Attach 3 Naval Ships Technical Manual Chapter 634 S9086-VG-STM-010 Dated 01-01-2009.pdf

NAVAL SHIPS’ TECHNICAL MANUAL

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CHAPTER 634

DECK COVERINGS,

GENERAL

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THIS PUBLICATION SUPERSEDES S9086-VG-STM-010, CHAPTER 634, VOLUME 1,

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REVISION

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4 1 JAN 2009 THIS CHAPTER COMPLETELY REVISED.

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TABLE OF CONTENTS

Chapter/Paragraph Page

634 DECK COVERINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

SECTION 1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

634-1.1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 634-1.1.1 Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 634-1.1.2 Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

634-1.2 APPROVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

634-1.3 INSTALLATION CRITERIA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

634-1.4 GENERAL SAFETY PRECAUTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

634-1.5 DECK PREPARATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 634-1.5.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 634-1.5.2 Extent Of Coverage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 634-1.5.3 Critically Coated Areas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 634-1.5.4 Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 634-1.5.5 Surface Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 634-1.5.6 Coaming Rings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 634-1.5.7 Priming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 634-1.5.8 Deck Paint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

SECTION 2 APPROVED DECK COVERING MATERIALS BY AREA . . . . . . . . . . . . 2-1

634-2.1 MATERIALS APPROVED FOR SHIPBOARD SPACES. . . . . . . . . . . . . . . . 2-1

SECTION 3 MATERIALS, INSTALLATION, AND REPAIR . . . . . . . . . . . . . . . . . . . 3-1

634-3.1 DECK COVERING UNDERLAY SYSTEM. . . . . . . . . . . . . . . . . . . . . . . 3-1 634-3.1.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 634-3.1.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 634-3.1.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 634-3.1.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 634-3.1.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

634-3.2 ON-DECK INSULATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 634-3.2.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 634-3.2.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 634-3.2.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 634-3.2.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

634-3.3 WATERPROOF MEMBRANE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 634-3.3.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 634-3.3.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 i

TABLE OF CONTENTS - Continued

634-3.3.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 634-3.3.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 634-3.3.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

634-3.4 BATTERY SPACE DECK COVERINGS. . . . . . . . . . . . . . . . . . . . . . . . . 3-4 634-3.4.1 Acid Resistant Rubber Sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

634-3.5 CARPET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 634-3.5.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 634-3.5.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 634-3.5.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 634-3.5.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 634-3.5.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 634-3.5.6 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 634-3.5.7 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

634-3.6 CERAMIC TILE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 634-3.6.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 634-3.6.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 634-3.6.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 634-3.6.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 634-3.6.5 Installation Steel Deck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 634-3.6.6 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 634-3.6.7 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15 634-3.6.8 Installation Wood Deck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

634-3.7 COSMETIC POLYMERIC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 634-3.7.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 634-3.7.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 634-3.7.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16 634-3.7.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 634-3.7.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 634-3.7.6 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

634-3.8 ELECTRICAL GRADE SHEET AND MAT. . . . . . . . . . . . . . . . . . . . . . . 3-18 634-3.8.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 634-3.8.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18 634-3.8.3 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19 634-3.8.4 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19 634-3.8.5 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 634-3.8.6 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

634-3.9 FATIGUE REDUCING DECK TILE. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 634-3.9.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 634-3.9.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 634-3.9.3 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 634-3.9.4 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 ii

634-3.9.5 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

634-3.10 HIGH WEAR DECK TILE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 634-3.10.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 634-3.10.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 634-3.10.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21 634-3.10.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22 634-3.10.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22 634-3.10.6 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22 634-3.10.7 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

634-3.11 LIGHT-WEIGHT CONCRETE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30 634-3.11.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30 634-3.11.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30 634-3.11.3 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30 634-3.11.4 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

634-3.12 MASTIC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 634-3.12.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 634-3.12.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 634-3.12.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 634-3.12.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 634-3.12.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31 634-3.12.6 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

