(a) In relation to automatic fire detection & alarm systems, outline the basic principles of operation of
(i) Heat detectors (4)
(ii) Smoke detectors (4)
(b) Identify the circumstances in which EACH type of detector would be inappropriate (2)
NEBOSH INTERNATIONAL DIPLOMA EXAM QUESTIONS NO :23
(a) Identify the different types of equipment that can be used in the measurement of noise in the workplace & comment on their respective features & roles in assessing worker exposure to noise (12)
(b) Review the benefits & limitations of audiometry as part of a hearing conservation programme (8)
NEBOSH INTERNATIONAL DIPLOMA EXAM QUESTIONS NO :22
In relation to RPE
(i) Explain the meaning of apf (4)
(ii) Calculate the minimum apf value for RPE required to provide protection against an airborne contaminant that has a concentration in the air of 15mg/m3 & an exposure standard of 0.1 mg/m3 (2)
(iii) Explain why levels of exposure to an airborne contaminant may be higher in practice then those theoretically obtained by the application of an “apf” (14)
H&S Lead Engineer (HSE Chief ) responsibility
The assigned H&S Lead Engineer has the following responsibilities:
- Provide H&S Administrative support for the H&S Manager,
- Deputies for H&S Manager in his absence,
- Assist in the development and update of plans, procedures, work instructions etc.
- Assist in the tracking of action items,
- Develop core H&S Strategies, Procedures, Instructions etc.
- Prepare the Project H&S Plans and Procedures,
- Effectively manage the safety personnel under his control and provide appropriate direction and training as required optimizing their effectiveness on site,
- To establish an inspection scheme and schedule that involves all levels of site supervision, office personnel and other exposed to the define stage of the project,
- Implement a training program that addresses the requirements of GHSER established for the project along with site specific skill training,
- Establish a safety committee representing the various trades. The Committee will meet periodically, to discuss safety issues and make recommendations. The Committee will be involved in site safety inspections,
- Review the results of inspections of the site to identify safety issues and deficiencies, and to advise Supervisors of findings,
- Co-ordinate the investigation of any incident (DAFWC, near miss, property damage etc. as necessary),
- Identify any trends relevant to incident investigations that become apparent and to ensure that remedial actions have been agreed and corrective action performed and recorded,
- Lead Task Safety Awareness (TSA) reviews where appropriate,
- To liaise with the Site Engineering and Construction Supervision to ensure that he is involved and kept informed of all site activities, including work method statements and risk assessments (TSA) where applicable,
- Create and implement any procedures that are required,
- Monitor the performance of the H&S programme and initiatives introduced throughout the project,
- Drive and support the ‘Step Change’ necessary to achieve a ‘World Class’ safety performance.
Type Of Ladders
1. Ladder – An appliance usually consisting of two side rails joined at regular intervals by cross pieces called steps, rungs, or cleats, on which a person may step when ascending or descending.
2. Stepladder – A self-supporting portable ladder, nonadjustable in length, having flat steps and a hinged back. Its size is designated by the overall length of the ladder measured along the front edge of the side rails.
a. Type I – Industrial stepladders, 3 to 20 feet for heavy duty, such as utilities, contractors, and industrial use.
b. Type II – Commercial stepladder, 3 to 12 feet for medium duty, such as painters, contractors, and light duty use.
c. Type III – Household stepladders, 3 to 6 feet for light duty, such as light household use.
3. Extension ladder – A non self-supporting portable ladder adjustable in length. It consists of two or more sections traveling in guides or brackets so arranged to permit length adjustment. Its size is designated by the sum of the lengths of sections measured along the side rails.
4. Sectional ladder – A self-supporting ladder, non adjustable in length, consisting of two or more sections of ladder constructed so that the sections may be combined to function as a single ladder. Its size is designated by the overall length of the assembled sections.
5. Single ladder – A non self-supporting portable ladder, non adjustable in length, consisting of one section. Its size is designated by the overall length of the side rails.
6. Side-rolling ladder – A semi-fixed ladder, non adjustable in length, supported to attachments by a guide rail that is generally fastened to shelving, the plane of the ladder also being its plane of motion.
7. Special purpose ladder – A portable ladder that represents either a modification or a combination of design or construction features in one of the general purpose types of ladders previously defined in order to adapt the ladder to special or specific uses.
8. Trestle ladder – A self-supporting portable ladder, non adjustable in length, consisting of two sections hinged at the top to form equal angles at the base. The size is designated by the length of the side rails measured along the front edge.
9. Extension trestle ladder – A self-supporting portable ladder, adjustable in length, consisting of a trestle ladder base and a vertically adjustable single ladder, with suitable means for locking the ladders together. The size is designated by the trestle ladder base.
10. Trolley ladder – A semi fixed ladder, non adjustable in length, supported by attachments to a track, the plane of the ladder being at right angles to the plane of motion.
11. Rungs – Ladder cross-pieces of circular or oval cross sections on which a person may step when ascending or descending.
12. Steps – The flat cross pieces of a ladder on which a person may step when ascending or descending.
