1、0-D-1407 SUPERSEDING MIL-F-22287A(Wep) 23 November 1962 August 9, 1972 FEDERAL SPECIFICATION DRY CHEMICAL, FIRE .EXTINGUISHING, POTASSIUM BICARBONATE This specification was approved by the Commissioner, Federal Supply Service, General Services Administration, for use of all Federal agencies . 1. SCO
2、PE 1.1 Scope. This specification covers one type of dry chemical powder composed largely of pure potassium bicarbonate suitable for fire extinguishers used in conjunc.tion with mechanical foam (see 6.3). 2. APPLICABLE DOCUMENTS 2.1 The following documents,of the issue in effect on date of invitation
3、 for bids or request for proposa1,form a part of this specification to the extent specified herein: Federal Specifications : L-P-378 - Plastic Sheet and Strip, Thin Gauge, Polyolefin. 0-F-555 - Foam-Forming Liquids, Concentrated, Fire Extinguishing, RR-S-366 - Sieves, Standard For Testing Purposes.
4、PPP-D-705 PPP-D-729 - Drums, Metal, 55 Gallons (For Shipment of Noncorrosive Material). PPP-P-704 - Pails, Shipping Steel (1 Through 12 Gallons). Mechanical. - Drum, Metal Shipping, Steel (Over 12 and Under 55 Gallons). Federal Standard : Fed. Std. No. 123 - Marking for Domestic Shipment (Civil Agen
5、cies). (Activities outside the Federal Government may obtain copies of Federal specifications, Standards, and Handbooks as outlined under General Information in the Index of Federal Specifications, and Standards, at the prices indicated in the Index. issued, is for sale on a subscription basis by th
6、e Superintendent of Documents, U. S. Gokernment Printing Office, Washington, D.C. 20402. The Index, which includes cumulative monthly supplements as FSC 4210 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-0-D-1407 Y2 W 9999974 001bY30 O M (Single co
7、pies of this specification and other Federal specifications required I by activities outside the Federal Government for bidding purposes are available without charge from Business Service Centers at the General Services Adminis- tration Regional Offices in Boston, New York, Washington, D.C., Atlanta
8、, Chicago, Kansas City, Mo., Fort Worth, Denver, San Francisco, Los Angeles, and Seattle, Uashington b Standards, and Handbooks, and the Iidex of Fedkal Specificat ions and Standards, from established distribution points in their agencies.) Military Standards : MIL-STD-105 - Sampling Procedures and
9、Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-147 - Palletized Unit Loads for Palletized and Containerized Unit Loads 40“ X 48“ Pallets Skids, Runners, or Pallet-Type Bas e b (Copies of Military Specifications and Standards required by contractors in co
10、nnection with specific procurement functions shoiild be obtained from the azocurine: activitv or as directed bv the contracting officer:.) I the issue in effect on date of invitation for bids or request for proposal shall 9 I D-5 - Method Test for Penetration of Bituminous Materials, (Application fo
11、r copies of publications should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103 a ) Container Corporation of America Color Harmony Manual (Application for copies of the Color Harmony Manual should be addressed to Container Corporatio
12、n of America, Department of Color Standards, 38 S. Dearborn Street, Chicago 60603 .) I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-0-D-1407 42 7777774 001b43L 2 O-D-1407 Munsell Color Company Munsell Book of Color. (Application for copies of the
13、Munsell Book of Color should be addressed to Munsell Color Company, 10 East Franklin Street, Baltimore, Maryland 21202.) National Fire Protection Association NFPA Pamphlet No. 11 - “Standards for Foam Extinguishing Systems“. (Application for copies of Pamphlet No. 11, “Standards for Foam Extinguishi
14、ng Systems,“ should be addressed to National Fire Protection Association, 60 Batterymarch Street, Boston, Mass.-O2iO.) Precision Scientific Company Bulletin No. 4360 PSCO-4-52 - “Precision“ - Blaine Air Permeability Fineness Tester. (Application for copies of bulletin No. 4360 PSCO-4-52 should be ad
15、dressed to Precision Scientific Company, 3737 W. Cartland Street, Chicago, Ill. 60647.) National Motor Freight Traffic Association, Inc. Agent National Motor Freight Classification (Application for copies should be addressed to the National Motor Freight Traffic Association, Inc. Agent, 1616 P Stree
16、t, N.W., Washington,. D.C. 20036.) Uniform Classification Committee, Agent Uniform Freight Classification (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 S. Riverside Plaza, Chicago, Illinois 60606.) 3. RBQUIREMENTS 3.1 Chemical and physical requir
17、ements. The dry chemical powder shall con- form to the requirements of table I. Materiais may be added to improve the fluidity, foam compatibility., appearance, and noncaking characteristics of the finished powder. and shall not give off toxic vapors when subjected to intense heat. These additives s