634-3.13 VINYL COMPOSITION TILE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 634-3.13.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 634-3.13.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 634-3.13.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 634-3.13.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 634-3.13.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32 634-3.13.6 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34 634-3.13.7 Repair or Replacement of Deck Tiles. . . . . . . . . . . . . . . . . . . . . . . 3-34

634-3.14 SLIP-RESISTANT SELF-ADHESIVE TREADS. . . . . . . . . . . . . . . . . . . . . 3-34 634-3.14.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34 634-3.14.2 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34 634-3.14.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34 634-3.14.4 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34 634-3.14.5 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34 634-3.14.6 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35 634-3.14.7 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

634-15 POLYESTER RESIN AND GLASS CLOTH (GRP). . . . . . . . . . . . . . . . . . . 3-35 634-3.15.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35 634-3.15.2 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

634-3.15.2.1 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35 iii

634-3.15.2.2 Surface Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . 3-36 634-3.15.2.3 Resin Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36 634-3.15.2.4 Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

634-3.15.3 Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37 634-3.15.4 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

634-3.16 MISCELLANEOUS DECKING MATERIALS. . . . . . . . . . . . . . . . . . . . . . 3-37 634-3.16.1 Concrete And Aluminum Diamond Plate. . . . . . . . . . . . . . . . . . . . . 3-37 634-3.16.2 Doormat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37 634-3.16.3 Foundry Decks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38

SECTION 4 GENERAL MATERIALS FOR AND MAINTENANCE OF SHIPBOARD

DECK COVERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

634-4.1 GENERAL PRECAUTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

634-4.2 MATERIALS AND EQUIPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 634-4.2.2 Approved Detergents, Disinfectants, Deck Coverings, And Deck Finish. . . . 4-2

634-4.3 CLEANING TECHNIQUES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 634-4.3.1 Resilient Deck Coverings (Vinyl, Vinyl Composition Or Rubber Types). . . 4-2 634-4.3.2 Mastic (latex-Mastic). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 634-4.3.3 Cosmetic Polymeric. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 634-4.3.4 Carpets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 634-4.3.5 Teak Deck Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

SECTION 5 DECK SEAM CAULKING INSTALLATION . . . . . . . . . . . . . . . . . . . . 5-1

634-5.1 CAULKING COMPOUNDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

634-5.2 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 634-5.2.1 Several Kinds Of Caulking Compounds Have Been Specified. . . . . . . . . 5-1 634-5.2.2 Polyurethane And Polysulfide Caulking Compounds. . . . . . . . . . . . . . 5-1

634-5.2.2.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 634-5.2.2.3 Seam Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 634-5.2.2.4 Primers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 634-5.2.2.5 Preparation Of Rubber Caulking Compound (Polysulfide). . . . 5-2 634-5.2.2.6 Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 634-5.2.2.7 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

634-5.2.3 Marine Glue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 634-5.2.3.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 634-5.2.3.2 Seam Repairs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

634-5.3 FLIGHT DECK ALUMINUM LANDING INSERT SEAM. . . . . . . . . . . . . . . 5-5 634-5.3.1 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 634-5.3.2 Installation Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 iv

SECTION 6 WOOD DECK REPAIRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

634-6.1 INSTALLATION OF WOOD PLANKING OVER STEEL PLATING. . . . . . . . . 6-1

634-6.2 SYNTHETIC RUBBER UNDERLAYMENT. . . . . . . . . . . . . . . . . . . . . . . 6-1 634-6.2.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 634-6.2.2 Steel Subdeck Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 634-6.2.3 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 634-6.2.4 Primer Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 634-6.2.5 Underlayment Compound Preparation. . . . . . . . . . . . . . . . . . . . . . 6-1 634-6.2.6 Lay-Down. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

634-6.3 GUNNING COMPOUNDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

634-6.4 UNDERLAYMENT FOR JET WARMUP AREA COOLING PANELS. . . . . . . . 6-2

634-6.4.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 634-6.4.2 Panel Pretreatment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 634-6.4.3 Deck Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 634-6.4.4 Mastic Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4 634-6.4.5 Seam Caulking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

634-6.5 REPAIR OF LEAKS IN CROSS-DECK TIEDOWN CHANNELS. . . . . . . . . . . 6-4

634-6.5.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4 634-6.5.2 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4 634-6.5.3 Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

