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S9086-VD-STM-0100901-LP-102-4136REVISION 3NAVAL SHIPS’ TECHNICAL MANUALCHAPTER 631PRESERVATION OF SHIPS INSERVICE - GENERALDISTRIBUTION STATEMENT C: DISTRIBUTION AUTHORIZED TO U.S. GOVERNMENTAGENCIES AND THEIR CONTRACTORS; ADMINISTRATIVE AND OPERATIONAL USE(11 NOV). OTHER REQUESTS FOR THIS DOCUMENT WILL BE REFERRED TOTHE NAVAL SEA SYSTEMS COMMAND 05P23.WARNING: THIS DOCUMENT CONTAINS TECHNICAL DATA WHOSE EXPORT ISRESTRICTED BY THE ARMS EXPORT CONTROL ACT (TITLE 22, U.S.C., SEC. 2751, ETSEQ.) OR EXECUTIVE ORDER 12470. VIOLATIONS OF THESE EXPORT LAWS ARESUBJECT TO SEVERE CRIMINAL PENALTIES. DISSEMINATE IN ACCORDANCE WITHPROVISIONS OF OPNAVINST 5510.161, REFERENCE (JJ).DESTRUCTION NOTICE: DESTROY BY ANY METHOD THAT WILL PREVENT DISCLOSURE OF CONTENTS OR RECONSTRUCTION OF THE DOCUMENT.THIS CHAPTER SUPERSEDES CHAPTER 631 VOLUME 1 Rev 2, VOLUME 2 Rev 1,VOLUME 3 Rev 2.PUBLISHED BY DIRECTION OF COMMANDER, NAVAL SEA SYSTEMS COMMAND.1 NOV TITLE-1 / (TITLE-2 @@

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S9086-VD-STM-010REVISION RECORDREVISION NO.DATETITLE AND/OR BRIEF DESCRIPTION/PREPARING ACTIVITY31 NOV SEE DESCRIPTION BELOW. ALL CHANGES PREPARED BY NSWCCD-SSES CODE 614. GENERAL: REPLACED ALL REFERENCES TO SPAR VARNISH PER TT-V-119 WITH MASTER PAINTERSINSTITUTE (MPI) REFERENCE COATING #28. GENERAL: STANDARDIZED ON USE OF TWO COATS OF TT-P-645 FORMULA 84 WHEREVER SPECIFIED,VS. A MIX OF REQUIREMENTS FOR SYSTEMS USING 1 OR 2 COATS. GENERAL: DELETE REFERENCES TO FORMULA 25A PAINTS AS UNIQUE, SPECIFIC PAINTS, SINCE THEYARE NOW COVERED UNDER MIL-PRF-24596. GENERAL: DELETED TEXT, TABLE LINES PERTAINING TO DECOMMISSIONED SUBMARINES. GENERAL: LAYOUT CHANGES TO IMPROVE PLACEMENT AND ORGANIZATION OF TABLES, TABLENOTES, AND FIGURES. TYPOGRAPHICAL ERROR CORRECTIONS. UPDATE OF MILITARY SPECIFICATIONDESIGNATIONS (E.G. MIL-P-24441 CHANGED TO MIL-DTL-24441). GENERAL: LANGUAGE REVISION TO CLARIFY REQUIREMENTS VS. GUIDANCE. (REF. TMDER A0000004-0225) ADDITIONAL CHANGES WILL BE MADE IN NEXT REVISION. GENERAL: UPDATED COMPANY SOURCE OF SUPPLY INFORMATION, NSNS FOR A VARIETY OF PRODUCTS. GENERAL: UPDATED SPECIFICATIONS P-D-680 DRY CLEANING SOLVENT AND TT-P-291 PAINT THINNERTO MIL-PRF-680 DEGREASING SOLVENT AND ASTM D235 TYPE I MINERAL