Attachment_04e_2015_IHS_of_941(5)(6)(8)_Branch.pdf

2015 PERIODIC INDUSTRIAL HYGIENE SURVEY

OF

6.2.3.2/3/4/6

(941/5/6/8) AVIONICS/MECH/ELEC/ORD/INSTR BRANCH

INDUSTRIAL HYGIENE DEPARTMENT

NAVAL HEALTH CLINIC

CHERRY POINT, NC 28533-0023

Enclosure (8)

TABLE OF CONTENTS

Page

Executive Summary ....................................................................... Error! Bookmark not defined.

Evaluation Summary ...................................................................... Error! Bookmark not defined.

94200 Training - Solder School ..................................................... Error! Bookmark not defined.

94105 Electrical and Wire Manufacturing Shop ........................... Error! Bookmark not defined.

94802 Instruments Shop, Electrical Shop (94105b) ...................... Error! Bookmark not defined.

94501 A/B, SYS/Avionics & ATE Communication, Navigation & Ident. (CNI) Shop ....... Error!

Bookmark not defined.

94501 A .................................................................................. Error! Bookmark not defined.

94501 B ................................................................................... Error! Bookmark not defined.

94106 Ordinance/Survival Equipment/Cryogenics ....................... Error! Bookmark not defined.

Ordnance and Survival ........................................................... Error! Bookmark not defined.

Cryogenics .............................................................................. Error! Bookmark not defined.

94607 Fiberglass & Plastics Trade, canopy repair, sewing shop, Advanced composite material, Dynamic Components .................................................................... Error! Bookmark not defined.

Glossary of Terms Appendix A

Customer Satisfaction/Complaint Form Appendix B

EXECUTIVE SUMMARY

The periodic industrial hygiene survey of 6.2.3.2/3/4/6 (941/5/6/8) 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 2013. 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 (941/5/6/8) Branch are as follows:

There were no findings for the work spaces that could not be addressed at the shop level.

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 C. 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.

Design Review: Industrial hygienists are required to actively participate in all facility planning, design, construction, and acceptance projects including both special and military construction projects to ensure appropriate hazard control techniques are applied. Please ensure all special projects, engineering designs, and purchasing contracts involving potential health hazards such as toxic materials, radiation, noise, or other health hazards are sent to the Industrial Hygiene

Department for review.

EVALUATION SUMMARY

PERIODIC INDUSTRIAL HYGIENE SURVEY

6.2.3.2/3/4/5/6/8

(941/5/6/8) AVIONICS/MECH/ELEC/ORD/INSTR 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

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: Shop personnel are potentially exposed to harmful physical, biological, and chemical agents as well as noted reproductive hazards and carcinogens. Personnel are required to receive hazard training in accordance with OPNAVINST

5100.23G.

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:

6. Ventilation:

Are ventilation systems used to control workplace exposures? Y N

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

Comments: some of the vent systems for 94802 were not measured because they are temporarily off-line until renovation work has been completed in the work space.

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: Ergonomic design of furniture was not optimal, however no musculoskeletal issues were found due to short durations and minimal repetition of work tasks. Most materials handling stressors are known and mitigated by use of lifting devices and safe manual lifting methods. There were no significant musculoskeletal issues found during the 2015 survey.

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. Personnel report that as part of their training for soldering, they are familiar with the information on lead health hazards found in “Appendix A” of 29 CFR 1910.1025, the OSHA Lead

Standard. 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:

None.

Additional Comments: Personnel demonstrated an active interest in promoting an effective health and safety program. Steady overall improvement in the work environment was observed.

INDIVIDUAL HAZARD ASSESSMENT Date: December 2015

Industrial Hygienist: Ralph Rhodes

Organization: FRC East – Avionics/Mech/Elec/Ord/Inst. Branch

941/5/6/8

Building Number: 4034

Shop (WC)/Code: 94200 Solder School

Supervisor: Dean Crabtree

Phone: 7415

Total Personnel, M/F: 1, 0/1

GENERAL SHOP OPERATIONS: The instructor assigned to this shop is responsible for training all applicable areas of FRCE and upon request to Air Station personnel in Navy approved avionics soldering techniques. Classes are held approximately 3 weeks out of every month and are designed for a maximum of eight students. Instructors provide initial certification and recertification in pencil-type soldering with tin/lead solder. Courses vary in length some as short as 2 ½ days, and others are 2 weeks or longer.

Silver soldering and hermetic sealing/soldering courses are taught based on the demand. Each course lasts approximately one full work day. All personnel who solder at FRCE come here for re-certification every 1 or 2 years, depending upon the technical requirements of their jobs.

-Solder certification and re-certification training is conducted using 60/40 tin/lead solder, 63/37 tin/lead

Solder, and cadmium-free silver solder. The instructor maintains rolls of 60/40 solder and provides pieces to students in small solder kits. 60/40 solder is heated to a temperature of 360ºF to plastic state.

This temperature is not sufficient to create lead fume. 63/37 tin/lead solder (solder paste) is applied automatically from a dispenser with minimal contact. The solder is heated with hot air.

-When conducting silver soldering, a propane torch is sometimes used in order to heat the solder and to reach the required higher melting temperatures (e.g. up to 1435 degrees Fahrenheit). Hermetic sealing/soldering is performed to create an airtight seal on larger pieces of equipment such as avionic instrument cases. Personnel position strips of tin/copper foil tape around the area of instruments to be soldered. They use 60/40 solder with a 300 watt solder iron to solder the band and the instrument case exterior to create an airtight environment. Both silver and hermetic soldering courses are one day duration, and the actual solder time is intermittent up to four hours duration. Both silver and hermetic soldering is performed on workbenches in the front of the classroom; local exhaust ventilation is used from the nearby workstations. The instructor also reviews a “Solder Pot” process that is only performed by one shop (Aircraft Wiring and Verification Shop). Students do not actually perform this process.

