targeted risk assessment - sculpturebythesea.com · targeted risk assessment © aces group -...

PG 1 of 10TARGETED RISK ASSESSMENT

© ACES Group - Commercial in Confidence

PURPOSE

This Targeted Risk Assessment (TRA) was developed by Avert Risk to address safety risk for the event or activity. The aim is to guide client focus towards key risks and provide support in identifying what is reasonably practicable to be done as required by applicable legislation. The level of complexity of this document shall not be seen as indication that the event or activity poses acceptable risks. Duty holders shall commit attention to this document and ensure they apply the risk controls to effectively reduce risk exposures and impact. Clients shall share this document with other duty holders and interested parties and seek to consult about risk and the listed controls. It is imperative that duty holders implement processes to see that real risk controls are actually applied and function as intended. Persons responsible for the implementation of these controls shall sign the risk register for every control they have personally verified. This is an important assurance process aligned with duty of care obligations of any enterprise. Completed TRA documents shall be kept on file as evidence of events and activities supported by this process. This TRA was prepared in reference with AS/NZS ISO 31000 Risk management - Principles and Guidelines.

PROJECT DETAILS

Client: Sculpture By the Sea Incorporated.

Event/Activity Title: Development of Waverley Council-initiated accessible path/landscape.

Event/Activity Date(s): As per build schedules.

Description of Works:

Development of Council-initiated permanent accessible path and related landscaping and parkland design as per tender drawings file: 'DETAILED Marks Park Plans_C0359-MRKPK-C_LandscapeDrawings_ForTenderSIGNED'.

Location(s): Marks Park - Fletcher Street/Marks Lane/ Kenneth Street, Bondi, Tamarama, NSW 2026.

Key Risk Areas Identified:

Proposed path location exposes wheelchair users to significant wind and gust forces that could cause a wheelchair user to lose control or fall due to gust actions. The path does not appear to allow for soleplates that could stop a wheelchair or other aid from departing the path and falling down a steep hill. Natural user group could include parents with prams - prams highly vulnerable to wind actions.

Scope of Assessment: Public Safety and Work Health & Safety-related risks only.

PREPARED BY

Name: Momtchil ['Momo'] Vassilev.

Role: Risk Assessor [CPRA - RMIA, Diploma in WHS, 14+ years public events].

Company: Avert Risk Management Services (Avert).

Contact: [email protected], 0416 120 848, (02) 9699 7711.

APPROVED BY

Name:

Signature

Date:



RESEARCH AND REFERENCES

Avert made reference to the following publications: Civil Liability Act 2002 NSW, - ISO 31000:2018 ‘Risk Management – Guidelines’, SA/SNZ HB 'Communicating and consulting about risk', SA/SNZ HB 205:2017 ‘Managing health-and-safety-related risk’, HB 89 ‘Risk Management – Guidelines on Risk Assessment Techniques’. Research resources and risk-relevant information: Bre Group, Digest DG520, May 2011, Page 10, Figure 2, B5 ‘Fresh Breeze’ ‘Limit of agreeable wind on land’. Bre Group, Digest DG520, May 2011, Figure 3, Lawson Comfort Criteria and Threshold Wind Speeds: - Roads and car parks, business walking, fast walking from A to B, and People at work, workers around buildings – B5 (29 - 38 km/hr), - Pedestrian strolling, slow walking with occasional stops, shopping, short-term standing e.g. at bus stops – B4 (20 - 28 km/hr), - Long-term sitting – in open-air cafes, parks, etc. for periods of more than about 10 min – B3 (12 - 19 km/hr). Department of Veteran Affairs, USA, Journal of Rehabilitation Research and Development Vol . 27 No . 3, 1990: 'Wheelchair racing sports science: A review', Rory A. Cooper, PhD Department of Electrical and Electronic Engineering, California State University, Sacramento, CA 95819 (figure extract inserted further in this document). Prosthetics and Orthotics International, 1991, 15, 24—37, 'Biomechanics and the wheelchair' C. A. McLaurin and C. E. Brubaker, Rehabilitation Engineering Centre, University of Virginia, USA: 'Biomechanics -...the amount of work required to propel a wheelchair is readily measured and is dependent upon the rolling resistance of the wheelchair, the effect of ramps, side slopes and wind resistance...on a firm level surface the rolling resistance may be as low as 6 newtons (N) or as high as 40 N, depending on tyres and alignment. The wind effect can be considerable. Coe (1979) at NASA Langley studied this in a low speed wind tunnel. With a drag coefficient considerably worse than a flat plate, a wheelchair will require a force of 12 N to overcome a head wind of 20 kmph. Doubling the wind speed would increase the drag force four times'. Online research - prams: UK: https://www.youtube.com/watch?v=qlhymln9nao https://metro.co.uk/2014/08/11/wind-blows-child-in-pram-on-tube-tracks-seconds-before-train-arrives-in-near-fatal-incident-4828820/ UK: https://www.mirror.co.uk/news/uk-news/storm-erik-sweeps-pram-pavement-13974293 UK: https://www.theguardian.com/uk/2013/jan/28/baby-blown-freezing-sea-rescuers UK: https://www.dailymail.co.uk/news/article-2952673/Six-month-old-baby-blown-middle-river-freak-gust-wind-pushed-pram-grandmother.html Ukraine: https://www.bbc.com/news/world-europe-47536987