18、hall not be sodium compounds of any type 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-D-1407 42 = 9777774 0036432 4 O-D- 14 07 3.1t2 Particle size. The particle size distribution of the dry chemical powder, tested in accordance with 4.3.12, shal
19、l be within the iimits specified in table 11. TABLE It Chemical and physical requirements Test Requirement Value Paragraph Potassium bicarbonate (KHC3) content, percent by wesght, Moisture content, percent by weight, maximum 0.2 4.3.2 minimum 92.0 4a3.1 Hygroscopicity, percent gain in weight, maximu
20、m Apparent: density, grams per milliliter, minimum Caking and lumping tendency, minimum penetration Packed density, grams per milliliter, minimum Packed powder discharge, percent by weight, minimum Foam compatibility, average drainage rate, ml /minute, Specific surface area, square centimeters per g
21、ram maximum Color identification 3 to 0.88 15 m. or 150 units 1.12 88.0 2 t5 4200- 5200 purple 4 a3 e3 4.3.4 4.3t5 4.3.6 4.3.7 4.3.8 4.3.9 4.3.1 TABLE II. Particle size Ut St screen size Percent retained Minimum Maximum 40 LOO 200 3 25 Bottom pan I 0.0 - 2.5 8.0 12.0 20.0 74aO 88tO I 4t QUALITY ASSU
22、RANCE PROVISIONS 4.3. Responsibility for inspection. Unless othwise specified in the con- tract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract: or order, the supplier may use his own
23、 or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. perform any OE the inspections set forth in the specification where such in- spections are deemed necessary to assure supplies and services conform to prescrib
24、ed requirements. The Government reserves the right to 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-O-D-1407 42 m 7777774 0016433 b U O-D- 1407 4.2 Quality. conformance inspection. Quality conformance inspection shall consist of the examination o
25、f filled containers (4.2.2) and lot acceptance tests (4.2.3). 4.2.1. Sampling. 4.2.1.1 Inspection lot. An inspection lot shall consist of five batches or less when this fulfills the requirements of an order. When more than five batches are required to fill an order, the batches shall be grouped as e
26、qually as possible by.weight to give not less than three nor more than five lots. 4.2.1.2 Lot acceptance test samples. Samples from a lot comprised of five batches or less shall consist of a two (2) pound composite batch sample and shall immediately be placed in a clean, dry, air and watertight cont
27、ainer which shall be sealed, marked, and sent to a testing laboratory satisfactory to the procuring agency concerned. The sample shall be subjected to all the tests, as specified in 4.3. men more than five batches are required to fulfillan order, the batches shall be grouped as equally as possible b
28、y weight to give not less than three nor more than five lots. A su.fficient quantity shall be taken from each batch to make a ten-pound composite lot sample when the lot consists of more than five batches. Each lot composite sample shall be pre- pared for testing as above. 4.2.2 Examination of fille
29、d containers. random sample of filled containers shall be selected from each lot in accordance with MIL-STD-105 at inspection level I, and acceptable quality level (AQL) equal to 2.5 percent defective to verify compliance with all stipulations of this specification regarding fill, closure, packaging
30、, packing, marking, and other requirements not involving tests. Containers shall be examined for defects of the container and the closure, for evidence of leakage, and for unsatisfactory markings; each sample filled con- tainer shall also be,weighed to determine the amount of the contents. Any conta
31、iner in the sample having one or more defects or under required fill shall be rejected, and if the number of defective containers in any sample exceeds the acceptance number for the appropriate sampling plan of MIL-STD-105, the lot represented by the sample shall be rejected. Lot acceptance test sam
32、ples selected in accord- ance with 4:2.1.2 shall be tested for conformance with all the section 3 require- ments. if the-acceptance test sample fails to pass one or more of these tests, the lot represented shall be rejected. 4.2.3 Lot acceptance tests. 4.3 Test methods. Each test shall be run in tri
33、plicate and the results averaged. .4.31 Composition. Standard, officially recognized, analytical procedures, either of.the direct or subtractive type, for the analysis of potassium bicarbonate may be used and the results reported in terms of KHCO3, percentage by weight. 5 Provided by IHSNot for Resa
34、leNo reproduction or networking permitted without license from IHS-,-,-O-Dm 14 07 4.3,2 Moisture content. In an atmosphere of 50 percent relative humidity or less, weigh accurately a sample of approximately 50 grams (C 1 mg,) in a tared aluminum dish approximately 68 mm. diameter by 18 nun. Place th
