Chemical Hand Protection Training - PowerPoint Presentation

Chemical Hand Protection TrainingGuidance for Shipboard Maintenance Personnel, Work-Center Supervisors, Safety Officers, Hazardous Material Coordinators and Medical Department Personnel Training Developed by the Navy PPE Working Group and Naval Safety Center Last Updated: 05 March 2013

Objectives:This presentation is designed to Provide essential information on chemical resistant gloves for:Maintenance personnelWork Center SupervisorsSafety OfficersHazardous Materials CoordinatorsMedical Department RepresentativesCorrect common misunderstandings and ineffective use of chemical resistant gloves

Navy PPE Training RequirementsOPNAVINST 5100.23G, paragraph 2013(a)Activities shall provide training to each employee who is required to use PPE to include at least the following:(1) When PPE is necessary(2) What PPE is necessary(3) How to properly don, doff, adjust and wear PPE(4) The limitations of the PPE(5) The proper care, maintenance, useful life, storage and disposal of the PPE(6) Ability to recognize that defective or damaged PPE shall not be usedOPNAVINST 5100.19E, paragraph B1202(c)Division officers shall ensure that assigned personnel are adequately trained on the type and proper use of PPE required at their work stations…

How to Use This TrainingBe sure to review the instructor notes contained within this training as they provide important additional detailsThe most current version of this training can be downloaded fromNaval Safety Center’s Safety Officer Training Materials webpage (see Notes)NAVSEA’s Maritime DC and PPE Information Center (see Notes)

First Things FirstBefore working with chemicals, always check Maintenance Requirement Card (MRC)The product Material Safety Data Sheet (MSDS)/Safety Data Sheets (SDS)The command Industrial Hygiene (IH) survey reportReceive training on applicable PPE

PPE Should Be the Last Resort!Problems with PPEIt can failSailor can forget to wear itIt can be worn improperlyCan the Sailor be protected by other means (see notes)?SubstitutionEngineering ControlsAdministrative ControlsIf the above controls are not feasible or not protective enough, then PPE is appropriate

Hand Protection and GlovesMany different types of glovesChemical resistantHeat resistantCold resistantCut resistant (Kevlar)Electrical insulatingWe will concentrate on chemical protective gloves in this training

Hand Protection- GlovesObjective is protection from chemical hazardsChemical burns Absorption through skinLocal effects Cracking, drying, dermatitisSystemic effectsKidney, liver, central nervous system, cancer

IMPORTANT!!No glove is good for all hazards!!!You must know what you’re working with and have a glove made from the appropriate protective materialSome gloves may provide great protection against some chemicals, but provide poor protection from othersThickness (mils) plays a part as wellA “mil” is a thousandth of an inch

Just How Important Can It Be?Dartmouth University Example (link in notes section)PhD Research ChemistDimethylmercury exposureJust a few drops on surgical latex glove (15 sec exposure)Within 5-6 months symptoms included:Tremors (mouth, tongue, face, head), memory loss, tunnel vision, fatigue, weaknessCondition continued to worsen Coma 6 months post-exposure Death 10 months post-exposure

GlovesManufacturers make chemical protective gloves from many different materialsNitrileNeopreneButyl (synthetic) rubberPolyvinyl Chloride (PVC)Natural latex rubberMulti-layer laminate Polyvinyl alcohol (PVA)Viton® rubber… and several othersHow do we know which to choose?

NSTM 670 Vol. 2Hazardous Materials User’s Guide (HMUG)Contains PPE recommendations and information for 20 chemical groupsEye and face protectionGlovesClothingFoot protectionRespiratory protectionPreviously was OPNAVINST 5100.28HMUG was incorporated into NSTM 670 in June 2012

Chemical Hand Protection Selection MatrixThe Navy PPE Working Group developed a Chemical Protective Glove matrix based on the NSTM 670 Hazardous Material User’s Guide (HMUG)If the Maintenance Requirement Card (MRC) required glove is unavailable, the matrix helps maintenance personnel and their supervisors select a good alternative

Chemical Protective Glove Matrix“The Matrix” contains helpful informationInstructions on how the matrix should be usedPhotos of various glove typesNAVSEA’s Standard PMS Item Name (SPIN)National Stock Number (NSN) information Comparison of protection capabilities of various glove types against many common chemical hazards The matrix can be downloaded fromNaval Safety Center Personal Protective Equipment webpage (see Notes)NAVSEA’s Maritime DC and PPE Information Center (see Notes)

Hand Protection General Selection ProcedureIdentify the hazard(s) of the material you will be working withReview references (MRC, MSDS/SDS, etc.)Determine if you will have “incidental” or “extended” contact“Incidental” A few splashes or minimal contactGloves removed soon after exposure“Extended”Immersion in liquid or many splashesChemical remains on gloves for a long period of time

