NDT inspection cost in Groton: Ultrasonic Testing rates
Field-anchored pricing guide for UT (Ultrasonic Testing) and the other five common NDT methods in Groton, CT. Rates are quoted in USD per hour and reflect the Tier-3 labour band that applies across northeast markets.
Electric Boat SUBSAFE work is the gold standard for NDT traceability — every UT and PT record has to defend against the Navy's most rigorous program audit.
Low band
$203
per hour · routine scope, full-day crew
Typical
$383
per hour · most jobs land here
High band
$630
per hour · turnaround / night shift / rope access
Wall-thickness, weld and pressure-equipment inspection per ASME Section V and API 510/570/653.
Conventional UT (0.5–25 MHz contact or immersion) is the workhorse method on in-service pressure equipment. Costs scale with crew rotation length, instrument count, and access cost (rope access, scaffold, confined-space entry).
Groton's industrial substrate — Submarine construction, USN submarine base, Pharmaceutical manufacturing — pulls NDT scopes onto recurring sites including General Dynamics Electric Boat and Naval Submarine Base New London. The local contractor pool prices against NAVSEA SUBSAFE acceptance criteria, which requires Level II / III certified personnel and traceable instrument calibration. That floor — not raw wage data — is what sets the band.
The Tier-3 multiplier (×0.90 applied to the national UT base band) accounts for local cost of living, procurement competition, and the documentary overhead that NAVSEA SUBSAFE imposes. UT programmes in Groton have historically clustered around the typical rate of $383 per hour, with turnaround and outage premiums pushing toward the high band.
Recurring industries pricing against this band:
Named operators / sites: General Dynamics Electric Boat, Naval Submarine Base New London.
Crew rotation length
Multi-day mobilisations in Groton amortise travel and per-diem across more billable hours, lowering the per-hour rate. Single-day call-outs sit at the high band.
Access and rigging
Rope access, scaffold, or confined-space entry add 15–35% to the base rate. Submarine construction sites in Groton often require all three.
Shift premium
Night shift, weekend, and turnaround windows in Groton typically carry a 25–40% premium on the base hourly rate.
Acceptance criteria
NAVSEA SUBSAFE acceptance criteria require Level II / III sign-off, which prices above structural-weld AWS D1.1 work.
Equipment specification
Crew rotation and equipment count drive cost; couplant and consumables are negligible.
Programme volume
Multi-asset programmes at sites like General Dynamics Electric Boat typically negotiate volume discounts of 8–15% off the typical rate.
Mobilisation distance
Remote northeast sites add a per-trip mobilisation charge ($350–$1,500 depending on travel distance from Groton).
Documentation depth
Full digital scan packages with audit-grade traceability cost 10–20% more than basic written report deliverables, and are required at NAVSEA SUBSAFE sites.
- 1.Plan UT scopes against the northeast turnaround calendar to avoid rush premiums.
- 2.Batch multiple assets at the same site (e.g. General Dynamics Electric Boat) to amortise mobilisation across more billable hours.
- 3.Provide detailed component specs and accessibility info up-front — vague RFPs price high to absorb uncertainty.
- 4.Standardise on a single contractor for programme work; spot-buys carry a 10–20% premium.
- 5.Where UT is interchangeable with another method (RT ↔ PAUT, MT ↔ PT), price both before committing.
- 6.Verify Level II / III currency before quote — re-mobilisation for an expired cert is unbillable to the asset.
- •Pipe and vessel wall-thickness surveys (API 570 / 510)
- •Weld inspection per ASME Section V
- •Storage tank shell and floor scanning (API 653)
Method
Ultrasonic Testing
Abbreviation
UT
Labour band
Tier 3 (×0.90)
Code authority
NAVSEA SUBSAFE
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Request a quotePricing caveat
The numbers above are field-anchored ranges, not a quote. Actual Groton rates vary with scope, accessibility, shift, and contractor utilisation. Always solicit at least three quotes before committing programme spend.