4-Aminodiphenyl requirements

No — the requirements for 4‑Aminodiphenyl in shipyard employment are identical to the ones in the general industry standard. See 1915.1011 which explicitly states the shipyard requirements are identical to 1910.1003.

You must follow the detailed obligations found in the general industry rule at 1910.1003. 1915.1011 makes the shipyard requirements identical to 1910.1003, so read that standard for the specific duties on exposure monitoring, medical surveillance, employee information and training, labeling, and any regulated‑area controls.

Covered employees include those working in shipyard employment where the substance is used, handled, or could result in exposure, including contractor and temporary workers performing shipyard tasks. 1915.1011 says shipyard requirements are identical to 1910.1003, and OSHA coverage applies to employees performing work in the shipyard environment regardless of their employer type, so contractors and temporary workers must be protected under the applicable provisions of 1910.1003.

Follow the State Plan's requirements if your state operates an OSHA‑approved plan and its rules differ, because State Plans must be at least as effective as Federal OSHA. The shipyard rule 1915.1011 defers to 1910.1003 for content, but an OSHA‑approved State Plan may have its own comparable or more stringent requirements; see the discussion of State Plan coverage in OSHA interpretations such as the rim wheel servicing letter at https://www.osha.gov/laws-regs/standardinterpretations/2024-08-01 for how State Plans can affect applicability and enforcement.

Yes — employers must comply with all applicable shipyard standards in Part 1915 in addition to the 4‑Aminodiphenyl requirements, because 1915.1011 only states that the 4‑Aminodiphenyl requirements are identical to those in 1910.1003; it does not suspend other shipyard obligations found elsewhere in Part 1915.

Yes — reference the shipyard 4‑Aminodiphenyl rule as 1915.1011 and note that its requirements are identical to 1910.1003. That wording makes clear to employees and compliance staff that the shipyard obligations mirror the general industry standard for 4‑Aminodiphenyl.

You can find references to the rulemaking history in the 1915.1011 entry itself — 1915.1011 includes Federal Register citations (for example, 58 FR 35572, July 1, 1993, and later notices). For the substantive requirements, consult 1910.1003 which contains the detailed regulatory text and related preamble information.

The shipyard section points you to the general industry rule for substance‑specific limits rather than restating numeric limits in 1915.1011. See 1915.1011, which makes the shipyard requirements identical to 1910.1003; you must consult 1910.1003 to find any numeric exposure limits, action levels, or specific monitoring procedures that apply to 4‑Aminodiphenyl.

Yes — complying with the provisions of 1910.1003 satisfies the shipyard obligations because 1915.1011 states the shipyard requirements are identical to that general industry standard. Make sure any procedural details — training, posting, monitoring, and medical follow‑up — are implemented as spelled out in 1910.1003.

Contact your regional OSHA office for interpretation or enforcement questions about shipyard work and 4‑Aminodiphenyl, and reference 1915.1011 and 1910.1003 when you do. OSHA interpretation letters and guidance often provide a regional contact example (see, for example, the stair width interpretation at https://www.osha.gov/laws-regs/standardinterpretations/2024-10-17, which explains how to request further clarification and provides contact pathways).