100+ Free San Lei Ren Yuan (三类人员) Practice Questions

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2026 Statistics

Key Facts: San Lei Ren Yuan (三类人员) Exam

3 Years

Validity period of the Safety Production Assessment Certificate (三类人员证书)

MOHURD Decree No. 17

60%

Standard passing score threshold on the computer-based assessment

Provincial Housing & Urban-Rural Development Departments

≥ 5 m

Excavation depth requiring mandatory expert panel verification (危大工程专家论证)

MOHURD Decree No. 37 & Notice 31

≥ 8 m / 18 m

Formwork support height / span thresholds requiring expert verification

MOHURD Decree No. 37 & Notice 31

≤ 30 mA / 0.1 s

Rated residual operating current and time for site switchbox RCD protectors

JGJ 46-2005 / JGJ/T 46-2024

1 Hour

Statutory deadline for enterprise head to report site accidents to authorities

State Council Decree No. 493

The Construction Enterprise Safety Officer Assessment (三类人员考核) is the provincial safety assessment for construction enterprise leaders (A), project leaders (B), and full-time safety personnel (C, with local subcategories). Provincial authorities publish the current question count, duration, fee, and delivery details; they are not one national fixed form. This 100-question bank is an English-language MCQ study adaptation of common legal, management, high-risk-work, electrical, mechanical, and fire-safety content.

Sample San Lei Ren Yuan (三类人员) Practice Questions

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1Under Article 21 of the PRC Work Safety Law (中华人民共和国安全生产法), which of the following duties is legally designated as a primary responsibility of the enterprise's main person in charge (企业主要负责人)?

A.Establishing, improving, and implementing the enterprise's all-personnel work safety responsibility system

B.Directly conducting daily on-site safety patrols and recording individual worker violations

C.Drafting specific technical calculations for temporary load-bearing scaffolding schemes

D.Operating tower cranes and heavy hoisting machinery during critical structural lifts

Explanation: Article 21 of the PRC Work Safety Law explicitly assigns statutory leadership duties to the enterprise's main person in charge (Category A personnel). These duties include establishing and implementing the all-personnel work safety responsibility system, organizing work safety rules and operating procedures, ensuring safety funding input, and organizing emergency response planning.

2According to Article 25 of the PRC Work Safety Law, which of the following is a statutory duty of full-time safety production management personnel (专职安全生产管理人员)?

A.Allocating corporate financial dividends and setting overall annual enterprise revenue targets

B.Inspecting work safety conditions, rectifying hidden hazards in a timely manner, and implementing safety control measures

C.Signing commercial subcontracts and negotiating construction materials purchase prices

D.Approving architectural design modifications and structural alterations with municipal planning authorities

Explanation: Article 25 of the Work Safety Law defines the duties of safety management personnel, focusing on day-to-day hazard prevention. They must regularly inspect site safety conditions, investigate and eliminate safety hazards, stop and rectify illegal commands or violations, and monitor the implementation of safety control measures.

3Under the PRC Work Safety Law, what statutory right protects construction site workers when a site supervisor orders them to perform operations under immediately hazardous conditions that violate safety protocols?

A.The right to continue only after receiving an oral assurance from the supervisor

B.The right to refuse only after a government inspector issues a written stop-work order

C.The right to refuse dangerous directives (强令冒险作业拒绝权) and stop work in emergency life-threatening conditions

D.The right to refuse only if every worker on the shift votes to stop

Explanation: Article 54 of the PRC Work Safety Law protects a worker's refusal of unlawful commands or forced risky operations. Article 55 permits a worker facing an emergency that directly threatens personal safety to stop work or evacuate after taking feasible emergency measures.

4According to the Regulations on the Safety Management of Construction Projects (State Council Decree No. 393, 建设工程安全生产管理条例), when a general contracting unit (总承包单位) lawfully subcontracts part of a project, what are the safety liability relationships between the general contractor and the subcontractor?

A.The subcontractor bears sole and exclusive liability, completely exempting the general contractor from administrative penalties

B.The general contractor bears zero safety responsibility once the subcontract agreement is registered with the housing authority

C.The municipal housing department assumes direct civil liability for any subcontractor accident

D.The general contractor is responsible for overall site safety, and the general contractor and subcontractor bear joint and several liability (连带责任) for subcontracted works

Explanation: Decree No. 393 stipulates that the general contractor is responsible for the overall safety of the construction site. When a project is lawfully subcontracted, the general contractor and the subcontractor bear joint and several liability (连带责任) for the safety of the subcontracted work. If the subcontractor disobeys safety management and causes an accident, the subcontractor bears primary responsibility, but joint liability remains.

5Under State Council Decree No. 393, which of the following actions by a construction project owner / development unit (建设单位) is strictly prohibited by law?