SPIRITS. GENERAL: DELETED REFERENCE TO SNAME TECHNICAL AND RESEARCH BULLETIN NO. 4-21, ABRASIVE BLASTING GUIDE FOR AGED OR COATED STEEL SURFACES AS A VISUAL STANDARD FOR PREVIOUSLY PAINTED STEEL, SINCE SSPC-VIS 1 HAS BEEN MODIFIED TO INCLUDE EQUIVALENT PHOTOS. GENERAL: PROHIBITED USE OF METHYLENE CHLORIDE PRODUCTS. GENERAL: DUE TO ISSUE OF REV. H OF TT-P-28 HEAT RESISTANT PAINT TO INCLUDE TWO TYPES(TYPE I CONVENTIONAL PAINT AND TYPE II POWDER COATING), FOR MOST REFERENCES TO THISSPECIFICATION, DISTINGUISHED BETWEEN TYPE I VS. TYPE II WHERE APPROPRIATE. PARAGRAPH 631-1.1.1: ADDED TEXT DESCRIBING MANDATORY REQUIREMENTS VS. GUIDANCE. PARAGRAPH 631-1.1.2: ADDED NEW PARAGRAPH GIVING AN OVERVIEW OF THE ORGANIZATION OFTHE SECTIONS IN THIS NSTM. PARAGRAPH 631-1.3 (OLD): DELETED THIS PARAGRAPH CITING OBSOLETE TRAINING FILM. PARAGRAPH 631-1.3 (NEW): COMPLETELY REVISED OLD PARA. 1.4 THAT CONTAINED “GUIDELINES”AND MADE THIS A REQUIREMENTS PARAGRAPH. INCLUDED DEFINITIONS OF VARIOUS SCOPES OFWORK FOR PAINTING, TAKEN FROM STD. ITEM 009-32, AND WAIVED THE QA DOCUMENTATIONREQUIREMENTS FOR DEFINED “TOUCH-UP” AREAS ON SURFACE SHIPS AND AIRCRAFT CARRIERS.SEPARATE TOUCH-UP DEFINITIONS APPLY TO SUBMARINES, WITH SEPARATE QA DOCUMENTATIONREQUIREMENTS. ADDED NEW PARAGRAPHS DEFINING COSMETIC PAINTING, AND ASSOCIATED DECISION FACTORS. ADDED REQUIREMENTS FOR COATING CONDITION ASSESSMENTS IN ORDER TO MAKEREPAIR/REPLACE DECISIONS. ADDED INSPECTION PERIODICITIES FOR CRITICAL COATED AREAS, ANDFOR TANKS AND VOIDS, INVOKED USE OF CCIMS FOR RETENTION OF INSPECTION DATA AND COATING REPAIR/REPLACE PROTOCOLS. INVOKED USE OF 009-32 FOR PERFORMANCE OF CONTRACTEDCOATING WORK. INVOKED USE OF ASTM F718 DATA SHEETS. INVOKED USE OF CCIMS TECHNICALPUBLICATION FOR COATING ASSESSMENTS. ADDED SUB-PARAGRAPH ON FED-STD-595 COLOR NUMBERS. PARAGRAPH 631-1.5: ADDED PARAGRAPH DESCRIBING NAVSEA COGNIZANT TECHNICAL AUTHORITY(CTA) ROLE AND RESPONSIBILITY. DELETED ALL OTHER REFERENCES THROUGH ALL SECTIONS OFTHIS MANUAL TO NAVSSES (NSWCCD-SSES) AND NRL. PARAGRAPH 631-1.6: NEW PARAGRAPH ADDED DESCRIBING THE DOD ″CORROSION PREVENTION ANDCONTROL PROGRAM″ POLICY AND RESOURCES.REVISION RECORD-1