SECTION 7 NONSKID DECK COVERINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

634-7.1 GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 634-7.1.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

634-7.2 NONSKID DECK COVERINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

634-7.3 APPROVED NONSKID MATERIALS. . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 634-7.3.1 MIL-PRF-24667. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 634-7.3.2 Peel & Stick Nonskid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4 634-7.3.3 Ablative Nonskid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

634-7.4 ENVIRONMENTAL CONDITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 634-7.4.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 634-7.4.2 Storage Temperatures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 634-7.4.3 Ambient Air Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6 634-7.4.4 Deck Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6 634-7.4.5 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7 634-7.4.6 Dew Point. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

634-7.5 SURFACE PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8 v

634-7.5.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8 634-7.5.2 Surface Preparation Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

634-7.5.2.1 Abrasive Blast Cleaning. . . . . . . . . . . . . . . . . . . . . . . 7-8 634-7.5.2.2 Water-Jetting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8 634-7.5.2.3 Power Tool Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . 7-9

634-7.5.3 Steel Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9 634-7.5.4 Aluminum Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14 634-7.5.5 GRP Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17 634-7.5.6 SOLVENT WIPE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

634-7.6 PRIMING METAL AND GRP SURFACES. . . . . . . . . . . . . . . . . . . . . . . . 7-18 634-7.6.1 Primer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18

634-7.6.1.1 Qualified Primers. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18 634-7.6.2 Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18 634-7.6.3 Storage Prior To Mixing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18 634-7.6.4 Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18 634-7.6.5 Expired Shelf Life. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18 634-7.6.6 Mixing Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18 634-7.6.7 Primer Application Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . 7-19 634-7.6.8 Primer Cure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21 634-7.6.9 Primer Dry Film Thickness (DFT). . . . . . . . . . . . . . . . . . . . . . . . 7-22

634-7.7 NONSKID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23 634-7.7.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23 634-7.7.2 Two-Part Resin Based Nonskid Systems (MIL-PRF-24667). . . . . . . . . . 7-24

634-7.7.2.1 Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24 634-7.7.2.2 Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . . . 7-24 634-7.7.2.3 Storage Prior To Mixing. . . . . . . . . . . . . . . . . . . . . . . 7-24 634-7.7.2.4 Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . 7-24 634-7.7.2.5 Mixing Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . 7-24 634-7.7.2.6 Nonskid Application Instructions. . . . . . . . . . . . . . . . . . 7-25 634-7.7.2.7 Application Methods. . . . . . . . . . . . . . . . . . . . . . . . . 7-26 634-7.7.2.8 Rolling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26 634-7.7.2.9 Troweling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

634-7.7.2.10 Spraying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27 634-7.7.2.12 Cure Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27

634-7.7.3 Peel & Stick Nonskid System. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29 634-7.7.3.1 Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29 634-7.7.3.2 Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30 634-7.7.3.3 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

634-7.8 MIL-PRF-24667, TYPE III DECK OVERLAY. . . . . . . . . . . . . . . . . . . . . . 7-33 634-7.8.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33 634-7.8.2 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33 634-7.8.3 Prior To Mixing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33 634-7.8.4 Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33 634-7.8.5 Type III Primer Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33 vi

634-7.8.6 Application Of Type III Underlayment (Intermediate Coat). . . . . . . . . . . 7-34 634-7.8.7 Application Of Type III Nonskid. . . . . . . . . . . . . . . . . . . . . . . . . 7-35 634-7.8.8 Cure Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35 634-7.8.9 Inspection Of Type III Nonskid Coating. . . . . . . . . . . . . . . . . . . . . 7-35

634-7.9 COLOR TOPPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.2 Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.3 Approval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.4 Manufacturer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.5 Restrictions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.6 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.7 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36 634-7.9.8 Environmental Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37 634-7.9.9 Color Toppings Mixing Instructions. . . . . . . . . . . . . . . . . . . . . . . . 7-37

634-7.9.10 Color Topping Application Instructions. . . . . . . . . . . . . . . . . . . . . . 7-37