-The instructor spends approximately 3-4 hours per day in the soldering areas teaching and demonstrating the soldering techniques and actual soldering is performed intermittently throughout the work shift. The soldering classes include training on the health hazards associated with working with lead, as per 29 CFR

1910.1025, Appendices A and B. Students are trained on utilizing good personal hygiene practices to minimize the potential lead ingestion hazard. Lead hazard warning signs are also posted within the interior of the class room. Adequate hygiene facilities are readily available and used. No eating or drinking is permitted at workstations where soldering takes place.

-Each student is issued a 6 oz. bottle of isopropyl alcohol. A few drops are applied by cotton swab or acid brush to clean flux residue off components or to clean electrical contacts. Rosin 640 flux is applied with an acid brush around the solder site to prevent oxides from separating the solder from the surface. A minor amount of brazing flux paste (borax) is applied during silver soldering processes. The instructor and students also use Loctite 0151 (Resin and hardener) to refill damaged sections of circuit cards/boards, so the boards can be re-utilized. Only minor amounts of Loctite are applied and no ill health effects are expected during use. Once the resin and hardener is applied, the boards are cured in a large shop oven.

Heat resistant gloves are readily available and used.

-All soldering operations are conducted at workstations using adequate local exhaust ventilation. Eight student work stations are equipped with local exhaust vent units. The results of the ventilation system evaluations are included at the end of this report. All 8 of the tin/lead & silver soldering station systems were found to be functioning adequately; however, effective smoke capture depends upon each student properly positioning the cone-shape hood no more than 4” away from the soldering site.

HEALTH HAZARDOUS

STRESSORS AND

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

WORKERS

CONTROLS

EXPOSURE

ASSESSMENT (1)

Soldering training - inhalation and ingestion of lead (repro) by instructor and students. (60/40 solder, silver solder, 63/37 tin/lead solder (solder paste)

Daily to 6 hours 1

Safety glasses, Local exhaust hoods, training, housekeeping, SOP

Acceptable. Materials used in small amounts and brief duration.

Soldering training - skin, inhalation and ingestion of solder flux and combustion products.

(Orthodontic resin, Mineral Oil, Rosin 640 Flux, Brazing Flux

(Borax), isopropyl alcohol, Loctite, 0151 Hysol)1 to 5gm.

Each Used per occasion.

Up to 1 hour total, intermittently throughout the day

1 Safety glasses, Local exhaust hoods, training, housekeeping, SOP

Acceptable. Materials are mild irritants, small duration of use.

Observations: A new drain has been installed for the eyewash.

Recommendation: none.

Exposure Monitoring – none required.

Recommended Medical Surveillance Programs – None.

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

NAVAL HOSPITAL, CHERRY POINT, NC 28533-0023

VENTILATION HOOD/SYSTEMS EVALUATION

ACTIVITY: FRC East Supv./Phone: Dean Crabtree/7415 Log #: 14v-207

SECTION I - Hood/System Location: Electronic Calibration, Verification, and Electronics Training Classroom

Shop: 94105 Bldg: 137

SECTION II – INSTRUMENTATION

Make: TSI S/N: 8005 Model: 9535 Cal. Date: May 2013

SECTION III - HOOD/SYSTEM EVALUATION:

Contaminant(s) Controlled: solder flux and metal fume

SYSTEM DIAGRAM (Not to scale)

MEASUREMENTS

WORK BENCH

NUMBER

CAPTURE VELOCITY

(FPM AVG) at face

*RECOMMENDED

FACE VELOCITY (FPM)

AIR CURRENT

FLOW (Smoke tube)

2013 2012 2011

#1 2380 2050 2302 2000 Rapid

#2 2890 1800 1846 2000 Rapid

#3 2280 2200 2459 2000 Rapid

#4 3170 3550 2549 2000 Rapid

#5 2580 3000 2926 2000 Rapid

#6 2440 2400 2381 2000 Rapid

#7 2900 3400 2413 2000 Rapid

#8 2730 3500 2201 2000 Rapid

SECTION IV - COMMENTS: Room was unavailable for measurement during the current 2015 survey.

*Recommended capture velocity per ACGIH Ventilation Manual, 25th Ed., Table 3-1: with contaminant release at practically no velocity into still air. There are eight student workbenches, each with a dedicated exhaust unit. The cone-shape hoods should be placed no more than 4” over the soldering work to provide adequate exhaust for the task performed. Due to the fact that at 4 inches air flow readings varied greatly, measurements were taken at the face of the opening. Ensure that the damper is open on each vent arm.

Surveyed by: Ralph Rhodes Date: 15 December 2015

Work desk

Articulated arm with attached flexible cone hood

Organization: FRC East – Avionics/Mech/Elec/Ord/Inst. Branch

941/5/6/8

Building Number: 137

Shop (WC)/Code: 94105 Electrical Manufacturing Shop

Supervisor: Dennis Vary

Phone: 7082

Total Personnel, M/F: 21, 19/2. 7 of these work in the cable shop. There are also 2 from Production Control, 1 task manager

GENERAL SHOP OPERATIONS: tests, orders parts, repairs and retests a variety of aircraft electrical components such as generators, actuators, power supplies, and other various rotating and mechanical components (e.g. DC motors, starters, exciters, etc).

