1、Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Richmond, ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616 or e-mailed to STDZNMGTdla.mil. Since contact information can change, you may want to verify the currency of this address
2、information using the ASSIST database at http:/assist.daps.dla.mil. AMSC N/A FSC 6850 INCH-POUND MIL-DTL-24577A 26 February 2007 SUPERSEDING DOD-D-24577 18 September 1978 DETAIL SPECIFICATION DISTILLER SCALE PREVENTIVE TREATMENT FORMULATIONS Reactivated after 26 February 2007 and may be used for new
3、 and existing designs and acquisitions. This specification is approved for use by all departments and agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers one type of general purpose distiller scale preventive treatment formulation. 2. APPLICABLE DOCUMENTS 2.1 General
4、. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness
5、of this list, document users are cautioned that they must meet all specified requirements of the documents cited in sections 3 and 4 of this specification, whether or not they are listed. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24577A
6、 2 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (
7、see 6.2). FEDERAL SPECIFICATIONS MIL-S-22698 - Steel Plate, Shapes and Bars, Weldable Ordinary Strength and Higher Strength: Structural. FEDERAL STANDARDS MIL-STD-1916 - DoD Preferred Methods for Acceptance of Product. (Copies of these documents are available online at http:/assist.daps.dla.mil or f
8、rom the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other government documents, drawings, and publications. The following other government documents, drawings, and publications form a part of this document to the extent specified herein.
9、Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). T9074-BD-GIB-010/0300 - Base Materials for Critical Applications: Requirements for Low Alloy Steel Plate, Forgings, Castings, Shapes, Bars, and Heads of HY-80/100/130 and HSLA-80/100.
10、 (Copies of these documents are available from Commander, Naval Sea Systems Command, Attn.: SEA 05M2, 1333 Isaac Hull Ave. SE, Stop 5160, Washington Navy Yard, DC 20376.) STANDARDIZATION DOCUMENT SD-6 - Provisions Governing Qualification. (Copies of these documents are available at http:/assist.daps
11、.dla.mil or from the Standardization Document Order Desk, 700 Robins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24577A 3 2.3 Non-government publications. The following documents form a p
12、art of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). ASTM INTERNATIONAL ASTM A 213/A 213M - Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater
13、, and Heat-Exchanger Tubes. ASTM A 240/A 240M - Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications. ASTM B 167 - Standard Specification for Nickel-Chromium-Iron Alloy (UNS N06600, N06601, N06603, N06690, N
14、06693, N06025, and N06045) and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Seamless Pipe and Tube. ASTM B 168 - Standard Specification for Nickel-Chromium-Iron Alloy (UNS N06600, N06601, N06603, N06690, N06693, N06025, and N06045) and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Pla
15、te, Sheet, and Strip. ASTM D 445 - Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity). ASTM D 1141 - Standard Practice for the Preparation of Substitute Ocean Water. ASTM D 1293 - Standard Test Methods for pH of Water. ASTM D 142
16、6 - Standard Test Methods for Ammonia Nitrogen in Water. ASTM D 1881 - Standard Test Method for Foaming Tendencies of Engine Coolants in Glassware. ASTM D 2688 - Standard Test Method for Corrosivity of Water in the Absence of Heat Transfer (Weight Loss Methods). ASTM G 1 - Standard Practice for Prep
17、aring, Cleaning, and Evaluating Corrosion Test Specimens. ASTM G 38 - Standard Practice for Making and Using C-Ring Stress-Corrosion Test Specimens. (Copies of these documents are available at http:/www.astm.org/ or from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA
18、 19428-2959.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24577A 4 WATER ENVIRONMENT FEDERATION - Standard Methods for the Examination of Water and Waste Water. (Copies of these documents are available online at http:/www.standardmethods.
