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Class Code Information


Plumbing – NOC – All Operations to Completion & Drivers

Applicable to gas, steam, hot water or other types of fitting.  Includes house connections and shop operations.

Applies to work inside of buildings only.


Code 5183 applies to employers engaged in general plumbing operations which include the installation, fitting, repair and maintenance of various kinds of piping systems in buildings for water, gas and drainage.  This classification contemplates various operations such as installing sinks, bathtubs and toilets, pipe fitting, unclogging drains, replacing fixtures, fixing leaks, etc.   Mostly all plumbing work consists of installation at a customer’s premises.  However, this classification does include shop operations such as pipe cutting, shaping and welding.  Operations may include outside shop repairs and in-shop preparations.

Assignment by Analogy

No Information

Operations to be Separately Rated

  1. Installation:
    1. Automatic sprinkler.  Refer to Code 5188 “Automatic Sprinkler Installation – All Operations to Completion & Drivers.”
    2. Freight carrier systems.  Refer to Code 3724 “Machinery or Equipment Erection or Installation – NOC – All Operations to Completion & Drivers.”          

Industry Group