The shop is divided into a front and back section, separated by a wall and door. Ventilated booths and industrial operations are confined to the back of the shop. Bench work, disassembly, light soldering and assembly are done in the front section. When they have a need to work in the back section, employees spend a maximum of 4 hours for the day. They generally spend less than 30 percent of their total work time in the back, and 15 percent for most of the time.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Shop work - noise exposure

(back section only). Compressed air, test bench run up of equipment, varsol spray booth, PMB and Alum. Oxide blast booths, glove box parts washer, duraclean parts washer

Daily 25 percent of time in noise hazardous area, in the back of the shop

14 Single hearing protection (ear muffs or plugs), training

Unacceptable. Noise level readings for these operations range from 84 dBA to 96 dBA. Single hearing protection required. Continue noise medical surveillance program, hearing conservation program training

Pencil soldering - inhalation and ingestion of solder flux and combustion products. (flux remover) 1 to 5gm. Each Used per occasion. 60/40 and 95/5 tin-lead solder and 50/50 (“high-temp” soldering), 5 to 10 min a day per individual

14 Safety glasses w/side shields, Local exhaust hoods, training, housekeeping, SOP

Acceptable, based upon sampling results for similar operations.

Materials are mild irritants, small duration of use.

Pencil soldering - inhalation and ingestion of lead.1 to 5gm.

Each Used per occasion.

5 to 10 min a day per individual

14 Safety glasses w/side shields, Local exhaust hoods, training, housekeeping, hand washing facilities SOP

Acceptable based on sampling similar operations. Materials used in small amounts, short duration of use. Posted lead hazardous area

Silver solder and high temp soldering – inhalation or ingestion of lead, silver and cadmium. Removing and resealing solder seals with propane torch

15 min. to remove, 20 to resolder once every 3 months

3 Above, plus

Dedicated work station with local exhaust ventilation, training

Acceptable due to local vent, short duration of exposure and good hygiene work practice. Ventilation evaluated and found to be satisfactory. Recommend hood position 4 in from work.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Glove box blasting operations -inhalation exposure to Lead, cadmium, hexavalent chrome.

Plastic media booth and aluminum grit booth.

5 to 30 min per use, 4 times a day average.

14 Self-contained operation. Training.

SOP, plumbed eyewash station available nearby.

Acceptable. Historical personal sampling results for these contaminants were found to be well below exposure limits.

Ensure that equipment is properly maintained.

Component cleaning – inhalation and skin exposure to duraclean 282 and varsol.

Cleaning parts in varsol booth and duraclean parts cleaner.

Up to 60 min per day, per person.

14 Local exhaust ventilation, SOP, nitrile gloves

Acceptable. Exposure limited

Below permissible levels through appropriate PPE, ventilation. Material is mild irritant.

Changing and adding duraclean solution to parts washer – skin and eye exposure to concentrated formula (10-30%

Sodium Xylene Sulfonate, 1-

10% polyethoxylated alcohol, 1-

10%, Potassium Silicate, < 1%

Potassium Hydroxide) .

20 minutes monthly

3 Nitrile gloves, rubber splash apron, chemical goggles

Acceptable. Limited exposure potential. Material is an irritant.

Aerosol can application of paint - Eye, skin and inhalation exposure to Toluene & xylene

(repro hazards) and VM&P

Naphtha, (Enamel, lacquer) So sure 20 oz. can, 12 cans/mo, (naphtha)

Less than 30 min per day per person

14 Paint spray booth Acceptable based upon personal sampling for this operation.

Aerosol Can Application of primer – inhalation exposure to

Lead Chromate (repro hazard, carcinogen) So sure 20oz. spray can, 4 per month. Personnel have received training on

Chromate hazards.

Less than 30 min per day per person

14 Paint spray booth Acceptable based upon personal sampling for this operation.

Component bonding and sealing – skin exposure to hot parts. Removing parts from 190 or 290 degree oven

5 to 30 min.

daily

14 Heat resistant gloves

Acceptable. Proper work methods and gloves effectively prevent significant exposure.

Component bonding and sealing – skin and inhalation exposure to petroleum lubricants, sealants, epoxy resin, isopropyl alcohol, 5 to 30 min.

daily

14 General ventilation, nitrile gloves

Acceptable. Material is mild irritant.

LCT motor brake pad repair – inhalation exposure to asbestos

(carcinogen). Filing 1 in.

diameter brake disks.

15 min, less than

10 times per month

1 Acceptable based upon operation details and low potential for fiber exposure. Very little material released.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Lifting components of 50 lbs or greater – Musculoskeletal stress.

Forklifts and electric hydraulic lifts are available to lift heavier equipment.

15 min a week total.

14 Training, lifting aids

Acceptable. Difficult tasks are known and lifting methods are utilized to mitigate risk for injury.

No significant problems were found.

Observations: The shop has a newly approved break area.

Recommendation: none for 2015. The following are carried over from the last survey for reference:

Eye hazards in the front of the shop are brief, confined to worker’s bench, and relatively mild risk (no high RPM processes, flying abraisive material). Protective eyewear is recommended for each artisan for the duration of eye hazardous tasks. The eye hazardous conditions for these process are hazardous for the artisan only, not other work stations in the room. No eye related injuries have been reported for the shop. Supervisor and production control spaces have no eye hazardous operations. Protective eyewear is still recommended for the back section of the shop, including the room with the glove box and industrial vent booths.

With the exception of occasional, short, brief releases of soldering combustion vapors, no processes that would produce airborne contaminants such as dusts or vapors were found in the front part of the shop.

Recommended Medical Surveillance Programs – Noise (503).

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

Cable shop

STRESSORS AND

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Component bonding and sealing

– skin and inhalation exposure to petroleum lubricants, organic solvents, toluene, sealants, isopropyl alcohol, 3145 RTV sealant, corrosion preventing compound, Less than 100 ml each., epoxy resin (75 & 100 ml.)

5 to 30 min.

daily

7 General ventilation, nitrile gloves

Acceptable. Materials are mild irritants. Toluene exposure is not significant under normal use.

