Attachment_04m_2015_IHS_of_94300_Branch.pdf

2015 PERIODIC INDUSTRIAL HYGIENE SURVEY

OF

6.2.3.5

(94300) PROCESSING DYNAMIC COMPONENTS BRANCH

INDUSTRIAL HYGIENE DEPARTMENT

NAVAL HEALTH CLINIC

CHERRY POINT, NC 28533-0023

Enclosure (9)

TABLE OF CONTENTS

Executive Summary……………………………………………………………………………...3

Evaluation Summary…………………………………………………………………………….4

94302 Bearing Shop……………………………………………………………………………...6

94303 Dynamic Flight Controls/Landing Gear Shop…………………………...……………14

94304 Rotor Blade Shop…………………………………………………………………..……21

94315 H53 and H46 Gearbox Shop……………………………………………………………38

Glossary of Terms Appendix A

Customer Satisfaction/Complaint Form Appendix B

EXECUTIVE SUMMARY

The periodic industrial hygiene survey of 6.2.3.5 (94300) Branch was conducted by Ralph Rhodes, Industrial Hygienist, in December 2015. The purpose of the survey was to evaluate any changes to work processes or work practices that have occurred since the previous IH survey of 2012. A summary of program findings follows the Executive Summary. All personnel demonstrated a desire to maintain a safe and healthy work environment and as such there were few concerns to be addressed. The particular areas of interest to the 94300 Branch are as follows:

Changes in the shops in the past two years have resulted in the elimination or suspension of several work processes. Propeller work is now being done at Warner Robins AFB, and the H-

53D is no longer being serviced at FRCE, the H-53E still is however. Work load has been relatively light, and several new test stands and processes are coming on line to support the V-22 and the F-35 programs.

The hearing protection program and medical surveillance program for noise are in the process of being re-evaluated for some work spaces due to improvements and changes in recent years.

A request was received in February to evaluate asbestos brake component work, and a request from the FRCE IH to add his observations about that operation to the IH survey has been addressed in the hazard assessment for shop 94303. This operation has been done in accordance with health and safety guidelines and does not present a significant health hazard (see the hazard assessment for 94303).

Prior IH surveys recommended improvements in areas of ergonomics and musculoskeletal stress.

Discussions with artisans in the shops during the current 2015 survey did not indicate any concerns. This may be due to a decrease in work load and improvement in managing the tasks involved.

There were no other significant health concerns that could not be addressed during the survey.

Medical Surveillance: DODINSTS 6055.5 requires a registry of personnel occupationally exposed to hazardous chemicals, physical or biological agents to be developed for each workplace surveyed. This registry is used to ensure that each employee potentially exposed to a health hazard is enrolled in the appropriate medical surveillance program, and is examined by an occupational health physician, audiologist, or other health care provider to detect any insidious or acute ill effects. This information is provided in this survey report. The FRCE Division Secretary will compile the registries and schedule the required medical surveillance physicals with the Naval Health Clinic Occupational Medicine Department.

Customer Service Survey: A customer service survey is attached as Appendix B. Please have each supervisor from each shop complete the survey and return it via guard mail to: Naval Health Clinic, Attn:

Industrial Hygiene Department. This report reflects conditions and operations at the 6.2.3.2/3/4/6 Branch during the survey period. A periodic IH Survey is required for most work places by DODINST 6055.5. In addition, changes in procedures, processes or workload that may significantly alter personnel exposures require more frequent evaluations. Supervisory personnel should be encouraged to notify the FRCE Safety

Office when significant changes occur.

EVALUATION SUMMARY

PERIODIC INDUSTRIAL HYGIENE SURVEY

6.2.3.5

(94300) PROCESSING DYNAMIC COMPONENTS BRANCH

New or Significantly Modified Work Center Operations/Processes?

No significant changes in operations/processes were identified. *

The following changes were identified:

*For purposes of this survey, “significant changes” are defined as workplace modifications that require a change in recommended medical surveillance enrollment, personal protective equipment, or exposure control measures (ventilation, etc).

Program Findings and Recommendations

1. Medical Surveillance Program Status. Attachment (4) provides a summary of current medical surveillance needs.

No Medical Surveillance is Recommended.

Medical Surveillance is Recommended.

No Change in Medical Surveillance Recommendations.

Medical Surveillance Recommendation changes

Previous IH Survey

2. Hazardous Material Control and Management (HMC&M) Program:

AUL Y N N/A Accurate Y N

MSDS Files Y N N/A Accurate Y N

HAZMAT Training Required? Y N (Note: IH does not track training completion.)

Other (lead, asbestos, etc): Y N

Comments:

3. Management of Reproductive Hazards:

Reproductive Hazards Present? Y N

Any change from previous survey? Y N

Comments: Noise, toluene, xylene and lead are reproductive hazards, identified in Individual Hazard Assessments. It is recommended that, wherever possible, the work center reduce, minimize, and/or eliminate the reproductive hazards and personnel exposure. Females who work with these materials should mention this to their prenatal medical care provider.

Significant health exposure should not result during normal shop operations.

4. Noise and Hearing Conservation Program (HCP):

Are personnel recommended for the HCP? Y N

Are personnel receiving audiograms? Y N N/A

Is hearing protection readily available? Y N N/A (cranial, muffs and plugs)

Is hearing protection used? Y N N/A Not Available for Observation

Comments: Continue use of hearing protection and participate in the Hearing Conservation Protection Program as specified.

5. Respiratory Protection:

Are respirators used to control workplace exposures? Y N

Are they effective? Y N N/A

Is the Respiratory Protection Program satisfactory? Y N N/A

Comments: continue use of respirator when required.

6. Ventilation:

Are ventilation systems used to control workplace exposures? Y N

Are the systems effective and operating properly? Y N N/A

Comment:

7. Ergonomics:

Ergonomic risk factors were identified pertaining to shop work office/computer work

Available equipment/furniture incorporates good ergonomic design? Y N N/A

Ergonomic training recommended? Y N (Note: IH does not track training completion.)

Comments and/or Recommendations: Some work processes could benefit from improved handling methods and devices.

Progress is being made. Materials handling stressors are known and mitigated by use of lifting devices and safe manual lifting methods.

8. Other Applicable Programs:

Lead Control Asbestos Control

Carcinogens Other Class IV Visible Laser- Non Ionizing Radiation

Comments: lead is not present at or above the action level. Hexavalent Chromium and Cadmium are carcinogens identified in the shop survey reports. It is recommended that, wherever possible, the work center reduce, minimize, and/or eliminate the carcinogens and personnel exposures.

