Standardization of Watertight Hatches and Scuttles March 2021

Agenda 1. Current Issues 2. Project Goals 3. Proposed Consolidation Efforts 4. Examples (30

Watertight Hatches and Scuttles: Current Issues - Multitude of drawings and options resulting in

Project Goals: - Consolidate designs - Eliminate seldom used/unnecessary sizes - Select single pressure

Project Goals (cont. ): - Limitations - Opportunities to standardize design of hatches and

Proposed Consolidation: - Reduce number of available sizes - Eliminate seldom used sizes -

Examples: 3 closures were chosen as examples for this project: -30 x 30 Hatch

30 x 30 Hatch Standardization - Add standard design for QA hatch - Add

Current 30 X 30 Hatch Design Proposed 30 X 30 Hatch Design - 2

Current 30 x 30 Hatch Designs 10 HARD STUFF DONE RIGHT A DIVISION OF

Proposed 30 x 30 Hatch Designs Design: TBD 1 Design: TBD 5 Design: TBD

Proposed 30 x 30 Hatch Designs (cont. ) - Based on the defined examples

30 X 60 Hatch Standardization • Standardize pressure rating • Standardize to 12 dogs

Current 30 X 60 Hatch Design - 2 Profiles - Flush - Raised Proposed

Current 30 x 60 Hatch Designs 15 HARD STUFF DONE RIGHT A DIVISION OF

Proposed 30 x 60 Hatch Designs Design: TBD 12 Design: TBD 15 Design: TBD

Proposed 30 x 60 Hatch Designs (cont. ) - Based on the defined examples

21” Scuttle Standardization • Standardize to one pressure rating • Standardize to 4 dogs

Current 21” Scuttle Design - 2 Profiles - Flush - Raised Proposed 21” Scuttle

Current 21’’ Scuttle Designs 20 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS

Proposed 21” Scuttle Designs Design: TBD 16 Design: TBD 18 *Current/Proposed 21” Scuttle not

Proposed 21” Scuttle Designs (cont. ) - Based on the defined examples and proposed

Current Raised Hatch Hinge Design 2 Standard Raised Hatch Hinge Designs - Non-Spring Balanced

Proposed Raised Hatch Hinge Design - Single design used with and without spring balance

Benefits and Recommendations of Project: - Reduced variation and consolidation of parts and materials

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Standardization of Watertight Hatches and Scuttles March 2021 1 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Agenda 1. Current Issues 2. Project Goals 3. Proposed Consolidation Efforts 4. Examples (30 x 30 hatch, 30 x 60 hatch, 21 inch scuttle, raised hatch hinge design) 5. Benefits of the Project 2 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Watertight Hatches and Scuttles: Current Issues - Multitude of drawings and options resulting in excessive variations in size, design, parts, and materials - Hatches with scuttles are designed to use 18” scuttles which are no longer preferred - There are no standard drawings associated with 30 x 30 Quick Acting (QA) hatches - There are no standard details for other commonly used options (i. e. , spring balance option for 30 x 30 hatch) - Lack of standard details require vendor designs to vary from vendor to vendor and nullify shock qualifications 3 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Project Goals: - Consolidate designs - Eliminate seldom used/unnecessary sizes - Select single pressure for each size - Consolidate parts - Standardize design of each size (to greatest extent possible) - Standardize materials - Standardize panel thickness - Standard hinge for use with or without spring balance - Standard stiffener size rather than having multiple stiffener options - Consolidate drawings similar to NAVSEA standard door drawings 4 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Project Goals (cont. ): - Limitations - Opportunities to standardize design of hatches and scuttles exist but opportunities to reduce the total number of variations are limited due to the nature of how hatches and scuttles operate - e. g. Dogging mechanisms are completely different between quick acting and individually dogged variants - This in turn necessitates different panel designs and thus the continued existence of multiple variations 5 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed Consolidation: - Reduce number of available sizes - Eliminate seldom used sizes - Eliminate sizes that can be replaced by other sizes (i. e. all 42 x 48 could be replaced by 48 x 48) - Limit available pressure options to one higher pressure design - All hatches and scuttles requiring lesser pressure to use the higher rated standard closure 6 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Examples: 3 closures were chosen as examples for this project: -30 x 30 Hatch -30 x 60 Hatch -21” Diameter scuttle The raised hatch hinge design was also reviewed 7 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