Incoming wire inspection – musculoskeletal stress. Lifting of wire spools. 90 percent to 15 lbs, 10 percent to 50 lbs. tests include dimensions, continuity, solder ability, thermal, megohmeter, and impulse dielectric/spark test.

To 6 hours a day, one day a month

7 Lifting methods, safety glasses with side shields

Acceptable. Proper work methods effectively prevent significant stress.

Cable marking – eye exposure to non-ionizing radiation (laser).

Cable is fed through a machine that marks it with laser light.

To 8 hrs. daily 2 Safety interlocks

Acceptable. No significant opportunity for laser light exposure was identified in the survey.

Enrollment into laser medical surv.

Program required due to providing assistance during machine servicing by the company.

Thermocouple probe harness cleaning, inspection and testing operations – skin and inhalation exposure to isopropyl alcohol, high temperature (1200 degrees). Probe harnesses are cleaned and voltage tested at high heat.

30 or 40 min.

per probe, 3 or 4 times a week

1 to 4 Local exhaust ventilation, SOP, nitrile and heat resistant gloves

Acceptable. Exposure limited

Below permissible levels through appropriate ppe, ventilation.

Material is mild irritant.

Component bonding and sealing

– skin and inhalation exposure to petroleum lubricants, organic solvents, toluene, sealants, isopropyl alcohol, 3145 RTV sealant, corrosion preventing compound, Less than 100 ml each., epoxy resin (75 & 100 ml.)

5 to 30 min.

daily

7 General ventilation, nitrile gloves

Acceptable. Materials are mild irritants. Toluene exposure is not significant under normal use.

Cable shop

STRESSORS AND

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Pencil soldering, desoldering -inhalation and ingestion of solder flux and combustion products, zinc chloride, (flux remover) 1 to 5gm.

Each Used per occasion. 60/40 and

95/5 tin-lead solder and 50/50

(“high-temp” soldering), 5 to 10 min a day per individual

7 Safety glasses w/side shields, Local exhaust hoods, training, housekeeping, SOP

Acceptable. Materials are mild irritants, small duration of use.

Pencil soldering - inhalation and ingestion of lead.1 to 5gm. Each

Used per occasion.

5 to 10 min a day per individual

7 Safety glasses, Local exhaust hoods, training, housekeeping, hand washing facilities SOP

Acceptable based on sampling similar operations. Materials used in small amounts, short duration of use. Posted lead hazardous area

Noise producing and eye hazard shop operations - noise greater than 84 dBA, less than 104 dBA.

Cable braiding machine is operated by a foot pedal, can exceed 84 dBA sound levels. Nail pounding on form boards for layout of cable harness assembly.

10 to 30 min a day, occasionally to 6 hours per individual

7 Single hearing protection (ear plugs or ear muffs).

Safety glasses w/side shields

Unacceptable for noise. Single hearing protection must be worn by operator and individuals nearby for duration of task.

Harness assembly -musculoskeletal stress. Harness created by stringing and trimming wire on plywood pattern.

10 min to 6 hours a day.

7 Training, adequate rest time

Acceptable based on personal interview. Repetition and forces are not constant enough to cause discomfort. Operating wire crimping tool was found to be the most stressful task. May not be suitable for persons with arthritis or joint problems.

Glove Box Cleaning Operation – Detergent solution (replaced by hazmat on a PM cycle).

15 min. 2 to 5 times daily for shop

7 Safety glasses with side shields, enclosed process

Acceptable, based upon materials used.

Aerosol can spray painting with chromate primer – inhalation exposure to Lead Chromate (repro hazard, carcinogen) So sure 20oz.

spray can, 4 per month. Personnel have received training on Chromate hazards

Less than 30 min per day per person

7 Paint spray booth, single hearing protection

Acceptable based upon personal sampling for this operation.

Aerosol can spray painting with lacquer and enamel paints –Eye, skin and inhalation exposure to

Toluene & xylene (repro hazards) and VM&P Naphtha, (Enamel, lacquer) So sure 20 oz. can, 12 cans/mo, (naphtha)

Less than 30 min per day per person

7 Paint spray booth, single hearing protection

Acceptable based upon personal sampling for this operation.

Recommendation: None.

Recommended Medical Surveillance Programs – Noise (503), #506 - Radiation-Laser (Class III+IV) one person.

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

NAVAL HEALTH CLINIC, CHERRY POINT, NC 28533-0023

Activity: FRCE Supv./Phone: Dennis Very/7082 Log #: 16v-191

SECTION I – HOOD/SYSTEM LOCATION

Shop: 94105 Cable shop Bldg. 137

SECTION II – INSTRUMENTATION Make: TSI S/N: 9009 Model: 9565P Cal. Date: Jan 2015

SECTION III – HOOD SYSTEM/EVALUATION

Contaminant(s) Controlled: Cadmium Free Silver Soldering Fume, Lead/Tin Fume and Antimony/Tin

Fume

SYSTEM DIAGRAM

(Not to scale)

HOOD # DIMENSIONS

(FT)

FACE

AREA (SQ

FT)

CAPTURE

VELOCITY

(FPM- AVG)

RECOMMENDED

CAPTURE

VELOCITY*

(FPM)

AIR CURRENT

FLOW

(Smoke tube)

136-C79 8 x 4 16 180 100-200 n/a

SECTION IV - COMMENTS: Ventilation readings were taken at the front at 34" from the face of the hood. This meets recommendation, per ACGIH Ventilation Manual, 25th Ed., (pg.10-154/ Figure VS-90-01)

Surveyed by: Ralph Rhodes Date: 11 Dec 2015

X=34”

ACTIVITY: FRC East Supv./Phone: Dennis Very/7082 Log #: 16v-188

SECTION I Hood/System Location: ELECTRIC SHOP Shop: 94105A Bldg: 137

SECTION III - HOOD/SYSTEM EVALUATION: Contaminant(s) Controlled: CHROMATES AND PAINTS

(ORGANIC SOLVENT) (137-C5)

SYSTEM DIAGRAM (Paint Booth)

HOOD#

DIMENSIONS

(FT)

FACE AREA

(SQ FT)

CAPTURE

VELOCITY

(FPM) (Avg)

RECOMMENDED

FACE VELOCITY

*(FPM)

AIR CURRENT

FLOW

(Smoke Tube)

137-C5 3.25 x 3.75 12 280 100 n/a

SECTION IV - COMMENTS: *Per ACGIH VENTILATION MANUAL, 25th ED., Pg. 10-115. Paint filters are heavily coated with paint/primer residue.