S9086-VD-STM-010REVISION RECORD - CONTINUEDREVISION NO.DATETITLE AND/OR BRIEF DESCRIPTION/PREPARING ACTIVITY TABLE 631-1-1: UPDATED AND ADDED SSPC, ASTM AND NACE REFERENCES, AND SSPC AND NACEADDRESSES. ADDED OR DELETED SEVERAL OTHER REFERENCES AS REFLECTED THROUGHOUT THEMANUAL. TABLES 631-1-2, 631-1-3, 631-1-4: CHANGES TO TABLE HEADERS AND VARIETY OF CHANGES TOTABLES AND COATING SYSTEM NOTES TO REFLECT NEW COATINGS AND CHANGES IN COATINGPOLICY, TO COMPLEMENT CHANGES MADE IN SECTION 8. TABLE 631-1-3 (PAINTING INTERIOR OFSHIPS) REVISED TO SEPARATE SHIP STRUCTURE FROM MACHINERY AND EQUIPMENT. NEW TABLE631-1-4 ADDED TO PROVIDE A SINGLE COATING SCHEDULE FOR SHIPS, TO ACCOMPANY TABLES631-1-2 AND 631-1-3. TABLES 631-1-5 AND 631-1-6: REVISED LAYOUT AND RENUMBERED TABLES 631-1-4 AND 631-1-5 FORSUBMARINES. UPDATED COATINGS TO REFLECT 009-32 FY08. ADDED NEW LINES AND COATING SYSTEMS FOR PAINTING OF SUBMARINE BOW DOMES; SEE ALSO PARAGRAPH 631-8.15.2. TABLE 631-1-6: DELETED LINES, COATING SYSTEMS PERTAINING TO DECOMMISSIONED SUBMARINECLASSES. DELETED COATING SYSTEM NUMBERS 18-20 AND 22-26 AS THEY ARE NO LONGER REFERENCED IN THE TABLE. CHANGED COATING SYSTEM NUMBER 21 TO 18. UPDATED COATING SYSTEM 6FOR POTABLE WATER, RESERVE FEEDWATER, AND FRESH WATER DRAIN COLLECTING TANKS. ALL REFERENCES TO NAVSSES CHANGED TO NAVSEA PER ACCOMPANYING CHANGE REGARDINGTECHNICAL AUTHORITY IN 631-1.6. SECTION 2: IN ADDITION TO THE SPECIFIC CHANGES DESCRIBED BELOW, EXTENSIVE REVISIONS TOINCORPORATE CHANGES RECOMMENDED BY THE NAVAL ENVIRONMENTAL HEALTH CENTER (NEHC)18 July, ENDORSED BY BUMED 31 July. THESE CHANGES ALSO SUBSTANTIALLY REORGANIZED THE ORDER OF MATERIAL IN SECTION 2, AND AS A RESULT, MANY OF THESE CHANGES ARENOT MARKED WITH CHANGE BARS, AND PARAGRAPH NUMBERING HAS CHANGED. TABLE 631-2-2 VENTURI EXHAUST BLOWERS: DELETED TABLE. SECTION 2: PROHIBITED USE OF METHYLENE CHLORIDE, CRESOL, AND PHENOL PRODUCTS. REVISEDTO PROHIBIT ALL USE OF CHEMICAL PAINT STRIPPERS AND REMOVERS UNLESS SPECIFIC APPROVALIS GRANTED. SECTION 2: ADDED SAFETY PRECAUTIONS FOR USING WATER-BASED PAINTS. SECTION 2: REVISED HEALTH AND SAFETY REQUIREMENTS CONCERNING POLYURETHANE COATINGS. SECTION 2: REFERENCES TO ORGANTIN ANTI-FOULING PAINTS REMOVED THROUGHOUT THE DOCUMENT, AS THEY ARE NO LONGER PERMITTED IN THE U.S. BRIEF PARAGRAPH IN 631-2.8.3 STATING THETBT PROHIBITION REMAINS. SECTION 2: DELETED REQUIREMENT TO TEST INDIVIDUAL PAINT LAYERS FOR CHROMATES ANDLEAD UPON PAINT