1、MIL-E-24652 q2 777770b 0232773 b r- FEDERAL PPP-B-601 - Boxes Wood Cleated Plywood I PPP-B-621 - Box, Wood, Nailed and Lock-Corner. PPP-B-636 - Boxes, Shipping, Fiberboard. PPP-B-640 - Boxes, Fiberboard, Corrugated, Triple-Wall. S-13-SQ MIL-E-=24652(SH) 28 May 1985 MILITARY SPECIFICATION EXTINGUISHE
2、R, FIRE, AQUEOUS FILM FORMING FOAM, (AFFF), 2-1/2 GALLON This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense, 1, SCOPE 1.1 Scope. This specification covers the requireme
3、nts for a 2-1/2 galLon fire extinguisher of the stored-pressure type. It is capable of generating a %ow expansion foam using AFFP concentrate and fresh water. 2 APPLICABLE DOCUMENTS 2,l Government documents;. I_ 2.1.1 Specifications and standards. Unless otherwise specified, the fol- lowing specific
4、ations and standards of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DODISC) specified in the solicitation form a part of this specification to the extent specified here in e SPECIFICATIONS MILITARY MIL-P-116 - Preservation, Methods of. MIL-S-901
5、 - Shock Tests H.I. (High Impact) Shipboard Machinery, Eluipment, and Systems Requirements for. MIL-L-10547 - Liner, Case, and Sheet, Overwrap, Water Vapor- proof or Waterproof, Flexible. MIL-F-24385 - Fire Extinguishing Agent, Aqueous Film Forming Foam (AFFF) Liquid Concentrate for Fresh and Sea Wa
6、ter. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be-addressed to: Commander, Naval Sea Systems Cumand, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization
7、Document Improvement Proposal (DD Form 1426) appearing ab the end of this document. or by letter. FCC 4210 / THIS DOCUMENT CONTAINS /% PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-29652 92 m 7797706 0232779 STANDARDS FEDERAL FED-STD-H2
8、8 - Screw Thread Standards for Federal Services. FED-STD-H28/2 - Unified Thread Form and Thread Series for BGlts, Screws, Nuts, Tapped Holes and General Applica- t ion. M IL IT ARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-
9、167-1 - Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited) . Attributes. 2.2.2 - Other Government publications. - The following Government publication forms a part of this specification to the extent specified herein. PUBLICATION DEPARTMENT OF TRAN
10、SPORTATION Code of Federal Regulations, Title 49 Part 17 3.306 ( c (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, DC 20402.) (Copies of specifications, standards, and publications required by con- tractors in connection with sp
11、ecific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this speci- fication to the extent specified herein. The issues of the documents which are indicated as DoD adopted
12、 shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. UNDERWKITERS LABORATORIES, INC. (UL) Standard Number 8 - Foam Fire Extinguisher. (Application for copies should be addressed to the Underwriters Laboratories, Inc., 207 East Ohio Street, Chicago, IL 60611.) U
13、NIFORM CLASSIFICATION COMMITTEE AGENT Uniform Freight Classification Ratings, Rules, and Regulations. (Application for copies should be addressed to the Uniform Classification Committee Agent, Tariff Publication Officer, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.) 2 Provided by IHSNot
14、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-2LIh52 LI2 m 77777Oh 0232775 T m a . c a NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) Pamphlet 11 - Standard for Low Expansion Foam and Combined Agent Sys tems . (Application for copies should be addressed to the Nat
15、ional Fire Protection Association, Battery March Park, Quincy, MA 02269.) (Industry association specifications and standards are generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies. ) 2.3 Order of precedence. - In the event of
16、 a conflict between the text of this specification and the references cited herein, the text of this specifica- tion shall take precedence. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2.1), a sample shall be sub- jected to first article inspection (see 4.2 and 6.3). 3.2 Materials. 3.2.1
17、 Finish. The shell shall be finished with a red enamel protective coating for identification and enhanced corrosion resistance. 3.2.2 Threads. Threads shall be in accordance with FEU-STD-H28 and FED-STD-H28/2. 3.2.3 Recovered materi-. Unless otherwise specified herein, all equip- ment, materials, an
18、d articles incorporated in the products covered by this speci- fication shall be new and shall be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have been colle
