A measure combining air temperature and humidity to reflect how hot conditions actually feel to workers. Subcontractors use it to assess heat stress risk and trigger mandatory rest breaks or work stoppages. Most site safety plans reference heat index thresholds to stay compliant with occupational health regulations.
Heat Index
Related Terms
Utility Strike
ComplianceAn accidental hit on a buried utility line — gas, electrical, or telecom — during excavation or drilling. Subcontractors face immediate work stoppages, liability exposure, and potential regulatory penalties. Always confirm locate tickets are current before ground disturbance.
CCR (Coal Combustion Residuals)
ComplianceSolid and liquid waste materials produced by coal-fired power plants, including fly ash, bottom ash, and scrubber sludge. Subcontractors handling CCR sites must follow strict federal regulations governing storage, disposal, and remediation. Improper handling can trigger significant liability, so verify site-specific CCR compliance requirements before mobilising.
Local Content Requirement
ComplianceA contractual or regulatory rule requiring subcontractors to hire local workers, source materials locally, or partner with regional firms. Non-compliance can disqualify you from bidding or trigger contract penalties. Common on projects funded by governments or national oil companies.
10 Cfr Part 50
ComplianceA U.S. federal regulation governing the licensing of nuclear power plants and facilities. Subcontractors working on nuclear sites must comply with its strict safety, quality assurance, and documentation requirements. Non-compliance can result in work stoppages or removal from site.
811 (call Before You Dig)
ComplianceA free national service requiring subcontractors to notify utility companies before any ground disturbance. Utilities mark underground lines within 48–72 hours, reducing strike risk. Non-compliance can result in serious liability, fines, and project shutdowns.
Fitness-For-Service (ffs)
ComplianceA formal engineering assessment that determines whether aging or damaged equipment is safe to keep operating. Subcontractors may be required to conduct or document FFS evaluations before resuming work on pressure vessels, pipelines, or structural components. Results directly affect your scope of work, liability exposure, and project timelines.
Latest Compliance News
OSHA Extends Heat Emphasis Program Through 2031, Raising Inspection Risk for Outdoor Crews
OSHA has issued an updated National Emphasis Program on heat hazards that runs through 2031, with compliance officers authorized to conduct random inspections of high-risk industries on days when the heat index hits 80 degrees or more.
1 month ago ComplianceOSHA Sets August Hearings on 20+ Proposed Rule Rollbacks, Including Chemical and Fall Protection Standards
OSHA has scheduled virtual public hearings beginning August 19 on more than 20 proposed deregulatory rules, covering chemical exposure standards, respiratory protection, and fixed ladder safety systems. Subcontractors have until July 6 to register to testify.
yesterday ComplianceTrench Safety Stand Down Set for June 15-19, Registration Now Open
The National Utility Contractors Association is hosting the Trench Safety Stand Down June 15-19, open to all employers doing trench and excavation work. Utility and pipeline subcontractors can register crews online now.
yesterday ComplianceCSB Warns Chemical Facilities to Prep for Hurricane Season Now
The U.S. Chemical Safety Board is urging chemical facilities to complete hurricane preparations before a single storm can trigger a catastrophic release. Gulf Coast maintenance and turnaround subcontractors should expect heightened client scrutiny this season.
2 days agoRelated Guides
When a Jobsite Incident Happens: What Field Workers Need to Know Before Signing Anything
What to do after a jobsite injury or incident, what your rights are before signing incident reports, how workers' compensation works, and how to protect yourself on multi-employer worksites.
Compliance GuideOSHA Citations on Multi-Employer Worksites: What Subcontractors Need to Know
Learn how OSHA's multi-employer citation policy works, why subcontractors get cited for hazards they didn't create, and how to protect your company on operator-controlled job sites.
Compliance GuideHow to Read and Negotiate an Oilfield Master Service Agreement (MSA): A Subcontractor's Guide
Learn which MSA clauses actually matter for oilfield subcontractors: indemnity, insurance, payment terms, and change orders. Know what you're signing.
Stay sharp on field operations
Industry news and insights, delivered to your inbox.
Subscribe to FieldNews