PRACTICE of Professional Engineering Examination, Study notes of Engineering

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PRACTICE of Professional Engineering Examination 2015   Information for Applicants Professional Engineers Registration Examination professional engineers board Singapore 5 Maxwell Road 1st storey Tower Block MND Complex Singapore 069110 Page 1 Professional Engineers Registration Examination PPE 2015 Professional Engineers Registration Examination Practice of Professional Engineering Examination 2015 Information for Applicants Contents Page 1 Introduction ....................................................................................... 2 2 Description of Examination .................................................................. 2 3 Eligibility to Sit for Examination ............................................................ 2 4 Fees .................................................................................................. 3 5 Date of Examination ............................................................................ 3 6 Venue ................................................................................................ 3 7 Application ......................................................................................... 3 8 Structure of Examination ..................................................................... 3 9 Passing Requirements Final Results and Notification .............................. 4 10 Examination Appeals ………………………………………………………………….……..4 11 Review Courses …………………………………………………..………..4 12 Refund of Fees ……………………………………………………….…...5 Annex A: FORMAT, SYLLABUS AND SAMPLE QUESTIONS I Practice of Professional Engineering Examination - Part 1 (Common)…………. 6 II Practice of Professional Engineering Examination - Part 2 (Civil) .....................9 III Practice of Professional Engineering Examination - Part 2 (Electrical) .......... 20 IV Practice of Professional Engineering Examination - Part 2 (Mechanical) ....... 31 Page 4 Professional Engineers Registration Examination PPE 2015 PPE Part 2 Civil/mechanical/electrical engineering 4 hrs 10 mins (1.00 pm – 5.10 pm)  Answer 1 compulsory question plus 4 out of 7 questions 9 PASSING REQUIREMENTS, FINAL RESULTS AND NOTIFICATION (a) A candidate is required to take both Parts 1 and 2 when he sits for the examination unless he qualifies for an exemption as described in (b) below. Examination results will be given to candidates on a Pass/Fail basis and no scores or marks will be given to candidates. To obtain a ‘Pass’ in the examination, a candidate is required to obtain a pass score in both Parts 1 and 2 respectively. (b) A candidate who has taken both parts when he sits for the examination and obtains a pass score in only one of the two parts is deemed to have failed the examination. However, if he sits for the examination again, he would be granted an exemption from the part for which he has obtained a pass score. This exemption shall be granted provided the candidate sits for the examination again within a 3-year period from the date of result. With the exemption, he would only need to take the part of the examination for which he did not obtain a pass score. No exemption shall be granted if he sits for the examination again after the exemption period, in which case he is required to take both Parts 1 and 2. (c) Examination results will be mailed to the candidates within twelve weeks after the examination. 10 EXAMINATION APPEALS A candidate who has failed the examination may submit a written appeal to review his/her performance together with a payment of $25. The appeal is to be made within 2 weeks after the receipt of results and late appeals would not be considered. The result of the appeal/review will be sent by written mail to the appeal candidate. The appeal candidate would not be able to review his examination paper. 11 REVIEW COURSES The Board does not endorse any review course or material provided as study aids. 12 REFUND OF FEES Page 5 Professional Engineers Registration Examination PPE 2015 Where an applicant who has been accepted is unable to sit for the examination subsequently, the Board may, at its discretion, refund $150 to the applicant if the applicant informs the Board at least a week before the examination or submit a medical certificate by mail within 2 weeks after the examination. There will be no refund if the applicant informs the Board less than a week before the examination or send scanned copy of medical certificate via email. Page 6 Professional Registration Examination PPE 2015 Annex A: FORMAT, SYLLABUS AND SAMPLE QUESTIONS I Practice of Professional Engineering Examination Part 1 (Common) Professional conduct and ethics are important areas because most of the disciplinary actions taken by the Professional Engineers Board are in the area of ethics and not technical matters. Professionalism and ethics are closely related and inseparably bound as professional status