634-7.10 REPAIRS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38 634-7.10.1 Repair Of Two-Part Resin Based Nonskid Systems. . . . . . . . . . . . . . . 7-38 634-7.10.2 Repair Of Peel & Stick Nonskid Systems. . . . . . . . . . . . . . . . . . . . 7-39

634-7.11 CLEANING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39 634-7.11.1 Cleaning Nonskid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39

634-7.11.2 NAVSEA APPROVED FLIGHT DECK CLEANING COMPOUNDS. . . . . 7-40

634-7.11.2.1 Type I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40 634-7.11.2.2 Type II. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40

634-7.12 TEST AND MEASUREMENT PROCEDURES. . . . . . . . . . . . . . . . . . . . . 7-41 634-7.12.1 Deck Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41 634-7.12.2 Weather Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41

634-7.12.2.1 Sling Psychrometer. . . . . . . . . . . . . . . . . . . . . . . . . . 7-42 634-7.12.3 Digital Psychrometer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43 634-7.12.4 Testex Press-O-Film. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43 634-7.12.5 Wet Film Thickness Gage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44 634-7.12.6 SSPC-PA 2, Type I Pull-Off Dry Film Thickness Gage (Banana Gage). . . . 7-44 634-7.12.7 SSPC-PA 2 Type II Electronic Dry Film Thickness Gage. . . . . . . . . . . . 7-45

634-7.13 QUALITY ASSURANCE CHECKLIST. . . . . . . . . . . . . . . . . . . . . . . . . . 7-45 634-7.13.1 The Quality Assurance (QA) checklist . . . . . . . . . . . . . . . . . . . . . 7-45 634-7.13.2 Data Shall Be Recorded Throughout All Phases. . . . . . . . . . . . . . . . . 7-46 634-7.13.3 Initiate The Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47 634-7.13.4 Completion of the Surface Preparation Section. . . . . . . . . . . . . . . . . 7-47 634-7.13.5 Completion of the Primer Application Section. . . . . . . . . . . . . . . . . . 7-48 634-7.13.6 Completion of the Nonskid Application or Underlayment Section. . . . . . . 7-49 634-7.13.7 Color topping QA Information. . . . . . . . . . . . . . . . . . . . . . . . . . 7-50 634-7.13.9 Application Of Nonskid To RAST Track And Side Plates. . . . . . . . . . . 7-50

634-7.13.10 Copies Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-61 vii

SECTION 8 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

634-8.1 ASTM INTERNATIONAL SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . 8-1

634-8.2 SOCIETY FOR PROTECTIVE COATINGS (SSPC) SPECIFICATIONS. . . . . . . 8-1

634-8.3 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO). . . . . . 8-1

SECTION 9 PRESERVATION PROCESS INSTRUCTIONS (PPI) FOR NONSKID . . . . . 9-1

634-9.1 GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

634-9.2 APPROVED PRESERVATION PROCESS INSTRUCTIONS. . . . . . . . . . . . . . 9-1

634-9.3 PRESERVATION PROCESS INSTRUCTION AVAILABILITY. . . . . . . . . . . . . 9-1

A DETERMINATION OF HUMIDITY AND DEW POINT . . . . . . . . . . . . . . A-1

B DETERMINATION OF DRY FILM THICKNESS (DFT) ACCEPTABILITY . B-1

C QUALITY DEFICIENCY REPORT (QDR) & REQUEST FOR

ENGINEERING INVESTIGATION (REI) . . . . . . . . . . . . . . . . . . . . . C-1

634-C.1 NONSKID QUALITY DEFICIENCY REPORT (QDR). . . . . . . . . . . . . . . . . C-1

634-C.5 REQUEST FOR NONSKID ENGINEERING INVESTIGATION (REI). . . . . . . . C-4

D LANDING AREA/NON-ABRASIVE (COMPOSITION L) NONSKID

APPLICATION AREA DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . D-1

E SSPC & NACE STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

F Technical Manual Deficiency/Evaluation Report (TMDER) . . . . . . . . . . . . F-1 viii

LIST OF TABLES

Table Title Page

634-2-1. Approved Deck Covering Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