Consultative or Special Surveys/Findings Since the Previous Survey: (check if none)

Additional Comments:

Personnel demonstrated an active interest in promoting an effective health and safety program.

INDIVIDUAL HAZARD ASSESSMENT Date: December 2015

Industrial Hygienist: Ralph Rhodes

Organization: FRC East Processing Dynamic Components Branch

Building Number: 133

Shop (WC)/Code: 94302 Bearing Shop

Supervisor: Ronald Perry

Phone: 8114 or 7299 (shop)

Total Personnel, M/F: 7, 3/4

(no evening shift)

GENERAL SHOP OPERATIONS: Personnel assigned to this shop clean, inspect, lubricate and package new and used aircraft engine bearings. The shop is separated into an induction station, a main area and a clean room area. Personnel rotate among the different work stations depending upon the workload need.

Induction - Prior to moving into the main area, parts arrive at an induction area where incoming materials are logged and the required work is planned. A task manager and a production control person work here.

Clean Line - The main shop area consists primarily of an automated and ventilated bearing cleaning line, which has been replaced with an all new system, a varsol spray booth, a 180 o F VVL800 oil dip tank (pre soak), a ventilated buffing/polishing machine. There is also an oven that operates at approximately 250ºF for drying component parts. There are several work benches for inspecting cleaned bearings. The first work process is cleaning. Parts are put into a metal basket, which runs through the clean line. Hot parts are allowed to cool, then the baskets are pulled onto portable lift tables to be taken to a work bench for inspection. A basket can weigh 40 to 60 pounds.

Preinspection – artisians use lighted magnification to examine bearings. They utilize the varsol booth and polishing machines for further cleaning as needed. An air driven etching device is used to mark the bearings.

The clean area is divided into three rooms. One has a second bearing cleaning line like the main one.

This line also lubricates the bearings. There is a lube room, where bearings are packaged into plastic bags that are treated with anti oxidant compounds. The third is a dimension room, where they are inspected and measured.

Once a week, samples of approximately one pint are taken from each of the tanks of the cleaning stations on the two clean lines, to be sent to the lab for analysis.

There are two demagnetizing devices, one located in the dimension room (inspection area) and one in the main shop area.

This shop has two emergency combination shower/eyewash stations. Employees rotate among the work areas.

HEALTH HAZARDOUS

STRESSORS AND

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

WORKERS

CONTROLS

EXPOSURE

ASSESSMENT (1)

Induction area-musculoskeletal stress.

administrative work, materials handling

2 persons, To 6 hours, 4 days per month

7 Safety glasses, splash shields, safety shoes, N-Dex chemical resistant gloves, lift tables, Acceptable. No significant force or repetition found.

Main bearing cleaning line – musculoskeletal stress, skin exposure to hot surfaces.

Two people per run, Daily to 6 hours

7 SOP, Safety glasses, Tyvek coveralls/hats/shoe covers, safety shoes, high heat protective gloves, hydraulic lift carts

Acceptable. Lift tables mitigate lifting hazard, baskets allowed to cool before handling. For unusual situations, high temperature gloves are available to prevent skin contact.

Pre-inspection and cleaning -musculoskeletal stress.

Daily to 6 hours 7 Safety glasses, safety shoes, earplugs, hydraulic lifting carts, Acceptable. Variation in routine and lifting aids help prevent significant exposure.

Artisans report no physical problems.

Cleaning parts with varsol spray - skin and inhalation exposure to petroleum distillates, petroleum lubricants, noise.

To 4 times daily, up to 3 minutes each

7 Full-face shields, safety glasses with side shields, rubber apron, earplugs, ear muffs, tear resistant kevlar gloves, local exhaust ventilation.

Unacceptable for noise

Acceptable for chemicals.

Materials are mild irritants, ventilation, gloves and earplugs prevent significant exposure.

Clean area, Dimensions room –

Inspection of bearings - skin and inhalation exposure to petroleum lubricants.

To 6 hours a day, 7 Safety glasses, safety shoes, N-Dex chemical resistant gloves

Acceptable. Materials are mild irritants.

Clean area, lubrication, preservation and packaging –

Skin exposure to petroleum lubricant and Cortec VCI 126

Blue (plastic bag coating).

To 6 hrs. per day

7 N-Dex chemical resistant gloves, Tyvek coveralls, hats, Acceptable. Materials are mild irritants.

Clean area, bearing cleaning line - musculoskeletal stress, skin exposure to hot surfaces and petroleum lubricants.

Two people per run, Daily to 6 hours

7 SOP, Safety glasses, Tyvek coveralls/hats/shoe covers, safety shoes, high heat protective gloves, hydraulic lift carts

Acceptable. Lift tables mitigate lifting hazard, baskets allowed to cool before handling. For unusual situations, high temperature gloves are available to prevent skin contact.

Use of buffing wheels – eye hazard, skin abrasion, musculoskeletal stress

10 times daily, to 3 minutes each

7 Abrasion proof gloves, Safety glasses, safety shoes

Acceptable. Short duration, adequate PPE.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Use of heated dip tank – eye and skin exposure to hot oil, musculoskeletal stress. Metal baskets with bearings in them are placed inside. The lid is closed and the machine continually dips the bearings in oil for a specified length of time. Does not require staying with the machine during the cycle.

Twice Daily, 5 minutes

7 SOP Full-face shields, safety glasses with side shields, rubber apron, earplugs, high heat protective gloves, local exhaust ventilation.

Acceptable. PPE and SOP limit exposure potential.

Clean line – obtaining 1 pt.

samples of cleaning fluids, 18 total. Skin and inhalation exposure to fluids.

Weekly, 45

Any 1 of 7 SOP Full-face shields, safety glasses with side shields, rubber apron, Acceptable. – mild irritants, PPE and SOP limit exposure potential.

Observation – the dimensions room has no eye hazards. Protective eyewear is not necessary in this work space. It may interfere with visual inspection of parts. There is now a new bearing cleaning line. The function is the same, now the operation is smoother and easier to access.

Exposure Monitoring – none required.

Recommended Medical Surveillance Programs – Noise (503) for all personnel, in accordance with current guidelines.

1. USE THE FOLLOWING EXPOSURE CODES:

ACCEPTABLE – ONE WHERE THE IH WILL NOT EXPECT THE SIMILARLY EXPOSED GROUP (SEG) TO BE

EXPOSED ABOVE THE SELECTED OEL.

