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  1. ✓Find scope
  2. 2Governing rule
  3. 3Resolve conflicts
  4. 4Verify equipment

Step 2: Read the governing requirement. On the feature page, start with the Most Restrictive Requirement, then review applicable standards and the lead authority.

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FOW-PRO-027Critical

Propellant Extrusion – Building 100

Propellant Extrusion – Building 100: design, construction and commissioning within a defense energetics production facility.

Most Restrictive Requirement
UFC 3-340-02

UFC 3-340-02 blast criteria governs all structural requirements regardless of less restrictive standards.

Design Criteria

Hazard Division
1.3
UFC 3-340-02 Table 3-1
Max Net Explosive Weight
1000 lb NEW
UFC 3-340-02 Para. 4.2
Inhabited Building Distance
1250 ft
UFC 3-340-02 Table 8-9
Hazardous Area Classification
Class II Div 1 / Zone 21
UFC 3-340-02 Art. 500/505
Required SIL
SIL 2
UFC 3-340-02 IEC 61511 §9
Sprinkler / Deluge Density
0.45 gpm/ft²
UFC 3-340-02 Ch. 11

Illustrative values — confirm against the cited edition before design use.

Summary

Discipline
Process Engineering
Category
Process
Risk Level
Critical
Approval Authority
Army Explosives Safety Office
Standards Applied
20 across 11 families
Verified Links
6 of 20 approved
Common Equipment
Process Piping Skid, Weigh/Batch System, Curing Oven, Twin-Screw Extruder

Applicable Standards (20)

Structural
Explosives Safety
Fire Protection
Hazardous Areas
Process Safety
Functional Safety

Governing Authorities

  • Army Explosives Safety Office
    Explosives Safety Authority · Site plans, QD arcs, explosives safety submissions
    Lead
  • USACE
    Construction Agent / Design Review · Design criteria compliance, DD1391, construction QA
  • OSHA
    Occupational Safety Regulator · Worker safety, PSM program compliance

Highest Risk Items

  • Accidental detonation during mixingCritical
    Remote operation, shielding per UFC 3-340-02, and explosives safety review prior to start-up.
  • Unapproved European Ex equipment installedHigh
    Engineering controls, third-party verification and AHJ acceptance testing.
  • Procurement of non-ASME vesselHigh
    Engineering controls, third-party verification and AHJ acceptance testing.
  • Static ignition of propellant dustHigh
    Engineering controls, third-party verification and AHJ acceptance testing.
  • Incorrect area classificationHigh
    Engineering controls, third-party verification and AHJ acceptance testing.
  • Extruder thermal runawayCritical
    Remote operation, shielding per UFC 3-340-02, and explosives safety review prior to start-up.

Known U.S. / European Conflicts (20)

DESR 6055.09↔UK ER 2014· Explosives separation distancesSignificant Difference
UK uses HSE separation tables by hazard type; apply the more restrictive distance per exposure and document both.
DESR 6055.09↔SprengG· Explosives licensing and storagePartial
German storage groups map loosely to HD; host-nation licensing is required in addition to DDESB site plan.
DESR 6055.09↔2. SprengV· Storage separation distancesPartial
Compare Lagergruppe distances to DESR QD; use larger value.
29 CFR 1910.119↔2012/18/EU· Major hazard / process safetyPartial
Seveso requires public safety report and land-use planning beyond PSM.
UFC 3-340-02↔EN 1991-1-7· Accidental explosion loadsSignificant Difference
Fundamental differences; requires AHJ/NRTL review and likely redesign or re-certification.
NFPA 68↔DIN EN 14491· Dust explosion ventingPartial
Partial alignment; supplemental U.S. testing or documentation required.
NFPA 72↔DIN EN 54· Fire detectionPartial
Partial alignment; supplemental U.S. testing or documentation required.
ASME B31.3↔EN 13480· Process pipingPartial
Partial alignment; supplemental U.S. testing or documentation required.
IEC 61511↔DIN EN ISO 13849-1· Safety control systemsPartial
Partial alignment; supplemental U.S. testing or documentation required.
UFC 3-310-04↔EN 1998· Seismic designPartial
Partial alignment; supplemental U.S. testing or documentation required.
NFPA 496↔IEC 60079-2· Pressurized enclosuresSimilar
Requirements broadly equivalent; document equivalency in design analysis.
UFGS 21 13 18↔2014/34/EU· Cable sizingPartial
Partial alignment; supplemental U.S. testing or documentation required.
NFPA 70↔DIN EN ISO 13849-1· Enclosure ratingsSimilar
Requirements broadly equivalent; document equivalency in design analysis.
UFC 4-422-01↔DIN EN ISO 13849-1· HVAC duct designSimilar
Requirements broadly equivalent; document equivalency in design analysis.
NFPA 68↔2014/34/EU· Smoke controlPartial
Partial alignment; supplemental U.S. testing or documentation required.
NFPA 850↔DIN EN ISO 13849-1· Hydrant spacingSimilar
Requirements broadly equivalent; document equivalency in design analysis.
NFPA 497↔DIN EN ISO 13849-1· Lockout tagoutSimilar
Requirements broadly equivalent; document equivalency in design analysis.
NFPA 496↔2014/34/EU· Surge protectionPartial
Partial alignment; supplemental U.S. testing or documentation required.
ASME BPVC VIII-1↔DIN EN ISO 13849-1· Steel connectionsSimilar
Requirements broadly equivalent; document equivalency in design analysis.
UFC 3-575-01↔DIN EN ISO 13849-1· Alarm managementSimilar
Requirements broadly equivalent; document equivalency in design analysis.

Equipment Impacted (11)

Process Piping SkidWeigh/Batch SystemCuring OvenTwin-Screw ExtruderMixing VesselRupture DiscPressure VesselRemote Operating StationHMI WorkstationPLC CabinetStatic Grounding Monitor