Concrete Pump Boom Inspection - Washington (DOSH)

A concrete placing boom looks like a crane and works like a pipeline, and the damage that brings one down is not always visible from the ground. Washington's concrete pump rule does not rely on looking. Every section of the boom gets nondestructive testing on a fixed schedule, the report travels in the truck, and after a structural failure, an overload, or contact with a power line, the boom does not go back to work until the manufacturer, the manufacturer's agent, or a professional engineer certifies it safe. This Washington Concrete Pump & Boom Inspection Toolbox Talk covers those inspections, the operator qualification rules, and the boom-use limits in WAC 296-155-682(8).

Where the boundary of this talk sits#

This talk covers Washington's inspection, certification, operator qualification, and use limits for concrete pumps and placing booms. Setting up on outriggers, hose whip, line blockages, and working under a boom belong to the concrete pumping talk.

The anchor#

Here is the distinction that carries this whole talk: in Washington a placing boom's structural condition is proven by testing, not by how it looks — an inspection including nondestructive testing of all sections of the boom must be done annually for the first 5 years and semiannually after that, by a qualified person or a private agency, with a signed report kept by the employer and in the unit; and after a structural member fails, the boom is overloaded, or it contacts energized power lines, it must be certified safe by the manufacturer, the manufacturer's agent, or a professional engineer before it returns to service — so a boom that "brushed a line but seems fine" or "has never had a problem" is not cleared to pump until the paperwork says so.

Inspection: annual, then every six months#

WAC 296-155-682(8), under its equipment inspection provisions, requires an inspection annually for the first 5 years and semiannually thereafter. The inspection must include nondestructive testing of all sections of the boom by a method capable of ensuring the boom's structural integrity, and must be conducted by a qualified person or by a private agency.

The schedule tightens as the equipment ages. The rule does not wait for a crack to show at the surface. It requires testing that looks for damage before it can be seen.

The report goes with the truck#

The inspection report must be documented, and a copy kept by the employer and in each unit inspected. It must contain:

• identification of the components and parts inspected and tested, including serial numbers and the manufacturer's name;
• a description of the test methods and results;
• the names and qualifications of the people performing the inspection;
• a listing of necessary repairs; and
• the signature of the manufacturer, an agent of the manufacturer, or a qualified person.

A crew that arrives on site with a pump truck can ask to see that report. It is supposed to be in the unit.

After failure, overload, or a power line#

In the event of failure of a structural member, overloading, or contact with energized electric power lines, and before return to service, the equipment must be certified safe by the manufacturer, an agent of the manufacturer, or a professional engineer.

A power line contact is on that list for a reason. Current passing through a steel boom can damage it in ways no one can see from the ground. After a contact, the pump stays down until the certification is done.

Using the boom#

WAC 296-155-682(8) also sets use limits. A concrete placing boom must not be used to drag hoses or lift other loads. Double-ended hoses must not be used as whip hoses, and attachments such as "S" hooks and valves must not be placed on whip hoses. Outriggers must be used according to the manufacturer's specifications, and concrete pump trucks manufactured after January 1, 1998, must have outriggers marked to show the maximum ground loading. That marking tells the crew what the pads will push into the ground, which is what the soil, slab, or cribbing under them has to carry.

Who may operate the pump#

WAC 296-155-682(8)(c) sets qualification and training requirements for concrete pump operators. A trainee must, among other things:

• have vision of at least 20/30 Snellen in one eye and 20/50 in the other, with corrective lenses allowed; the ability to distinguish colors where color differentiation is required; normal depth perception and field of vision; and hearing adequate for the job, with corrective devices allowed;
• be of legal age to perform the duties;
• demonstrate the ability to read and comprehend the pump manufacturer's operation and safety manual;
• receive documented classroom training and testing, as applicable;
• satisfactorily complete a written examination for the concrete pump boom; and
• maintain, and have available on request, a copy of the training materials and a record of the training.

To be qualified as an operator, the person must also:

• pass a practical operating examination of their ability to operate the specific model and type of equipment;
• possess the knowledge and the ability to implement emergency procedures;
• possess the knowledge of the restart procedure after an emergency stop has been activated; and
• hold the proper class of driver's license to drive the concrete pump truck.

The practical exam is tied to the specific model and type. An operator qualified on one pump is not automatically qualified on a different boom configuration.

