1、I INCH-POUND I AMENDMENT 1 21 April 2000 MI L-PRF-53137A(CR4) PERFORMANCE S P ECI FI CATI ON HEATER, ARMY SPACE (ASH), ELECTRIC POWERED, MULTIFUEL This amendment is approved for use within the USA Communications-Electronics Command, Logistics and Readiness Center, Department of the Army, with MIL-PR
2、F-53137A(CR4), dated 10 July 1997. PAGE 2 2.2.1, under STANDARDS, DEPARTMENT OF DEFENSE, delete “MIL-STD-462“ in its entirety. Add: “MIL-STD-2169B - High-Altitude Electromagnetic Pulse (HEMP) Environment. (Copies of the above classified military standard are available to personnel with the appropria
3、te security clearance from Headquarters US Army Communications-Electronics Command, Research, Development and Engineering Center, Command/Control and Systems, Integration Directorate - South, ATN: AMSEL-RD-C2-PD-E, 1 O1 08 Gridley Road, Suite 1, Ft Belvoir, VA 22060-581 7.)“ 2.2.2, last paragraph, a
4、t the end of the paragraph: change “AMSEL-LC-IEW-D-EE“ to “AMSEL-LC-CCS-G-GB“. PAGE 5 3.1, first sentence: delete “with either diesel or JP-8 fuels“ and substitute “with both diesel and JP-8 fuels“. At the end of the paragraph, add the following sentence: “Thresholds and objectives are identified in
5、 this document by TI and O, respectively.“ AMSC NIA FSC 4520 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. PAGE 1 OF 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-PRF-53137A(CR4) AMENDMENT 1 3.3.1, delete
6、 the first sentence and substitute: “The heater shall deliver not less than 120,000 TI, 150,000 O British Thermal Units per Hour (BTUH) of clean air (see 3.8.7) when operated in the all fresh air mode, with an air temperature of O OF, at sea level up to 4,000 feet altitude, against an 0.5-inch water
7、 gauge (WG) pressure, using diesel fuel, grade Low Sulfur No. I-D conforming to A-A-52557.“ 3.3.2: Add the symbol “r“ after each dimension in this paragraph. Add the following sentence at the end of the paragraph: “Producing heaters that are smaller than the above dimensions is an objective of this
8、document.“ 3.3.3: line 1, delete “The heater shall weigh no more than 355 pounds II and substitute: “The heater shall weigh no more than 360 pounds r, 355 pounds O, i ncl ud i ng II. 3.4.1, line 3, delete “from -60 to +I 60 OF II, and substitute: “from -60 TI, -65 O to +I60 OF“. 3.4.2: line 3, delet
9、e “from -40 to +65 OF“ and substitute: II from -40 TI, -60 O OF unassisted start, -60 TI, -65 O OF assisted start to +65 OF, in all climatic conditions.“ PAGE 6 3.4.6: lines 4 and 5, delete “shall not exceed 85 db(A)“ and substitute: “shall not exceed 75 db(A) TI, 65 db(A) O II. Lines 5 and 6, delet
10、e “shall not exceed 65 db(A).“ and substitute: “shall not exceed 65 db(A) TI, 55 db(A) O.“ 3.4.7, delete in its entirety and substitute: “3.4.7 NBC comDatibilitv and Hiah-Altitude Electromaanetic Pulse (HEMP). The heaters will be mission essential in many applications; therefore, NBC contamination s
11、urvivability is required. The heaters will be decontaminable to negligible risk levels, will be hardened against the effects of chemical agents and decontaminants, and will be compatible with soldiers in full NBC-protective ensemble. The heaters must be HEMP survivable but operation through a HEMP e
12、vent is not required. The recycling of power to restore operations after a HEMP event is acceptable. When tested as specified in 4.6.8.2, the heater shall operate normally following a HEMP event (see 6.9).“ 3.5.1, first sentence: Delete “figure 1“ and substitute “figure I-a.“ 2 Provided by IHSNot fo
13、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-PRF-53137A(CR4) AMENDMENT 1 3.5.1, at the end of the paragraph add new sentence: “Conducted emissions (CEI02) on the heater power leads shall not exceed the applicable values shown on Figure 1 -b.“ 3.5.3, at the end of
14、 the last sentence: delete “cover.“ and substitute “cover (see 6.8). II 3.6, at the beginning of the paragraph add: “The heaters shall primarily operate using JP8 and diesel fuels DF-I, DF-2, and DF-A, as alternative fuels. The fuel system shall be easily accessible and allow for rapid draining.“ PA
15、GE 8 3.7.1, line 9, seventh sentence: delete: “and self concealing.“ 3.7.5, delete entire paragraph and substitute: “3.7.5 Mobilitvharkina devices. The heaters are required to be soldier-portable for short distances for repositioning purposes similar to the heaters currently in the field. The heater
16、 shall be mounted on a chassis with integral skids and tires, and the tires shall be mounted on wheels that are removable or retractable without the use of external tools. It is desirable to have wide, ski-like skids on the ASH for movement over mud and snow. It is also desirable to utilize non-pneu
17、matic (airless) tires, but they should be interchangeable with the fielded pneumatic tires. Provisions shall be made for securing the wheels to the heater when not installed for use. The heater shall have continuous handrails or minimum handles to assist in manual localized movement and positioning.