A.Arbitrarily compressing the reasonable construction period (压缩合理工期) or demanding reductions in safety measures expenses

B.Providing genuine and accurate underground utility pipeline data to the勘察 and construction units

C.Disbursing progress payments strictly in accordance with certified milestones in the construction contract

D.Organizing joint completion acceptance inspections with municipal urban development bureaus

Explanation: State Council Decree No. 393 explicitly prohibits construction units (owners) from arbitrarily shortening the reasonable construction schedule or compelling contractors to lower statutory costs for safety protection and civilized construction measures. Such pressure directly compromises safety engineering controls.

6Under State Council Decree No. 393 and MOHURD Decree No. 17, what is the core statutory role of the Project Manager (项目负责人 / Category B personnel)?

A.Managing municipal municipal bond issuances to fund public urban infrastructure works

B.Assuming comprehensive responsibility for the safety production of the specific construction engineering project

C.Exercising exclusive judicial authority over labor contract wage disputes on site

D.Issuing formal national construction company business licenses on behalf of provincial governments

Explanation: Under Decree No. 393 and MOHURD Decree No. 17, the Project Manager (Category B, typically a registered constructor) is appointed by the enterprise to take comprehensive operational responsibility for safety production on the designated construction project, implementing safety regulations, budgets, and hazard controls.

7Under MOHURD Decree No. 17 (Provisions on Safety Production Management of Construction Enterprise Key Personnel), what is the statutory validity period of the Safety Production Assessment Certificate (安全生产考核合格证书), and when must renewal be requested?

A.Valid for 1 year; apply for renewal within 15 days before expiration

B.Valid for 5 years; apply for renewal within 6 months before expiration

C.Valid for 3 years; apply for renewal within 3 months before expiration (期满前3个月内)

D.Valid permanently with no requirement for continuing education or renewal

Explanation: Under MOHURD Decree No. 17, the Safety Production Assessment Certificate for Categories A, B, and C personnel is valid for 3 years nationwide. Within 3 months prior to expiration, the holder's enterprise must submit an application for certificate extension, accompanied by proof of continuing safety education.

8MOHURD Decree No. 17 categorizes construction enterprise safety management personnel ('San Lei Ren Yuan' 三类人员) into three distinct certificate categories: A, B, and C. Which certificate corresponds to the enterprise's legal representative, general manager, and technical director?

A.Category C Certificate (专职安全员证书)

B.Category B Certificate (项目经理证书)

C.Category D Certificate (监理工程师证书)

D.Category A Certificate (企业主要负责人证书)

Explanation: Category A (Class A) certificates are issued to the Enterprise Main Persons in Charge (企业主要负责人), encompassing the legal representative, general manager, deputy general managers in charge of safety, and chief technical officer/chief engineer.

9Under MOHURD implementation guidance (建质〔2015〕206号), Category C full-time safety management personnel are sub-divided into C1, C2, and C3. What specialty does a C1 certificate certify?

A.Machinery safety management (机械安全管理 - construction hoists, tower cranes, and lifting equipment)

B.Civil and architectural structural safety management only (土建类)

C.Financial accounting and payroll tax compliance

D.Environmental ecology and landscape horticultural design

Explanation: Under Notice [2015] No. 206, Category C personnel are divided into: C1 (Machinery / 机械类, specialized in hoisting and heavy construction machinery), C2 (Civil/Building / 土建类, focusing on structural, earthwork, and scaffolding works), and C3 (Comprehensive / 综合类, combining both civil and mechanical safety duties).

10Under the Regulations on Work Safety Licenses (State Council Decree No. 398, 安全生产许可证条例), what is the validity period of an enterprise Work Safety License, and under what condition may it be renewed without re-examination?

A.Valid for 3 years; renewal always requires a new licensing examination even with a compliant record

B.Valid for 3 years; if no fatal accidents occurred during the 3-year term, the term may be extended for 3 years upon application without substantive re-assessment

C.Valid for 5 years; it renews automatically if no administrative fine was imposed

D.Valid for 3 years; an accident-free record permits renewal without submitting an application

Explanation: Under Decree No. 398, a Work Safety License is valid for 3 years. If the enterprise strictly complies with safety laws and incurs no fatal production safety accidents during the 3-year validity period, the license may be extended for another 3 years upon application without substantive on-site re-examination.

