1、 MIL-STD-1379 -102A 19 9 779791J 0030777 9 MIL-STD-l399(NAVY) SECTION 102A 5 February 1988 SUPERSEDING MIL-STD-l399(NAVY) SECTION 102 1 December 1970 (See 9.2) MILITARY STANDARD INTERFACE STANDARD FOR SHIPBOARD SYSTEMS SECTION 102 LOW PRESSURE DRY AIR SERVICE FOR SURFACE SHIPS I 0 AMSC N/A FSC 1990
2、DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited , 7 THIS DOCUMENT CONTAINS % PAGES. - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_-_ MIL-STD-3397 -LOZA 37 W 7977733 0030778 O H MIL-STD-l399(NAVY) SECTION 102A 5 Febru
3、ary 1988 DEPARTMENT OF THE NAVY NAVAL SEA SYSTEMS COMMAND Washington, DC 20362-5101 Interface Standard for Shipboard Systems, Low Pressure Dry Air Service for Surface Ships 1. and Agencies of the Department of Defense. This Military Standard is approved for use by the Naval Sea Systems Command, Depa
4、rtment of the Navy, and is available for use by all Departments F 2. Beneficial comments (recommendations, additions, deletions) and any perti- nent 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, Was
5、hington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. ii e Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1377 -102A 17 7777731 003
6、0777 2 MIL-STD-l399(NAVY) SECTION 102A 5 February 1988 FOREWORD The purpose of this section is to define the standard interface require- ments that are a constraint upon the design of shipboard electronic equipment which will utilize ships low pressure dry air support systems. iii Provided by IHSNot
7、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1377 -102A 17 W 7G7311 0030780 7 M MIL-STD-l399(NAVY) SECTION 102A 5 February 1988 CONTENTS Page Paragraph 1 . GENERAL. SCOPE. INTERFACE AND APPLICABILITY . 1 1.1 General . 1 1.2 Scope . 1 1.3 The interface . 1 1
8、.4 Applicability . 1 2 . REFERENCED DOCUMENTS. . 1 2.1 Government documents 1 2.1.1 Standa.ds . 1 2.2 Order of precedence . 2 3 . DEFINITIONS . 2 3.1 Shipboard dry air support system 2 4 . REQUIREMENTS 2 5 . INTERFACE CHARACTERISTICS AND CONSTRAINTS . 2 5.1 Interface characteristics . 2 5.2 Interfac
9、e constraints . 3 6 . DOCUMENTATION REQUIREMENTS . 3 6.1 DD Form 1423 3 7 . DEVIATIONSeeeeeeeeeeeee 4 7.1 Conditions 4 7.2 Deviation procedure . 4 8 . REPORTS AND CORRESPONDENCE 4 9 . NOTESeeeeeeeeee 4 9.1 Subject term (key word) listing 4 9.2 Changes from previous issue . 4 FIGURE Figure 1 . Interf
10、ace . 1 iv Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-UIL-STD-l399(i?JAVY) SECL”I0N 102A 5 February 19.33 1. GENERAL, SCOPE, LMTERPACE AND APPLTCARiLLTY 1.1 General. This section is an integral part OE ifIl,-STD-1399. !?hen the interface between
11、 the ships low pressure dry air support system and user equip- ment is under consideration this section and the standard shall be viewed as a single document. The policies and procedures established by FIIL-STD-1399 are mandatory. 1.2 Scope. This section establishes interEace requirements for shipbo
12、ard equipment utilizing; low pressure dry air support systems to ensure cornpatability between such equipment and the ships dry air support system. 1.3 The interface. The interface which is the concern of this section is shown symbolically on figure 1 (see definitions of MIL-STD-1399): INTERFACE DRY
13、 AIR SUPPORT EQ UIPttENT SYSTEkI 2/ CONSTRAINTS - i/ CHARACTERISTICS - Purity Compatability Temper at ur e Pressure Dew point Flow capacity FIGURE 1. Interface. 1.4 Applicability. This section was developed primarily for use in establishing interface requirements for shipboard electronic equipment r
14、equir- ing a continuous source of high quality (nonconductive) gas under pressure such as antenna waveguides, however, this section is also applicable to low pressure equipment requiring compressed air of greater purity than is available from the ship service low pressure air system specified in MIL
15、-STD-1399, section 106. 2. REFERENCED DOCUPENTS 2.1 Government documents. 2.1.1 Standards. Unless otherwise specified, the following standards of the issue listed in that issue of the Departnent of Defense Index of Speci- fications and Standards (DoDISS) specified in the solicitation form a part of
16、this standard to the extent specified herein. 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STAN DARDS Y L L TT ARY MIL-STD-1399 - Interface Standard for Shipboard Systems. MIL-STD-1399, - Compressed Air Service for Surface Ships. Section 106 (Co
17、pies of standards required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by tlie contracting activity.) XIL-STD-l399(NAVY) SECTION 102A 5 February 1988 2.2 Order of precedence. In the event: of a conflict between the
18、text of this standard and the references ci-ted herein, the text of this standard shall take precedence. b 3. DEFINITIONS 3.1 Shipboard dry air support system. A shipboard dry ait: support: system is a system specifically designed to provide high quality dry air with standard characteristics as spec
19、iEied herein. Each system is composed of the necessary dehydrators, filters, dew point indicators, coritrol panels, temperature, flow and pressure indicators, piping, valves, and al.1 other accessories required to ensure a continuous supply OE dry, oil-free air to user equipment. Shipboard dry air s
20、upport systems are usually pressurized by t?ie ship service low pressure air compressors (see MIL-STD-1399, section 100). O 4. REQUIREMENTS 4.1 The interface requirements and constraints established herein are inandatory (see requirements of MIL-STD-1399). 5. INTERFACE CHARACTEKICTICS AND CONSTRAINT
