942,588Inspections Most recent open 2026-07-09 Last loaded 2026-07-13
Safety Incidents OSHA Severe Injury Reports · 2015–2025

North Chelmsford, MA —

OSHA Inspection: FREQUENCY SOURCES INC

Planned inspection · Safety discipline

At a glance

On , OSHA opened a planned safety inspection of FREQUENCY SOURCES INC in 166 MIDDLESEX ST, North Chelmsford, MA 01863 (NAICS 000000). OSHA activity number 10016715.

Where did this inspection happen?

Establishment
FREQUENCY SOURCES INC
Site address
166 MIDDLESEX ST
City
North Chelmsford
State
MA
ZIP
01863

What kind of inspection was it?

Inspection type
Planned (H)
Scope
Partial (B)
Discipline
Safety
Union status
B

When did the case open and close?

Opened
Closing conference
Case closed
Data loaded

Establishment context

NAICS code
000000
SIC code (legacy)
3669
Employees
92
Industry flags
Manufacturing safety.

Citations

No citations on file for this inspection. OSHA's citation feed is backfilled in rolling windows; this inspection may have been closed without violations, or its citation rows may not have been ingested yet.

More inspections at FREQUENCY SOURCES INC

View FREQUENCY SOURCES INC's full OSHA safety record →

More inspections in this industry (NAICS 000000)

More inspections in MA

Source

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 10016715.