19、cted or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified. 3.3 Fire ex
20、tinguishing agent. The fire extinguishing agent tested for listing by Underwriters Laboratories shall be a solution of liquid AFFF con- centrate and fresh water. The fire extinguisher shall be compatible with the use of AFFF in accordance with MIL-F-24385. 3.4 Weight. The weight of the empty charged
21、 extinguisher, excluding the mounting bracket, shall not exceed 10 pounds. 3.5 Overall dimensions-. The extinguisher and bracket shall be as small as possible consistent with good design and performance. height shall be not greater than 25 inches. The extinguisher 3 Provided by IHSNot for ResaleNo r
22、eproduction or networking permitted without license from IHS-,-,- MIL-E-24652 42 W 777970b 023277b L i 3.6 Design and construction, 3.6.1 Extinguisher. The extinguisher shall be a stored-pressure type - with a rated capacity of 2.5 gallons of AFFF solution and a service pressure of 100 pounds per sq
23、uare inch (lb/in2), rechargeable without the use of special tools or special equipment. tools are defined as those not listed in the Federal Supply catalog, copies of which may be consulted in the office of the Defense Contract Administration Service.) end of the discharge hose. The extinguisher sha
24、ll be listed by Underwriters Laboratories Inc., (UL) in accordance with UL Standard No. 8, and shall have a minimum fire extinguishing rating of 3-A:20-B. The extinguisher shall be easily (Special The flow shall be controlled by a shut off valve at the extinguisher 3.6.2 Extinguisher components. The
25、 extinguisher shall contain the fol- lowing major components : (a) Discharge valve assembly. (b) (c) Shell. (d) Siphon tube assembly. (e) Antioverfill tube. (f) Charging kit. Discharge hose and nozzle assembly. 3,6.2.1 I-_ Discharge valve assembly. The discharge valve assembly shall consist of a dis
26、charge valve, air valve assembly, pull pin and retainer chain, and pressure gauge. 3,6.2.1.1 Discharge valve. A self-closing discharge valve shall be - located on the top of the extinguisher. The valve body and operating parts (levers, handle, valve stem, plunger pin, springs, bushings, and SO forth
27、) shall be made of nonferrous metal, or austenitic stainless steel. 3.6.2.1.1.1 - Gaskets and O-rings. A gasket or O-ring shall be retained in a recess or the equivalent, in the valve or collar, to provide a leak-tight seal. A gasket or O-ring shall be provided at the valve and hose connection to pr
28、ovide a leak-tight joint. O-rings or gaskets shall be used to prevent leaking of the poppet valve at the seat and along the shaft. 3.6.2.1.1.2 Threads. The discharge valve connection to the shell shall have 1.5-16 UN-2B (internal) threads. The discharge valve connection to the discharge hose shall h
29、ave 0,625-18 UNF-2B (internal) threads, 3.6.2.1.2 Air valve assembly. A Schraeder type (or equivalent) air valve assembly and cap shall be provided as an integral part of the discharge valve assembly for pressurizing the extinguisher. Pressure charging through the discharge hose is not acceptable. 3
30、.6.2.1.3 Pull-pin and retainer chain. A pull-pin shall be provided to prevent inadvertent operation. The pin shall pass through the valve operating lever in such a way that the valve will not operate with the pin in place, The pin shall be held captive to the extinguisher by a short retainer chain (
31、or 4 1 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-24b52 42 = 7fi%Oh 0232777 3 I- , equivalent), so that it will not be lost during operation of the unit. A visual mechanical tamper seal shall be used to hold the pull-pin in the safe posi
32、tion. Use of or tampering with the extinguisher will break the seal. seal is to be field-replaceable and shall be provided as a part of the recharge kit (see 3.6.2.6). The 3.6.2.1.4 Gauge. A pressure gauge shall be provided as an integral part of the discharge valve. The gau e face shall indicate th
33、e pressure in units of lb/in2 or a combination of lb/in9 and additional units, such as kilopascals (kPa). The minimum indicated gauge pressure shall be zero lb/in2. The maximum indicated gauge pressure shall be not less than 150 lb/in2 and not greater than 250 lb/in2. The diameter of the gauge shall
34、 be not less than 1.5 inches. 3.6.2.2 Discharge hose and nozzle assembly. The extinguisher shall have a flexible discharge hose with a permanently affixed nozzle. The inlet side of the discharge hose shall contain a fitting with 0.625-18 UNF-2A (external) threads, for attachment to the discharge val