and recognition are based on public interest. A professional engineer’s judgment and decisions can have great impact on public health and safety. He is expected to uphold the dignity, standing and reputation of the profession. He shall practise ethically in relation to his clients, employers, fellow professionals and the public at large. Format This is a common paper which has two sections on the Professional Engineers Act and Professional Conduct and Ethics. The paper comprises 10 multiple choice questions (MCQs) and 5 essay type questions based on hypothetical case studies. The candidates must answer all the 10 compulsory MCQs (25 marks) and can choose to answer any 3 out of the 5 essay questions (75 marks) during the 2 hrs 10 mins examination period. Syllabus The paper will focus on the latest revisions of the following Professional Engineers Act and Rules: - Professional Engineers Act - Professional Engineers (Code of Professional Conduct and Ethics) Rules - Professional Engineers Rules References will also be made to past disciplinary actions taken by the Professional Engineers Board arising from complaints against professional engineers. Questions will be set to test the candidates’ understanding and interpretation of the provisions in the act and rules as well as how they will tackle hypothetical cases involving the clients, the employers, fellow professionals and the public at large. Page 9 Professional Engineers Registration Examination PPE 2015 II Practice of Professional Engineering Examination Part 2 (Civil) The paper aims to examine the candidates on their proficiency in the practice of civil/structural engineering at a professional level. Candidates are expected to have a good working knowledge and experience of civil/structural engineering design and practices in Singapore. In particular knowledge is required in the areas of regulatory framework, submission and approval procedures, statutory acts and regulations, practices guidelines and codes of practice. The examination will place emphasis on the Professional Engineer’s role in building projects in the local context either acting as the Qualified Person for the project or Professional Engineer for the civil and structural engineering works. Format This is a 4 hrs 10 mins paper and a candidate is required to answer 1 compulsory question covering the design of concrete and steel structures and choose 4 out of 7 questions covering areas of design, codes of practice, acts and regulations, submission/approval procedures & site supervision. The candidates may bring along their own reference materials and calculators as necessary. Syllabus The list of reference literature, codes, acts, regulations, etc appended below is meant as a guide and is not exhaustive.  Acts and Regulations  Professional Engineers Act and Regulations  Building Control Act and Regulations  Publications  URA - Planning Control Handbooks and Guidelines for Building Works  SCDF - Code of Practice for Fire Precautions in Buildings - Handbook on Fire Precautions in Buildings - FSSD Fire Safety Handbooks  LTA - Guidelines & Publications on Rapid Transit Systems Page 10 Professional Registration Examination PPE 2015 - Building Works & Restricted Activities in Railway Protection Zone - Street Proposals - Vehicle Parking - Other Guidelines and Standards  NEA - Code of Practice on Environmental Health - Code of Practice on Pollution Control  PUB - Code of Practice on Surface Water Drainage - Standard Specifications for Drainage Works - Code of Practice on Sewerage and Sanitary Works - Sewerage and Drainage Standard Drawings  NParks - Procedures and Guidelines for Plan Submissions  MOM - Workplace Safety & Health Act and Subsidiary Legislations  BCA - National Productivity and Quality Specification (NPQS) - Guidelines and Handbooks on Civil Defence Shelters - Code of Practice on Buildable Design  Civil Engineering Codes/Standards - Codes and Standards under Building Control Act and Regulations - Codes and Standards for Roads and Transit Systems to LTA's Requirements Page 11 Professional Registration Examination PPE 2015 Sample Questions From Past Year Papers for Practice of Professional Engineering Examination Part 2 (Civil) Section 1- Question 1 is COMPULSORY Page 14 Question 1 (Continued) (hig Professional Registration Examination PPE 2015  Page 15 Professional Registration Examination PPE 2015 Section 2 - Answer 4 Out Of 7 Questions Page 16 Question 5 (Continued) ia age eaaaae BEE po ee dai || Geological Cross Section along [P2: now aay 40 Ss CES] e: Peatvoncanc cy E30) E213 — nevnenta seve | wr s ws Wann AY He Gis - tte Svan we np nd may wy cet tone Sodan vetica seve | 1380 Fig 5-1 Professional Registration Examination PPE 2015 Page 19 Question 6 (Continued) AND TS LIABLE Scale E ENVIRONMENT AND WATER RESOURCES i OF ANY ERROR OR OMISSION, 1: 1500 mined and verified on site before Fig 6-1 ( Continued) Professional Registration Examination PPE 2015  Page 20 Professional Registration