634-6-1. Magnesium-Oxychloride-Resorcinol Mastic For Underlay . . . . . . . . . . . . . . . 6-3

634-7-1. Nonskid Material Application Area/Product Types . . . . . . . . . . . . . . . . . . . 7-2

634-7-2. Minimum Service Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

634-7-3. Approve MIL-PRF-24667 Non-Skid NSN’s . . . . . . . . . . . . . . . . . . . . . . . 7-4

634-7-4. Required Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

634-7-5. Power Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

634-7-6. Spread Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

634-7-7. Peel And Stick Nonskid Sizes And Supplies . . . . . . . . . . . . . . . . . . . . . . . 7-30

634-7-8 Nonskid Deck Cleaners For Use With Seawater Dilution Only . . . . . . . . . . . . 7-40

634-9-1. Approved Preservation Process Instructions . . . . . . . . . . . . . . . . . . . . . . . 9-1

634-B-1. DFT Readings And Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 ix

LIST OF ILLUSTRATIONS

Figure Title Page

634-3-1. Application of Putty to Weld Lines and Corners. . . . . . . . . . . . . . . . . . . . . 3-6

634-3-2. Finished Overlap on Flat Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

634-3-3. Finished Overlap in Corners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

634-3-4. Method of Finishing Top Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

634-3-5. Lining Integrity Test Jig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

634-3-6. Drain Ring and Caulking Installation Details . . . . . . . . . . . . . . . . . . . . . . 3-13

634-3-7. General Gouge Repair Procedure for High Wear Tile . . . . . . . . . . . . . . . . . . 3-25

634-3-8. Template Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

634-3-9. Router Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

634-3-10. Cross-Sectional Sketch of Foundry Deck Installation . . . . . . . . . . . . . . . . . . 3-38

634-7-1. Water-Jet Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

634-7-2. Closed Loop Water-Jetting Tools For Small Areas . . . . . . . . . . . . . . . . . . . 7-11

634-7-3. Roto-Peen And Dust Free Power Tools . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

634-7-4. Poor Surface Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16

634-7-5. Primed Deck And Stripe Coat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20

634-7-6. Padeye And Inspection Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21

634-7-7. Cross-Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

634-7-8. Proper Nonskid Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

634-7-9. Improper Nonskid Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

634-7-10. Exterior Peel And Stick Nonskid Installation . . . . . . . . . . . . . . . . . . . . . . 7-30

634-7-11. Peeling The Backing From Nonskid . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32

634-7-12. Placing The Peel And Stick Nonskid . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32

634-7-13. Cutting The Peel And Stick With Scissors . . . . . . . . . . . . . . . . . . . . . . . . 7-32

634-7-14. Color Topping Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38

634-7-15. Flight Deck Scrubber Machine And Scrubx . . . . . . . . . . . . . . . . . . . . . . . 7-40

634-3-16. Rail Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41 x

LIST OF ILLUSTRATIONS - Continued

Figure Title Page

634-3-17. Weather Measuring Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42

634-7-18. Sling Psychrometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42

634-7-19. Press-O-Film And Thickness Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44

634-7-20. Wet Film Thickness Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44

634-7-21. Banana Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45

634-7-22. Electronic DFT Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45

634-7-23. Sketch Of Area Of Work On CVN Flight Deck . . . . . . . . . . . . . . . . . . . . . 7-47

634-7-24. Sketch Of Area Of Work On LHA Flight Deck . . . . . . . . . . . . . . . . . . . . . 7-47

634-7-25. Nonskid Application To RAST Track And Side Plates . . . . . . . . . . . . . . . . . 7-51

634-7-26. Quality Assurance Checklist (Sheet 1 of 9) . . . . . . . . . . . . . . . . . . . . . . . 7-52

634-A-1. Psychrometric Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

634-B-1. DFT Reading Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

634-C-1. Sample Quality Deficiency Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

634-C-2. Sample Request For Engineering Investigation . . . . . . . . . . . . . . . . . . . . . C-6 xi / (xii Blank) xii

CHAPTER 634

DECK COVERINGS

SECTION 1

GENERAL INFORMATION

634-1.1 INTRODUCTION.

