GIS 15-011 - Noise Control - 0900a8668026ab07

Document No.

GIS 15-011

Applicability

Group

Date

3 March 2008

GIS 15-011

Noise Control

Group Instruction for Supply

BP GROUP ENGINEERING TECHNICAL PRACTICES

3 March 2008

GIS 15-011 Noise Control

Foreword This is the first issue of Engineering Technical Practice (ETP) GIS 15-011. This document is technically identical to the former GIS 14-011 dated 4-November-2005. This Group Instruction for Supply (GIS) is based on parts of heritage documents from the merged BP companies as follows:

Amoco (ACES) A EN-NC-00-E A EN-NC-00-G A EN-NC-00-P A EN-NC-00-F

Environmental—Noise Control—Engineering Specification Environmental—Noise Control—Guide Environmental—Noise Control—Procurement Environmental—Noise Control—Data Sheet

ARCO (APCES) Std 600 Std 601

Noise Control Standard for Refinery Operating Units Equipment Noise Control

British Petroleum (RPSE) RP 14-1

Guide to Noise Control.

Copyright  2008, BP Group. All rights reserved. The information contained in this document is subject to the terms and conditions of the agreement or contract under which the document was supplied to the recipient’s organization. None of the information contained in this document shall be disclosed outside the recipient’s own organization without the prior written permission of BP Group, unless the terms of such agreement or contract expressly allow.

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Table of Contents Page Foreword.......................................................................................................................................... 2 1.

Scope...................................................................................................................................... 4

2.

Normative references.............................................................................................................. 4

3.

General................................................................................................................................... 4

4.

Noise level limits..................................................................................................................... 4 4.1. Equipment sound pressure level..................................................................................4 4.2. Intermittent Noise......................................................................................................... 5 4.3. Neighbourhood noise limit............................................................................................5 4.4. Packages..................................................................................................................... 5

5.

Vendor requirements............................................................................................................... 5 5.1. Noise data.................................................................................................................... 5 5.2. Noise reduction............................................................................................................ 6 5.3. Acceptance test............................................................................................................ 6

6.

Noise test requirements.......................................................................................................... 6 6.1. General........................................................................................................................ 6 6.2. Background noise........................................................................................................ 7 6.3. Test environment.......................................................................................................... 7

7.

Measuring equipment.............................................................................................................. 7

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1.


Scope This technical practice (GIS) defines terms to be strictly adhered to by the Vendors of equipment to be purchased and installed in BP facilities. This technical practice covers current permissible operating noise levels for operating equipment within BP facilities. Test stand noise measurements are intended to provide only an initial acceptance of equipment. Ultimately the field measured noise levels determine the acceptability of purchased equipment.

2.

Normative references The following normative documents contain requirements that, through reference in this text, constitute requirements of this technical practice. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this technical practice are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

American National Standards Institute (ANSI) ANSI S1.4 ANSI S1.11 ANSI S1.13 ANSI 12.16

Specification for Sound Level Meters Specification for Octave-Band and Fractional-Octave-Band Analog and Digital Filters Measurement of Sound Pressure Levels in Air Guidelines for the Specification of Noise of New Machinery

British Standard (BS) BS 4142

Method for Rating Industrial Noise Affecting Mixed Residential and Industrial Areas

Engineering Equipment and Materials Users Association (EEMUA) EEMUA 140 EEMUA 141

Noise Procedure Specification Guide to the Use of Noise Procedure Specification

European Standard (EN) BS EN 61260:1996 BS EN 61672-1:2003

3.

Electroacoustics—Octave-Band and Fractional-Octave-Band Filters Electroacoustics —Sound level meters —Part 1: Specifications

General If a plant is to be designed and built by a contractor, the division of responsibilities between BP, the contractor and equipment vendor should be as defined in EEMUA 140.

4. 4.1.

Noise level limits Equipment sound pressure level a.

Equipment sound pressure levels, measured at 1 m (3 ft) from the equipment surface, shall not exceed 80 dBA, unless otherwise specified.

b.

The absolute noise limit shall not exceed 115 dBA.

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c. 4.2.

4.3.