Examination PPE 2015 III Practice of Professional Engineering Examination Part 2 (Electrical) The paper aims to examine the candidates on their proficiency in the practice of electrical engineering at a professional level. Candidates are expected to have a good working knowledge and experience of electrical engineering design and practices in Singapore. In particular knowledge is required in the areas of regulatory framework, submission and approval procedures, statutory acts and regulations, practices guidelines and codes of practice. The examination will place emphasis on the Professional Engineer’s role in building projects in the local context in relation to electrical engineering works. Format This is a 4 hrs 10 mins paper that examines candidates on technical competency and understanding of standards and codes that are applicable in Singapore for the discipline of electrical engineering. The paper consists of 2 Sections and 8 questions. Candidates must answer questions in both sections (Section 1 and Section 2). Section 1 consists of a compulsory question on CP 5, statutory acts and regulations. Candidate is required to answer this compulsory question. Section 2 consists of 7 questions. Candidates shall choose to answer 4 out of 7 questions. Syllabus  Codes of Practice  CP 5: Code of Practice for Electrical Installations  CP 10: Installation and Servicing of Electrical Fire Alarm System  CP 15: Installation, Operation and Maintenance of Escalators  CP 39: Installation of MATV for the reception of VHF and UHF Sound and TV  CP 88 - 1 : Code of practice for temporary electrical installations - Construction and building sites  CP 88 - 2 : Code of practice for temporary electrical installations - Festive lighting, trade-fairs, mini-fairs and exhibition sites  CP 88 - 3 : Code of practice for temporary electrical installations - Shipbuilding and ship-repairing yards Page 21 Professional Registration Examination PPE 2015  SS 209: Battery operated emergency power supply for lighting, ventilation and alarm bell of lifts  SS 530: Code of practice for energy efficiency standard for building services and equipment.  SS531-1: Code of practice for lighting of work places – Indoor.  SS531-2: Code of practice for lighting of work places – Outdoor.  SS531-3: Code of practice for lighting of work places - Lighting requirements for safety and security of outdoor work places.  SS532: Code of practice for the Storage of Flammable Liquids.  SS535: Installation, Operation, Maintenance, Performance and Construction Requirements of Mains Failure and Standby Generating System.  SS538: Code of practice for maintenance of electrical equipment of electrical installations.  SS546: Emergency voice communication system in building.  SS 550: Installation, Operation and Maintenance of Electric Passengers and Goods Lifts.  SS 551: Code of Practice for Earthing.  SS 555-1 : Code of practice for protection against lightning – General requirement.  SS 555-2 : Code of practice for protection against lightning – Risk management.  SS 555-3 : Code of practice for protection against lightning – Physical damage to structures and life hazard.  SS 555-4 : Code of practice for protection against lightning – Electrical and electronic systems within structures.  SS 558: Code of practice for construction, installation, operation and maintenance of intruder alarm systems.  SS 563-1: Code of practice for the design, installation and maintenance of emergency lighting and power supply systems in buildings. Part 1 : Emergency lighting.  SS 563-2: Code of practice for the design, installation and maintenance of emergency lighting and power supply systems in Page 24 Professional Registration Examination PPE 2015  Method of installation  Sizing of conduit and trunking  Factors affecting the current carrying capacity of cables  Sizing of cables and busways for use under different types of conditions  Connected load, maximum demands and circuit breakers ratings for a electrical distribution board  Earthing  Purpose of earthing  Methods of earthing  Earth fault loop impedance and earth fault current  Suitable sizes of circuit protective conductor  Testing of earthing  Lightning Protection Systems  Rolling sphere technique of determining zones of protection  Spacing of air terminations and types of air termination  Down conductors for building below 45 metres and those exceeding 45 metres  Earth electrodes, earth resistance values and hazards of a rise in ground potential caused by lightning strike  Selection of appropriate materials and installation methods  Prevention of side flashing  Design requirement of complete lightning protection system  Transients and surge suppression  Effect of lightning on system and structure  Source and type of damages due to lightning Page 25 Professional Registration Examination PPE 2015  Risk assessment aspect in lightning protection  Emergency Lighting  Exit and emergency lighting requirements for evacuation of occupants  Types of back-up power supplies  Exit and directional Signs  Standby Power Generator System  Types of essential and critical loads  Sizing of generator with considerations for maximum demand of essential load, transient or motor starting loads and voltage dip  Voltage regulation and its effects on generator sizing  Protection for alternator and prime mover  Installation of standby generator system including day-tank, battery and charger, fuel supply, engine cooling system, plant room ventilation, exhaust and fresh air intake, control and instrumentation panel and automatic transfer switch.  