、nt of the truck for towing purposes. 3.5 Radio interference suppression. The vehicle shall be suppressed to limit electromagnetic radiation in accordance with SAE J55 1. Any mounted equipment shall be suppressed to the same level. 3.6 Splash mar an average water flow rate of 8 Provided by IHSNot for
14、 ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50580 9779974 Olt74156 868 = Type I II A-A-505 80 Minimum Maximum 1,300 (4 921) 2,000 (7 570) 1,500 (5 678) 2,300 (8 706) not less than 200 gallons per minute (13 Us) with a vertical lift of 18 feet (5 486 mm); and an av
15、erage water flow rate of not less than 20 gallons (1.3 L/s) per minute with a vertical lift of 25 feet (7 620 mm). Evacuation of sewage from the tank shall be at an average flow rate of not less than 250 gallons per minute (16 Lis) when using compressed air fiom the discharge side of the vacuum pump
16、. All sewage inlet and outlet piping shall be capable of passing solids up to 2-inch (5 1 mm) sphere size. Float shutoff valves of the sewage tank shall be capable of closing the vacuum line, when under suction fiom the vacuum pump, without transmitting any liquid to the vacuum pump when either the
17、sewage tank or surge tank is Ned with water. The sewage tank valve and surge tank shall be capable of preventing sewage from entering the vacuum pump suction line when the truck is loading waste caustics and detergents, to within an allowable leakage tolerance of 1/50 of 1 percent of the sewage tank
18、 capacity collected into the tank. 3.23.2 Sewage tank. The sewage collection tank shall meet the capacities listed in table II. The sewage tank shail be the horizontal type, in accordance with ASME Boiler and Pressure Vessel Code, section Vm, for a design pressure of not less than 40 pounds per squa
19、re inch (276 kilopascals (Wa) and for full vacuum. ASME Boiler and Pressure Vessel Code, section Vm, certification shall be fimished by an authorized Boiler and Vessel Inspector. The tank shall be fabricated from not less than 0.25-inch (6 mm), high tensile, low alloy steel; or from mild steel or co
20、pper bearing steel of a thickness that produces equivalent strength, with welded smooth skin construction. The tank heads shall be substantially dished, flanged, and reinforced to provide structural strength of hydraulic pressure from either direction. The length of the tank shall be such as to give
21、 load distribution proportional to the rated capacity of the fiont and rear axles of the truck chassis. Outlet opening shall be at the rear bottom of the tank located to provide complete tank drainage. Full length longitudinal Z-type, box type, or V-type tank fiame members shall be furnished. TABLE
22、II. Tank capacity in dlons (litre). 3.23.3 Baflles. The tank shall be provided with baftles, the number of which shall be such that the linear distance between any two adjacent bafes, or between the tank head and the bafEle nearest to it, shall be not greater than 50 inches (1 270 mm). Baftles shall
23、 be reinforced and provided with half round openings at top and bottom. Each bafle shall be provided with an opening not less than 16 inches (406 mm) in diameter. The bafle area shall be not less than 80 percent of the cross-sectional area of the tank. 3.23.4 Access openings. An access opening shall
24、 be provided in the top of the tank to provide access to the tank float shutoff valve. In addition, a washout opening shall be provided on the top of the tank. Each opening shall be not less than 16 inches (406 mm) in diameter, or an oval with axis of not less than 12 inches by 16 inches (305 mm by
25、406 mm). Each opening shall be provided with a quick opening type cover equipped with a synthetic rubber gasket. Special tools shall not be required to open the cover. 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50580 9999774 01741.57 7T4 A
26、-A-50580 3.23.5 Sewage intake. Sewage intake shail be fiom rear top of the tank, or through rear bottom through a vertical standpipe, not less than 3-inch (76 mm) inside diameter (id), extending up within 18 inches (4 572 mm) of the tank top. The standpipe shall be provided with a bafne wear plate.
