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Submarine Safety (SUBSAFE) Program


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DSS-SOC 
(Deep Submergence Systems Scope of Certification) Program 

NAVSEA SS800-AG-MAN-010/P-9290 

Approved for Public Release


 

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DSS-SOC 

In 1982, five divers lost their lives when a vacuum was inadvertently drawn onboard USS GRAYBACK (SSG 574).  This accident was the results of operator error, faulty equipment and an inadequate design.  This led to redesign of diving systems to ensure a vacuum could not be drawn. It also led to requiring safety analysis during design for all systems and certification of all material within the Scope of Certification (SOC).    

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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DSS-SOC 

  • Deep Submergence System
    • Those systems and components which, when working together, provide the capability for manned operations.
  • Scope of Certification
    • The SOC of a DSS is comprised of those systems, subsystems and components and the associated maintenance and operation procedures required to provide maximum reasonable assurance that DSS personnel are not imperiled during systems operations.    
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Objective Quality Evidence (OQE) 
 

OQE is a statement of fact, either quantitative or qualitative, pertaining to the quality of a product or service based on observations, measurements, or tests that can be verified. 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Identification of DSS-SOC Items: 
 

  • Electric Boat Purchasing Standard Clause 12-34

       Deep Submergence Systems – Scope of Certification 

       No specific action is required of the Supplier by this clause alone.  This clause is applied to identify that the subject part number is a Deep Submergence Systems – Scope of Certification (DSS-SOC) item which requires Certification and/or Test Reports defined elsewhere in the part number.

                                                    

       Special care should be taken to maintain required Certifications and/or Test Reports for 7 years after close of the purchase order, as required by Electric Boat Specification 2678.  All applicable Certifications and/or Test Reports must be traceable to the Purchase Order and must accompany the shipment to the address specified by the Purchase Order.                                                                     
     

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Certification for Manned Use of DSS-SOC Equipment 

  • Functional Audits of Shipyard Quality System
  • Certification Audits of Ship
    • Phase I
    • Phase II
  • Maintenance of Certification
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Material Control 

  • Material Control Division A
    • Material where a single failure would result in loss of DSS Personnel
  • Material Control Division B
    • Material where failure would require immediate emergency corrective action
  • Material Control Division C
    • All other material not Division A or B
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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DSS-SOC Safety Concerns 

  • Toxic Off-gassing
  • Implodable Volumes
  • Explodable Volumes
  • Certification of Correct Material
  • Certification of Testing
  • Maintenance of Certification
  • Cleanliness
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Certificate of Conformance 

  • Required by Electric Boat Standard Clause 12-4
    • Required for all DSS-SOC Material
  • Certification of Conformance Test 
    • Required when invoked by Electric Boat Standard Clause 12-36
 
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Certification of MIL-STD-1622 Critical Cleanliness 

  • Invoked By Electric Boat Standard Clause 76-9BM
  • Test Report for Cleaning Results is Required
  • Identification per Paragraph 5.16.4.1 is Required
  • Proper Packaging is Required
  • MIL-STD-1330 Oxygen Cleaning is allowed
 
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Certification of Implodability Testing 

  • Hydrostatic Testing requires cycling from zero pressure to operating pressure for 10 cycles
  • Test Reports must contain all required information specified by the Purchase Order
  • Test Reports must be signed by the test operator and inspector
  • Serial Numbers for each item are required and are to be traceable to the Test Reports
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Common Problems  

  • Incorrect Lubricant used
  • Incorrect or unapproved paint used on Label Plates
  • Required Certifications from subtier suppliers are unavailable
  • Cleanliness requirements have not been met or are not maintained
  • Stickers/Labels required for MIL-STD-1622 or MIL-STD-1330 Cleanliness are missing or incomplete
  • Traceability from hardware to Test Reports is missing
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

 

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Summary 

  • The lives of DSS-SOC Personnel depend upon
    • Compliance with the approved design
    • Use of approved and correct materials
    • Compliance with Testing and Certification Requirements
    • Compliance with Cleanliness, Packaging and Marking Requirements
    • Compliance with OQE Requirements
 

Approved for Public Release


DSS-SOC

(Deep Submergence Systems – Scope of Certification)

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