634-1.1.1 Scope. This chapter contains information on the installation and maintenance of deck coverings, gratings, and caulking compounds used for sealing deck seams.

634-1.1.2 Requirements. Satisfactory deck coverings for naval ships are lightweight, wear and slip-resistant, nonflammable, possess the ability to protect the deck from corrosion, present an attractive appearance, and are easily maintained. Simple installation and low cost are also important considerations. Since no single material is able to meet all these requirements, each material approved for use is the result of compromise.

634-1.1.2.1 Deck coverings are classified on the basis of use aboard ship. Where a material is restricted to a par-ticular class of ships, this also is indicated. Information on other specialized deck coverings should be obtained from the Naval Sea Systems Command (NAVSEA). Spaces in which no deck covering is installed are to be painted in accordance with instructions in Section 7, Nonskid Deck Coverings.

634-1.2 APPROVAL.

634-1.2.1 New and experimental deck coverings will be approved for evaluation on an individual case basis.

Authorization for the installation of experimental deck coverings must be obtained from NAVSEA. When approval is granted, full installation data, and later follow up reports, will be required.

634-1.2.2 Deck coverings listed herein are specified for ships in service. On ships in service, where weight and moment compensation is required (except for nonskid materials), approval for initial installations only should be requested of NAVSEA via the Type Commanders. Approval for the initial installation on ships in service is issued only after proper weight and moment compensation is established in accordance with existing policies, proce-dures, and instructions.

634-1.3 INSTALLATION CRITERIA.

634-1.3.1 If the existing deck covering is functional it should not be replaced even if it does not agree with the materials listed for the specific space. New deck coverings should be installed only where none are now present, or where existing authorized deck coverings are beyond economical repair. When repairs are required, local repairs should be made, if at all possible, rather than complete removal and reinstallation of a new deck cover-ing. Where replacement is made, the deck covering specified herein should be installed. If a new deck covering is being installed, it shall not be installed over an existing deck covering other than primer or underlayment, except as noted herein.

634-1-1

634-1.4 GENERAL SAFETY PRECAUTIONS.

634-1.4.1 Potential hazards are encountered in most deck covering applications. Therefore, a continuing safety program during installation is mandatory. Adherence to prescribed safety procedures will provide protection against major hazards such as fire, explosion, hazardous dust such as asbestos and crystalline silica, and toxic-ity.

1. Liquids, adhesives, and deck covering compounds that contain volatile flammable solvents evaporate to form vapors which, if not removed or reduced in concentration by adequate ventilation, may form explosive or flammable mixtures. Every precaution shall be taken to ensure the elimination of ignition sources such as open flames from smoking, lighters, welding, and other operations involving sparks that can be generated from electrical equipment. A continuous fire watch shall be maintained during application of these materials to ensure that all safety precautions are observed.

2. Vapors from some of the solvents used may have a harmful or irritating effect on the human system, particu-larly in confined spaces. Proper respiratory and eye protection shall be worn, depending on the application.

Container labels and Material Safety Data sheets (MSDS) shall be read and followed for specific safety instructions concerning flammability and toxicity.

3. Dust created during ripout of existing deck covering materials may present a possible risk of carcinogenicity.

Asbestos, although no longer present in deck covering materials, may exist from installations accomplished prior to 1980. Asbestos is a known carcinogen. Additionally, many deck covering underlay materials, and latex concrete, mastic, terrazzo, and cosmetic polymeric deck coverings contain crystalline silica from the sand or quartz components contained therein. During the removal of deck covering materials it is imperative that dust control measures be implemented. The use of personnel protective equipment, including respiratory protection is required.

