1、MILITARY SPECIFICATION BiOWRS, SOOT (SHIPBOARD USE) This amendment forms a part of Military Specifi- cation MIL-B-l947A(SHIPS), 18 August 1960. # Page 1, paragraph 1.2, iisting, Ciass 1, Une 2: Delete “600 and substitute “710“. #. Page 1, paragraph 2.1; Delete reference to all Federal Specifications
2、. NIL-B-1947A (5) 44 9799906 020OL4 9 W II MTL-B-l947A(SHZFS) AMENDMENT - 5 11 July 1966 SUPERSEDING 0 Amendment - 4 18 August 1964 # Page 1, paragraph 2.1: Delete reference to Military Specifications MIL-B-233, MIL-B-10377, MIL-L- 10547, MIL-P-15424 and MIL-C-16173 and substitute: ffMIL-V-22094 - V
3、ades, Globe, Angle and Y, Flanged Bonnet, Manually Operated (Sizes 2 Inches and Below). 1 Page 1, paragraph 2.1: Delete reference to Military Standards , MIL-STD-129 and MIL-STD-167. # Page 2, paragraph 3.1: Delete and substitute: It3. 1 Head design characteristics. - For the head materials specifie
4、d for each class of soot blowers (see 3.5.3.6.1 and 3.5.3.6.2), fluctuations of not more than 25F. are permissible. I # Page 2, paragraph 3.2: First sentence, delete and substitute lfClass 1 soot blowers shall be furnished with ASA standard mounting flanges conforming to ASA Publication B16.5 and AS
5、ME Boiler and,Pressure Vessel Code, Section WI, for the maximum pressure and temperature specifiedtt; Une 8, delete tkxcesst and substitute %ccess“, Page 2: Add as paragraph 3.2.1. “3.2.1 Fiange finish. - The gasket contact-surfaces of all flanges used in the soot-blower assembly (head, companion, o
6、rifice, element flange, and so forth) shall be finished with a circular lay (concentric or phono- graphic) having a roughness not exceeding 500 roughness height rating (RHR) produced by machining cuts of O. 003 inch maximum depth but not less than 40 cuts per inch of face width. The finish within th
7、e above limits selected by the manufacturer is to be designated on all applicable drawings,“ Page 3, paragraph 3.5.2: Delete and substitute: “3.5.2 Type 1 (Stationary) soot blowers (operating mechanism). - Type I (stationary) soot blowers shall include an adjustable orifice that is preset by the sup
8、plier for 300 p. S. i, (or less as approved by the command or agency concerned) steam admission to the element. This orifice installation, or other suitable means to be installed in the viciniv, shall contain a 3/8 inch NPT tap for insertion of pressure measuring device to verify admission steam pre
9、ssure entering element. Unless otherwise specified (see 6. i), type I soot blowers shall be complete with steam valves. Steam valves shall conform to MiL-V-22094, material to be suitable for the source of steam. A spring-loaded air relief valve of corrosion-resistant material (3/8 inch i. p. 8. mini
10、mum) shall be provided to admit purging air to the element and to prevent combustion gases from l/CHANGES FROM PREVIOUS ISSUE. THE OUTSIDE MARGINS OF TRIS DOCUMENT HAVE BEEN MARK- - ED t#ll “0 INDICATE WHERE .CHANGES (DEWTIONS, ADDITIONS, ETC. ) FROM THE PREVIOUS ISSUE HAVE BEEN MADE. SUMES NO LIABI
11、LITY WHATSOEVER FOR ANY INACCURACIES IN THESE NOTATIONS. BIDDERS AND CONTRACTORS ARE CAUTIONED TO EVALUATE THE REQUIREMENTS OF THIS DOCUMENT BASED ON THE ENTIRE CONTENT AS WRITTEN IRRESPECTIVE OF TIIE MARGINAL NOTATIONS AND RELATION- SHIP TO THE LAST PREVIOUS ISSUE. THIS HAS BEEN DONE AS A CONVENIEN
12、CE ONLY AND THE GOVERNMENT AS- Licensed by Information Handling ServicesRIL-B-LSLI7A (5) LI4 9999906 0209035 O Page 5: Add 88 paragraph 3.5.4.3: “3.5.4.9 Connecting piece (swivel or extension tube). - A tubular connecting piece shall be provided be- tween the head and the element. Corrosion-resistin
13、g material shall be used where the piece passes through the stuffing box in the head. The connecting piece shall be for the purpose of securing the element to the head during field installation in a suitable manner to insure maintenance of the proper angular position of the nozzles with respect to t
14、he operating mechanism in the head. An indicator to show the angular position of the nozzles to the operator at all times shall be attached to the gear wheel or secured by other means approved by the command or agency concerned. “he swivel tube or the element shall be at least 6 inches longer than d
15、eeigned length to allow for field modification to suit installation conditions. ke2of _. - - MIL-B-l947A(SIIPS) AMENDMENT - 5 entering the piping. A 3/8 inch connection shall be provided for this purpose. The air relief valve shall be provided with fittings suitable for connection to the pressurized
16、 air space by 1/2 inch steel or copper tubing. Unless otherwise specified (see 6. I), type I soot blowers shall be complete with air relief tubing. It Page 3, paragraph 3.5.3.1: Biete and substitute: 113.5.3.1 Operation. - The steam head shall be designed to transmit steam to the element or lance fr
17、om a fixed steam connection without steam leakage when the element or lance is being operated. It shall be design- ed BO that the head inlet is on or below the horizontal in a plane normal to the axis of the soot blower ele- ment. Page 3, paragraph 3.5.3.2, Une 3: Delete “of the head. Page 3, paragr
