Table Of ContentBY ORDER OF THE SECRETARY   AIR FORCE MANUAL 91-201 
OF THE AIR FORCE 
21 MARCH 2017 
AIR FORCE SPACE COMMAND 
Supplement 
13 SEPTEMBER 2017 
Safety 
 
EXPLOSIVES SAFETY STANDARDS 
COMPLIANCE WITH THIS PUBLICATION IS MANDATORY 
 
ACCESSIBILITY:   Publications and forms are available on the e-Publishing website at 
www.e-Publishing.af.mil for downloading or ordering. 
RELEASABILITY:  There are no releasability restrictions on this publication. 
 
 
OPR:  AFSEC/SEW  Certified by: AFSEC/CD  
  (Mr. James Rubeor) 
Supersedes:  AFMAN 91-201,   Pages: 488 
                        12 January 2011   
OPR:  AFSPC/SEW  Certified by: AFSPC/SEW  
  (Mr. Martin Reynolds) 
Supersedes: AFMAN91-201_AFSPCSUP,   Pages: 488 
                    28 May 2012   
 
This Manual implements Air Force Policy Directive (AFPD) 91-2, Safety Programs, and DoD 
6055.09-M, Volumes 1–8, DoD Ammunition and Explosives Safety Standards.  It establishes a 
central source for explosive safety criteria.  It identifies hazards and states safety precautions and 
rules when working with explosives.  It applies to all Air Force, Air National Guard (ANG), Air 
Force Reserve Command (AFRC), and contractor personnel and facilities involved in explosive 
operations.  The use of the name or mark of any specific manufacturer, commercial product, 
commodity, or service in this publication does not imply endorsement by the Air Force.  This 
AFI  may  be  supplemented  at  any  level,  but  all  supplements  that  directly  implement  this 
publication must be routed to SAF/AAII Policy Branch for coordination prior to certification and 
approval. Refer recommended changes and questions about this publication to the Office of 
Primary  Responsibility  (OPR)  using  the  AF  Form  847,  Recommendation  for  Change  of 
Publication; route AF Forms 847 from the field through the appropriate functional chain of 
command.    The  authorities  to  waive  wing/unit  level  requirements  in  this  publication  are 
identified with a Tier (“T-0, T-1, T-2, T-3”) number following the compliance statement.  See 
AFI 33-360, Publications and Forms Management, Table 1.1 for a description of the authorities
2  AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017 
associated with  the Tier numbers.  Send MAJCOM supplements to  AFSEC/SEW, 9700 G 
Avenue SE, Kirtland AFB NM 87117-5670.  Ensure that all records created as a result of 
processes prescribed in this publication are maintained in accordance with (IAW) Air Force 
Manual  (AFMAN)  33-363,  Management  of  Records,  and  disposed  of  IAW  the  Air  Force 
Records Disposition Schedule (RDS) in the Air Force Records Information Management System 
(AFRIMS). 
(AFSPC)  This  supplement  implements  and  extends  the  guidance  of  Air  Force  Manual 
(AFMAN)  91-201,  Explosives  Safety  Standards.    This  supplement  describes  AFSPC’s 
procedures for use in conjunction with AFMAN 91-201.  It applies to all Air Force Space 
Command (AFSPC) and subordinate units.  This supplement applies to those Air National Guard 
and Air Force Reserve units participating in AFSPC classic association with the active Air Force.  