REMOVAL. PARAGRAPH 631-2.7.7: EDITED TO ADDRESS PLURAL COMPONENT SPRAYING SAFETY PRECAUTIONSALONG WITH AIRLESS SPRAYING. PARAGRAPH 631-3.2.9: MATERIAL ON METAL SPRAYED COATINGS MOVED TO 631-7.6 AND INTEGRATED WITH EXISTING MATERIAL THERE. PARAGRAPH 631-3.3: COMPLETELY REVISED SECTION ON DFT AND WFT GAGES AND REQUIREMENTS.DELETED FIGURES 631-3.2 THROUGH 631-3-4 AND TABLES 631-3-2 THROUGH 631-3-4. ADDED TEXT TOINVOKE SSPC-PA 2 FOR DFT MEASUREMENTS, AND SPECIAL SITUATIONS FOR NON-MAGNETIC ANDNON-METALLIC SUBSTRATES. ADDED NEW PARAGRAPH ON ESTIMATING DFT FROM WFT MEASUREMENTS. (REFER TO SECTION 631-7.1.4 FOR NEW/REVISED DFT AND WFT QA REQUIREMENTS.) PARAGRAPH 631-3.4.2: UPDATED CONTENT, AND REPLACED PARAGRAPH 631-3.4.2.1 WITH A BRIEFDESCRIPTION OF THE SHIPS HAZARDOUS MATERIAL LIST (SHML). MOVED CONTENT OF OLD PARAGRAPH 631-8.5 (NAVSEA-APPROVED COATINGS FROM PROPRIETARY SOURCES) TO HERE, AS THIS IS AMORE APPROPRIATE LOCATION.REVISION RECORD-2

S9086-VD-STM-010REVISION RECORD - CONTINUEDREVISION NO.DATETITLE AND/OR BRIEF DESCRIPTION/PREPARING ACTIVITY PARAGRAPH 631-3.4.3: INSERTED NEW PARAGRAPH REGARDING RECEIPT INSPECTION OF COATINGSFOR NON-CRITICAL COATED AREAS. FOR CRITICAL COATED AREAS, REFERRED TO SECTION 11. PARAGRAPH 631-3.4.5: ADDED TEXT TO INDICATE PAINT STOREROOMS MUST PREVENT EXPOSURE TOFREEZING CONDITIONS AND EXPOSURE TO DIRECT SUNLIGHT. ADDED REQUIREMENT THAT EXPIREDPAINT MUST BE SEGREGATED FROM UNEXPIRED PAINT IN STORAGE FACILITY. TABLE 631-3-2: DELETED OBSOLETE FORMULA NUMBERS 34, 109, AND 120. ADDED LINE FOR FORMULA 20L. DELETED VINYL AF PAINTS FORMULAS 121A AND 129A. ADDED AND UPDATED NSNS FORSEVERAL PAINTS. TABLE 631-3-3: ADDED ALTERNATE ANTI-SWEAT COATING, AND INFORMATION ON HIGHTEMPERATURE PAINT PER TT-P-28. DELETED OR EDITED OBSOLETE NSN’S AND SPECIFICATIONS.ADDED COLORS AND NSN’S FOR MIL-PRF-24635 GLOSS, SEMI-GLOSS, AND LOW GLOSS PAINTS. ADDEDMIL-PRF-24763 WATER-BASED ACRYLIC ENAMELS. ADDED MIL-PRF-24596 NON-FLAMING PAINTS.DELETED INTUMESCENT COATING MIL-PRF-46081. EDITED POWDER COATING SPECIFICATIONS, TYPES,AND CLASSES. PARAGRAPH 631-3.4.9: NEW PARAGRAPH ADDED TO DESCRIBE MILITARY AND FEDERAL, AND PRFAND DTL SPECIFICATIONS. PARAGRAPH 631-3.4.9.1: NEW PARAGRAPH ADDED TO DESCRIBE ASSIST ONLINE QUALIFIED PRODUCTS DATABASE (QPD). PARAGRAPH 631-3.4.10.1: ADDED NEW PARAGRAPH