21、S 5.1 Interface characteristics. The interface characteristics of the ships dry air support system ace given below. Each shipboard system will provide dry, oil-free air with the characteristics of 5.1.1 through 5.1.5 to the equipment interface. (a) Hydrocarbons - 50 parts per million by weight (b) P
22、articulates - 5 microns 5.1.2 Temperature. The temperature will be 150 degrees Fahrenheit (OF) maximum. 5.1.3 Pressure. The pressure from the discharge of the dry air system dehydrators may range from 67 to 1.50 pounds per square inch (Ib/in2) gauge. If lower pressures are required, standard dry air
23、 control panels or an approved pressure reducing station shall be used. froin the ship service LP plant receiver (see MIL-STD-1399, section 106) to each dry air system user, shall not exceed 10 lb/in gauge. a The maximum pressure drop in the piping 2 2 Provided by IHSNot for ResaleNo reproduction or
24、 networking permitted without license from IHS-,-,-_-_ .- MIL-STD-3377 -LOZA 19 m 9777733 0030783 m MIL-ST-l399(NAVY) SECTION 102A 5 February 1988 I I I I I I I I I I I I l I I i i I i 5.1.4 Dew point. The maximum moisture content shall not exceed 1.5 x 10-5 pounds of water per pound OF dry air, whi
25、ch corresponds to a dew point of minus 40F at 80 lb/in2 gauge. specified dew point requirements of air at minus 40F at 80 lb/in2 gauge. requirement for a lower dew point is not desirable since it will entail consider- able development effort and cost. In such instance, the need to deviate From this
26、dew point interface characteristic must be fully justified (see section 7). Navy standard desiccant dehydrators will produce the Any 5.1.5 Flow capacity. System capacity will be based on the user equipment requirements as documented in 6.1, with an allowance for standby capacity and future growth. 5
27、.2 Interface constraints. The interface characteristics of the ships dry air support system impose certain constraints on the design and instal.lation of equipment utilizing such support. These constraints are described in 5.2.1 and 5.2.2. 5.2.1 Compatibility. The design and installation of equipmen
28、t utilizing ships dry air support must be compatible with the interface characteristics given in 5.1. 5.2.2 User air requirements. The dry air requirements for each user shall be reported as specified i.n 6.1. 6. DOCUMENTATION REQUIREMENTS 6.1 DD Form 1423. When this standard is invoked, the followi
29、ng data requirements, as applicable, shall be specified by the Principal Development Aciivity (PDA) on Cntract Data Requirements List- (CDRL) DD Form 1423 attached to the contract or order. NAVSEA, Code 56Y31, shall be included in the distri- bution listed in block 14 of DD Form 1423 for data specif
30、ied. (a) Dry air requirements - individual user system and equipment. This documentation applies to each individual user system and equip- ment which will utilize compressed air from a shipboard dry air support system. It shall include the following information: (1) Operating pressure (lb/in2 gauge)
31、, including tolerances (2) Flow rate in standard cubic feet per minute (ft3/min) (3) Estimated duration and frequency of flow for intermittent (4) Dew point, if incompatible with the air quality standards (5) Aerosol content, if incompatible with the air quality (6) Particulate matter, if incompatib
32、le with the air quality (maximum) services specified in 5.1 standards specified in 5.1 standards specified in 5.1 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1377 -1OZA 17 m 77c711 003078Y b MIL-STD-l399(XAVY) SECTION 102A 5 February 19
33、88 (b) Dry air service requirements - total ship. This documentation applies ta the total ship dry air support system. It shall include the following information: (i) User equipment identiEicat ion (2) Wumber installed (3) (4) (5) TotaL li3/min (all units) (6) Estimated duration and frequency of CLw
34、 for intermittent Operating pressure ( lb/in2) and tolerances FLOW rate (ft3/min) (!naxiinurn per unit) services 7. DEVIATIONS 7.1 Conditions. In achieving the purpose of this section it is recognized I that there must be some flexibility of application. During the early design stage o equipment uti
35、lizing the ships dry air support system it may become apparent that significant advantages in the overall design and operation of such equipnent can be achieved by deviating from the standard characteristics speci- Eied lierein. In such instance, the provisions of the deviations requirements o MIL-S
36、TD-1399 must be complied with. 7.2 Deviation procedure. When invoking deviations to this section, reports shall be made in accordance with 8.1. 8. REPOKTS AND CORRESPONDENCE 8.1 Reports, correspondence and similar information shall be submitted to NAVSEA by the contracting activity or action with co
37、pies to: (a) NAVSEA 56Y31 (b) Program manager 9. NOTES 9.1 Subject term (key word) listing. Dehydrator Flow capacity User equipment 9.2 Changes from previous issue. Asterisks are not used in this revision to identify changes with respect to the previous issue due to the extensiveness OE the changes. Review activities: AS, OS, EC Preparing activity: Navy - SH (Project 1990-N066) User activity: ml . 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
