1、LJ-26- 61 DOD-K-24674 bb m 7797706 0333337 T I I METRIC I DOD-K-Z4674(SH) 21 August 1986 MILITARY SPECIFICATION KIT, DISSOLVED OXYGEN (METHOD C), NAVAL SHIPBOARD (METRIC) This specification is approved for use within the Naval Sea Systems Command, Department of the Navy, and is available for use by
2、all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a water testing outfit using an organic dye for the determination of dissolved oxygen in feedwater. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The follo
3、wing specifications and standards form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited i
4、n the solicitation. SPECIFICATIONS FEDERAL PPP-B-566 - Boxes, Folding, Paperboard. PPP-B-636 - Boxes, Shipping, Fiberboard. PPP-B-640 - Boxes, Fiberboard, Corrugated, Triple-Wall. PPP-B-665 - Boxes, Paperboard, Metal Edged and Components. PPP-B-676 - Boxes, Setup. MI LITARY MIL-P-116 - Preservation,
5、 Methods of. 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 Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standar
6、dization.Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. 4MSC N/A FSC 6630 IISTRIBUTION STATEMENT A Approved for public release; distribution unlimited Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-S
7、TANDARDS WILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Narking for Shipment and Storage. Attributes. (Copies of specifications and standards required by contractors in connection with specific acquisition functions should be obtained from the contracting activ
8、ity or as directed by the contracting activity.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents which are noD adopted shall be those listed in the issue of the DoDISS specified
9、in the solicitation. the issues of documents not listed in the DoDISS shall be the issue of the nongovernment documents which is current on the date of the solicitation. Unless otherwise specified, AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 1133 - Standard Specification for Reagent Water. (
10、DoD adopted) D 3951 - Standard Practice for Commercial Packaging. (DoD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Nongovernment standards and other publications are normally available from the or
11、ganizations which prepare or which distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of :;.s specification and the references cited herein (except for associat
12、ed ciezail Specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Definition. The method C
13、dissolved oxygen test kit measures the mount of dissolved oxygen present in deaerated feedwater at the parts per billion (p/b) level. The kit consists of sampling equipment, clamp, glass sampler, rubber tubing, snapper, test eqiiipment, evacuated ampoules containing test chemicals, and a standard co
14、lor comparator. 3.2 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.2.1 and 6.3). 2 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-K-24b74 66 m 7779706 OL33L4l m 3
15、.3 Characteristics. 3.3.1 Performance. the amount of dissolved oxygen in deaerated feedwater having a temperature of 21 to 38 degrees Celsius (OC) (70 to 100 degrees Fahrenheit (OF) between O The method C dissolved oxygen test kit shall measure and 40 p/b. oxygen level when the actual oxygen value i
16、s less than 15 p/b and within plus or minus 5 p/b when the actual oxygen value is between 15 and 40 p/b. actual oxygen value is greater than 40 p/b the test shall indicate a value of greater than 40 p/b. Feedwater contaminents or treatment chemicals, chlorides and hardness or phosphates, morpoline,
17、EDTA and hydrazine, shall not interfere with the measurement of dissolved oxygen. The test results obtained shall be plus or minus 2.5 p/b of the When the 3.3.2 Physical characteristics. 3.3.2.1 Component parts. The method C dissolved oxygen test kit shall con- sist of the following: One colorimetri
18、c comparator with eight liquid color standards representing O, 5, 10, 15, 20, 25, 30 and 40 p/b dissolved oxygen, respectively One box of 30 ampoules One snapper tool One glass sampler One finger cot One utility clamp One chain type clamp One piece of 4.8 millimeters (mm) (3/16-nch) inside diameter
19、(id) One set of operating instructions One storage case neoprene tubing, 914.4 mm (3-foot) length 3.3.2.1.1 Colorimetric comparator. Details and dimensions of the color com- parator used for making the dissolved oxygen determinations shall be as shown on figure 1. The comparator shall consist of a t
20、ransparent tube in which eight liquid-filled glass vial color standards are mounted and enclosed. be a center space into which the test ampoule can be inserted for color compari- son. The comparator shall have the color standards representing O, 5, 10, 15, 20, 25, 30 and 40 p/b dissolved oxygen. The
21、se color standards shall range in color from clear to pink to reddish-pink. There shall 3.3.2.1.2 Test ampoules. Details and dimensions of the test ampoules used They in determining the dissolved oxygen content shall be as shown on figure 2. shall be made of glass, flat at one end and drawn to a tap
22、ered hermetically sealed closure at the other end. breaks easily and evenly when placed in the snapper tool and broken. A color- forming reagent shall be contained in each ampoule. This color-forming reagent shall be clear to pale yellow in color with no sediment present. The ampoules shall contain
23、a vacuum so they will self fill when the tips are broken after they have been placed in the sample to be tested. When filled, the ampoules shall contain the sample and reagent. A small inert gas bubble shall be present in the broken ampoule so that the mixing of the sample and reagent will be facili
24、- tated. The ampoules shall be packaged 30 to a box. The details and dimensions The tapered end shall be scored so that it 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-of the box of ampoules shall be as shown on figures 2 and 3. shall meet the r
25、equirements specified in 4.5.2. When tested, they 3,3.2.1.3 Snapper tool. Details and dimensions of the plastic snapper The snapper shall easily and evenly break the scored tip tool used in breaking the tip of the glass measuring ampoules shall be as shown on figure 4. of the measuring ampoule while
26、 it is submerged in the sample to be tested. The breaking surface shall not become excessively scored as to prevent the breaking of a box of 30 ampoules. 3.3.2.1.4 ;lass sampler. Details and dimensions of the glass sampler shall be as shown on figure 5. tool as a flow of water passes upward through
27、it. shall accommodate a piece of 4.8 mm (3/16 inch) id tubing. The sampler shall easily contain the snapper The tip of the sampler 3.3.2.1.5 Finger cot. The finger cot shall be made from thin rubber, medium size. It shall be used for an entire box of 30 ampoules. 3.3.2.1.6 Utility clamE. The utility
28、 clamp shall be as shown on figure 6. It shall be made of corrosion resistant material with adjustable vinyl covered jaws at one end Bor holding the glass sampler in a vertical position and with an adjustable thumb screw type holder at the other end to fit rods up to 13 mm (l/Z inch) in diameter. 3.