30 x 30 Hatch Standardization - Add standard design for QA hatch - Add standard detail for spring balance - Standardize pressure rating - Standardize to 8 dogs for Individually Dogged (ID) hatches and 4 dogs for QA hatches - Standardize thickness of panel - Standardize stiffener sizes - Add a scuttle option of 21” 8 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Current 30 X 30 Hatch Design Proposed 30 X 30 Hatch Design - 2 Profiles - Flush - Raised - Individually dogged and Quick Acting - Multiple psi options - One standard psi option - 6, 8, and 10 dog options - - Various panel thicknesses and stiffener sizes 8 dogs for Individually dogged and 4 dogs for QA - Standard panel thickness and single stiffener size - Spring balanced option - Add a scuttle option of 21” - No detail for spring balanced option - No detail for 21” scuttle option 9 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Current 30 x 30 Hatch Designs 10 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed 30 x 30 Hatch Designs Design: TBD 1 Design: TBD 5 Design: TBD 3 Design: TBD 6 Design: TBD 4 *Current 30 x 30 Hatch not depicted in examples ** Proposed 30 x 30 Hatch with Spring Balance not developed for this study *** New Proposed QA 30 x 30 Hatches provided as part of the study 11 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed 30 x 30 Hatch Designs (cont. ) - Based on the defined examples and proposed designs - 7 standard drawings could be replaced with 4 - 2 new designs developed for Quick Acting where non existed - The benefits of the proposed designs is focused on reducing the variations in pressure ratings, number of dogs, etc. 12 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

30 X 60 Hatch Standardization • Standardize pressure rating • Standardize to 12 dogs • Standardize thickness of panel • Standardize stiffeners • Add a scuttle option of 21” 13 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Current 30 X 60 Hatch Design - 2 Profiles - Flush - Raised Proposed 30 X 60 Hatch Design - 2 Profiles - Flush - Raised - Individually dogged - Multiple psi options - One standard psi option - 10, 12, and 14 dog options - 12 dogs - Various panel thicknesses and stiffener sizes - Single panel thickness and single stiffener size - Detail for spring balanced option - No detail for 21” diameter scuttle - Add a 21” scuttle option 14 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Current 30 x 60 Hatch Designs 15 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed 30 x 60 Hatch Designs Design: TBD 12 Design: TBD 15 Design: TBD 7 Design: TBD 14 *Current/Proposed 30 x 60 Hatch not depicted in examples ** Proposed 30 x 60 Hatch with Spring Balance not developed for this study *** New Proposed 30 x 60 Hatches w/ 21” Scuttle provided as part of the study 16 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed 30 x 60 Hatch Designs (cont. ) - Based on the defined examples and proposed designs - 13 standard drawings could be replaced with 7 - 2 new designs developed for hatches with 21” scuttles where non existed - The benefits of the proposed designs is focused on reducing the variations in pressure ratings, number of dogs, etc. 17 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

21” Scuttle Standardization • Standardize to one pressure rating • Standardize to 4 dogs • Standardize thickness of panel • Standardize stiffeners 18 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Current 21” Scuttle Design - 2 Profiles - Flush - Raised Proposed 21” Scuttle Design - 2 Profiles - Flush - Raised - Quick acting - 5, 15, and 30 psi options - Single pressure rating - Multiple dog options - 8 dogs for ID and 4 dogs for QA - Various panel thicknesses and stiffener sizes - Single panel thickness and single stiffener size - No detail for spring balanced option 19 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Current 21’’ Scuttle Designs 20 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed 21” Scuttle Designs Design: TBD 16 Design: TBD 18 *Current/Proposed 21” Scuttle not depicted in examples ** Proposed RLPF 21” Scuttle not developed for this study 21 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed 21” Scuttle Designs (cont. ) - Based on the defined examples and proposed designs - 6 standard drawings could be replaced with 4 - The benefits of the proposed designs is focused on reducing the variations in pressure ratings, number of dogs, etc. 22 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Current Raised Hatch Hinge Design 2 Standard Raised Hatch Hinge Designs - Non-Spring Balanced hinge designs has single blade - Single hinge blade - 9/16” Diameter hinge pin - Spring balanced hinge design - Double blade design - 5/8” Diameter hinge pin 23 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Proposed Raised Hatch Hinge Design - Single design used with and without spring balance - Single Hinge Blade with two ears - Standard spring balance parts used 24 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES

Benefits and Recommendations of Project: - Reduced variation and consolidation of parts and materials will simplify manufacturing - Reduced cost to manufacture - Reduced lead time - Standardization and consolidation will simplify ship sustainment - Less part types to keep on hand - Increased ability to substitute closures in more locations - Candidate for an RA project -Finalize proposed designs -Produce samples for testing -Submit for Navy approval 25 HARD STUFF DONE RIGHT A DIVISION OF HUNTINGTON INGALLS INDUSTRIES