Refer recommended changes and questions about  this publication to the Office of Primary 
Responsibility (OPR) using the AF Form 847, Recommendation for Change of Publication; route 
AF Forms 847 from the field through the appropriate functional’s chain of command.  Ensure 
that all records created as a result of processes prescribed in this publication are maintained in 
accordance with AFMAN 33-363, Management of Records, and disposed of in accordance with 
Air Force Records Information Management System (AFRIMS) Records Disposition Schedule 
(RDS).  The authorities to waiver wing/unit level requirements in this publication are identified 
with a Tier (“T-0, T-1, T-2, T-3”) number following the compliance statement.  See AFI 33-360, 
Publications and Forms Management, Table 1.1 for a description of the authorities associated 
with the Tier numbers.  Submit requests for waivers through the chain of command to the 
appropriate Tier waiver approval authority, or alternately, to the Publication OPR for non-tiered 
compliance items.  This publication may be supplemented at any level, but all Supplements must 
be routed for coordination prior to certification and approval.  The use of the name or mark of 
any specific manufacturer, commercial product, commodity, or service in this publication does 
not imply endorsement by the Air Force.  See Attachment 1 for a glossary of references and 
supporting information. 
SUMMARY OF CHANGES 
This revision reflects changes in guidance and procedures dealing with Air Force explosives 
safety standards.  Major changes include incorporation of GM1; expansion of blast effects on 
personnel;  updates  weather  watch/warning  procedures;  expansion  of  protective  design 
construction  requirements;  and  the  deletion  of  Chapter  9,  Protection  of  Electro-Explosive 
Devices From Hazards of Electromagnetic Radiation to Ordnance (HERO) and its replacement 
with  a  chapter  on  Munitions  Potentially  Presenting  and  Explosive  Hazard.    The  HERO 
information  previously  presented  in  Chapter  9  is  available  in  AFI  91-208,  Hazards  of 
Electromagnetic  Radiation  to  Ordnance  (HERO)  Certification  and  Management.    It  also 
includes guidance for overpressure barricade design;  clarification of chocking requirements for 
explosives-loaded  vehicles  (e.g.,  munitions  materials  handling  equipment  (MMHE)  and 
materials handling equipment (MHE));  updates to electromagnetic radiation (EMR) formulas for 
pulsed  systems;    clarifies  withdrawal  procedures  for  ammunition  and  explosives  (AE)  not 
involved  in  a  fire;    updates  compatibility  requirements  for  licensed  location;  adopts  new 
rounding rules used for quantity distance (QD) calculations;  updates QD criterion for various 
facility types and situations;  and, corrects and updates notes used in QD tables.  Furthermore, it
AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017  3 
removes  written  Commander  acceptance  requirements  for  parking  aircraft  at  less  than 
survivability;  reduces coordination host/tenant requirements for explosives site plans (ESP) 
(may also be referred to as a QD safety submission (QDSS)) without exceptions;  removes 
references and procedures for Risk Based Siting;  includes additional chapters for Real Property, 
Waste  Military  Munitions,  Material  Potentially  Presenting  an  Explosive  Hazard  (MPPEH); 
Unexploded Ordnance (UXO); includes review elements for both munitions response explosives 
safety submissions (MRESS) and munitions response explosives site plan (MRESP) packages;  
and  incorporates  use  of  a  revised  Automated  Explosives Safety  Siting  Program  for  use  in 
developing  ESPs.    Additionally,  this  Manual  introduces  new  phraseology  for  an  MRESS, 
formerly  an  explosives  safety  submission  (ESS);    a  munitions  response  chemical  safety 
submission (MRCSS), formerly a chemical safety submission (CSS);  and an MRESP, formerly 
an explosives site plan (ESP) when referring to munitions response activities under the Military 
Munitions Response Program (MMRP). 
(AFSPC)  Recent changes include the addition of paragraph 7.5.4.1. and paragraph 7.5.4.1.1. 
providing guidance on general public safety. Paragraph 7.13.3 provides guidance on aircraft 
grounding, and paragraph 12.97.4.3 provides guidance on spacecraft explosives siting. 