Any additional noise limitations, such as “fence line” noise level or neighbourhood noise limits shall be included in the job specification by BP, see 4.4.

Intermittent Noise a.

Limits for intermittent noise may be 5 dBA higher than the above values.

b.

Limits for intermittent noise shall be mutually agreed upon between vendor and BP for each occurrence.

c.

If the noise from a source contains a pure tone or narrow band component which is noticeable to the human ear as a noise of distinguishable pitch and which represents a dominant feature of the total source noise, the specified sound pressure limits shall be reduced by 5 dB in those octave bands in which the pure tone or narrow band characteristics exist.

Neighbourhood noise limit Neighbourhood limits must be agreed with the local authority and measured at specified locations agreed with the authority.

4.4.

Packages If equipment is supplied as a package such as in the case with agitators, gear boxes, and drivers; pumps and drivers; burners and forced draft fans; compressors, gear boxes, and drivers; etc., the specified noise limits apply to the complete equipment package being supplied by Vendor.

5. 5.1.

Vendor requirements Noise data a.

The vendor shall complete the Vendor Noise Test Report data sheet (VNTR) provided in Annex A, certify the data, and submit it with equipment proposal.

b.

The VNTR will only be used when BP requires a noise test as part of the major equipment specification.

c.

The basis for noise data (i.e., shop test, field test, or calculation) shall be stated.

d.

If data is calculated, the source(s) of theoretical data shall be stated and calculations supplied.

e.

Vendor shall assume in his calculations that valves and adjacent piping will not be acoustically treated.

f.

The noise levels quoted shall relate to the equipment in its normal operating condition and location as well as for any other design or expected mode of operation (unless specified otherwise by BP).

g.

The information required regarding the equipment includes: 1.

The maximum and spatially averaged sound pressure levels at 1 m (3 ft) from the equipment surface, in dBA, and octave band analysis data. The precise position of the maximum noise level should be stated.

2.

Details of how the data from (1) above were obtained (e.g. by direct measurement of the equipment or of similar equipment or by calculation). Unless otherwise stated all measurements should be in accordance with EEMUA 140 or ANSI S1.13 and ANSI S12.16. The defined acoustic environment shall be described in the Measurement Conditions section of VNTR.

3.

Any characteristic noise associated with the equipment, e.g. narrow-band or impulse.

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h.

5.2.

4.

How the measured noise level might be reduced to satisfy the limit specified in the circumstances where the measured noise levels exceed those specified by BP recommendations.

5.

The guaranteed sound pressure and sound power levels of the equipment, including any noise reduction features included in the equipment’s supply.

6.

The method of test to include operating conditions; octave bands in which narrowband noise is present; directivity index and direction (as EEMUA 140).

The certified data submitted in proposals shall be based on previous testing of the same equipment or similar equipment rated within 10 percent of specified conditions and speed (where applicable). If a noise test procedure was used, it shall be referenced in the comments section of the VNTR.

Noise reduction If the standard design does not meet the specified noise limits, alternatives for a special design, or acoustical treatment of the standard design, shall be described and cost impacts shall be quoted in the vendor’s proposal. Any effects on performance or operation of the equipment shall be clearly noted. Noise data for the silenced equipment shall be saved on the noise data sheet.

5.3.

6. 6.1.

6.2.

Acceptance test a.

If the proposed standard equipment will not meet the specified noise levels, BP may choose an alternate that will not exceed required noise level limits or may require a shop acceptance test, or both.

b.

Remedial work resulting from the equipment’s failures to meet noise levels during the test shall be performed at the vendor’s expense.

c.

Acceptance tests shall be conducted and results shall be approved prior to shipment of the equipment.

d.

The vendor’s acceptance test shall be based on the specified test procedures and calculation methods. Test results shall be certified and submitted on the VNTR, as a minimum.

Noise test requirements General a.

Noise tests shall be made at the vendor’s facilities or in a suitable test location provided by the vendor, at his expense.

b.

Outdoor noise tests shall not be conducted under adverse atmospheric conditions such as rain, fog, snow, or winds exceeding 16 km/h (10 mph).

c.