UNCERTAIN – ADDITIONAL DATA NEED TO BE COLLECTED TO CLARIFY THE EXPOSURE ASSESSMENT. THE

IH SHOULD MAKE AN INTERIM EXPOSURE ASSESSMENT BASED ON OBSERVATION OF THE PROCESS AND/OR

PROFESSIONAL JUDGMENT.

UNACCEPTABLE – ONE WHERE THE IH WILL EXPECT THE SEG TO BE EXPOSED ABOVE THE SELECTED OEL.

SKIN -- THE MATERIAL POSES A SKIN ABSORPTION HAZARD

REPRO HAZARD – THE MATERIAL IS A NAVY-RECOGNIZED REPRODUCTIVE HAZARD

CARCINOGEN – THE MATERIAL CONTAINS >0.1% OF AN OSHA, ACGIH, IARC, OR NTP-RECOGNIZED

CARCINOGEN

Table 1 - Identified sources of noise for shop 94302

1. Single hearing protection required Double hearing protection required (above 104 dBA)

Varsol booth, use of air nozzle

Buffing stations none

Notes: Noise hazardous area is marked on the floor and warnings are posted. Personnel were using hearing protection as required.

Table 2 - Automated bearing cleaning line. Solutions and operating temperatures.

Dip tanks 1 through 4 Tanks 5 and 6 Tank 7 Tank 8

Lube oil

SDS 205237

180 degrees

Aqueous clean

SDS 205341

165 degrees

Ambient air Rust arrest 53216 2%

130 degrees

Tank 9 Tank 10 Tank 11 dryer

Ambient air Descale, corrosol 52921

11%

SDS 182729, 182476

Rust arrest 53216 2%

130 degrees

Hot air, 250 degrees

NAVAL HEALTH CLINIC, CHERRY POINT, NC 28533-0023

VENTILATION HOOD/SYSTEMS EVALUATION

Activity: FRCE Supv./Phone: Ronald Perry /8114, 7299 Log #: 16v-206,207,208

SECTION I – HOOD/SYSTEM LOCATION

Shop: 94302 ENGINE BEARING SHOP Bldg: 133

SECTION II – INSTRUMENTATION

Make:

TSI S/N: 9009 Model: 9565P Calibration Date: Dec 2015

SECTION III – HOOD SYSTEM/EVALUATION (Bearing Cleaning Line)

Contaminant (s) Controlled: VVL800 Oil, Hydraulic Fluid, Magnuspray, Rust Arrest

SYSTEM DIAGRAM

A B C

Load b

MEASUREMENTS

Sample

Number

DUCT VELOCITY (FPM)

16v-206 A 1012

16v-207 B 240

16v-208 C 660

SECTION IV – COMMENTS: A new bearing cleaning line. Measurements taken at duct opening inside hood.

Surveyed by: Ralph Rhodes Date: 15 Dec 2015

Activity: FRCE Supv./Phone: Ronald Perry /8114, 7299 Log #: 16v-209

Section III – HOOD SYSTEM/EVALUATION (BUFFING/POLISHING WHEELS)

Contaminant(s) Controlled: Metal dust

(BUFFING/POLISHING WHEELS)

HOOD

WHEEL

DIAMETER

INCHES

CAPTURE

VELOCITY

(FPM)

RECOMMENDED CAPTURE VELOCITY

*(FPM)

SMOKE TUBE

A 3 370 300-400 n/a

B 8 340 300-400 n/a

C 8 306 300-400 n/a

SECTION IV – COMMENTS: *Recommended capture velocity is 500-2000 FPM for buffing/polishing per ACGIH Ventilation Manual, 27th Ed.; pg. 13-155; Figure VS-80-30 (date

1-10). Measurements taken near the point of operation. Ventilation meets recommended velocity.

A a

B C A C

Activity: FRCE Supv./Phone: Ronald Perry /8114, 7299 Log #: 16v-210

SECTION III – HOOD SYSTEM/EVALUATION (OIL TANK)

Contaminant (s) Controlled: VVL800 OIL

HOOD # DIMENSIONS

(FT)

FACE AREA

(SQ FT)

AVG. CAPTURE

VELOCITY

(FPM)

RECOMMENDED

CAPTURE

VELOCITY *(FPM)

SMOKE

TUBE

AIRFLOW

133-B33

3 X 3

50-100 n/a

SECTION IV – COMMENTS: Contaminant is oil, heated to 250 degrees F. Cover is open only to place and remove parts basket. Due to low vapor pressure of oil, as opposed to a solvent, and the cover, capture velocity should be sufficient for this operation. Measurement was taken through access hole in the exhaust duct, just past the branch connection.

VVL800 OIL

Activity: FRCE Supv./Phone: Ronald Perry /8114, 7299 Log #: 16v-211

SECTION III – HOOD SYSTEM/EVALUATION (VARSOL SPRAY BOOTH)

Contaminant (s) Controlled: Solvent Vapors (Varsol)

FILTER FILTER

HOOD #

(Back Room)

DIMENSIONS

(FT)

FACE AREA

(SQ FT)

Capture

VELOCITY

(FPM AVG)

RECOMMENDED

Capture VELOCITY

*(FPM)

SMOKE TUBE

AIRFLOW

133-B40

4 X 3

100-200

Moderate

SECTION IV – COMMENTS: *Recommended face velocity of 100-200 FPM for spray booths with contaminants released at low velocity into moderately still air per ACGIH Ventilation Manual, 25th Ed.

(pg. 3-6/Table 3-1). This system meets the recommended capture velocity.

INDIVIDUAL HAZARD ASSESSMENT Date: November 2015

Organization: FRC East Processing Dynamic Components Branch

Building Number: 4032

Shop (WC)/Code: 94303 Dynamic Flight Controls/Landing

Gear Shop

Supervisor: David R. May

Phone: 7939

Total Personnel, M/F: 23, 23/0

(no evening shift)

Safety Rep. Clifford Grebe

GENERAL SHOP OPERATIONS: The shop overhauls and repairs H-53, and AV-8 dynamic flight controls (rotor heads, flight controls, landing gear). Support for H-46 is still there but has been discontinued. Support for V-22 aircraft is coming on line. Typically, disassembly is performed using hand and pneumatic tools. All components are then cleaned with either isopropyl alcohol by rag wipe application or in the parts cleaning tank. The parts are then routed for inspection and rework. Upon their return, the units are then reassembled. Small amounts potting compound (25 ml) may be used to seal the rotor heads and reservoirs. Dry ice and ovens are used in the assembly process to shrink or expand parts.