The rest of WAC 296-155-682#

The same section covers other concrete equipment. Among its requirements: no entry into bulk storage bins or silos unless the ejection system is shut down and locked out; concrete mixers with loading skips of 1 cubic yard (0.8 m³) or larger must be equipped with the safety devices the rule lists; concrete buckets with hydraulic or pneumatic gates need positive safety latches; and bull float handles that might contact energized conductors must be nonconductive or insulated.

Washington versus federal#

The federal concrete rule, 29 CFR 1926.702(e), requires pipe supports designed for 100 percent overload on pumping systems using discharge pipes, and positive fail-safe joint connectors on compressed air hoses. It does not set a nondestructive testing schedule for placing booms, require an inspection report kept in the unit, require certification by the manufacturer or an engineer after power line contact or overload, or set operator vision and written-exam requirements. Washington does.

Where the duty sits#

WAC 296-155-682(8) sets definitions (a); equipment requirements, including annual-then-semiannual inspection with nondestructive testing, the report kept in the unit, and certification after structural failure, overload, or power line contact (b); operator qualification and training (c); and inspection worksheet criteria (d). For contrast, federal 29 CFR 1926.702(e).

What can go wrong?#

• The boom's last NDT report is two years old and nobody noticed it was due every six months.
• A boom touches a line, trips nothing visible, and pumps the rest of the pour.
• The boom is used to drag the hose across the deck.
• An "S" hook is hung on the whip hose.
• A laborer runs the remote because the operator stepped away.

How do we manage this properly?#

• Ask for the report — it lives in the unit, signed, with test methods and results.
• Know the schedule — annual for the first 5 years, every 6 months after.
• Contact, overload, or failure? Stop — certified by the manufacturer, its agent, or a PE before restart.
• The boom places concrete only — no dragging hoses, no lifting loads.
• Qualified operators only — tested, trained, and on the controls.

Before you start#

Check the inspection report in the pump truck and its date. Walk the boom's path for overhead lines. Confirm who the qualified operator is and that nobody else will take the remote. Check the outrigger marking against what the pads are sitting on.

Talk it over#

• When was this boom's last nondestructive test?
• What do we do if the boom touches a power line?
• Who on site is allowed to run the pump?

The bottom line#

Washington treats a concrete placing boom as a structure that must be proven sound. Every section gets nondestructive testing annually for the first 5 years and every 6 months after, by a qualified person or agency, with a signed report kept by the employer and in the unit. After a structural failure, an overload, or a power line contact, the boom stays down until the manufacturer, its agent, or a professional engineer certifies it. The boom places concrete and nothing else, and only qualified operators run it.

Frequently asked questions about Washington concrete pump rules#

How often must a concrete placing boom be inspected in Washington?

Under WAC 296-155-682(8), an inspection including nondestructive testing of all sections of the boom must be done annually for the first 5 years and semiannually after that, by a qualified person or private agency. A signed report must be kept by the employer and in each unit.

Download the Washington concrete pump and boom inspection toolbox talk PDF#

Download this Washington Concrete Pump & Boom Inspection Toolbox Talk as a printable PDF in English and Spanish, and review it before the pump truck sets up.

Related toolbox talks#

• Concrete Pumping Safety
• Formwork Safety
• Overhead Power Lines
• Struck-By Hazards

Sources#

• Washington State Legislature, WAC 296-155-682 — Requirements for equipment and tools ((2) bulk storage entry and lockout; (4) mixers 1 cubic yard; (8)(a) definitions; (8)(b) inspection annually for the first 5 years and semiannually thereafter, nondestructive testing of all boom sections, qualified person or private agency, report contents kept by employer and in each unit, certification by manufacturer, agent, or professional engineer after structural failure, overload, or power line contact, no dragging hoses or lifting loads, whip hose rules, outriggers and 1998 marking; (8)(c) operator qualification and training; (8)(d) inspection criteria; (9) bucket latches; (11) bull floats; WSR 20-08-117, effective 10/1/20): https://app.leg.wa.gov/wac/default.aspx?cite=296-155-682
• OSHA, 29 CFR 1926.702(e)(1)–(2) (pipe supports for 100 percent overload; fail-safe joint connectors on compressed air hoses): https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.702

Written by FieldSafetyTalk's safety professional — a CSP, ASP, CHST and OSHA Authorized Outreach Trainer with 14+ years of international construction safety experience across federal, heavy civil, and industrial projects.

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