Hand Protection General Selection ProcedureIncidental contactThin, disposable nitrile gloves provide adequate protection against some chemicalsRecommend changing glove if it gets contaminated with chemicalCross-check with the Chemical Protective Glove matrixExtended contactThicker gloves of the appropriate material are generally requiredCross-check Chemical Protective Glove matrix

Chemical Protective GlovesManufacturers test gloves to determine which provide best protection against specific chemicalsTesting includes factors such as:How long chemical takes to “break through” gloveDamage to glove material caused by the chemicalHow quickly the chemical permeates through gloveWhen in doubt about which glove to use:Recommend use of a nitrile or neoprene gloveMulti-layer gloves also provide excellent protection from most chemicals but can be punctured/torn easily and can feel awkward unless used with a thin, nitrile glove on top

Verify Proper Glove SelectionProper chemical protective glove selection should always be verified* byWork Center SupervisorsCommand Safety Officers and/or the Hazardous Materials Coordinator*See OPNAVINST 5100.19E, paragraph B1203(c)(3)

Let’s Run Through a Few Scenarios

Example #1- Corrosion PreventionSuppose a maintenance task requires the use of Corrosion Preventive Compound (SPIN #00322)Maintenance task involves brushing corrosion prevention compound on partsSuppose the risk of hand exposure is low (incidental splash potential)Which glove provides the appropriate protection?

Example #1- Corrosion PreventionStep #1: Determine specific composition of the corrosion prevention compoundMSDS/SDS indicates aliphatic mineral spirits (petroleum distillates) and several chlorofluorocarbon (CFC) propellantsStep #2: Assess the potential exposure riskMaintenance task involves no immersion of hands in material, but there is some risk of incidental splashes

Example #1- Corrosion PreventionStep #3: Review Pertinent ResourcesDetermine HMUG group and check HMUG recommendationCorrosion Preventive Compounds = HMUG Group #15HMUG Group #15 recommends “Rubber Gloves” This is vague… there are several different types of rubberCross-check glove recommendation in product MSDS/SDSMSDS/SDS recommends “Oil Impervious” (also vague!) gloves

Example #1- Corrosion PreventionStep #3 (cont’d): Cross-check aliphatic mineral spirits (petroleum distillates) against Chemical Protective Glove MatrixClick on “More Info” in Group #15Scroll down to “Petroleum Distillates”Select appropriate glove typeMulti-layer laminate- ExcellentNitrile- Very Good Neoprene- GoodNatural latex- Not RecommendedButyl Rubber- Not Recommended

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Example #1- Corrosion PreventionStep #4: Worker Performance and ComfortSuppose this maintenance involves manipulating small screws and other parts, so a relatively high level of dexterity is neededResultsAt the time of this writing, Multi-Layer Laminate gloves are relatively uncommon though they are very protectiveHowever, they would be overkill since the task has a low exposure risk (incidental splash)Nitrile is a good choiceDue to low exposure risk, thin (4 mil or 8 mil), disposable nitrile gloves are a good choice

Example #1- Corrosion PreventionThe final Step is for Work Center Supervisor and Safety Officer or Hazardous Materials Coordinator to verify that thin, disposable nitrile gloves are the appropriate alternative to the chemical protective gloves required by the MRC

Example #2- TolueneSuppose an MRC requires the use of Toluene, Technical Grade (SPIN #01391)Suppose this maintenance task involves high risk of contact with toluene (immersion)Which glove provides the appropriate protection?

Example #2- TolueneStep #1: Determine specific composition of compoundMSDS indicates that toluene (an aromatic hydrocarbon) is the only component of productStep #2: Assess the Potential Exposure RiskSuppose maintenance task involves partial immersion of hands in material

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Example #2- TolueneStep #3: Review Pertinent ResourcesDetermine HMUG group and check HMUG recommendationToluene is a Solvent = HMUG Group #9HMUG Group #9 recommends “Solvent-Resistant” GlovesAgain, very vague… which glove is best depends on which solvent is usedCross-check glove recommendation in product MSDSMSDS/SDS recommends “Use Gloves” (vague!)Neither of these recommendations is very specific… we need to keep investigating

Example #2- TolueneStep #3 (cont’d): Cross-check Toluene against Chemical Protective Glove MatrixClick on “More Info” in Group #9Scroll down to “Toluene”Select appropriate glove typeMulti-layer laminate- ExcellentNitrile- FairNeoprene- FairNatural latex- Not RecommendedButyl Rubber- Not Recommended