The assembled unit is then bench tested. Personnel may spend 4 to 5 hrs. a month on the flight line for special assist or special request work.

Items repaired include rotor heads, yoke assemblies, pitch links, actuator, swash plate, tail rotor, sleeve and spindle, rotor hub, landing gear.

The work process for “Manufacture and Test Aircraft Cables” has gone to shop 94315. Cargo hook test area now has a new test stand.

Asbestos brake assemblies

It has been brought to the attention of both FRCE and the Health Clinic Industrial Hygiene Departments that some H-53 brake assemblies contain asbestos. These parts have officially been switched over to non asbestos parts, however some of the old parts are still in the supply system. The reference below recognizes and addresses this situation, and provides an SOP for safe handling of these parts. The shop is in compliance with the guidelines, and a summary of the FRCE Industrial Hygienist and Health Clinic

Hygienists’ comments is included at the end of the hazard assessment table under “Observations”.

Reference: FRCE, H-53 Local Engineering Specification, H53ISST.2-ARB/176, dated 13 Jan 05

(Identification: CP 68-18-LL-218, Rev A)

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

General shop/pneumatic tool and hand tools use, disassembly and assembly – noise (repro)

30 min. twice a week

22 earplugs and circumaural muffs, anti-vibration gloves

Unacceptable. Some tools produce noise in excess of 84 dBA. Single hearing protection required with tool use.

Disassembly and assembly – eye, skin and inhalation exposure to organic solvents (acetone, isopropyl alcohol <1 qt/week, adhesives, varsol).

To 3 hours daily 23 Gloves (nitrile and rubber), aprons, safety glasses with side shields, ambient ventilation.

Acceptable, based upon quantities, duration of use, and historical sampling results.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Disassembly and assembly – eye, skin and inhalation exposure to petroleum lubricants, greases/hydraulic fluids, oils, anti-seize compound.

To 8 hours daily 23 Gloves (nitrile and rubber), aprons, safety glasses with side shields, ambient ventilation.

Acceptable. These materials are mild health hazards.

Disassembly and assembly – heating or freezing parts. Skin exposure to extreme heat or cold.

Less than 10 min per occasion, 0 to 4 times a day.

23 Thermal gloves Unacceptable. Direct skin exposure will cause burns. Use of gloves mandatory.

Disassembly and assembly, Manual lifting and hoisting tasks – musculoskeletal stress

(lifting, pulling prying, pushing, hand arm vibration from pneumatic tools), cuts and bruises.

To 30 min per day

23 mobile lift table, lazy susan table adjustable stool, leather gloves

Employees twist and bend their torsos while lifting asymmetrical items weighing in excess of 50 lbs.

from about floor height. These parts are then hand carried and placed atop work benches for disassembly. Once assembled, these steps are repeated in reverse order.

Some of this musculoskeletal stress has been alleviated through the use of a mobile lift table that enables the operator to place the load at a convenient working height, and a lazy susan table which holds up to

700 lbs with an ergonomic adjustable stool. Gloves required for sharp edges.

Hand clean parts with degreaser or alcohol – Eye, Skin and inhalation exposure to isopropyl alcohol, pd 680

To 2 hours daily 23 Nitrile gloves, safety glasses with side shields

Acceptable. Mild irritant, limited exposure time, use of gloves.

Parts cleaning, varsol booth -

Eye, Skin and inhalation exposure to isopropyl alcohol, pd

30 min per week 23 Chemical goggles, splash shield, rubber apron

Acceptable, based upon historical sampling results.

Apply lubricants and sealants -

Skin and inhalation exposure to petroleum lubricants, potting compound, DS-108, PR 1826b (3 to 4 25ml syringes/day)

To 2 hours daily 23 General ventilation, nitrile gloves, and safety glasses with side shields

Acceptable. Mild irritant, limited exposure time, use of gloves.

Bench Test units for H-46, actuator test, connect and run actuator at test stand, testing of hydraulic units – Noise, skin and inhalation exposure to hydraulic fluid, isopropyl alcohol, acetone (1-2 oz), hydraulic test fluid

To 8 hours a day, intermittent process

7 General ventilation, nitrile gloves, safety glasses with side shields, aprons, double hearing protection, mechanix anti-vibration gloves

Noise unacceptable. Hearing protection required.

Chemical exposure acceptable based upon limited potential, brief duration, materials are milt irritants.

Currently not being done.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Surface treatment with chromate sempens – skin and inhalation exposure to chromate compounds (carcinogen)

To 15 min per day

3 Safety glasses with side shields, nitrile gloves

Acceptable. Limited potential for exposure with this method, and based upon historical sampling results.

Stencil and spray can touch up painting – eye, skin and inhalation exposure to toluene and xylene (repros).

10 seconds, less than one 16 oz.

can per month

23 Safety glasses with side shields, ambient ventilation

Acceptable. Amount sprayed is very small, short duration. Other jobs done at nearby paint shop.

Sleeve and Spindle Liner

Removal – skin exposure to beryllium (carcinogen).

4 to 8 hours a day twice a week

8 Safety goggles, face shields, aprons

Acceptable for beryllium based upon sampling results from 2005.

Follow SOP guidelines for

Beryllium listed at the end of this table.

Sleeve and Spindle Liner

Removal – noise, eye exposure to flying debris

4 to 8 hours a day twice a week

8 Single hearing protection, safety goggles, face shields, aprons

Unacceptable. Noise levels exceed

84 dBA. Single hearing protection required. Safety goggles required to prevent eye injury.

Tear-down/Inspection, Repair

& Reassembly of Landing

Gear Components, Nose and

Wing Gear Noise, organic vapors, hydraulic fluid and lubricants. Artisans disassemble landing gear components from

AV-8/H-53 & H-46 aircraft.

Components are then cleaned, repaired, and then reassembled.

Daily 8 hours 9 Single hearing protection, Safety glasses, face shield, rubber apron, nitrile gloves.

hearing protection, rubber and disposable nitrile gloves

Noise unacceptable. Hearing protection required.

Acceptable for organic vapors, hydraulic fluid and lubricants.

Although personnel regularly come in contact with small amounts of hydraulic fluids, greases and lubricants, no dermal problems have been reported. Good personal hygiene practices, i.e. washing, and available PPE are adequate to protect personnel from exposures.

