Scope
ISO 3381:2013 / EN ISO 3381
Railway Interior Noise Measurement
ISO 3381 specifies standardized measurement procedures for determining sound pressure levels inside railbound passenger and freight vehicles under operating conditions. This test assesses passenger comfort, crew exposure, and compliance with occupational and environmental noise limits within train cabins and compartments. Manufacturers, operators, and occupational health consultants use these measurements to evaluate cabin acoustic quality, design noise control improvements, and ensure regulatory compliance. Accreditation guarantees consistent, defensible interior noise assessments that support both passenger safety and worker health protection.
What it measures
- A-weighted sound pressure level inside vehicle (dB(A))
- Noise levels at driver/operator positions
- Frequency analysis of interior noise (1/3 octave bands)
- Sound exposure level during typical operation
- Noise at passenger seating areas
🇩🇪
DIN EN ISO 3095
🇬🇧
BS EN ISO 3095
🇫🇷
NF EN ISO 3095
🇮🇹
UNI EN ISO 3095
🇪🇸
UNE EN ISO 3095
🇳🇱
NEN EN ISO 3095
🇩🇪
DIN EN ISO 14837-1
🇬🇧
BS EN ISO 14837-1
🇫🇷
NF EN ISO 14837-1
🇮🇹
UNI EN ISO 14837-1
🇪🇸
UNE EN ISO 14837-1
🇳🇱
NEN EN ISO 14837-1
1,273
Accredited labs
15
Countries
Showing 101–125 of 1,273 labs
(HSG 248) – 2021
QOP03 based on HSG 248
(PCM) based on HSG 248
(PCM) based on HSG 248)
QOP01 based on HSG 248
+ 1 more
Asbestos Solution Providers
Active
(HSG 248) – 2021
(PCM) based on HSG 248
(HSG 264, 2012)
Asbestos Survey & Management
Active
QOP03 based on HSG 248
QOP01 based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
Ashcroft Instruments
Active
Absolutdruck p abs 0,015 bar
> 2 bar
> 42 bar
Absolutdruck Pabs
1 bar; 2 bar
+ 3 more
Aspect Quality
Active
DIN 55635
VDE 0468-2-14
VDE 0468-2-1
VDE 0468-2-5
DIN EN 60068-2-30
+ 3 more
AstraZeneca UK
Active
DC CURRENT
AC VOLTAGE (continued)
AC CURRENT
AC Voltage
DIMENSIONAL
+ 3 more
Analysts’ Guide (HSG 248)
(HSG 248) – 2021 Asbestos: The
(PCM) based on HSG 248
Conformity assessment — requirements for
Druckkraftrichtung
Drehmoment 0,01 N∙m
Drehmomentaufnehmer *
Drehmomentmessgeräte *
+ 3 more
Ayerst Environmental
Active
(HSG 248) – 2021 )
(PCM) based on HSG 248
Surveying) based on HSG 248
BARLOVENTO APPLUS+
Active
IEC 61400-11:2012/ AMD:2018
IEC 61400-12-2
IEC 61400-50-2
IEC 61400-12-1
IEC 61400-12-3
+ 3 more
DIN 52186
ISO 21527-1
DIN EN ISO 527-3
IEC 61924-2
DIN EN 62233
+ 3 more
BIOQUALITA' SRL
Active
0,2 0,003 bis 0,006
(HLA DQ8 (HLA DQB*03:02)
ISO 18787
BS EN 15662
DIN EN ISO 6888-1
+ 3 more
BIOTECNAL
Active
UNE-EN ISO 6579-1
UNE-EN ISO 6222
UNE-EN 26777
UNE-EN ISO 7027-1
en 31-7-79 (BOE 29-08-79)
+ 3 more
No matching labs found.