MANGILAO, GU — 2021-06-24 00:00:00

OSHA Inspection: POLYPHASE SYSTEM INC.

Planned inspection · Safety discipline

At a glance

On 2021-06-24 00:00:00, OSHA opened a planned safety inspection of POLYPHASE SYSTEM INC. in INTERSECTION OF RT15 AND RT26, MANGILAO, GU 96923 (NAICS 238210). OSHA activity number 345384663.

What this inspection record means

OSHA opens inspections for many reasons — routine scheduling under a national or local emphasis program, an employee complaint or referral, or a follow-up after a reported injury. Opening or conducting an inspection is not itself an allegation or a finding that this employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Where did this inspection happen?

Establishment: POLYPHASE SYSTEM INC.
Site address: INTERSECTION OF RT15 AND RT26
City: MANGILAO
State: GU
ZIP: 96923
Mailing: P.O. BOX 21146, BARRIGADA, GU 96921

What kind of inspection was it?

Inspection type: Planned (H)
Scope: Complete (A)
Discipline: Safety
Advance notice: No
Union status: B

When did the case open and close?

Opened: 2021-06-24 00:00:00
Closing conference: 2021-06-24 00:00:00
Case closed: 2024-12-19 00:00:00
Last modified: 2026-07-21 00:00:00
Data loaded: 2026-07-22 00:20:09

Establishment context

NAICS code: 238210
Employees: 11
Ownership type: A

Citations

1 citation on file for this inspection.

1926.652 A01

Serious Gravity 10 1 instance 2 exposed

Issued: Aug 26, 2021
Abate by: Sep 10, 2021
Penalty: Initial $5,461 · Current $4,900 Reduced

General-duty citation text

29 CFR  1926.652(a)(1): Each employee in an excavation was not protected from cave-ins by an adequate protective system designed in accordance with 29 CFR 1926.652 (b) or (c):  Employees were working in an excavation of Type C soil without cave-in protection. The excavation was over 7-feet deep and 3-feet wide with nearly vertical walls.  Employees were exposed to engulfment hazards.

Recent events (3)

2022-05-02 00:00:00 — F (S) $4900
2021-09-27 00:00:00 — C (S) $5461
2021-08-26 00:00:00 — Z (S) $5461

More inspections at Polyphase System INC.

May 9, 2025 TAMUNING, GU May 7, 2024 TAMUNING, GU Oct 17, 2023 TAMUNING, GU Aug 1, 2022 BARRIGADA, GU

View Polyphase System INC.'s full OSHA safety record →

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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 345384663.

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