Underground fuel storage system  Grounding/Earthing arrangement  Maintenance  Automatic Fire Alarm System  Requirement for automatic and manual fire detection system and purpose of compartmentation as required by the Fire Code  Interaction with other building services such as emergency voice communication system, lifts, AHUs, pressurization fans and auto- doors during alarm activation  Emergency Voice Communication System  Requirements for public address system for building above 24 metres but less than 60 metres  Requirements for emergency voice communication for building above 60 metres Page 26 Professional Registration Examination PPE 2015  Requirements for fireman intercom  Inspection, Testing and Common Violation In Electrical Installation  Mandatory requirements for inspection and testing of electrical installation prior to energisation of electrical supply  Types of test instruments and standard methods of testing Page 29 Professional Registration Examination PPE 2015 Section 2 – Answer 4 Out Of 7 Questions (each at 18 marks) Q2. 2(a) You are asked to design an installation where electronic system will be installed and required to comply with electromagnetic compatibility (EMC) requirement. Identify the three criteria for your design? 2(b) Figure Q2(b) shows the basic decomposition of a typical EMC coupling problem where EMC is concerned with the generation, transmission and reception of electromagnetic energy. What are the three ways to prevent unintended interference? Figure Q2(b) 2(c) A vertical electrical riser housed inside an office/commercial complex is radiating electromagnetic field (EMF) as measured and indicated in Figure Q2(c). Explain how to remove or reduce the radiated EMF and to protect the occupants from this exposure? Figure Q2(c) 2(d) (i) State the main purpose of the lightning protection system. Source (emitter) Transfer (coupling path) Receptor (receiver) Page 30 Professional Registration Examination PPE 2015 (ii) Explain how the main purpose stated in above (i) can be achieved. (iii) Explain how to reduce the dangerous side-flashes for a building? Q3. 3(a) Before work can commence on a high voltage switchboard, what are the 5 essential steps that need to be carried out to ensure the safety of the workers? Assume that you can only shut down half of the switchboard. 3(b) With the aid of a diagram, describe the protection requirements of the incoming panel of a 22 kV supply. You should include the type, rating and accuracy class of various devices where appropriate. 3(c) A 22kV/400V 2-MVA transformer is connected directly to the “incoming mains” air circuit breaker of a LV switchboard. The 22 kV cable is protected by an IDMTL overcurrent relay R1 which is connected to 100/5A current transformers. R1 is set at 50% plug setting and time multiplier at 0.3. The protection on the LV side is an IDMTL overcurrent relay R2 which is connected to 3000/5A current transformers. Both the relays R1 and R2 have the same time-current characteristic which is given by: t = 0.14/(M0.02 -1) secs ( for Time Multiplier = 1 ) where M = Plug Setting Multiplier The symmetrical fault current at the 400-V switchboard is 36,000 A. Determine a suitable plug setting and a suitable time multiplier for relay R2 if the time discrimination between the two relays R1 and R2 is 0.4 secs. Available plug settings for the two IDMTL relays are 50%, 75%, 100%,125%,150%,175% and 200%. Assume the LV circuit breaker does not have direct-acting element. Page 31 Professional Registration Examination PPE 2015 IV Practice of Professional Engineering Examination Part 2 (Mechanical) The paper aims to examine the candidates on their proficiency in the practice of mechanical engineering at a professional level. Candidates are expected to have a good working knowledge and experience of mechanical engineering design and practices in Singapore. In particular knowledge is required in the areas of regulatory framework, submission and approval procedures, statutory acts and regulations, practices guidelines and codes of practice. The examination will place emphasis on the Professional Engineer’s role in building projects in the local context in relation to mechanical engineering works. Format This is a 4-hour paper that examines candidates on technical competency and understanding of the use and application of standards and codes that are applicable