18、aph 3.5.3.3: Delete and substitute: “3.5.3.3 Steam pressure control in head, - The method of steam admission and steam pressure control shall be as approved by the command or agency concerned. Means of pressure control shall be included in each head design to reduce the pressure at the element a max
19、imum blowing pressure of 300 p, 6. i. A 3/8 inch NPT tap is to be provided in each soot blower head for insertion of a pressure measuring device, This pressure control shall be an adjustable part of the head in order to effect no greater steam entrance pressure to the element than the above designat
20、ed 300 p. S. i. The control shall be capable of external adjustment and shall be present by the supplier for the designated maximum.“ Page 4, paragraph 3.5.3.5, last sentence: Delete and substitute Wnless otherwise specified (see 6. i), the scavenging air relief valves shall be connected to the pres
21、surized air space by 1/2 inch steel or copper tubing and by suitable joints approved by the command or agency concerned. # # Page 4, paragraph 3.5.3.6.1: Heading, delete ft600tt and substitute “710“; listing, delete reference to Head and substitute: # Page 4, paragraph 3.5.3.6.1 listing: Delete refe
22、rence to Head and substitute: “Head-Carbn molybdenum alloy steel castings or forgings in accordance with ASME hbli- cation SA-217 grade WC-1 or SA-I82 grade F1, respectively. It # Page 4, paragraph 3.5.3.6.2 listing: Delete reference to Head and substitute: “3ead-l-l/4 percent chrome; 1/2 percent mo
23、lybdenum alloy steel casting or forging in accor- dance with ASME Publication SA-217 grade WC-6 or SA-182 grade FI1 respectively, It Page 4, paragraphs 3.5.3.7 and 3.5.3.8: Delete. Page 5, paragraphs 3.5.4.2: Delete and substitute: “3.5.4.2 Reduction gearing. - Reduction gearing shall be provided in
24、 the head for notation of the elements, The gear ratio shall be not less than 7 to 1. For manually operated units designed for rotation in one direc- tion only, an arrow shall be cast on or attached to the gear wheel, the sheave wheel or operating handwheel, whichever is most convenient for observat
25、ion by the operating personnel, to indicate the correct direction of rotation for operation of the blower. For power operated units, the correct direction of rotation for the ele- ment shall be indicated on the unit wherever it is most convenient. Licensed by Information Handling ServicesMIL-B-1747A
26、 (5) 44 7777906 0209036 2 i WLB-lQ4?A(SEXIPS) AMENDMENT - 5 Page 5: Add OB Fagraph 3.5.4.4: 113.5.4.4 Head interchangeability. - All heads of like design within the same class shall have fully inter- changeable internal parts. All replacement heads of types I and Ei shall be furnished with sufficien
27、t cam and trigger parts to allow their assembly to fit any rotation requirements, both 360 degrees and below. Re- placement swivel tubes or elements supplied aha11 provide sufficient length to allow field modification toactual boiler depth condition6 (at least 6 inches). Further, for all replacement
28、 heads means shall be provided to allow attachment of either 1-1/2 inch or 2-inch elements. Page 5, paragraph 3.5.6, item (b): Delete and substitute: *I) “raveling carr . - The traveling carriage mechanism ahall be sir-motor driven, Mechanical means sha 4 use to translate and rotate the lance. Manua
29、l emergency means shall be provided to allow the removal of the lance from boiler cavities in case of air-motor failure. For manual emergency retraction of lance, in addition to gearing with handwheel, suitable kits shall be furnished 88 necessary to allow rotation of the gearing into accessible pos
30、ition for continuation by shipbuilder from this point by rods and universal joints or by sheave wheel and chain for operation of emergency retract from front of boiler, The traveling carriage must be of rugged construction, with suitable means of supporting the lance, during operation of rotating an
31、d translating, to prevent whipping. Minimum rotation speed of the lance shall be five revolutions per minute, Minimum translation speed shall be 5 feet per minute. Suitable means shall be provided to mechanically restrain the feed tube from rotation in the steam chest. in addition, the feed tube sha
32、ll be suitably ground and poiished to reduce wear on the packing. A suitable means shall be provided to prevent, pireses through the boiler casing. under all conditions of boiler or soot blower operation, excessive gas leakage around the lance where it J Page 5, paragraph 3.6.5, Ifne 6: Delete “OP M
33、d substitute “by. l1 Page 7, paragraph 3.9: Delete and substitute: . - Drawings shall be furnished in accordance with MIL-D-963. An arrangement drawing showing 9, 9tP= e location of the soot blowers on the boiler and of the number and location of the nozzles in each element with respect to the tubes
