Planning Act 2008 The Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 The Port Talbot Steelworks (Power Generation Enhancement) Order DPD1.01 Design Principles Document PINS Reference EN010062 Document No. DPD1.01 Author GVA Revision Date Description 0 April 2015 Submission Version
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Design Principles Document (FINAL) 220415 · 2016-06-30 · The Port Talbot Steelworks (Power Generation Enhancement) Order Design Principles Document DPD1.01 April 2015 3 2.0 Context
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Planning Act 2008 The Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009
The Port Talbot Steelworks (Power Generation Enhancement) Order
DPD1.01 Design Principles Document
PINS Reference EN010062
Document No. DPD1.01
Author GVA
Revision Date Description
0 April 2015 Submission Version
The Port Talbot Steelworks (Power Generation Enhancement) Order Design Principles Document DPD1.01
This standard specifies the requirements for limiting noise from all plant and equipmentsupplied to CSP UK Limited and is additional to any requirements under the Supply ofMachinery (Safety) Regulations 1992. The requirements of this standard are mandatory unless dispensation is given by theEngineering Director CSPUK.Where plant or equipment to be supplied cannot meet the noise requirements of the purchaser,the cost of noise control measures to ensure compliance with the agreed specification shall beprovided.
2 RESPONSIBILITIES
It is the responsibility of the purchaser to ensure that wherever manufacturers information issupplied under different terms or conditions that these are not accepted and the requirementsof this standard are contractual.
3 WORKPLACE NOISE
Plant or equipment installed on site should not increase existing noise levels and where there isan impulsive, tonal or intermittent noise component an additional 5 dB penalty below existingconditions shall be imposed. Particular care is required when equipment is to be installed inareas where noise levels are just below Corus' hearing protection limit of 85 dB(A), to ensurethat the final conditions are still below 85 dB(A).Plant or equipment supplied should normally be less than 85 dB(A) at 1 meter under normaloperating conditions to control workplace noise and help reduce personal noise exposures.Where significant tonal and/or impulsive elements are present a 5 dB penalty is appliedresulting in a requirement of 80 dB(A) at 1 meter. However it is recognised that many situationswill require a lower limit than this, particularly for the control of noise affecting localcommunities, see 6 below, in which case the maximum acceptable noise level will be specifiedby the purchaser at the enquiry stage. In some circumstances a higher noise level may be agreed where strict adherence to the 85dB(A) limit is unnecessary or where excessive costs would be incurred to little benefit in plantnoise levels or to personal noise exposures. An example of this could be the installation of anemergency standby diesel unit in an open or unmanned area.The adoption of noise levels higher than 85 dB(A) at 1 meter as the contractual limit must beagreed in writing with the CSP UK Health & Safety and Environmental departments, stating theacceptable noise level at 1m, prior to the order being raised.Where equipment is normally used in multiple units the stipulated noise level will be with thenormal number of machines in use.
4 AUDIBLE WARNING SIGNALS Alarm sirens, klaxons, fire alarms etc. are not covered by this standard. Specialist assessmentand selection is required when purchasing this type of equipment to ensure that alarms arecorrectly specified and are neither too loud nor too quiet for the situation.Guidance on selection of audible warning signals can be found in Corus P&PD 117 and inBritish & European standards
5 TANNOY SYSTEMSCare should be used when specifying tannoy systems to avoid systems which are either tooquiet or too loud for the area in question. Systems which are over loud for an area can increasepersonal noise exposures significantly.
Where tannoy systems are to sound outside of buildings or structures care must be taken toprevent community noise nuisance at night from site messages. Where high volumes arerequired for safety reasons, restriction in the use of the external systems at night to emergencyor essential messages only will need to be considered.
Plant or equipment installed on site should not increase noise levels beyond the site boundaryand where there is an impulsive, tonal or intermittent noise component an additional 5 dBpenalty below existing conditions shall be imposed.Noise during demolition, construction, and commissioning stages shall be controlled so as notto give rise to complaints. In situations where the generation of noise in the community isunavoidable and likely to give rise to complaints then this must be highlighted during the tenderstage to allow possible alternatives to be examined. Where alternatives are not practicable,time will be required to allow consultation with the regulating agencies and liaison with the localauthorities.Particular care is required when noise will be generated over weekends or at night.Plants authorised under IPPC legislation will require an environmental impact assessment forany equipment that could affect noise levels in the local communities around the site. Thisshould identify all the significant sources of noise associated with the equipment, the noisecontrol or reduction methods available and the BAT requirement for the installation. Particular attention should be given to non routine and emergency situations if there is thepotential for significant noise generation.
7 PLANT & EQUIPMENT NOISE DATA SHEET
The supplier will provide a data sheet listing all the sources of noise from the plant or equipmentand the associated A-weighted sound power levels (A-weighted sound pressure levels atspecified positions and/or octave band levels may also be necessary) that are guaranteed bythe supplier. Where projects involve numerous sources, as in a typical new plant installation, a site layoutidentifying the location of all the sources of noise will also be required.
8 USE OF MODELLING TECHNIQUES
The use of sophisticated noise modelling programmes can be used to demonstrate at tenderstage that equipment will meet the standard. However the sound power and spectrum of thesource(s) used in the programme must be those of the equipment under site operating and notmanufacturers test conditions. Measurements on similar equipment operating in other areascan be made to determine the sound power levels to be used in the model. Where modellingresults have been used to compare equipment and predict final noise levels, measurements willbe required after commissioning to confirm the results.
9 DEMONSTRATING COMPLIANCE IN THE WORKPLACE
Manufacturers information on noise levels can be used to compare equipment prior to order butmust not be used for demonstrating compliance with this standard. Unless the informationclearly states the sound power level of the equipment when in full operation, the figuresprovided by the manufacturer will not be the same as the noise from the equipment when it isactually in use in the workplace. The only way to demonstrate compliance with this standard is for an on site performance test tobe completed. The equipment should be tested over its full working range whilst performing the task it waspurchased for. Where equipment normally operates in multiple units the test will be carried outwith the requisite number of units in service.Where the plant or equipment is of cyclical operation the measurement time should cover aminimum of one full cycle.
Community noise measurements taken when the wind speed is 3 m/s or less can be used todemonstrate compliance with this standard. The wind direction should generally be favourablefor the transmission of noise, i.e. from the source to the receiver (preferably within plus orminus 45 degrees) and measurement should be avoided if the temperature is below 3 deg C orduring rainfall.Due to the vagaries of the weather and the need for some plants to build up slowly to normaloperating levels, final acceptance testing could be several months after commissioning.
11 UNITS OF MEASURE
Sound Power dB(A)Sound Pressure dB(A) LeqPeak Pressure dB(C)Octave bands minimum 63 Hz to 8 kHz
Both the measurement position and measurement time must be specified for octave band andpressure measurements.
12 EQUIPMENT REQUIRED
Integrating sound level meters used for measurements should be a minimum of Class 2 andpreferably Class 1 and should meet the requirements of current standards.Both the meter and calibrator should have been tested within the last two years and a certificateissued showing that they meet the requirements of the standard.