18、 The heater shall be provided with a parking stand to provide three-point support when the wheels are installed and with integral means to prevent movement of the heater when parked in level or specified inclined positions (see 3.7.6). Weight distribution of heater components shall provide a safe an
19、d stable configuration in all specified operating positions. PAGE 9 3.8.4, lines 3 and 4, delete “within 15-seconds“ and substitute: “within 18-seconds“. 3.8.5, delete entire paragraph and substitute: “3.8.5 Hiah temperature limit. A high temperature limit control shall shut down the burner when the
20、 temperature at the heater discharge outlet exceeds the pre-set limit and illuminate the panel indicator light. After a high temperature limit shutdown, the flame failure control (see 3.8.4) shall lock out the burner and require reset from the control panel. The high temperature limit control shall
21、reset automatically prior to the outlet 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-PRF-53137A(CR4) AMENDMENT 1 temperature falling to 125 OF. The pre-set limit on the high temperature limit control shall be 200 +/- 10 OF.“ 3.8.7, Add the
22、following to the beginning of the paragraph: “The heater shall incorporate carbon monoxide (CO) sensors (primary and backup) which, when activated, will cause an audible and a visual alarm to be activated and will shut down the burner. The visual alarm shall remain on after system shutdown until it
23、is reset. The primary sensor shall be in the air discharge (supply) outlet of the heater, and the backup sensor shall be located on the remote control box.“ PAGE 10 3.9, add the following to the end of the paragraph: “The control circuit shall include a method of monitoring and controlling flame qua
24、lity, controlling valves, solenoids, and relays. Displays and indicators must be simple, straightorward, and easily read or recog n zed .II 3.9.5, delete in its entirety and substitute: “3.9.5 Remote control box. A hermetically sealed remote control box shall be provided. The control box shall conta
25、in a thermostat with a manual override and a minimum range of from +35 to +85 F. The thermostat will provide a maximum differential of +/-5 F TI, +/-3 F O from the setting which controls the heated shelters temperature. The remote control box will permit a designated operator to start or stop the un
26、it or change the thermostat setting by following the attached instruction plates. The box shall be assembled with a cable of 25 feet minimum length and an environmental resistant connector compatible with a mating receptacle on the heater. The box shall also contain a CO sensor (see 3.8.7).“ 3.9.6,
27、delete subparagraphs a. thru g. and substitute: “a. The life accuracy of the meter shall be kO.1 percent over all operating and storage conditions. The accuracy may be degraded over the frequency range from 50 to 70 Hz, at the same percentage as the percentage change in the input frequency from 60 H
28、z. b. The total time range readout of the meter shall be 9,999 hours.“ PAGE 11 3.10.1, at the beginning of the paragraph add: “The heaters will have detachable, flexible, insulated ducts for supply- and return-air openings (separate duct storage is 4 Provided by IHSNot for ResaleNo reproduction or n
29、etworking permitted without license from IHS-,-,-MI L-PRF-53137A(CR4) AMENDMENT 1 acceptable). The heater ducts shall be sized for compatibility with standard shelter open i n g s. II Line 2, delete “with two 15-foot long ducts.“ and substitute “with two 12-inch nominal diameter, 15-foot long ducts.
30、“ PAGE 12 3.10.2, add at the beginning of the paragraph: “The heated air supply and return openings shall be 11.75 k0.125 inches in diameter.“ 3.1 1.2, line 2, delete “color of the heater shall be Camouflage Green“ and substitute “color of the heater shall be camouflage pattern in accordance with 3.