27、3.23.6 Tank sewage safety valve. A sewage tank safety valve shall be provided. The pressure relieving safety valve shall be of copper-alloy and shall be sized and installed in accordance with requirements of ASME Boiler and Pressure Vessel Code, section VIII. The safety valve shall have a relieving
28、capacity not less than the maximum output capacity of the vacuum pump. 3.23.7 Surge tank. A surge tank of not less than 1-gallon (4 L) capacity shall be furnished in the vacuum he between sewage tank and vacuum pump. Means shall be provided to drain and clean the surge tank. 3.23.8 Accessories and v
29、alves. Accessories and valves furnished with the sewage tank shall include not less than the following: a. A cleanout opening of not less than 75 square inches (40 887 square millimetre (mm2) size at the bottom rear end of the tank, provided with quick opening cover and synthetic rubber gasket. b. G
30、age(s) with less than 3-inch (76 mm) diameter dial(s) to indicate the partial vacuum attained when loading the tank, the air pressure during the time the tank is loaded with sewage, and when evacuating the tank. c. Mechanical liquid level indicator graduated in quarters of tank capacity. d. Quick op
31、ening inlet and outlet sewage gate valves of not less than 3-inch (76 mm) and 4-inch (102 mm) nominal Sie, respectively, fitted with cam-locking type hose couplers and furnished with blank dust caps for the couplers. AU valves and drain cocks shall be not less than commercial quaky of iron body valv
32、es with corrosion-resistant seats. Ail shutoff valve floats shall be type 3 16 stainless steel, copper, copper- doy, and not less than of 8 inches (203 mm) in diameter. 3.23.9 Sewage tank mounting. Sewage tank subftatne shall be secured with U-bolts, twin studs, or by brackets and the mounting shall
33、 include a hardwood breaker strip. 3.23.9.1 U-bolts or twin studs. When U-bolts or twin studs are used, there shall be not less than three U-bolts or twin studs, per side, each having not less than 0.5625-inch (14 mm) body diameter with not less than 0.625-inch (16 mm) thread diameter. Tie plates sh
34、all be not less than OS-inch (13 mm) thick. Truck chassis fiame shai be braced, using hardwood blocks at each mounting point unless mounting point is located at a fiill depth, he crossmember. Blocks shall incorporate a keeper strap or groove for mounting bolt, and shall be of sufcient width to ensur
35、e retention. Two shear bolts shd be provided, one each side of the rear portion of the body 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50580 9999974 OL4L58 630 A-A-505 80 subfiame, to maintain body alignment on the truck chassis. Forward
36、mounting bolts shall be located to the rear of the tapered portion of the breaker strips (see 3.23.9.3). 3.23.9.2 Brackets. When brackets are used, they shall be bolted to the web of the chassis frame rails. The mounting brackets shall provide means of drawing down the body subfi-ame on the chassis
37、rails and provisions shd be made to prevent lateral shifting of the breaker strips. When additional holes are required to secure mounting brackets to chassis fiame rails, they must be located within the area of the rail which is designated as being safe for drilling in accordance with the chassis ma
38、ndacturers body builders layouts. Attachments shall not interfere with nor obstruct existing chassis components. 3.23.9.3 Breaker strips. A hardwood breaker strip, not less than 1.0625-inch (27 mm) finished thickness, shall be installed between the sewage tank longitudinal sills and the truck chassi
39、s fiame. Breaker strips shall have a taper of 1-inch (25 mm) in 18 inches (457 mm) at the forward end. 3.23.10 Piping. Unless otherwise specified (see 7.21, all vacuum lines inside the tank shall be steel or iron pipe with corrosion-resistant fittings. The pipe and fittings shall be not less than 2-
40、inch (5 1 mm) standard iron pipe sizes (ips), and shall be made up of subassemblies and interconnected by boiler unions or similar quick disconnects. Vacuum line piping outside the tank shall be not less than 2-inch (5 1 mm) ips, of steel or hard copper pipe with matching fittings of iron or copper
41、alloy, respectively. Flexible hard rubber hose is acceptable. 3.23.1 1 Vacuum pump. The vacuum pump shall be water- or air-cooled, multicylinder, reciprocating piston pump or rotary type pump with automatic oilers, capable of performance required in 3.23.1 for both partial vacuum and compressed air
42、output, and shall be furnished complete with all necessary accessories. The vacuum pump suction and discharge openings shall be not less than of 2-inch (5 1 mm) id. The vacuum pump shall have a continuous duty pressure of 150 cfm (4 247 L/m) at 26 inches of mercury (88 Ba), and discharge pressure of
43、 not less than 35 lbs per square inch (241 Ha). Vacuum pump mounting shail be such as to prevent undue vibration. Ground clearance for the vacuum pump shall be not less than 12 inches (305 mm). A four-way valve, or four valves, shall be provided on the vacuum pump manifold in order to permit the tan
44、k supply he to be switched between the partial vacuum and the compressed air outlets of the vacuum pump, control(s) for the operator shall be located at the side or rear of the truck. Each or all valves sha be operated from a control lever capable of remaining in any position setting unafected by vi
45、bration. Exhaust air fiom the vacuum pump shall be piped to an outlet located on the opposite side of the truck fiom the truck engine tailpipe. 3.23.12 Hoses and hose carriers. Unless otherwise specified (see 7.2), eight 25-foot (7 620 mm) lengths of suction hose, and four 25-foot (7 620 mm) of disc
46、harge hose shall be furnished. Hose shall be smooth bore, rated at full vacuum and pressure of not less than 45 pound-force per square inch (psi) (3 10 Wa). Each section shall be fitted with male and female copper-alloy or aluminum couplings of the cam-lock type, rated for not less than 100 psi (689
47、 Wa). Troughs shall be provided for stowing the hose sections and shall be provided with suflicient drainage. Hose sections shall be attached to the troughs with hose clamps. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50580 m 9999974 0174
48、159 577 m A-A-50580 3.23.13 Storage compartments. The truck shall be equipped with an underslung compartment on each side of the sewage tank. Compartments shall have hinged doors with locks operable with the same key. 3.23.14 Walkway and access ladder. The truck shall be equipped with a waikway on t
49、he curbside of the sewage tank. The walkway shall extend the fidl length of the sewage tank and shall have a nonskid surface. The walkway shall provide an unobstructed surface. An access ladder with grab rails or grab handles, located on the curbside of the truck, shall be provided to gain access fiom the waikway to the sewage tank access openings. The ladder steps and grab handles shail be provided to gain access fiom ground level to the walkway. 3.23.15 Rear wh