 
Chapter 1— INTRODUCTION AND EXCEPTION PROGRAM    29 
Section 1A— Explosives Safety General Instructions    29 
1.1.   Purpose....................................................................................................................   29 
1.1.  (AFSPC) Explosives safety is survivability of ........................................................   29 
1.2.   Scope. ......................................................................................................................   29 
Section 1B— Exception Program    32 
1.3.   General. ...................................................................................................................   32 
1.4.   Deviations. ..............................................................................................................   33 
1.5.   Event Waivers (Nonrecurring). ...............................................................................   34 
1.6.   Waivers. ..................................................................................................................   35 
1.7.   Exemptions. ............................................................................................................   35 
1.8.   SECAF New Construction Exemption. ..................................................................   36 
1.9.   Exceptions for Non-DoD Explosives Activities on Air Force Installations. ..........   36 
1.10.   Waiver and Exemption Information Requirements. ...............................................   37 
1.11.   HAF-Level Waiver and Exemption Information Requirements. ............................   37 
1.12.   Waiver and Exemption Decision Nomograph. .......................................................   39 
1.13.   Periodic Reviews for Exceptions. ...........................................................................   40
4  AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017 
Figure  1.1.   Waiver and Exemption Decision Nomograph-Peacetime/Armistice Operations. ..   41 
Figure  1.2.   Waiver and Exemption Decision Nomograph-Wartime/Contingency Operations.   42 
Table  1.1.   Likelihood of a Mishap. ..........................................................................................   43 
Table  1.2.   Exposure. ................................................................................................................   44 
Table  1.3.   Explosive Mishap Severity. ....................................................................................   45 
Chapter 2— REACTION EFFECTS    48 
Section 2A— Principal Effects of Hazard Division (HD) 1.1 Events    48 
2.1.   Blast. .......................................................................................................................   48 
2.2.   Fragments................................................................................................................   50 
2.3.   Thermal Hazards. ....................................................................................................   50 
2.4.   Groundshock and Cratering. ...................................................................................   50 
2.5.   Expected Consequences. .........................................................................................   50 
Section 2B— Principal Effects of HD 1.2 Events    53 
2.6.   Blast. .......................................................................................................................   53 
2.7.   Fragments................................................................................................................   54 
2.8.   Thermal Hazards. ....................................................................................................   54 
2.9.   Expected Consequences. .........................................................................................   54 
Section 2C— Principal Effects of HD 1.3 Events    55 
2.10.   Gas Pressures. .........................................................................................................   55 
2.11.   Fragments................................................................................................................   55 
2.12.   Thermal Hazards. ....................................................................................................   55 
2.13.   Expected Consequences. .........................................................................................   56 
Section 2D— Principal Effects of HD 1.4 Events    56 
2.14.   Blast. .......................................................................................................................   56 
2.15.   Fragments................................................................................................................   56 
2.16.   Thermal Hazards. ....................................................................................................   56 
2.17.   Expected Consequences. .........................................................................................   56 
Section 2E— Principal Effects of HD 1.5 and HD 1.6 Events    56 
2.18.   HD 1.5 Effects. .......................................................................................................   56
AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017  5 
2.19.   HD 1.6 Effects. .......................................................................................................   56 
Table  2.1.   Expected Peak Incident Pressures From HD 1.1 Events. .......................................   57 
Table  2.2.   Probability of Window Breakage from Incident Pressure. .....................................   57 
Table  2.3.   General Blast Effects on Personnel Eardrum Rupture. ...........................................   58 
Table  2.4.   General Blast Effects on Personnel – Lung Damage. .............................................   59 
Table  2.5.   General Blast Effects on Personnel – Lethality Due To Lung Rupture. .................   59 