31、1 1.2.4. Top coat colors for the camouflage painting shall be specified on the camouflage patterns. First Articles need not be camouflage painted.“ 3.1 1.2.2, last line, delete “treated, but shall not be painted.“ and substitute: “treated, but does not need to be painted.“ PAGE 14 3.13, at the begin
32、ning of the paragraph add: “The ASH will be operable and maintainable in daylight and darkness by representative soldiers dressed appropriately for the anticipated environments for use (arctic, NBC, etc.). Risk to personnel will be minimized by design and performance characteristics. Safety deficien
33、cies will be identified and eliminated or mitigated to acceptable levels. This will be verified by analysis, inspection, and test. Heater design will be IAW applicable Army safety standards. The heaters will not present uncontrolled health hazards throughout the life cycle of the system. All compone
34、nts will be located to permit easy access for operating and maintaining the heater. The ASH shall be designed and/or configured to provide an efficient and effective user interface for all critical install, operate, and maintain (IOM) tasks or procedu res.“ PAGE 15 3.14.1, add at the end of the para
35、graph: “In addition, the ASH must have a probability of completion of 20 consecutive days operating 21.5 hrs per day with no more than one essential function failure/system abort of at least R(EFF/SA)=0.94. The Median Time To Repair (MedTR) for all Essential Unscheduled Maintenance Demands (EUMD) mu
36、st not exceed 1 hour. The Maximum Time To Repair for 90% of all EUMD (MAXTR 90) must not exceed 1.5 hours.“ 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-PRF-53137A(CR4) AMENDMENT 1 X 3.1 4.3, delete first sentence and substitute: “The total
37、 maintenance ratio (MR) must not exceed 0.01 3 maintenance man-hours / operating hour.“ EM1 and HEMP 4.6.8 3.4.7, 3.5, 3.5.1, and 3.9 PAGE 16 3.15.2, last sentence, delete “located on the remote control box,“ and substitute “located on the control panel,“. 3.15.3, delete in its entirety and substitu
38、te: “3.15.3 “Preventive maintenance checks and services (PMCS). Under normal 24- hour operating conditions (three 8-hour shifts), the heater will provide 21.5 hours of on- demand heat. The additional 2.5 hours will consist of 1.5 hours for set up (to include starting, shut down, and relocation), and
39、 1 hour for PMCS. The heater will be used for varying time periods with refueling and scheduled services performed as required. Routine servicing will be accomplished at the operator/crew level and will consist of, but not be limited to, cleaning and replacing filter elements, refueling, and conduct
40、ing PMCS.“ 3.15.5, at the end of the paragraph add: “The heater shall be repairable by module replacement of major component systems.“ PAGE 20 4.5, b, line 2, delete “between -40 and +65 OF II and substitute “between -60 TI, -65 O to +65 OF II. Table I I: Under column “Requirements Paragraph“, for “
41、Altitude“ Test: delete: “3.31, 3.4.1“ and substitute: “3.3.1, 3.4.1“. PAGE 21 Table Il, line 8 (as shown), delete row for “EMI“ test in its entirety and substitute: 4.6.2, line 2, delete II between -40 and +65 OF II and substitute II between -60 FI, - 65 O to +65 OF II. 4.6.3, line 3, delete “at sea
42、 level atmospheric pressure.“ and substitute: “at 4,000 feet atmospheric pressure.“. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-PRF-53137A(CR4) AMENDMENT 1 PAGE 22 4.6.4.1 , Table I I I: Under column “Temperature OF“ for “1 400“ Time: del
43、ete “1 14“ and substitute: “1 45“. PAGE 24 4.6.4.2, lines 2 and 3, delete “test at -60 OF ambient temperature . . . tests at -40 OF.“, and substitute: “test at -65 OF ambient temperature and manipulation and operation tests at -60 TI, -65 O OF.“ 4.6.4.2.5, Steps 5 and 6, delete “-60 OF“ and substitu
44、te: “-60 TI, -65 O OF“. Steps 8, 9, 1 O, 11, and 12: delete “-40 OF“ and substitute: “-40 TI, -60 O OF unassisted start, -60 TI, -65 O OF assisted start.“ Step 1 1, also delete “JP-8“ and substitute “DF-A. PAGE 33 4.6.4.7, first sentence: delete “temperature between -40 and +65 OF,“ and substitute:
45、“temperature between +40 and +65 OF,“. PAGE 36 4.6.7, add after the first sentence: “The rate of fuel consumption of the heater shall be measured and recorded in order to determine the total amount of fuel consumed by the heater during the test.“ Last line: delete “Failure to start and operate conti
46、nuously for the specified period shall“ and substitute: “Failure to start and operate continuously for the specified period, or nonconformance to 3.6, shall“. 4.6.8 and all subparagraphs under 4.6.8, delete in their entirety and substitute: “4.6.8 Electromaanetic interference and hiah-altitude elect
47、romaanetic pulse. The heater shall be subjected to the radiated emissions, electric field, 1 O kHz to 18 GHz test (REI 02) and the conducted emissions, power leads, 1 O kHz to 1 O MHz test (CE1 02) in accordance with MIL-STD-461, and as specified herein. 4.6.8.1 Radiated emissions test conditions. 7
48、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-PRF-53137A(CR4) AMENDMENT 1 4.6.8.1 .I ODeratina Modes. The controls of the heater shall be set for the following modes of operation at steady-state conditions: a. “VENT“ mode. b. “AUTO HEAT“ mode
49、, highest temperature setting. c. “AUTO HEAT“ mode, lowest temperature setting. d. “MANUAL HEAT“ mode. 4.6.8.1.2 Item orientation. The radiated emissions test shall be performed in its entirety as specified herein with each of the four sides of the heater facing the antenna. 4.6.8.2 Conducted emissions test conditions. 4.6.8.2.1 ODeratina Modes. The controls of the heater shall be set for the followin