Airborne concentrations are well below PELs based upon sampling for similar operations.

Tear-down/Inspection, Repair

& Reassembly of Landing

Gear Components, Nose and

Wing Gear - Skin and inhalation exposure to hexavalent chromium(carcinogen).. Spot application of primer

Daily 5 minutes 9 Nitrile gloves, safety glasses.

Acceptable. Air sampling for this task resulted in exposure well below Navy OEL.

Servicing of hydraulic components – noise, eye, skin and inhalation exposure to hydraulic fluids, inhalation of nitrogen gas

Daily 8 hours 9 Safety glasses, rubber or nitrile gloves, single hearing protection, tyvek jackets, enclosed delivery mechanism

Acceptable for hydraulic fluids based upon sampling and evaluation for similar processes.

Acceptable for nitrogen gas based upon very limited potential for significant release.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Wheel disassembly, repair and assembly - Noise, eye injury, musculoskeletal stress, hand-arm vibration.

Wheels are disassembled, repaired, and then reassembled in this area.

Daily to 7 hours 4

Safety glasses, rubber or nitrile gloves, single hearing protection, tyvek jackets

Unacceptable for pneumatic tool operation. Single hearing protection required.

Musculoskeletal stress acceptable.

Hazards are known and mitigated using SOP.

Wheel disassembly, repair and assembly – skin and inhalation exposure to hexavalent chromium compounds

(carcinogen).

Weekly less than 30 min total

4 Acceptable based upon sampling results from similar operations, short duration of use and method of application.

Wheel disassembly, repair and assembly – skin and inhalation exposure to petroleum lubricant, spray paints, organic solvent

(toluene (repro), CPC, PF solvent, Stoddard solvent, xylene

(repro), less than 1/2 oz per occasion) aircraft grease (1 lb/week)).

Daily, 15 to 45

4 Acceptable. All materials used in small amounts.

Brake disassembly, repair and assembly – Noise. From pneumatic tool use.

Daily, to 1 hour. 2 Single hearing protection (plugs, muffs)

Unacceptable. Noise can exceed

84 dBA. Single hearing protection is required.

Brake disassembly, repair and assembly – Musculoskeletal stress (hand arm vibration).

Pneumatic tools used.

Sporadic occurrence

Daily, 20 minutes total

2 None. Work gloves available

Acceptable. Duration and frequency is such that no significant problems occur.

Brake component disassembly, repair and assembly – inhalation and ingestion exposure to asbestos. Hand tools used for this part of brake operation.

Sporadic occurrence, 2 hours per occasion

1 SOP, tyvex suit, nitrile gloves, safety glasses with side shields, and a face shield

Acceptable. SOP, sampling results, and infrequent occurrence minimize exposure potential.

Brake and bearing disassembly, repair and assembly – skin exposure to extreme cold parts. Parts are chilled to cause them to shrink for better fit.

20 seconds per occasion, less than 5 per day

2 Cryogenic gloves Unacceptable. Cryogenic gloves are provided and must be worn to prevent deep freezing of flesh.

Brake and bearing disassembly, repair and assembly – skin exposure to hydraulic fluid and petroleum lubricant.

Daily, to 1 hour 2 Nitrile gloves Acceptable. Material is mild health hazard, minimal amounts used.

Overhaul/repair of flight control systems – skin and inhalation exposure to petroleum lubricants and organic solvent

(isopropyl alcohol), noise. Flight control boxes rebuilt, doors and ramp latch assemblies rebuilt, flight control flaps, ailerons, rudders and elevators repaired and replaced.

Daily to 2 hours 12 Nitrile gloves, safety glasses with side shields, single hearing protection

Acceptable. Materials are mild health hazards, minimal amounts used. Noise acceptable, not exceed

8 hr. TWA but employees may be exposed from nearby operations. Is intermittent, short duration, however single hearing protection is advised, can exceed 84 dBA.

HEALTH HAZARDOUS STRESSORS

AND ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER OF

Cargo hook test and repair – noise to 3 hours/day, 6 hours per month

2 Safety glasses, ear plugs, cranials

Unacceptable. Past sound level readings have reached 104 dBA.

Manufacture and Test Aircraft Cables – noise exposure from swaging machine. Skin and inhalation exposure to adhesives (6 kits or

3 cans per year, contain toluene and xylene

(repros)), petroleum lubricant (less than 1 oz per occasion), varsol (naphtha, parts cleaning station), paints (xylene, toluene).

Manufacture and test aircraft control cables.

Chains are also reworked here.

To 6 hours a day, intermittently

2 Safety glasses w/ss, single hearing protection, nitrile and synthetic rubber gloves, double hearing protection

Unacceptable for swaging operation.

Single hearing protection required.

Observations: Ergonomics and musculoskeletal stress were not found to be as significant in past surveys, likely due to a change in work load and changes in work processes. There still exists the potential for musculoskeletal stress and injury but it is largely mitigated by safe work practices and operating procedures.

Recommendation: Progress in reduction of musculoskeletal injury has been made in part as a result of a proactive safety program. The shop should continue with these efforts and cooperation of the artisans.

Asbestos brake assembly work

Brake assemblies containing asbestos are identified by part number, and are routed upstairs to a designated area for disassembly and cleaning. The artisan who works at this work station is aware of the asbestos, the health risks associated with asbestos, and the requirements for safe handling of these parts.

Brake assemblies are placed on a separate table lined with a trash bag. Hot soapy water is used to saturate parts, then they are disassembled with hand tools (ratchet and screwdriver). No pneumatic tools are used. PPE used include tyvex suit, nitrile gloves, safety glasses with side shields, and a face shield. Parts are cleaned by wiping and placed in a solvent tank for further cleaning. All ACM is placed into a trach receptacle labeled “asbestos” for disposal. Results of wipe samples taken in the work area by the FRCE IH were within safe working guidelines.

All personnel in the shop receive annual asbestos awareness training.

Noise – personnel report that the longest operation done in the shop that produces loud noise is work on the H-53 rotor head actuator (1/2 hr.).

Repeat recommendation, noise and hearing: For the purposes of protecting employee hearing, it is recommended that all personnel have hearing protection on their person while in these areas, however for extended periods of no noise, it is reasonable for personnel to not wear their hearing protection. Personnel are advised to give notice to others in the area before commencing noise hazard operations as a courtesy, to allow them to don hearing protection. Generally speaking, a noise hazardous condition exists when conversation is difficult at arms length. This policy may not work for some shops where noise is more frequent or unpredictable, and is subject to approval by the safety office.