29、3.2.1.7 Chain clame. The chain,clamp shall have a 152.4 mm (6-inch) extension rod that shall attach to a 50.8 to 101.6 mm (2- to 4-inch) diameter pipe. The clamp and rod, as shown on figure 7, shall support the utility clamp and the glass sampler rigidly. (3/8-inch) diameter. The extension rod shall
30、 have a 9.5 mm 3.3.2.1.8 Neoprene tubing. The rubber tubing shall be black neoprene rubber tubing with 4.8 mm (3/16 inch) id and at least 1.6 mm (1/16 inch) wall thickness. The length shall be 914.4 mm (3 feet). 3.3.2.1.9 Instructions for use. The following instructions for use shall bo included on
31、a piece of 215.9 by 279.4 mm (8-1/2 by Il-inch) paper folded incide the storage case: “TESTING OUTFIT, FEEDWATER, DISSOLVED OXYGEN CONTENT 1. Apparatus (a) Chain clamp (b) Utility clamp (c) Rubber tubing (d) Glass sampler (e) Plastic snapper (f) Thermometer (O to 100C) (32 to 212F) (8) Finger cot 2.
32、 Reagents (a) Ampoule. An ampoule containing the needed reagents is supplied. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-K-24674 66 M 9777906 0133143 1 M DOD-K-24674(SH) 3. Interferences (a) Colored water or suspended matter in the sample
33、may interfere in detecting comparator color differences. 4. Procedure (a) Attach one end of a short length of black neoprene rubber (b) Attach the glass sampling tube to the other end of the rubber tubing to the outlet nipple of the sample cooler. tubing and secure the glass tube upright with the ut
34、ility clamp. permanently attached near the sample cooler. of sample water at a maximum rate to flush the sample system. The utility clamp and the chain clamp shall be (c) With the cooling water flow secured (see notes), start a flow NOTES : (1) When the sample cooler uses sea water OK drinking water
35、 as coolant, close the cooling water inlet valve to the cooler - in preparation for hot flushing. To preclude cooler rupture during hot flushing, a cooling water outlet valve has not been installed in these systems. conditioning main as coolant, close only the cooling water outlet valve for the samp
36、le cooler in preparation for hot flushing. Cooling water flow should be controlled by the cooling water outlet valve only. All other cooling water valves remain open. (2) When the sample cooler uses chilled water from the air (d) Initiate coolant flow to flush the line with sample flow at a temperat
37、ure of 60 to 93C (140 to ZOOOF) for at least 5 minutes. Knead the rubber tubing to dislodge air bubbles. of between 21 and 38OC (70 and 100F) as measured by a thermo- meter. (e) Adjust cooling water and sample flow rate to obtain a temperature (f) Place the snapper in the sampling tube. (g) Place an
38、 ampoule in the snapper. Sample flow must be sufficient to float the ampoule without forcing it out of the snapper. Hold the ampoule down for 1 minute. drawn in and a small bubble of inert gas will remain in the ampou 1 e. (h) Press down on the ampoule to break the tip. A sample will be NOTE : The t
39、est must be run immediately after collection since the sample will absorb oxygen from the atmosphere. (i) Remove the ampoule from the snapper, immediately cover the open end with a finger (the finger should be protected with a finger cot), and invert the ampoule 10 times allowing the gas bubble to t
40、ransverse the tube to mix reagent and sample. comparator, with the open end up. daylight fluorescent lamp. (j) Wipe the ampoule dry and place it in the center of the (k) View the comparator from the bottom with the top pointing at a Provided by IHSNot for ResaleNo reproduction or networking permitte
41、d without license from IHS-,-,-(1) Rotate the comparator until a color match is obtained or the sample color lies between two of the standard colors or the sample color is darker than the 40 micrograms per liter (pg/L) (40 p/b) standard. O 5 10 15 20 25 30 40 (1) If a color match is obtained, record
42、 that value in the log. (2) If the color lies between the two standard colors, add the two values, divide by two, and record that value in the log. (40 p/b) standard, record greater than 40 pg/L (40 p/b) in the log. (3) If the color of the sample is darker than the 40 pg/L O 5 k 2.5 10 12.5 15 U Frc
43、 18 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-20 F: sl al e a/ w pr, H h B X cn t :- I- - .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-K-2467Ll 66 999790b 0133159 5 W J I E 4 4 m U 11 a3 H Frc 21 U.8. BOVERNHENT PRINTINB OFFICE: 1986 - 605-036/44795 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