Surveyed by: Ralph Rhodes Date: 4 December 2015

ACTIVITY: FRC East Supv./Phone: Dennis Very/7082 Log #: 16v-189

SECTION I Hood/System Location: ELECTRIC SHOP Shop: 94105 Bldg: 137

SECTION III - HOOD/SYSTEM EVALUATION: Contaminant(s) Controlled: STODDARD SOLVENT

SYSTEM DIAGRAM (Varsol Booth)

(FT)

FACE AREA

(SQ FT)

CAPTURE

VELOCITY

(FPM) *(Avg)

RECOMMENDED

CAPTURE

VELOCITY

*(FPM)

AIR CURRENT

FLOW

137-C6 4.0 x 4.5 18 130 100 n/a

SECTION IV - COMMENTS: Exceeds recommended capture velocity per ACGIH VENTILATION MANUAL, 25th

ED., Pg. 10-115. The mounted, angled metal plate in the center serves as a spray shield with the open exhaust duct behind

it. There are no filters. This system is adequate to control listed contaminants.

Surveyed by: Ralph Rhodes Date: 4 December 2015

ACTIVITY: FRC East Supv./Phone: Dennis Very/7082 Log #: 16v-190

SECTION I Hood/System Location: ELECTRIC SHOP Shop: 94105 Bldg: 137

SECTION III - HOOD/SYSTEM EVALUATION:

Contaminant(s) Controlled: HEATED PAINT SOLVENT

(FT)

FACE AREA

(SQ FT)

CAPTURE

VELOCITY

(FPM) *(Avg)

RECOMMENDED

CAPTURE

VELOCITY

*(FPM)

AIR CURRENT

FLOW

(Smoke Tube)

137-C118 3.0 x 3.0 9 *10 face, 105 duct opening

100 n/a

SECTION IV - COMMENTS: *Per ACGIH VENTILATION MANUAL, 25th ED., Pg. 10-115. Air flow is below the recommended velocity.

ACTIVITY: FRC East Supv./Phone: Dennis Very/7082 Log #: n/a

SECTION I - Hood/System Location: ELECTRIC SHOP Shop: 94105A Bldg: 137

SECTION III - HOOD/SYSTEM EVALUATION: Portable PACE FUME EXTRACTOR with Flanged Hood

Contaminant(s) Controlled: 60/40 TIN/LEAD, SILVER SOLDERING FUME

SYSTEM DIAGRAM (not to scale)

HOOD CAPTURE VELOCITY FPM

(AVG)

*RECOMMENDED

CAPTURE VELOCITY

(FPM)

AIR CURRENT FLOW

(Smoke Exhaust)

PACE Arm-

Evac 500 fume hood

Not working 100 – 200*

SECTION IV - COMMENTS: filter condition indicator – 100 %

*Per ACGIH VENTILATION MANUAL, 25th ED., Table 3-1, released at low velocity into moderately still air.

This is a Pace portable fume extractor that has been reduced from two exhaust arms to one. The flexible exhaust hose is movable along with the table vise used to hold the part (not pictured). The exhaust hood must be located 4” or less from the soldering tool in order to meet the recommended capture velocity.

Surveyed by: Ralph Rhodes Date: 04 December 2015

Organization: FRC East – Avionics/Mech/Elec/Ord/Inst. Branch

941/5/6/8

Building Number: 137, 4224 (temporary)

Shop (WC)/Code: 94802, Instruments and Electrical Shop

Supervisor: Kathy Ducharme

Phone: 7946

Total Personnel, M/F: 10, 7/3

GENERAL SHOP OPERATIONS: Shop 94802 (94105B) manufactures and repairs a full range of cable harnesses including compact wire bundles and coaxial and tri-axial cables. They also repair, modify, overhaul, and test deicer rings, fuel panels, light assemblies, throttle quadrants, electrical panels, control sticks, thermocouples, and many other aircraft components. They support several platforms of aircraft, which include H-53, CH-46, AV-8, and H-60. Supervisor reports that there is no work being done outside of the shop area.

Instrument Shop

STRESSORS AND

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Assembly, disassembly, troubleshoot – hand tools, dental picks.

80 to 90 percent of work time

10 Safety glasses w/side shields

Acceptable. No significant health exposures identified.

Pencil soldering, desoldering -inhalation and ingestion of solder flux and combustion products, zinc chloride, (flux remover) 1 to 5gm.

Each Used per occasion. 60/40 and

95/5 tin-lead solder and 50/50

(“high-temp” soldering), 5 to 10 min a day per individual, Several times a day for labor intensive circuit boards.

10 Safety glasses w/side shields, Local exhaust hoods, training, housekeeping, SOP

Acceptable. Materials are mild irritants, small duration of use.

Pencil soldering - inhalation and ingestion of lead.1 to 5gm. Each

Used per occasion.

5 to 10 min a day per individual

10 Safety glasses, Local exhaust hoods, training, housekeeping, hand washing facilities SOP

Acceptable based on sampling similar operations. Materials used in small amounts, short duration of use. Posted lead hazardous area

Silver solder and high temp soldering, use of solder pot – inhalation or ingestion of lead, silver and cadmium (carcinogen).