Chapter 3— HAZARD CLASSIFICATION    60 
3.1.   Purpose of Hazard Classification. ...........................................................................   60 
Section 3A— DoD Hazard Classification System    60 
3.2.   Responsibility for Hazard Classification. ...............................................................   60 
3.3.   Hazard Classification Authorities ...........................................................................   60 
3.4.   Standards for Determining DoD Hazard Classification. .........................................   60 
3.5.   Description of DoD Hazard Classification System.................................................   60 
3.6.   Net Explosive Weight (NEW) and NEW for Quantity-Distance (NEWQD). ........   61 
3.7.   Requirement for DoD Hazard Classification. .........................................................   62 
Section 3B— Storage and Transportation Without DoD Hazard Classification    62 
3.8.   Storage and Transportation Without DoD Hazard Classification. ..........................   62 
3.9.   Explosives With DOE Hazard Classifications. .......................................................   62 
3.10.   DoD-Owned Non-Stock-Listed Commercial Explosives. ......................................   63 
3.11.   Manufacturing, R&D Items. ...................................................................................   64 
3.12.   Foreign Explosives. ................................................................................................   65 
3.13.   Non-DoD-Owned Explosives. ................................................................................   66 
Section 3C— Hazard Classification of Unpackaged Items    67 
3.14.   Hazard Classification of Unpackaged Items. ..........................................................   67 
Section 3D— Class 1 Divisions and Subdivisions    68 
3.15.   HD 1.1 – Mass-Explosion. ......................................................................................   68 
3.16.   HD 1.2 – Non-Mass Explosion, Fragment Producing. ...........................................   69 
3.17.   HD 1.3 – Mass Fire, Minor Blast or Fragment. ......................................................   70 
3.18.   HD 1.4 – Moderate Fire, No Significant Blast or Fragment. ..................................   70
6  AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017 
3.19.   HD 1.5 – Explosive Substance, Very Insensitive (With Mass Explosion Hazard).   70 
3.20.   HD 1.6 – Explosive Article, Extremely Insensitive (No Mass Explosion Hazard).   70 
Section 3E— Compatibility Groups and Sensitivity Groups    70 
3.21.   Storage and Transportation Compatibility Groups. ................................................   70 
3.22.   Sensitivity Groups. ..................................................................................................   71 
Chapter 4— RISK ASSESSMENTS AND PROTECTION PRINCIPLES    73 
Section 4A— Risk Assessments    73 
4.1.   Requirements for Risk Assessments. ......................................................................   73 
4.2.   Risk Assessments. ...................................................................................................   73 
4.3.   Risk Management (RM). ........................................................................................   74 
4.4.   System Safety. ........................................................................................................   74 
4.5.   Professional Assistance for Risk Assessments and System Safety Analyses. ........   74 
Section 4B— Munitions Systems and Equipment    74 
4.6.   Safety Certification of Munitions Systems. ............................................................   74 
4.7.   Risk Assessments for Explosives Equipment. ........................................................   74 
Section 4C— Explosives Operations and Facilities    75 
4.8.   Risk Assessment for Explosives Operations. ..........................................................   75 
4.9.   Risk Assessments for Explosives Facilities. ...........................................................   75 
Section 4D— Glass Breakage Risk Assessments    75 
4.10.   Purpose of Glass Breakage Risk Assessments. .......................................................   75 
4.11.   Requirements for Performance of Glass Breakage Risk Assessments. ..................   75 
4.12.   Methodology for Glass Breakage Risk Assessments. .............................................   76 
4.13.   Engineering Mitigation Actions for Reducing or Eliminating Glass Breakage 
Hazards to Personnel. ..............................................................................................   77 
Section 4E— Health Hazard and Environmental Assessments    77 
4.14.   Health Hazard Assessments. ...................................................................................   77 
4.15.   Environmental Assessments. ..................................................................................   77 
Section 4F— Protection Principles    77 
4.16.   Protective Shielding and Remotely Controlled Operations. ...................................   77
AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017  7 
4.17.   Intentional Ignition or Initiation of AE. ..................................................................   78 
4.18.   Protective Measures. ...............................................................................................   79 
4.19.   Emergency Operations. ...........................................................................................   79 
Figure  4.1.   5-Step Risk Management Process. ..........................................................................   81 
Chapter 5— GENERAL EXPLOSIVES FACILITY DESIGN, CONSTRUCTION AND 
MAINTENANCE, AND EQUIPMENT DESIGN, MAINTENANCE AND 
INSPECTION    82 