35、ve. The nozzle shall be of the air-aspirating type and shall aerate the extinguishing agent to achieve the expansion ratio specified in 3.7.1. 3.6.2.3 Shell. The shell (body) of the extinguisher shall be of sufficient volume to hold 2.5 gallons f the extinguishing agent plus enough compressed air to
36、 propel the agent at velocities sufficient to aerate the agent and produce the discharge characteristics specified in 3.7.1. The shell outside diameter shall be seven inches (plus or minus 0.125 inches). The design service pressure shall be not less than 100 lb/in2. 3.6.2.3.1 Material. The shell sha
37、ll be fabricated of austenitic stainless steel, American Iron and Steel Institute (AISI) type 304L. 3.6.2.3.2 Joints. Joints shall be butt welded. Repair welds are not - accept able. 3.6.2.3.3 Fill opening. The collar or fill opening of the shell shall have 1.5-16 UN-2A (external) threads. 3.6.2.3.4
38、 Footstand. If the shell has a domed end at the base, a foot- stand shall be permanently affixed to the shell to enable the extinguisher to stand upright. 3.6.2.4 Siphon tube and strainer assembly. A siphon tube with strainer shall be attached to the discharge valve and shall carry agent from the bo
39、ttom of the shell to the discharge valve. 3.6.2.5 Antioverfill tube.- An antioverfill tube shall be provided. It shall be capable of ensuring adequate air space above the liquid in the extin- guisher so that the propellent air will expel1 the liquid at sufficient pres- sure to empty the extinguisher
40、 and discharge foam with the desired character- istics (see 3.7.1) throughout the duration of extinguisher operation. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-2qb52 92 U 77777Ob O232778 5 - 3.6.2.6 Charging kit. Extinguishers shipped u
41、ncharged shall contain the following items packed as a charging kit: (a) Complete instructions for charging. (b) Premeasured container containing 1 charge of AFFF concentrate. (c) Tamper seal. (d) (e) Extinguisher inspection record tag with suitable attachment. Cover cap for Schraeder valve (or equa
42、l). 3.6.3 Mounting bracket. A mounting bracket shall be provided to hold the extinguisher in a vertical orientation and shall be capable of floor and wall mounting. It shall have a bottom plate which extends beyond the base of the extinguisher. 3.7 Performance requirements. The fire extinguisher sha
43、ll exhibit the performance requirements specified herein during the inspection of 4.5 and 4.6. 3.7.1 Discharge characteristics. The effective discharge time of the extinguisher shall be 45 to 65 seconds when tested as specified in 4.6.2.1. The foam shall have a minimum expansion ratio of 6.5:l and a
44、 minimum quarter drainage time of 90 seconds when tested as specified in 4.6.2.2. 3.7.2 Fire extinguishment. 3.7.2.1 L rating. The extinguisher shall have a fire extinguishing capability so as to obtain a 3A:20B fire extinguishing rating from UL and shall be so labeled. 3.7.2.2 Fire extinguishing. T
45、he extinguisher shall extinguish the fire when tested as specified in 4.6.4. 3.7.2.2.1 Equivalency. The requirement of 3.7.2.2 shall be considered to have been met if the foam tested by UL to obtain the fire extinguishing rating (see 3.7.2.1) is qualified under MIL-F-24385. 3.7.3 Repeated operation
46、of the valve. When tested as specified in 4.6.3.1, repeated operation of the valve shall not cause undue wear or adversely affect the operation of the extinguisher. 3.7.4 Repeated operation of the extinguisher bracket. The mounting bracket shall be operable after the tests specified in 4.6.3.2 and 4
47、.6.5.1. 3.7.5 High-impact and shock resistance. The extinguisher and mounting bracket shall meet the high-impact shock tests specified in 4.6.5.1. 3.7.6 Vibration resistance. The extinguisher and mounting bracket shall be operable after being subjected to the vibratioqal conditions specified in 4.6.
48、5.2. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L MIL-E-2qbSZ q2 = 9977706 0232797 7 MIL-E-24652(SH) I. Test Visual examination Discharge duration Foam quality Discharge valve operation Mounting bracket operation Shock Vibration b Requirement
49、paragraph 3.2.1 - 3.6.3 3.7.1 3.7.1 3.7.3 3.7.4 3.7.5 3.7.6 3.8 Identification. 38.1 Nameplate. A nameplate and other extinguisher marking shall be provided as specified in UL Standard No. 8. 3.8.2 Military label plate. A label plate shall be securely attached to the body of each extinguisher on the rear side (opposite to the nameplate). label shall be an aluminum foil type with pressure sensitive adhesive backing. The label plate
