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 451–475 of 1,273 labs
Hydrotechnik
Active
Negativer und
Positiver Überdruck p e
> 0,015 bar
Überdruck p
(ein- oder mehrgängige
+ 3 more
HygCen Germany
Active
DIN EN ISO 10993-1
DIN EN ISO 10993-5
DIN EN ISO 17405
ISO 10993-23
DIN EN ISO 10993-18
+ 3 more
Hygiene Nord
Active
DIN EN ISO 10993-5
DIN EN ISO 10993-1
DIN EN ISO 11737-2
DIN EN 1040
DIN EN IEC 60601-2-75
+ 3 more
Innen- und Tiefenmaße
Konventioneller
Wägewert/
Massenormale
Festkörpervolumen
+ 3 more
I2 Analytical
Active
staining based on HSG 248.
(HSG 248) – 2021
(PCM) based on HSG 248
A007B based on BS EN15051-2:2013 +1:2016
DIN EN 12457-3
+ 3 more
IDIADA AUTOMOTIVE TECHNOLOGY
Active
DIN EN 1385
EN 17092-1:2020
DIN EN ISO 5077
EN 1317-1
DIN EN ISO 13688
+ 3 more
HbA1c
Vitamin A
Vitamin B1
Vitamin B2
Vitamin B6
+ 3 more
ISO 2143
DIN EN 12143
DIN 53210
DIN EN 12373-4
DIN EN ISO 2812-1
+ 3 more
IFTS
Active
NF X 45-301
NF X 45-302
NF X 45-303
ASTM F795-88
NF P 90-319 de 02/2011
+ 3 more
Thrombozytenaggregometrie
Drogen- und
Medikamentenscreening
Freie Fettsäuren
Linolensäure, Eicosapentaensäure
+ 3 more
ASTM F1978
ASTM G195
DIN EN ISO 4287
DIN EN ISO 4288
DIN EN ISO 5470-1
+ 3 more
Fettsäureprofil der
Erythrozytenmembran
Kurzkettige Fettsäuren
MMA (Methylmethacrylat)
Gesamtporphyrine
+ 3 more
Hämoglobin A1c (HbA1c)
Differenzialblutbild
Erythrozyten
Erythroblasten (NRBC)
Hämatokrit
+ 3 more
HbA1c
Eosinophile, Basophile, MCV, MCH)
Retikulozyten
Urinsediment
Elektrolyte (Kalium, Natrium, Chlorid)
+ 3 more
IMPELAB
Active
DIN EN ISO 7932
DIN EN ISO 6579-1
DIN EN ISO 7937
DIN EN ISO 11290-1
0.95) based on BS ISO 21527-2:2008
+ 2 more
IMQ SpA
Active
DIN EN 62053-23: 2017-09
DIN EN ISO 11816-1
IEC 62109-1
IEC 60598-2-2
DIN EN 62053-24
+ 3 more
INERCO INSPECCIÓN Y CONTROL
Active
UNE-EN 15259
UNE-EN 13284-1
UNE 77225
EPA 8
UNE 77227
+ 3 more
UNE-EN 60404-14
0 mT ≤ B ≤ 75,7 mT (196 ± 3) mT (990 ± 4
3 mT ≤ B ≤ 300 mT 300 mT ≤ B ≤ 1600 mT
INOVALYS - Site de Nantes
Active
NF V 05-116
NF V 04-415
NF V 04-407
NF V04-403
NF V04-401
+ 3 more
Plasma, Serum, Plasma 0,5 mmol/L
Plasma, Serum, Plasma 50 mmol/L
Plasma, Serum, Plasma
Material
Urin
+ 3 more
DIN EN ISO 7932
DIN EN ISO 22964
NF V08-059
DIN EN ISO 6579-1
NF V08-036
+ 3 more
UNE-EN 12667
UNE-EN 14509
UNE-EN ISO 29470
UNE-EN 826
UNE-EN 1607
+ 3 more
INTA
Active
ISO 16063-21
EN 55016-1-6
CEM EL-025
UNE-EN ISO 376
UNE-EN ISO 7500-1
+ 3 more
No matching labs found.