CONSULTATION

Avert consulted with Mr. Philip Wadds - Site Manager (Sculpture by the Sea) via telephone calls, e-mail and during a site inspection at Marks Park on Wednesday, 26.6.2019, between 13:00 and 13:50 hrs. Avert scoped this assessment to the topographical adequacy of the proposed path in the context of the park and its potential effect on 'Sculpture by the Sea'. Avert received a brief of the proposed development as well as file 'DETAILED Marks Park Plans_C0359-MRKPK-C_LandscapeDrawings_ForTenderSIGNED' for reference. Mr. Wadds indicated that during the 'Sculpture by the Sea' event, the average wind speeds at the area of the proposed path are 50km/h, but gust have reached 100km/h. The site inspection (see imaged included further in this document) suggested that the eastern section of the proposed path is topographically located at the natural apex of a small hill, which is naturally exposed to high speed winds and gusts. Mr. Wadds also indicated that during the 'Sculpture by the Sea' event, a total of 500,000+ people pass Marks Park as part of the event track, suggesting high volume pedestrian thoroughfare (approximately 29,500 persons daily assuming equal distribution). Avert scored the Inherent Risks on the theoretical presumption of no existing controls. Residual Risk ratings are analysed on the assumption that all risk controls in the risk register are applied and monitored. Avert adjusted the risk matrix to account for high public safety expectations.



CONSEQUENCE - Consequence table used for this Risk Assessment

Severity Health and Safety Example

5One or more fatalities or permanent disability/ill health to one or more persons

Electrocution, explosion, fire, permanent loss of vision, hearing or mobility

4

Serious Injury or Illness requiring immediate hospital admission via ambulance (in-patient)

Serious head injury, eye injury, burns, laceration, loss ofconsciousness, infection, amputation or spinal injury

3Moderate Injury or Illness requiring hospitalisation via ambulance (out -patient)

Fractures, minor head injuries i.e. concussion, minor burns, dislocation

2Minor Injury or temporary ill health requiring treatment by medical practitioner

Sprains, strains, musculoskeletal disorders and food poisoning

1 First aid treatment on site Minor cuts, ice or band aids

LIKELIHOOD - Likelihood table used for this Risk Assessment

A Almost Certain The risk will occur

B Likely The risk will probably occur

C Possible The risk might occur

D Unlikely The risk is not expected to occur

E Rare The risk is not known to occur in most circumstances

RISK MATRIX - Risk level scoring table used for this Risk Assessment

Likelihood Consequence

1 2 3 4 5

A Medium High High Very High Very High

B Medium Medium High High Very High

C Low Medium High High High

D Low Low Medium Medium High

E Very Low Low Medium Medium High

HIERARCHY OF CONTROL

Where it is not reasonably practicable for the risk to be eliminated, you must minimise risks so far as is reasonably practicable by using the ‘hierarchy of control’. The hierarchy provides for a series of general control measures to be implemented in a step-wise way. A combination of these control measures may be used if a single control is insufficient in minimising the risk.



#Hazard /

Risk SourceRisk Likelihood Consequence Inherent Risk Risk Controls Residual

Risk Risk Owner

Sign Off

1

Wheelchair path planned to be at the apex of a natural 'wind break' hill.

