REQUIREMENTS FOR THE DESIGN AND TESTING OF SUBMARINE MAIN BATTERY VENTILATION SYSTEMS

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-02-2005

Publisher

UK Ministry of Defence Standards

1 Scope
2 Warning
3 Related Documents
4 General Requirements
5 Definitions
6 Abbreviations
7 Function
  7.1 Hydrogen Concentration Limits
  7.2 Requirements During Build and Refit
  7.3 Documentation
  7.4 Ship Operating Procedures
  7.5 Planned Maintenance Requirements
8 General Design Assumptions
  8.1 Hydrogen Evolution Calculations
      8.1.1 Modes 1 and 2 - Gassing Charges
      8.1.2 Mode 3 - Open Circuit/Discharge
      8.1.3 Hydrogen Evolution Volumes
      8.1.4 Design Assumption for Hydrogen Evolution
      8.1.5 Worst-Case Pressure and Temperature
      8.1.6 Design Assumptions for Battery Ventilation Air
  8.2 General Design Requirements
      8.2.1 Battery Ventilation System Design
      8.2.2 Nuclear Submarines - Ventilation States
      8.2.3 Conventional Submarines - Ventilation line-ups
      8.2.4 System Redundancy
      8.2.5 Ventilation Arrangements within Battery Tanks
      8.2.6 Hydrogen Removal - Gassing Charges (Mode 1)
      8.2.7 Hydrogen Removal - Charges below the Gassing
             Threshold Voltage (Mode 2)
      8.2.8 Hydrogen Removal - Open Circuit/Discharge Conditions
             (Mode 3)
      8.2.9 Electrical Supplies to Fans
      8.2.10 Electrical Equipment
      8.2.11 Dust Filters and Flameproof Gauzes
      8.2.12 Fire Flaps
      8.2.13 Remote Operation
  8.3 Monitors, Indicators and Alarms
      8.3.1 General
      8.3.2 Ventilation Flaps, Valves, etc Indication
      8.3.3 Fan Status
      8.3.4 Airflow
      8.3.5 Battery Voltage Alarm
      8.3.6 LP Blower Tripped Alarm
      8.3.7 Hydrogen Concentration
  8.4 Hazard Analysis
  8.5 Test and Trial Requirements
      8.5.1 Test Occasions
      8.5.2 Trunking Air Tests (Shop)
      8.5.3 Trunking Air Tests (Installed)
      8.5.4 Airflow Test
      8.5.5 Hydrogen Clearing Fans Trial-(Mode 3 Battery
             Ventilation)
      8.5.6 Hydrogen Content Trials
      8.5.7 Reduced Airflows for HCTs
      8.5.8 Hydrogen Concentration Corrections during HCTs
      8.5.9 Airflow Indicator Trial

Describes requirements for the design and testing of ventilation systems including monitors and alarms for submarine main battery installations. It only applies to batteries with lead-acid cells.

DevelopmentNote	Supersedes DEFSTAN 02-788(2000), DEFSTAN 08-116/1(2000) and DEFSTAN 02-778(2000) (03/2005) This standard is obsolescent because it is no longer required for procurement of new equipment but is retained for maintenance purposes in support of existing in-service equipment. (07/2012)
DocumentType	Standard
Pages	24
PublisherName	UK Ministry of Defence Standards
Status	Current
Supersedes	DEFSTAN 08-116/1(2000) : 2000 DEFSTAN 02-788(2000) : 2000 DEFSTAN 02-778(2000) : 2000

DEFSTAN 08-123/1(2000) : 2000	REQUIREMENTS FOR THE DESIGN AND TESTING OF EQUIPMENTS TO MEET ENVIRONMENTAL CONDITIONS - CATEGORY 2
DEFSTAN 00-41/3(1993) : 1993	RELIABILITY AND MAINTAINABILITY MOD GUIDE TO PRACTICES AND PROCEDURES
DEFSTAN 08-147(PT2)/1(2000) : 2000	REQUIREMENTS FOR DAMAGE CONTROL AND FIRE PROTECTION FOR THE SAFETY OF SURFACE SHIPS AND SUBMARINES - CATEGORY 1 - PART 2: SUBMARINES
BS 6941:1988	Specification for electrical apparatus for explosive atmospheres with type of protection N
DEFSTAN 08-159(PT2)/1(2001) : 2001	REQUIREMENTS FOR AIR-CONDITIONING AND VENTILATION - PART 2: HM SUBMARINES