Highlighted_AFI_91-203_Air_Compressors.pdf

AFI91-203_AFGM2015-04

17 September 2015

MEMORANDUM FOR DISTRIBUTION __

MAJCOMs/FOAs/DRUs

FROM: AF/SE

SUBJECT: Air Force Guidance Memorandum to AFI 91-203, Air Force Consolidated Occupational Safety Instruction

By Order of the Secretary of the Air Force, this AF Guidance Memorandum is reissued to immediately change AFI 91-203. This AFGM supersedes AFI 91-203_AFGM3 that was issued on 19 August 2014. Compliance with this Memorandum is mandatory. To the extent its directions are inconsistent with other Air Force publications; the information herein prevails, in accordance with AFI 33-360, Publications and Forms Management.

In advance of a rewrite of AFI 91-203, the Attachment to this Memorandum is updated to provide guidance changes that are effective immediately. An asterisk (*) indicates newly revised material.

The Memorandum becomes void after one-year has elapsed from the date of this Memorandum, or upon incorporation of an Interim Change or rewrite of AFI 91-203, whichever is earlier.

ANDREW M. MUELLER, Maj Gen, USAF Chief of Safety

Attachment:

Guidance Changes

DEPARTMENT OF THE AIR FORCE

HEADQUARTERS UNITED STATES AIR FORCE

WASHINGTON, DC

412 AFI91-203 15 JUNE 2012

24.14.16. Conduct aircraft refueling and defueling operations in facilities designated and approved for aircraft fuel system maintenance (fuel cell repair) operations. Refer to TO 1-1- 3, Inspection and Repair of Aircraft Integral Tank and Fuel Cells, for aircraft fuel system maintenance facility requirements. For operations other than aircraft fuel systems maintenance, aircraft shall only be fueled or defueled in facilities approved through a System Safety Engineering Analysis (SSEA) conducted IAW instructions in TO 00-25-172, Ground Servicing of Aircraft and Static Grounding/Bonding. SSEA-approved facilities include TAB VEE shelters, modified TAB VEE, 2nd and 3rd generation aircraft shelters, flow-through revetments and B-2 maintenance facilities at Whiteman AFB, MO.

24.15. Aircraft Shop and Flight Line Maintenance Operations.

24.15.1. General Requirements. Plan layout of aircraft shops and the flight line operations and facilities in relation to lighting, ventilation, aisle way and work space for safe and efficient production. Provide mechanical safeguards to prevent injury from equipment failure or unsafe use. Locate hazardous operations in isolated areas less likely to endanger workers.

Shop supervisors shall brief aircraft shop and the flight line workers on hazards of poor housekeeping, personal safety, occupational health, shop machinery, loose clothes and finger rings.

24.15.1.1. Machine Safeguarding and Shop Layout. Machinery shall be procured with built-in safeguards for operator protection without interfering with normal equipment operation. Suitable enclosures or barricades shall be installed on unguarded machinery or power-transmission equipment. Firmly secure machines and equipment to floors, bases or stands located so the operator need not stand in an aisle. Provide the operator sufficient space to handle materials and conduct routine job and maintenance tasks, including cleaning and housekeeping, without interfering with other operations. Refer to Chapter 18, Machinery, and Chapter 7, Walking Surfaces, for additional information.

24.15.1.2. Tool Safety. Unsafe use of hand and power tools can injure workers or damage equipment. Supervisors shall enforce strict tool control procedures. Use of personally owned hand and power tools shall be prohibited. Tools shall be kept in suitable containers when not in use. Appropriate PPE, such as goggles, face shields, hard hats, gloves, respirators and safety-toe shoes, shall be provided to workers and use enforced. Refer to TO 32-1-101, Use and Care of Hand Tools and Measuring Tools, and TO 32-1-2, Use of Hand Tools (International Business Machines), and paragraph 24.15.8 for battery-powered tool use.

24.15.1.3. Compressed Air Systems. Workers shall wear appropriate PPE, such as gloves and wrap-around face shields or goggles, when using compressed air for cleaning. All shop and aircraft maintenance personnel authorized to use air compressors shall be trained in operation and maintenance of air compressors. Compressed air for general cleaning purposes shall be limited to less than 30 psi. Effective chip guarding shall be provided and have a finger-actuated press (on)/release (off) control. Compressed air shall not be used for cleaning benches, floors, work areas, aircraft interiors, clothing or exposed body surfaces. Aircraft pitot-static systems shall not be cleaned with compressed air to prevent instrument diaphragm damage. Refer to paragraph 24.2.5 for additional information on cleaning with compressed air.