Exposure Monitoring – none required.

Recommended Medical Surveillance Programs – Noise (503).

ACCEPTABLE – ONE WHERE THE IH WILL NOT EXPECT THE SIMILARLY EXPOSED GROUP (SEG) TO BE

EXPOSED ABOVE THE SELECTED OEL.

UNCERTAIN – ADDITIONAL DATA NEED TO BE COLLECTED TO CLARIFY THE EXPOSURE ASSESSMENT. THE

IH SHOULD MAKE AN INTERIM EXPOSURE ASSESSMENT BASED ON OBSERVATION OF THE PROCESS AND/OR

PROFESSIONAL JUDGMENT.

UNACCEPTABLE – ONE WHERE THE IH WILL EXPECT THE SEG TO BE EXPOSED ABOVE THE SELECTED OEL.

SKIN -- THE MATERIAL POSES A SKIN ABSORPTION HAZARD

REPRO HAZARD – THE MATERIAL IS A NAVY-RECOGNIZED REPRODUCTIVE HAZARD

Beryllium Standard Operating Procedure (SOP) guidelines

The following Standard Operating Procedure (SOP) guidelines have been recommended by the

FRC East Safety Office. They should be included in safety training.

-Beryllium is an eye, skin and respiratory system irritant and is classified as an A1 carcinogen by

ACGIH. Observe the following workplace guidelines to help minimize beryllium exposure to beryllium dust.

(a) Avoid creating air born dust during cleanup. Use high-efficiency particulate air (HEPA) vacuums to clean equipment and the floor around beryllium work areas. Wet cloths may also be used to wipe surface areas near beryllium work.

(b) Avoid prolonged skin contact with beryllium metal. Wear gloves and Tyvek lab coats to protect skin while working with beryllium.

(c) To avoid accidental injestion, do not allow workers to eat, drink, smoke, or apply cosmetics at their workstations. Wash hands thoroughly before eating, drinking, smoking or applying cosmetics and at the end of the shift. Never use compressed air to clean parts or working surfaces near beryllium work areas.

EXPOSURE MONITORING

Organization: FRC EAST PROCESSING DYNAMIC COMPONENTS BRANCH

Shop (WC)/Code: 94303/Bldg. 4032

Supv. /Phone: David R. May/7939

Date/Type/IH: Nov-Dec 2015/Periodic/Ralph Rhodes

Operation Potential

Hazard

No.

Samples

Sample location

Method Sample

Freq

ManHr/yr

All Shop Work Noise 6 HZ and SZ

Sound Survey

PD 6 48

I=Intermittent DR=Direct Reading BZ=Breathing Zone HZ=Hearing Zone

C=Continuous BI=Bubbler/Impinger PD=Personal Dos. AT=Adsorption Tube

Y=Yes/N=No IT=Indicator Tube GA=General Area SZ=Source Zone F=Filter O=Other

*If exposure monitoring is required, contact the Naval Health Clinic, Industrial Hygiene Department (ext.

4564/2441), prior to the next evolution of the above operations for evaluation/sampling.

Organization: FRC East Processing Dynamic Components Branch

Building Number: 137 (main shop), 4037 (tail blades), 423 (laser), 4808 (V-22), 1792, 1793, 1794 and 4610 (balancing).

Shop (WC)/Code: 94304 Rotor Blade Shop

Supervisor: Douglas Ford

Phone: 7937

Total Personnel, M/F: 32, 29/3

(no contractors, 4 people eve. shift)

(Adam Gillikin, Safety POC)

2015 Survey comments: Shop personnel count for these two work areas has dropped by approximately

40 percent through attrition and change in work load. Work change is due in large part to the V-22 program and changes in use of the other rotor blade aircraft. All processes were reviewed with the safety point of contact and shop personnel. It is anticipated that as the V-22 program comes more on line, and periodic improvements to work processes occur, these work areas will see their processes change to a new normal routine.

With the removal of H-53 D aircraft work, several of the work processes are now discontinued.

Propeller Work has transferred to Warner Robins AFB.

ROTOR BLADE SHOP (94304)

GENERAL ROTOR BLADE SHOP OPERATIONS: This shop is responsible for corrosion prevention, repairs, and testing of the H-53E, H-53D, and H-46 rotor blades. The shop is comprised of

Aircraft Parts Repair Mechanics and Advanced Composite Test System Inspectors.

-Work flow is as follows: Clean, Predisassembly, NDI, E&E, Disassembly, Sand, PMB, Water Rinse, Bond, Post Bond, Paint, Whirl Tower testing.

-All personnel are respirator qualified. The Respirator Protection Program is administered by the FRCE

Safety Office. Personnel receive annual training and fit-testing. Annual medical surveillance physicals are scheduled by employee birth date. Facilities are available for cleaning and storing respirators.

-In the brush anodizing process, a solution containing 10% chromium trioxide is applied to the 53E tail blade leading edges and pocket areas with a hand probe and stylus. Brush anodizing is performed on approx. 10 blades per quarter. Blade spars are either placed in a ventilated downdraft trough where a warm (85 F) anodizing solution is washed over the blades or in an unventilated trough where an electrical current is run through the blade (30v at 8 amps) as part of the plating process.

Work spaces : bldg 137 – autoclave and admin area, post bonding room (temp and humidity controlled, has mixing bench), pre bonding room (mixing table, glove box blasting cabinet, oven, delta sander, band saw), bldg 4037 – tip cap and tail blade work area, balance and break room, bonding room with downdraft table. Bldg 423 – laser blade stripper operation (one person). Bldg 4808 – V-22 program (not in full use yet). Buildings 1792, 1793, 1794 – blade testing and static and dynamic balancing operations.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

General shop/pneumatic tool operation – noise (repro)

Mostly brief and intermittent, but can be to 6 hours daily

32 earplugs and circumaural muffs, Unacceptable. Single hearing protection is required for these work tasks, as well as for nearby personnel

General shop/pneumatic tool operation – musculoskeletal stress

To 6 hours daily 32 Lifting aids, stands, hoists, SOP

Acceptable. Interviews with personnel did not indicate any significant problems.

Acid wash chromium plating - This work is now gone.

Drain and fill Chromic acid tank - This work is now gone.