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Example #2- TolueneStep #4: Worker Performance and ComfortSuppose this maintenance task doesn’t involve small screws or other parts so a high degree of dexterity is not requiredResultsMulti-layer laminate, nitrile, and neoprene are options in this exampleAgain, at the time of this writing, Multi-Layer Laminate gloves are relatively uncommon though they are very protective in tasks with high risk of chemical contact and so would make a good choice for this task, if availableNitrile and neoprene are also options since they provide fair protection. However, since the task involves a high risk of contact with the chemical, it’s best to select a thicker version of the glove (13 mil) rather than a thinner version (such as the thin (4 or 8 mil) disposable nitrile) as in the last example

Example #2- TolueneThe final Step is for Work Center Supervisor and Safety Officer or Hazardous Materials Coordinator to verify that thicker nitrile gloves (13 mil green Otto Fuel gloves, for example) are the appropriate alternative to the chemical protective gloves required by the MRC

Example #3: Multiple ComponentsWhat if we have a chemical product with several different chemical components?For example, suppose a paint is comprised of paint solids dissolved in a mixture of solvents?

Example #3- Multiple ComponentsStep #1: Determine specific composition of compoundMSDS indicates that the paint solids are dissolved in a mixture of n-butyl alcohol, xylene, and toluene solventsStep #2: Assess Exposure RiskMaintenance task involves brush/roller application with only an incidental splash exposure hazard

Example #3- Multiple ComponentsStep #3: Worker Performance and ComfortBrush and roller painting doesn’t require a high degree of dexterityHowever, the exposure risk is low so there’s no need to burden the maintenance person with an overly thick glove

Example #3- Multiple ComponentsStep #3: Review Pertinent ResourcesDetermine HMUG group and check HMUG recommendationHaze Gray paint is a “Paint Material”= HMUG Group #8Cross-check glove recommendation in product MSDSSuppose the MSDS recommends use of “Protective Gloves”

Example #3- Multiple ComponentsStep #3, cont’d: Cross-check n-butyl alcohol, xylene, and toluene against Chemical Protective Glove MatrixClick on “More Info” in Group #8Scroll down to appropriate rowsThere is no “n-butyl alcohol” listed!But a Google search indicates that a synonym for n-butyl alcohol is “Butyl alcohol” (which is listed)

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Example #3: Multiple ComponentsChemical Protection by Glove TypeSolvent ComponentNitrileNeopreneNatural Latex RubberButyl Rubber Multi-layer Laminate n-butyl alcohol Very Good Very Good Very Good Very Good Excellent Xylene Fair Poor Poor Poor Excellent Toluene Fair Fair Poor Poor Excellent

Example #3- Multiple ComponentsResultsThe table in this example shows:Multi-layer laminate provides the best protection against the three solvents. All gloves provide good protection from n-butyl alcoholNeoprene, butyl rubber, and natural latex rubber provide poor protection from at least one solvent in the mixtureNitrile provides Fair to Very Good protection against all of the solventsNitrile and the Multi-Layer Laminate provide the best protectionThe Multi-Layer Laminate is relatively uncomfortable and is overkill for the application since the likely exposure hazard is lowNitrile is probably the best option. For this application (where only minimal contact is likely), a thin (4 or 8 mil) disposable nitrile would be appropriate

Example #3- Multiple ComponentsThe final Step is for Work Center Supervisor and Safety Officer or Hazardous Materials Coordinator to verify that the thin, disposable nitrile gloves are an appropriate alternative to the chemical protective gloves required by the MRC

What if…What if neither the HMUG, MSDS, or Chemical Protective Glove matrix gives good guidance on the best glove?Support StructureCommand Safety OfficerCommand Hazardous Materials Coordinator Supporting Industrial Hygiene officeChemical protective glove manufacturers

What Else is Important to Know?Proper glove maintenance!Gloves don’t last forever!Damage to gloves can and DOES occur and can affect thePermeationDegradationAlways “pre-flight” the gloves to check for damage before wearingAlways wash your hands after glove use

Checking Gloves Before UseCheck for holesStep 1: Hold the glove by the cuff and “flip” it several times to trap air insideStep 2: Hold the glove near your face while gently squeezing the glove. If you feel air hitting your face the glove may have a hole and could need replacingStep 3: If no air is felt then glove likely does not have a hole. Move to next slide.

Check for Glove DamageDispose of gloves if you seeDiscolored areasSticky, gummy areasFingers sticking togetherPinholes, tears, or blisters in the glove materialAreas where the glove texture has changed or rubbed offCracks where glove was folded over itselfAreas where chemicals, oils/grease have dried onto the glove

Chemical Protective Glove Types

Nitrile “Otto Fuel” Gloves“Nitrile” is a type of synthetic rubberProvides good protection against solvents, oils, hydraulic fluids, dilute acids/basesAlso known as “Gloves, Chemical and Oil Resistant, Disposable”A common glove recommended for onboard maintenanceGloves should be discarded if exposed to OTTO fuel

Nitrile “OTTO Fuel” Chemical Resistant Gloves

NeopreneNeoprene is another type of synthetic rubberProvides wide range of protection against chemicals in several groupsOrganic solventsOilsPeroxidesFuelsHydrocarbonsAlcoholsAcid/bases

Neoprene Chemical Resistant GlovesThese are stock photos of neoprene gloves from various manufacturers. Display does not constitute endorsement of a particular product.