19、org/ or from the Water Environment Federation, 601 Wythe Street, Alexandria, VA 22314-1994.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersede
20、s applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. The distiller scale preventive treatment formulation furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable q
21、ualified products list before contract award (see 4.2, 4.3, and 6.3). 3.2 Material. The distiller scale preventive treatment formulation shall be in aqueous medium and shall contain organic polyelectrolytes such as polyacrylates, and an anti-foam agent that shall conform to the requirements specifie
22、d herein. 3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements and promotes economically
23、advantageous life cycle costs. 3.2.2 Unit content. The unit content shall be at least 6.0 gallons (or metric equivalent) of liquid at 77 F (25 C) as specified in 4.4.2. 3.2.3 Maintenance of heat transfer coefficient. Using the recommended dosage of 10.5 0.2 milligram per liter (mg/L) the distiller s
24、cale preventive formulation in the feed water at the heat transfer coefficient shall be maintained at no less than 75 percent of the “clean tube value“ throughout the 80-hour test period when tested in accordance with 4.5.1. 3.2.4 Ease of scale removal. Scale formed on heat transfer surfaces, while
25、using the distiller scale preventive treatment formulation, shall be greater than 99.0 percent removed by one acid cleaning using the procedure given in 4.5.1.2. 3.2.5 Appearance. The distiller scale preventive treatment formulation shall be a clear liquid with no phase separation and shall form a h
26、omogeneous emulsion that is stable for 30 minutes when examined by the procedure given in 4.5.2. 3.2.6 Toxicity. The distiller scale preventive treatment formulation shall not contain toxic materials in concentrations that would constitute a health hazard. The formulation shall be safe to use for pr
27、oduction of potable water by distillation (see 4.5.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24577A 5 3.2.7 Corrosion. The distiller scale preventive treatment formulation shall not corrode 90-10 copper-nickel (Cu-Ni), a distiller h
28、eat transfer metal, at a rate greater than 2.54 X 10-2millimeters per year (mm/yr) (1 (mil/yr) when 90-10 Cu-Ni metal is immersed in a 100 milligram per liter (mg/L) concentration of distiller scale preventive treatment formulation in distiller water. The corrosion rate shall not be exceeded when te
29、sted in accordance with 4.5.4. 3.2.7.1 General corrosion. The distiller scale preventive treatment shall not corrode 90-10 Cu-Ni, 70-30 Cu-Ni, copper, valve bronze, phosphor bronze, gun metal or K-Monel at a rate greater than 0.10 mm/yr (4.0 mil/yr) when specimens of these metals are immersed in 100
30、 mg/L concentration of distiller scale preventive treatment formulation in distilled water and tested in accordance with 4.5.4.1. 3.2.7.2 High temperature corrosion. Corrosion rates in excess of 0.04 mm/yr (1.5 mil/yr) for carbon steel, HY-80 steel, type 347/348 corrosion resistant steel (CRES), or
31、Inconel Alloy 600; pitting in excess of 0.08 mm (3.0 mil) on alloy 600 and type 347/348 steel and stress corrosion cracking on stressed C-rings of Inconel Alloy 600 and 347 CRES shall not occur when tested in accordance with 4.5.4.2. 3.2.8 Compatibility with other treatment formulations. The distill
32、er scale preventive treatment formulation shall be compatible with formulations qualified under this specification. Compatibility is the absence of a precipitate when the distiller candidate treatment formulation is mixed in the concentration recommended for use in the distiller chemical addition ta
33、nk with each formulation. The testing procedure for the requirement is given in 4.5.5. 3.2.9 Homogeneity of an aqueous formulation solution. The distiller scale preventive treatment formulations shall form a stable homogeneous aqueous solution. A stable, homogeneous solution is one that does not for
34、m a phase separation after standing for 24 hours at 77 F 3.6 F (25 C 2 C) when tested in accordance with 4.5.6. 3.3 Chemical properties. 3.3.1 Ammonia content. The ammonia content of the scale preventive treatment shall not exceed 110 mg/L when analyzed in accordance with 4.6.1. 3.3.2 Hydrogen ion c