Wheelchair user or person using an aid such as crouches caught by a gust (not bracing in expectation of a gust) and tipped over, resulting in an injury.

Possible - The risk might occur

C


4

C4 - High

C4 1. Design the path following the natural - nearly level - terrain of Marks Park west from the wind-breaker hill. The northern section of the proposed wheelchair path would allow suitable ocean view for wheelchair users without the exposure to wind-related risks, 2. Directional signage to point the path and platform to the North of the park as the ocean viewing locations. Other sections of the path to be 'transit' sections making use of the wind cover provided by the natural hill discussed, 3. Engage in broad community consultation and seek input from persons using wheelchairs and other aids, 4. Consider having lighting plan as part of the Marks Park development - discrete flood lights that meet established standards and criteria for public spaces.

E2 - Low

E2

Waverley Council.

2

Wheelchair path planned to be at the apex of a natural 'wind break' hill. No clear indication of a wheelchair path toe-board or handrail.

Wheelchair user caught by a gust and pushed East or West and down a steep hill of approximately 30° (West) or 40° (East) causing the person to fall and suffer injury.

Likely - The risk will probably occur

B


4

B4 - High

B4 1. Path to be designed following the natural - nearly level - terrain of Marks Park west from the wind-breaker hill. The northern section of the proposed wheelchair path would allow suitable ocean view for wheelchair users without the exposure to wind-related risks, 2. Directional signage to point the path and platform to the North of the park as the ocean viewing platform. Other sections of the path to be 'transit' sections making use of the wind cover provided by the natural hill discussed, 3. Engage in broad community consultation and seek input from persons using wheelchairs and other aids, 4. Consider having lighting plan as part of the Marks Park development - discrete flood lights that meet established standards and criteria for public spaces, 5. If redesign recommendations included above are rejected by Council - consider having guardrail along critical sections of the proposed path that would arrest a device on wheels and prevent the user from falling down the steep hill towards the ocean.

E2 - Low

E2

Waverley Council.

3

Accessible path attracting a different user group - parents with prams, with exposure to high speed winds and gusts.

Baby pram pushed East or West and down a steep hill of approximately 30° (West) or 40° (East) causing the person to fall and suffer injury.


B


4

B4 - High

B4 1. Path to be designed following the natural - nearly level - terrain of Marks Park west from the wind-breaker hill. The northern section of the proposed wheelchair path would allow suitable ocean view for wheelchair users without the exposure to wind-related risks, 2. Directional signage to point the path and platform to the North of the park as the ocean viewing platform. Other sections of the path to be 'transit' sections making use of the wind cover provided by the natural hill discussed, 3. Engage in broad community consultation and seek input from persons using wheelchairs and other aids, 4. Consider having lighting plan as part of the Marks Park development - discrete flood lights that meet established standards and criteria for public spaces, 5. Consider having guardrail along critical sections of the proposed path that would arrest a device on wheels and prevent the user from falling down the steep hill towards the ocean.

E2 - Low

E2

Waverley Council.



#Hazard /

Risk SourceRisk Likelihood Consequence Inherent Risk Risk Controls Residual

Risk Risk Owner

Sign Off

4

Marks Park high volume crowds during 'Sculpture by the sea' event.

Wheelchair user or parent with pram, distracted by the event exhibits, losing control and causing an injury to public enjoying the event.


B

Moderate Injury or Illness requiring hospitalisation via ambulance (out -patient)

3

B3 - High

B3 1. Path to be designed following the natural - nearly level - terrain of Marks Park west from the wind-breaker hill. The northern section of the proposed wheelchair path would allow suitable ocean view for wheelchair users without the exposure to wind-related risks - given that appropriate guardrail or toe board design is included, 2. Directional signage to point the path and platform to the North of the park as the ocean viewing platform, thus separating a static non-'Sculpture by the Sea' park user from the moving event crowd (ambulatory), 3. Consider having lighting plan as part of the Marks Park development - discrete flood lights that meet established standards and criteria for public spaces, 5. Consider having guardrail along critical sections of the proposed path that would arrest a device on wheels and prevent the user from falling down the steep hill towards the ocean.

E2 - Low

E2

Waverley Council.



Risk Implementation Process

targeted risk assessment - sculpturebythesea.com · targeted risk assessment © aces group -...

Documents