Equipment shall be tested at rated operating conditions.

d.

The vendor’s test conditions, detailed procedures and measurement methods shall be submitted for approval prior to testing.

e.

Noise tests shall follow the procedures stated in EEMUA 140 or ANSI S1.13 and ANSI S12.16.

f.

Unless otherwise specified, SSMT results shall be certified and submitted on the VNTR.

Background noise Reasonable measures shall be taken to isolate the equipment being tested from extraneous background noise generated in the test environment.

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6.3.

7.


Test environment a.

The test microphone should be protected from air currents, vibration electric or magnetic fields, and other influences that might affect the readings.

b.

For all sound level readings, a windscreen shall be fitted over the microphone.

c.

Locations and orientations of the microphone shall be identical for measurement of total and background noise.

d.

The preferred method of taking readings is with an isolated microphone mounted on a tripod.

e.

If hand-held instruments are used, the manufacturer’s recommendations shall be followed to minimize reflective errors.

Measuring equipment a.

Sound level meters shall comply with BS EN 61672-1:2003 (Class 1 sound level meters), or ANSI S1.4 (Type 1 level meters).

b.

Octave-band filters shall be in accordance with BS EN 61260 or ANSI S1.11.

c.

Equipment shall be capable of taking measurements at standardized octave bands, overall (filter out), and the A-weighted frequency scale.

d.

The measurement equipment shall be calibrated according to the manufacturer’s instructions before and after making test measurements.

e.

Specified procedures and calibration checks shall be conducted during testing.

f.

If an instrumentation component loses calibration during testing, the test shall be conducted again.

g.

A calibration check shall include measurements at all frequency band centers, overall (filters out) and A-weighted sound level scales.

h.

Any equipment usage procedures required to reduce error, such as directional or reflective requirements, shall be incorporated and stated in the VNTR.

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Annex A Vendor Noise Test Report (VNTR) Vendor Noise Test Report Data Sheet 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Facility Location: Unit: Service: Contractor: Manufacturer:

Item/Tag No.: Owner Job No.: PO No.: Model No.: Serial No.:

By Co.:

TYPE SURVEY For: Background Noise Survey Preliminary Noise Survey Final Noise Survey Equipment Proposal Octave Band Analysis Required Shop Sound Measurement Test (SSMT) MEASUREMENT CONDITIONS (AS APPLICABLE) Location: Factory Test Stand Other Operation: Full Load Other Date Time Microphone Description Sound Level Meter Description Meter Calibration: Before Test After Test Octave Band Filter Description Microphone Locations Comments Survey No. Brief Description

Outdoors: Weather Conditions Wind Direction Relative Humidity (%RH) Indoors: Type Building Type Walls Type Floor Room Dimensions (Approximate) Relative Humidity (%RH)

Temperature Speed

C m

Temperature Nearest Wall

EQUIPMENT (AS APPLICABLE) Type Manufacturer Model Driver Horsepower Speed Auxiliaries Special Design or Acoustical Treatment: None NO.

DATE

REVISION

BY

APP.

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Test Point


Background Level (dBA)

NOISE DATA Level w/Equipment Correction Operating (dBA) Factor(dBA)

Corrected Noise Level (dBA)

Peak Response (dB)

NOISE CONTOUR SKETCH (Attach Additional Sheets and/or Drawings if Necessary)

CERTIFICATION (AS APPLICABLE)

Supplier Company

Titl Titl Titl

Date: Date: Date:

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ALTERNATIVE OCTAVE BAND ANALYSIS DATA Point No.

Point

Pressure Level

Description

Measurement

31.5 5dB

63

125

250

500

dB

dB

dB

dB

1000 2000 4000 8000 Overall

dB

dB

dB

dB

dB

Weighted

dBA

(Ref.20Pa) Total 1

Background Correction Corrected Total Total

2


3


4


5


6


7


8

Background Correction Corrected Total

Calculated Power Levels (Ref.10-12W)

CERTIFICATION (AS APPLICABLE)

Supplier Company

Titl Titl Titl

Date: Date: Date:

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GIS 15-011 - Noise Control - 0900a8668026ab07

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