Removing and resealing solder, dipping leads into molten solder pot. No new Cadmium parts, potential for old ones on equipment.

15 min. to remove, 20 to resolder once every 3 months

10 Above, plus

Dedicated work station with local exhaust ventilation, training

Acceptable due to local vent, short duration of exposure and good hygiene work practice.

Ventilation evaluated and found to be satisfactory. Recommend hood position 4 in from work.

Aerosol can spray painting with chromate primer – inhalation exposure to Lead Chromate (repro hazard, carcinogen) So sure 20oz.

spray can, 4 per month. Personnel have received training on Chromate hazards

Less than 30 min per day per person

10 Paint spray booth, single hearing protection

Acceptable based upon personal sampling for this operation.

Instrument Shop

STRESSORS AND

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Conforming coating removal

(CCR 2000) – plastic bead glove box blast booth, UV light.

½ to 2 hours per day.

10 Enclosed operation

Acceptable. No significant health hazard identified.

Aerosol can spray painting with lacquer and enamel paints

–Eye, skin and inhalation exposure to Toluene & xylene

(repro hazards) and VM&P

Naphtha, (Enamel, lacquer) So sure 20 oz. can, 12 cans/mo, (naphtha)

Less than 30 min per day per person

10 Paint spray booth, single hearing protection

Acceptable based upon personal sampling for this operation.

Service instrument bearings – remove, clean, inspect, lubricate and replace bearings. Clean room is used. Skin and inhalation exposure to engineering fluid (organic solvent) and machine oil.

3 days a month on average

4 Safety glasses, nitrile gloves

Acceptable. – normally there is no skin contact with the fluid.

(This process is currently not being done.)

Change cleaning solution, bearing cleaner - Skin and inhalation exposure to engineering fluid (organic solvent)

30 minutes, twice a year

1 Safety glasses, rubber apron, nitrile gloves

Acceptable – process requires no skin contact.

(This process is currently not being done.)

Induction heater, facilitate instrument disassembly - risk of skin burn. Cylindrical 900 degree heater heats instrument case to facilitate its removal

20 times a year per person, 1 to

5 minutes per occasion

4 High temperature gloves, standard operating procedure.

Acceptable – controls effectively prevent skin contact.

Use of belt sander to condition soldering pencil tips – hold tip against sander to remove deposits.

One minute twice a month

10 Safety glasses Acceptable – no significant health hazard identified.

Purging and filling instrument case with nitrogen, helium, or combination – gas is flowed into casing and the casing is sealed.

10 minutes 5 times weekly

10 Safety glasses Acceptable – gases are inert, low pressures involved.

Observations: No significant changes since the last survey.

Recommendation: None.

Activity: FRCE Supv./Phone: Kathy Ducharme /7946 Log #:16v-192

SECTION I – HOOD SYSTEM LOCATION

Shop: 94802 – Instruments Shop Bldg: 137

SECTION III - HOOD/SYSTEM EVALUATION

Contaminant(s) Controlled: Zinc Chromate, Organic solvent, Toluene, MEK

MEASUREMENTS:

HOOD# DIMENSIONS

(FT)

FACE

AREA

(SQ FT)

CAPTURE

VELOCITY

AVERAGE (FPM)

RECOMMENDED

CAPTURE

VELOCITY* (FPM)

AIR CURRENT

FLOW

137-C56 2.7 x 3.4 9.23 288 100 n/a

SECTION IV - COMMENTS: *Ventilation system meets recommended capture velocity per ACGIH Ventilation

Manual, 25th Ed., (Figure VS-75-02, Small Paint Booth). Average of measurements taken across face of booth.

Activity: FRCE Supv./Phone: Kathy Ducharme /7946 Log #:16v-193

SECTION I – HOOD SYSTEM LOCATION

Contaminant(s) Controlled: organic solvent, methylene Chloride

LEFT C54 RIGHT C55

X1 X2

HOOD # FACE AREA

(SQ FT)

PER HOOD

AVERAGE CAPTURE

VELOCITY (FPM)

RECOMMENDED

CAPTURE

VELOCITY*

(FPM)

AIR CURRENT

FLOW

(Smoke Tube)

137-C54 18.0 X1 = 136 100 n/a

137-C55 18.0 X2 = 101 100 n/a

SECTION IV - COMMENTS: *Measurements collected at each of 2 solder stations positioned approximately 1 ft from exhaust slots (the worker’s solder position) at 6”. Exhaust ventilation airflow meets recommended capture velocity per ACGIH Ventilation Manual, 25th Ed., (Figure VS-90-01).

Activity: FRCE Supv./Phone: Kathy Ducharme /7946 Log #: n/a

SECTION III – HOOD SYSTEM EVALUATION (Backdraft Hood)

Contaminant controlled: solder and flux vapor

137-322

DIMENSIONS

(FT)

FACE AREA

(L/W)

(SQ FT)

CAPTURE

VELOCITY

AVG (FPM)

RECOMMENDED

CAPTURE

VELOCITY*

(FPM)

AIR

CURRENT

FLOW

Left Ring

(With the use of the enclosing cover)

1.083x1.22 1.32 Not working 50-100

Right Ring

(Without enclosing cover

1.083x1.22 1.32 Not working 50-100

SECTION IV - COMMENTS: *Recommended capture velocity, per ACGIH Ventilation Manual, 25th Ed., (pg. 3-

6/Table 3-1) when contaminant released at low velocity into moderately still air. Parts fit into the heated rings

(induction heaters) that are used to remove lead solder around the exterior of the indicator.