Brush anodizing of blades and tip-caps - eye, skin and inhalation exposure to hexavalent chromium compounds (10 percent chromium trioxide)

(carcinogen).. Accomplished using a portable unit for small jobs, utilizes a 24 to 30 volt current.

To 3 hours daily 3 Rubber aprons, Otto-fuel gloves, nitrile gloves, face shields, safety glasses, chemical splash goggles, tyvek suits, general and local exhaust ventilation, full-face respirator with combined

AM/P100

cartridges

Unacceptable. PPE must be utilized The cartridge used for this task should be an acid mist with p100 prefilter, not organic vapor filter. Combination acid mist, OV, and p100 filter cartridges are available to cover all needs in the shop.

Anodizing blade spars - This work is now gone.

Replacement of Chromic a.

solution in holding tanks - This work is now gone.

Brush anodizing of blade cuffs

- This work is now gone.

Mechanical Sanding/Grinding on Helicopter Blades in the

“Sand Pit” - eye, skin and inhalation exposure to fiberglass, hexavalent chromium compounds, lead (repro), and cadmium (repro, carcinogen).

Greases/hydraulic fluids, eye hazards, 8802 potting compound musculoskeletal stress handling

To 6 hours daily, up to 4 personnel use the facility at one time.

32 Local exhaust ventilation, bullard hood respirator, supplied air, safety glasses w/ss, kleenguard

A-60 full body suit, vented sanding tools, tyvek suit, cotton gloves, disposable nitrile gloves, double hearing protection.

Unacceptable. Use of ventilated tools has greatly reduced exposure potential, however due to the nature of the task continued use of ppe is

Results of air sampling since the introduction of new controls

(vacuum assisted tools) has resulted in exposure levels below the PEL set by 29 CFR 1910.1026, Hexavalent Chrome Standard. This process will contine to be monitored on a semi-annual basis.

Based upon these results, PPE selection will be reevaluated.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Mechanical Sanding/Grinding on Helicopter Blades in the

“Sand Pit” – noise, musculoskeletal stress.

To 6 hours daily 32 Single hearing protection, SOP for moving materials

Noise unacceptable. Single hearing protection is required.

Musculoskeletal stress must be managed by employees, by taking adequate breaks when completing a project.

Mechanical Sanding/Grinding on Helicopter Blades in the post bond and other areas – inhalation of dusts (aluminum, lead (repro), cadmium (repro, carcinogen), hexavalent chromium (carcinogen)).

Three times

Daily, 20 minutes each

32 Exhaust ventilated sanders, half face respirators with p100 filters, safety glasses with side shields, cotton gloves.

Acceptable. Historic sampling shows that exposure levels are below action levels for Cd, Pb and

Cr. Use of vacuum assisted tools required. Paint removal jobs should be done in sand pit.

Mixing and Pouring of foam filler – skin and inhalation exposure to isocyanate material

(TDI).

10 minutes each, 70 times per quarter, 200 grams per mix

32 General ventilation, safety glasses w/ss,tyvek jacket, nitrile gloves, half-face respirator with

OV cartridge

Acceptable based upon sampling results. Respirator recommended as precaution to unexpected work exposure events.

Applying adhesives and potting compounds to blades – skin and inhalation exposure to acetone, primer (xylene, (repro)), silane (MEK), pasa-jell 107, diethylenetriamine hardener, hexavalent chromium compounds (carcinogen).

40 min per occasion, 20 times per week

32 General ventilation, safety glasses w/ss,tyvek jacket, nitrile gloves, half-face respirator with

OV cartridge

Acceptable. Results from sampling for hexavalent chrome were below detectable limits.

Mixing and application of

EPON 828 and other resins -skin and inhalation exposure, rapid production of bisphenol-A-

(epichlorohydrin) (repro and carcinogen). 4 oz. prepared per occasion. Also used: DTA, LP3 and 9309 (slow set)

Mixing and application time limited to 25 min. (rapid set material). Mix 5 min., Fast set

(20 Min.)

6 General ventilation, safety glasses w/ss,tyvek jacket, nitrile gloves, half-face respirator with

OV cartridge

Acceptable due to general ventilation and small amount of material used.

Treatment of blade pocket seals with sealing compound – this work is now gone.

Use of band saw to cut honeycomb material – inhalation exposure to produced dust.

Less than 5 minutes each, up to 5 times a week.

32 Safety glasses, standard operating procedure, blade shield.

Acceptable. Honeycomb material is not hazardous; material produced is minimal, relatively large size particles.

Use of delta sander (has both disk and belt) – inhalation exposure to metal and composite dust.

Less than 2 minutes, up to 5 times a week.

32 Safety glasses, standard operating procedure.

Acceptable. Used for minor surface blemishes, short duration, materials not hazardous.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Use of portable sand bead blaster – inhalation exposure to silica and metal and composite dust.

Less than 5 minutes, 5 times a month.

32 standard operating procedure.

Acceptable. Machine has enclosed vacuum capture at point of use. All contaminant self contained. Jobs of more than 5 minutes are done in the outside walk-in blast booth.

Autoclave adhesive curing/water removal – thermal burns. Blades are placed in autoclave, connections are made, temperature and pressure is applied in a nitrogen atmosphere, for programmed length of time.

Once biweekly 6 Written SOP, leather gloves

Acceptable. Hot items are allowed to cool before touching them.

IBIS removal and replacement

– exposure to ionizing radiation

10 min. 80 times per quarter

32 SOP, safety glasses

Acceptable. The cover left on the device provides shielding, exposure to this beta radiation source is a low health hazard.

Leak test of helicopter blades – exposure to nitrogen and helium gases. Spars are pressurized with gas and pressure levels are monitored.

30 min test once daily

32 Ambient ventilation, safety glasses

Acceptable. No significant exposure was identified associated with this process.

Applying dry ice to blades for adhesive removal – skin exposure to cryogenic material.

Twice weekly 1 hour total

32 Thermal protective gloves, safety glasses, chemical goggles

Unacceptable. Artisan must use gloves and appropriate tools to move and apply dry ice.

Dynamic balancing, testing and balancing of helicopter blades at whirl test tower bldg.

1792 – noise, musculoskeletal stress, skin exposure to petroleum lubricant and hydraulic fluids.

2-3 hours daily 4 Earplugs or muffs, mechanical hoist, blade carts, nitrile gloves

Acceptable. No significant health problems were found. Materials are mild health hazards.