ON REGULATORY NESHAP VOC LIMITS FORMARINE COATINGS. TABLE 631-3-5: ADDED NEW TABLE GIVING NESHAP VOC LIMITS FOR MARINE COATINGS BY USAGECATEGORY. TABLE 631-3-6: ADDED NEW TABLE GIVING VOC LIMITS OF COMMON NAVAL VESSEL COATINGSPECIFICATIONS. SECTION 4: CONTENT OF SECTION 4 WAS DELETED AND MOVED TO NSTM 079, VOLUME III. PARAGRAPH 631-5.2.1: REPLACED REFERENCE TO MIL-STD-271 WITH NAVSEA T9074-AS-GIB-010/271. PARAGRAPH 631-5.2.2: REVISED TO DISCUSS PRE-SURFACE PREPARATION REQUIREMENTS FOR CRITICAL COATED AREAS REGARDING SURFACE FINISHING OF WELDS AND USE OF VISUAL COMPARATOR/REPLICA FOR WELD EVALUATION; BREAKING OF EDGES; AND LOW PRESSURE FRESH WATERWASHING TO REMOVE RESIDUAL SALTS PRIOR TO SURFACE PREPARATION FOR PAINTING. NEW PARAGRAPH CONTAINS INFORMATION PREVIOUSLY IN 631-5.2.4.1.1. TEXT THAT WAS HERE SPECIFIC TOUNDERWATER HULL COATING MOVED TO 631-8.4. PARAGRAPHS 631-5.2.3.2.1 AND 5.2.3.2.2: DELETED THESE PARAGRAPHS CONCERNING CONDITIONBASED REPLACEMENT OF COATINGS AND BLISTER CRITERIA FOR WARM WATER TANKS. THIS TYPEOF EVALUATION AND CRITERIA IS COVERED BY NEW PARAGRAPHS IN 631-1.3. PARAGRAPH 631-5.2.3.3: TEXT AND NOTE REGARDING OVER-COATING OF ABLATIVE COPPER AF HULLCOATINGS MOVED TO PARAGRAPH 631-8.4 FOR CLARITY. PARAGRAPH 631-5.2.3.4: DELETED THIS PARAGRAPH DESCRIBING USE OF SOLVENT WIPING OR COMPRESSED AIR BLOW-DOWN IN ORDER TO PAINT DAMP EXTERIOR SURFACES, AS THESE PRACTICESARE NO LONGER RECOMMENDED, AND HAVE NEGATIVE AIR POLLUTION AND SAFETY IMPLICATIONS. TABLE 631-5-1: DELETED TABLE ON REPAIR OF CORRODED ALUMINUM AND STEEL STRUCTURE, ASIT WAS GENERAL, NON-BINDING GUIDANCE, AND REQUIREMENTS ARE SET IN OTHER DOCUMENTS,SUCH AS NSTM CHAPTER 100 AND GSO. PARAGRAPH 631-5.2.4.1: CLEARLY STATED REQUIREMENT FOR SURFACE PROFILE ON STEEL SURFACES AS 2-4 MILS.REVISION RECORD-3

S9086-VD-STM-010REVISION RECORD - CONTINUEDREVISION NO.DATETITLE AND/OR BRIEF DESCRIPTION/PREPARING ACTIVITY PARAGRAPH 631-5.2.4.1.1: PARAGRAPH DELETED, AND CONTENTS SPLIT AND MOVED TO 3 DIFFERENTLOCATIONS IN ORDER TO IMPROVE LOGICAL FLOW AND APPLICABILITY OF REQUIREMENTS.SOLUBLE SALT CONDUCTIVITY TEST METHOD AND CRITERIA MOVED TO SECTION 5.14 (SURFACEPREPARATION QA). WATER WASHING REQUIREMENTS FOR CRITICAL SURFACES MOVED TO 631-5.2.2.TEXT REGARDING ABRASIVE BLAST FACILITY COMPLIANCE MOVED TO NEW PARAGRAPH 631-5.2.4.1.3.DELETED RULE OF THUMB REGARDING SURFACE PROFILE REQUIREMENTS. PARAGRAPH 631-5.2.4.1.4 (OLD): PARAGRAPH DEALING WITH SPECIAL PRE-SURFACE PREPARATIONCLEANING OF WELL DECKS MOVED TO 631-8.18.2. 