RINGS

(HEATED)

Organization: FRC East – Avionics/Mech/Elec/Ord/Inst. Branch

941/5/6/8

Building Number: 129

Shop (WC)/Code: 94501A, SYS/Avionics & ATE

Supervisor: Jon Wolfe

Phone: 7412 or 7980

Total Personnel, M/F: 8, 6/2, plus one from production control.

GENERAL SHOP OPERATIONS: Shop 94501A performs operational checks and repair of avionic and electrical component equipment. Capabilities include ALQ-157 Infrared Counter Measures System;

AAR-47 Missile Warning System; Electronic Equipment Test Set (EETS) benches for automated testing of Weapons Replaceable Assemblies (WRAs) from AV-8B and F/A-18 aircraft; Hybrid Test Stations

(HTS) for automated testing of Shop Replaceable Assemblies (SRAs) from AV-8B and F/A-18s;

Consolidated Automated Support Systems (CASS) for WRA and SRA testing of AV-8B, F/A-18, and H-

60 components; rework of the Angle Rate Bombing System (ARBS) from the AV-8B using laser guided test stations; bore sighting of the AV-8B weapons system for all AV-8B squadrons; and the avionic upgrades for the AV-8B Remanufacture Program. Some pieces are put into an oven for curing, temperature is below 200 o F.

Personnel may work in a hangar approximately one day every 6 months.

STRESSORS AND ASSOCIATED

OPERATIONS

DURATION/

FREQUENCY

NUMBER OF

Noise producing shop operations -noise greater than 84 dBA, less than

104 dBA. Plastic media blasting machine, use of compressed air in paint booth.

10 to 30 min a day

8 Single hearing protection

(ear plugs or ear muffs)

Acceptable, Varies. Recommend single hearing protection worn by operator and individuals nearby for duration of these tasks. Based on current and historical noise dosimeter data, personnel exposures to noise are not expected to exceed the 8hr

TWA NOEL of 84 dBA.

Repair and Maintenance of AV-8B

Receiver/Processor (RP) Dome

Assemblies, reassembly – skin and inhalation exposure to organic solvent vapors, potting compounds(contains 35-50%

Proprietary Resin, 20-35% Silica, 1-

5% Phenyl glycidyl ether) cleaning, mixing, and applying potting compound.

30 min per unit 7 Nitrile gloves, safety glasses w/ss

Acceptable. No significant exposure due to small amounts and short time.

Repair and Maintenance of AV-8B

Receiver/Processor (RP) Dome

Assemblies, disassembly – skin and inhalation exposure to nuisance dusts. Use of glove box blasting machine and rotary wire brush to remove potting compound

I hr. 10 minutes per unit

7 Enclosed process, nitrile gloves, safety glasses w/ss.

Acceptable due to controls that minimize exposure potential.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Circuit card testing – artisan plugs board into tester and runs appropriate program. No hazards identified.

8 hrs daily 8 None required. Acceptable.

Remove conformal coating from circuit cards – use of 2 plastic media blasting booth. Noise and

Inhalation exposure to plastic media and coating.

1 hr per week 8 Enclosed process.

Single hearing protection

Acceptable. Mild hazard, completely enclosed. Noise duration and level is at or below NOEL of 84 dBA.

Equipment assembly – skin and inhalation exposure to RTV silicone sealant, dow corning conformal coating.

1 to 10 ml per use, to 2 times a day, 3 min each

8 Nitrile gloves, safety glasses w/ss.

Acceptable. Materials are mild irritants used in very small amounts for a short period of time.

Pencil soldering - inhalation and ingestion of lead.1 to 5gm. Each

Used per occasion.

5 to 10 min a day per individual, up to

3 hours a week

8 Safety glasses, Local exhaust hoods, training, housekeeping, hand washing facilities SOP

Acceptable based on sampling similar operations. Materials used in small amounts, short duration of use. Posted lead hazardous area

Pencil soldering, desoldering -inhalation and ingestion of solder flux and combustion products, zinc chloride, (flux remover) 1 to 5gm.

Each Used per occasion. 60/40 and

95/5 tin-lead (repro) solder and

50/50 (“high-temp” soldering), 5 min. to 1 hr. a day per individual, up to

5 hours a week, shop total

8 Safety glasses w/side shields, Local exhaust hoods, training, housekeeping, SOP

Acceptable. Materials are mild irritants, small duration of use.

Pencil soldering, desoldering – musculoskeletal stress. Work is delicate and tedious, requires microscope.

Up to 4 hours a week per person

8 Microscope, local exhaust

Acceptable. Workers can take breaks, work is infrequent.

Electronics component cleaning – skin and inhalation exposure to DS

108 solvent, (Propylene glycol n-propyl ether, Petroleum distillate, Ethyl lactate), isopropyl alcohol, duraclean (10-30% Sodium Xylene

Sulfonate, 1-10% polyethoxylated alcohol, 1-10%, Potassium Silicate, <

1% Potassium Hydroxide)

1 card/2 days 8 Nitrile gloves, chemical goggles, splash shield

Acceptable, based upon mild hazard, short duration.

Plastic Media Glove box blasting operations - Inhalation and ingestion of aluminum, lead & cadmium (repro), chromium metal, hexavalent chromium (carcinogen).

Up to 1 hr. per day

8 Contained operation

Acceptable based upon sampling results for this operation.

Aerosol can spray painting with chromate primer – inhalation exposure to Lead Chromate (repro hazard, carcinogen) So sure 20oz.

spray can, 4 per month. Personnel have received training on Chromate hazards

5 to 15 min. per day

8 Paint spray booth, single hearing protection

Acceptable based upon personal sampling for this operation.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Aerosol can spray painting with lacquer and enamel paints, humiseal –Eye, skin and inhalation exposure to organic solvent vapor

(naphtha, toluene (repro), acetone, propane, MEK, MIK, xylene

(repro), n-butyl alcohol, n-butyl acetate.)

