Quality Policies

Responding accurately and promptly to customer needs, we provide high-quality building equipment that will earn the satisfaction and trust of our customers.

We are making efforts to promote systematic safety and quality management, and to improve the efficiency of our work through continuous review of our quality systems.

Based on the above policies, each division establishes quality targets and verifies the results.

Quality Assurance

At Hibiya Engineering, where our core business is construction management of various types of equipment work, we provide safety, security, and comfort to customers based on the fundamental principles of “quality first” and “improvement of customer satisfaction.”

Quality enhancement through ISO 9001 system operation

With the aim of achieving uniformity of quality, improving customer trust, and devising effective quality control, we obtained ISO 9001 certification at all locations and have been able to achieve a certain level of results. We will work to improve customer satisfaction by continuing to enhance our quality control system activities to provide high-quality products and services.

Construction Quality Control Framework

① Organizing a construction study group and construction management patrols
② Utilization of identified and improved items
③ Quality control rounds, interim and completion inspections
④ Customer satisfaction surveys

Preventing defects through strengthened interim inspections

Quality control in construction projects is crucial, and ensuring quality throughout the production process extremely important. The only way to mitigate risks is to thoroughly manage the on-site construction process from start to finish and proactively eliminate risks step by step. To ensure construction quality, we implement interim inspections and quality checks (including quality patrols by senior personnel) based on quality control plans tailored to each site. At the same time, we are working to improve workers’ understanding of the work and fostering a greater awareness of quality assurance through corrective instructions and guidance.

Construction items to achieve objectives in quality plans during construction stage

  1. Quality control based on quality plan* to achieve quality required in design drawings and documents

  2. For items requiring verification, conduct tests or inspections based on quality plan

  3. If any questions arise, such as when test or inspection results fall outside the control limits, appropriate action will be taken in accordance with the quality plan. The cause will be investigated, and necessary measures taken to prevent a recurrence

    * The quality plan specifically outlines the target quality for the construction, quality control, and management system.

On-site construction quality control framework

Improvement of On-site Capabilities by Proposal of Technical and Operational Improvements

In order to improve on-site capabilities across the Company, we collect examples and proposals for technical and operational improvements from on-site employees and cooperating companies from each workplace (on-site operations), evaluate them through an internal evaluation team, and share and disseminate this information horizontally via our in-house portal site. Excellent proposals are recognized by Main Office and branch managers, and outstanding improvement examples and proposals are recognized by the president. This evaluation, along with incentives, helps to increase the motivation of proposers.

Number of on-site work improvement proposals

Period

No. of Proposals
(Engineering Service Division employees + cooperating companies)

Fiscal 2022

454

Fiscal 2023

475

Fiscal 2024

453

Disseminating the Results of Complaints and In-house Inspection Analysis within the Company

In fiscal 2024, the number of complaints that occurred in all locations was 34. We are working to prevent recurrence of complaints by holding participatory study sessions for each type of construction work with our cooperating companies, and by strengthening quality patrols and interim inspections to prevent defects from occurring.

Analysis (breakdown) of complaints in the past 2 years

Period

No. of complaints

Fiscal 2023

46

Condensation, leakage

Design, other

Performance, product defects

Others

12

13

16

5

Fiscal 2024

34

Condensation, leakage

Design, other

Performance, product defects

Others

11

8

12

3

Support for Employees to Acquire Official Qualifications

We are focusing on helping employees acquire official qualifications that are particularly necessary for our business activities, with the aim of improving the technical skills of our employees and ensuring quality. We have created a list that shows at a glance the type of qualification, application submission period, exam date, exam institution, and eligibility to take the exam, and this is useful for employees’ plans to obtain qualifications. Also, in the case of first-class construction management engineer qualification acquisition, we have been following up with employees in their 20s and 30s since fiscal 2012, with the aim of their obtaining the qualification at an early stage.

Number of employees that have acquired major qualifications (as of March 31, 2025)

Name of qualification 

No. of qualified persons

Professional Engineer

4

Equipment Design
First-class Architect

9

First-class Architect

16

Building Equipment
Specialist

71

First-class Plumbing Work
Operation and
Management Engineer

412

First-class Electrical Work
Operation and
Management Engineer

177

First-class Civil Engineering Works Execution Managing Engineer

6

First-class Building Operation and Management Engineer

9

Name of qualification

No. of qualified persons

Chief Electrical Engineer
(Type 1 to Type 3)

17

Type 1 Electrical Engineer

73

First-class Instrumentation
Officer

49

Fire Defense Equipment
Officer (Class A, Group 1)

280

Fire Defense Equipment
Officer (Class A, Group 4)

161

Chief Water Supply
Systems Construction
Engineer

92

Designated Construction
Supervision Technician

432

First-class Construction
Industry Accountant

10

Energy Conservation Master Program: Upgrading technical skills and human resource development

The Group established its own human resource certification program, the Energy Conservation Master Program, 13 years ago, and has been continuously working to improve our technical skills in the environmental field and develop highly skilled human resources. This program certifies employees based on three evaluation criteria: advanced specialized energy-saving skills, the ability to make high-quality proposals to customers, and the ability to realize them in practice. In fiscal 2024, 35 new employees obtained the qualification, bringing the total number of qualified employees since the program’s inception to 419. 

Through the operation of this program, each employee is improving their ability to present valuable, specific improvement measures to customers based on the results of their energy-saving diagnoses. In this way our customer satisfaction will be further improved, and our competitive advantage in the market will be strengthened. Also, by standardizing energy-saving diagnostic techniques and evaluation criteria within the program, we have established a system that allows us to consistently provide high-quality diagnostic services that are consistent across the entire company. In addition, by providing a clear goal of obtaining this qualification, we have created an environment in which employees can gain a sense of accomplishment, contributing to their motivation for self-development and clarifying their career development.

As a “green engineering company,” the Group is stepping up its efforts in research, development, and implementation of decarbonization and low-carbon technologies, and is actively proposing technologies for the use of renewable energy and the realization of Net Zero Energy Buildings (ZEBs). In addition, we are deepening our initiatives regarding SDGs and ESG, and creating an educational environment where all employees can continuously acquire the latest technical knowledge through our in-house portal and e-learning, and apply it to their work.

Through these initiatives, we aim to contribute to the realization of a sustainable society and achieve a high level of business growth and social contribution at the same time.