PEB Singapore PPE Mechanical key terms

An engineer registered with Singapore's Professional Engineers Board under the Professional Engineers Act, entitled to take professional responsibility for mechanical engineering works and to submit statutory plans and calculations.

A person appointed under the Building Control Act to prepare, submit and supervise building plans and works; mechanical submissions require a QP who is a registered Professional Engineer.

Rules under Singapore's Professional Engineers Act setting expected standards of integrity, competence, independence and public safety for registered engineers, breach of which can lead to disciplinary action.

A circumstance where an engineer's financial, personal or other interest could improperly influence professional judgement; it must be disclosed and managed, or the engineer should withdraw from the decision.

Insurance protecting an engineer or firm against claims for negligence, error or omission in professional services, covering legal defence and compensation up to a stated limit.

Structured learning, training and professional activities that registered engineers undertake to keep knowledge and skills current, counted toward renewal of their practising certificate with the Professional Engineers Board.

Singapore statute imposing duties on employers, occupiers, principals and workers to ensure safety and health at work, supported by regulations on risk management, incident reporting and specific hazards.

A systematic review that identifies hazards, estimates the likelihood and severity of harm, and records controls needed to reduce risk before work starts.

The preferred order of risk controls: elimination, substitution, engineering controls, administrative controls and finally personal protective equipment; higher levels generally give more reliable protection.

A formal written authorisation for high-risk work such as hot work, confined-space entry or work on energised plant, confirming specified precautions are in place before work begins.

A procedure that isolates all energy sources and fits locks and warning tags so equipment cannot be restarted during maintenance, preventing injury from unexpected energisation or stored energy.

Singapore law regulating building works, submission and approval of plans, supervision, and permits such as TOP and CSC, administered by the Building and Construction Authority.

Singapore law administered by the Singapore Civil Defence Force that requires fire safety measures, fire safety certificates and duties for buildings, supported by the Fire Code.

The Code of Practice for Fire Precautions in Buildings issued by SCDF, prescribing technical requirements for means of escape, smoke control, fire dampers and protection of openings.

Singapore legislation requiring prescribed large energy users and buildings to measure, report and improve energy efficiency, including energy management systems and minimum energy performance standards.

The Building and Construction Industry Security of Payment Act gives parties a statutory right to progress payments and fast adjudication, and limits pay-when-paid clauses in construction contracts.

A standard form widely used for Singapore public works, setting out obligations, payment, variations, extension of time and dispute procedures for construction and engineering contracts.

A formal instruction that changes the scope, quantity, quality or timing of contracted works, with cost and time effects valued under the contract.

An extension of the contractual completion date granted for qualifying delays, so the contractor is not liable for liquidated damages for that period.

A pre-agreed amount payable by the contractor for each day of delay beyond the completion date, representing a genuine estimate of the employer's likely loss.

A permit issued by BCA allowing a completed building to be occupied before statutory completion, granted when essential safety requirements, including fire safety, are satisfied.

Planned verification that installed systems perform to design intent, covering pre-functional checks, functional tests, balancing, controls proving and documented results before handover.

For a refrigeration or heat pump machine, the ratio of useful cooling or heating delivered to energy consumed at stated operating conditions; a higher value indicates better efficiency.

Chiller plant electrical input in kilowatts divided by cooling delivered in refrigeration tons; a lower value means a more efficient plant and is used in Singapore efficiency benchmarks.

Cooling capacity in British thermal units per hour divided by electrical power input in watts for an air-conditioning unit at rated test conditions; higher values indicate better efficiency.

Singapore's green building certification scheme run by BCA, scoring energy efficiency, water efficiency, environmental protection, indoor environment and other sustainability outcomes at levels such as Gold and Platinum.

The number of times the air volume of a space is replaced each hour, used to specify ventilation, dilution of contaminants or pressurisation performance.

An air-conditioning arrangement that varies supply airflow to each zone while holding supply air temperature nearly constant, reducing fan energy when cooling loads fall.

A closure fitted in ductwork where it passes through a fire-rated separation, designed to shut automatically on fire to stop smoke and flame travelling through the ventilation system.

Engineered measures such as stair pressurisation, smoke exhaust or smoke curtains that keep escape routes and firefighting access usable during a fire.

A systematic estimate of sensible and latent heat gains from people, lighting, equipment, solar radiation and conduction, used to size cooling equipment and air distribution.

Relationships stating that for a centrifugal pump, flow changes with speed, head with speed squared and power with speed cubed, explaining large energy savings from variable-speed operation.

A graph of moist-air properties such as dry-bulb temperature, humidity ratio and enthalpy, used to analyse cooling, heating, humidification and mixing processes in air-conditioning design.

A closed container designed to hold gas or liquid at pressure above atmospheric, subject to design codes, inspection and WSH requirements to prevent rupture and injury.

A schematic showing process equipment, piping, valves, instruments and control loops with identifying tags, used for design, operation, hazard review and management of change.

The total cost of an asset over its useful life, including capital, energy, maintenance, replacement and disposal, used to compare design options on a whole-life basis.

A measure of the climate impact of a refrigerant relative to carbon dioxide over a chosen period, guiding selection of low-impact refrigerants and leak control.

Scheduled inspection, servicing and replacement of equipment performed to reduce failure likelihood and keep performance near design, based on manufacturer guidance and operating history.