5 to 20 min. up to 4 times a day.

8 Paint spray booth, single hearing protection

Acceptable based upon personal sampling for this operation.

Angle rate bombing systems – non-ionizing radiation and musculoskeletal stress. 39 lb. unit mounted and tested in test stand.

7 hours 2 to 3 times a week

8 SOP, machine filters and partitions, engineering design of test stand

Acceptable based upon shielding and interlocks that prevent exposure, and newer test stands that prevent significant musculoskeletal stress when handling units.

Testing and Repair of ALQ157

System – eye exposure to non-ionizing radiation from class I laser.

1 hr./ week 3 SOP, machine filters and partitions, laser goggles, system interlock.

Acceptable, based upon shielding and interlocks that prevent exposure.

(No workload, none scheduled)

Slip ring deicer, sealing connectors with epoxy – skin and inhalation exposure to 3M TPA-

150 2 part epoxy resin.

Less than 5 min.

up to 20 times per quarter

2 Nitrile gloves Acceptable. Short duration exposure to mild irritant. 2 part kit, 2 oz.

Circuit board, dissolve coating – skin and inhalation exposure to dynasolve 108 (methanol). This is a change from dynasolve 190..

12 times a month, board is left to sit in solution

8 Local exhaust ventilation, nitrile gloves.

New process not fully implemented yet. Solution is covered, no significant exposure concerns are anticipated. Re-evaluate later.

Circuit board, dissolve coating, changing out solution – transfer 1 gallon spent material to hazmat container. skin and inhalation exposure to dynasolve 108

(methanol).

5 minutes per quarter

2 Face shield, goggles, gloves, apron

Acceptable due to material being a mild inhalation exposure hazard, short duration.

Recommendation:

Recommended Medical Surveillance Programs – #506 - Radiation-Laser (Class III+IV)

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: FRC East Supv./Phone: Jon Wolfe /7412 Log #: 16v-195

SECTION I Hood/System Location: SYS/Avionics Shop Shop: 94501 Bldg: 129 2 nd deck

SECTION III - HOOD/SYSTEM EVALUATION: Contaminant(s) Controlled: CHROMATES, ORGANIC

SOLVENT, TOLUENE

SYSTEM DIAGRAM (Paint Booth with rod to hang parts)

(FT)

FACE AREA

(SQ FT)

CAPTURE

VELOCITY

(FPM) (Avg)

RECOMMENDED

FACE VELOCITY

*(FPM)

AIR CURRENT

FLOW

(Smoke Tube)

188-D61

S/N 0970

4 x 4 16 252 *100-200 n/a

SECTION IV - COMMENTS: Measurements were taken at the face of the booth. System meets recommended capture velocity, per *ACGIH VENTILATION MANUAL, 25th ED., Pg. 10-120, VS-75-02, Small Paint Booth.

Organization: FRC East – Avionics/Mech/Elec/Ord/Inst. Branch

941/5/6/8

Building Number: 4224

Shop (WC)/Code: 94501B, SYS/Communication Navigation &

Identification (CNI)

Supervisor: Jon Wolfe

Phone: 7412, 7980

Total Personnel, M/F: 6, 5/1

GENERAL SHOP OPERATIONS: Test and repair capabilities for various aircraft electronic components including electronic sequencing units for helicopter auxiliary power units; engine temperature and power monitor amplifiers; receiver-transmitters; altitude indicators; Automatic Carrier

Landing Systems (ACLS); IFF transponders; TACANs; Automated Direction Finding (ADF) systems;

propeller pitch synchro-phasers; and stick positioning systems. Currently capabilities are maintained such as emergency beacons and radios, and center of gravity hook load indicators although neither is in use.

The shop has a paint booth, parts washer, plastic media glove box blasting cabinet, and 2 soldering fume extractor ventilation units.

STRESSORS AND ASSOCIATED

OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Equipment Testing, Alignment, and

Repair- noise greater than 84 dBA, less than 104 dBA. Plastic media blasting machine, use of compressed air in paint booth.

10 to 30 min a day, occasionally to 6 hours per individual

6 Single hearing protection (ear plugs or ear muffs)

Acceptable, Varies.

Recommend single hearing protection worn by operator and individuals nearby for duration of these tasks.

Based on current and historical noise dosimeter data, personnel exposures to noise are not expected to exceed the 8hr TWA

NOEL of 84 dBA.

Pencil soldering - inhalation and ingestion of lead (repro).1 to 5gm.

Each Used per occasion.

5 to 10 min a day per individual

6 Safety glasses, Local exhaust hoods, training, housekeeping, hand washing facilities

SOP

Acceptable based on sampling similar operations. Materials used in small amounts, short duration of use.

Posted lead hazardous area

Pencil soldering, desoldering -inhalation and ingestion of solder flux and combustion products, zinc chloride, (flux remover) 1 to 5gm.

Each Used per occasion. 60/40 and

95/5 tin-lead (repro) solder and 50/50

(“high-temp” soldering), 5 to 10 min a day per individual

6 Safety glasses w/side shields, Local exhaust hoods, training, housekeeping, SOP

Acceptable. Materials are mild irritants, small duration of use.

ASSOCIATED OPERATIONS

DURATION/

FREQUENCY

NUMBER

OF

Purging, Filling, Fog-Testing and Leak Testing of

Hermetically Sealed

Instruments – inhalation exposure to 9/1 nitrogen/helium gas. Use of 8802 sealant

(epichlorohydrin (carcinogen, repro) and phenol (repro))

Two hours weekly or less

2 SOP, safety glasses w/ss, heat resistant gloves, natural ventilation, local exhaust ventilation for application of

8802 sealant

Acceptable. Hazards are mild, limited quantity and duration.

Plastic Media Glove box blasting operations -…