34、, as finally approved by the command or agency concerned, shall be furnish- ed. Master eets, consisting of not more than six drawings per set, shall be prepared for such class and type of soot blower for which a supplier desires approval. These masters shall include all possible variations in constr
35、uction, Commercial type accessories euch as air-motors and accompanying gear shall be shown on one dimensioned assembly and major detail drawing, together with a list of material identifying by part and manufacturer the major replacement parts. Radiographic and magnetic particle inspection markings
36、shall also be delineated on one of the drawings. On any contract or order, the previously approved master draw- ings indicated above shall serve as the nucleus for drawing preparation. When only types I and II soot blow- ers are required on a contract or order, total number of applicable drawings sh
37、all not exceed 6; number of drawings to cover all types of soot blowers on a contract or order shall not exceed 12. Page 7, paragraph 3.11.1, item (h): Delete and substitute: I(,) Element for bottest location in boiler. Page 7, pcrragraph 9.11.1, item (i): Delete. Page 9, paragraphs 4.6.4 and 4.6.5:
38、 Delete. Page 9, paragraph 4.6.6.2: Delete and eub8titute: 14. 6.6.2 Magn etc particle inspection. - All pressure containing alloy forgings rated at 00 pounds and above ahall be 100 percent magnetic particle inspected in accordance with MIL-STD-2?1. (Carbon steel pressure containing forgings are not
39、 to be magnetic particle inspected. )I # Pages 9 and 10, section 5: Delete and iubetitute: “5. PREPARATION FOR DELIVERY *15. 1 Domestic shipment and early equipment installation and for storage of onboard repair parts. - Page S of 6 pages *. - - Licensed by Information Handling ServicesMIL-B-Q?A(SHI
40、PS) AMENDMENT - 5 “5.1.1 Soot blower components. - 185.1,1.1 Preservation and packaging. - Preservation and packaging which may be the suppliers Commer- cia1 practice shall be sufficient to afford adequate protection against corrosion, deterioration and physical damage during shipment from the suppl
41、y source to the using activity and until early installation. carrier at lowemand will afford protection against physical or mechanical damage during direct ship- ment from the supply source to the using activity for early installation. The shipping containers or method of packing shall conform to th
42、e Uniform Freight Classification Ratings, Rules and Regulations or other carrier regulations as applicable to the mode of transportation and may conform to the suppliers commercial practice. “5.1.1.3 Marking. - Shipment marking information shall be provided on interior packages and exterior shipping
43、 contaimaaccordance with the contractors commercial practice. The information shall include nomenclature, Federal stock number or manufacturers part number, contract or order number, contractors name and destination. “5,l. 1.2 Packing. - Packing shall be accomplished in a manner which will insure ac
44、ceptance by common “5.1.2 Onboard repair parts. - Onboard repair parts shall be unit protected in accordance with MIL-P- “5.2 The requirements and levels of preservation, packaging, packing and marking for shipment shall be (“5.2.1 The following provides various levels for protection during domestic
45、 shipment and storage or “5.2.1.1 Preservation and packaging. - “5.2.1.1.1 Level A. - 115.2.1.1.1. 1 Soot blower components. - Soot blower components (see 3.4 except 3.4(b) and (c) ) shall be preserved and packaged method I in accor ce with the guide Unes of MIL-P-116. All external unpainted ferrous
46、 metai surfaces and all internal surfaces in contact with steam shall be coated with preservative com- pound conforming to grade 4 of MIL-C-16173. Antifriction bearing shall be filled to operating capacity with normal operating lubricant. All openings shall be plugged, capped or sealed to prevent en
47、trance of dirt and moistqre , preserved and packaged method III in accordance with MIL-P-116. packaged in accordance with the suppliers commercial practice. 116. Parts shall be individually packaged unless used in sets or quantities greater than one. specified by the procuring activity (see 6.1). ov
48、erseas shipment, which may be required when procurement is made: “5.2. 1.1.1.2 Bearings (or hangers) and elements. - The bearings (or hangers) and elements shall be “5.2.1.1.2 Level C. - Soot blower Components, (see 3.4) except repair parts, shall be preserved and “5.2,1,2 Packing. - “5.2.1.2.1 Leve
49、l A. - Soot-blower components, packaged as specified, shall be packed in containers conforming to anywthe following specifications at the option of the contractor: Specification PPP-B-601 PPP-B-621 . PPP-B-640 Ippe or class Overseas class 2 Class 2 Shipping containers shall have caseliners conforming to MIL-L-10547. ed in accordance with the appendix to MIL-L-10547. Shppping containers shall be closed and strapped in accordance with the applicable box specification or appendix thereto, The gross weight of the shipping con- tainer