24.15.1.1. Machine Safeguarding and Shop Layout. Machinery shall be procured with g g p y y p built-in safeguards for operator protection without interfering with normal equipment g p p g q p operation. Suitable enclosures or barricades shall be installed on unguarded machinery orp g y power-transmission equipment. Firmly secure machines and equipment to floors, bases or p q p y q p , stands located so the operator need not stand in an aisle. Provide the operator sufficient p p space to handle materials and conduct routine job and maintenance tasks, including p j , g cleaning and housekeeping, without interfering with other operations. Refer to Chapterg p g, g p 18, Machinery, and Chapter 7, Walking Surfaces, for additional information.

AFI91-203 15 JUNE 2012 631

32.10.2.4. Ventilation. Mechanical ventilation shall be provided in all paint spray booths to prevent accumulation of flammable and injurious vapors. Refer to ACGIH’s Industrial Ventilation: A Manual of Recommended Practice for Operations and Maintenance, and 29 CFR 1910.107, Spray Finishing Using Flammable and Combustible Materials, for additional guidance.

32.10.2.5. Interlocks. Electrical equipment for electrostatic hand spraying shall be interlocked with spray booth ventilation controls so spraying cannot be done unless the ventilation fans are operating. Refer to 29 CFR 1910.107 for additional guidance.

32.11. Air Compressors.

32.11.1. General Requirements.

32.11.1.1. Only qualified personnel shall repair or adjust pressure-regulating equipment.

32.11.1.2. All personnel operating air compressors shall be familiar with air compressor operating instructions.

32.11.2. Specific Requirements.

32.11.2.1. All new air tanks and safety valves shall be constructed, installed and maintained IAW American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section VIII. The ASME code seal is permanently stamped on tanks meeting this criteria.

32.11.2.2. Air receivers shall be installed so all drains are easily accessible. Air receivers shall be installed with sufficient clearance to permit a complete external inspection and to avoid corrosion of external surfaces.

32.11.2.3. A drain pipe and valve shall be installed at the lowest point of the air receiver to remove accumulated oil and water. The drain valve shall be opened and the receiver completely drained daily to prevent accumulation of excessive amounts of liquid in the receiver. Air receivers shall be stenciled to reflect this requirement (exclude air receivers with automatic drains).

32.11.2.4. Every air receiver shall be equipped with a readily visible pressure indicating gauge and with one or more spring-loaded safety valves. The total relieving capacity of such valves shall prevent receiver pressure exceeding the maximum allowable working pressure by more than 10 percent.

32.11.2.5. No valve of any type shall be placed between the air receiver and its safety valve or valves.

32.11.2.6. All safety valves shall be tested at regular intervals by installation CE or designated representative to ensure the valves are operational, and will repair and replace the safety valves, if faulty/non-operational.

32.11.2.7. Installed compressed air line outlets shall have the delivered air pressure tagged or marked showing maximum working pressure.

32.11.2.8. Air hoses shall not be placed where they may create tripping hazards. All hoses shall be inspected to ensure they are properly connected to pipe outlets before use.

32.11. Air Compressors.

32.11.1. General Requirements.

32.11.1.1. Only qualified personnel shall repair or adjust pressure-regulating equipment.

32.11.1.2. All personnel operating air compressors shall be familiar with air compressorp operating instructions.

32.11.2. Specific Requirements.

32.11.2.1. All new air tanks and safety valves shall be constructed, installed and y , maintained IAW American Society of Mechanical Engineers (ASME) Boiler and y g ( ) Pressure Vessel Code, Section VIII. The ASME code seal is permanently stamped on tanks meeting this criteria.

32.11.2.2. Air receivers shall be installed so all drains are easily accessible. Air receivers y shall be installed with sufficient clearance to permit a complete external inspection and to avoid corrosion of external surfaces.

32.11.2.3. A drain pipe and valve shall be installed at the lowest point of the air receiver p p p to remove accumulated oil and water. The drain valve shall be opened and the receiver p completely drained daily to prevent accumulation of excessive amounts of liquid in thep y y p q receiver. Air receivers shall be stenciled to reflect this requirement (exclude air receivers with automatic drains).

32.11.2.4. Every air receiver shall be equipped with a readily visible pressure indicatingy q pp y p g gauge and with one or more spring-loaded safety valves. The total relieving capacity of g g p g y g p y such valves shall prevent receiver pressure exceeding the maximum allowable working p pressure by more than 10 percent.

32.11.2.5. No valve of any type shall be placed between the air receiver and its safety valve or valves.

32.11.2.6. All safety valves shall be tested at regular intervals by installation CE or y g y designated representative to ensure the valves are operational, and will repair and replace g p the safety valves, if faulty/non-operational.

32.11.2.7. Installed compressed air line outlets shall have the delivered air pressurep tagged or marked showing maximum working pressure.

32.11.2.8. Air hoses shall not be placed where they may create tripping hazards. All p y y pp g hoses shall be inspected to ensure they are properly connected to pipe outlets before use.