About the San Lei Ren Yuan (三类人员) Exam

The Construction Enterprise Safety Officer Assessment (建筑施工企业主要负责人、项目负责人和专职安全生产管理人员安全生产考核, commonly termed 'San Lei Ren Yuan' 三类人员考核) is the mandatory safety production qualification examination in China governed by MOHURD Decree No. 17, the PRC Work Safety Law, and State Council Decree No. 393. It certifies corporate executives (A-cert), project managers (B-cert), and dedicated site safety supervisors (C-cert / C1 Machinery, C2 Civil, C3 Comprehensive) to manage construction hazards. The exam tests statutory safety responsibilities, safety measures funding (安全文明施工措施费), the dual prevention mechanism (风险分级管控与隐患排查治理), dangerous and large-scale engineering works (危大工程 under MOHURD Decree 37), temporary electrical safety (JGJ 46 TN-S system), scaffolding safety (JGJ 130), formwork support stability (JGJ 162), working at heights (JGJ 80), and site fire safety (GB 50720). Officially conducted in Chinese, this OpenExamPrep question bank provides an English-language MCQ study adaptation.

Assessment

The assessment evaluates three distinct personnel categories under MOHURD Decree No. 17: Category A (Enterprise Main Persons in Charge / 企业主要负责人: legal representatives, general managers, technical directors, and safety executives), Category B (Project Managers / 项目负责人: registered constructors appointed as project leaders), and Category C (Full-time Safety Management Personnel / 专职安全生产管理人员: categorized into C1 Machinery, C2 Civil/Building, and C3 Comprehensive). Content covers legal requirements, safety responsibility systems, dangerous engineering management (MOHURD Decree 37), temporary power distribution (JGJ 46), scaffolding (JGJ 130), formwork (JGJ 162), work at heights (JGJ 80), and fire safety (GB 50720).

Time Limit

Varies by province and A/B/C category; see the current provincial notice

Passing Score

Set provincially; Ningxia's 2026 assessment uses 60 out of 100

Exam Fee

Set provincially; Jilin's 2026 assessment notice states that no fee is charged (Provincial Housing and Urban-Rural Development Departments (各省住房和城乡建设厅 / MOHURD))

San Lei Ren Yuan (三类人员) Exam Content Outline

25%

Safety Production Laws, Regulations & Policies (安全生产法律法规)

PRC Work Safety Law (Article 21 primary responsibilities, Article 25 safety personnel duties, Articles 54–55 refusal and emergency-evacuation rights, and Article 57 PPE duties), Construction Safety Regulations (State Council Decree 393), Safety Personnel Provisions (MOHURD Decree 17), Work Safety License Regulations (Decree 398), Emergency Response Law, and enterprise legal liabilities

25%

Construction Safety Management & Dual Prevention (建筑施工安全管理与双重预防)

All-personnel safety production responsibility system, dedicated safety measures expenditure (安全文明施工措施费用 earmarking and supervision), dual prevention mechanism (risk tiered classification and hidden danger investigation/governance), three-level safety education (enterprise, project, team), safety technical disclosures (written and signed), accident reporting classifications and timelines under State Council Decree 493, and site emergency plans

30%

High-Risk Engineering & Technical Standards (危大工程与高危作业安全技术)

Dangerous and large-scale engineering works under MOHURD Decree 37 & Notice 31 (specialized scheme drafting, enterprise technical director approval, chief supervising engineer sign-off, expert panel review for deep excavations ≥5m, formwork height ≥8m or span ≥18m or load ≥15 kN/m² or linear load ≥20 kN/m, scaffolding ≥50m, cantilever scaffolding ≥20m), JGJ 130 scaffolding safety (fastener torque 40–65 N·m, sweeping rods at 200mm, continuous scissor braces, tie-in points), JGJ 80 working at heights (edge railings 1.2m/0.6m, toe board ≥180mm, hole covers), and excavation slope stability

20%

Site Mechanical, Electrical & Fire Safety (施工机械、临时用电与现场消防安全)

Temporary power supply under JGJ 46 (TN-S 3-phase 5-wire zero-protection system, PE wire separation, 3-level distribution and 2-level residual-current protection), tower cranes and construction hoists (safety limiters, anti-fall devices, and manufacturer/site wind limits), and site fire safety under GB 50720 (fire separation, temporary fire water, hot-work controls, and dormitory separation)

How to Pass the San Lei Ren Yuan (三类人员) Exam

What You Need to Know

Passing score: Set provincially; Ningxia's 2026 assessment uses 60 out of 100
Assessment: The assessment evaluates three distinct personnel categories under MOHURD Decree No. 17: Category A (Enterprise Main Persons in Charge / 企业主要负责人: legal representatives, general managers, technical directors, and safety executives), Category B (Project Managers / 项目负责人: registered constructors appointed as project leaders), and Category C (Full-time Safety Management Personnel / 专职安全生产管理人员: categorized into C1 Machinery, C2 Civil/Building, and C3 Comprehensive). Content covers legal requirements, safety responsibility systems, dangerous engineering management (MOHURD Decree 37), temporary power distribution (JGJ 46), scaffolding (JGJ 130), formwork (JGJ 162), work at heights (JGJ 80), and fire safety (GB 50720).
Time limit: Varies by province and A/B/C category; see the current provincial notice
Exam fee: Set provincially; Jilin's 2026 assessment notice states that no fee is charged

Keys to Passing

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San Lei Ren Yuan (三类人员) Study Tips from Top Performers

1Memorize the legal responsibilities of enterprise leaders (Article 21) versus safety management personnel (Article 25) under the PRC Work Safety Law.