Static balancing of helicopter blades – noise, musculoskeletal stress, hand-arm vibration, skin exposure to petroleum lubricants

2-8 hrs. day, 3 days a week

8 Single hearing protection mechanical hoist, blade carts, nitrile gloves.

Noise and vibration acceptable, from pneumatic tool use.

Musculoskeletal stress acceptable.

Personnel reported no difficulties or injuries related to moving weights and blades.

Tip cap repair on rotor and tail blades – noise, hand-arm vibration, inhalation to metal dusts, pasajell 107, acetone, alcohol, and MEK. Caps are sanded, wiped with cleaner, bonding agent. Adhesive tape is applied.

4-6 hours per day, 2 days a week

8-10 Single hearing protection, earplugs, general ventilation, safety glasses s/ss, chemical splash goggles.

Acceptable. Small amounts of material for short duration of time.

Tip cap repair on rotor and tail blades – skin and inhalation exposure to hexavalent chromium(carcinogen). Brush applied primer (BR-127).

10 minutes, 3 times weekly

8-10 Single hearing protection, earplugs, general ventilation, safety glasses s/ss, chemical splash goggles.

Acceptable. Small amounts of material for short duration of time.

Tip cap repair, use of glass bead and PMB Glove box blaster to clean blade tip caps – inhalation exposure to silica.

10 min. per cap.

Used up to

Twice weekly

4 Enclosed process, standard operating procedure.

Acceptable, so long as machine is kept in good working order, no leaks, follow SOP.

STRESSORS AND

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Automated laser stripping system – noise, eye exposure to laser light, inhalation of vapor and particulate combustion products (chromium, carbon based materials). Class IV laser.

10 hours per blade, 12 blades per quarter

1 Shielding

(operator room), interlocks, SOP.

Laser safety glasses, automatic process controls.

Acceptable. Personnel can remain outside of the operation area while the process is working.

(currently this process is not being done.)

Materials handling: Moving lifting and maneuvering blades between work locations and around the shop – musculoskeletal stress.

20 to 40 min.

total daily

28 Lifting aids, crane, carts, dollies, SOP training

Acceptable. Work routines are established. Except for unusual circumstances, the hazards are known and mitigated.

Use of curing ovens – components are placed in one of several ovens and left at a set temperature for a set period of time. Thermal burns. 150 to 266 degrees F.

Once biweekly 20 Written SOP, leather gloves

Acceptable. Hot items are allowed to cool before touching them.

Administrative tasks – musculoskeletal stress, lighting.

Tracking shop information involves repetitive keyboard work.

8 hrs daily 3 Properly designed furniture, ergonomic awareness training.

Acceptable. No significant concerns were found.

Exposure Monitoring – due to the fact that the sand pit has shown to be a work location where employees may be potentially exposed at or above the PEL for hexavalent Chrome, it will be sampled only as needed. Use of vacuum assisted tools has greatly reduced the potential for exposure to this contaminant. Sampling needs to be done for changing chromic acid solution in the blade anodization tanks, however this process is presently not done, the tanks are empty.

Recommended Medical Surveillance Programs – Isocyanates (196), respirator user (716), chromic acid/chrome VI (133).

EXPOSED ABOVE THE SELECTED OEL.

UNCERTAIN – ADDITIONAL DATA NEED TO BE COLLECTED TO CLARIFY THE EXPOSURE ASSESSMENT. THE

IH SHOULD MAKE AN INTERIM EXPOSURE ASSESSMENT BASED ON OBSERVATION OF THE PROCESS AND/OR

PROFESSIONAL JUDGMENT.

UNACCEPTABLE – ONE WHERE THE IH WILL EXPECT THE SEG TO BE EXPOSED ABOVE THE SELECTED OEL.

SKIN -- THE MATERIAL POSES A SKIN ABSORPTION HAZARD

REPRO HAZARD – THE MATERIAL IS A NAVY-RECOGNIZED REPRODUCTIVE HAZARD

Activity:

FRCE Supv./Phone: Douglas Ford/7937 Log #: 16v-212

Shop:

94304 Rotor Blade Bldg. 137

SECTION III – HOOD SYSTEM/EVALUATION (Sand Pit)

Contaminant(s) Controlled: Chromium VI

(Not to scale)

OVERHEAD VIEW OF THE "SAND PIT"

Left

Side -

Dust

Collect and

Exhaust

REAR

WALL

DOORS

Right

Side - Dust

Collectors and Exhaust

OVERHEAD

SUPPLY

AIR

Measurements

SYSTEM #

137D-169

CAPTURE VELOCITY

(FPM) AT 3 FT FROM

WALL

RECOMMENDED

CAPTURE AIR

VELOCITY (FPM)*

AIR CURRENT

(smoke tube)

#1 L 207 150-200 Moderate

#2 L 222 150-200 Moderate

#3 L 191 150-200 Moderate

#4 L 230 150-200 Moderate

#5 L 163 150-200 Moderate

#6 L 260 150-200 Moderate

#1 R 274 150-200 Moderate

#2 R 203 150-200 Moderate

#3 R 250 150-200 Moderate

#4 R 440 150-200 Moderate

#5 R 500 150-200 Moderate

#6 R 390 150-200 Moderate

Booth average

277 150-200 N/A

Negative airflow measured at door, opened 2 inches: 630 ft/min. (>787 cfm)

SECTION IV - COMMENTS: - Recommended air velocity, per ACGIH Ventilation Manual, 25th Ed., Chapter 3, 3.8.3.

Surveyed by: Ralph Rhodes Date: 8 Dec 2015

Table 2

Compliance Controls for Pit Sanding & Outside Booth Sanding Operations

Control Hazard is CrVI

Engineering Controls

(ventilation) R

Regulated Area (No food, drink, tobacco, gum, or cosmetics) R

Barrier R Signs R

Respirator R Coveralls R Tyvek (hooded) R Booties R Handwashing facilities R Break Area R Housekeeping R

All surfaces as clean as practicable R

Spills/releases cleaned ASAP R HEPA vacuum for cleaning R Sealed, labeled Containers for

Waste Disposal R

Hygiene Facilities R Shower after shift 3

Key: R=Required 3=Recommended

-Contact the FRCE Safety Office for further information or questions regarding compliance with the OSHA

Chromium VI standard, 29 CFR 1910.1026

*Do not use compressed air for cleaning!

EXPOSURE MONITORING

Organization: FRC EAST PROCESSING DYNAMIC COMPONENTS BRANCH