634-1.4.2 The following safety precautions are applicable when working with certain materials under the condi-tions specified.

a. Polyester. When using resins, accelerators, catalysts, and flammable solvents for cleaning, all precautions and safety measures pertaining to flammable materials, such as no smoking, welding, or burning in the immedi-ate areas, shall be enforced. The use of rubber gloves during the application of resin and glass cloth is rec-ommended

b. Electric shock prevention. An insulating deck covering is necessary to prevent electric shock to persons who may touch bare energized and ungrounded circuits while standing on bare decks. Although dry wood decks are not conductive, they constitute an electric hazard when wet, and both metal (steel and aluminum) and wood decks require an insulating deck covering. After installation, the decking should be checked at least once annually to ensure that the surface is not cracked, punctured, or perforated, and that no metal or conductive particles have been imbedded. If the decking is not cemented, check several areas with a caliper. Discard and replace if any thickness is less than 1/32 (0.03) inch. With a cemented deck, the thickness should be deter-mined at least annually using a suitable thickness gauge such as one of the magnetic types cited in NSTM S9086-VD-STM-020, Chapter 631; or a pin or needle may be inserted at a seam location (where 2 widths abut) and one depth measured. After test, fill seam with a rubber adhesive. Refer to paragraph 634-3.8 for more detailed information on prevention of electrical shock.

c. Acid resistant deck covering. When lining battery compartments with acid-resistant decking, observe the following precautions.

634-1-2

1. The battery compartment and the platform above it shall be closed off to all trades except for the decking installers.

2. Both bulkhead doors shall be closed, and a fire watch shall be established and maintained during the lin-ing operation.

3. Fire extinguishers (class B) shall be placed near the workmen installing the decking.

4. No smoking, hot work, or grinding shall be permitted in the battery compartment or in the areas near it.

5. No welding nor smoking shall be permitted within a radius of 25 feet around the hatch leading to the bat-tery compartment.

6. No welding shall be performed on either side of any battery-space boundary, including decks, bulkheads and overheads.

7. These precautions shall be emphasized by appropriate signs and enforced by the fire watch.

8. Adequate suction-type forced-draft ventilation shall be provided (minimum 10 air changes per hour).

d. Nonskid coverings. Since all compounds used for installation of nonskid deck covering contain ingredients and/or volatile solvents which may be flammable, adequate safety measures must be taken during application.

1. Certain sensitive individuals handling the materials may develop a skin rash; therefore, gloves shall be worn. Any materials spilled on the body should be wiped off and the skin washed with soap and water. In case of contact with the eyes, flush the eyes immediately with clear water and contact a physician. Cloth-ing and gloves contaminated with the uncured resins shall not be worn again until they have been thor-oughly cleaned. Because some formulations may use materials that fume when in contact with air, adequate exhaust ventilation is necessary in closed spaces. If the proper precautions are taken to ensure cleanliness, ventilation, and protective clothing, no difficulty should be encountered in using or handling epoxy resins, hardeners, or solvents.

2. For interior areas where nonskid materials are rolled, troweled, or sprayed, and for a minimum of 1 hour after the non-skid has cured, the following safety precautions shall be observed:

(a) Ensure absence of ignition source; all welding, smoking, hot work, open flames, energizing and deen-ergizing of electrical circuits in the compartment and adjacent areas shall be prohibited. Only explosion-proof lights shall be used and all portable electrical wiring shall be inspected for cracks and wear prior to use.

(b) Use exhaust ventilation, preferably air-driven to open air, to reduce the solvent vapor concentration below the lower explosive limit. All exhaust ventilation in the area shall be secured and masked; the ventilation supply shall be left open. If it is necessary to use electrical motor-driven exhaust fans, only explosion-proof equipment shall be used. Ground all exhaust ventilation for electrostatic discharge, using approximately AWG20 cable with metal clips for attaching equipment to ground.

(c) Portable dry chemical fire extinguishers shall be readily available.

3. For more detailed information concerning safety of various non-skid materials in use, refer to Section 7, Nonskid Deck Coverings.

e. Polyurethanes. Polyurethane deck-covering compounds including MIL-PRF-24613 Type II (polyurethane) materials, and polyurethane caulking compounds can constitute fire and/or health hazards if improperly handled during application.