35、e dish in a desiccator using HzSa, A,C,S, reagent grade, 95 percent to 98 percent by weight, us a drying agent. temperature of 70 F. (i: 5) for 24 hours. the test samples and weigh accurately. calculated as follows: Maintain the closed desiccator and contents at a At the end of this period remove Th
36、e moisture content of the sample is 100 (W1 - W2) mere: M= moisture content, Wl percent ti= FI1= original weight W2= weight of sample of sample after 24 hours drying 4.3,3 Hygroscopicity, Using an aluminum moisture dish of approximately 68 nnn, diameter by 18 mm. height as a sample container, overfi
37、ll with the material and thon strike off with a straight edge. weigh accurately. Remove the cover and place the sample in a humidifier with circulating air (as described in 4.3,5) maintained at 78 percent R.H. and 70 f 5 F. for a period of 48 hoursr and weigh it, Determine the gain in weight and cal
38、culate the percentage gain in weight of the sample, Cap the dish with its cover and At the end of this period, cover the sample 4.3.4 Apparent density. Place 100 grams ( this consists of doubling the depth of the bed in order to increase the time interval ?or better reproducibility of results. plung
39、er to give an effective bed depth of 2.93 centimeters inct-ead of the original 1.47 centimeters. necessary to make successive additions of 1 gram each, lightly tapping or vibrating after each addition. The cell shall be filled so that the plunger can be depressed to the collar when a pressure of 10
40、pounds is applied for a period of 3 minutes. It will be necessary to machine down the bakelite Also, to insure duplicate filling of the cell it is The density of the powder should be determined by using a 50 ml. pycnometer with n-heptane as the liquid. Carmans equation relating specific surface to p
41、ermeability should be used for all calculations. in the pamphlet that accompanies the apparatus. 4.3.10 Color identification. The powder sample, viewed in bulk in its con- tainer, shall be compared in hue and chroma to Munsell 5.018/2 or to the Color Harmony Manual Chip 12. ca. and shall be reported
42、 as passing or failing. This equation is included shall operate with a single eccentric circular motion at 285 (+ 10) revolutions per minute and with a tapping action of 150 strokes per.minute to obtain dependable sieve analyses. To permit flexible operations, the shaker shall accommodate one to six
43、 8-inch diameter sieves.with one pan and cover. sizes used for particle size analysis shall conform to U. S. Standard Screen. Sizes as outlined in RR-S-366 and shall be stainless steel, and non-supported, Screen In an atmosphere of 50 percent R.H. or less, place an accurately weighed sample of appro
44、ximately 50 grams in the top screen of a nested series of 8-inch U. S. Standard screens consisting of a 40-mesh, 100-mesh, 200-mesh, 325- mesh, with cover and bottom pan. Agitate the screen nest for 5 minutes on a Tyler Ro-Tap machine. remaining on each screen, expressing the results in percentage o
45、f the original sample. Sieves should be cleaned with a camel hair brush to insure complete removal of Separate the screen nest and weigh accurately the amount NOTE: Care must be taken to remove all the residue from the screen. Provided by IHSNot for ResaleNo reproduction or networking permitted with
46、out license from IHS-,-,-0-D-lY07 YE! W 9999974 00Lb438 5 W O-D- 1407 4.4 Inspection of preparation for delivery. The marking and preparation for delivery requirements of the dry chemical shall be inspected to determine conformance with the applicable requirements of section 5 of this specification.
47、 5, PWPARATXON FOR DELIVERY 5.1 Packing, Packing shall be level. A or C, as specified (see 6.2). 5,1#1 Level A. The material shall be furnished in the following type con- tainers . 5.1,l.l Pails. Unless otherwise specified, the material shall be packed in a single bead, 6-gallon pail with wire ball,
48、 handle, and grip conforming to PPP-P-WF, type 11, class 2, except that a 26-gage cover with a lever-lock, reusable type ring shall be used in lieu of the lug cover. The lever-lock ring and cover shall be fitted with a suitable type rubber sealing gasket. The containers shall be provided with a poly
49、ethylene liner conforming to L-P-378. inches, vent entry of moisture. The thickness of the polyethylene film shall be not less than 0.0040 The open end of the liner shall be sealed in a manner that will pre- 5.1,1,2 Drums, Containers larger than 6-gallon capacity shall conform to PPPmD-705 or PPP-D-729, as applicable. removable head and a polyethylene liner conforming to L-P-378. of the polyethylene film shall be not Less than 0.0040 inch. the liner
