Top DoD irradiation apparatus manufacturing contractors
In the 12 months ending Oct 5, 2026, the Department of Defense obligated $86.4M in net prime contract dollars under NAICS 334517, down 33.5% from $129.9M in the preceding 12 months. 26 prime contractors received positive obligations, and 2 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Defense. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
DoD publishes contract data to USAspending with a 90-day delay, so the most recent months understate DoD activity.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DoD contractors for NAICS 334517
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Siemens Medical Solutions USA, Inc. | $42.6M | $45.2M | 49.3% | — |
| 2 | GE Precision Healthcare LLC | $31.8M | $39.4M | 36.9% | — |
| 3 | Hologic Sales and Service, LLC | $3.0M | $7.0M | 3.5% | ▲ 1 |
| 4 | Spectrum Dynamics Medical, Inc. | $2.7M | $1.6M | 3.2% | ▲ 7 |
| 5 | V.J. Technologies, Inc | $1.1M | $6.7M | 1.3% | — |
| 6 | Fisica Applied Technologies, Inc. | $1.0M | $1.8M | 1.2% | ▲ 4 |
| 7 | Varian Medical Systems, Inc. | $869K | $869K | 1.0% | ▲ 6 |
| 8 | DEL Medical, Inc | $576K | $615K | 0.7% | ▲ 6 |
| 9 | Hopewell Designs, Inc. | $534K | $895K | 0.6% | ▲ 3 |
| 10 | Rapiscan Systems Inc | $483K | $216K | 0.6% | ▲ 14 |
| 11 | Atlantic Diving Supply, Inc. | $355K | $355K | 0.4% | ▲ 7 |
| 12 | J.L Shepherd and Associates, Inc. | $295K | $495K | 0.3% | ▲ 5 |
| 13 | Varex Imaging Corp | $263K | $2.1M | 0.3% | ▼ 5 |
| 14 | Philips North America LLC | $185K | $18K | 0.2% | ▲ 28 |
| 15 | Kotrack Incorporated | $143K | $0 | 0.2% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Spectrum Dynamics Medical, Inc.$1.6M → $2.7M (+$1.1M) · now #4
- Rapiscan Systems Inc$216K → $483K (+$267K) · now #10
- Philips North America LLC$18K → $185K (+$167K) · now #14
Largest declines
- Marietta Nondestructive Testing LLC$8.7M → $0 (−$8.7M) · no latest-period obligations
- GE Precision Healthcare LLC$39.4M → $31.8M (−$7.5M) · now #2
- V.J. Technologies, Inc$6.7M → $1.1M (−$5.6M) · now #5
New to this market
2 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Kotrack Incorporated | Feb 11, 2026 | $143K |
| DLA Aerospace LLC | Oct 15, 2025 | $14K |
Where the money comes from
Funding sub-agencies within the Department of Defense, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Defense Logistics Agency | $80.5M | $95.3M | Down $14.8M (15.5%) |
| Department of the Air Force | $2.4M | $14.6M | Down $12.2M (83.8%) |
| Department of the Navy | $1.7M | $4.5M | Down $2.8M (63.2%) |
| Defense Health Agency | $1.3M | $1.5M | Down $226K (15.2%) |
| Uniformed Services University of the Health Sciences | $341K | $1.9M | Down $1.5M (81.7%) |
| Department of the Army | $204K | $10.4M | Down $10.2M (98.0%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| SPE2D125F0050 | Siemens Medical Solutions USA, Inc. 8511098383!RAD MAINT | $4.9M | Dec 27, 2026 |
| SPE2D125F0055 | GE Precision Healthcare LLC 8511100668!MAINTENANCE | $3.8M | Dec 30, 2026 |
| FA822725C0001 | Marietta Nondestructive Testing LLC REPAIR OF ICT-1500/2500 DETECTION, CONTROL AND MOTION SYSTEMS IN SUPPORT OF 709TH MAINTENANCE SUPPORT SQUADRON INTERCONTINENTAL BALLISTIC MISSILE AT HILL AIR FORCE BASE. | $7.4M | Jan 30, 2027 |
| HT001422C0009 | Varian Medical Systems, Inc. TWELVE MONTHS OF EQUIPMENT MAINTENANCE SERVICES FOR THE BIOMEDICAL DEPARTMENT AT WALTER REED HOSPITAL. | $4.3M | Mar 29, 2027 |
| SPE2D125F0197 | GE Precision Healthcare LLC 8511383048!MAINTENANCE | $8.0M | May 16, 2027 |
| SPE2D125F0220 | Siemens Medical Solutions USA, Inc. 8511403931!IMAGING ANNUAL MAINT | $6.0M | May 31, 2027 |
| SPE2D126F0066 | Siemens Medical Solutions USA, Inc. 8511811292!CT | $3.0M | Jul 14, 2027 |
| FA469023C0024 | Atlantic Diving Supply, Inc. LEASE OF Z-PORTAL BACKSCATTER INSPECTION SYSTEM FOR TRUCKS AND CARGO | $5.3M | Aug 17, 2027 |
| SPE2D126F0071 | Siemens Medical Solutions USA, Inc. 8511823570!MAINTENANCE | $4.8M | Dec 28, 2027 |
| SPE2D126F0068 | GE Precision Healthcare LLC 8511822984!MAINTENANCE | $3.8M | Dec 30, 2027 |
Common questions
Who are the top DoD contractors for NAICS 334517?
In the latest 12 months, Siemens Medical Solutions USA, Inc. ($42.6M), GE Precision Healthcare LLC ($31.8M), Hologic Sales and Service, LLC ($3.0M) received the most DoD obligations for irradiation apparatus manufacturing.
How concentrated is this market?
The eight largest primes held 97.0% of positive obligations, and Siemens Medical Solutions USA, Inc. alone held 49.3%. 2 contractors won their first obligations in this market during the latest 12 months.
Are any large DoD NAICS 334517 contracts ending soon?
10 of the largest awards in this market reach their current end date in the next 18 months. The first is SPE2D125F0050 (Siemens Medical Solutions USA, Inc., $4.9M obligated), ending Dec 27, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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$373.2MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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