to the practice of mechanical engineering at a professional level in Singapore. The paper consists of 2 Sections comprising a total of 8 questions. Candidates are required to answer questions in both sections (Section 1 and Section 2). Section 1 will consist of a compulsory question on principles, codes, and legislation related to general mechanical engineering practice, safety and environmental protection. Section 2 will consist of a total of 7 optional questions. Candidates may choose to answer any 4 out of the 7 questions. Syllabus The scope of professional engineering work covered by Professional Engineers (Mechanical) may include the following fields: -  Piped Services Cold and Hot Water Services; Sanitary Plumbing Systems within buildings; Town Gas Incoming Supply and Distribution; Liquefied Petroleum Gas (LPG) Multi-Cylinder Systems; Swimming Pool Filtration System  Air Conditioning & Mechanical Ventilation Indoor Air Quality Comfort / Environmental Control / Fire Safety Requirements  Fire Safety in Buildings Wet and Dry Rising mains/Hydrant Systems; Fire Hose reel System; Automatic Fire Sprinkler System; Fire Detection and Alarm System; Gas Flooding System Page 34 Professional Registration Examination PPE 2015 Sample Questions From Past Year Papers for Practice of Professional Engineering Examination Part 2 (Mechanical) Section 1 - Compulsory Question 1 (All TEN parts in Q1 carry equal marks) 1.1 (a) When is pressurization required for staircases? What are the performance criteria that must be achieved in pressurization? (b) For duct penetrations, when are fire dampers not permitted? (c) Describe how you should design a mechanical ventilation system for a smoke free lobby. 1.2 (a) Where passenger lifts are installed in a building with manual or automatic fire alarm system as required in the code, describe how the lifts should function when the fire alarm is activated. (b) Also describe how the lifts should function in the event of normal power failure or interruption. (c) In a building without standby generator what should you provide for the safe operation of the passenger lifts in the event of main power failure or interruption? 1.3 Town gas is to be provided for food and beverage outlets in a new commercial building development. (a) What are the requirements if the gas piping is to be routed through a naturally ventilated basement car park? (b) Describe the interlocking system to be provided if the kitchen of a food and beverage outlet is not naturally ventilated and is located in the basement. (c) What are the requirements if the gas piping is routed within the false ceiling of an air conditioned corridor which is 30 m long at storey 1? 1.4 (a) What is hot-tapping as practiced in process plant operation? (b) Under what considerations can hot tapping technique be used? Page 35 Professional Registration Examination PPE 2015 1.5 Discuss the purpose of pressure testing? Write short notes on the following pressure testing methods: (a) Leak testing; (b) Pneumatic testing; and (c) Proof testing. 1.6 (a) Explain the meaning of “design point” in the design of an Ordinary Hazard sprinkler system. (b) A circular duct is located more than 150 mm from the wall. What is the maximum width this can be before a sprinkler must be installed underneath it? (c) What is the maximum distance below a non-combustible ceiling that a sprinkler may be installed? 1.7 (a) State the density of discharge (mm/min) for OHII design. (b) Explain briefly the operation of a pre-action sprinkler system. 1.8 In air-conditioning cooling load calculations for the purpose of sizing systems, what are the indoor and outdoor design conditions to be used? Support your answers with recommendations from the relevant code of practice. 1.9 In designing an air-conditioning system to handle out-gassing from furnishings and other works what provisions must be made to the system? 1.10 (a) What is the definition of “Factor of Safety” as associated with the use of steel wire ropes for hoisting? (b) What are the respective minimum Factor of Safety for stationary and running wire ropes used for winches and cranes? (28 marks ) Page 36 Professional Registration Examination PPE 2015 Section 2 – Answer 4 Out 7 Questions Question 2 (a) What are the primary objectives in maintaining swimming pool water in a safe and pleasant condition? (b) Calculate the minimum volume of a storage sump (m³) and the pump flow rate in l/s for a pumped drainage system with a catchment area of 800m². You may use the data in Table 1 below. Table 1 Duration (hrs) 3 4 5 6 12 24 Total Rainfall (mm) 151.4 210.6 253.4 281.9 376.7 533.2 (18 marks) Question 4 (a) What are the differences between a winch and a hoist? (b) Under what conditions can you use a winch for lifting? (c) You have to pull a load of 6,000kg. The load is not and cannot be mounted on wheels. The only winch you have at hand is one rated at 5,000kg. Suggest a method that you may use to effect the pull. (18 marks)