631-8.23.2. PARAGRAPH 631-5.2.5.3: REVISED SURFACE PREPARATION OF WOOD SURFACES TO ALLOW BRUSHOFF ABRASIVE BLASTING AND HIGH PRESSURE WATER CLEANING. PARAGRAPH 631-5.2.6: REVISED TERM ″PLASTIC SURFACES″ TO ADDRESS GRP, FIBERGLASS AND NONMETALLIC COMPOSITE SURFACES. PARAGRAPH 631-5.3.1: ADDED TEXT TO EMPHASIZE THAT USE OF ALL OTHER SSPC SURFACE PREPARATIONS STANDARDS REQUIRES SOLVENT CLEANING PER SSPC-SP 1 AS THE INITIAL STEP. PARAGRAPH 631-5.3.3: CLARIFIED THAT MINIMUM REQUIRED PROFILE WHEN SSPC-SP 11 IS SPECIFIEDIS 2.0 MILS. PARAGRAPH 631-5.3.3.1: ADDED NEW PARAGRAPH REQUIRING SOLVENT CLEANING PRIOR TO POWERTOOL CLEANING, AND AGAIN AFTER POWER TOOL CLEANING, IF NECESSARY. PARAGRAPH 631-5.3.3.2: STRENGTHENED REQUIREMENT TO PROHIBIT POLISHING OF METAL SURFACES WHEN USING POWER TOOL CLEANING, AND REQUIRED PROFILING USING NEEDLE GUNS IFPOLISHING HAS OCCURRED. PARAGRAPH 631-5.3.3.3: ADDED GUIDANCE ON USE OF POWER TOOLS. ADDED NOTE THAT 2 MMNEEDLES FOR NEEDLE GUNS CAN PRODUCE ACCEPTABLE PROFILE. PARAGRAPH 631-5.3.4: ADDED NEW PARAGRAPH TO ALLOW USE OF SSPC-VIS 3 STANDARDS TOASSESS CLEANLINESS OF HAND AND POWER TOOL CLEANED STEEL SURFACES. PARAGRAPH 631-5.3.5: ADDED NEW PARAGRAPH OPTIONALLY ALLOWING THE USE OF SSPC-SP 6 ORSSPC-SP-12 WJ-2L INSTEAD OF SSPC-SP 11 WHEN POWER TOOL CLEANING IS SPECIFIED. PARAGRAPH 631-5.3.6: NEW SECTION AND TABLE 631-5-2 ADDED TO DESCRIBE THE USE OF RUSTCONVERTERS. PARAGRAPH 631-5.4.1: DELETED REFERENCE TO USE OF INHIBITORS WHEN WET BLASTING. PARAGRAPH 631-5.4.3: ADDED MATERIAL TO DESCRIBE USE OF ALUMINUM OXIDE, GARNET, ANDWALNUT SHELL ABRASIVES. ADDED NEW PARAGRAPH 631-5.4.3.1 TO DESCRIBE DEGREASINGREQUIRED WHEN ANY AGRICULTURAL MEDIA HAVE BEEN USED. PARAGRAPH 631-5.4.3.2: ADDED NEW PARAGRAPH ALLOWING THE USE OF ABRASIVE SPONGE MEDIAFOR ABRASIVE BLASTING. PARAGRAPH 631-5.4.4: ADDED ALLOWANCE TO PROCURE STEEL SHOT AND GRIT ABRASIVES PERSSPC-AB 3, AND WALNUT SHELL ABRASIVES PER A-A-1722. ADDED REQUIREMENT THAT RECYCLEDABRASIVES COMPLY WITH SSPC-AB 2. PARAGRAPH 631-5.4.5: DELETED WARNING AND NOTE CONCERNING USE OF BLASTOX IN ABRASIVEBLAST MEDIA. ADDE