634-1.4.3 Health precautions applicable to the aforementioned materials are given as follows:

a. Polyester. When using resins, accelerators, catalysts, and flammable solvents for cleaning, all precautions and

634-1-3 safety measures pertaining to flammable materials, such as no smoking, welding, or burning in the immedi-ate areas, shall be enforced. The use of rubber gloves during the application of resin and glass cloth is rec-ommended

a. Deck Covering Materials, Interior, Cosmetic Polymeric (MIL-PRF-24613). Since many of these products and systems use volatile solvents that may be flammable or injurious to health, safety measures must be implemented during and after application. During the application and for a time thereafter, until the material has cured and all vapors have dissipated, the following safety precautions shall be taken:

1. At-sea application of MIL-PRF-24613 Type II polyurethane deck coatings, except seal coats, in interior spaces shall be limited to repair and touch-up of small areas. Small areas are defined as 1 square yard or less. If there is more than one damaged area per compartment then the total area that can be repaired shall not exceed 2 percent of the total deck area of the space. The 1 square yard per patch per day limit is still in effect. Resealing of the entire compartment deck area is permitted. Epoxy deck coverings in accordance with MIL-PRF-24613 Type I or Type II may be installed, repaired, or resealed if the safety precautions in the following paragraphs are followed.

2. Traffic in the vicinity of the work area shall be restricted to allow only necessary personnel.

3. Maintain exhaust ventilation in continuous operation during the application of the product. A minimum of ten air changes per hour is required. If unable to operate the ventilation or if the existing ventilation is not the exhaust type and does not provide ten air changes per hour, then supplementary ventilation is required.

In addition all workers are required to wear full face organic vapor cartridge respirators. Personnel assigned to wear respirators shall be trained and medically screened to determine their fitness for wear-ing a respirator as directed by OPNAVINST 5100.19B, Navy Occupational Safety and Health (NAVOSH) Program Afloat.

4. All mixing shall be done at the work site. Application shall be by trowel, roller, or brush.

5. The uncured resin and components are flammable and shall be used and stored accordingly.

6. Quantities of uncured components allowed to be carried onboard shall not exceed that amount normally expected to be needed during the at-sea period, and shall be restricted to quart size unbreakable contain-ers.

7. Installation and large scale repair or resurfacing of polyurethane materials, other than reglazing, shall only be accomplished at pier side, or in a shipyard by properly trained and protected personnel at the IMA level or higher, under the direct guidance of the Regional Industrial Hygienist, and observing the safety pre-cautions of NSTM Chapter 631, Volume 2, Preservation of Ships In Service - Surface Preparation and Painting. Epoxy materials may be installed, repaired, and resealed with no limit as long as ventila-tion and personnel protection requirements are met.

8. Skin protection for the hands shall be provided by solvent resistant gloves. For epoxy systems butyl rub-ber gloves are recommended. For polyurethane systems polyvinyl alcohol (PVA) composition gloves are recommended, with alternate materials of either nitrile or chlorinated polyethylene (CPE) being accept-able. Cotton or disposable coveralls shall be worn to prevent contamination of clothing. Promptly remove and launder or dispose of contaminated non-impervious clothing before reuse. In the event of accidental skin contact, wash immediately with soap and water.

9. When a full face respirator is not worn, eye and face protection shall be provided. Splash-proof chemi-cal goggles shall be worn by all personnel handling the materials who are not wearing full face respira-tors. Because of the increased potential for a splash to occur during mixing, it is required that the person doing the mixing wear a face shield in addition to the goggles. In the event of eye contact with the mate-rial, flush the eyes with clean water for fifteen minutes and seek prompt medical attention.

10. Personnel working with these products shall not eat, drink or smoke while handling the product. They shall wash their hands and face thoroughly with soap and water after work is complete and prior to eat-ing, drinking or smoking.

634-1-4

11. The ship’s medical department shall screen personnel for pre-existing rashes, eczema, or other skin dis-eases. Personnel with skin disease shall not be assigned to handle these materials.

12. All personnel who will be working with the polyurethane (Type II) materials shall be required to com-plete a medical and work history questionnaire for review by the ship’s medical department representa-tive. Personnel with a prior history of sensitization to isocyanates shall not be assigned to handle this product.

b. Polysulfide Caulking Compounds, Lead Peroxide, and Solvents. Adequate fire and safety precautions must be taken with solvents and primers because they are flammable and hazardous to health if used in confined spaces without adequate ventilation.