Section 5A— Introduction    82 
5.1.   Applicability. ..........................................................................................................   82 
Section 5B— Glass Panels    82 
5.2.   Glass Panels in Facilities Exposed to Explosives Hazards. ....................................   82 
Section 5C— Hazardous Locations    83 
5.3.   Hazardous Locations. ..............................................................................................   83 
5.4.   Electrical Equipment in Hazardous Locations. .......................................................   83 
5.5.   Interior Surfaces in Class II Hazardous Locations..................................................   84 
5.6.   Hardware in Hazardous Locations. .........................................................................   84 
5.7.   Static Electricity in Hazardous Locations. ..............................................................   84 
5.8.   Ventilation in Hazardous Locations. .......................................................................   84 
Section 5D— Electric Supply Systems    85 
5.9.   Electric Supply Systems. ........................................................................................   85 
5.10.   Backup Power. ........................................................................................................   85 
Section 5E— Static Grounding and Bonding    85 
5.11.   Areas Requiring Static Grounding and Bonding Systems. .....................................   85 
5.12.   Static Grounding and Bonding Requirements. .......................................................   85 
5.13.   Permanent Static Grounding Systems. ....................................................................   86 
5.14.   Temporary Static Grounding or Bonding Cables. ..................................................   87 
5.15.   Static Grounding or Bonding Reels. .......................................................................   87 
5.16.   Belting. ....................................................................................................................   88
8  AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017 
Section 5F— Conductive Floors    88 
5.17.   Areas Requiring Conductive Floors. .......................................................................   88 
5.18.   Requirements for Conductive Floors. .....................................................................   88 
5.19.   Testing and Maintenance of Conductive Floors. ....................................................   88 
5.20.   Testing and Maintenance of Conductive Footwear. ...............................................   88 
Section G— Installed Systems and Equipment Grounds    89 
5.21.   Installed Systems and Equipment Grounds. ...........................................................   89 
Section 5H— Lightning Protection Systems    89 
5.22.   Facilities Requiring LPS. ........................................................................................   89 
5.23.   LPS Design. ............................................................................................................   90 
5.24.   LPS Inspection, Maintenance, Testing, and Training. ............................................   93 
5.25.   LPS Exceptions. ......................................................................................................   94 
Section 5I— General Design Considerations for Explosives Facilities    95 
5.26.   Blowout-type Construction. ....................................................................................   95 
5.27.   Non-combustible Construction. ..............................................................................   95 
5.28.   Underground Explosives Storage Facilities. ...........................................................   95 
5.29.   Outdoor Explosives Storage Sites. ..........................................................................   95 
5.30.   Stairways. ................................................................................................................   96 
5.31.   Fixed Ladders. ........................................................................................................   96 
5.32.   Platforms, Runways, and Railings. .........................................................................   96 
5.33.   Passageways. ...........................................................................................................   96 
5.34.   Walkways................................................................................................................   96 
5.35.   Roads. .....................................................................................................................   96 
5.36.   Gates. ......................................................................................................................   97 
5.37.   Drainage. .................................................................................................................   97 
5.38.   Drains and Sumps. ..................................................................................................   97 
5.39.   Tunnels....................................................................................................................   98 
5.40.   Laundries. ...............................................................................................................   98 
5.41.   Steam for Explosives Processing or Facility Heating. ............................................   98
AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017  9 
5.42.   Magazine Ventilation and Vermin-Resistance. ......................................................   99 
Section 5J— Emergency Exits for Explosives Buildings    99 
5.43.   General. ...................................................................................................................   99 
