Jacobs Process Engineer for Heating, Ventilation & Air Conditioning System / UK EPR in Bristol, United Kingdom

Process Engineer for Heating, Ventilation & Air Conditioning System / UK EPR


Jacobs is one of the world’s largest and most diverse providers of full-spectrum technical, professional and consultancy services for industrial, commercial and government organisations globally.

With more than 74,000 people globally, our teams collaborate, innovate and create. Our people are proud to have been behind some of the greatest consultancy and engineering feats over the past 70 years.

We foster a collaborative and inclusive environment for our people, and our partners, and we want you to be a part of our growing business.

With more than fifty years of Nuclear experience, Jacobs has unrivalled nuclear capability and provides full life-cycle solutions to our nuclear clients. Services include programme and project management, design and engineering, reactor support, construction, commissioning, operations, maintenance, (radioactive) waste management, decommissioning and clean-up.

We have consistently delivered value and innovation to technically challenging and complex nuclear and environmental-related projects by offering multidisciplinary capabilities, technical expertise, proven processes and a commitment to regulatory compliance, health, safety and quality workmanship.

Job Purpose:

The HVAC System Engineer is in charge of the system documents containing all the information on the design and the operation of the ventilation systems in the Balance of Nuclear Island (BNI). The HVAC System Engineer is responsible for writing the system design manuals (description, sizing, P&ID and I&C) and updating them.

The system engineer may be responsible for the production of one or more SDM, depending on the complexity of the systems.

Main Activities:

Based on the specification, the preliminary safety report and the engineering guidelines, the ventilation system engineer:

  • Writes the System Design Manual for the system:

o Describes the system, its role and missions (including safety missions).

o Carries out system operating engineering.

o Performs aeraulic and thermal design calculations for the system and its components.

o Provides the input data to the mechanical draftmens for the production of P&IDs and checks their technical consistency.

o Provides the appropriate P&IDs for the 3D model and checks the 2D/3D consistency.

o Writes the technical specifications for instrumentation and control.

o Oversees the documents produced by equipment suppliers.

o Supplies information to all “equipment” databases.

  • Writes instrumentation and control test procedures

  • Writes the protocols for start-up testing, periodic testing and maintenance-related testing:

o Writes analysis reports

o Writes testing rules

o Writes the overall programme

  • Manages system modifications

o handles modification requests from the various companies engineering teams involved

o Checks the consistency of these modifications, systematically challenges their necessity, informs the engineering teams and ensures with them the validity of the modifications before incorporating them into the SDM and the 3D model

  • Deals with requests from all engineering teams concerning the system, main input data for the majority of engineering teams

The system engineer works in cooperation with all engineering teams: layout group, civil engineering, equipment, pipework, electricals, etc.

Note1: This job description is not an exhaustive list of the responsibilities & activities that the job holder may be required to undertake

Note2: Travel costs for non-local candidates are not paid

Note3: Expected to attend during normal working hours Monday to Friday

Note4: BPSS level security required



  • Mechanical general engineer, specialising in thermal and climate engineering

  • Engineer to Chartered Engineer – considered

  • Interpersonal skills.

  • A proactive attitude

  • Ability to prioritise

  • Manage numerous interfaces, to question and understand the imperatives for other downstream disciplines.

  • Ability to meet commitments and deadlines


  • Knowledge of atomic and nuclear engineering

  • Knowledge of nuclear safety relating to design or operations

  • Knowledge of the characteristics and operation of PWRs

  • A knowledge of instrumentation and control would be an advantage

  • Ability to speak and write technical documents in French

Our Culture

At Jacobs we have recently celebrated 10 years of our culture of caring - ‘BeyondZero’. We see safety differently - we strive to go BeyondZero by putting the health, safety and well-being of our employees first in everything we do.

We are committed to equality across our business and we promote STEM and WISE (Women in Science & Engineering) initiatives. When you join Jacobs you will have access to a wide range of Global Networks, centred on inclusion and diversity. To find out more about our networks, check out our website:


We encourage applications from candidates looking for flexible working or reduced hours’ contracts.

Successful candidates will be asked to complete a Baseline Personnel Security Standard Pre-Employment check and will be required to undergo various checks including: Identity, Right to Work; Employment/Education History and Criminal Record. If you are unable to meet this and any associated criteria, then your employment may be delayed or rejected.

JACOBS is an Equal Opportunity Employer who is committed to the safety and wellbeing of all.

Primary Location United Kingdom-United Kingdom Countrywide-Bristol

Req ID: ATE00000D