35、oncentration (pH). The pH value for qualification as measured at 77 F 1.8 F (25 C 1 C) shall be not less than 6.5 or not more than 10.5 when tested in accordance with 4.6.2. The pH of subsequent production lot samples shall vary not more than 0.8 pH unit from the value obtained for the qualification
36、 sample. 3.3.3 Iron content. The iron content of the scale preventive treatment shall not exceed 10 mg/L in accordance with 4.6.3. 3.3.4 Polyelectrolyte content. The scale preventive treatment shall contain at least 14.0 percent by weight of the polyelectrolyte chemical when tested in accordance wit
37、h 4.6.4. The polyelectrolyte concentration shall not vary more than 0.55 weight percent from the value obtained for qualification testing. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24577A 6 3.4 Physical properties. 3.4.1 Anti-foaming ac
38、tion. The distiller treatment formulation shall control foaming to prevent brine carry-over into the distillate. Anti-foaming action shall meet the test requirements of 4.7.1. 3.4.2 Specific gravity. The density of the liquid shall not vary more than 0.01 grams per milliliter (g/mL) from the value o
39、btained on qualification scale preventive treatment. Specific gravity test shall be in accordance with 4.7.2. 3.4.3 Intrinsic viscosity. The intrinsic viscosity shall be determined at 77 F 0.2 F (25.0 C 0.1 C) by the dilution method using a Cannon-Ubbelohde viscosimeter. The intrinsic viscosity shal
40、l be in accordance with 4.7.3. The intrinsic viscosity of subsequent lots shall not vary more than 0.004 liter per gram (L/g) from the value obtained when the distiller scale preventive treatment is determined for the qualification sample. 4. VERIFICATION 4.1 Classification of inspections. The inspe
41、ction of the distiller scale preventive treatment formulation shall be classified as follows: a. Qualification inspection (see 4.2). b. Conformance inspection (see 4.4). 4.2 Qualification inspection. Qualification inspection shall consist of the examinations and tests shown in table I. 4.2.1 Sample
42、for qualification inspection. One filled 6.0 gallon (or metric equivalent) container is required for the qualification tests specified in table I. TABLE I. Categories of inspection. Title Qualification Quality conformance Requirement paragraph Inspection paragraph Examination of filled containers X
43、X 3.2.2 4.4.2 Maintenance of heat transfer coefficient X 3.2.3 4.5.1 and 4.5.1.1 Ease of scale removal X 3.2.4 4.5.1.2 Appearance X X 3.2.5 4.5.2 Toxicity X 3.2.6 4.5.3 Corrosion X 3.2.7, 3.2.7.1 and 3.2.7.2 4.5.4, 4.5.4.1 and 4.5.4.2 Compatibility with other treatment formulations X 3.2.8 4.5.5 Pro
44、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24577A 7 TABLE I. Categories of inspection - Continued. Title Qualification Quality conformance Requirement paragraph Inspection paragraph Ammonia content X X 3.3.1 4.6.1 Hydrogen ion concentration
45、 (pH) X X 3.3.2 4.6.2 Iron content X X 3.3.3 4.6.3 Polyelectrolyte content X X 3.3.4 4.6.4 Anti-foaming action X X 3.4.1 4.7.1 Specific gravity X X 3.4.2 4.7.2 Intrinsic viscosity X X 3.4.3 4.7.3 4.3 Maintenance of qualification. At specified intervals determined by the qualifying activity, the manu
46、facturer must be able to demonstrate that the company still has the capabilities and facilities necessary to produce the QPL items in accordance with this specification and the provisions governing qualification specified in SD-6. 4.4 Conformance inspection. Conformance inspection shall consist of t
47、he applicable examinations and tests of table I. 4.4.1 Sampling for conformance inspection. 4.4.1.1 Inspection lot. For purposes of sampling, a lot shall consist of all material manufactured as one batch and transferred from one mixing tank to the shipping container. 4.4.1.2 Sampling for examination
48、 of filled containers. A random sample of filled containers shall be selected in accordance with MIL-STD-1916 at verification level I. Verify compliance with all requirements regarding fill, closure, marking, and other requirements not requiring tests as specified in 4.4.2. 4.4.1.3 Sampling for test
49、s. Three one-liter containers shall be filled with the distiller scale preventive formulation that shall be withdrawn from an agitated mixing tank prior to packing each lot. The samples shall be contained in plastic bottles such as polyethylene or other plastic containers that do not react with the chemicals of the distiller scale preventive treatment. The three equal portions of each s