5.44.   Building Exits. ........................................................................................................   99 
5.45.   Exit Doors. ..............................................................................................................   100 
5.46.   Safety Chutes. .........................................................................................................   100 
Section 5K— Explosive Dust Collection Systems    101 
5.47.   Vacuum Collection. ................................................................................................   101 
5.48.   Location of Dry-Type Collection Chambers. .........................................................   101 
5.49.   Location of Wet-Type Collection Chambers. .........................................................   102 
5.50.   Design and Operation of Collection Systems. ........................................................   102 
Section 5L— Water Supply and Fire Suppression Systems for Explosives Facilities    103 
5.51.   Water Supply for Explosives Manufacturing Areas and Loading Plants. ..............   103 
5.52.   Automatic Sprinkler Systems. ................................................................................   103 
5.53.   Deluge Systems. ......................................................................................................   103 
Section 5M— Monitoring of Design and Construction of Explosives Facilities    104 
5.54.   Monitoring of Design of Explosives Facilities. ......................................................   104 
5.55.   Monitoring of Construction of Explosives Facilities. .............................................   104 
Section 5N— Maintenance and Repair of Explosives Facilities and Equipment    104 
5.56.   Removal of Explosives. ..........................................................................................   104 
5.57.   Requirements for Maintenance and Repair With Explosives Present. ...................   105 
5.58.   Maintenance of Explosives Facilities. ....................................................................   105 
5.59.   Maintenance and Repair in Hazardous Locations. ..................................................   106 
5.60.   Maintenance and Repair of Hazardous Location Equipment and Electrical 
Installations. .............................................................................................................   106 
5.61.   Maintenance and Repair of Electrical Equipment. .................................................   106 
5.62.   Post-Maintenance and Repair of Explosives Facilities and Equipment. .................   106 
Table  5.1.   Lightning Sideflash Policy for Nuclear Weapon Configurations. ..........................   107
10  AFMAN91-201_AFSPCSUP 13 SEPTEMBER 2017 
Chapter 6— PROTECTIVE CONSTRUCTION AND SPECIFIC EXPLOSIVES 
FACILITY DESIGNS    108 
Section 6A— Introduction    108 
6.1.   General. ...................................................................................................................   108 
6.2.   Aboveground Magazines (AGM). ..........................................................................   108 
6.3.   Special Structures. ..................................................................................................   108 
6.4.   High Performance Magazines and Underground Explosives Facilities. .................   108 
Section 6B— Protective Construction    108 
6.5.   Purpose of Protective Construction. .......................................................................   108 
6.6.   Requirements for Use of Protective Construction. .................................................   109 
Section 6C— Earth-Covered Magazines    111 
6.7.   Earth-Covered Magazines. ......................................................................................   111 
6.8.   Earth-Covered Magazine NEWQD Limits. ............................................................   111 
6.9.   Earth-Covered Magazine Design Load Criteria......................................................   111 
6.10.   Earth-Covered Magazine Earth Cover Criteria. ......................................................   111 
6.11.   Earth-Covered Magazine Drawings. .......................................................................   112 
Section 6D— Barricaded Open Storage Modules    112 
6.12.   Barricaded Open Storage Modules. ........................................................................   112 
6.13.   Barricaded Open Storage Modules NEWQD and AE Type Limits. .......................   112 
6.14.   Barricaded Open Storage Module Design Criteria. ................................................   113 
Section 6E— Barricades    114 
6.15.   Barricades ...............................................................................................................   114 
6.16.   Barricade Size and Orientation to Prevent Propagation Due to High-Velocity, 
Low-Angle Fragments. ............................................................................................   115 
6.17.   Barricade Size and Orientation for Barricaded ILD Protection. .............................   115 
6.18.   Barricade Size and Orientation for Protection Against Overpressure. ...................   116 
6.19.   Barricade Construction Materials. ..........................................................................   116 
6.20.   Barricade Designs. ..................................................................................................   116 
6.21.   Natural Barricades. .................................................................................................   116
Description:Trailers on Flat Cars or Piggyback Explosives Loading and Unloading.  crash. PARKED. AIRCRAFT. - 2.3 psi thru K18, 3.5 psi. -- Aircraft are expected to suffer considerable structural damage from blast.  AIM-120, Weapon Delivery Unit (WDU)-33/Bs and/or AIM-120, WDU-41/Bs. AIM-9s.