2Master the quantitative thresholds for MOHURD Decree 37 dangerous works (危大工程): deep excavation ≥3m (general) vs ≥5m (expert review); formwork support height ≥5m vs ≥8m, span ≥10m vs ≥18m, load ≥10 vs ≥15 kN/m², linear load ≥15 vs ≥20 kN/m; scaffolding height ≥24m vs ≥50m.

3Know JGJ 46 temporary electricity requirements cold: TN-S system (3 phases, N neutral, PE protective ground), green/yellow PE conductor, repeated grounding resistance ≤10Ω, RCD ≤30mA/≤0.1s (and ≤15mA in wet areas), and 'one machine, one switch, one leakage protector, one box'.

4Drill JGJ 130 scaffolding construction rules: coupler tightening torque 40–65 N·m, sweeping rods at ≤200mm from base, continuous scissor braces for double-row scaffolds ≥24m inclined at 45°–60°, and tie-in points (连墙件) rigid connections.

5Understand JGJ 80 work-at-height safety rules: height benchmark ≥2m, edge protective railings at 1.2m top and 0.6m mid-rail with ≥180mm toe board, hole covers for openings <50cm, and railings/nets for openings >150cm.

6Master accident investigation classifications under State Council Decree 493: General (<3 deaths), Relatively Large (3–9 deaths), Major (10–29 deaths), Special Major (≥30 deaths), the 1-hour unit reporting deadline, and 30-day casualty update window.

Frequently Asked Questions

What are the three personnel categories ('San Lei Ren Yuan') under MOHURD Decree No. 17?

The three statutory personnel categories are: Category A (Enterprise Main Persons in Charge / 企业主要负责人: legal representatives, general managers, branch managers, and safety directors responsible for enterprise-wide safety); Category B (Project Managers / 项目负责人: registered constructors holding statutory project management responsibility for specific construction sites); and Category C (Full-time Safety Management Personnel / 专职安全生产管理人员: certified personnel dedicated to on-site daily safety inspections, sub-classified into C1 Machinery, C2 Civil/Building, and C3 Comprehensive).

What is the dual prevention mechanism (双重预防机制) in Chinese construction safety?

The dual prevention mechanism is the national core framework consisting of two proactive defense lines: (1) Safety Risk Tiered Classification and Control (安全风险分级管控), which identifies hazard sources and classifies risks into red (major), orange (greater), yellow (general), and blue (low) to implement preventive engineering/administrative controls; and (2) Hazard Investigation and Governance (隐患排查治理), which systematically discovers, logs, and remediates site hidden dangers to eliminate risks before accidents occur.

What are the key technical criteria for 'Exceeding a Certain Scale' dangerous works (超一定规模的危大工程) requiring expert review?

Under MOHURD Decree 37 and Notice 31, specialized schemes requiring a 5-or-more member expert review panel include: deep excavations with excavation depth ≥5m; concrete formwork support with height ≥8m, span ≥18m, total design load ≥15 kN/m², or concentrated line load ≥20 kN/m; floor-standing steel pipe scaffolding with height ≥50m; cantilever scaffolding with height ≥20m; and hoisting operations using unconventional methods with single piece weight ≥100 kN or cranes with capacity ≥300 kN.

What are the mandatory requirements for temporary site power under JGJ 46?

JGJ 46 mandates: (1) TN-S three-phase five-wire power supply system where the PE protective neutral line is strictly separated from the working neutral line (N) and never switched or fused; (2) Three-level distribution and two-level leakage protection (main distribution box -> sub-distribution box -> switch box); (3) 'One machine, one switch, one leakage protector, one box' (一机一闸一漏一箱); and (4) RCD rated residual operating current ≤30mA and operating time ≤0.1s (reduced to ≤15mA and ≤0.1s in wet or corrosive locations).

How are production safety accidents classified and reported under State Council Decree 493?

Decree 493 classifies accidents into four tiers: General (<3 deaths, <10 serious injuries, or <10M RMB direct economic loss), Relatively Large (3–9 deaths, 10–49 serious injuries, or 10M–50M RMB), Major (10–29 deaths, 50–99 serious injuries, or 50M–100M RMB), and Special Major (≥30 deaths, ≥100 serious injuries, or ≥100M RMB). On-scene personnel must report immediately to the unit leader, who must report to local housing and emergency management authorities within 1 hour. Any change in casualties within 30 days must be promptly supplemented.