Butyl RubberButyl rubber is another type of synthetic rubberGood chemical resistance against many chemicalsVery good against acids/basesGood protection against some solventsGenerally offers relatively poor dexterity

Butyl Rubber “Toxicological Agents” Protective Glove

Polyvinyl Chloride-Coated Natural Latex RubberNatural latex rubber gloves with PVC coatingProvide resistance against some chemical groupsPVC is not generally good against solventsHave a cotton inner liningLimited dexterity

PVC-Coated Natural Rubber Gloves

Natural Latex RubberBlack colored “Industrial” GlovesGauntlet length (about 14” long)Somewhat similar in appearance to electrical safety glovesDon’t get them mixed up!!These are not designed to provide electrical protection!!

Natural Latex RubberProvides protection against some acids and bases (acids/bases). For example:Cleaning compoundsNatural latex rubber does not provide good protection against most solvents or oil-based chemicalsDoesn’t protection well against hydraulic fluid, paint solvent, gasoline, kerosene, most cleaning solvents (Acetone is an exception)

Natural Latex Rubber “Industrial” Glove

Disposable NitrileSimilar to latex medical glove, but made from nitrilePopular because of cost and allows good dexterityProvides chemical resistance for various chemicalsNot good for heavy exposure or immersion in chemicalCan be used as an under-layer or over-layer for other gloves

Medical Exam-type Disposable Nitrile Gloves

Multi-Layer Laminate GlovesProvides highest level of protection to more chemicals than any other glove typeVery thin (2.7 mil), allows good dexterityFeels “strange” at first due to laminate construction, but a thin, nitrile outer glove helps the laminate material better conform to the hand

Multi-Layer Laminate Gloves

Gloves that should NOT be used for protection against industrial chemicals

Non-Nitrile Disposable GlovesSurgical Latex (medical exam gloves)Do NOT provide any chemical resistanceWill dissolve in oil-based solventsONLY to be used for medical purposesVinyl (food processor gloves)Also provide little chemical resistanceDesigned for hygiene during food processingCan be used for sorting trash, etc.

Surgical Latex and Food Processor Vinyl GlovesDo not use for chemical protection!!

Chemical, Biological, and Radiological (CBR) GlovesMade from thick Butyl RubberProvides resistance to a wide variety of chemical and biological warfare agentsDesigned for use with MOPP gearSimilar to “Toxicological Agents” gloveCBR Gloves come in a SetTwo Butyl rubber overglovesTwo cotton underglovesVery expensive, don’t use for daily maintenance

CBR Butyl Rubber “Glove Set”

Proper Glove StorageDo not store gloves that have chemical residue on themDo not store gloves in a folded positionDo not store PPE in HAZMAT locker due to potential chemical contamination and degradation of protective materialEnsure all PPE is properly cleaned/sanitized prior to storage

A Key to Success!Wearing the proper PPE!Most mishaps occur when either the wrong protective glove is worn or the glove is taken off before the work is completeWork Center Supervisors MUST be the first line of enforcement

Another Key to SuccessMake sure your gloves are in good condition!Make sure you “pre-check” gloves!Check for cracks, pin holes, degradation, etc.If chemical resistant gloves can’t be cleaned, discard them and order a new pairDispose of “disposable” gloves

General PrecautionsEnsure you have the correct type of chemical protective glove for the taskThoroughly inspect gloves prior to useWash hands once gloves have been removed Once removed, disposable gloves should be discardedNon-disposable/reusable gloves may be washed, as needed, and then inspected for tears, holes, degradation, and other damageRemove gloves before touching personal items, such as phones, computers, pens, doorknobs, etc. If a glove fails and hazardous chemicals come into contact with skin, seek medical attention as needed and inform your supervisor and the command Safety Manager/Officer

FeedbackIf you identify problems with PPE recommendations in the MRC, NSTM 670 HMUG, or other references:Submit a feedback report using the appropriate form (usually in the reference itself) so that the problem can be resolved

Other Chemical Hand Protection ResourcesFederal OSHA PPE Guide (link in notes)NIOSH Skin Exposures and Effects webpage (link in notes)Chemical resistant glove manufacturer websites

And Now for a Test!

Did this sailor make a good glove choice?Bonus Points: What about his other PPE choice(s)? Why?

If you have questions or comments regarding this presentation please contact the Naval Safety Center feedback line: safe-oshfdbk@navy.mil

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